-/* $Id: roff.c,v 1.182 2013/10/05 22:19:10 schwarze Exp $ */
+/* $Id: roff.c,v 1.365 2019/04/21 23:51:21 schwarze Exp $ */
/*
- * Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2010, 2011, 2012, 2013 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2010-2015, 2017-2019 Ingo Schwarze <schwarze@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif
+
+#include <sys/types.h>
#include <assert.h>
#include <ctype.h>
+#include <limits.h>
+#include <stddef.h>
+#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include "mandoc_aux.h"
+#include "mandoc_ohash.h"
#include "mandoc.h"
-#include "libroff.h"
+#include "roff.h"
+#include "mandoc_parse.h"
#include "libmandoc.h"
+#include "roff_int.h"
+#include "tbl_parse.h"
+#include "eqn_parse.h"
-/* Maximum number of nested if-else conditionals. */
-#define RSTACK_MAX 128
+/*
+ * ASCII_ESC is used to signal from roff_getarg() to roff_expand()
+ * that an escape sequence resulted from copy-in processing and
+ * needs to be checked or interpolated. As it is used nowhere
+ * else, it is defined here rather than in a header file.
+ */
+#define ASCII_ESC 27
/* Maximum number of string expansions per line, to break infinite loops. */
#define EXPAND_LIMIT 1000
-enum rofft {
- ROFF_ad,
- ROFF_am,
- ROFF_ami,
- ROFF_am1,
- ROFF_cc,
- ROFF_de,
- ROFF_dei,
- ROFF_de1,
- ROFF_ds,
- ROFF_el,
- ROFF_hy,
- ROFF_ie,
- ROFF_if,
- ROFF_ig,
- ROFF_it,
- ROFF_ne,
- ROFF_nh,
- ROFF_nr,
- ROFF_ns,
- ROFF_ps,
- ROFF_rm,
- ROFF_so,
- ROFF_ta,
- ROFF_tr,
- ROFF_Dd,
- ROFF_TH,
- ROFF_TS,
- ROFF_TE,
- ROFF_T_,
- ROFF_EQ,
- ROFF_EN,
- ROFF_cblock,
- ROFF_ccond,
- ROFF_USERDEF,
- ROFF_MAX
-};
+/* Types of definitions of macros and strings. */
+#define ROFFDEF_USER (1 << 1) /* User-defined. */
+#define ROFFDEF_PRE (1 << 2) /* Predefined. */
+#define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
+#define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
+#define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
+ ROFFDEF_REN | ROFFDEF_STD)
+#define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
-enum roffrule {
- ROFFRULE_ALLOW,
- ROFFRULE_DENY
-};
+/* --- data types --------------------------------------------------------- */
/*
* An incredibly-simple string buffer.
struct roffreg {
struct roffstr key;
int val;
+ int step;
struct roffreg *next;
};
+/*
+ * Association of request and macro names with token IDs.
+ */
+struct roffreq {
+ enum roff_tok tok;
+ char name[];
+};
+
+/*
+ * A macro processing context.
+ * More than one is needed when macro calls are nested.
+ */
+struct mctx {
+ char **argv;
+ int argc;
+ int argsz;
+};
+
struct roff {
- enum mparset parsetype; /* requested parse type */
- struct mparse *parse; /* parse point */
+ struct roff_man *man; /* mdoc or man parser */
struct roffnode *last; /* leaf of stack */
- enum roffrule rstack[RSTACK_MAX]; /* stack of !`ie' rules */
- char control; /* control character */
- int rstackpos; /* position in rstack */
+ struct mctx *mstack; /* stack of macro contexts */
+ int *rstack; /* stack of inverted `ie' values */
+ struct ohash *reqtab; /* request lookup table */
struct roffreg *regtab; /* number registers */
struct roffkv *strtab; /* user-defined strings & macros */
+ struct roffkv *rentab; /* renamed strings & macros */
struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
struct roffstr *xtab; /* single-byte trans table (`tr') */
const char *current_string; /* value of last called user macro */
struct tbl_node *first_tbl; /* first table parsed */
struct tbl_node *last_tbl; /* last table parsed */
struct tbl_node *tbl; /* current table being parsed */
- struct eqn_node *last_eqn; /* last equation parsed */
- struct eqn_node *first_eqn; /* first equation parsed */
- struct eqn_node *eqn; /* current equation being parsed */
+ struct eqn_node *last_eqn; /* equation parser */
+ struct eqn_node *eqn; /* active equation parser */
+ int eqn_inline; /* current equation is inline */
+ int options; /* parse options */
+ int mstacksz; /* current size of mstack */
+ int mstackpos; /* position in mstack */
+ int rstacksz; /* current size limit of rstack */
+ int rstackpos; /* position in rstack */
+ int format; /* current file in mdoc or man format */
+ char control; /* control character */
+ char escape; /* escape character */
};
+/*
+ * A macro definition, condition, or ignored block.
+ */
struct roffnode {
- enum rofft tok; /* type of node */
+ enum roff_tok tok; /* type of node */
struct roffnode *parent; /* up one in stack */
int line; /* parse line */
int col; /* parse col */
char *name; /* node name, e.g. macro name */
- char *end; /* end-rules: custom token */
- int endspan; /* end-rules: next-line or infty */
- enum roffrule rule; /* current evaluation rule */
+ char *end; /* custom end macro of the block */
+ int endspan; /* scope to: 1=eol 2=next line -1=\} */
+ int rule; /* content is: 1=evaluated 0=skipped */
};
#define ROFF_ARGS struct roff *r, /* parse ctx */ \
- enum rofft tok, /* tok of macro */ \
- char **bufp, /* input buffer */ \
- size_t *szp, /* size of input buffer */ \
+ enum roff_tok tok, /* tok of macro */ \
+ struct buf *buf, /* input buffer */ \
int ln, /* parse line */ \
int ppos, /* original pos in buffer */ \
int pos, /* current pos in buffer */ \
int *offs /* reset offset of buffer data */
-typedef enum rofferr (*roffproc)(ROFF_ARGS);
+typedef int (*roffproc)(ROFF_ARGS);
struct roffmac {
- const char *name; /* macro name */
roffproc proc; /* process new macro */
roffproc text; /* process as child text of macro */
roffproc sub; /* process as child of macro */
int flags;
#define ROFFMAC_STRUCT (1 << 0) /* always interpret */
- struct roffmac *next;
};
struct predef {
#define PREDEF(__name, __str) \
{ (__name), (__str) },
-static enum rofft roffhash_find(const char *, size_t);
-static void roffhash_init(void);
-static void roffnode_cleanscope(struct roff *);
-static void roffnode_pop(struct roff *);
-static void roffnode_push(struct roff *, enum rofft,
+/* --- function prototypes ------------------------------------------------ */
+
+static int roffnode_cleanscope(struct roff *);
+static int roffnode_pop(struct roff *);
+static void roffnode_push(struct roff *, enum roff_tok,
const char *, int, int);
-static enum rofferr roff_block(ROFF_ARGS);
-static enum rofferr roff_block_text(ROFF_ARGS);
-static enum rofferr roff_block_sub(ROFF_ARGS);
-static enum rofferr roff_cblock(ROFF_ARGS);
-static enum rofferr roff_cc(ROFF_ARGS);
-static enum rofferr roff_ccond(ROFF_ARGS);
-static enum rofferr roff_cond(ROFF_ARGS);
-static enum rofferr roff_cond_text(ROFF_ARGS);
-static enum rofferr roff_cond_sub(ROFF_ARGS);
-static enum rofferr roff_ds(ROFF_ARGS);
-static enum roffrule roff_evalcond(const char *, int *);
+static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
+static int roff_als(ROFF_ARGS);
+static int roff_block(ROFF_ARGS);
+static int roff_block_text(ROFF_ARGS);
+static int roff_block_sub(ROFF_ARGS);
+static int roff_break(ROFF_ARGS);
+static int roff_cblock(ROFF_ARGS);
+static int roff_cc(ROFF_ARGS);
+static int roff_ccond(struct roff *, int, int);
+static int roff_char(ROFF_ARGS);
+static int roff_cond(ROFF_ARGS);
+static int roff_cond_text(ROFF_ARGS);
+static int roff_cond_sub(ROFF_ARGS);
+static int roff_ds(ROFF_ARGS);
+static int roff_ec(ROFF_ARGS);
+static int roff_eo(ROFF_ARGS);
+static int roff_eqndelim(struct roff *, struct buf *, int);
+static int roff_evalcond(struct roff *r, int, char *, int *);
+static int roff_evalnum(struct roff *, int,
+ const char *, int *, int *, int);
+static int roff_evalpar(struct roff *, int,
+ const char *, int *, int *, int);
+static int roff_evalstrcond(const char *, int *);
+static int roff_expand(struct roff *, struct buf *,
+ int, int, char);
static void roff_free1(struct roff *);
static void roff_freereg(struct roffreg *);
static void roff_freestr(struct roffkv *);
-static char *roff_getname(struct roff *, char **, int, int);
-static int roff_getregn(const struct roff *,
+static size_t roff_getname(struct roff *, char **, int, int);
+static int roff_getnum(const char *, int *, int *, int);
+static int roff_getop(const char *, int *, char *);
+static int roff_getregn(struct roff *,
+ const char *, size_t, char);
+static int roff_getregro(const struct roff *,
+ const char *name);
+static const char *roff_getstrn(struct roff *,
+ const char *, size_t, int *);
+static int roff_hasregn(const struct roff *,
const char *, size_t);
-static const char *roff_getstrn(const struct roff *,
- const char *, size_t);
-static enum rofferr roff_it(ROFF_ARGS);
-static enum rofferr roff_line_ignore(ROFF_ARGS);
-static enum rofferr roff_nr(ROFF_ARGS);
-static void roff_openeqn(struct roff *, const char *,
- int, int, const char *);
-static enum rofft roff_parse(struct roff *, const char *, int *);
-static enum rofferr roff_parsetext(char **, size_t *, int, int *);
-static enum rofferr roff_res(struct roff *,
- char **, size_t *, int, int);
-static enum rofferr roff_rm(ROFF_ARGS);
+static int roff_insec(ROFF_ARGS);
+static int roff_it(ROFF_ARGS);
+static int roff_line_ignore(ROFF_ARGS);
+static void roff_man_alloc1(struct roff_man *);
+static void roff_man_free1(struct roff_man *);
+static int roff_manyarg(ROFF_ARGS);
+static int roff_noarg(ROFF_ARGS);
+static int roff_nop(ROFF_ARGS);
+static int roff_nr(ROFF_ARGS);
+static int roff_onearg(ROFF_ARGS);
+static enum roff_tok roff_parse(struct roff *, char *, int *,
+ int, int);
+static int roff_parsetext(struct roff *, struct buf *,
+ int, int *);
+static int roff_renamed(ROFF_ARGS);
+static int roff_return(ROFF_ARGS);
+static int roff_rm(ROFF_ARGS);
+static int roff_rn(ROFF_ARGS);
+static int roff_rr(ROFF_ARGS);
+static void roff_setregn(struct roff *, const char *,
+ size_t, int, char, int);
static void roff_setstr(struct roff *,
const char *, const char *, int);
-static void roff_setstrn(struct roffkv **, const char *,
+static void roff_setstrn(struct roffkv **, const char *,
size_t, const char *, size_t, int);
-static enum rofferr roff_so(ROFF_ARGS);
-static enum rofferr roff_tr(ROFF_ARGS);
-static enum rofferr roff_Dd(ROFF_ARGS);
-static enum rofferr roff_TH(ROFF_ARGS);
-static enum rofferr roff_TE(ROFF_ARGS);
-static enum rofferr roff_TS(ROFF_ARGS);
-static enum rofferr roff_EQ(ROFF_ARGS);
-static enum rofferr roff_EN(ROFF_ARGS);
-static enum rofferr roff_T_(ROFF_ARGS);
-static enum rofferr roff_userdef(ROFF_ARGS);
-
-/* See roffhash_find() */
-
-#define ASCII_HI 126
-#define ASCII_LO 33
-#define HASHWIDTH (ASCII_HI - ASCII_LO + 1)
-
-static struct roffmac *hash[HASHWIDTH];
-
-static struct roffmac roffs[ROFF_MAX] = {
- { "ad", roff_line_ignore, NULL, NULL, 0, NULL },
- { "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },
- { "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
- { "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
- { "cc", roff_cc, NULL, NULL, 0, NULL },
- { "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },
- { "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
- { "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
- { "ds", roff_ds, NULL, NULL, 0, NULL },
- { "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
- { "hy", roff_line_ignore, NULL, NULL, 0, NULL },
- { "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
- { "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
- { "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL },
- { "it", roff_it, NULL, NULL, 0, NULL },
- { "ne", roff_line_ignore, NULL, NULL, 0, NULL },
- { "nh", roff_line_ignore, NULL, NULL, 0, NULL },
- { "nr", roff_nr, NULL, NULL, 0, NULL },
- { "ns", roff_line_ignore, NULL, NULL, 0, NULL },
- { "ps", roff_line_ignore, NULL, NULL, 0, NULL },
- { "rm", roff_rm, NULL, NULL, 0, NULL },
- { "so", roff_so, NULL, NULL, 0, NULL },
- { "ta", roff_line_ignore, NULL, NULL, 0, NULL },
- { "tr", roff_tr, NULL, NULL, 0, NULL },
- { "Dd", roff_Dd, NULL, NULL, 0, NULL },
- { "TH", roff_TH, NULL, NULL, 0, NULL },
- { "TS", roff_TS, NULL, NULL, 0, NULL },
- { "TE", roff_TE, NULL, NULL, 0, NULL },
- { "T&", roff_T_, NULL, NULL, 0, NULL },
- { "EQ", roff_EQ, NULL, NULL, 0, NULL },
- { "EN", roff_EN, NULL, NULL, 0, NULL },
- { ".", roff_cblock, NULL, NULL, 0, NULL },
- { "\\}", roff_ccond, NULL, NULL, 0, NULL },
- { NULL, roff_userdef, NULL, NULL, 0, NULL },
-};
-
-const char *const __mdoc_reserved[] = {
- "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
- "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
- "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
- "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
- "Ds", "Dt", "Dv", "Dx", "D1",
- "Ec", "Ed", "Ef", "Ek", "El", "Em", "em",
- "En", "Eo", "Eq", "Er", "Es", "Ev", "Ex",
- "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
- "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp", "LP",
- "Me", "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
- "Oc", "Oo", "Op", "Os", "Ot", "Ox",
- "Pa", "Pc", "Pf", "Po", "Pp", "PP", "pp", "Pq",
- "Qc", "Ql", "Qo", "Qq", "Or", "Rd", "Re", "Rs", "Rv",
- "Sc", "Sf", "Sh", "SH", "Sm", "So", "Sq",
- "Ss", "St", "Sx", "Sy",
- "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
- "%A", "%B", "%D", "%I", "%J", "%N", "%O",
- "%P", "%Q", "%R", "%T", "%U", "%V",
- NULL
+static int roff_shift(ROFF_ARGS);
+static int roff_so(ROFF_ARGS);
+static int roff_tr(ROFF_ARGS);
+static int roff_Dd(ROFF_ARGS);
+static int roff_TE(ROFF_ARGS);
+static int roff_TS(ROFF_ARGS);
+static int roff_EQ(ROFF_ARGS);
+static int roff_EN(ROFF_ARGS);
+static int roff_T_(ROFF_ARGS);
+static int roff_unsupp(ROFF_ARGS);
+static int roff_userdef(ROFF_ARGS);
+
+/* --- constant data ------------------------------------------------------ */
+
+#define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
+#define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
+
+const char *__roff_name[MAN_MAX + 1] = {
+ "br", "ce", "fi", "ft",
+ "ll", "mc", "nf",
+ "po", "rj", "sp",
+ "ta", "ti", NULL,
+ "ab", "ad", "af", "aln",
+ "als", "am", "am1", "ami",
+ "ami1", "as", "as1", "asciify",
+ "backtrace", "bd", "bleedat", "blm",
+ "box", "boxa", "bp", "BP",
+ "break", "breakchar", "brnl", "brp",
+ "brpnl", "c2", "cc",
+ "cf", "cflags", "ch", "char",
+ "chop", "class", "close", "CL",
+ "color", "composite", "continue", "cp",
+ "cropat", "cs", "cu", "da",
+ "dch", "Dd", "de", "de1",
+ "defcolor", "dei", "dei1", "device",
+ "devicem", "di", "do", "ds",
+ "ds1", "dwh", "dt", "ec",
+ "ecr", "ecs", "el", "em",
+ "EN", "eo", "EP", "EQ",
+ "errprint", "ev", "evc", "ex",
+ "fallback", "fam", "fc", "fchar",
+ "fcolor", "fdeferlig", "feature", "fkern",
+ "fl", "flig", "fp", "fps",
+ "fschar", "fspacewidth", "fspecial", "ftr",
+ "fzoom", "gcolor", "hc", "hcode",
+ "hidechar", "hla", "hlm", "hpf",
+ "hpfa", "hpfcode", "hw", "hy",
+ "hylang", "hylen", "hym", "hypp",
+ "hys", "ie", "if", "ig",
+ "index", "it", "itc", "IX",
+ "kern", "kernafter", "kernbefore", "kernpair",
+ "lc", "lc_ctype", "lds", "length",
+ "letadj", "lf", "lg", "lhang",
+ "linetabs", "lnr", "lnrf", "lpfx",
+ "ls", "lsm", "lt",
+ "mediasize", "minss", "mk", "mso",
+ "na", "ne", "nh", "nhychar",
+ "nm", "nn", "nop", "nr",
+ "nrf", "nroff", "ns", "nx",
+ "open", "opena", "os", "output",
+ "padj", "papersize", "pc", "pev",
+ "pi", "PI", "pl", "pm",
+ "pn", "pnr", "ps",
+ "psbb", "pshape", "pso", "ptr",
+ "pvs", "rchar", "rd", "recursionlimit",
+ "return", "rfschar", "rhang",
+ "rm", "rn", "rnn", "rr",
+ "rs", "rt", "schar", "sentchar",
+ "shc", "shift", "sizes", "so",
+ "spacewidth", "special", "spreadwarn", "ss",
+ "sty", "substring", "sv", "sy",
+ "T&", "tc", "TE",
+ "TH", "tkf", "tl",
+ "tm", "tm1", "tmc", "tr",
+ "track", "transchar", "trf", "trimat",
+ "trin", "trnt", "troff", "TS",
+ "uf", "ul", "unformat", "unwatch",
+ "unwatchn", "vpt", "vs", "warn",
+ "warnscale", "watch", "watchlength", "watchn",
+ "wh", "while", "write", "writec",
+ "writem", "xflag", ".", NULL,
+ NULL, "text",
+ "Dd", "Dt", "Os", "Sh",
+ "Ss", "Pp", "D1", "Dl",
+ "Bd", "Ed", "Bl", "El",
+ "It", "Ad", "An", "Ap",
+ "Ar", "Cd", "Cm", "Dv",
+ "Er", "Ev", "Ex", "Fa",
+ "Fd", "Fl", "Fn", "Ft",
+ "Ic", "In", "Li", "Nd",
+ "Nm", "Op", "Ot", "Pa",
+ "Rv", "St", "Va", "Vt",
+ "Xr", "%A", "%B", "%D",
+ "%I", "%J", "%N", "%O",
+ "%P", "%R", "%T", "%V",
+ "Ac", "Ao", "Aq", "At",
+ "Bc", "Bf", "Bo", "Bq",
+ "Bsx", "Bx", "Db", "Dc",
+ "Do", "Dq", "Ec", "Ef",
+ "Em", "Eo", "Fx", "Ms",
+ "No", "Ns", "Nx", "Ox",
+ "Pc", "Pf", "Po", "Pq",
+ "Qc", "Ql", "Qo", "Qq",
+ "Re", "Rs", "Sc", "So",
+ "Sq", "Sm", "Sx", "Sy",
+ "Tn", "Ux", "Xc", "Xo",
+ "Fo", "Fc", "Oo", "Oc",
+ "Bk", "Ek", "Bt", "Hf",
+ "Fr", "Ud", "Lb", "Lp",
+ "Lk", "Mt", "Brq", "Bro",
+ "Brc", "%C", "Es", "En",
+ "Dx", "%Q", "%U", "Ta",
+ NULL,
+ "TH", "SH", "SS", "TP",
+ "TQ",
+ "LP", "PP", "P", "IP",
+ "HP", "SM", "SB", "BI",
+ "IB", "BR", "RB", "R",
+ "B", "I", "IR", "RI",
+ "RE", "RS", "DT", "UC",
+ "PD", "AT", "in",
+ "SY", "YS", "OP",
+ "EX", "EE", "UR",
+ "UE", "MT", "ME", NULL
};
-
-const char *const __man_reserved[] = {
- "AT", "B", "BI", "BR", "BT", "DE", "DS", "DT",
- "EE", "EN", "EQ", "EX", "HF", "HP", "I", "IB", "IP", "IR",
- "LP", "ME", "MT", "OP", "P", "PD", "PP", "PT",
- "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS", "SY",
- "TE", "TH", "TP", "TQ", "TS", "T&", "UC", "UE", "UR", "YS",
- NULL
+const char *const *roff_name = __roff_name;
+
+static struct roffmac roffs[TOKEN_NONE] = {
+ { roff_noarg, NULL, NULL, 0 }, /* br */
+ { roff_onearg, NULL, NULL, 0 }, /* ce */
+ { roff_noarg, NULL, NULL, 0 }, /* fi */
+ { roff_onearg, NULL, NULL, 0 }, /* ft */
+ { roff_onearg, NULL, NULL, 0 }, /* ll */
+ { roff_onearg, NULL, NULL, 0 }, /* mc */
+ { roff_noarg, NULL, NULL, 0 }, /* nf */
+ { roff_onearg, NULL, NULL, 0 }, /* po */
+ { roff_onearg, NULL, NULL, 0 }, /* rj */
+ { roff_onearg, NULL, NULL, 0 }, /* sp */
+ { roff_manyarg, NULL, NULL, 0 }, /* ta */
+ { roff_onearg, NULL, NULL, 0 }, /* ti */
+ { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
+ { roff_unsupp, NULL, NULL, 0 }, /* ab */
+ { roff_line_ignore, NULL, NULL, 0 }, /* ad */
+ { roff_line_ignore, NULL, NULL, 0 }, /* af */
+ { roff_unsupp, NULL, NULL, 0 }, /* aln */
+ { roff_als, NULL, NULL, 0 }, /* als */
+ { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
+ { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
+ { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
+ { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
+ { roff_ds, NULL, NULL, 0 }, /* as */
+ { roff_ds, NULL, NULL, 0 }, /* as1 */
+ { roff_unsupp, NULL, NULL, 0 }, /* asciify */
+ { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
+ { roff_line_ignore, NULL, NULL, 0 }, /* bd */
+ { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
+ { roff_unsupp, NULL, NULL, 0 }, /* blm */
+ { roff_unsupp, NULL, NULL, 0 }, /* box */
+ { roff_unsupp, NULL, NULL, 0 }, /* boxa */
+ { roff_line_ignore, NULL, NULL, 0 }, /* bp */
+ { roff_unsupp, NULL, NULL, 0 }, /* BP */
+ { roff_break, NULL, NULL, 0 }, /* break */
+ { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
+ { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
+ { roff_noarg, NULL, NULL, 0 }, /* brp */
+ { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
+ { roff_unsupp, NULL, NULL, 0 }, /* c2 */
+ { roff_cc, NULL, NULL, 0 }, /* cc */
+ { roff_insec, NULL, NULL, 0 }, /* cf */
+ { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
+ { roff_line_ignore, NULL, NULL, 0 }, /* ch */
+ { roff_char, NULL, NULL, 0 }, /* char */
+ { roff_unsupp, NULL, NULL, 0 }, /* chop */
+ { roff_line_ignore, NULL, NULL, 0 }, /* class */
+ { roff_insec, NULL, NULL, 0 }, /* close */
+ { roff_unsupp, NULL, NULL, 0 }, /* CL */
+ { roff_line_ignore, NULL, NULL, 0 }, /* color */
+ { roff_unsupp, NULL, NULL, 0 }, /* composite */
+ { roff_unsupp, NULL, NULL, 0 }, /* continue */
+ { roff_line_ignore, NULL, NULL, 0 }, /* cp */
+ { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
+ { roff_line_ignore, NULL, NULL, 0 }, /* cs */
+ { roff_line_ignore, NULL, NULL, 0 }, /* cu */
+ { roff_unsupp, NULL, NULL, 0 }, /* da */
+ { roff_unsupp, NULL, NULL, 0 }, /* dch */
+ { roff_Dd, NULL, NULL, 0 }, /* Dd */
+ { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
+ { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
+ { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
+ { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
+ { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
+ { roff_unsupp, NULL, NULL, 0 }, /* device */
+ { roff_unsupp, NULL, NULL, 0 }, /* devicem */
+ { roff_unsupp, NULL, NULL, 0 }, /* di */
+ { roff_unsupp, NULL, NULL, 0 }, /* do */
+ { roff_ds, NULL, NULL, 0 }, /* ds */
+ { roff_ds, NULL, NULL, 0 }, /* ds1 */
+ { roff_unsupp, NULL, NULL, 0 }, /* dwh */
+ { roff_unsupp, NULL, NULL, 0 }, /* dt */
+ { roff_ec, NULL, NULL, 0 }, /* ec */
+ { roff_unsupp, NULL, NULL, 0 }, /* ecr */
+ { roff_unsupp, NULL, NULL, 0 }, /* ecs */
+ { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
+ { roff_unsupp, NULL, NULL, 0 }, /* em */
+ { roff_EN, NULL, NULL, 0 }, /* EN */
+ { roff_eo, NULL, NULL, 0 }, /* eo */
+ { roff_unsupp, NULL, NULL, 0 }, /* EP */
+ { roff_EQ, NULL, NULL, 0 }, /* EQ */
+ { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
+ { roff_unsupp, NULL, NULL, 0 }, /* ev */
+ { roff_unsupp, NULL, NULL, 0 }, /* evc */
+ { roff_unsupp, NULL, NULL, 0 }, /* ex */
+ { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
+ { roff_line_ignore, NULL, NULL, 0 }, /* fam */
+ { roff_unsupp, NULL, NULL, 0 }, /* fc */
+ { roff_unsupp, NULL, NULL, 0 }, /* fchar */
+ { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
+ { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
+ { roff_line_ignore, NULL, NULL, 0 }, /* feature */
+ { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
+ { roff_line_ignore, NULL, NULL, 0 }, /* fl */
+ { roff_line_ignore, NULL, NULL, 0 }, /* flig */
+ { roff_line_ignore, NULL, NULL, 0 }, /* fp */
+ { roff_line_ignore, NULL, NULL, 0 }, /* fps */
+ { roff_unsupp, NULL, NULL, 0 }, /* fschar */
+ { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
+ { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
+ { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
+ { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
+ { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
+ { roff_line_ignore, NULL, NULL, 0 }, /* hc */
+ { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
+ { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
+ { roff_line_ignore, NULL, NULL, 0 }, /* hla */
+ { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
+ { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
+ { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
+ { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
+ { roff_line_ignore, NULL, NULL, 0 }, /* hw */
+ { roff_line_ignore, NULL, NULL, 0 }, /* hy */
+ { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
+ { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
+ { roff_line_ignore, NULL, NULL, 0 }, /* hym */
+ { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
+ { roff_line_ignore, NULL, NULL, 0 }, /* hys */
+ { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
+ { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
+ { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
+ { roff_unsupp, NULL, NULL, 0 }, /* index */
+ { roff_it, NULL, NULL, 0 }, /* it */
+ { roff_unsupp, NULL, NULL, 0 }, /* itc */
+ { roff_line_ignore, NULL, NULL, 0 }, /* IX */
+ { roff_line_ignore, NULL, NULL, 0 }, /* kern */
+ { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
+ { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
+ { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
+ { roff_unsupp, NULL, NULL, 0 }, /* lc */
+ { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
+ { roff_unsupp, NULL, NULL, 0 }, /* lds */
+ { roff_unsupp, NULL, NULL, 0 }, /* length */
+ { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
+ { roff_insec, NULL, NULL, 0 }, /* lf */
+ { roff_line_ignore, NULL, NULL, 0 }, /* lg */
+ { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
+ { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
+ { roff_unsupp, NULL, NULL, 0 }, /* lnr */
+ { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
+ { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
+ { roff_line_ignore, NULL, NULL, 0 }, /* ls */
+ { roff_unsupp, NULL, NULL, 0 }, /* lsm */
+ { roff_line_ignore, NULL, NULL, 0 }, /* lt */
+ { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
+ { roff_line_ignore, NULL, NULL, 0 }, /* minss */
+ { roff_line_ignore, NULL, NULL, 0 }, /* mk */
+ { roff_insec, NULL, NULL, 0 }, /* mso */
+ { roff_line_ignore, NULL, NULL, 0 }, /* na */
+ { roff_line_ignore, NULL, NULL, 0 }, /* ne */
+ { roff_line_ignore, NULL, NULL, 0 }, /* nh */
+ { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
+ { roff_unsupp, NULL, NULL, 0 }, /* nm */
+ { roff_unsupp, NULL, NULL, 0 }, /* nn */
+ { roff_nop, NULL, NULL, 0 }, /* nop */
+ { roff_nr, NULL, NULL, 0 }, /* nr */
+ { roff_unsupp, NULL, NULL, 0 }, /* nrf */
+ { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
+ { roff_line_ignore, NULL, NULL, 0 }, /* ns */
+ { roff_insec, NULL, NULL, 0 }, /* nx */
+ { roff_insec, NULL, NULL, 0 }, /* open */
+ { roff_insec, NULL, NULL, 0 }, /* opena */
+ { roff_line_ignore, NULL, NULL, 0 }, /* os */
+ { roff_unsupp, NULL, NULL, 0 }, /* output */
+ { roff_line_ignore, NULL, NULL, 0 }, /* padj */
+ { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
+ { roff_line_ignore, NULL, NULL, 0 }, /* pc */
+ { roff_line_ignore, NULL, NULL, 0 }, /* pev */
+ { roff_insec, NULL, NULL, 0 }, /* pi */
+ { roff_unsupp, NULL, NULL, 0 }, /* PI */
+ { roff_line_ignore, NULL, NULL, 0 }, /* pl */
+ { roff_line_ignore, NULL, NULL, 0 }, /* pm */
+ { roff_line_ignore, NULL, NULL, 0 }, /* pn */
+ { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
+ { roff_line_ignore, NULL, NULL, 0 }, /* ps */
+ { roff_unsupp, NULL, NULL, 0 }, /* psbb */
+ { roff_unsupp, NULL, NULL, 0 }, /* pshape */
+ { roff_insec, NULL, NULL, 0 }, /* pso */
+ { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
+ { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
+ { roff_unsupp, NULL, NULL, 0 }, /* rchar */
+ { roff_line_ignore, NULL, NULL, 0 }, /* rd */
+ { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
+ { roff_return, NULL, NULL, 0 }, /* return */
+ { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
+ { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
+ { roff_rm, NULL, NULL, 0 }, /* rm */
+ { roff_rn, NULL, NULL, 0 }, /* rn */
+ { roff_unsupp, NULL, NULL, 0 }, /* rnn */
+ { roff_rr, NULL, NULL, 0 }, /* rr */
+ { roff_line_ignore, NULL, NULL, 0 }, /* rs */
+ { roff_line_ignore, NULL, NULL, 0 }, /* rt */
+ { roff_unsupp, NULL, NULL, 0 }, /* schar */
+ { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
+ { roff_line_ignore, NULL, NULL, 0 }, /* shc */
+ { roff_shift, NULL, NULL, 0 }, /* shift */
+ { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
+ { roff_so, NULL, NULL, 0 }, /* so */
+ { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
+ { roff_line_ignore, NULL, NULL, 0 }, /* special */
+ { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
+ { roff_line_ignore, NULL, NULL, 0 }, /* ss */
+ { roff_line_ignore, NULL, NULL, 0 }, /* sty */
+ { roff_unsupp, NULL, NULL, 0 }, /* substring */
+ { roff_line_ignore, NULL, NULL, 0 }, /* sv */
+ { roff_insec, NULL, NULL, 0 }, /* sy */
+ { roff_T_, NULL, NULL, 0 }, /* T& */
+ { roff_unsupp, NULL, NULL, 0 }, /* tc */
+ { roff_TE, NULL, NULL, 0 }, /* TE */
+ { roff_Dd, NULL, NULL, 0 }, /* TH */
+ { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
+ { roff_unsupp, NULL, NULL, 0 }, /* tl */
+ { roff_line_ignore, NULL, NULL, 0 }, /* tm */
+ { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
+ { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
+ { roff_tr, NULL, NULL, 0 }, /* tr */
+ { roff_line_ignore, NULL, NULL, 0 }, /* track */
+ { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
+ { roff_insec, NULL, NULL, 0 }, /* trf */
+ { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
+ { roff_unsupp, NULL, NULL, 0 }, /* trin */
+ { roff_unsupp, NULL, NULL, 0 }, /* trnt */
+ { roff_line_ignore, NULL, NULL, 0 }, /* troff */
+ { roff_TS, NULL, NULL, 0 }, /* TS */
+ { roff_line_ignore, NULL, NULL, 0 }, /* uf */
+ { roff_line_ignore, NULL, NULL, 0 }, /* ul */
+ { roff_unsupp, NULL, NULL, 0 }, /* unformat */
+ { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
+ { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
+ { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
+ { roff_line_ignore, NULL, NULL, 0 }, /* vs */
+ { roff_line_ignore, NULL, NULL, 0 }, /* warn */
+ { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
+ { roff_line_ignore, NULL, NULL, 0 }, /* watch */
+ { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
+ { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
+ { roff_unsupp, NULL, NULL, 0 }, /* wh */
+ { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
+ { roff_insec, NULL, NULL, 0 }, /* write */
+ { roff_insec, NULL, NULL, 0 }, /* writec */
+ { roff_insec, NULL, NULL, 0 }, /* writem */
+ { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
+ { roff_cblock, NULL, NULL, 0 }, /* . */
+ { roff_renamed, NULL, NULL, 0 },
+ { roff_userdef, NULL, NULL, 0 }
};
/* Array of injected predefined strings. */
#include "predefs.in"
};
-/* See roffhash_find() */
-#define ROFF_HASH(p) (p[0] - ASCII_LO)
-
+static int roffce_lines; /* number of input lines to center */
+static struct roff_node *roffce_node; /* active request */
static int roffit_lines; /* number of lines to delay */
static char *roffit_macro; /* nil-terminated macro line */
-static void
-roffhash_init(void)
-{
- struct roffmac *n;
- int buc, i;
- for (i = 0; i < (int)ROFF_USERDEF; i++) {
- assert(roffs[i].name[0] >= ASCII_LO);
- assert(roffs[i].name[0] <= ASCII_HI);
+/* --- request table ------------------------------------------------------ */
+
+struct ohash *
+roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
+{
+ struct ohash *htab;
+ struct roffreq *req;
+ enum roff_tok tok;
+ size_t sz;
+ unsigned int slot;
- buc = ROFF_HASH(roffs[i].name);
+ htab = mandoc_malloc(sizeof(*htab));
+ mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
- if (NULL != (n = hash[buc])) {
- for ( ; n->next; n = n->next)
- /* Do nothing. */ ;
- n->next = &roffs[i];
- } else
- hash[buc] = &roffs[i];
+ for (tok = mintok; tok < maxtok; tok++) {
+ if (roff_name[tok] == NULL)
+ continue;
+ sz = strlen(roff_name[tok]);
+ req = mandoc_malloc(sizeof(*req) + sz + 1);
+ req->tok = tok;
+ memcpy(req->name, roff_name[tok], sz + 1);
+ slot = ohash_qlookup(htab, req->name);
+ ohash_insert(htab, slot, req);
}
+ return htab;
}
-/*
- * Look up a roff token by its name. Returns ROFF_MAX if no macro by
- * the nil-terminated string name could be found.
- */
-static enum rofft
-roffhash_find(const char *p, size_t s)
+void
+roffhash_free(struct ohash *htab)
{
- int buc;
- struct roffmac *n;
-
- /*
- * libroff has an extremely simple hashtable, for the time
- * being, which simply keys on the first character, which must
- * be printable, then walks a chain. It works well enough until
- * optimised.
- */
-
- if (p[0] < ASCII_LO || p[0] > ASCII_HI)
- return(ROFF_MAX);
-
- buc = ROFF_HASH(p);
+ struct roffreq *req;
+ unsigned int slot;
- if (NULL == (n = hash[buc]))
- return(ROFF_MAX);
- for ( ; n; n = n->next)
- if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s])
- return((enum rofft)(n - roffs));
+ if (htab == NULL)
+ return;
+ for (req = ohash_first(htab, &slot); req != NULL;
+ req = ohash_next(htab, &slot))
+ free(req);
+ ohash_delete(htab);
+ free(htab);
+}
- return(ROFF_MAX);
+enum roff_tok
+roffhash_find(struct ohash *htab, const char *name, size_t sz)
+{
+ struct roffreq *req;
+ const char *end;
+
+ if (sz) {
+ end = name + sz;
+ req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
+ } else
+ req = ohash_find(htab, ohash_qlookup(htab, name));
+ return req == NULL ? TOKEN_NONE : req->tok;
}
+/* --- stack of request blocks -------------------------------------------- */
/*
* Pop the current node off of the stack of roff instructions currently
- * pending.
+ * pending. Return 1 if it is a loop or 0 otherwise.
*/
-static void
+static int
roffnode_pop(struct roff *r)
{
struct roffnode *p;
+ int inloop;
- assert(r->last);
- p = r->last;
-
- r->last = r->last->parent;
+ p = r->last;
+ inloop = p->tok == ROFF_while;
+ r->last = p->parent;
free(p->name);
free(p->end);
free(p);
+ return inloop;
}
-
/*
* Push a roff node onto the instruction stack. This must later be
* removed with roffnode_pop().
*/
static void
-roffnode_push(struct roff *r, enum rofft tok, const char *name,
+roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
int line, int col)
{
struct roffnode *p;
p->parent = r->last;
p->line = line;
p->col = col;
- p->rule = p->parent ? p->parent->rule : ROFFRULE_DENY;
+ p->rule = p->parent ? p->parent->rule : 0;
r->last = p;
}
+/* --- roff parser state data management ---------------------------------- */
static void
roff_free1(struct roff *r)
{
- struct tbl_node *tbl;
- struct eqn_node *e;
int i;
- while (NULL != (tbl = r->first_tbl)) {
- r->first_tbl = tbl->next;
- tbl_free(tbl);
- }
-
+ tbl_free(r->first_tbl);
r->first_tbl = r->last_tbl = r->tbl = NULL;
- while (NULL != (e = r->first_eqn)) {
- r->first_eqn = e->next;
- eqn_free(e);
- }
+ eqn_free(r->last_eqn);
+ r->last_eqn = r->eqn = NULL;
- r->first_eqn = r->last_eqn = r->eqn = NULL;
+ while (r->mstackpos >= 0)
+ roff_userret(r);
while (r->last)
roffnode_pop(r);
- roff_freestr(r->strtab);
- roff_freestr(r->xmbtab);
-
- r->strtab = r->xmbtab = NULL;
+ free (r->rstack);
+ r->rstack = NULL;
+ r->rstacksz = 0;
+ r->rstackpos = -1;
roff_freereg(r->regtab);
-
r->regtab = NULL;
+ roff_freestr(r->strtab);
+ roff_freestr(r->rentab);
+ roff_freestr(r->xmbtab);
+ r->strtab = r->rentab = r->xmbtab = NULL;
+
if (r->xtab)
for (i = 0; i < 128; i++)
free(r->xtab[i].p);
-
free(r->xtab);
r->xtab = NULL;
}
void
roff_reset(struct roff *r)
{
- int i;
-
roff_free1(r);
-
- r->control = 0;
-
- for (i = 0; i < PREDEFS_MAX; i++)
- roff_setstr(r, predefs[i].name, predefs[i].str, 0);
+ r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
+ r->control = '\0';
+ r->escape = '\\';
+ roffce_lines = 0;
+ roffce_node = NULL;
+ roffit_lines = 0;
+ roffit_macro = NULL;
}
-
void
roff_free(struct roff *r)
{
+ int i;
roff_free1(r);
+ for (i = 0; i < r->mstacksz; i++)
+ free(r->mstack[i].argv);
+ free(r->mstack);
+ roffhash_free(r->reqtab);
free(r);
}
-
struct roff *
-roff_alloc(enum mparset type, struct mparse *parse)
+roff_alloc(int options)
{
struct roff *r;
- int i;
r = mandoc_calloc(1, sizeof(struct roff));
- r->parsetype = type;
- r->parse = parse;
+ r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
+ r->options = options;
+ r->format = options & (MPARSE_MDOC | MPARSE_MAN);
+ r->mstackpos = -1;
r->rstackpos = -1;
-
- roffhash_init();
+ r->escape = '\\';
+ return r;
+}
- for (i = 0; i < PREDEFS_MAX; i++)
- roff_setstr(r, predefs[i].name, predefs[i].str, 0);
+/* --- syntax tree state data management ---------------------------------- */
- return(r);
+static void
+roff_man_free1(struct roff_man *man)
+{
+ if (man->meta.first != NULL)
+ roff_node_delete(man, man->meta.first);
+ free(man->meta.msec);
+ free(man->meta.vol);
+ free(man->meta.os);
+ free(man->meta.arch);
+ free(man->meta.title);
+ free(man->meta.name);
+ free(man->meta.date);
+ free(man->meta.sodest);
}
-/*
- * In the current line, expand user-defined strings ("\*")
- * and references to number registers ("\n").
- * Also check the syntax of other escape sequences.
- */
-static enum rofferr
-roff_res(struct roff *r, char **bufp, size_t *szp, int ln, int pos)
+void
+roff_state_reset(struct roff_man *man)
{
- char ubuf[12]; /* buffer to print the number */
- const char *stesc; /* start of an escape sequence ('\\') */
- const char *stnam; /* start of the name, after "[(*" */
- const char *cp; /* end of the name, e.g. before ']' */
- const char *res; /* the string to be substituted */
- char *nbuf; /* new buffer to copy bufp to */
- size_t nsz; /* size of the new buffer */
- size_t maxl; /* expected length of the escape name */
- size_t naml; /* actual length of the escape name */
- int expand_count; /* to avoid infinite loops */
-
- expand_count = 0;
+ man->last = man->meta.first;
+ man->last_es = NULL;
+ man->flags = 0;
+ man->lastsec = man->lastnamed = SEC_NONE;
+ man->next = ROFF_NEXT_CHILD;
+ roff_setreg(man->roff, "nS", 0, '=');
+}
-again:
- cp = *bufp + pos;
- while (NULL != (cp = strchr(cp, '\\'))) {
- stesc = cp++;
+static void
+roff_man_alloc1(struct roff_man *man)
+{
+ memset(&man->meta, 0, sizeof(man->meta));
+ man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
+ man->meta.first->type = ROFFT_ROOT;
+ man->meta.macroset = MACROSET_NONE;
+ roff_state_reset(man);
+}
- /*
- * The second character must be an asterisk or an n.
- * If it isn't, skip it anyway: It is escaped,
- * so it can't start another escape sequence.
- */
+void
+roff_man_reset(struct roff_man *man)
+{
+ roff_man_free1(man);
+ roff_man_alloc1(man);
+}
- if ('\0' == *cp)
- return(ROFF_CONT);
+void
+roff_man_free(struct roff_man *man)
+{
+ roff_man_free1(man);
+ free(man);
+}
- switch (*cp) {
- case ('*'):
- res = NULL;
- break;
- case ('n'):
- res = ubuf;
- break;
- default:
- if (ESCAPE_ERROR != mandoc_escape(&cp, NULL, NULL))
- continue;
- mandoc_msg
- (MANDOCERR_BADESCAPE, r->parse,
- ln, (int)(stesc - *bufp), NULL);
- return(ROFF_CONT);
- }
+struct roff_man *
+roff_man_alloc(struct roff *roff, const char *os_s, int quick)
+{
+ struct roff_man *man;
+
+ man = mandoc_calloc(1, sizeof(*man));
+ man->roff = roff;
+ man->os_s = os_s;
+ man->quick = quick;
+ roff_man_alloc1(man);
+ roff->man = man;
+ return man;
+}
- cp++;
+/* --- syntax tree handling ----------------------------------------------- */
- /*
- * The third character decides the length
- * of the name of the string or register.
- * Save a pointer to the name.
- */
+struct roff_node *
+roff_node_alloc(struct roff_man *man, int line, int pos,
+ enum roff_type type, int tok)
+{
+ struct roff_node *n;
- switch (*cp) {
- case ('\0'):
- return(ROFF_CONT);
- case ('('):
- cp++;
- maxl = 2;
- break;
- case ('['):
- cp++;
- maxl = 0;
- break;
- default:
- maxl = 1;
- break;
- }
- stnam = cp;
+ n = mandoc_calloc(1, sizeof(*n));
+ n->line = line;
+ n->pos = pos;
+ n->tok = tok;
+ n->type = type;
+ n->sec = man->lastsec;
- /* Advance to the end of the name. */
+ if (man->flags & MDOC_SYNOPSIS)
+ n->flags |= NODE_SYNPRETTY;
+ else
+ n->flags &= ~NODE_SYNPRETTY;
+ if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
+ n->flags |= NODE_NOFILL;
+ else
+ n->flags &= ~NODE_NOFILL;
+ if (man->flags & MDOC_NEWLINE)
+ n->flags |= NODE_LINE;
+ man->flags &= ~MDOC_NEWLINE;
- for (naml = 0; 0 == maxl || naml < maxl; naml++, cp++) {
- if ('\0' == *cp) {
- mandoc_msg
- (MANDOCERR_BADESCAPE,
- r->parse, ln,
- (int)(stesc - *bufp), NULL);
- return(ROFF_CONT);
- }
- if (0 == maxl && ']' == *cp)
- break;
- }
+ return n;
+}
- /*
- * Retrieve the replacement string; if it is
- * undefined, resume searching for escapes.
- */
+void
+roff_node_append(struct roff_man *man, struct roff_node *n)
+{
- if (NULL == res)
- res = roff_getstrn(r, stnam, naml);
- else
- snprintf(ubuf, sizeof(ubuf), "%d",
- roff_getregn(r, stnam, naml));
-
- if (NULL == res) {
- mandoc_msg
- (MANDOCERR_BADESCAPE, r->parse,
- ln, (int)(stesc - *bufp), NULL);
- res = "";
- }
+ switch (man->next) {
+ case ROFF_NEXT_SIBLING:
+ if (man->last->next != NULL) {
+ n->next = man->last->next;
+ man->last->next->prev = n;
+ } else
+ man->last->parent->last = n;
+ man->last->next = n;
+ n->prev = man->last;
+ n->parent = man->last->parent;
+ break;
+ case ROFF_NEXT_CHILD:
+ if (man->last->child != NULL) {
+ n->next = man->last->child;
+ man->last->child->prev = n;
+ } else
+ man->last->last = n;
+ man->last->child = n;
+ n->parent = man->last;
+ break;
+ default:
+ abort();
+ }
+ man->last = n;
- /* Replace the escape sequence by the string. */
+ switch (n->type) {
+ case ROFFT_HEAD:
+ n->parent->head = n;
+ break;
+ case ROFFT_BODY:
+ if (n->end != ENDBODY_NOT)
+ return;
+ n->parent->body = n;
+ break;
+ case ROFFT_TAIL:
+ n->parent->tail = n;
+ break;
+ default:
+ return;
+ }
- pos = stesc - *bufp;
+ /*
+ * Copy over the normalised-data pointer of our parent. Not
+ * everybody has one, but copying a null pointer is fine.
+ */
- nsz = *szp + strlen(res) + 1;
- nbuf = mandoc_malloc(nsz);
+ n->norm = n->parent->norm;
+ assert(n->parent->type == ROFFT_BLOCK);
+}
- strlcpy(nbuf, *bufp, (size_t)(stesc - *bufp + 1));
- strlcat(nbuf, res, nsz);
- strlcat(nbuf, cp + (maxl ? 0 : 1), nsz);
+void
+roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
+{
+ struct roff_node *n;
- free(*bufp);
+ n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
+ n->string = roff_strdup(man->roff, word);
+ roff_node_append(man, n);
+ n->flags |= NODE_VALID | NODE_ENDED;
+ man->next = ROFF_NEXT_SIBLING;
+}
- *bufp = nbuf;
- *szp = nsz;
+void
+roff_word_append(struct roff_man *man, const char *word)
+{
+ struct roff_node *n;
+ char *addstr, *newstr;
+
+ n = man->last;
+ addstr = roff_strdup(man->roff, word);
+ mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
+ free(addstr);
+ free(n->string);
+ n->string = newstr;
+ man->next = ROFF_NEXT_SIBLING;
+}
- if (EXPAND_LIMIT >= ++expand_count)
- goto again;
+void
+roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
+{
+ struct roff_node *n;
- /* Just leave the string unexpanded. */
- mandoc_msg(MANDOCERR_ROFFLOOP, r->parse, ln, pos, NULL);
- return(ROFF_IGN);
- }
- return(ROFF_CONT);
+ n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
+ roff_node_append(man, n);
+ man->next = ROFF_NEXT_CHILD;
}
-/*
- * Process text streams:
- * Convert all breakable hyphens into ASCII_HYPH.
- * Decrement and spring input line trap.
- */
-static enum rofferr
-roff_parsetext(char **bufp, size_t *szp, int pos, int *offs)
+struct roff_node *
+roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
{
- size_t sz;
- const char *start;
- char *p;
- int isz;
- enum mandoc_esc esc;
-
- start = p = *bufp + pos;
+ struct roff_node *n;
- while ('\0' != *p) {
- sz = strcspn(p, "-\\");
- p += sz;
+ n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
+ roff_node_append(man, n);
+ man->next = ROFF_NEXT_CHILD;
+ return n;
+}
- if ('\0' == *p)
- break;
+struct roff_node *
+roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
+{
+ struct roff_node *n;
- if ('\\' == *p) {
- /* Skip over escapes. */
- p++;
- esc = mandoc_escape
- ((const char const **)&p, NULL, NULL);
- if (ESCAPE_ERROR == esc)
- break;
- continue;
- } else if (p == start) {
- p++;
- continue;
- }
+ n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
+ roff_node_append(man, n);
+ man->next = ROFF_NEXT_CHILD;
+ return n;
+}
- if (isalpha((unsigned char)p[-1]) &&
- isalpha((unsigned char)p[1]))
- *p = ASCII_HYPH;
- p++;
- }
+struct roff_node *
+roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
+{
+ struct roff_node *n;
- /* Spring the input line trap. */
- if (1 == roffit_lines) {
- isz = asprintf(&p, "%s\n.%s", *bufp, roffit_macro);
- if (-1 == isz) {
- perror(NULL);
- exit((int)MANDOCLEVEL_SYSERR);
- }
- free(*bufp);
- *bufp = p;
- *szp = isz + 1;
- *offs = 0;
- free(roffit_macro);
- roffit_lines = 0;
- return(ROFF_REPARSE);
- } else if (1 < roffit_lines)
- --roffit_lines;
- return(ROFF_CONT);
+ n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
+ roff_node_append(man, n);
+ man->next = ROFF_NEXT_CHILD;
+ return n;
}
-enum rofferr
-roff_parseln(struct roff *r, int ln, char **bufp,
- size_t *szp, int pos, int *offs)
+static void
+roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
{
- enum rofft t;
- enum rofferr e;
- int ppos, ctl;
+ struct roff_node *n;
+ struct tbl_span *span;
+
+ if (man->meta.macroset == MACROSET_MAN)
+ man_breakscope(man, ROFF_TS);
+ while ((span = tbl_span(tbl)) != NULL) {
+ n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
+ n->span = span;
+ roff_node_append(man, n);
+ n->flags |= NODE_VALID | NODE_ENDED;
+ man->next = ROFF_NEXT_SIBLING;
+ }
+}
- /*
- * Run the reserved-word filter only if we have some reserved
- * words to fill in.
- */
+void
+roff_node_unlink(struct roff_man *man, struct roff_node *n)
+{
- e = roff_res(r, bufp, szp, ln, pos);
- if (ROFF_IGN == e)
- return(e);
- assert(ROFF_CONT == e);
+ /* Adjust siblings. */
- ppos = pos;
- ctl = roff_getcontrol(r, *bufp, &pos);
+ if (n->prev)
+ n->prev->next = n->next;
+ if (n->next)
+ n->next->prev = n->prev;
- /*
- * First, if a scope is open and we're not a macro, pass the
- * text through the macro's filter. If a scope isn't open and
- * we're not a macro, just let it through.
- * Finally, if there's an equation scope open, divert it into it
- * no matter our state.
- */
+ /* Adjust parent. */
- if (r->last && ! ctl) {
- t = r->last->tok;
- assert(roffs[t].text);
- e = (*roffs[t].text)
- (r, t, bufp, szp, ln, pos, pos, offs);
- assert(ROFF_IGN == e || ROFF_CONT == e);
- if (ROFF_CONT != e)
- return(e);
- }
- if (r->eqn)
- return(eqn_read(&r->eqn, ln, *bufp, ppos, offs));
- if ( ! ctl) {
- if (r->tbl)
- return(tbl_read(r->tbl, ln, *bufp, pos));
- return(roff_parsetext(bufp, szp, pos, offs));
+ if (n->parent != NULL) {
+ if (n->parent->child == n)
+ n->parent->child = n->next;
+ if (n->parent->last == n)
+ n->parent->last = n->prev;
}
- /*
- * If a scope is open, go to the child handler for that macro,
- * as it may want to preprocess before doing anything with it.
- * Don't do so if an equation is open.
- */
+ /* Adjust parse point. */
- if (r->last) {
- t = r->last->tok;
- assert(roffs[t].sub);
- return((*roffs[t].sub)
- (r, t, bufp, szp,
- ln, ppos, pos, offs));
+ if (man == NULL)
+ return;
+ if (man->last == n) {
+ if (n->prev == NULL) {
+ man->last = n->parent;
+ man->next = ROFF_NEXT_CHILD;
+ } else {
+ man->last = n->prev;
+ man->next = ROFF_NEXT_SIBLING;
+ }
}
-
- /*
- * Lastly, as we've no scope open, try to look up and execute
- * the new macro. If no macro is found, simply return and let
- * the compilers handle it.
- */
-
- if (ROFF_MAX == (t = roff_parse(r, *bufp, &pos)))
- return(ROFF_CONT);
-
- assert(roffs[t].proc);
- return((*roffs[t].proc)
- (r, t, bufp, szp,
- ln, ppos, pos, offs));
+ if (man->meta.first == n)
+ man->meta.first = NULL;
}
+void
+roff_node_relink(struct roff_man *man, struct roff_node *n)
+{
+ roff_node_unlink(man, n);
+ n->prev = n->next = NULL;
+ roff_node_append(man, n);
+}
void
-roff_endparse(struct roff *r)
+roff_node_free(struct roff_node *n)
{
- if (r->last)
- mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse,
- r->last->line, r->last->col, NULL);
+ if (n->args != NULL)
+ mdoc_argv_free(n->args);
+ if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
+ free(n->norm);
+ eqn_box_free(n->eqn);
+ free(n->string);
+ free(n);
+}
- if (r->eqn) {
- mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse,
- r->eqn->eqn.ln, r->eqn->eqn.pos, NULL);
- eqn_end(&r->eqn);
- }
+void
+roff_node_delete(struct roff_man *man, struct roff_node *n)
+{
- if (r->tbl) {
- mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse,
- r->tbl->line, r->tbl->pos, NULL);
- tbl_end(&r->tbl);
- }
+ while (n->child != NULL)
+ roff_node_delete(man, n->child);
+ roff_node_unlink(man, n);
+ roff_node_free(n);
}
-/*
- * Parse a roff node's type from the input buffer. This must be in the
- * form of ".foo xxx" in the usual way.
- */
-static enum rofft
-roff_parse(struct roff *r, const char *buf, int *pos)
+void
+deroff(char **dest, const struct roff_node *n)
{
- const char *mac;
- size_t maclen;
- enum rofft t;
+ char *cp;
+ size_t sz;
- if ('\0' == buf[*pos] || '"' == buf[*pos] ||
- '\t' == buf[*pos] || ' ' == buf[*pos])
- return(ROFF_MAX);
+ if (n->type != ROFFT_TEXT) {
+ for (n = n->child; n != NULL; n = n->next)
+ deroff(dest, n);
+ return;
+ }
- /*
- * We stop the macro parse at an escape, tab, space, or nil.
- * However, `\}' is also a valid macro, so make sure we don't
- * clobber it by seeing the `\' as the end of token.
- */
+ /* Skip leading whitespace. */
- mac = buf + *pos;
- maclen = strcspn(mac + 1, " \\\t\0") + 1;
+ for (cp = n->string; *cp != '\0'; cp++) {
+ if (cp[0] == '\\' && cp[1] != '\0' &&
+ strchr(" %&0^|~", cp[1]) != NULL)
+ cp++;
+ else if ( ! isspace((unsigned char)*cp))
+ break;
+ }
- t = (r->current_string = roff_getstrn(r, mac, maclen))
- ? ROFF_USERDEF : roffhash_find(mac, maclen);
+ /* Skip trailing backslash. */
- *pos += (int)maclen;
+ sz = strlen(cp);
+ if (sz > 0 && cp[sz - 1] == '\\')
+ sz--;
- while (buf[*pos] && ' ' == buf[*pos])
- (*pos)++;
+ /* Skip trailing whitespace. */
- return(t);
-}
+ for (; sz; sz--)
+ if ( ! isspace((unsigned char)cp[sz-1]))
+ break;
-/* ARGSUSED */
-static enum rofferr
-roff_cblock(ROFF_ARGS)
-{
+ /* Skip empty strings. */
- /*
- * A block-close `..' should only be invoked as a child of an
- * ignore macro, otherwise raise a warning and just ignore it.
- */
+ if (sz == 0)
+ return;
- if (NULL == r->last) {
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
+ if (*dest == NULL) {
+ *dest = mandoc_strndup(cp, sz);
+ return;
}
- switch (r->last->tok) {
- case (ROFF_am):
- /* FALLTHROUGH */
- case (ROFF_ami):
- /* FALLTHROUGH */
- case (ROFF_am1):
- /* FALLTHROUGH */
- case (ROFF_de):
- /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
- /* FALLTHROUGH */
- case (ROFF_dei):
- /* FALLTHROUGH */
- case (ROFF_ig):
+ mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
+ free(*dest);
+ *dest = cp;
+}
+
+/* --- main functions of the roff parser ---------------------------------- */
+
+/*
+ * In the current line, expand escape sequences that produce parsable
+ * input text. Also check the syntax of the remaining escape sequences,
+ * which typically produce output glyphs or change formatter state.
+ */
+static int
+roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
+{
+ struct mctx *ctx; /* current macro call context */
+ char ubuf[24]; /* buffer to print the number */
+ struct roff_node *n; /* used for header comments */
+ const char *start; /* start of the string to process */
+ char *stesc; /* start of an escape sequence ('\\') */
+ const char *esct; /* type of esccape sequence */
+ char *ep; /* end of comment string */
+ const char *stnam; /* start of the name, after "[(*" */
+ const char *cp; /* end of the name, e.g. before ']' */
+ const char *res; /* the string to be substituted */
+ char *nbuf; /* new buffer to copy buf->buf to */
+ size_t maxl; /* expected length of the escape name */
+ size_t naml; /* actual length of the escape name */
+ size_t asz; /* length of the replacement */
+ size_t rsz; /* length of the rest of the string */
+ int inaml; /* length returned from mandoc_escape() */
+ int expand_count; /* to avoid infinite loops */
+ int npos; /* position in numeric expression */
+ int arg_complete; /* argument not interrupted by eol */
+ int quote_args; /* true for \\$@, false for \\$* */
+ int done; /* no more input available */
+ int deftype; /* type of definition to paste */
+ int rcsid; /* kind of RCS id seen */
+ enum mandocerr err; /* for escape sequence problems */
+ char sign; /* increment number register */
+ char term; /* character terminating the escape */
+
+ /* Search forward for comments. */
+
+ done = 0;
+ start = buf->buf + pos;
+ for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
+ if (stesc[0] != newesc || stesc[1] == '\0')
+ continue;
+ stesc++;
+ if (*stesc != '"' && *stesc != '#')
+ continue;
+
+ /* Comment found, look for RCS id. */
+
+ rcsid = 0;
+ if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
+ rcsid = 1 << MANDOC_OS_OPENBSD;
+ cp += 8;
+ } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
+ rcsid = 1 << MANDOC_OS_NETBSD;
+ cp += 7;
+ }
+ if (cp != NULL &&
+ isalnum((unsigned char)*cp) == 0 &&
+ strchr(cp, '$') != NULL) {
+ if (r->man->meta.rcsids & rcsid)
+ mandoc_msg(MANDOCERR_RCS_REP, ln,
+ (int)(stesc - buf->buf) + 1,
+ "%s", stesc + 1);
+ r->man->meta.rcsids |= rcsid;
+ }
+
+ /* Handle trailing whitespace. */
+
+ ep = strchr(stesc--, '\0') - 1;
+ if (*ep == '\n') {
+ done = 1;
+ ep--;
+ }
+ if (*ep == ' ' || *ep == '\t')
+ mandoc_msg(MANDOCERR_SPACE_EOL,
+ ln, (int)(ep - buf->buf), NULL);
+
+ /*
+ * Save comments preceding the title macro
+ * in the syntax tree.
+ */
+
+ if (newesc != ASCII_ESC && r->format == 0) {
+ while (*ep == ' ' || *ep == '\t')
+ ep--;
+ ep[1] = '\0';
+ n = roff_node_alloc(r->man,
+ ln, stesc + 1 - buf->buf,
+ ROFFT_COMMENT, TOKEN_NONE);
+ n->string = mandoc_strdup(stesc + 2);
+ roff_node_append(r->man, n);
+ n->flags |= NODE_VALID | NODE_ENDED;
+ r->man->next = ROFF_NEXT_SIBLING;
+ }
+
+ /* Line continuation with comment. */
+
+ if (stesc[1] == '#') {
+ *stesc = '\0';
+ return ROFF_IGN | ROFF_APPEND;
+ }
+
+ /* Discard normal comments. */
+
+ while (stesc > start && stesc[-1] == ' ' &&
+ (stesc == start + 1 || stesc[-2] != '\\'))
+ stesc--;
+ *stesc = '\0';
break;
- default:
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
}
+ if (stesc == start)
+ return ROFF_CONT;
+ stesc--;
- if ((*bufp)[pos])
- mandoc_msg(MANDOCERR_ARGSLOST, r->parse, ln, pos, NULL);
+ /* Notice the end of the input. */
- roffnode_pop(r);
- roffnode_cleanscope(r);
- return(ROFF_IGN);
+ if (*stesc == '\n') {
+ *stesc-- = '\0';
+ done = 1;
+ }
+
+ expand_count = 0;
+ while (stesc >= start) {
+ if (*stesc != newesc) {
+
+ /*
+ * If we have a non-standard escape character,
+ * escape literal backslashes because all
+ * processing in subsequent functions uses
+ * the standard escaping rules.
+ */
+
+ if (newesc != ASCII_ESC && *stesc == '\\') {
+ *stesc = '\0';
+ buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
+ buf->buf, stesc + 1) + 1;
+ start = nbuf + pos;
+ stesc = nbuf + (stesc - buf->buf);
+ free(buf->buf);
+ buf->buf = nbuf;
+ }
+
+ /* Search backwards for the next escape. */
+
+ stesc--;
+ continue;
+ }
+
+ /* If it is escaped, skip it. */
+
+ for (cp = stesc - 1; cp >= start; cp--)
+ if (*cp != r->escape)
+ break;
+
+ if ((stesc - cp) % 2 == 0) {
+ while (stesc > cp)
+ *stesc-- = '\\';
+ continue;
+ } else if (stesc[1] != '\0') {
+ *stesc = '\\';
+ } else {
+ *stesc-- = '\0';
+ if (done)
+ continue;
+ else
+ return ROFF_IGN | ROFF_APPEND;
+ }
+
+ /* Decide whether to expand or to check only. */
+
+ term = '\0';
+ cp = stesc + 1;
+ if (*cp == 'E')
+ cp++;
+ esct = cp;
+ switch (*esct) {
+ case '*':
+ case '$':
+ res = NULL;
+ break;
+ case 'B':
+ case 'w':
+ term = cp[1];
+ /* FALLTHROUGH */
+ case 'n':
+ sign = cp[1];
+ if (sign == '+' || sign == '-')
+ cp++;
+ res = ubuf;
+ break;
+ default:
+ err = MANDOCERR_OK;
+ switch(mandoc_escape(&cp, &stnam, &inaml)) {
+ case ESCAPE_SPECIAL:
+ if (mchars_spec2cp(stnam, inaml) >= 0)
+ break;
+ /* FALLTHROUGH */
+ case ESCAPE_ERROR:
+ err = MANDOCERR_ESC_BAD;
+ break;
+ case ESCAPE_UNDEF:
+ err = MANDOCERR_ESC_UNDEF;
+ break;
+ case ESCAPE_UNSUPP:
+ err = MANDOCERR_ESC_UNSUPP;
+ break;
+ default:
+ break;
+ }
+ if (err != MANDOCERR_OK)
+ mandoc_msg(err, ln, (int)(stesc - buf->buf),
+ "%.*s", (int)(cp - stesc), stesc);
+ stesc--;
+ continue;
+ }
+
+ if (EXPAND_LIMIT < ++expand_count) {
+ mandoc_msg(MANDOCERR_ROFFLOOP,
+ ln, (int)(stesc - buf->buf), NULL);
+ return ROFF_IGN;
+ }
+
+ /*
+ * The third character decides the length
+ * of the name of the string or register.
+ * Save a pointer to the name.
+ */
+
+ if (term == '\0') {
+ switch (*++cp) {
+ case '\0':
+ maxl = 0;
+ break;
+ case '(':
+ cp++;
+ maxl = 2;
+ break;
+ case '[':
+ cp++;
+ term = ']';
+ maxl = 0;
+ break;
+ default:
+ maxl = 1;
+ break;
+ }
+ } else {
+ cp += 2;
+ maxl = 0;
+ }
+ stnam = cp;
+
+ /* Advance to the end of the name. */
+
+ naml = 0;
+ arg_complete = 1;
+ while (maxl == 0 || naml < maxl) {
+ if (*cp == '\0') {
+ mandoc_msg(MANDOCERR_ESC_BAD, ln,
+ (int)(stesc - buf->buf), "%s", stesc);
+ arg_complete = 0;
+ break;
+ }
+ if (maxl == 0 && *cp == term) {
+ cp++;
+ break;
+ }
+ if (*cp++ != '\\' || *esct != 'w') {
+ naml++;
+ continue;
+ }
+ switch (mandoc_escape(&cp, NULL, NULL)) {
+ case ESCAPE_SPECIAL:
+ case ESCAPE_UNICODE:
+ case ESCAPE_NUMBERED:
+ case ESCAPE_UNDEF:
+ case ESCAPE_OVERSTRIKE:
+ naml++;
+ break;
+ default:
+ break;
+ }
+ }
+
+ /*
+ * Retrieve the replacement string; if it is
+ * undefined, resume searching for escapes.
+ */
+
+ switch (*esct) {
+ case '*':
+ if (arg_complete) {
+ deftype = ROFFDEF_USER | ROFFDEF_PRE;
+ res = roff_getstrn(r, stnam, naml, &deftype);
+
+ /*
+ * If not overriden, let \*(.T
+ * through to the formatters.
+ */
+
+ if (res == NULL && naml == 2 &&
+ stnam[0] == '.' && stnam[1] == 'T') {
+ roff_setstrn(&r->strtab,
+ ".T", 2, NULL, 0, 0);
+ stesc--;
+ continue;
+ }
+ }
+ break;
+ case '$':
+ if (r->mstackpos < 0) {
+ mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
+ (int)(stesc - buf->buf), "%.3s", stesc);
+ break;
+ }
+ ctx = r->mstack + r->mstackpos;
+ npos = esct[1] - '1';
+ if (npos >= 0 && npos <= 8) {
+ res = npos < ctx->argc ?
+ ctx->argv[npos] : "";
+ break;
+ }
+ if (esct[1] == '*')
+ quote_args = 0;
+ else if (esct[1] == '@')
+ quote_args = 1;
+ else {
+ mandoc_msg(MANDOCERR_ARG_NONUM, ln,
+ (int)(stesc - buf->buf), "%.3s", stesc);
+ break;
+ }
+ asz = 0;
+ for (npos = 0; npos < ctx->argc; npos++) {
+ if (npos)
+ asz++; /* blank */
+ if (quote_args)
+ asz += 2; /* quotes */
+ asz += strlen(ctx->argv[npos]);
+ }
+ if (asz != 3) {
+ rsz = buf->sz - (stesc - buf->buf) - 3;
+ if (asz < 3)
+ memmove(stesc + asz, stesc + 3, rsz);
+ buf->sz += asz - 3;
+ nbuf = mandoc_realloc(buf->buf, buf->sz);
+ start = nbuf + pos;
+ stesc = nbuf + (stesc - buf->buf);
+ buf->buf = nbuf;
+ if (asz > 3)
+ memmove(stesc + asz, stesc + 3, rsz);
+ }
+ for (npos = 0; npos < ctx->argc; npos++) {
+ if (npos)
+ *stesc++ = ' ';
+ if (quote_args)
+ *stesc++ = '"';
+ cp = ctx->argv[npos];
+ while (*cp != '\0')
+ *stesc++ = *cp++;
+ if (quote_args)
+ *stesc++ = '"';
+ }
+ continue;
+ case 'B':
+ npos = 0;
+ ubuf[0] = arg_complete &&
+ roff_evalnum(r, ln, stnam, &npos,
+ NULL, ROFFNUM_SCALE) &&
+ stnam + npos + 1 == cp ? '1' : '0';
+ ubuf[1] = '\0';
+ break;
+ case 'n':
+ if (arg_complete)
+ (void)snprintf(ubuf, sizeof(ubuf), "%d",
+ roff_getregn(r, stnam, naml, sign));
+ else
+ ubuf[0] = '\0';
+ break;
+ case 'w':
+ /* use even incomplete args */
+ (void)snprintf(ubuf, sizeof(ubuf), "%d",
+ 24 * (int)naml);
+ break;
+ }
+
+ if (res == NULL) {
+ if (*esct == '*')
+ mandoc_msg(MANDOCERR_STR_UNDEF,
+ ln, (int)(stesc - buf->buf),
+ "%.*s", (int)naml, stnam);
+ res = "";
+ } else if (buf->sz + strlen(res) > SHRT_MAX) {
+ mandoc_msg(MANDOCERR_ROFFLOOP,
+ ln, (int)(stesc - buf->buf), NULL);
+ return ROFF_IGN;
+ }
+
+ /* Replace the escape sequence by the string. */
+
+ *stesc = '\0';
+ buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
+ buf->buf, res, cp) + 1;
+
+ /* Prepare for the next replacement. */
+ start = nbuf + pos;
+ stesc = nbuf + (stesc - buf->buf) + strlen(res);
+ free(buf->buf);
+ buf->buf = nbuf;
+ }
+ return ROFF_CONT;
}
+/*
+ * Parse a quoted or unquoted roff-style request or macro argument.
+ * Return a pointer to the parsed argument, which is either the original
+ * pointer or advanced by one byte in case the argument is quoted.
+ * NUL-terminate the argument in place.
+ * Collapse pairs of quotes inside quoted arguments.
+ * Advance the argument pointer to the next argument,
+ * or to the NUL byte terminating the argument line.
+ */
+char *
+roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
+{
+ struct buf buf;
+ char *cp, *start;
+ int newesc, pairs, quoted, white;
+
+ /* Quoting can only start with a new word. */
+ start = *cpp;
+ quoted = 0;
+ if ('"' == *start) {
+ quoted = 1;
+ start++;
+ }
-static void
-roffnode_cleanscope(struct roff *r)
+ newesc = pairs = white = 0;
+ for (cp = start; '\0' != *cp; cp++) {
+
+ /*
+ * Move the following text left
+ * after quoted quotes and after "\\" and "\t".
+ */
+ if (pairs)
+ cp[-pairs] = cp[0];
+
+ if ('\\' == cp[0]) {
+ /*
+ * In copy mode, translate double to single
+ * backslashes and backslash-t to literal tabs.
+ */
+ switch (cp[1]) {
+ case 'a':
+ case 't':
+ cp[-pairs] = '\t';
+ pairs++;
+ cp++;
+ break;
+ case '\\':
+ newesc = 1;
+ cp[-pairs] = ASCII_ESC;
+ pairs++;
+ cp++;
+ break;
+ case ' ':
+ /* Skip escaped blanks. */
+ if (0 == quoted)
+ cp++;
+ break;
+ default:
+ break;
+ }
+ } else if (0 == quoted) {
+ if (' ' == cp[0]) {
+ /* Unescaped blanks end unquoted args. */
+ white = 1;
+ break;
+ }
+ } else if ('"' == cp[0]) {
+ if ('"' == cp[1]) {
+ /* Quoted quotes collapse. */
+ pairs++;
+ cp++;
+ } else {
+ /* Unquoted quotes end quoted args. */
+ quoted = 2;
+ break;
+ }
+ }
+ }
+
+ /* Quoted argument without a closing quote. */
+ if (1 == quoted)
+ mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
+
+ /* NUL-terminate this argument and move to the next one. */
+ if (pairs)
+ cp[-pairs] = '\0';
+ if ('\0' != *cp) {
+ *cp++ = '\0';
+ while (' ' == *cp)
+ cp++;
+ }
+ *pos += (int)(cp - start) + (quoted ? 1 : 0);
+ *cpp = cp;
+
+ if ('\0' == *cp && (white || ' ' == cp[-1]))
+ mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
+
+ start = mandoc_strdup(start);
+ if (newesc == 0)
+ return start;
+
+ buf.buf = start;
+ buf.sz = strlen(start) + 1;
+ buf.next = NULL;
+ if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
+ free(buf.buf);
+ buf.buf = mandoc_strdup("");
+ }
+ return buf.buf;
+}
+
+
+/*
+ * Process text streams.
+ */
+static int
+roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
{
+ size_t sz;
+ const char *start;
+ char *p;
+ int isz;
+ enum mandoc_esc esc;
- while (r->last) {
- if (--r->last->endspan != 0)
+ /* Spring the input line trap. */
+
+ if (roffit_lines == 1) {
+ isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
+ free(buf->buf);
+ buf->buf = p;
+ buf->sz = isz + 1;
+ *offs = 0;
+ free(roffit_macro);
+ roffit_lines = 0;
+ return ROFF_REPARSE;
+ } else if (roffit_lines > 1)
+ --roffit_lines;
+
+ if (roffce_node != NULL && buf->buf[pos] != '\0') {
+ if (roffce_lines < 1) {
+ r->man->last = roffce_node;
+ r->man->next = ROFF_NEXT_SIBLING;
+ roffce_lines = 0;
+ roffce_node = NULL;
+ } else
+ roffce_lines--;
+ }
+
+ /* Convert all breakable hyphens into ASCII_HYPH. */
+
+ start = p = buf->buf + pos;
+
+ while (*p != '\0') {
+ sz = strcspn(p, "-\\");
+ p += sz;
+
+ if (*p == '\0')
break;
- roffnode_pop(r);
+
+ if (*p == '\\') {
+ /* Skip over escapes. */
+ p++;
+ esc = mandoc_escape((const char **)&p, NULL, NULL);
+ if (esc == ESCAPE_ERROR)
+ break;
+ while (*p == '-')
+ p++;
+ continue;
+ } else if (p == start) {
+ p++;
+ continue;
+ }
+
+ if (isalpha((unsigned char)p[-1]) &&
+ isalpha((unsigned char)p[1]))
+ *p = ASCII_HYPH;
+ p++;
}
+ return ROFF_CONT;
}
+int
+roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
+{
+ enum roff_tok t;
+ int e;
+ int pos; /* parse point */
+ int spos; /* saved parse point for messages */
+ int ppos; /* original offset in buf->buf */
+ int ctl; /* macro line (boolean) */
+
+ ppos = pos = *offs;
+
+ /* Handle in-line equation delimiters. */
+
+ if (r->tbl == NULL &&
+ r->last_eqn != NULL && r->last_eqn->delim &&
+ (r->eqn == NULL || r->eqn_inline)) {
+ e = roff_eqndelim(r, buf, pos);
+ if (e == ROFF_REPARSE)
+ return e;
+ assert(e == ROFF_CONT);
+ }
+
+ /* Expand some escape sequences. */
+
+ e = roff_expand(r, buf, ln, pos, r->escape);
+ if ((e & ROFF_MASK) == ROFF_IGN)
+ return e;
+ assert(e == ROFF_CONT);
+
+ ctl = roff_getcontrol(r, buf->buf, &pos);
+
+ /*
+ * First, if a scope is open and we're not a macro, pass the
+ * text through the macro's filter.
+ * Equations process all content themselves.
+ * Tables process almost all content themselves, but we want
+ * to warn about macros before passing it there.
+ */
+
+ if (r->last != NULL && ! ctl) {
+ t = r->last->tok;
+ e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
+ if ((e & ROFF_MASK) == ROFF_IGN)
+ return e;
+ e &= ~ROFF_MASK;
+ } else
+ e = ROFF_IGN;
+ if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
+ eqn_read(r->eqn, buf->buf + ppos);
+ return e;
+ }
+ if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
+ tbl_read(r->tbl, ln, buf->buf, ppos);
+ roff_addtbl(r->man, ln, r->tbl);
+ return e;
+ }
+ if ( ! ctl)
+ return roff_parsetext(r, buf, pos, offs) | e;
+
+ /* Skip empty request lines. */
+
+ if (buf->buf[pos] == '"') {
+ mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
+ return ROFF_IGN;
+ } else if (buf->buf[pos] == '\0')
+ return ROFF_IGN;
+
+ /*
+ * If a scope is open, go to the child handler for that macro,
+ * as it may want to preprocess before doing anything with it.
+ * Don't do so if an equation is open.
+ */
+
+ if (r->last) {
+ t = r->last->tok;
+ return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
+ }
+
+ /* No scope is open. This is a new request or macro. */
+
+ spos = pos;
+ t = roff_parse(r, buf->buf, &pos, ln, ppos);
+
+ /* Tables ignore most macros. */
+
+ if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
+ t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
+ mandoc_msg(MANDOCERR_TBLMACRO,
+ ln, pos, "%s", buf->buf + spos);
+ if (t != TOKEN_NONE)
+ return ROFF_IGN;
+ while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
+ pos++;
+ while (buf->buf[pos] == ' ')
+ pos++;
+ tbl_read(r->tbl, ln, buf->buf, pos);
+ roff_addtbl(r->man, ln, r->tbl);
+ return ROFF_IGN;
+ }
+
+ /* For now, let high level macros abort .ce mode. */
+
+ if (ctl && roffce_node != NULL &&
+ (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
+ t == ROFF_TH || t == ROFF_TS)) {
+ r->man->last = roffce_node;
+ r->man->next = ROFF_NEXT_SIBLING;
+ roffce_lines = 0;
+ roffce_node = NULL;
+ }
+
+ /*
+ * This is neither a roff request nor a user-defined macro.
+ * Let the standard macro set parsers handle it.
+ */
+
+ if (t == TOKEN_NONE)
+ return ROFF_CONT;
+
+ /* Execute a roff request or a user defined macro. */
-/* ARGSUSED */
-static enum rofferr
-roff_ccond(ROFF_ARGS)
+ return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
+}
+
+/*
+ * Internal interface function to tell the roff parser that execution
+ * of the current macro ended. This is required because macro
+ * definitions usually do not end with a .return request.
+ */
+void
+roff_userret(struct roff *r)
{
+ struct mctx *ctx;
+ int i;
- if (NULL == r->last) {
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
+ assert(r->mstackpos >= 0);
+ ctx = r->mstack + r->mstackpos;
+ for (i = 0; i < ctx->argc; i++)
+ free(ctx->argv[i]);
+ ctx->argc = 0;
+ r->mstackpos--;
+}
+
+void
+roff_endparse(struct roff *r)
+{
+ if (r->last != NULL)
+ mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
+ r->last->col, "%s", roff_name[r->last->tok]);
+
+ if (r->eqn != NULL) {
+ mandoc_msg(MANDOCERR_BLK_NOEND,
+ r->eqn->node->line, r->eqn->node->pos, "EQ");
+ eqn_parse(r->eqn);
+ r->eqn = NULL;
}
- switch (r->last->tok) {
- case (ROFF_el):
- /* FALLTHROUGH */
- case (ROFF_ie):
- /* FALLTHROUGH */
- case (ROFF_if):
+ if (r->tbl != NULL) {
+ tbl_end(r->tbl, 1);
+ r->tbl = NULL;
+ }
+}
+
+/*
+ * Parse a roff node's type from the input buffer. This must be in the
+ * form of ".foo xxx" in the usual way.
+ */
+static enum roff_tok
+roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
+{
+ char *cp;
+ const char *mac;
+ size_t maclen;
+ int deftype;
+ enum roff_tok t;
+
+ cp = buf + *pos;
+
+ if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
+ return TOKEN_NONE;
+
+ mac = cp;
+ maclen = roff_getname(r, &cp, ln, ppos);
+
+ deftype = ROFFDEF_USER | ROFFDEF_REN;
+ r->current_string = roff_getstrn(r, mac, maclen, &deftype);
+ switch (deftype) {
+ case ROFFDEF_USER:
+ t = ROFF_USERDEF;
+ break;
+ case ROFFDEF_REN:
+ t = ROFF_RENAMED;
break;
default:
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
+ t = roffhash_find(r->reqtab, mac, maclen);
+ break;
+ }
+ if (t != TOKEN_NONE)
+ *pos = cp - buf;
+ else if (deftype == ROFFDEF_UNDEF) {
+ /* Using an undefined macro defines it to be empty. */
+ roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
+ roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
}
+ return t;
+}
- if (r->last->endspan > -1) {
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
+/* --- handling of request blocks ----------------------------------------- */
+
+static int
+roff_cblock(ROFF_ARGS)
+{
+
+ /*
+ * A block-close `..' should only be invoked as a child of an
+ * ignore macro, otherwise raise a warning and just ignore it.
+ */
+
+ if (r->last == NULL) {
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
+ return ROFF_IGN;
+ }
+
+ switch (r->last->tok) {
+ case ROFF_am:
+ /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
+ case ROFF_ami:
+ case ROFF_de:
+ /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
+ case ROFF_dei:
+ case ROFF_ig:
+ break;
+ default:
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
+ return ROFF_IGN;
}
- if ((*bufp)[pos])
- mandoc_msg(MANDOCERR_ARGSLOST, r->parse, ln, pos, NULL);
+ if (buf->buf[pos] != '\0')
+ mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
+ ".. %s", buf->buf + pos);
roffnode_pop(r);
roffnode_cleanscope(r);
- return(ROFF_IGN);
+ return ROFF_IGN;
+
}
+/*
+ * Pop all nodes ending at the end of the current input line.
+ * Return the number of loops ended.
+ */
+static int
+roffnode_cleanscope(struct roff *r)
+{
+ int inloop;
+
+ inloop = 0;
+ while (r->last != NULL) {
+ if (--r->last->endspan != 0)
+ break;
+ inloop += roffnode_pop(r);
+ }
+ return inloop;
+}
-/* ARGSUSED */
-static enum rofferr
-roff_block(ROFF_ARGS)
+/*
+ * Handle the closing \} of a conditional block.
+ * Apart from generating warnings, this only pops nodes.
+ * Return the number of loops ended.
+ */
+static int
+roff_ccond(struct roff *r, int ln, int ppos)
{
- int sv;
- size_t sz;
- char *name;
+ if (NULL == r->last) {
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
+ return 0;
+ }
- name = NULL;
+ switch (r->last->tok) {
+ case ROFF_el:
+ case ROFF_ie:
+ case ROFF_if:
+ case ROFF_while:
+ break;
+ default:
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
+ return 0;
+ }
- if (ROFF_ig != tok) {
- if ('\0' == (*bufp)[pos]) {
- mandoc_msg(MANDOCERR_NOARGS, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
- }
+ if (r->last->endspan > -1) {
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
+ return 0;
+ }
- /*
- * Re-write `de1', since we don't really care about
- * groff's strange compatibility mode, into `de'.
- */
+ return roffnode_pop(r) + roffnode_cleanscope(r);
+}
- if (ROFF_de1 == tok)
- tok = ROFF_de;
- if (ROFF_de == tok)
- name = *bufp + pos;
- else
- mandoc_msg(MANDOCERR_REQUEST, r->parse, ln, ppos,
- roffs[tok].name);
+static int
+roff_block(ROFF_ARGS)
+{
+ const char *name, *value;
+ char *call, *cp, *iname, *rname;
+ size_t csz, namesz, rsz;
+ int deftype;
+
+ /* Ignore groff compatibility mode for now. */
+
+ if (tok == ROFF_de1)
+ tok = ROFF_de;
+ else if (tok == ROFF_dei1)
+ tok = ROFF_dei;
+ else if (tok == ROFF_am1)
+ tok = ROFF_am;
+ else if (tok == ROFF_ami1)
+ tok = ROFF_ami;
+
+ /* Parse the macro name argument. */
+
+ cp = buf->buf + pos;
+ if (tok == ROFF_ig) {
+ iname = NULL;
+ namesz = 0;
+ } else {
+ iname = cp;
+ namesz = roff_getname(r, &cp, ln, ppos);
+ iname[namesz] = '\0';
+ }
- while ((*bufp)[pos] && ! isspace((unsigned char)(*bufp)[pos]))
- pos++;
+ /* Resolve the macro name argument if it is indirect. */
- while (isspace((unsigned char)(*bufp)[pos]))
- (*bufp)[pos++] = '\0';
+ if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
+ deftype = ROFFDEF_USER;
+ name = roff_getstrn(r, iname, namesz, &deftype);
+ if (name == NULL) {
+ mandoc_msg(MANDOCERR_STR_UNDEF,
+ ln, (int)(iname - buf->buf),
+ "%.*s", (int)namesz, iname);
+ namesz = 0;
+ } else
+ namesz = strlen(name);
+ } else
+ name = iname;
+
+ if (namesz == 0 && tok != ROFF_ig) {
+ mandoc_msg(MANDOCERR_REQ_EMPTY,
+ ln, ppos, "%s", roff_name[tok]);
+ return ROFF_IGN;
}
roffnode_push(r, tok, name, ln, ppos);
/*
* At the beginning of a `de' macro, clear the existing string
* with the same name, if there is one. New content will be
- * added from roff_block_text() in multiline mode.
+ * appended from roff_block_text() in multiline mode.
*/
- if (ROFF_de == tok)
- roff_setstr(r, name, "", 0);
-
- if ('\0' == (*bufp)[pos])
- return(ROFF_IGN);
-
- /* If present, process the custom end-of-line marker. */
+ if (tok == ROFF_de || tok == ROFF_dei) {
+ roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
+ roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
+ } else if (tok == ROFF_am || tok == ROFF_ami) {
+ deftype = ROFFDEF_ANY;
+ value = roff_getstrn(r, iname, namesz, &deftype);
+ switch (deftype) { /* Before appending, ... */
+ case ROFFDEF_PRE: /* copy predefined to user-defined. */
+ roff_setstrn(&r->strtab, name, namesz,
+ value, strlen(value), 0);
+ break;
+ case ROFFDEF_REN: /* call original standard macro. */
+ csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
+ (int)strlen(value), value);
+ roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
+ roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
+ free(call);
+ break;
+ case ROFFDEF_STD: /* rename and call standard macro. */
+ rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
+ roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
+ csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
+ (int)rsz, rname);
+ roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
+ free(call);
+ free(rname);
+ break;
+ default:
+ break;
+ }
+ }
- sv = pos;
- while ((*bufp)[pos] && ! isspace((unsigned char)(*bufp)[pos]))
- pos++;
+ if (*cp == '\0')
+ return ROFF_IGN;
- /*
- * Note: groff does NOT like escape characters in the input.
- * Instead of detecting this, we're just going to let it fly and
- * to hell with it.
- */
+ /* Get the custom end marker. */
- assert(pos > sv);
- sz = (size_t)(pos - sv);
+ iname = cp;
+ namesz = roff_getname(r, &cp, ln, ppos);
- if (1 == sz && '.' == (*bufp)[sv])
- return(ROFF_IGN);
+ /* Resolve the end marker if it is indirect. */
- r->last->end = mandoc_malloc(sz + 1);
+ if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
+ deftype = ROFFDEF_USER;
+ name = roff_getstrn(r, iname, namesz, &deftype);
+ if (name == NULL) {
+ mandoc_msg(MANDOCERR_STR_UNDEF,
+ ln, (int)(iname - buf->buf),
+ "%.*s", (int)namesz, iname);
+ namesz = 0;
+ } else
+ namesz = strlen(name);
+ } else
+ name = iname;
- memcpy(r->last->end, *bufp + sv, sz);
- r->last->end[(int)sz] = '\0';
+ if (namesz)
+ r->last->end = mandoc_strndup(name, namesz);
- if ((*bufp)[pos])
- mandoc_msg(MANDOCERR_ARGSLOST, r->parse, ln, pos, NULL);
+ if (*cp != '\0')
+ mandoc_msg(MANDOCERR_ARG_EXCESS,
+ ln, pos, ".%s ... %s", roff_name[tok], cp);
- return(ROFF_IGN);
+ return ROFF_IGN;
}
-
-/* ARGSUSED */
-static enum rofferr
+static int
roff_block_sub(ROFF_ARGS)
{
- enum rofft t;
+ enum roff_tok t;
int i, j;
/*
if (r->last->end) {
for (i = pos, j = 0; r->last->end[j]; j++, i++)
- if ((*bufp)[i] != r->last->end[j])
+ if (buf->buf[i] != r->last->end[j])
break;
- if ('\0' == r->last->end[j] &&
- ('\0' == (*bufp)[i] ||
- ' ' == (*bufp)[i] ||
- '\t' == (*bufp)[i])) {
+ if (r->last->end[j] == '\0' &&
+ (buf->buf[i] == '\0' ||
+ buf->buf[i] == ' ' ||
+ buf->buf[i] == '\t')) {
roffnode_pop(r);
roffnode_cleanscope(r);
- while (' ' == (*bufp)[i] || '\t' == (*bufp)[i])
+ while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
i++;
pos = i;
- if (ROFF_MAX != roff_parse(r, *bufp, &pos))
- return(ROFF_RERUN);
- return(ROFF_IGN);
+ if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
+ TOKEN_NONE)
+ return ROFF_RERUN;
+ return ROFF_IGN;
}
}
* pulling it out of the hashtable.
*/
- t = roff_parse(r, *bufp, &pos);
+ t = roff_parse(r, buf->buf, &pos, ln, ppos);
- /*
- * Macros other than block-end are only significant
- * in `de' blocks; elsewhere, simply throw them away.
- */
- if (ROFF_cblock != t) {
- if (ROFF_de == tok)
- roff_setstr(r, r->last->name, *bufp + ppos, 1);
- return(ROFF_IGN);
+ if (t != ROFF_cblock) {
+ if (tok != ROFF_ig)
+ roff_setstr(r, r->last->name, buf->buf + ppos, 2);
+ return ROFF_IGN;
}
- assert(roffs[t].proc);
- return((*roffs[t].proc)(r, t, bufp, szp,
- ln, ppos, pos, offs));
+ return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
}
-
-/* ARGSUSED */
-static enum rofferr
+static int
roff_block_text(ROFF_ARGS)
{
- if (ROFF_de == tok)
- roff_setstr(r, r->last->name, *bufp + pos, 1);
+ if (tok != ROFF_ig)
+ roff_setstr(r, r->last->name, buf->buf + pos, 2);
- return(ROFF_IGN);
+ return ROFF_IGN;
}
-
-/* ARGSUSED */
-static enum rofferr
+static int
roff_cond_sub(ROFF_ARGS)
{
- enum rofft t;
- enum roffrule rr;
+ struct roffnode *bl;
char *ep;
+ int endloop, irc, rr;
+ enum roff_tok t;
+ irc = ROFF_IGN;
rr = r->last->rule;
- roffnode_cleanscope(r);
- t = roff_parse(r, *bufp, &pos);
+ endloop = tok != ROFF_while ? ROFF_IGN :
+ rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
+ if (roffnode_cleanscope(r))
+ irc |= endloop;
+
+ /*
+ * If `\}' occurs on a macro line without a preceding macro,
+ * drop the line completely.
+ */
+
+ ep = buf->buf + pos;
+ if (ep[0] == '\\' && ep[1] == '}')
+ rr = 0;
+
+ /*
+ * The closing delimiter `\}' rewinds the conditional scope
+ * but is otherwise ignored when interpreting the line.
+ */
+
+ while ((ep = strchr(ep, '\\')) != NULL) {
+ switch (ep[1]) {
+ case '}':
+ memmove(ep, ep + 2, strlen(ep + 2) + 1);
+ if (roff_ccond(r, ln, ep - buf->buf))
+ irc |= endloop;
+ break;
+ case '\0':
+ ++ep;
+ break;
+ default:
+ ep += 2;
+ break;
+ }
+ }
/*
* Fully handle known macros when they are structurally
* required or when the conditional evaluated to true.
*/
- if ((ROFF_MAX != t) &&
- (ROFF_ccond == t || ROFFRULE_ALLOW == rr ||
- ROFFMAC_STRUCT & roffs[t].flags)) {
- assert(roffs[t].proc);
- return((*roffs[t].proc)(r, t, bufp, szp,
- ln, ppos, pos, offs));
+ t = roff_parse(r, buf->buf, &pos, ln, ppos);
+ if (t == ROFF_break) {
+ if (irc & ROFF_LOOPMASK)
+ irc = ROFF_IGN | ROFF_LOOPEXIT;
+ else if (rr) {
+ for (bl = r->last; bl != NULL; bl = bl->parent) {
+ bl->rule = 0;
+ if (bl->tok == ROFF_while)
+ break;
+ }
+ }
+ } else if (t != TOKEN_NONE &&
+ (rr || roffs[t].flags & ROFFMAC_STRUCT))
+ irc |= (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
+ else
+ irc |= rr ? ROFF_CONT : ROFF_IGN;
+ return irc;
+}
+
+static int
+roff_cond_text(ROFF_ARGS)
+{
+ char *ep;
+ int endloop, irc, rr;
+
+ irc = ROFF_IGN;
+ rr = r->last->rule;
+ endloop = tok != ROFF_while ? ROFF_IGN :
+ rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
+ if (roffnode_cleanscope(r))
+ irc |= endloop;
+
+ /*
+ * If `\}' occurs on a text line with neither preceding
+ * nor following characters, drop the line completely.
+ */
+
+ ep = buf->buf + pos;
+ if (strcmp(ep, "\\}") == 0)
+ rr = 0;
+
+ /*
+ * The closing delimiter `\}' rewinds the conditional scope
+ * but is otherwise ignored when interpreting the line.
+ */
+
+ while ((ep = strchr(ep, '\\')) != NULL) {
+ switch (ep[1]) {
+ case '}':
+ memmove(ep, ep + 2, strlen(ep + 2) + 1);
+ if (roff_ccond(r, ln, ep - buf->buf))
+ irc |= endloop;
+ break;
+ case '\0':
+ ++ep;
+ break;
+ default:
+ ep += 2;
+ break;
+ }
}
+ if (rr)
+ irc |= ROFF_CONT;
+ return irc;
+}
- /* Always check for the closing delimiter `\}'. */
+/* --- handling of numeric and conditional expressions -------------------- */
- ep = &(*bufp)[pos];
- while (NULL != (ep = strchr(ep, '\\'))) {
- if ('}' != *(++ep))
- continue;
+/*
+ * Parse a single signed integer number. Stop at the first non-digit.
+ * If there is at least one digit, return success and advance the
+ * parse point, else return failure and let the parse point unchanged.
+ * Ignore overflows, treat them just like the C language.
+ */
+static int
+roff_getnum(const char *v, int *pos, int *res, int flags)
+{
+ int myres, scaled, n, p;
- /*
- * If we're at the end of line, then just chop
- * off the \} and resize the buffer.
- * If we aren't, then convert it to spaces.
- */
+ if (NULL == res)
+ res = &myres;
- if ('\0' == *(ep + 1)) {
- *--ep = '\0';
- *szp -= 2;
- } else
- *(ep - 1) = *ep = ' ';
+ p = *pos;
+ n = v[p] == '-';
+ if (n || v[p] == '+')
+ p++;
- roff_ccond(r, ROFF_ccond, bufp, szp,
- ln, pos, pos + 2, offs);
+ if (flags & ROFFNUM_WHITE)
+ while (isspace((unsigned char)v[p]))
+ p++;
+
+ for (*res = 0; isdigit((unsigned char)v[p]); p++)
+ *res = 10 * *res + v[p] - '0';
+ if (p == *pos + n)
+ return 0;
+
+ if (n)
+ *res = -*res;
+
+ /* Each number may be followed by one optional scaling unit. */
+
+ switch (v[p]) {
+ case 'f':
+ scaled = *res * 65536;
+ break;
+ case 'i':
+ scaled = *res * 240;
+ break;
+ case 'c':
+ scaled = *res * 240 / 2.54;
+ break;
+ case 'v':
+ case 'P':
+ scaled = *res * 40;
+ break;
+ case 'm':
+ case 'n':
+ scaled = *res * 24;
+ break;
+ case 'p':
+ scaled = *res * 10 / 3;
+ break;
+ case 'u':
+ scaled = *res;
+ break;
+ case 'M':
+ scaled = *res * 6 / 25;
+ break;
+ default:
+ scaled = *res;
+ p--;
break;
}
- return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT);
+ if (flags & ROFFNUM_SCALE)
+ *res = scaled;
+
+ *pos = p + 1;
+ return 1;
}
-/* ARGSUSED */
-static enum rofferr
-roff_cond_text(ROFF_ARGS)
+/*
+ * Evaluate a string comparison condition.
+ * The first character is the delimiter.
+ * Succeed if the string up to its second occurrence
+ * matches the string up to its third occurence.
+ * Advance the cursor after the third occurrence
+ * or lacking that, to the end of the line.
+ */
+static int
+roff_evalstrcond(const char *v, int *pos)
{
- char *ep;
- enum roffrule rr;
+ const char *s1, *s2, *s3;
+ int match;
- rr = r->last->rule;
- roffnode_cleanscope(r);
+ match = 0;
+ s1 = v + *pos; /* initial delimiter */
+ s2 = s1 + 1; /* for scanning the first string */
+ s3 = strchr(s2, *s1); /* for scanning the second string */
- ep = &(*bufp)[pos];
- for ( ; NULL != (ep = strchr(ep, '\\')); ep++) {
- ep++;
- if ('}' != *ep)
- continue;
- *ep = '&';
- roff_ccond(r, ROFF_ccond, bufp, szp,
- ln, pos, pos + 2, offs);
+ if (NULL == s3) /* found no middle delimiter */
+ goto out;
+
+ while ('\0' != *++s3) {
+ if (*s2 != *s3) { /* mismatch */
+ s3 = strchr(s3, *s1);
+ break;
+ }
+ if (*s3 == *s1) { /* found the final delimiter */
+ match = 1;
+ break;
+ }
+ s2++;
}
- return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT);
+
+out:
+ if (NULL == s3)
+ s3 = strchr(s2, '\0');
+ else if (*s3 != '\0')
+ s3++;
+ *pos = s3 - v;
+ return match;
}
-static enum roffrule
-roff_evalcond(const char *v, int *pos)
+/*
+ * Evaluate an optionally negated single character, numerical,
+ * or string condition.
+ */
+static int
+roff_evalcond(struct roff *r, int ln, char *v, int *pos)
{
+ const char *start, *end;
+ char *cp, *name;
+ size_t sz;
+ int deftype, len, number, savepos, istrue, wanttrue;
+
+ if ('!' == v[*pos]) {
+ wanttrue = 0;
+ (*pos)++;
+ } else
+ wanttrue = 1;
switch (v[*pos]) {
- case ('n'):
+ case '\0':
+ return 0;
+ case 'n':
+ case 'o':
(*pos)++;
- return(ROFFRULE_ALLOW);
- case ('e'):
- /* FALLTHROUGH */
- case ('o'):
- /* FALLTHROUGH */
- case ('t'):
+ return wanttrue;
+ case 'e':
+ case 't':
+ case 'v':
(*pos)++;
- return(ROFFRULE_DENY);
+ return !wanttrue;
+ case 'c':
+ do {
+ (*pos)++;
+ } while (v[*pos] == ' ');
+
+ /*
+ * Quirk for groff compatibility:
+ * The horizontal tab is neither available nor unavailable.
+ */
+
+ if (v[*pos] == '\t') {
+ (*pos)++;
+ return 0;
+ }
+
+ /* Printable ASCII characters are available. */
+
+ if (v[*pos] != '\\') {
+ (*pos)++;
+ return wanttrue;
+ }
+
+ end = v + ++*pos;
+ switch (mandoc_escape(&end, &start, &len)) {
+ case ESCAPE_SPECIAL:
+ istrue = mchars_spec2cp(start, len) != -1;
+ break;
+ case ESCAPE_UNICODE:
+ istrue = 1;
+ break;
+ case ESCAPE_NUMBERED:
+ istrue = mchars_num2char(start, len) != -1;
+ break;
+ default:
+ istrue = !wanttrue;
+ break;
+ }
+ *pos = end - v;
+ return istrue == wanttrue;
+ case 'd':
+ case 'r':
+ cp = v + *pos + 1;
+ while (*cp == ' ')
+ cp++;
+ name = cp;
+ sz = roff_getname(r, &cp, ln, cp - v);
+ if (sz == 0)
+ istrue = 0;
+ else if (v[*pos] == 'r')
+ istrue = roff_hasregn(r, name, sz);
+ else {
+ deftype = ROFFDEF_ANY;
+ roff_getstrn(r, name, sz, &deftype);
+ istrue = !!deftype;
+ }
+ *pos = (name + sz) - v;
+ return istrue == wanttrue;
default:
break;
}
- while (v[*pos] && ' ' != v[*pos])
- (*pos)++;
- return(ROFFRULE_DENY);
+ savepos = *pos;
+ if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
+ return (number > 0) == wanttrue;
+ else if (*pos == savepos)
+ return roff_evalstrcond(v, pos) == wanttrue;
+ else
+ return 0;
}
-/* ARGSUSED */
-static enum rofferr
+static int
roff_line_ignore(ROFF_ARGS)
{
- return(ROFF_IGN);
+ return ROFF_IGN;
+}
+
+static int
+roff_insec(ROFF_ARGS)
+{
+
+ mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
+ return ROFF_IGN;
+}
+
+static int
+roff_unsupp(ROFF_ARGS)
+{
+
+ mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
+ return ROFF_IGN;
}
-/* ARGSUSED */
-static enum rofferr
+static int
roff_cond(ROFF_ARGS)
{
+ int irc;
roffnode_push(r, tok, NULL, ln, ppos);
- /*
+ /*
* An `.el' has no conditional body: it will consume the value
* of the current rstack entry set in prior `ie' calls or
- * defaults to DENY.
+ * defaults to DENY.
*
* If we're not an `el', however, then evaluate the conditional.
*/
- r->last->rule = ROFF_el == tok ?
- (r->rstackpos < 0 ?
- ROFFRULE_DENY : r->rstack[r->rstackpos--]) :
- roff_evalcond(*bufp, &pos);
+ r->last->rule = tok == ROFF_el ?
+ (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
+ roff_evalcond(r, ln, buf->buf, &pos);
/*
* An if-else will put the NEGATION of the current evaluated
* conditional into the stack of rules.
*/
- if (ROFF_ie == tok) {
- if (r->rstackpos == RSTACK_MAX - 1) {
- mandoc_msg(MANDOCERR_MEM,
- r->parse, ln, ppos, NULL);
- return(ROFF_ERR);
+ if (tok == ROFF_ie) {
+ if (r->rstackpos + 1 == r->rstacksz) {
+ r->rstacksz += 16;
+ r->rstack = mandoc_reallocarray(r->rstack,
+ r->rstacksz, sizeof(int));
}
- r->rstack[++r->rstackpos] =
- ROFFRULE_DENY == r->last->rule ?
- ROFFRULE_ALLOW : ROFFRULE_DENY;
+ r->rstack[++r->rstackpos] = !r->last->rule;
}
/* If the parent has false as its rule, then so do we. */
- if (r->last->parent && ROFFRULE_DENY == r->last->parent->rule)
- r->last->rule = ROFFRULE_DENY;
+ if (r->last->parent && !r->last->parent->rule)
+ r->last->rule = 0;
/*
* Determine scope.
* If there is nothing on the line after the conditional,
* not even whitespace, use next-line scope.
+ * Except that .while does not support next-line scope.
*/
- if ('\0' == (*bufp)[pos]) {
+ if (buf->buf[pos] == '\0' && tok != ROFF_while) {
r->last->endspan = 2;
goto out;
}
- while (' ' == (*bufp)[pos])
+ while (buf->buf[pos] == ' ')
pos++;
/* An opening brace requests multiline scope. */
- if ('\\' == (*bufp)[pos] && '{' == (*bufp)[pos + 1]) {
+ if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
r->last->endspan = -1;
pos += 2;
+ while (buf->buf[pos] == ' ')
+ pos++;
goto out;
- }
+ }
/*
* Anything else following the conditional causes
* nothing but trailing whitespace.
*/
- if ('\0' == (*bufp)[pos])
- mandoc_msg(MANDOCERR_NOARGS, r->parse, ln, ppos, NULL);
+ if (buf->buf[pos] == '\0')
+ mandoc_msg(MANDOCERR_COND_EMPTY,
+ ln, ppos, "%s", roff_name[tok]);
r->last->endspan = 1;
out:
*offs = pos;
- return(ROFF_RERUN);
+ irc = ROFF_RERUN;
+ if (tok == ROFF_while)
+ irc |= ROFF_WHILE;
+ return irc;
}
-
-/* ARGSUSED */
-static enum rofferr
+static int
roff_ds(ROFF_ARGS)
{
- char *name, *string;
+ char *string;
+ const char *name;
+ size_t namesz;
+
+ /* Ignore groff compatibility mode for now. */
+
+ if (tok == ROFF_ds1)
+ tok = ROFF_ds;
+ else if (tok == ROFF_as1)
+ tok = ROFF_as;
/*
- * A symbol is named by the first word following the macro
- * invocation up to a space. Its value is anything after the
- * name's trailing whitespace and optional double-quote. Thus,
- *
- * [.ds foo "bar " ]
- *
- * will have `bar " ' as its value.
+ * The first word is the name of the string.
+ * If it is empty or terminated by an escape sequence,
+ * abort the `ds' request without defining anything.
*/
- string = *bufp + pos;
- name = roff_getname(r, &string, ln, pos);
- if ('\0' == *name)
- return(ROFF_IGN);
+ name = string = buf->buf + pos;
+ if (*name == '\0')
+ return ROFF_IGN;
+
+ namesz = roff_getname(r, &string, ln, pos);
+ switch (name[namesz]) {
+ case '\\':
+ return ROFF_IGN;
+ case '\t':
+ string = buf->buf + pos + namesz;
+ break;
+ default:
+ break;
+ }
- /* Read past initial double-quote. */
- if ('"' == *string)
+ /* Read past the initial double-quote, if any. */
+ if (*string == '"')
string++;
/* The rest is the value. */
- roff_setstr(r, name, string, 0);
- return(ROFF_IGN);
+ roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
+ ROFF_as == tok);
+ roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
+ return ROFF_IGN;
+}
+
+/*
+ * Parse a single operator, one or two characters long.
+ * If the operator is recognized, return success and advance the
+ * parse point, else return failure and let the parse point unchanged.
+ */
+static int
+roff_getop(const char *v, int *pos, char *res)
+{
+
+ *res = v[*pos];
+
+ switch (*res) {
+ case '+':
+ case '-':
+ case '*':
+ case '/':
+ case '%':
+ case '&':
+ case ':':
+ break;
+ case '<':
+ switch (v[*pos + 1]) {
+ case '=':
+ *res = 'l';
+ (*pos)++;
+ break;
+ case '>':
+ *res = '!';
+ (*pos)++;
+ break;
+ case '?':
+ *res = 'i';
+ (*pos)++;
+ break;
+ default:
+ break;
+ }
+ break;
+ case '>':
+ switch (v[*pos + 1]) {
+ case '=':
+ *res = 'g';
+ (*pos)++;
+ break;
+ case '?':
+ *res = 'a';
+ (*pos)++;
+ break;
+ default:
+ break;
+ }
+ break;
+ case '=':
+ if ('=' == v[*pos + 1])
+ (*pos)++;
+ break;
+ default:
+ return 0;
+ }
+ (*pos)++;
+
+ return *res;
+}
+
+/*
+ * Evaluate either a parenthesized numeric expression
+ * or a single signed integer number.
+ */
+static int
+roff_evalpar(struct roff *r, int ln,
+ const char *v, int *pos, int *res, int flags)
+{
+
+ if ('(' != v[*pos])
+ return roff_getnum(v, pos, res, flags);
+
+ (*pos)++;
+ if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
+ return 0;
+
+ /*
+ * Omission of the closing parenthesis
+ * is an error in validation mode,
+ * but ignored in evaluation mode.
+ */
+
+ if (')' == v[*pos])
+ (*pos)++;
+ else if (NULL == res)
+ return 0;
+
+ return 1;
+}
+
+/*
+ * Evaluate a complete numeric expression.
+ * Proceed left to right, there is no concept of precedence.
+ */
+static int
+roff_evalnum(struct roff *r, int ln, const char *v,
+ int *pos, int *res, int flags)
+{
+ int mypos, operand2;
+ char operator;
+
+ if (NULL == pos) {
+ mypos = 0;
+ pos = &mypos;
+ }
+
+ if (flags & ROFFNUM_WHITE)
+ while (isspace((unsigned char)v[*pos]))
+ (*pos)++;
+
+ if ( ! roff_evalpar(r, ln, v, pos, res, flags))
+ return 0;
+
+ while (1) {
+ if (flags & ROFFNUM_WHITE)
+ while (isspace((unsigned char)v[*pos]))
+ (*pos)++;
+
+ if ( ! roff_getop(v, pos, &operator))
+ break;
+
+ if (flags & ROFFNUM_WHITE)
+ while (isspace((unsigned char)v[*pos]))
+ (*pos)++;
+
+ if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
+ return 0;
+
+ if (flags & ROFFNUM_WHITE)
+ while (isspace((unsigned char)v[*pos]))
+ (*pos)++;
+
+ if (NULL == res)
+ continue;
+
+ switch (operator) {
+ case '+':
+ *res += operand2;
+ break;
+ case '-':
+ *res -= operand2;
+ break;
+ case '*':
+ *res *= operand2;
+ break;
+ case '/':
+ if (operand2 == 0) {
+ mandoc_msg(MANDOCERR_DIVZERO,
+ ln, *pos, "%s", v);
+ *res = 0;
+ break;
+ }
+ *res /= operand2;
+ break;
+ case '%':
+ if (operand2 == 0) {
+ mandoc_msg(MANDOCERR_DIVZERO,
+ ln, *pos, "%s", v);
+ *res = 0;
+ break;
+ }
+ *res %= operand2;
+ break;
+ case '<':
+ *res = *res < operand2;
+ break;
+ case '>':
+ *res = *res > operand2;
+ break;
+ case 'l':
+ *res = *res <= operand2;
+ break;
+ case 'g':
+ *res = *res >= operand2;
+ break;
+ case '=':
+ *res = *res == operand2;
+ break;
+ case '!':
+ *res = *res != operand2;
+ break;
+ case '&':
+ *res = *res && operand2;
+ break;
+ case ':':
+ *res = *res || operand2;
+ break;
+ case 'i':
+ if (operand2 < *res)
+ *res = operand2;
+ break;
+ case 'a':
+ if (operand2 > *res)
+ *res = operand2;
+ break;
+ default:
+ abort();
+ }
+ }
+ return 1;
}
+/* --- register management ------------------------------------------------ */
+
void
-roff_setreg(struct roff *r, const char *name, int val)
+roff_setreg(struct roff *r, const char *name, int val, char sign)
+{
+ roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
+}
+
+static void
+roff_setregn(struct roff *r, const char *name, size_t len,
+ int val, char sign, int step)
{
struct roffreg *reg;
/* Search for an existing register with the same name. */
reg = r->regtab;
- while (reg && strcmp(name, reg->key.p))
+ while (reg != NULL && (reg->key.sz != len ||
+ strncmp(reg->key.p, name, len) != 0))
reg = reg->next;
if (NULL == reg) {
/* Create a new register. */
reg = mandoc_malloc(sizeof(struct roffreg));
- reg->key.p = mandoc_strdup(name);
- reg->key.sz = strlen(name);
+ reg->key.p = mandoc_strndup(name, len);
+ reg->key.sz = len;
+ reg->val = 0;
+ reg->step = 0;
reg->next = r->regtab;
r->regtab = reg;
}
- reg->val = val;
+ if ('+' == sign)
+ reg->val += val;
+ else if ('-' == sign)
+ reg->val -= val;
+ else
+ reg->val = val;
+ if (step != INT_MIN)
+ reg->step = step;
+}
+
+/*
+ * Handle some predefined read-only number registers.
+ * For now, return -1 if the requested register is not predefined;
+ * in case a predefined read-only register having the value -1
+ * were to turn up, another special value would have to be chosen.
+ */
+static int
+roff_getregro(const struct roff *r, const char *name)
+{
+
+ switch (*name) {
+ case '$': /* Number of arguments of the last macro evaluated. */
+ return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
+ case 'A': /* ASCII approximation mode is always off. */
+ return 0;
+ case 'g': /* Groff compatibility mode is always on. */
+ return 1;
+ case 'H': /* Fixed horizontal resolution. */
+ return 24;
+ case 'j': /* Always adjust left margin only. */
+ return 0;
+ case 'T': /* Some output device is always defined. */
+ return 1;
+ case 'V': /* Fixed vertical resolution. */
+ return 40;
+ default:
+ return -1;
+ }
+}
+
+int
+roff_getreg(struct roff *r, const char *name)
+{
+ return roff_getregn(r, name, strlen(name), '\0');
}
-int
-roff_getreg(const struct roff *r, const char *name)
+static int
+roff_getregn(struct roff *r, const char *name, size_t len, char sign)
{
struct roffreg *reg;
+ int val;
- for (reg = r->regtab; reg; reg = reg->next)
- if (0 == strcmp(name, reg->key.p))
- return(reg->val);
+ if ('.' == name[0] && 2 == len) {
+ val = roff_getregro(r, name + 1);
+ if (-1 != val)
+ return val;
+ }
+
+ for (reg = r->regtab; reg; reg = reg->next) {
+ if (len == reg->key.sz &&
+ 0 == strncmp(name, reg->key.p, len)) {
+ switch (sign) {
+ case '+':
+ reg->val += reg->step;
+ break;
+ case '-':
+ reg->val -= reg->step;
+ break;
+ default:
+ break;
+ }
+ return reg->val;
+ }
+ }
- return(0);
+ roff_setregn(r, name, len, 0, '\0', INT_MIN);
+ return 0;
}
static int
-roff_getregn(const struct roff *r, const char *name, size_t len)
+roff_hasregn(const struct roff *r, const char *name, size_t len)
{
struct roffreg *reg;
+ int val;
+
+ if ('.' == name[0] && 2 == len) {
+ val = roff_getregro(r, name + 1);
+ if (-1 != val)
+ return 1;
+ }
for (reg = r->regtab; reg; reg = reg->next)
if (len == reg->key.sz &&
0 == strncmp(name, reg->key.p, len))
- return(reg->val);
+ return 1;
- return(0);
+ return 0;
}
static void
}
}
-/* ARGSUSED */
-static enum rofferr
+static int
roff_nr(ROFF_ARGS)
{
- const char *key;
- char *val;
- int iv;
-
- val = *bufp + pos;
- key = roff_getname(r, &val, ln, pos);
-
- iv = mandoc_strntoi(val, strlen(val), 10);
-
- roff_setreg(r, key, iv);
+ char *key, *val, *step;
+ size_t keysz;
+ int iv, is, len;
+ char sign;
+
+ key = val = buf->buf + pos;
+ if (*key == '\0')
+ return ROFF_IGN;
+
+ keysz = roff_getname(r, &val, ln, pos);
+ if (key[keysz] == '\\' || key[keysz] == '\t')
+ return ROFF_IGN;
+
+ sign = *val;
+ if (sign == '+' || sign == '-')
+ val++;
+
+ len = 0;
+ if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
+ return ROFF_IGN;
+
+ step = val + len;
+ while (isspace((unsigned char)*step))
+ step++;
+ if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
+ is = INT_MIN;
+
+ roff_setregn(r, key, keysz, iv, sign, is);
+ return ROFF_IGN;
+}
- return(ROFF_IGN);
+static int
+roff_rr(ROFF_ARGS)
+{
+ struct roffreg *reg, **prev;
+ char *name, *cp;
+ size_t namesz;
+
+ name = cp = buf->buf + pos;
+ if (*name == '\0')
+ return ROFF_IGN;
+ namesz = roff_getname(r, &cp, ln, pos);
+ name[namesz] = '\0';
+
+ prev = &r->regtab;
+ while (1) {
+ reg = *prev;
+ if (reg == NULL || !strcmp(name, reg->key.p))
+ break;
+ prev = ®->next;
+ }
+ if (reg != NULL) {
+ *prev = reg->next;
+ free(reg->key.p);
+ free(reg);
+ }
+ return ROFF_IGN;
}
-/* ARGSUSED */
-static enum rofferr
+/* --- handler functions for roff requests -------------------------------- */
+
+static int
roff_rm(ROFF_ARGS)
{
const char *name;
char *cp;
+ size_t namesz;
- cp = *bufp + pos;
- while ('\0' != *cp) {
- name = roff_getname(r, &cp, ln, (int)(cp - *bufp));
- if ('\0' != *name)
- roff_setstr(r, name, NULL, 0);
+ cp = buf->buf + pos;
+ while (*cp != '\0') {
+ name = cp;
+ namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
+ roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
+ roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
+ if (name[namesz] == '\\' || name[namesz] == '\t')
+ break;
}
- return(ROFF_IGN);
+ return ROFF_IGN;
}
-/* ARGSUSED */
-static enum rofferr
+static int
roff_it(ROFF_ARGS)
{
- char *cp;
- size_t len;
int iv;
/* Parse the number of lines. */
- cp = *bufp + pos;
- len = strcspn(cp, " \t");
- cp[len] = '\0';
- if ((iv = mandoc_strntoi(cp, len, 10)) <= 0) {
- mandoc_msg(MANDOCERR_NUMERIC, r->parse,
- ln, ppos, *bufp + 1);
- return(ROFF_IGN);
+
+ if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
+ mandoc_msg(MANDOCERR_IT_NONUM,
+ ln, ppos, "%s", buf->buf + 1);
+ return ROFF_IGN;
}
- cp += len + 1;
- /* Arm the input line trap. */
+ while (isspace((unsigned char)buf->buf[pos]))
+ pos++;
+
+ /*
+ * Arm the input line trap.
+ * Special-casing "an-trap" is an ugly workaround to cope
+ * with DocBook stupidly fiddling with man(7) internals.
+ */
+
roffit_lines = iv;
- roffit_macro = mandoc_strdup(cp);
- return(ROFF_IGN);
+ roffit_macro = mandoc_strdup(iv != 1 ||
+ strcmp(buf->buf + pos, "an-trap") ?
+ buf->buf + pos : "br");
+ return ROFF_IGN;
}
-/* ARGSUSED */
-static enum rofferr
+static int
roff_Dd(ROFF_ARGS)
{
- const char *const *cp;
-
- if (MPARSE_MDOC != r->parsetype)
- for (cp = __mdoc_reserved; *cp; cp++)
- roff_setstr(r, *cp, NULL, 0);
-
- return(ROFF_CONT);
+ int mask;
+ enum roff_tok t, te;
+
+ switch (tok) {
+ case ROFF_Dd:
+ tok = MDOC_Dd;
+ te = MDOC_MAX;
+ if (r->format == 0)
+ r->format = MPARSE_MDOC;
+ mask = MPARSE_MDOC | MPARSE_QUICK;
+ break;
+ case ROFF_TH:
+ tok = MAN_TH;
+ te = MAN_MAX;
+ if (r->format == 0)
+ r->format = MPARSE_MAN;
+ mask = MPARSE_QUICK;
+ break;
+ default:
+ abort();
+ }
+ if ((r->options & mask) == 0)
+ for (t = tok; t < te; t++)
+ roff_setstr(r, roff_name[t], NULL, 0);
+ return ROFF_CONT;
}
-/* ARGSUSED */
-static enum rofferr
-roff_TH(ROFF_ARGS)
+static int
+roff_TE(ROFF_ARGS)
{
- const char *const *cp;
-
- if (MPARSE_MDOC != r->parsetype)
- for (cp = __man_reserved; *cp; cp++)
- roff_setstr(r, *cp, NULL, 0);
-
- return(ROFF_CONT);
+ r->man->flags &= ~ROFF_NONOFILL;
+ if (r->tbl == NULL) {
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
+ return ROFF_IGN;
+ }
+ if (tbl_end(r->tbl, 0) == 0) {
+ r->tbl = NULL;
+ free(buf->buf);
+ buf->buf = mandoc_strdup(".sp");
+ buf->sz = 4;
+ *offs = 0;
+ return ROFF_REPARSE;
+ }
+ r->tbl = NULL;
+ return ROFF_IGN;
}
-/* ARGSUSED */
-static enum rofferr
-roff_TE(ROFF_ARGS)
+static int
+roff_T_(ROFF_ARGS)
{
if (NULL == r->tbl)
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
else
- tbl_end(&r->tbl);
+ tbl_restart(ln, ppos, r->tbl);
- return(ROFF_IGN);
+ return ROFF_IGN;
}
-/* ARGSUSED */
-static enum rofferr
-roff_T_(ROFF_ARGS)
+/*
+ * Handle in-line equation delimiters.
+ */
+static int
+roff_eqndelim(struct roff *r, struct buf *buf, int pos)
{
+ char *cp1, *cp2;
+ const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
- if (NULL == r->tbl)
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
+ /*
+ * Outside equations, look for an opening delimiter.
+ * If we are inside an equation, we already know it is
+ * in-line, or this function wouldn't have been called;
+ * so look for a closing delimiter.
+ */
+
+ cp1 = buf->buf + pos;
+ cp2 = strchr(cp1, r->eqn == NULL ?
+ r->last_eqn->odelim : r->last_eqn->cdelim);
+ if (cp2 == NULL)
+ return ROFF_CONT;
+
+ *cp2++ = '\0';
+ bef_pr = bef_nl = aft_nl = aft_pr = "";
+
+ /* Handle preceding text, protecting whitespace. */
+
+ if (*buf->buf != '\0') {
+ if (r->eqn == NULL)
+ bef_pr = "\\&";
+ bef_nl = "\n";
+ }
+
+ /*
+ * Prepare replacing the delimiter with an equation macro
+ * and drop leading white space from the equation.
+ */
+
+ if (r->eqn == NULL) {
+ while (*cp2 == ' ')
+ cp2++;
+ mac = ".EQ";
+ } else
+ mac = ".EN";
+
+ /* Handle following text, protecting whitespace. */
+
+ if (*cp2 != '\0') {
+ aft_nl = "\n";
+ if (r->eqn != NULL)
+ aft_pr = "\\&";
+ }
+
+ /* Do the actual replacement. */
+
+ buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
+ bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
+ free(buf->buf);
+ buf->buf = cp1;
+
+ /* Toggle the in-line state of the eqn subsystem. */
+
+ r->eqn_inline = r->eqn == NULL;
+ return ROFF_REPARSE;
+}
+
+static int
+roff_EQ(ROFF_ARGS)
+{
+ struct roff_node *n;
+
+ if (r->man->meta.macroset == MACROSET_MAN)
+ man_breakscope(r->man, ROFF_EQ);
+ n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
+ if (ln > r->man->last->line)
+ n->flags |= NODE_LINE;
+ n->eqn = eqn_box_new();
+ roff_node_append(r->man, n);
+ r->man->next = ROFF_NEXT_SIBLING;
+
+ assert(r->eqn == NULL);
+ if (r->last_eqn == NULL)
+ r->last_eqn = eqn_alloc();
else
- tbl_restart(ppos, ln, r->tbl);
+ eqn_reset(r->last_eqn);
+ r->eqn = r->last_eqn;
+ r->eqn->node = n;
+
+ if (buf->buf[pos] != '\0')
+ mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
+ ".EQ %s", buf->buf + pos);
- return(ROFF_IGN);
+ return ROFF_IGN;
}
-#if 0
static int
-roff_closeeqn(struct roff *r)
+roff_EN(ROFF_ARGS)
{
+ if (r->eqn != NULL) {
+ eqn_parse(r->eqn);
+ r->eqn = NULL;
+ } else
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
+ if (buf->buf[pos] != '\0')
+ mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
+ "EN %s", buf->buf + pos);
+ return ROFF_IGN;
+}
- return(r->eqn && ROFF_EQN == eqn_end(&r->eqn) ? 1 : 0);
+static int
+roff_TS(ROFF_ARGS)
+{
+ if (r->tbl != NULL) {
+ mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
+ tbl_end(r->tbl, 0);
+ }
+ r->man->flags |= ROFF_NONOFILL;
+ r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
+ if (r->last_tbl == NULL)
+ r->first_tbl = r->tbl;
+ r->last_tbl = r->tbl;
+ return ROFF_IGN;
}
-#endif
-static void
-roff_openeqn(struct roff *r, const char *name, int line,
- int offs, const char *buf)
+static int
+roff_noarg(ROFF_ARGS)
{
- struct eqn_node *e;
- int poff;
+ if (r->man->flags & (MAN_BLINE | MAN_ELINE))
+ man_breakscope(r->man, tok);
+ if (tok == ROFF_brp)
+ tok = ROFF_br;
+ roff_elem_alloc(r->man, ln, ppos, tok);
+ if (buf->buf[pos] != '\0')
+ mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
+ "%s %s", roff_name[tok], buf->buf + pos);
+ if (tok == ROFF_nf)
+ r->man->flags |= ROFF_NOFILL;
+ else if (tok == ROFF_fi)
+ r->man->flags &= ~ROFF_NOFILL;
+ r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
+ r->man->next = ROFF_NEXT_SIBLING;
+ return ROFF_IGN;
+}
- assert(NULL == r->eqn);
- e = eqn_alloc(name, offs, line, r->parse);
+static int
+roff_onearg(ROFF_ARGS)
+{
+ struct roff_node *n;
+ char *cp;
+ int npos;
+
+ if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
+ (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
+ tok == ROFF_ti))
+ man_breakscope(r->man, tok);
+
+ if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
+ r->man->last = roffce_node;
+ r->man->next = ROFF_NEXT_SIBLING;
+ }
- if (r->last_eqn)
- r->last_eqn->next = e;
- else
- r->first_eqn = r->last_eqn = e;
+ roff_elem_alloc(r->man, ln, ppos, tok);
+ n = r->man->last;
- r->eqn = r->last_eqn = e;
+ cp = buf->buf + pos;
+ if (*cp != '\0') {
+ while (*cp != '\0' && *cp != ' ')
+ cp++;
+ while (*cp == ' ')
+ *cp++ = '\0';
+ if (*cp != '\0')
+ mandoc_msg(MANDOCERR_ARG_EXCESS,
+ ln, (int)(cp - buf->buf),
+ "%s ... %s", roff_name[tok], cp);
+ roff_word_alloc(r->man, ln, pos, buf->buf + pos);
+ }
- if (buf) {
- poff = 0;
- eqn_read(&r->eqn, line, buf, offs, &poff);
+ if (tok == ROFF_ce || tok == ROFF_rj) {
+ if (r->man->last->type == ROFFT_ELEM) {
+ roff_word_alloc(r->man, ln, pos, "1");
+ r->man->last->flags |= NODE_NOSRC;
+ }
+ npos = 0;
+ if (roff_evalnum(r, ln, r->man->last->string, &npos,
+ &roffce_lines, 0) == 0) {
+ mandoc_msg(MANDOCERR_CE_NONUM,
+ ln, pos, "ce %s", buf->buf + pos);
+ roffce_lines = 1;
+ }
+ if (roffce_lines < 1) {
+ r->man->last = r->man->last->parent;
+ roffce_node = NULL;
+ roffce_lines = 0;
+ } else
+ roffce_node = r->man->last->parent;
+ } else {
+ n->flags |= NODE_VALID | NODE_ENDED;
+ r->man->last = n;
}
+ n->flags |= NODE_LINE;
+ r->man->next = ROFF_NEXT_SIBLING;
+ return ROFF_IGN;
}
-/* ARGSUSED */
-static enum rofferr
-roff_EQ(ROFF_ARGS)
+static int
+roff_manyarg(ROFF_ARGS)
{
+ struct roff_node *n;
+ char *sp, *ep;
+
+ roff_elem_alloc(r->man, ln, ppos, tok);
+ n = r->man->last;
+
+ for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
+ while (*ep != '\0' && *ep != ' ')
+ ep++;
+ while (*ep == ' ')
+ *ep++ = '\0';
+ roff_word_alloc(r->man, ln, sp - buf->buf, sp);
+ }
- roff_openeqn(r, *bufp + pos, ln, ppos, NULL);
- return(ROFF_IGN);
+ n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
+ r->man->last = n;
+ r->man->next = ROFF_NEXT_SIBLING;
+ return ROFF_IGN;
}
-/* ARGSUSED */
-static enum rofferr
-roff_EN(ROFF_ARGS)
+static int
+roff_als(ROFF_ARGS)
{
+ char *oldn, *newn, *end, *value;
+ size_t oldsz, newsz, valsz;
+
+ newn = oldn = buf->buf + pos;
+ if (*newn == '\0')
+ return ROFF_IGN;
+
+ newsz = roff_getname(r, &oldn, ln, pos);
+ if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
+ return ROFF_IGN;
+
+ end = oldn;
+ oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
+ if (oldsz == 0)
+ return ROFF_IGN;
+
+ valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
+ (int)oldsz, oldn);
+ roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
+ roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
+ free(value);
+ return ROFF_IGN;
+}
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
+/*
+ * The .break request only makes sense inside conditionals,
+ * and that case is already handled in roff_cond_sub().
+ */
+static int
+roff_break(ROFF_ARGS)
+{
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
+ return ROFF_IGN;
}
-/* ARGSUSED */
-static enum rofferr
-roff_TS(ROFF_ARGS)
+static int
+roff_cc(ROFF_ARGS)
{
- struct tbl_node *tbl;
+ const char *p;
+
+ p = buf->buf + pos;
- if (r->tbl) {
- mandoc_msg(MANDOCERR_SCOPEBROKEN, r->parse, ln, ppos, NULL);
- tbl_end(&r->tbl);
+ if (*p == '\0' || (r->control = *p++) == '.')
+ r->control = '\0';
+
+ if (*p != '\0')
+ mandoc_msg(MANDOCERR_ARG_EXCESS,
+ ln, p - buf->buf, "cc ... %s", p);
+
+ return ROFF_IGN;
+}
+
+static int
+roff_char(ROFF_ARGS)
+{
+ const char *p, *kp, *vp;
+ size_t ksz, vsz;
+ int font;
+
+ /* Parse the character to be replaced. */
+
+ kp = buf->buf + pos;
+ p = kp + 1;
+ if (*kp == '\0' || (*kp == '\\' &&
+ mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
+ (*p != ' ' && *p != '\0')) {
+ mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
+ return ROFF_IGN;
}
+ ksz = p - kp;
+ while (*p == ' ')
+ p++;
+
+ /*
+ * If the replacement string contains a font escape sequence,
+ * we have to restore the font at the end.
+ */
- tbl = tbl_alloc(ppos, ln, r->parse);
+ vp = p;
+ vsz = strlen(p);
+ font = 0;
+ while (*p != '\0') {
+ if (*p++ != '\\')
+ continue;
+ switch (mandoc_escape(&p, NULL, NULL)) {
+ case ESCAPE_FONT:
+ case ESCAPE_FONTROMAN:
+ case ESCAPE_FONTITALIC:
+ case ESCAPE_FONTBOLD:
+ case ESCAPE_FONTBI:
+ case ESCAPE_FONTCW:
+ case ESCAPE_FONTPREV:
+ font++;
+ break;
+ default:
+ break;
+ }
+ }
+ if (font > 1)
+ mandoc_msg(MANDOCERR_CHAR_FONT,
+ ln, (int)(vp - buf->buf), "%s", vp);
- if (r->last_tbl)
- r->last_tbl->next = tbl;
- else
- r->first_tbl = r->last_tbl = tbl;
+ /*
+ * Approximate the effect of .char using the .tr tables.
+ * XXX In groff, .char and .tr interact differently.
+ */
- r->tbl = r->last_tbl = tbl;
- return(ROFF_IGN);
+ if (ksz == 1) {
+ if (r->xtab == NULL)
+ r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
+ assert((unsigned int)*kp < 128);
+ free(r->xtab[(int)*kp].p);
+ r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
+ "%s%s", vp, font ? "\fP" : "");
+ } else {
+ roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
+ if (font)
+ roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
+ }
+ return ROFF_IGN;
}
-/* ARGSUSED */
-static enum rofferr
-roff_cc(ROFF_ARGS)
+static int
+roff_ec(ROFF_ARGS)
{
const char *p;
- p = *bufp + pos;
-
- if ('\0' == *p || '.' == (r->control = *p++))
- r->control = 0;
+ p = buf->buf + pos;
+ if (*p == '\0')
+ r->escape = '\\';
+ else {
+ r->escape = *p;
+ if (*++p != '\0')
+ mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
+ (int)(p - buf->buf), "ec ... %s", p);
+ }
+ return ROFF_IGN;
+}
- if ('\0' != *p)
- mandoc_msg(MANDOCERR_ARGCOUNT, r->parse, ln, ppos, NULL);
+static int
+roff_eo(ROFF_ARGS)
+{
+ r->escape = '\0';
+ if (buf->buf[pos] != '\0')
+ mandoc_msg(MANDOCERR_ARG_SKIP,
+ ln, pos, "eo %s", buf->buf + pos);
+ return ROFF_IGN;
+}
- return(ROFF_IGN);
+static int
+roff_nop(ROFF_ARGS)
+{
+ while (buf->buf[pos] == ' ')
+ pos++;
+ *offs = pos;
+ return ROFF_RERUN;
}
-/* ARGSUSED */
-static enum rofferr
+static int
roff_tr(ROFF_ARGS)
{
const char *p, *first, *second;
size_t fsz, ssz;
enum mandoc_esc esc;
- p = *bufp + pos;
+ p = buf->buf + pos;
- if ('\0' == *p) {
- mandoc_msg(MANDOCERR_ARGCOUNT, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
+ if (*p == '\0') {
+ mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
+ return ROFF_IGN;
}
- while ('\0' != *p) {
+ while (*p != '\0') {
fsz = ssz = 1;
first = p++;
- if ('\\' == *first) {
+ if (*first == '\\') {
esc = mandoc_escape(&p, NULL, NULL);
- if (ESCAPE_ERROR == esc) {
- mandoc_msg
- (MANDOCERR_BADESCAPE, r->parse,
- ln, (int)(p - *bufp), NULL);
- return(ROFF_IGN);
+ if (esc == ESCAPE_ERROR) {
+ mandoc_msg(MANDOCERR_ESC_BAD, ln,
+ (int)(p - buf->buf), "%s", first);
+ return ROFF_IGN;
}
fsz = (size_t)(p - first);
}
second = p++;
- if ('\\' == *second) {
+ if (*second == '\\') {
esc = mandoc_escape(&p, NULL, NULL);
- if (ESCAPE_ERROR == esc) {
- mandoc_msg
- (MANDOCERR_BADESCAPE, r->parse,
- ln, (int)(p - *bufp), NULL);
- return(ROFF_IGN);
+ if (esc == ESCAPE_ERROR) {
+ mandoc_msg(MANDOCERR_ESC_BAD, ln,
+ (int)(p - buf->buf), "%s", second);
+ return ROFF_IGN;
}
ssz = (size_t)(p - second);
- } else if ('\0' == *second) {
- mandoc_msg(MANDOCERR_ARGCOUNT, r->parse,
- ln, (int)(p - *bufp), NULL);
+ } else if (*second == '\0') {
+ mandoc_msg(MANDOCERR_TR_ODD, ln,
+ (int)(first - buf->buf), "tr %s", first);
second = " ";
p--;
}
if (fsz > 1) {
- roff_setstrn(&r->xmbtab, first,
- fsz, second, ssz, 0);
+ roff_setstrn(&r->xmbtab, first, fsz,
+ second, ssz, 0);
continue;
}
- if (NULL == r->xtab)
- r->xtab = mandoc_calloc
- (128, sizeof(struct roffstr));
+ if (r->xtab == NULL)
+ r->xtab = mandoc_calloc(128,
+ sizeof(struct roffstr));
free(r->xtab[(int)*first].p);
r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
r->xtab[(int)*first].sz = ssz;
}
- return(ROFF_IGN);
+ return ROFF_IGN;
+}
+
+/*
+ * Implementation of the .return request.
+ * There is no need to call roff_userret() from here.
+ * The read module will call that after rewinding the reader stack
+ * to the place from where the current macro was called.
+ */
+static int
+roff_return(ROFF_ARGS)
+{
+ if (r->mstackpos >= 0)
+ return ROFF_IGN | ROFF_USERRET;
+
+ mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
+ return ROFF_IGN;
+}
+
+static int
+roff_rn(ROFF_ARGS)
+{
+ const char *value;
+ char *oldn, *newn, *end;
+ size_t oldsz, newsz;
+ int deftype;
+
+ oldn = newn = buf->buf + pos;
+ if (*oldn == '\0')
+ return ROFF_IGN;
+
+ oldsz = roff_getname(r, &newn, ln, pos);
+ if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
+ return ROFF_IGN;
+
+ end = newn;
+ newsz = roff_getname(r, &end, ln, newn - buf->buf);
+ if (newsz == 0)
+ return ROFF_IGN;
+
+ deftype = ROFFDEF_ANY;
+ value = roff_getstrn(r, oldn, oldsz, &deftype);
+ switch (deftype) {
+ case ROFFDEF_USER:
+ roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
+ roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
+ roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
+ break;
+ case ROFFDEF_PRE:
+ roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
+ roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
+ break;
+ case ROFFDEF_REN:
+ roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
+ roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
+ roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
+ break;
+ case ROFFDEF_STD:
+ roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
+ roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
+ break;
+ default:
+ roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
+ roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
+ break;
+ }
+ return ROFF_IGN;
+}
+
+static int
+roff_shift(ROFF_ARGS)
+{
+ struct mctx *ctx;
+ int levels, i;
+
+ levels = 1;
+ if (buf->buf[pos] != '\0' &&
+ roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
+ mandoc_msg(MANDOCERR_CE_NONUM,
+ ln, pos, "shift %s", buf->buf + pos);
+ levels = 1;
+ }
+ if (r->mstackpos < 0) {
+ mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
+ return ROFF_IGN;
+ }
+ ctx = r->mstack + r->mstackpos;
+ if (levels > ctx->argc) {
+ mandoc_msg(MANDOCERR_SHIFT,
+ ln, pos, "%d, but max is %d", levels, ctx->argc);
+ levels = ctx->argc;
+ }
+ if (levels == 0)
+ return ROFF_IGN;
+ for (i = 0; i < levels; i++)
+ free(ctx->argv[i]);
+ ctx->argc -= levels;
+ for (i = 0; i < ctx->argc; i++)
+ ctx->argv[i] = ctx->argv[i + levels];
+ return ROFF_IGN;
}
-/* ARGSUSED */
-static enum rofferr
+static int
roff_so(ROFF_ARGS)
{
- char *name;
+ char *name, *cp;
- mandoc_msg(MANDOCERR_SO, r->parse, ln, ppos, NULL);
+ name = buf->buf + pos;
+ mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
/*
* Handle `so'. Be EXTREMELY careful, as we shouldn't be
* or using absolute paths.
*/
- name = *bufp + pos;
- if ('/' == *name || strstr(name, "../") || strstr(name, "/..")) {
- mandoc_msg(MANDOCERR_SOPATH, r->parse, ln, pos, NULL);
- return(ROFF_ERR);
+ if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
+ mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
+ buf->sz = mandoc_asprintf(&cp,
+ ".sp\nSee the file %s.\n.sp", name) + 1;
+ free(buf->buf);
+ buf->buf = cp;
+ *offs = 0;
+ return ROFF_REPARSE;
}
*offs = pos;
- return(ROFF_SO);
+ return ROFF_SO;
}
-/* ARGSUSED */
-static enum rofferr
+/* --- user defined strings and macros ------------------------------------ */
+
+static int
roff_userdef(ROFF_ARGS)
{
- const char *arg[9];
- char *cp, *n1, *n2;
- int i;
+ struct mctx *ctx;
+ char *arg, *ap, *dst, *src;
+ size_t sz;
- /*
- * Collect pointers to macro argument strings
- * and null-terminate them.
- */
- cp = *bufp + pos;
- for (i = 0; i < 9; i++)
- arg[i] = '\0' == *cp ? "" :
- mandoc_getarg(r->parse, &cp, ln, &pos);
-
- /*
- * Expand macro arguments.
- */
- *szp = 0;
- n1 = cp = mandoc_strdup(r->current_string);
- while (NULL != (cp = strstr(cp, "\\$"))) {
- i = cp[2] - '1';
- if (0 > i || 8 < i) {
- /* Not an argument invocation. */
- cp += 2;
- continue;
- }
+ /* If the macro is empty, ignore it altogether. */
- *szp = strlen(n1) - 3 + strlen(arg[i]) + 1;
- n2 = mandoc_malloc(*szp);
+ if (*r->current_string == '\0')
+ return ROFF_IGN;
- strlcpy(n2, n1, (size_t)(cp - n1 + 1));
- strlcat(n2, arg[i], *szp);
- strlcat(n2, cp + 3, *szp);
+ /* Initialize a new macro stack context. */
- cp = n2 + (cp - n1);
- free(n1);
- n1 = n2;
+ if (++r->mstackpos == r->mstacksz) {
+ r->mstack = mandoc_recallocarray(r->mstack,
+ r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
+ r->mstacksz += 8;
}
+ ctx = r->mstack + r->mstackpos;
+ ctx->argsz = 0;
+ ctx->argc = 0;
+ ctx->argv = NULL;
/*
- * Replace the macro invocation
- * by the expanded macro.
+ * Collect pointers to macro argument strings,
+ * NUL-terminating them and escaping quotes.
*/
- free(*bufp);
- *bufp = n1;
- if (0 == *szp)
- *szp = strlen(*bufp) + 1;
- return(*szp > 1 && '\n' == (*bufp)[(int)*szp - 2] ?
- ROFF_REPARSE : ROFF_APPEND);
+ src = buf->buf + pos;
+ while (*src != '\0') {
+ if (ctx->argc == ctx->argsz) {
+ ctx->argsz += 8;
+ ctx->argv = mandoc_reallocarray(ctx->argv,
+ ctx->argsz, sizeof(*ctx->argv));
+ }
+ arg = roff_getarg(r, &src, ln, &pos);
+ sz = 1; /* For the terminating NUL. */
+ for (ap = arg; *ap != '\0'; ap++)
+ sz += *ap == '"' ? 4 : 1;
+ ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
+ for (ap = arg; *ap != '\0'; ap++) {
+ if (*ap == '"') {
+ memcpy(dst, "\\(dq", 4);
+ dst += 4;
+ } else
+ *dst++ = *ap;
+ }
+ *dst = '\0';
+ free(arg);
+ }
+
+ /* Replace the macro invocation by the macro definition. */
+
+ free(buf->buf);
+ buf->buf = mandoc_strdup(r->current_string);
+ buf->sz = strlen(buf->buf) + 1;
+ *offs = 0;
+
+ return buf->buf[buf->sz - 2] == '\n' ?
+ ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
+}
+
+/*
+ * Calling a high-level macro that was renamed with .rn.
+ * r->current_string has already been set up by roff_parse().
+ */
+static int
+roff_renamed(ROFF_ARGS)
+{
+ char *nbuf;
+
+ buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
+ buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
+ free(buf->buf);
+ buf->buf = nbuf;
+ *offs = 0;
+ return ROFF_CONT;
}
-static char *
+/*
+ * Measure the length in bytes of the roff identifier at *cpp
+ * and advance the pointer to the next word.
+ */
+static size_t
roff_getname(struct roff *r, char **cpp, int ln, int pos)
{
char *name, *cp;
+ size_t namesz;
name = *cpp;
- if ('\0' == *name)
- return(name);
+ if (*name == '\0')
+ return 0;
- /* Read until end of name. */
- for (cp = name; '\0' != *cp && ' ' != *cp; cp++) {
- if ('\\' != *cp)
+ /* Advance cp to the byte after the end of the name. */
+
+ for (cp = name; 1; cp++) {
+ namesz = cp - name;
+ if (*cp == '\0')
+ break;
+ if (*cp == ' ' || *cp == '\t') {
+ cp++;
+ break;
+ }
+ if (*cp != '\\')
continue;
- cp++;
- if ('\\' == *cp)
+ if (cp[1] == '{' || cp[1] == '}')
+ break;
+ if (*++cp == '\\')
continue;
- mandoc_msg(MANDOCERR_NAMESC, r->parse, ln, pos, NULL);
- *cp = '\0';
- name = cp;
+ mandoc_msg(MANDOCERR_NAMESC, ln, pos,
+ "%.*s", (int)(cp - name + 1), name);
+ mandoc_escape((const char **)&cp, NULL, NULL);
+ break;
}
- /* Nil-terminate name. */
- if ('\0' != *cp)
- *(cp++) = '\0';
-
/* Read past spaces. */
- while (' ' == *cp)
+
+ while (*cp == ' ')
cp++;
*cpp = cp;
- return(name);
+ return namesz;
}
/*
* Store *string into the user-defined string called *name.
- * In multiline mode, append to an existing entry and append '\n';
- * else replace the existing entry, if there is one.
* To clear an existing entry, call with (*r, *name, NULL, 0).
+ * append == 0: replace mode
+ * append == 1: single-line append mode
+ * append == 2: multiline append mode, append '\n' after each call
*/
static void
roff_setstr(struct roff *r, const char *name, const char *string,
- int multiline)
+ int append)
{
+ size_t namesz;
- roff_setstrn(&r->strtab, name, strlen(name), string,
- string ? strlen(string) : 0, multiline);
+ namesz = strlen(name);
+ roff_setstrn(&r->strtab, name, namesz, string,
+ string ? strlen(string) : 0, append);
+ roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
}
static void
roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
- const char *string, size_t stringsz, int multiline)
+ const char *string, size_t stringsz, int append)
{
struct roffkv *n;
char *c;
/* Search for an existing string with the same name. */
n = *r;
- while (n && strcmp(name, n->key.p))
+ while (n && (namesz != n->key.sz ||
+ strncmp(n->key.p, name, namesz)))
n = n->next;
if (NULL == n) {
n->val.sz = 0;
n->next = *r;
*r = n;
- } else if (0 == multiline) {
- /* In multiline mode, append; else replace. */
+ } else if (0 == append) {
free(n->val.p);
n->val.p = NULL;
n->val.sz = 0;
* One additional byte for the '\n' in multiline mode,
* and one for the terminating '\0'.
*/
- newch = stringsz + (multiline ? 2u : 1u);
+ newch = stringsz + (1 < append ? 2u : 1u);
if (NULL == n->val.p) {
n->val.p = mandoc_malloc(newch);
}
/* Append terminating bytes. */
- if (multiline)
+ if (1 < append)
*c++ = '\n';
*c = '\0';
}
static const char *
-roff_getstrn(const struct roff *r, const char *name, size_t len)
+roff_getstrn(struct roff *r, const char *name, size_t len,
+ int *deftype)
{
- const struct roffkv *n;
+ const struct roffkv *n;
+ int found, i;
+ enum roff_tok tok;
+
+ found = 0;
+ for (n = r->strtab; n != NULL; n = n->next) {
+ if (strncmp(name, n->key.p, len) != 0 ||
+ n->key.p[len] != '\0' || n->val.p == NULL)
+ continue;
+ if (*deftype & ROFFDEF_USER) {
+ *deftype = ROFFDEF_USER;
+ return n->val.p;
+ } else {
+ found = 1;
+ break;
+ }
+ }
+ for (n = r->rentab; n != NULL; n = n->next) {
+ if (strncmp(name, n->key.p, len) != 0 ||
+ n->key.p[len] != '\0' || n->val.p == NULL)
+ continue;
+ if (*deftype & ROFFDEF_REN) {
+ *deftype = ROFFDEF_REN;
+ return n->val.p;
+ } else {
+ found = 1;
+ break;
+ }
+ }
+ for (i = 0; i < PREDEFS_MAX; i++) {
+ if (strncmp(name, predefs[i].name, len) != 0 ||
+ predefs[i].name[len] != '\0')
+ continue;
+ if (*deftype & ROFFDEF_PRE) {
+ *deftype = ROFFDEF_PRE;
+ return predefs[i].str;
+ } else {
+ found = 1;
+ break;
+ }
+ }
+ if (r->man->meta.macroset != MACROSET_MAN) {
+ for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
+ if (strncmp(name, roff_name[tok], len) != 0 ||
+ roff_name[tok][len] != '\0')
+ continue;
+ if (*deftype & ROFFDEF_STD) {
+ *deftype = ROFFDEF_STD;
+ return NULL;
+ } else {
+ found = 1;
+ break;
+ }
+ }
+ }
+ if (r->man->meta.macroset != MACROSET_MDOC) {
+ for (tok = MAN_TH; tok < MAN_MAX; tok++) {
+ if (strncmp(name, roff_name[tok], len) != 0 ||
+ roff_name[tok][len] != '\0')
+ continue;
+ if (*deftype & ROFFDEF_STD) {
+ *deftype = ROFFDEF_STD;
+ return NULL;
+ } else {
+ found = 1;
+ break;
+ }
+ }
+ }
+
+ if (found == 0 && *deftype != ROFFDEF_ANY) {
+ if (*deftype & ROFFDEF_REN) {
+ /*
+ * This might still be a request,
+ * so do not treat it as undefined yet.
+ */
+ *deftype = ROFFDEF_UNDEF;
+ return NULL;
+ }
+
+ /* Using an undefined string defines it to be empty. */
- for (n = r->strtab; n; n = n->next)
- if (0 == strncmp(name, n->key.p, len) &&
- '\0' == n->key.p[(int)len])
- return(n->val.p);
+ roff_setstrn(&r->strtab, name, len, "", 0, 0);
+ roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
+ }
- return(NULL);
+ *deftype = 0;
+ return NULL;
}
static void
}
}
-const struct tbl_span *
-roff_span(const struct roff *r)
-{
-
- return(r->tbl ? tbl_span(r->tbl) : NULL);
-}
-
-const struct eqn *
-roff_eqn(const struct roff *r)
-{
-
- return(r->last_eqn ? &r->last_eqn->eqn : NULL);
-}
+/* --- accessors and utility functions ------------------------------------ */
/*
* Duplicate an input string, making the appropriate character
enum mandoc_esc esc;
if (NULL == r->xmbtab && NULL == r->xtab)
- return(mandoc_strdup(p));
+ return mandoc_strdup(p);
else if ('\0' == *p)
- return(mandoc_strdup(""));
+ return mandoc_strdup("");
/*
* Step through each character looking for term matches
ssz = 0;
while ('\0' != *p) {
- if ('\\' != *p && r->xtab && r->xtab[(int)*p].p) {
+ assert((unsigned int)*p < 128);
+ if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
sz = r->xtab[(int)*p].sz;
res = mandoc_realloc(res, ssz + sz + 1);
memcpy(res + ssz, r->xtab[(int)*p].p, sz);
* Append the match to the array and move
* forward by its keysize.
*/
- res = mandoc_realloc
- (res, ssz + cp->val.sz + 1);
+ res = mandoc_realloc(res,
+ ssz + cp->val.sz + 1);
memcpy(res + ssz, cp->val.p, cp->val.sz);
ssz += cp->val.sz;
p += (int)cp->key.sz;
memcpy(res + ssz, pp, sz);
break;
}
- /*
- * We bail out on bad escapes.
+ /*
+ * We bail out on bad escapes.
* No need to warn: we already did so when
- * roff_res() was called.
+ * roff_expand() was called.
*/
sz = (int)(p - pp);
res = mandoc_realloc(res, ssz + sz + 1);
}
res[(int)ssz] = '\0';
- return(res);
+ return res;
+}
+
+int
+roff_getformat(const struct roff *r)
+{
+
+ return r->format;
}
/*
- * Find out whether a line is a macro line or not.
+ * Find out whether a line is a macro line or not.
* If it is, adjust the current position and return one; if it isn't,
* return zero and don't change the current position.
* If the control character has been set with `.cc', then let that grain
pos = *ppos;
- if (0 != r->control && cp[pos] == r->control)
+ if (r->control != '\0' && cp[pos] == r->control)
pos++;
- else if (0 != r->control)
- return(0);
+ else if (r->control != '\0')
+ return 0;
else if ('\\' == cp[pos] && '.' == cp[pos + 1])
pos += 2;
else if ('.' == cp[pos] || '\'' == cp[pos])
pos++;
else
- return(0);
+ return 0;
while (' ' == cp[pos] || '\t' == cp[pos])
pos++;
*ppos = pos;
- return(1);
+ return 1;
}