-/* $Id: roff.c,v 1.197 2014/03/07 18:37:37 schwarze Exp $ */
+/* $Id: roff.c,v 1.293 2017/03/09 15:29:35 schwarze Exp $ */
/*
- * Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2010-2014 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2010-2015, 2017 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mandoc.h"
-#include "libroff.h"
+#include "mandoc_aux.h"
+#include "roff.h"
#include "libmandoc.h"
-
-/* Maximum number of nested if-else conditionals. */
-#define RSTACK_MAX 128
+#include "roff_int.h"
+#include "libroff.h"
/* Maximum number of string expansions per line, to break infinite loops. */
#define EXPAND_LIMIT 1000
+/* --- data types --------------------------------------------------------- */
+
enum rofft {
+ ROFF_ab,
ROFF_ad,
+ ROFF_af,
+ ROFF_aln,
+ ROFF_als,
ROFF_am,
- ROFF_ami,
ROFF_am1,
+ ROFF_ami,
+ ROFF_ami1,
ROFF_as,
+ ROFF_as1,
+ ROFF_asciify,
+ ROFF_backtrace,
+ ROFF_bd,
+ ROFF_bleedat,
+ ROFF_blm,
+ ROFF_box,
+ ROFF_boxa,
+ ROFF_bp,
+ ROFF_BP,
+ /* MAN_br, MDOC_br */
+ ROFF_break,
+ ROFF_breakchar,
+ ROFF_brnl,
+ ROFF_brp,
+ ROFF_brpnl,
+ ROFF_c2,
ROFF_cc,
ROFF_ce,
+ ROFF_cf,
+ ROFF_cflags,
+ ROFF_ch,
+ ROFF_char,
+ ROFF_chop,
+ ROFF_class,
+ ROFF_close,
+ ROFF_CL,
+ ROFF_color,
+ ROFF_composite,
+ ROFF_continue,
+ ROFF_cp,
+ ROFF_cropat,
+ ROFF_cs,
+ ROFF_cu,
+ ROFF_da,
+ ROFF_dch,
+ ROFF_Dd,
ROFF_de,
- ROFF_dei,
ROFF_de1,
+ ROFF_defcolor,
+ ROFF_dei,
+ ROFF_dei1,
+ ROFF_device,
+ ROFF_devicem,
+ ROFF_di,
+ ROFF_do,
ROFF_ds,
+ ROFF_ds1,
+ ROFF_dwh,
+ ROFF_dt,
+ ROFF_ec,
+ ROFF_ecr,
+ ROFF_ecs,
ROFF_el,
+ ROFF_em,
+ ROFF_EN,
+ ROFF_eo,
+ ROFF_EP,
+ ROFF_EQ,
+ ROFF_errprint,
+ ROFF_ev,
+ ROFF_evc,
+ ROFF_ex,
+ ROFF_fallback,
ROFF_fam,
+ ROFF_fc,
+ ROFF_fchar,
+ ROFF_fcolor,
+ ROFF_fdeferlig,
+ ROFF_feature,
+ /* MAN_fi; ignored in mdoc(7) */
+ ROFF_fkern,
+ ROFF_fl,
+ ROFF_flig,
+ ROFF_fp,
+ ROFF_fps,
+ ROFF_fschar,
+ ROFF_fspacewidth,
+ ROFF_fspecial,
+ /* MAN_ft; ignored in mdoc(7) */
+ ROFF_ftr,
+ ROFF_fzoom,
+ ROFF_gcolor,
+ ROFF_hc,
+ ROFF_hcode,
+ ROFF_hidechar,
+ ROFF_hla,
+ ROFF_hlm,
+ ROFF_hpf,
+ ROFF_hpfa,
+ ROFF_hpfcode,
ROFF_hw,
ROFF_hy,
+ ROFF_hylang,
+ ROFF_hylen,
+ ROFF_hym,
+ ROFF_hypp,
+ ROFF_hys,
ROFF_ie,
ROFF_if,
ROFF_ig,
+ /* MAN_in; ignored in mdoc(7) */
+ ROFF_index,
ROFF_it,
+ ROFF_itc,
+ ROFF_IX,
+ ROFF_kern,
+ ROFF_kernafter,
+ ROFF_kernbefore,
+ ROFF_kernpair,
+ ROFF_lc,
+ ROFF_lc_ctype,
+ ROFF_lds,
+ ROFF_length,
+ ROFF_letadj,
+ ROFF_lf,
+ ROFF_lg,
+ ROFF_lhang,
+ ROFF_linetabs,
+ /* MAN_ll, MDOC_ll */
+ ROFF_lnr,
+ ROFF_lnrf,
+ ROFF_lpfx,
+ ROFF_ls,
+ ROFF_lsm,
+ ROFF_lt,
+ ROFF_mc,
+ ROFF_mediasize,
+ ROFF_minss,
+ ROFF_mk,
+ ROFF_mso,
+ ROFF_na,
ROFF_ne,
+ /* MAN_nf; ignored in mdoc(7) */
ROFF_nh,
+ ROFF_nhychar,
+ ROFF_nm,
+ ROFF_nn,
+ ROFF_nop,
ROFF_nr,
+ ROFF_nrf,
+ ROFF_nroff,
ROFF_ns,
+ ROFF_nx,
+ ROFF_open,
+ ROFF_opena,
+ ROFF_os,
+ ROFF_output,
+ ROFF_padj,
+ ROFF_papersize,
+ ROFF_pc,
+ ROFF_pev,
+ ROFF_pi,
+ ROFF_PI,
+ ROFF_pl,
+ ROFF_pm,
+ ROFF_pn,
+ ROFF_pnr,
+ ROFF_po,
ROFF_ps,
+ ROFF_psbb,
+ ROFF_pshape,
+ ROFF_pso,
+ ROFF_ptr,
+ ROFF_pvs,
+ ROFF_rchar,
+ ROFF_rd,
+ ROFF_recursionlimit,
+ ROFF_return,
+ ROFF_rfschar,
+ ROFF_rhang,
+ ROFF_rj,
ROFF_rm,
+ ROFF_rn,
+ ROFF_rnn,
+ ROFF_rr,
+ ROFF_rs,
+ ROFF_rt,
+ ROFF_schar,
+ ROFF_sentchar,
+ ROFF_shc,
+ ROFF_shift,
+ ROFF_sizes,
ROFF_so,
+ /* MAN_sp, MDOC_sp */
+ ROFF_spacewidth,
+ ROFF_special,
+ ROFF_spreadwarn,
+ ROFF_ss,
+ ROFF_sty,
+ ROFF_substring,
+ ROFF_sv,
+ ROFF_sy,
+ ROFF_T_,
ROFF_ta,
- ROFF_tr,
- ROFF_Dd,
+ ROFF_tc,
+ ROFF_TE,
ROFF_TH,
+ ROFF_ti,
+ ROFF_tkf,
+ ROFF_tl,
+ ROFF_tm,
+ ROFF_tm1,
+ ROFF_tmc,
+ ROFF_tr,
+ ROFF_track,
+ ROFF_transchar,
+ ROFF_trf,
+ ROFF_trimat,
+ ROFF_trin,
+ ROFF_trnt,
+ ROFF_troff,
ROFF_TS,
- ROFF_TE,
- ROFF_T_,
- ROFF_EQ,
- ROFF_EN,
+ ROFF_uf,
+ ROFF_ul,
+ ROFF_unformat,
+ ROFF_unwatch,
+ ROFF_unwatchn,
+ ROFF_vpt,
+ ROFF_vs,
+ ROFF_warn,
+ ROFF_warnscale,
+ ROFF_watch,
+ ROFF_watchlength,
+ ROFF_watchn,
+ ROFF_wh,
+ ROFF_while,
+ ROFF_write,
+ ROFF_writec,
+ ROFF_writem,
+ ROFF_xflag,
ROFF_cblock,
ROFF_USERDEF,
ROFF_MAX
};
-enum roffrule {
- ROFFRULE_DENY,
- ROFFRULE_ALLOW
-};
-
/*
* An incredibly-simple string buffer.
*/
};
struct roff {
- enum mparset parsetype; /* requested parse type */
struct mparse *parse; /* parse point */
- int quick; /* skip standard macro deletion */
struct roffnode *last; /* leaf of stack */
- enum roffrule rstack[RSTACK_MAX]; /* stack of !`ie' rules */
- char control; /* control character */
- int rstackpos; /* position in rstack */
+ int *rstack; /* stack of inverted `ie' values */
struct roffreg *regtab; /* number registers */
struct roffkv *strtab; /* user-defined strings & macros */
struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
struct eqn_node *last_eqn; /* last equation parsed */
struct eqn_node *first_eqn; /* first equation parsed */
struct eqn_node *eqn; /* current equation being parsed */
+ int eqn_inline; /* current equation is inline */
+ int options; /* parse options */
+ int rstacksz; /* current size limit of rstack */
+ int rstackpos; /* position in rstack */
+ int format; /* current file in mdoc or man format */
+ int argc; /* number of args of the last macro */
+ char control; /* control character */
};
struct roffnode {
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 */
+ int rule; /* current evaluation rule */
};
#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 */ \
+ struct buf *buf, /* input buffer */ \
int ln, /* parse line */ \
int ppos, /* original pos in buffer */ \
int pos, /* current pos in buffer */ \
#define PREDEF(__name, __str) \
{ (__name), (__str) },
+/* --- function prototypes ------------------------------------------------ */
+
static enum rofft roffhash_find(const char *, size_t);
static void roffhash_init(void);
static void roffnode_cleanscope(struct roff *);
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_brp(ROFF_ARGS);
static enum rofferr roff_cblock(ROFF_ARGS);
static enum rofferr roff_cc(ROFF_ARGS);
static void roff_ccond(struct roff *, int, int);
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 enum rofferr 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 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_getnum(const char *, int *, int *);
+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(const struct roff *,
const char *, size_t);
-static int roff_getregro(const char *name);
-static const char *roff_getstrn(const struct roff *,
+static int roff_getregro(const struct roff *,
+ const char *name);
+static const char *roff_getstrn(const struct roff *,
+ const char *, size_t);
+static int roff_hasregn(const struct roff *,
const char *, size_t);
+static enum rofferr roff_insec(ROFF_ARGS);
static enum rofferr roff_it(ROFF_ARGS);
static enum rofferr roff_line_ignore(ROFF_ARGS);
+static void roff_man_alloc1(struct roff_man *);
+static void roff_man_free1(struct roff_man *);
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 rofft roff_parse(struct roff *, char *, int *,
+ int, int);
+static enum rofferr roff_parsetext(struct buf *, int, int *);
+static enum rofferr roff_res(struct roff *, struct buf *, int, int);
static enum rofferr roff_rm(ROFF_ARGS);
+static enum rofferr roff_rr(ROFF_ARGS);
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_EQ(ROFF_ARGS);
static enum rofferr roff_EN(ROFF_ARGS);
static enum rofferr roff_T_(ROFF_ARGS);
+static enum rofferr roff_unsupp(ROFF_ARGS);
static enum rofferr roff_userdef(ROFF_ARGS);
+/* --- constant data ------------------------------------------------------ */
+
/* See roffhash_find() */
#define ASCII_HI 126
#define ASCII_LO 33
#define HASHWIDTH (ASCII_HI - ASCII_LO + 1)
+#define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
+#define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
+
static struct roffmac *hash[HASHWIDTH];
static struct roffmac roffs[ROFF_MAX] = {
+ { "ab", roff_unsupp, NULL, NULL, 0, NULL },
{ "ad", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "af", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "aln", roff_unsupp, NULL, NULL, 0, NULL },
+ { "als", roff_unsupp, 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 },
+ { "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
+ { "ami1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
{ "as", roff_ds, NULL, NULL, 0, NULL },
+ { "as1", roff_ds, NULL, NULL, 0, NULL },
+ { "asciify", roff_unsupp, NULL, NULL, 0, NULL },
+ { "backtrace", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "bd", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "bleedat", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "blm", roff_unsupp, NULL, NULL, 0, NULL },
+ { "box", roff_unsupp, NULL, NULL, 0, NULL },
+ { "boxa", roff_unsupp, NULL, NULL, 0, NULL },
+ { "bp", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "BP", roff_unsupp, NULL, NULL, 0, NULL },
+ { "break", roff_unsupp, NULL, NULL, 0, NULL },
+ { "breakchar", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "brnl", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "brp", roff_brp, NULL, NULL, 0, NULL },
+ { "brpnl", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "c2", roff_unsupp, NULL, NULL, 0, NULL },
{ "cc", roff_cc, NULL, NULL, 0, NULL },
{ "ce", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "cf", roff_insec, NULL, NULL, 0, NULL },
+ { "cflags", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "ch", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "char", roff_unsupp, NULL, NULL, 0, NULL },
+ { "chop", roff_unsupp, NULL, NULL, 0, NULL },
+ { "class", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "close", roff_insec, NULL, NULL, 0, NULL },
+ { "CL", roff_unsupp, NULL, NULL, 0, NULL },
+ { "color", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "composite", roff_unsupp, NULL, NULL, 0, NULL },
+ { "continue", roff_unsupp, NULL, NULL, 0, NULL },
+ { "cp", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "cropat", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "cs", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "cu", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "da", roff_unsupp, NULL, NULL, 0, NULL },
+ { "dch", roff_unsupp, NULL, NULL, 0, NULL },
+ { "Dd", roff_Dd, 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 },
+ { "defcolor", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
+ { "dei1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
+ { "device", roff_unsupp, NULL, NULL, 0, NULL },
+ { "devicem", roff_unsupp, NULL, NULL, 0, NULL },
+ { "di", roff_unsupp, NULL, NULL, 0, NULL },
+ { "do", roff_unsupp, NULL, NULL, 0, NULL },
{ "ds", roff_ds, NULL, NULL, 0, NULL },
+ { "ds1", roff_ds, NULL, NULL, 0, NULL },
+ { "dwh", roff_unsupp, NULL, NULL, 0, NULL },
+ { "dt", roff_unsupp, NULL, NULL, 0, NULL },
+ { "ec", roff_unsupp, NULL, NULL, 0, NULL },
+ { "ecr", roff_unsupp, NULL, NULL, 0, NULL },
+ { "ecs", roff_unsupp, NULL, NULL, 0, NULL },
{ "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
+ { "em", roff_unsupp, NULL, NULL, 0, NULL },
+ { "EN", roff_EN, NULL, NULL, 0, NULL },
+ { "eo", roff_unsupp, NULL, NULL, 0, NULL },
+ { "EP", roff_unsupp, NULL, NULL, 0, NULL },
+ { "EQ", roff_EQ, NULL, NULL, 0, NULL },
+ { "errprint", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "ev", roff_unsupp, NULL, NULL, 0, NULL },
+ { "evc", roff_unsupp, NULL, NULL, 0, NULL },
+ { "ex", roff_unsupp, NULL, NULL, 0, NULL },
+ { "fallback", roff_line_ignore, NULL, NULL, 0, NULL },
{ "fam", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "fc", roff_unsupp, NULL, NULL, 0, NULL },
+ { "fchar", roff_unsupp, NULL, NULL, 0, NULL },
+ { "fcolor", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "fdeferlig", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "feature", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "fkern", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "fl", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "flig", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "fp", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "fps", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "fschar", roff_unsupp, NULL, NULL, 0, NULL },
+ { "fspacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "fspecial", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "ftr", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "fzoom", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "gcolor", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "hc", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "hcode", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "hidechar", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "hla", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "hlm", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "hpf", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "hpfa", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "hpfcode", roff_line_ignore, NULL, NULL, 0, NULL },
{ "hw", roff_line_ignore, NULL, NULL, 0, NULL },
{ "hy", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "hylang", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "hylen", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "hym", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "hypp", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "hys", 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 },
+ { "index", roff_unsupp, NULL, NULL, 0, NULL },
{ "it", roff_it, NULL, NULL, 0, NULL },
+ { "itc", roff_unsupp, NULL, NULL, 0, NULL },
+ { "IX", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "kern", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "kernafter", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "kernbefore", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "kernpair", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "lc", roff_unsupp, NULL, NULL, 0, NULL },
+ { "lc_ctype", roff_unsupp, NULL, NULL, 0, NULL },
+ { "lds", roff_unsupp, NULL, NULL, 0, NULL },
+ { "length", roff_unsupp, NULL, NULL, 0, NULL },
+ { "letadj", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "lf", roff_insec, NULL, NULL, 0, NULL },
+ { "lg", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "lhang", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "linetabs", roff_unsupp, NULL, NULL, 0, NULL },
+ { "lnr", roff_unsupp, NULL, NULL, 0, NULL },
+ { "lnrf", roff_unsupp, NULL, NULL, 0, NULL },
+ { "lpfx", roff_unsupp, NULL, NULL, 0, NULL },
+ { "ls", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "lsm", roff_unsupp, NULL, NULL, 0, NULL },
+ { "lt", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "mc", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "mediasize", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "minss", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "mk", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "mso", roff_insec, NULL, NULL, 0, NULL },
+ { "na", roff_line_ignore, NULL, NULL, 0, NULL },
{ "ne", roff_line_ignore, NULL, NULL, 0, NULL },
{ "nh", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "nm", roff_unsupp, NULL, NULL, 0, NULL },
+ { "nn", roff_unsupp, NULL, NULL, 0, NULL },
+ { "nop", roff_unsupp, NULL, NULL, 0, NULL },
{ "nr", roff_nr, NULL, NULL, 0, NULL },
+ { "nrf", roff_unsupp, NULL, NULL, 0, NULL },
+ { "nroff", roff_line_ignore, NULL, NULL, 0, NULL },
{ "ns", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "nx", roff_insec, NULL, NULL, 0, NULL },
+ { "open", roff_insec, NULL, NULL, 0, NULL },
+ { "opena", roff_insec, NULL, NULL, 0, NULL },
+ { "os", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "output", roff_unsupp, NULL, NULL, 0, NULL },
+ { "padj", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "papersize", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "pc", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "pev", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "pi", roff_insec, NULL, NULL, 0, NULL },
+ { "PI", roff_unsupp, NULL, NULL, 0, NULL },
+ { "pl", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "pm", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "pn", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "pnr", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "po", roff_line_ignore, NULL, NULL, 0, NULL },
{ "ps", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "psbb", roff_unsupp, NULL, NULL, 0, NULL },
+ { "pshape", roff_unsupp, NULL, NULL, 0, NULL },
+ { "pso", roff_insec, NULL, NULL, 0, NULL },
+ { "ptr", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "pvs", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "rchar", roff_unsupp, NULL, NULL, 0, NULL },
+ { "rd", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "recursionlimit", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "return", roff_unsupp, NULL, NULL, 0, NULL },
+ { "rfschar", roff_unsupp, NULL, NULL, 0, NULL },
+ { "rhang", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "rj", roff_line_ignore, NULL, NULL, 0, NULL },
{ "rm", roff_rm, NULL, NULL, 0, NULL },
+ { "rn", roff_unsupp, NULL, NULL, 0, NULL },
+ { "rnn", roff_unsupp, NULL, NULL, 0, NULL },
+ { "rr", roff_rr, NULL, NULL, 0, NULL },
+ { "rs", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "rt", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "schar", roff_unsupp, NULL, NULL, 0, NULL },
+ { "sentchar", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "shc", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "shift", roff_unsupp, NULL, NULL, 0, NULL },
+ { "sizes", roff_line_ignore, 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 },
+ { "spacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "special", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "spreadwarn", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "ss", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "sty", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "substring", roff_unsupp, NULL, NULL, 0, NULL },
+ { "sv", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "sy", roff_insec, NULL, NULL, 0, NULL },
+ { "T&", roff_T_, NULL, NULL, 0, NULL },
+ { "ta", roff_unsupp, NULL, NULL, 0, NULL },
+ { "tc", roff_unsupp, NULL, NULL, 0, NULL },
+ { "TE", roff_TE, NULL, NULL, 0, NULL },
{ "TH", roff_TH, NULL, NULL, 0, NULL },
+ { "ti", roff_unsupp, NULL, NULL, 0, NULL },
+ { "tkf", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "tl", roff_unsupp, NULL, NULL, 0, NULL },
+ { "tm", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "tm1", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "tmc", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "tr", roff_tr, NULL, NULL, 0, NULL },
+ { "track", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "transchar", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "trf", roff_insec, NULL, NULL, 0, NULL },
+ { "trimat", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "trin", roff_unsupp, NULL, NULL, 0, NULL },
+ { "trnt", roff_unsupp, NULL, NULL, 0, NULL },
+ { "troff", roff_line_ignore, 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 },
+ { "uf", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "ul", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "unformat", roff_unsupp, NULL, NULL, 0, NULL },
+ { "unwatch", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "unwatchn", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "vpt", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "vs", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "warn", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "warnscale", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "watch", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "watchlength", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "watchn", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "wh", roff_unsupp, NULL, NULL, 0, NULL },
+ { "while", roff_unsupp, NULL, NULL, 0, NULL },
+ { "write", roff_insec, NULL, NULL, 0, NULL },
+ { "writec", roff_insec, NULL, NULL, 0, NULL },
+ { "writem", roff_insec, NULL, NULL, 0, NULL },
+ { "xflag", roff_line_ignore, NULL, NULL, 0, NULL },
{ ".", roff_cblock, NULL, NULL, 0, NULL },
{ NULL, roff_userdef, NULL, NULL, 0, NULL },
};
+/* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
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",
+ "Dt", "Dv", "Dx", "D1",
+ "Ec", "Ed", "Ef", "Ek", "El", "Em",
+ "En", "Eo", "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",
+ "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
+ "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",
+ "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
+ "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
+ "Sc", "Sh", "Sm", "So", "Sq",
"Ss", "St", "Sx", "Sy",
"Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
- "%A", "%B", "%D", "%I", "%J", "%N", "%O",
+ "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
"%P", "%Q", "%R", "%T", "%U", "%V",
NULL
};
+/* not currently implemented: BT DE DS ME MT PT SY TQ YS */
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",
+ "AT", "B", "BI", "BR", "DT",
+ "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
+ "LP", "OP", "P", "PD", "PP",
+ "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
+ "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
NULL
};
static int roffit_lines; /* number of lines to delay */
static char *roffit_macro; /* nil-terminated macro line */
+
+/* --- request table ------------------------------------------------------ */
+
static void
roffhash_init(void)
{
*/
if (p[0] < ASCII_LO || p[0] > ASCII_HI)
- return(ROFF_MAX);
+ return ROFF_MAX;
buc = ROFF_HASH(p);
if (NULL == (n = hash[buc]))
- return(ROFF_MAX);
+ 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));
+ return (enum rofft)(n - roffs);
- return(ROFF_MAX);
+ return ROFF_MAX;
}
+/* --- stack of request blocks -------------------------------------------- */
/*
* Pop the current node off of the stack of roff instructions currently
struct roffnode *p;
assert(r->last);
- p = r->last;
+ p = r->last;
r->last = r->last->parent;
free(p->name);
free(p);
}
-
/*
* Push a roff node onto the instruction stack. This must later be
* removed with roffnode_pop().
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)
r->first_tbl = tbl->next;
tbl_free(tbl);
}
-
r->first_tbl = r->last_tbl = r->tbl = NULL;
while (NULL != (e = r->first_eqn)) {
r->first_eqn = e->next;
eqn_free(e);
}
-
r->first_eqn = r->last_eqn = r->eqn = NULL;
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->xmbtab);
+ r->strtab = r->xmbtab = NULL;
+
if (r->xtab)
for (i = 0; i < 128; i++)
free(r->xtab[i].p);
-
free(r->xtab);
r->xtab = NULL;
}
{
roff_free1(r);
+ r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
r->control = 0;
}
-
void
roff_free(struct roff *r)
{
free(r);
}
-
struct roff *
-roff_alloc(enum mparset type, struct mparse *parse, int quick)
+roff_alloc(struct mparse *parse, int options)
{
struct roff *r;
r = mandoc_calloc(1, sizeof(struct roff));
- r->parsetype = type;
r->parse = parse;
- r->quick = quick;
+ r->options = options;
+ r->format = options & (MPARSE_MDOC | MPARSE_MAN);
r->rstackpos = -1;
-
+
roffhash_init();
- return(r);
+ return r;
+}
+
+/* --- syntax tree state data management ---------------------------------- */
+
+static void
+roff_man_free1(struct roff_man *man)
+{
+
+ if (man->first != NULL)
+ roff_node_delete(man, man->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);
+}
+
+static void
+roff_man_alloc1(struct roff_man *man)
+{
+
+ memset(&man->meta, 0, sizeof(man->meta));
+ man->first = mandoc_calloc(1, sizeof(*man->first));
+ man->first->type = ROFFT_ROOT;
+ man->last = man->first;
+ man->last_es = NULL;
+ man->flags = 0;
+ man->macroset = MACROSET_NONE;
+ man->lastsec = man->lastnamed = SEC_NONE;
+ man->next = ROFF_NEXT_CHILD;
+}
+
+void
+roff_man_reset(struct roff_man *man)
+{
+
+ roff_man_free1(man);
+ roff_man_alloc1(man);
+}
+
+void
+roff_man_free(struct roff_man *man)
+{
+
+ roff_man_free1(man);
+ free(man);
+}
+
+struct roff_man *
+roff_man_alloc(struct roff *roff, struct mparse *parse,
+ const char *defos, int quick)
+{
+ struct roff_man *man;
+
+ man = mandoc_calloc(1, sizeof(*man));
+ man->parse = parse;
+ man->roff = roff;
+ man->defos = defos;
+ man->quick = quick;
+ roff_man_alloc1(man);
+ return man;
+}
+
+/* --- syntax tree handling ----------------------------------------------- */
+
+struct roff_node *
+roff_node_alloc(struct roff_man *man, int line, int pos,
+ enum roff_type type, int tok)
+{
+ struct roff_node *n;
+
+ n = mandoc_calloc(1, sizeof(*n));
+ n->line = line;
+ n->pos = pos;
+ n->tok = tok;
+ n->type = type;
+ n->sec = man->lastsec;
+
+ if (man->flags & MDOC_SYNOPSIS)
+ n->flags |= NODE_SYNPRETTY;
+ else
+ n->flags &= ~NODE_SYNPRETTY;
+ if (man->flags & MDOC_NEWLINE)
+ n->flags |= NODE_LINE;
+ man->flags &= ~MDOC_NEWLINE;
+
+ return n;
+}
+
+void
+roff_node_append(struct roff_man *man, struct roff_node *n)
+{
+
+ 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;
+
+ 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;
+ }
+
+ /*
+ * Copy over the normalised-data pointer of our parent. Not
+ * everybody has one, but copying a null pointer is fine.
+ */
+
+ n->norm = n->parent->norm;
+ assert(n->parent->type == ROFFT_BLOCK);
+}
+
+void
+roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
+{
+ struct roff_node *n;
+
+ 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;
+}
+
+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;
+}
+
+void
+roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
+{
+ struct roff_node *n;
+
+ n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
+ roff_node_append(man, n);
+ man->next = ROFF_NEXT_CHILD;
+}
+
+struct roff_node *
+roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
+{
+ struct roff_node *n;
+
+ n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
+ roff_node_append(man, n);
+ man->next = ROFF_NEXT_CHILD;
+ return n;
+}
+
+struct roff_node *
+roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
+{
+ struct roff_node *n;
+
+ n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
+ roff_node_append(man, n);
+ man->next = ROFF_NEXT_CHILD;
+ return n;
+}
+
+struct roff_node *
+roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
+{
+ struct roff_node *n;
+
+ n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
+ roff_node_append(man, n);
+ man->next = ROFF_NEXT_CHILD;
+ return n;
+}
+
+void
+roff_addeqn(struct roff_man *man, const struct eqn *eqn)
+{
+ struct roff_node *n;
+
+ n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
+ n->eqn = eqn;
+ if (eqn->ln > man->last->line)
+ n->flags |= NODE_LINE;
+ roff_node_append(man, n);
+ man->next = ROFF_NEXT_SIBLING;
+}
+
+void
+roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
+{
+ struct roff_node *n;
+
+ if (man->macroset == MACROSET_MAN)
+ man_breakscope(man, TOKEN_NONE);
+ n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
+ n->span = tbl;
+ roff_node_append(man, n);
+ n->flags |= NODE_VALID | NODE_ENDED;
+ man->next = ROFF_NEXT_SIBLING;
}
+void
+roff_node_unlink(struct roff_man *man, struct roff_node *n)
+{
+
+ /* Adjust siblings. */
+
+ if (n->prev)
+ n->prev->next = n->next;
+ if (n->next)
+ n->next->prev = n->prev;
+
+ /* Adjust parent. */
+
+ if (n->parent != NULL) {
+ if (n->parent->child == n)
+ n->parent->child = n->next;
+ if (n->parent->last == n)
+ n->parent->last = n->prev;
+ }
+
+ /* Adjust parse point. */
+
+ 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;
+ }
+ }
+ if (man->first == n)
+ man->first = NULL;
+}
+
+void
+roff_node_free(struct roff_node *n)
+{
+
+ if (n->args != NULL)
+ mdoc_argv_free(n->args);
+ if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
+ free(n->norm);
+ free(n->string);
+ free(n);
+}
+
+void
+roff_node_delete(struct roff_man *man, struct roff_node *n)
+{
+
+ while (n->child != NULL)
+ roff_node_delete(man, n->child);
+ roff_node_unlink(man, n);
+ roff_node_free(n);
+}
+
+void
+deroff(char **dest, const struct roff_node *n)
+{
+ char *cp;
+ size_t sz;
+
+ if (n->type != ROFFT_TEXT) {
+ for (n = n->child; n != NULL; n = n->next)
+ deroff(dest, n);
+ return;
+ }
+
+ /* Skip leading whitespace. */
+
+ 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;
+ }
+
+ /* Skip trailing backslash. */
+
+ sz = strlen(cp);
+ if (sz > 0 && cp[sz - 1] == '\\')
+ sz--;
+
+ /* Skip trailing whitespace. */
+
+ for (; sz; sz--)
+ if ( ! isspace((unsigned char)cp[sz-1]))
+ break;
+
+ /* Skip empty strings. */
+
+ if (sz == 0)
+ return;
+
+ if (*dest == NULL) {
+ *dest = mandoc_strndup(cp, sz);
+ return;
+ }
+
+ mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
+ free(*dest);
+ *dest = cp;
+}
+
+/* --- main functions of the roff parser ---------------------------------- */
+
/*
- * In the current line, expand user-defined strings ("\*")
- * and references to number registers ("\n").
- * Also check the syntax of other escape sequences.
+ * In the current line, expand escape sequences that tend to get
+ * used in numerical expressions and conditional requests.
+ * Also check the syntax of the remaining escape sequences.
*/
static enum rofferr
-roff_res(struct roff *r, char **bufp, size_t *szp, int ln, int pos)
+roff_res(struct roff *r, struct buf *buf, int ln, int pos)
{
- char ubuf[12]; /* buffer to print the number */
- const char *stesc; /* start of an escape sequence ('\\') */
+ char ubuf[24]; /* buffer to print the number */
+ const char *start; /* start of the string to process */
+ 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 */
+ 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 */
+ enum mandoc_esc esc; /* type of the escape sequence */
+ 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 */
+ char term; /* character terminating the escape */
expand_count = 0;
+ start = buf->buf + pos;
+ stesc = strchr(start, '\0') - 1;
+ while (stesc-- > start) {
-again:
- cp = *bufp + pos;
- while (NULL != (cp = strchr(cp, '\\'))) {
- stesc = cp++;
+ /* Search backwards for the next backslash. */
- /*
- * 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.
- */
+ if (*stesc != '\\')
+ continue;
+
+ /* If it is escaped, skip it. */
+
+ for (cp = stesc - 1; cp >= start; cp--)
+ if (*cp != '\\')
+ break;
+
+ if ((stesc - cp) % 2 == 0) {
+ stesc = (char *)cp;
+ continue;
+ }
- if ('\0' == *cp)
- return(ROFF_CONT);
+ /* Decide whether to expand or to check only. */
+ term = '\0';
+ cp = stesc + 1;
switch (*cp) {
- case ('*'):
+ case '*':
res = NULL;
break;
- case ('n'):
+ case 'B':
+ case 'w':
+ term = cp[1];
+ /* FALLTHROUGH */
+ 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);
+ esc = mandoc_escape(&cp, &stnam, &inaml);
+ if (esc == ESCAPE_ERROR ||
+ (esc == ESCAPE_SPECIAL &&
+ mchars_spec2cp(stnam, inaml) < 0))
+ mandoc_vmsg(MANDOCERR_ESC_BAD,
+ r->parse, ln, (int)(stesc - buf->buf),
+ "%.*s", (int)(cp - stesc), stesc);
+ continue;
}
- cp++;
+ if (EXPAND_LIMIT < ++expand_count) {
+ mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
+ ln, (int)(stesc - buf->buf), NULL);
+ return ROFF_IGN;
+ }
/*
* The third character decides the length
* Save a pointer to the name.
*/
- switch (*cp) {
- case ('\0'):
- return(ROFF_CONT);
- case ('('):
- cp++;
- maxl = 2;
- break;
- case ('['):
- cp++;
+ 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;
- break;
- default:
- maxl = 1;
- break;
}
stnam = cp;
/* Advance to the end of the name. */
- 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);
+ naml = 0;
+ arg_complete = 1;
+ while (maxl == 0 || naml < maxl) {
+ if (*cp == '\0') {
+ mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
+ ln, (int)(stesc - buf->buf), stesc);
+ arg_complete = 0;
+ break;
}
- if (0 == maxl && ']' == *cp)
+ if (maxl == 0 && *cp == term) {
+ cp++;
+ break;
+ }
+ if (*cp++ != '\\' || stesc[1] != 'w') {
+ naml++;
+ continue;
+ }
+ switch (mandoc_escape(&cp, NULL, NULL)) {
+ case ESCAPE_SPECIAL:
+ case ESCAPE_UNICODE:
+ case ESCAPE_NUMBERED:
+ case ESCAPE_OVERSTRIKE:
+ naml++;
+ break;
+ default:
break;
+ }
}
/*
* undefined, resume searching for escapes.
*/
- 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);
+ switch (stesc[1]) {
+ case '*':
+ if (arg_complete)
+ res = roff_getstrn(r, stnam, naml);
+ break;
+ 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));
+ else
+ ubuf[0] = '\0';
+ break;
+ case 'w':
+ /* use even incomplete args */
+ (void)snprintf(ubuf, sizeof(ubuf), "%d",
+ 24 * (int)naml);
+ break;
+ }
+
+ if (res == NULL) {
+ mandoc_vmsg(MANDOCERR_STR_UNDEF,
+ r->parse, ln, (int)(stesc - buf->buf),
+ "%.*s", (int)naml, stnam);
res = "";
+ } else if (buf->sz + strlen(res) > SHRT_MAX) {
+ mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
+ ln, (int)(stesc - buf->buf), NULL);
+ return ROFF_IGN;
}
/* Replace the escape sequence by the string. */
- pos = stesc - *bufp;
-
- nsz = *szp + strlen(res) + 1;
- nbuf = mandoc_malloc(nsz);
-
- strlcpy(nbuf, *bufp, (size_t)(stesc - *bufp + 1));
- strlcat(nbuf, res, nsz);
- strlcat(nbuf, cp + (maxl ? 0 : 1), nsz);
-
- free(*bufp);
-
- *bufp = nbuf;
- *szp = nsz;
+ *stesc = '\0';
+ buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
+ buf->buf, res, cp) + 1;
- if (EXPAND_LIMIT >= ++expand_count)
- goto again;
+ /* Prepare for the next replacement. */
- /* Just leave the string unexpanded. */
- mandoc_msg(MANDOCERR_ROFFLOOP, r->parse, ln, pos, NULL);
- return(ROFF_IGN);
+ start = nbuf + pos;
+ stesc = nbuf + (stesc - buf->buf) + strlen(res);
+ free(buf->buf);
+ buf->buf = nbuf;
}
- return(ROFF_CONT);
+ return ROFF_CONT;
}
/*
- * Process text streams:
- * Convert all breakable hyphens into ASCII_HYPH.
- * Decrement and spring input line trap.
+ * Process text streams.
*/
static enum rofferr
-roff_parsetext(char **bufp, size_t *szp, int pos, int *offs)
+roff_parsetext(struct buf *buf, int pos, int *offs)
{
size_t sz;
const char *start;
int isz;
enum mandoc_esc esc;
- start = p = *bufp + pos;
+ /* Spring the input line trap. */
- while ('\0' != *p) {
+ 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;
+
+ /* Convert all breakable hyphens into ASCII_HYPH. */
+
+ start = p = buf->buf + pos;
+
+ while (*p != '\0') {
sz = strcspn(p, "-\\");
p += sz;
- if ('\0' == *p)
+ if (*p == '\0')
break;
- if ('\\' == *p) {
+ if (*p == '\\') {
/* Skip over escapes. */
p++;
esc = mandoc_escape((const char **)&p, NULL, NULL);
- if (ESCAPE_ERROR == esc)
+ if (esc == ESCAPE_ERROR)
break;
+ while (*p == '-')
+ p++;
continue;
} else if (p == start) {
p++;
*p = ASCII_HYPH;
p++;
}
-
- /* 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);
+ return ROFF_CONT;
}
enum rofferr
-roff_parseln(struct roff *r, int ln, char **bufp,
- size_t *szp, int pos, int *offs)
+roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
{
enum rofft t;
enum rofferr e;
- int ppos, ctl;
+ 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);
+ }
- /*
- * Run the reserved-word filter only if we have some reserved
- * words to fill in.
- */
+ /* Expand some escape sequences. */
- e = roff_res(r, bufp, szp, ln, pos);
- if (ROFF_IGN == e)
- return(e);
- assert(ROFF_CONT == e);
+ e = roff_res(r, buf, ln, pos);
+ if (e == ROFF_IGN)
+ return e;
+ assert(e == ROFF_CONT);
- ppos = pos;
- ctl = roff_getcontrol(r, *bufp, &pos);
+ 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. 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.
+ * 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 && ! ctl) {
+ if (r->last != NULL && ! 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));
+ e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
+ assert(e == ROFF_IGN || e == ROFF_CONT);
+ if (e != ROFF_CONT)
+ return e;
}
+ if (r->eqn != NULL)
+ return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
+ if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
+ return tbl_read(r->tbl, ln, buf->buf, ppos);
+ if ( ! ctl)
+ return roff_parsetext(buf, pos, offs);
+
+ /* Skip empty request lines. */
+
+ if (buf->buf[pos] == '"') {
+ mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
+ 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,
if (r->last) {
t = r->last->tok;
assert(roffs[t].sub);
- return((*roffs[t].sub)
- (r, t, bufp, szp,
- ln, ppos, pos, offs));
+ 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 == ROFF_MAX || t == ROFF_TS)) {
+ mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
+ ln, pos, buf->buf + spos);
+ if (t == ROFF_TS)
+ return ROFF_IGN;
+ while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
+ pos++;
+ while (buf->buf[pos] == ' ')
+ pos++;
+ return tbl_read(r->tbl, ln, buf->buf, pos);
}
/*
- * 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.
+ * This is neither a roff request nor a user-defined macro.
+ * Let the standard macro set parsers handle it.
*/
- if (ROFF_MAX == (t = roff_parse(r, *bufp, &pos)))
- return(ROFF_CONT);
+ if (t == ROFF_MAX)
+ return ROFF_CONT;
+
+ /* Execute a roff request or a user defined macro. */
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);
}
-
void
roff_endparse(struct roff *r)
{
if (r->last)
- mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse,
- r->last->line, r->last->col, NULL);
+ mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
+ r->last->line, r->last->col,
+ roffs[r->last->tok].name);
if (r->eqn) {
- mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse,
- r->eqn->eqn.ln, r->eqn->eqn.pos, NULL);
+ mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
+ r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
eqn_end(&r->eqn);
}
if (r->tbl) {
- mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse,
- r->tbl->line, r->tbl->pos, NULL);
+ mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
+ r->tbl->line, r->tbl->pos, "TS");
tbl_end(&r->tbl);
}
}
* form of ".foo xxx" in the usual way.
*/
static enum rofft
-roff_parse(struct roff *r, const char *buf, int *pos)
+roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
{
+ char *cp;
const char *mac;
size_t maclen;
enum rofft t;
- if ('\0' == buf[*pos] || '"' == buf[*pos] ||
- '\t' == buf[*pos] || ' ' == buf[*pos])
- return(ROFF_MAX);
+ cp = buf + *pos;
- /* We stop the macro parse at an escape, tab, space, or nil. */
+ if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
+ return ROFF_MAX;
- mac = buf + *pos;
- maclen = strcspn(mac, " \\\t\0");
+ mac = cp;
+ maclen = roff_getname(r, &cp, ln, ppos);
t = (r->current_string = roff_getstrn(r, mac, maclen))
? ROFF_USERDEF : roffhash_find(mac, maclen);
- *pos += (int)maclen;
+ if (ROFF_MAX != t)
+ *pos = cp - buf;
- while (buf[*pos] && ' ' == buf[*pos])
- (*pos)++;
-
- return(t);
+ return t;
}
-/* ARGSUSED */
+/* --- handling of request blocks ----------------------------------------- */
+
static enum rofferr
roff_cblock(ROFF_ARGS)
{
* ignore macro, otherwise raise a warning and just ignore it.
*/
- if (NULL == r->last) {
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
+ if (r->last == NULL) {
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
+ ln, ppos, "..");
+ return ROFF_IGN;
}
switch (r->last->tok) {
- case (ROFF_am):
- /* FALLTHROUGH */
- case (ROFF_ami):
- /* FALLTHROUGH */
- case (ROFF_am1):
- /* FALLTHROUGH */
- case (ROFF_de):
+ 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(). */
- /* FALLTHROUGH */
- case (ROFF_dei):
- /* FALLTHROUGH */
- case (ROFF_ig):
+ case ROFF_dei:
+ case ROFF_ig:
break;
default:
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
+ ln, ppos, "..");
+ return ROFF_IGN;
}
- if ((*bufp)[pos])
- mandoc_msg(MANDOCERR_ARGSLOST, r->parse, ln, pos, NULL);
+ if (buf->buf[pos] != '\0')
+ mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
+ ".. %s", buf->buf + pos);
roffnode_pop(r);
roffnode_cleanscope(r);
- return(ROFF_IGN);
+ return ROFF_IGN;
}
-
static void
roffnode_cleanscope(struct roff *r)
{
}
}
-
static void
roff_ccond(struct roff *r, int ln, int ppos)
{
if (NULL == r->last) {
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
+ ln, ppos, "\\}");
return;
}
switch (r->last->tok) {
- case (ROFF_el):
- /* FALLTHROUGH */
- case (ROFF_ie):
- /* FALLTHROUGH */
- case (ROFF_if):
+ case ROFF_el:
+ case ROFF_ie:
+ case ROFF_if:
break;
default:
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
+ ln, ppos, "\\}");
return;
}
if (r->last->endspan > -1) {
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
+ ln, ppos, "\\}");
return;
}
return;
}
-
-/* ARGSUSED */
static enum rofferr
roff_block(ROFF_ARGS)
{
- int sv;
- size_t sz;
- char *name;
-
- name = NULL;
-
- if (ROFF_ig != tok) {
- if ('\0' == (*bufp)[pos]) {
- mandoc_msg(MANDOCERR_NOARGS, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
- }
-
- /*
- * Re-write `de1', since we don't really care about
- * groff's strange compatibility mode, into `de'.
- */
-
- 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);
+ const char *name;
+ char *iname, *cp;
+ size_t namesz;
+
+ /* 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)) {
+ if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
+ mandoc_vmsg(MANDOCERR_STR_UNDEF,
+ r->parse, 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, r->parse,
+ ln, ppos, roffs[tok].name);
+ return ROFF_IGN;
}
roffnode_push(r, tok, name, ln, ppos);
* 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);
- 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)) {
+ if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
+ mandoc_vmsg(MANDOCERR_STR_UNDEF,
+ r->parse, 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_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
+ ln, pos, ".%s ... %s", roffs[tok].name, cp);
- return(ROFF_IGN);
+ return ROFF_IGN;
}
-
-/* ARGSUSED */
static enum rofferr
roff_block_sub(ROFF_ARGS)
{
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) !=
+ ROFF_MAX)
+ 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, 2);
- 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
roff_block_text(ROFF_ARGS)
{
- if (ROFF_de == tok)
- roff_setstr(r, r->last->name, *bufp + pos, 2);
+ if (tok != ROFF_ig)
+ roff_setstr(r, r->last->name, buf->buf + pos, 2);
- return(ROFF_IGN);
+ return ROFF_IGN;
}
-
-/* ARGSUSED */
static enum rofferr
roff_cond_sub(ROFF_ARGS)
{
enum rofft t;
- enum roffrule rr;
char *ep;
+ int rr;
rr = r->last->rule;
roffnode_cleanscope(r);
- t = roff_parse(r, *bufp, &pos);
+ t = roff_parse(r, buf->buf, &pos, ln, ppos);
/*
* Fully handle known macros when they are structurally
* required or when the conditional evaluated to true.
*/
- if ((ROFF_MAX != t) &&
- (ROFFRULE_ALLOW == rr ||
- ROFFMAC_STRUCT & roffs[t].flags)) {
+ if ((t != ROFF_MAX) &&
+ (rr || roffs[t].flags & ROFFMAC_STRUCT)) {
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);
}
/*
* drop the line completely.
*/
- ep = *bufp + pos;
- if ('\\' == ep[0] && '}' == ep[1])
- rr = ROFFRULE_DENY;
+ ep = buf->buf + pos;
+ if (ep[0] == '\\' && ep[1] == '}')
+ rr = 0;
/* Always check for the closing delimiter `\}'. */
- while (NULL != (ep = strchr(ep, '\\'))) {
- if ('}' == *(++ep)) {
+ while ((ep = strchr(ep, '\\')) != NULL) {
+ if (*(++ep) == '}') {
*ep = '&';
- roff_ccond(r, ln, ep - *bufp - 1);
+ roff_ccond(r, ln, ep - buf->buf - 1);
}
- ++ep;
+ if (*ep != '\0')
+ ++ep;
}
- return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT);
+ return rr ? ROFF_CONT : ROFF_IGN;
}
-/* ARGSUSED */
static enum rofferr
roff_cond_text(ROFF_ARGS)
{
char *ep;
- enum roffrule rr;
+ int rr;
rr = r->last->rule;
roffnode_cleanscope(r);
- ep = *bufp + pos;
- while (NULL != (ep = strchr(ep, '\\'))) {
- if ('}' == *(++ep)) {
+ ep = buf->buf + pos;
+ while ((ep = strchr(ep, '\\')) != NULL) {
+ if (*(++ep) == '}') {
*ep = '&';
- roff_ccond(r, ln, ep - *bufp - 1);
+ roff_ccond(r, ln, ep - buf->buf - 1);
}
- ++ep;
+ if (*ep != '\0')
+ ++ep;
}
- return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT);
+ return rr ? ROFF_CONT : ROFF_IGN;
}
+/* --- handling of numeric and conditional expressions -------------------- */
+
+/*
+ * 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)
+roff_getnum(const char *v, int *pos, int *res, int flags)
{
- int p, n;
+ int myres, scaled, n, p;
+
+ if (NULL == res)
+ res = &myres;
p = *pos;
n = v[p] == '-';
- if (n)
+ if (n || v[p] == '+')
p++;
+ 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';
+ *res = 10 * *res + v[p] - '0';
if (p == *pos + n)
return 0;
if (n)
*res = -*res;
- *pos = p;
+ /* 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;
+ }
+ if (flags & ROFFNUM_SCALE)
+ *res = scaled;
+
+ *pos = p + 1;
return 1;
}
+/*
+ * 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_getop(const char *v, int *pos, char *res)
+roff_evalstrcond(const char *v, int *pos)
{
- int e;
+ const char *s1, *s2, *s3;
+ int match;
- *res = v[*pos];
- e = v[*pos + 1] == '=';
+ match = 0;
+ s1 = v + *pos; /* initial delimiter */
+ s2 = s1 + 1; /* for scanning the first string */
+ s3 = strchr(s2, *s1); /* for scanning the second string */
- switch (*res) {
- case '=':
- break;
- case '>':
- if (e)
- *res = 'g';
- break;
- case '<':
- if (e)
- *res = 'l';
- break;
- default:
- return(0);
- }
+ if (NULL == s3) /* found no middle delimiter */
+ goto out;
- *pos += 1 + e;
+ while ('\0' != *++s3) {
+ if (*s2 != *s3) { /* mismatch */
+ s3 = strchr(s3, *s1);
+ break;
+ }
+ if (*s3 == *s1) { /* found the final delimiter */
+ match = 1;
+ break;
+ }
+ s2++;
+ }
- return(*res);
+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)
{
- int not, lh, rh;
- char op;
+ char *cp, *name;
+ size_t sz;
+ int number, savepos, wanttrue;
- switch (v[*pos]) {
- case ('n'):
+ if ('!' == v[*pos]) {
+ wanttrue = 0;
(*pos)++;
- return(ROFFRULE_ALLOW);
- case ('e'):
- /* FALLTHROUGH */
- case ('o'):
- /* FALLTHROUGH */
- case ('t'):
+ } else
+ wanttrue = 1;
+
+ switch (v[*pos]) {
+ case '\0':
+ return 0;
+ case 'n':
+ case 'o':
(*pos)++;
- return(ROFFRULE_DENY);
- case ('!'):
+ return wanttrue;
+ case 'c':
+ case 'd':
+ case 'e':
+ case 't':
+ case 'v':
(*pos)++;
- not = 1;
- break;
+ return !wanttrue;
+ case 'r':
+ cp = name = v + ++*pos;
+ sz = roff_getname(r, &cp, ln, *pos);
+ *pos = cp - v;
+ return (sz && roff_hasregn(r, name, sz)) == wanttrue;
default:
- not = 0;
break;
}
- if (!roff_getnum(v, pos, &lh))
- return ROFFRULE_DENY;
- if (!roff_getop(v, pos, &op)) {
- if (lh < 0)
- lh = 0;
- goto out;
- }
- if (!roff_getnum(v, pos, &rh))
- return ROFFRULE_DENY;
- switch (op) {
- case 'g':
- lh = lh >= rh;
- break;
- case 'l':
- lh = lh <= rh;
- break;
- case '=':
- lh = lh == rh;
- break;
- case '>':
- lh = lh > rh;
- break;
- case '<':
- lh = lh < rh;
- break;
- default:
- return ROFFRULE_DENY;
- }
-out:
- if (not)
- lh = !lh;
- return lh ? ROFFRULE_ALLOW : 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;
+}
+
+static enum rofferr
+roff_line_ignore(ROFF_ARGS)
+{
+
+ return ROFF_IGN;
}
-/* ARGSUSED */
static enum rofferr
-roff_line_ignore(ROFF_ARGS)
+roff_insec(ROFF_ARGS)
+{
+
+ mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
+ ln, ppos, roffs[tok].name);
+ return ROFF_IGN;
+}
+
+static enum rofferr
+roff_unsupp(ROFF_ARGS)
{
- return(ROFF_IGN);
+ mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
+ ln, ppos, roffs[tok].name);
+ return ROFF_IGN;
}
-/* ARGSUSED */
static enum rofferr
roff_cond(ROFF_ARGS)
{
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.
* not even whitespace, use next-line scope.
*/
- if ('\0' == (*bufp)[pos]) {
+ if (buf->buf[pos] == '\0') {
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, r->parse,
+ ln, ppos, roffs[tok].name);
r->last->endspan = 1;
out:
*offs = pos;
- return(ROFF_RERUN);
+ return ROFF_RERUN;
}
-
-/* ARGSUSED */
static enum rofferr
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);
+ if (name[namesz] == '\\')
+ return ROFF_IGN;
- /* 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, ROFF_as == tok);
- return(ROFF_IGN);
+ roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
+ ROFF_as == tok);
+ 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,
+ r->parse, ln, *pos, v);
+ *res = 0;
+ break;
+ }
+ *res /= operand2;
+ break;
+ case '%':
+ if (operand2 == 0) {
+ mandoc_msg(MANDOCERR_DIVZERO,
+ r->parse, ln, *pos, 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, char sign)
{
* were to turn up, another special value would have to be chosen.
*/
static int
-roff_getregro(const char *name)
+roff_getregro(const struct roff *r, const char *name)
{
switch (*name) {
- 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);
+ case '$': /* Number of arguments of the last macro evaluated. */
+ return r->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);
+ return -1;
}
}
int val;
if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
- val = roff_getregro(name + 1);
+ val = roff_getregro(r, name + 1);
if (-1 != val)
- return (val);
+ return val;
}
for (reg = r->regtab; reg; reg = reg->next)
if (0 == strcmp(name, reg->key.p))
- return(reg->val);
+ return reg->val;
- return(0);
+ return 0;
}
static int
int val;
if ('.' == name[0] && 2 == len) {
- val = roff_getregro(name + 1);
+ 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))
+ return reg->val;
+
+ return 0;
+}
+
+static int
+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 (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
roff_nr(ROFF_ARGS)
{
- const char *key;
- char *val;
- size_t sz;
+ char *key, *val;
+ size_t keysz;
int iv;
char sign;
- val = *bufp + pos;
- key = roff_getname(r, &val, ln, pos);
+ key = val = buf->buf + pos;
+ if (*key == '\0')
+ return ROFF_IGN;
+
+ keysz = roff_getname(r, &val, ln, pos);
+ if (key[keysz] == '\\')
+ return ROFF_IGN;
+ key[keysz] = '\0';
sign = *val;
- if ('+' == sign || '-' == sign)
+ if (sign == '+' || sign == '-')
val++;
- sz = strspn(val, "0123456789");
- iv = sz ? mandoc_strntoi(val, sz, 10) : 0;
+ if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
+ roff_setreg(r, key, iv, sign);
- roff_setreg(r, key, iv, sign);
+ return ROFF_IGN;
+}
- return(ROFF_IGN);
+static enum rofferr
+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 */
+/* --- handler functions for roff requests -------------------------------- */
+
static enum rofferr
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);
+ if (name[namesz] == '\\')
+ break;
}
- return(ROFF_IGN);
+ return ROFF_IGN;
}
-/* ARGSUSED */
static enum rofferr
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, r->parse,
+ ln, ppos, 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
roff_Dd(ROFF_ARGS)
{
const char *const *cp;
- if (0 == r->quick && MPARSE_MDOC != r->parsetype)
+ if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
for (cp = __mdoc_reserved; *cp; cp++)
roff_setstr(r, *cp, NULL, 0);
- return(ROFF_CONT);
+ if (r->format == 0)
+ r->format = MPARSE_MDOC;
+
+ return ROFF_CONT;
}
-/* ARGSUSED */
static enum rofferr
roff_TH(ROFF_ARGS)
{
const char *const *cp;
- if (0 == r->quick && MPARSE_MDOC != r->parsetype)
+ if ((r->options & MPARSE_QUICK) == 0)
for (cp = __man_reserved; *cp; cp++)
roff_setstr(r, *cp, NULL, 0);
- return(ROFF_CONT);
+ if (r->format == 0)
+ r->format = MPARSE_MAN;
+
+ return ROFF_CONT;
}
-/* ARGSUSED */
static enum rofferr
roff_TE(ROFF_ARGS)
{
if (NULL == r->tbl)
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
- else
- tbl_end(&r->tbl);
-
- return(ROFF_IGN);
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
+ ln, ppos, "TE");
+ else if ( ! tbl_end(&r->tbl)) {
+ free(buf->buf);
+ buf->buf = mandoc_strdup(".sp");
+ buf->sz = 4;
+ return ROFF_REPARSE;
+ }
+ return ROFF_IGN;
}
-/* ARGSUSED */
static enum rofferr
roff_T_(ROFF_ARGS)
{
if (NULL == r->tbl)
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
+ ln, ppos, "T&");
else
tbl_restart(ppos, ln, r->tbl);
- return(ROFF_IGN);
+ return ROFF_IGN;
}
-#if 0
-static int
-roff_closeeqn(struct roff *r)
+/*
+ * Handle in-line equation delimiters.
+ */
+static enum rofferr
+roff_eqndelim(struct roff *r, struct buf *buf, int pos)
{
+ char *cp1, *cp2;
+ const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
- return(r->eqn && ROFF_EQN == eqn_end(&r->eqn) ? 1 : 0);
-}
-#endif
+ /*
+ * 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.
+ */
-static void
-roff_openeqn(struct roff *r, const char *name, int line,
- int offs, const char *buf)
-{
- struct eqn_node *e;
- int poff;
+ cp1 = buf->buf + pos;
+ cp2 = strchr(cp1, r->eqn == NULL ?
+ r->last_eqn->odelim : r->last_eqn->cdelim);
+ if (cp2 == NULL)
+ return ROFF_CONT;
- assert(NULL == r->eqn);
- e = eqn_alloc(name, offs, line, r->parse);
+ *cp2++ = '\0';
+ bef_pr = bef_nl = aft_nl = aft_pr = "";
- if (r->last_eqn)
- r->last_eqn->next = e;
- else
- r->first_eqn = r->last_eqn = e;
+ /* Handle preceding text, protecting whitespace. */
- r->eqn = r->last_eqn = e;
+ 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";
- if (buf) {
- poff = 0;
- eqn_read(&r->eqn, line, buf, offs, &poff);
+ /* 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;
}
-/* ARGSUSED */
static enum rofferr
roff_EQ(ROFF_ARGS)
{
+ struct eqn_node *e;
+
+ assert(r->eqn == NULL);
+ e = eqn_alloc(ppos, ln, r->parse);
+
+ if (r->last_eqn) {
+ r->last_eqn->next = e;
+ e->delim = r->last_eqn->delim;
+ e->odelim = r->last_eqn->odelim;
+ e->cdelim = r->last_eqn->cdelim;
+ } else
+ r->first_eqn = r->last_eqn = e;
+
+ r->eqn = r->last_eqn = e;
- roff_openeqn(r, *bufp + pos, ln, ppos, NULL);
- return(ROFF_IGN);
+ if (buf->buf[pos] != '\0')
+ mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
+ ".EQ %s", buf->buf + pos);
+
+ return ROFF_IGN;
}
-/* ARGSUSED */
static enum rofferr
roff_EN(ROFF_ARGS)
{
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
+ return ROFF_IGN;
}
-/* ARGSUSED */
static enum rofferr
roff_TS(ROFF_ARGS)
{
struct tbl_node *tbl;
if (r->tbl) {
- mandoc_msg(MANDOCERR_SCOPEBROKEN, r->parse, ln, ppos, NULL);
+ mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
+ ln, ppos, "TS breaks TS");
tbl_end(&r->tbl);
}
r->first_tbl = r->last_tbl = tbl;
r->tbl = r->last_tbl = tbl;
- return(ROFF_IGN);
+ return ROFF_IGN;
+}
+
+static enum rofferr
+roff_brp(ROFF_ARGS)
+{
+
+ buf->buf[pos - 1] = '\0';
+ return ROFF_CONT;
}
-/* ARGSUSED */
static enum rofferr
roff_cc(ROFF_ARGS)
{
const char *p;
- p = *bufp + pos;
+ p = buf->buf + pos;
- if ('\0' == *p || '.' == (r->control = *p++))
+ if (*p == '\0' || (r->control = *p++) == '.')
r->control = 0;
- if ('\0' != *p)
- mandoc_msg(MANDOCERR_ARGCOUNT, r->parse, ln, ppos, NULL);
+ if (*p != '\0')
+ mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
+ ln, p - buf->buf, "cc ... %s", p);
- return(ROFF_IGN);
+ return ROFF_IGN;
}
-/* ARGSUSED */
static enum rofferr
roff_tr(ROFF_ARGS)
{
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, r->parse, 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, r->parse,
+ ln, (int)(p - buf->buf), 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, r->parse,
+ ln, (int)(p - buf->buf), 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_vmsg(MANDOCERR_TR_ODD, r->parse,
+ ln, 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;
}
-/* ARGSUSED */
static enum rofferr
roff_so(ROFF_ARGS)
{
- char *name;
+ char *name, *cp;
- mandoc_msg(MANDOCERR_SO, r->parse, ln, ppos, NULL);
+ name = buf->buf + pos;
+ mandoc_vmsg(MANDOCERR_SO, r->parse, 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_vmsg(MANDOCERR_SO_PATH, r->parse, 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 */
+/* --- user defined strings and macros ------------------------------------ */
+
static enum rofferr
roff_userdef(ROFF_ARGS)
{
- const char *arg[9];
+ const char *arg[9], *ap;
char *cp, *n1, *n2;
- int i;
+ int expand_count, i, ib, ie;
+ size_t asz, rsz;
/*
* Collect pointers to macro argument strings
* and NUL-terminate them.
*/
- cp = *bufp + pos;
- for (i = 0; i < 9; i++)
- arg[i] = '\0' == *cp ? "" :
- mandoc_getarg(r->parse, &cp, ln, &pos);
+
+ r->argc = 0;
+ cp = buf->buf + pos;
+ for (i = 0; i < 9; i++) {
+ if (*cp == '\0')
+ arg[i] = "";
+ else {
+ arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
+ r->argc = i + 1;
+ }
+ }
/*
* 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;
+
+ buf->sz = strlen(r->current_string) + 1;
+ n1 = n2 = cp = mandoc_malloc(buf->sz);
+ memcpy(n1, r->current_string, buf->sz);
+ expand_count = 0;
+ while (*cp != '\0') {
+
+ /* Scan ahead for the next argument invocation. */
+
+ if (*cp++ != '\\')
+ continue;
+ if (*cp++ != '$')
continue;
+ if (*cp == '*') { /* \\$* inserts all arguments */
+ ib = 0;
+ ie = r->argc - 1;
+ } else { /* \\$1 .. \\$9 insert one argument */
+ ib = ie = *cp - '1';
+ if (ib < 0 || ib > 8)
+ continue;
+ }
+ cp -= 2;
+
+ /*
+ * Prevent infinite recursion.
+ */
+
+ if (cp >= n2)
+ expand_count = 1;
+ else if (++expand_count > EXPAND_LIMIT) {
+ mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
+ ln, (int)(cp - n1), NULL);
+ free(buf->buf);
+ buf->buf = n1;
+ return ROFF_IGN;
+ }
+
+ /*
+ * Determine the size of the expanded argument,
+ * taking escaping of quotes into account.
+ */
+
+ asz = ie > ib ? ie - ib : 0; /* for blanks */
+ for (i = ib; i <= ie; i++) {
+ for (ap = arg[i]; *ap != '\0'; ap++) {
+ asz++;
+ if (*ap == '"')
+ asz += 3;
+ }
}
+ if (asz != 3) {
+
+ /*
+ * Determine the size of the rest of the
+ * unexpanded macro, including the NUL.
+ */
+
+ rsz = buf->sz - (cp - n1) - 3;
+
+ /*
+ * When shrinking, move before
+ * releasing the storage.
+ */
+
+ if (asz < 3)
+ memmove(cp + asz, cp + 3, rsz);
+
+ /*
+ * Resize the storage for the macro
+ * and readjust the parse pointer.
+ */
+
+ buf->sz += asz - 3;
+ n2 = mandoc_realloc(n1, buf->sz);
+ cp = n2 + (cp - n1);
+ n1 = n2;
+
+ /*
+ * When growing, make room
+ * for the expanded argument.
+ */
- *szp = strlen(n1) - 3 + strlen(arg[i]) + 1;
- n2 = mandoc_malloc(*szp);
+ if (asz > 3)
+ memmove(cp + asz, cp + 3, rsz);
+ }
- strlcpy(n2, n1, (size_t)(cp - n1 + 1));
- strlcat(n2, arg[i], *szp);
- strlcat(n2, cp + 3, *szp);
+ /* Copy the expanded argument, escaping quotes. */
- cp = n2 + (cp - n1);
- free(n1);
- n1 = n2;
+ n2 = cp;
+ for (i = ib; i <= ie; i++) {
+ for (ap = arg[i]; *ap != '\0'; ap++) {
+ if (*ap == '"') {
+ memcpy(n2, "\\(dq", 4);
+ n2 += 4;
+ } else
+ *n2++ = *ap;
+ }
+ if (i < ie)
+ *n2++ = ' ';
+ }
}
/*
* Replace the macro invocation
* by the expanded macro.
*/
- free(*bufp);
- *bufp = n1;
- if (0 == *szp)
- *szp = strlen(*bufp) + 1;
- return(*szp > 1 && '\n' == (*bufp)[(int)*szp - 2] ?
- ROFF_REPARSE : ROFF_APPEND);
+ free(buf->buf);
+ buf->buf = n1;
+ *offs = 0;
+
+ return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
+ ROFF_REPARSE : ROFF_APPEND;
}
-static char *
+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);
+ return 0;
- /* Read until end of name. */
- for (cp = name; '\0' != *cp && ' ' != *cp; cp++) {
+ /* Read until end of name and terminate it with NUL. */
+ for (cp = name; 1; cp++) {
+ if ('\0' == *cp || ' ' == *cp) {
+ namesz = cp - name;
+ break;
+ }
if ('\\' != *cp)
continue;
+ namesz = cp - name;
+ if ('{' == cp[1] || '}' == cp[1])
+ break;
cp++;
if ('\\' == *cp)
continue;
- mandoc_msg(MANDOCERR_NAMESC, r->parse, ln, pos, NULL);
- *cp = '\0';
- name = cp;
+ mandoc_vmsg(MANDOCERR_NAMESC, r->parse, 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)
cp++;
*cpp = cp;
- return(name);
+ return namesz;
}
/*
{
roff_setstrn(&r->strtab, name, strlen(name), string,
- string ? strlen(string) : 0, append);
+ string ? strlen(string) : 0, append);
}
static void
/* 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) {
int i;
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);
+ if (0 == strncmp(name, n->key.p, len) &&
+ '\0' == n->key.p[(int)len])
+ return n->val.p;
for (i = 0; i < PREDEFS_MAX; i++)
if (0 == strncmp(name, predefs[i].name, len) &&
'\0' == predefs[i].name[(int)len])
- return(predefs[i].str);
+ return predefs[i].str;
- return(NULL);
+ return NULL;
}
static void
}
}
+/* --- accessors and utility functions ------------------------------------ */
+
const struct tbl_span *
roff_span(const struct roff *r)
{
-
- return(r->tbl ? tbl_span(r->tbl) : NULL);
+
+ 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);
+
+ return r->last_eqn ? &r->last_eqn->eqn : NULL;
}
/*
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.
*/
}
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
if (0 != r->control && cp[pos] == r->control)
pos++;
else if (0 != r->control)
- return(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;
}
git.ckatri.com / mandoc.git / blobdiff