-/* $Id: roff.c,v 1.175 2012/11/19 17:57:23 schwarze Exp $ */
+/* $Id: roff.c,v 1.227 2014/09/06 22:39:36 schwarze Exp $ */
/*
* Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2010, 2011, 2012 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010-2014 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mandoc.h"
-#include "libroff.h"
+#include "mandoc_aux.h"
#include "libmandoc.h"
+#include "libroff.h"
/* Maximum number of nested if-else conditionals. */
#define RSTACK_MAX 128
ROFF_am,
ROFF_ami,
ROFF_am1,
+ ROFF_as,
ROFF_cc,
+ ROFF_ce,
ROFF_de,
ROFF_dei,
ROFF_de1,
ROFF_ds,
ROFF_el,
+ ROFF_fam,
+ ROFF_hw,
ROFF_hy,
ROFF_ie,
ROFF_if,
ROFF_ns,
ROFF_ps,
ROFF_rm,
+ ROFF_rr,
ROFF_so,
ROFF_ta,
ROFF_tr,
ROFF_EQ,
ROFF_EN,
ROFF_cblock,
- ROFF_ccond,
ROFF_USERDEF,
ROFF_MAX
};
-enum roffrule {
- ROFFRULE_ALLOW,
- ROFFRULE_DENY
-};
-
-/*
- * A single register entity. If "set" is zero, the value of the
- * register should be the default one, which is per-register.
- * Registers are assumed to be unsigned ints for now.
- */
-struct reg {
- int set; /* whether set or not */
- unsigned int u; /* unsigned integer */
-};
-
/*
* An incredibly-simple string buffer.
*/
struct roffkv *next; /* next in list */
};
+/*
+ * A single number register as part of a singly-linked list.
+ */
+struct roffreg {
+ struct roffstr key;
+ int val;
+ struct roffreg *next;
+};
+
struct roff {
- enum mparset parsetype; /* requested parse type */
struct mparse *parse; /* parse point */
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 reg regs[REG__MAX];
+ 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 roffstr *xtab; /* single-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 options; /* parse options */
+ 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 */
};
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 */ \
+ char **bufp, /* input buffer */ \
size_t *szp, /* size of input buffer */ \
int ln, /* parse line */ \
int ppos, /* original pos in buffer */ \
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 void roff_ccond(struct roff *, int, int);
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 int roff_evalcond(const char *, int *);
+static int roff_evalnum(const char *, int *, int *, int);
+static int roff_evalpar(const char *, 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 const char *roff_getstrn(const struct roff *,
+static size_t roff_getname(struct roff *, char **, int, int);
+static int roff_getnum(const char *, 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 *,
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 *);
-static enum rofferr roff_res(struct roff *,
+static enum rofft roff_parse(struct roff *, char *, int *,
+ int, 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 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);
{ "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 },
+ { "as", roff_ds, NULL, NULL, 0, NULL },
{ "cc", roff_cc, NULL, NULL, 0, NULL },
+ { "ce", roff_line_ignore, 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 },
+ { "fam", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "hw", roff_line_ignore, NULL, NULL, 0, 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_line_ignore, NULL, NULL, 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 },
+ { "rr", roff_rr, 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 },
{ "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 },
};
+/* 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
};
/* See roffhash_find() */
#define ROFF_HASH(p) (p[0] - ASCII_LO)
+static int roffit_lines; /* number of lines to delay */
+static char *roffit_macro; /* nil-terminated macro line */
+
+
static void
roffhash_init(void)
{
return(ROFF_MAX);
}
-
/*
* Pop the current node off of the stack of roff instructions currently
* pending.
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;
}
-
static void
roff_free1(struct roff *r)
{
- struct tbl_node *t;
+ struct tbl_node *tbl;
struct eqn_node *e;
int i;
- while (NULL != (t = r->first_tbl)) {
- r->first_tbl = t->next;
- tbl_free(t);
+ while (NULL != (tbl = r->first_tbl)) {
+ 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);
+ 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;
}
void
roff_reset(struct roff *r)
{
- int i;
roff_free1(r);
-
+ r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
r->control = 0;
- memset(&r->regs, 0, sizeof(struct reg) * REG__MAX);
-
- for (i = 0; i < PREDEFS_MAX; i++)
- roff_setstr(r, predefs[i].name, predefs[i].str, 0);
}
-
void
roff_free(struct roff *r)
{
free(r);
}
-
struct roff *
-roff_alloc(enum mparset type, struct mparse *parse)
+roff_alloc(struct mparse *parse, int options)
{
struct roff *r;
- int i;
r = mandoc_calloc(1, sizeof(struct roff));
- r->parsetype = type;
r->parse = parse;
+ r->options = options;
+ r->format = options & (MPARSE_MDOC | MPARSE_MAN);
r->rstackpos = -1;
-
- roffhash_init();
- for (i = 0; i < PREDEFS_MAX; i++)
- roff_setstr(r, predefs[i].name, predefs[i].str, 0);
+ roffhash_init();
return(r);
}
/*
- * Pre-filter each and every line for reserved words (one beginning with
- * `\*', e.g., `\*(ab'). These must be handled before the actual line
- * is processed.
- * This also checks the syntax of regular escapes.
+ * 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)
{
- enum mandoc_esc esc;
- 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 */
- int i, maxl, expand_count;
- size_t nsz;
- char *n;
+ char *nbuf; /* new buffer to copy bufp to */
+ 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 */
+ int npos; /* position in numeric expression */
+ int arg_complete; /* argument not interrupted by eol */
+ char term; /* character terminating the escape */
expand_count = 0;
+ start = *bufp + 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.
- * If it isn't, skip it anyway: It is escaped,
- * so it can't start another escape sequence.
- */
+ if ('\\' != *stesc)
+ continue;
- if ('\0' == *cp)
- return(ROFF_CONT);
-
- if ('*' != *cp) {
- res = cp;
- esc = mandoc_escape(&cp, NULL, NULL);
- if (ESCAPE_ERROR != esc)
- continue;
- cp = res;
- mandoc_msg
- (MANDOCERR_BADESCAPE, r->parse,
- ln, (int)(stesc - *bufp), NULL);
- return(ROFF_CONT);
+ /* If it is escaped, skip it. */
+
+ for (cp = stesc - 1; cp >= start; cp--)
+ if ('\\' != *cp)
+ break;
+
+ if (0 == (stesc - cp) % 2) {
+ stesc = (char *)cp;
+ continue;
}
- cp++;
+ /* Decide whether to expand or to check only. */
+
+ term = '\0';
+ cp = stesc + 1;
+ switch (*cp) {
+ case '*':
+ res = NULL;
+ break;
+ case 'B':
+ /* FALLTHROUGH */
+ case 'w':
+ term = cp[1];
+ /* FALLTHROUGH */
+ case 'n':
+ res = ubuf;
+ break;
+ default:
+ if (ESCAPE_ERROR == mandoc_escape(&cp, NULL, NULL))
+ mandoc_vmsg(MANDOCERR_ESC_BAD,
+ r->parse, ln, (int)(stesc - *bufp),
+ "%.*s", (int)(cp - stesc), stesc);
+ continue;
+ }
+
+ if (EXPAND_LIMIT < ++expand_count) {
+ mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
+ ln, (int)(stesc - *bufp), NULL);
+ return(ROFF_IGN);
+ }
/*
* The third character decides the length
- * of the name of the string.
+ * of the name of the string or register.
* Save a pointer to the name.
*/
- switch (*cp) {
- case ('\0'):
- return(ROFF_CONT);
- case ('('):
- cp++;
- maxl = 2;
- break;
- case ('['):
- cp++;
+ if ('\0' == term) {
+ 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 (i = 0; 0 == maxl || i < maxl; i++, cp++) {
+ arg_complete = 1;
+ 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);
+ mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
+ ln, (int)(stesc - *bufp), stesc);
+ arg_complete = 0;
+ break;
}
- if (0 == maxl && ']' == *cp)
+ if (0 == maxl && *cp == term) {
+ cp++;
break;
+ }
}
/*
* undefined, resume searching for escapes.
*/
- res = roff_getstrn(r, stnam, (size_t)i);
+ switch (stesc[1]) {
+ case '*':
+ if (arg_complete)
+ res = roff_getstrn(r, stnam, naml);
+ break;
+ case 'B':
+ npos = 0;
+ ubuf[0] = arg_complete &&
+ roff_evalnum(stnam, &npos, NULL, 0) &&
+ 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 (NULL == res) {
- mandoc_msg
- (MANDOCERR_BADESCAPE, r->parse,
- ln, (int)(stesc - *bufp), NULL);
+ mandoc_vmsg(MANDOCERR_STR_UNDEF,
+ r->parse, ln, (int)(stesc - *bufp),
+ "%.*s", (int)naml, stnam);
res = "";
}
/* Replace the escape sequence by the string. */
- pos = stesc - *bufp;
-
- nsz = *szp + strlen(res) + 1;
- n = mandoc_malloc(nsz);
+ *stesc = '\0';
+ *szp = mandoc_asprintf(&nbuf, "%s%s%s",
+ *bufp, res, cp) + 1;
- strlcpy(n, *bufp, (size_t)(stesc - *bufp + 1));
- strlcat(n, res, nsz);
- strlcat(n, cp + (maxl ? 0 : 1), nsz);
+ /* Prepare for the next replacement. */
+ start = nbuf + pos;
+ stesc = nbuf + (stesc - *bufp) + strlen(res);
free(*bufp);
-
- *bufp = n;
- *szp = nsz;
-
- if (EXPAND_LIMIT >= ++expand_count)
- goto again;
-
- /* Just leave the string unexpanded. */
- mandoc_msg(MANDOCERR_ROFFLOOP, r->parse, ln, pos, NULL);
- return(ROFF_IGN);
+ *bufp = nbuf;
}
return(ROFF_CONT);
}
/*
- * Process text streams: convert all breakable hyphens into ASCII_HYPH.
+ * Process text streams:
+ * Convert all breakable hyphens into ASCII_HYPH.
+ * Decrement and spring input line trap.
*/
static enum rofferr
-roff_parsetext(char *p)
+roff_parsetext(char **bufp, size_t *szp, int pos, int *offs)
{
size_t sz;
const char *start;
+ char *p;
+ int isz;
enum mandoc_esc esc;
- start = p;
+ start = p = *bufp + pos;
while ('\0' != *p) {
sz = strcspn(p, "-\\");
if ('\\' == *p) {
/* Skip over escapes. */
p++;
- esc = mandoc_escape
- ((const char **)&p, NULL, NULL);
+ esc = mandoc_escape((const char **)&p, NULL, NULL);
if (ESCAPE_ERROR == esc)
break;
continue;
p++;
}
+ /* Spring the input line trap. */
+ if (1 == roffit_lines) {
+ isz = mandoc_asprintf(&p, "%s\n.%s", *bufp, roffit_macro);
+ 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);
}
enum rofferr
-roff_parseln(struct roff *r, int ln, char **bufp,
+roff_parseln(struct roff *r, int ln, char **bufp,
size_t *szp, int pos, int *offs)
{
enum rofft t;
if (r->last && ! ctl) {
t = r->last->tok;
assert(roffs[t].text);
- e = (*roffs[t].text)
- (r, t, bufp, szp, ln, pos, pos, offs);
+ 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, pos, offs));
- if (r->tbl)
- return(tbl_read(r->tbl, ln, *bufp, pos));
- return(roff_parsetext(*bufp + pos));
- } else if ( ! ctl) {
- if (r->eqn)
- return(eqn_read(&r->eqn, ln, *bufp, pos, offs));
+ }
+ 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 + pos));
- } else if (r->eqn)
- return(eqn_read(&r->eqn, ln, *bufp, ppos, offs));
+ return(roff_parsetext(bufp, szp, pos, offs));
+ }
/*
* 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, bufp, szp,
+ ln, ppos, pos, offs));
}
/*
* the compilers handle it.
*/
- if (ROFF_MAX == (t = roff_parse(r, *bufp, &pos)))
+ if (ROFF_MAX == (t = roff_parse(r, *bufp, &pos, ln, ppos)))
return(ROFF_CONT);
assert(roffs[t].proc);
- return((*roffs[t].proc)
- (r, t, bufp, szp,
- ln, ppos, pos, offs));
+ return((*roffs[t].proc)(r, t, bufp, szp, 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.
- * However, `\}' is also a valid macro, so make sure we don't
- * clobber it by seeing the `\' as the end of token.
- */
+ if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
+ return(ROFF_MAX);
- mac = buf + *pos;
- maclen = strcspn(mac + 1, " \\\t\0") + 1;
+ 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;
-
- while (buf[*pos] && ' ' == buf[*pos])
- (*pos)++;
+ if (ROFF_MAX != t)
+ *pos = cp - buf;
return(t);
}
-/* ARGSUSED */
static enum rofferr
roff_cblock(ROFF_ARGS)
{
*/
if (NULL == r->last) {
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
+ ln, ppos, "..");
return(ROFF_IGN);
}
switch (r->last->tok) {
- case (ROFF_am):
- /* FALLTHROUGH */
- case (ROFF_ami):
+ case ROFF_am:
+ /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
/* FALLTHROUGH */
- case (ROFF_am1):
+ case ROFF_ami:
/* FALLTHROUGH */
- case (ROFF_de):
+ case ROFF_de:
/* ROFF_de1 is remapped to ROFF_de in roff_block(). */
/* FALLTHROUGH */
- case (ROFF_dei):
+ case ROFF_dei:
/* FALLTHROUGH */
- case (ROFF_ig):
+ case ROFF_ig:
break;
default:
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
+ ln, ppos, "..");
return(ROFF_IGN);
}
if ((*bufp)[pos])
- mandoc_msg(MANDOCERR_ARGSLOST, r->parse, ln, pos, NULL);
+ mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
+ ".. %s", *bufp + pos);
roffnode_pop(r);
roffnode_cleanscope(r);
}
-
static void
roffnode_cleanscope(struct roff *r)
{
}
}
-
-/* ARGSUSED */
-static enum rofferr
-roff_ccond(ROFF_ARGS)
+static void
+roff_ccond(struct roff *r, int ln, int ppos)
{
if (NULL == r->last) {
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
+ ln, ppos, "\\}");
+ return;
}
switch (r->last->tok) {
- case (ROFF_el):
+ case ROFF_el:
/* FALLTHROUGH */
- case (ROFF_ie):
+ case ROFF_ie:
/* FALLTHROUGH */
- case (ROFF_if):
+ case ROFF_if:
break;
default:
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
+ ln, ppos, "\\}");
+ return;
}
if (r->last->endspan > -1) {
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
+ ln, ppos, "\\}");
+ return;
}
- if ((*bufp)[pos])
- mandoc_msg(MANDOCERR_ARGSLOST, r->parse, ln, pos, NULL);
-
roffnode_pop(r);
roffnode_cleanscope(r);
- return(ROFF_IGN);
+ return;
}
-
-/* ARGSUSED */
static enum rofferr
roff_block(ROFF_ARGS)
{
- int sv;
- size_t sz;
- char *name;
+ const char *name;
+ char *iname, *cp;
+ size_t namesz;
- name = NULL;
+ /* Ignore groff compatibility mode for now. */
- if (ROFF_ig != tok) {
- if ('\0' == (*bufp)[pos]) {
- mandoc_msg(MANDOCERR_NOARGS, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
- }
+ if (ROFF_de1 == tok)
+ tok = ROFF_de;
+ else if (ROFF_am1 == tok)
+ tok = ROFF_am;
- /*
- * Re-write `de1', since we don't really care about
- * groff's strange compatibility mode, into `de'.
- */
+ /* Parse the macro name argument. */
- 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);
+ cp = *bufp + pos;
+ if (ROFF_ig == tok) {
+ iname = NULL;
+ namesz = 0;
+ } else {
+ iname = cp;
+ namesz = roff_getname(r, &cp, ln, ppos);
+ iname[namesz] = '\0';
+ }
+
+ /* Resolve the macro name argument if it is indirect. */
- while ((*bufp)[pos] && ! isspace((unsigned char)(*bufp)[pos]))
- pos++;
+ if (namesz && (ROFF_dei == tok || ROFF_ami == tok)) {
+ if (NULL == (name = roff_getstrn(r, iname, namesz))) {
+ mandoc_vmsg(MANDOCERR_STR_UNDEF,
+ r->parse, ln, (int)(iname - *bufp),
+ "%.*s", (int)namesz, iname);
+ namesz = 0;
+ } else
+ namesz = strlen(name);
+ } else
+ name = iname;
- while (isspace((unsigned char)(*bufp)[pos]))
- (*bufp)[pos++] = '\0';
+ if (0 == namesz && ROFF_ig != tok) {
+ mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
+ ln, ppos, roffs[tok].name);
+ 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 (ROFF_de == tok || ROFF_dei == tok)
+ roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
- if ('\0' == (*bufp)[pos])
+ if ('\0' == *cp)
return(ROFF_IGN);
- /* If present, process the custom end-of-line marker. */
+ /* Get the custom end marker. */
- sv = pos;
- while ((*bufp)[pos] && ! isspace((unsigned char)(*bufp)[pos]))
- pos++;
-
- /*
- * 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.
- */
-
- 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 && (ROFF_dei == tok || ROFF_ami == tok)) {
+ if (NULL == (name = roff_getstrn(r, iname, namesz))) {
+ mandoc_vmsg(MANDOCERR_STR_UNDEF,
+ r->parse, ln, (int)(iname - *bufp),
+ "%.*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 ('\0' != *cp)
+ mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
+ ln, pos, ".%s ... %s", roffs[tok].name, cp);
return(ROFF_IGN);
}
-
-/* ARGSUSED */
static enum rofferr
roff_block_sub(ROFF_ARGS)
{
if ((*bufp)[i] != r->last->end[j])
break;
- if ('\0' == r->last->end[j] &&
- ('\0' == (*bufp)[i] ||
- ' ' == (*bufp)[i] ||
- '\t' == (*bufp)[i])) {
+ if ('\0' == r->last->end[j] &&
+ ('\0' == (*bufp)[i] ||
+ ' ' == (*bufp)[i] ||
+ '\t' == (*bufp)[i])) {
roffnode_pop(r);
roffnode_cleanscope(r);
i++;
pos = i;
- if (ROFF_MAX != roff_parse(r, *bufp, &pos))
+ if (ROFF_MAX != roff_parse(r, *bufp, &pos, ln, ppos))
return(ROFF_RERUN);
return(ROFF_IGN);
}
* pulling it out of the hashtable.
*/
- t = roff_parse(r, *bufp, &pos);
+ t = roff_parse(r, *bufp, &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);
+ if (ROFF_ig != tok)
+ roff_setstr(r, r->last->name, *bufp + 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, bufp, szp, 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, 1);
+ if (ROFF_ig != tok)
+ roff_setstr(r, r->last->name, *bufp + pos, 2);
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, ln, ppos);
/*
- * If the macro is unknown, first check if it contains a closing
- * delimiter `\}'. If it does, close out our scope and return
- * the currently-scoped rule (ignore or continue). Else, drop
- * into the currently-scoped rule.
+ * Fully handle known macros when they are structurally
+ * required or when the conditional evaluated to true.
*/
- if (ROFF_MAX == (t = roff_parse(r, *bufp, &pos))) {
- ep = &(*bufp)[pos];
- for ( ; NULL != (ep = strchr(ep, '\\')); ep++) {
- ep++;
- if ('}' != *ep)
- continue;
-
- /*
- * Make the \} go away.
- * This is a little haphazard, as it's not quite
- * clear how nroff does this.
- * If we're at the end of line, then just chop
- * off the \} and resize the buffer.
- * If we aren't, then conver it to spaces.
- */
-
- if ('\0' == *(ep + 1)) {
- *--ep = '\0';
- *szp -= 2;
- } else
- *(ep - 1) = *ep = ' ';
-
- roff_ccond(r, ROFF_ccond, bufp, szp,
- ln, pos, pos + 2, offs);
- break;
- }
- return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT);
+ if ((ROFF_MAX != t) &&
+ (rr || ROFFMAC_STRUCT & roffs[t].flags)) {
+ assert(roffs[t].proc);
+ return((*roffs[t].proc)(r, t, bufp, szp,
+ ln, ppos, pos, offs));
}
/*
- * A denied conditional must evaluate its children if and only
- * if they're either structurally required (such as loops and
- * conditionals) or a closing macro.
+ * If `\}' occurs on a macro line without a preceding macro,
+ * drop the line completely.
*/
- if (ROFFRULE_DENY == rr)
- if ( ! (ROFFMAC_STRUCT & roffs[t].flags))
- if (ROFF_ccond != t)
- return(ROFF_IGN);
+ ep = *bufp + pos;
+ if ('\\' == ep[0] && '}' == ep[1])
+ rr = 0;
- assert(roffs[t].proc);
- return((*roffs[t].proc)(r, t, bufp, szp,
- ln, ppos, pos, offs));
+ /* Always check for the closing delimiter `\}'. */
+
+ while (NULL != (ep = strchr(ep, '\\'))) {
+ if ('}' == *(++ep)) {
+ *ep = '&';
+ roff_ccond(r, ln, ep - *bufp - 1);
+ }
+ ++ep;
+ }
+ 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];
- for ( ; NULL != (ep = strchr(ep, '\\')); ep++) {
- ep++;
- if ('}' != *ep)
- continue;
- *ep = '&';
- roff_ccond(r, ROFF_ccond, bufp, szp,
- ln, pos, pos + 2, offs);
+ ep = *bufp + pos;
+ while (NULL != (ep = strchr(ep, '\\'))) {
+ if ('}' == *(++ep)) {
+ *ep = '&';
+ roff_ccond(r, ln, ep - *bufp - 1);
+ }
+ ++ep;
+ }
+ return(rr ? ROFF_CONT : ROFF_IGN);
+}
+
+/*
+ * 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 myres, n, p;
+
+ if (NULL == res)
+ res = &myres;
+
+ p = *pos;
+ n = v[p] == '-';
+ if (n)
+ 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;
+
+ *pos = p;
+ 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_evalstrcond(const char *v, int *pos)
+{
+ const char *s1, *s2, *s3;
+ int match;
+
+ match = 0;
+ s1 = v + *pos; /* initial delimiter */
+ s2 = s1 + 1; /* for scanning the first string */
+ s3 = strchr(s2, *s1); /* for scanning the second string */
+
+ 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
+ s3++;
+ *pos = s3 - v;
+ return(match);
}
-static enum roffrule
+/*
+ * Evaluate an optionally negated single character, numerical,
+ * or string condition.
+ */
+static int
roff_evalcond(const char *v, int *pos)
{
+ int wanttrue, number;
+
+ if ('!' == v[*pos]) {
+ wanttrue = 0;
+ (*pos)++;
+ } else
+ wanttrue = 1;
switch (v[*pos]) {
- case ('n'):
+ case 'n':
+ /* FALLTHROUGH */
+ case 'o':
(*pos)++;
- return(ROFFRULE_ALLOW);
- case ('e'):
+ return(wanttrue);
+ case 'c':
+ /* FALLTHROUGH */
+ case 'd':
+ /* FALLTHROUGH */
+ case 'e':
/* FALLTHROUGH */
- case ('o'):
+ case 'r':
/* FALLTHROUGH */
- case ('t'):
+ case 't':
(*pos)++;
- return(ROFFRULE_DENY);
+ return(!wanttrue);
default:
break;
}
- while (v[*pos] && ' ' != v[*pos])
- (*pos)++;
- return(ROFFRULE_DENY);
+ if (roff_evalnum(v, pos, &number, 0))
+ return((number > 0) == wanttrue);
+ else
+ return(roff_evalstrcond(v, pos) == wanttrue);
}
-/* ARGSUSED */
static enum rofferr
roff_line_ignore(ROFF_ARGS)
{
- if (ROFF_it == tok)
- mandoc_msg(MANDOCERR_REQUEST, r->parse, ln, ppos, "it");
-
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->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
+ roff_evalcond(*bufp, &pos);
/*
* An if-else will put the NEGATION of the current evaluated
*/
if (ROFF_ie == tok) {
- if (r->rstackpos == RSTACK_MAX - 1) {
- mandoc_msg(MANDOCERR_MEM,
- r->parse, ln, ppos, NULL);
- return(ROFF_ERR);
+ 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.
r->last->endspan = -1;
pos += 2;
goto out;
- }
+ }
/*
* Anything else following the conditional causes
*/
if ('\0' == (*bufp)[pos])
- mandoc_msg(MANDOCERR_NOARGS, r->parse, ln, ppos, NULL);
+ mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
+ ln, ppos, roffs[tok].name);
r->last->endspan = 1;
return(ROFF_RERUN);
}
-
-/* ARGSUSED */
static enum rofferr
roff_ds(ROFF_ARGS)
{
- char *name, *string;
+ char *string;
+ const char *name;
+ size_t namesz;
/*
- * 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);
+ name = string = *bufp + pos;
if ('\0' == *name)
return(ROFF_IGN);
- /* Read past initial double-quote. */
+ namesz = roff_getname(r, &string, ln, pos);
+ if ('\\' == name[namesz])
+ return(ROFF_IGN);
+
+ /* Read past the initial double-quote, if any. */
if ('"' == *string)
string++;
/* The rest is the value. */
- roff_setstr(r, name, string, 0);
+ roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
+ ROFF_as == tok);
return(ROFF_IGN);
}
-int
-roff_regisset(const struct roff *r, enum regs reg)
+/*
+ * 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)
{
- return(r->regs[(int)reg].set);
+ *res = v[*pos];
+
+ switch (*res) {
+ case '+':
+ /* FALLTHROUGH */
+ case '-':
+ /* FALLTHROUGH */
+ case '*':
+ /* FALLTHROUGH */
+ case '/':
+ /* FALLTHROUGH */
+ case '%':
+ /* FALLTHROUGH */
+ case '&':
+ /* FALLTHROUGH */
+ 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);
}
-unsigned int
-roff_regget(const struct roff *r, enum regs reg)
+/*
+ * Evaluate either a parenthesized numeric expression
+ * or a single signed integer number.
+ */
+static int
+roff_evalpar(const char *v, int *pos, int *res)
{
- return(r->regs[(int)reg].u);
+ if ('(' != v[*pos])
+ return(roff_getnum(v, pos, res));
+
+ (*pos)++;
+ if ( ! roff_evalnum(v, pos, res, 1))
+ 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(const char *v, int *pos, int *res, int skipwhite)
+{
+ int mypos, operand2;
+ char operator;
+
+ if (NULL == pos) {
+ mypos = 0;
+ pos = &mypos;
+ }
+
+ if (skipwhite)
+ while (isspace((unsigned char)v[*pos]))
+ (*pos)++;
+
+ if ( ! roff_evalpar(v, pos, res))
+ return(0);
+
+ while (1) {
+ if (skipwhite)
+ while (isspace((unsigned char)v[*pos]))
+ (*pos)++;
+
+ if ( ! roff_getop(v, pos, &operator))
+ break;
+
+ if (skipwhite)
+ while (isspace((unsigned char)v[*pos]))
+ (*pos)++;
+
+ if ( ! roff_evalpar(v, pos, &operand2))
+ return(0);
+
+ if (skipwhite)
+ 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 '/':
+ *res /= operand2;
+ break;
+ case '%':
+ *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);
}
void
-roff_regunset(struct roff *r, enum regs reg)
+roff_setreg(struct roff *r, const char *name, int val, char sign)
+{
+ struct roffreg *reg;
+
+ /* Search for an existing register with the same name. */
+ reg = r->regtab;
+
+ while (reg && strcmp(name, reg->key.p))
+ 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->val = 0;
+ reg->next = r->regtab;
+ r->regtab = reg;
+ }
+
+ if ('+' == sign)
+ reg->val += val;
+ else if ('-' == sign)
+ reg->val -= val;
+ else
+ reg->val = val;
+}
+
+/*
+ * 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 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);
+ default:
+ return (-1);
+ }
+}
+
+int
+roff_getreg(const struct roff *r, const char *name)
{
+ struct roffreg *reg;
+ int val;
+
+ if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
+ val = roff_getregro(name + 1);
+ if (-1 != val)
+ return (val);
+ }
+
+ for (reg = r->regtab; reg; reg = reg->next)
+ if (0 == strcmp(name, reg->key.p))
+ return(reg->val);
- r->regs[(int)reg].set = 0;
+ return(0);
+}
+
+static int
+roff_getregn(const struct roff *r, const char *name, size_t len)
+{
+ struct roffreg *reg;
+ int val;
+
+ if ('.' == name[0] && 2 == len) {
+ val = roff_getregro(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 void
+roff_freereg(struct roffreg *reg)
+{
+ struct roffreg *old_reg;
+
+ while (NULL != reg) {
+ free(reg->key.p);
+ old_reg = reg;
+ reg = reg->next;
+ free(old_reg);
+ }
}
-/* ARGSUSED */
static enum rofferr
roff_nr(ROFF_ARGS)
{
- const char *key;
- char *val;
+ char *key, *val;
+ size_t keysz;
int iv;
+ char sign;
- val = *bufp + pos;
- key = roff_getname(r, &val, ln, pos);
+ key = val = *bufp + pos;
+ if ('\0' == *key)
+ return(ROFF_IGN);
- if (0 == strcmp(key, "nS")) {
- r->regs[(int)REG_nS].set = 1;
- if ((iv = mandoc_strntoi(val, strlen(val), 10)) >= 0)
- r->regs[(int)REG_nS].u = (unsigned)iv;
- else
- r->regs[(int)REG_nS].u = 0u;
- }
+ keysz = roff_getname(r, &val, ln, pos);
+ if ('\\' == key[keysz])
+ return(ROFF_IGN);
+ key[keysz] = '\0';
+
+ sign = *val;
+ if ('+' == sign || '-' == sign)
+ val++;
+
+ if (roff_evalnum(val, NULL, &iv, 0))
+ roff_setreg(r, key, iv, sign);
return(ROFF_IGN);
}
-/* ARGSUSED */
+static enum rofferr
+roff_rr(ROFF_ARGS)
+{
+ struct roffreg *reg, **prev;
+ char *name, *cp;
+ size_t namesz;
+
+ name = cp = *bufp + pos;
+ if ('\0' == *name)
+ return(ROFF_IGN);
+ namesz = roff_getname(r, &cp, ln, pos);
+ name[namesz] = '\0';
+
+ prev = &r->regtab;
+ while (1) {
+ reg = *prev;
+ if (NULL == reg || !strcmp(name, reg->key.p))
+ break;
+ prev = ®->next;
+ }
+ if (NULL != reg) {
+ *prev = reg->next;
+ free(reg->key.p);
+ free(reg);
+ }
+ return(ROFF_IGN);
+}
+
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);
+ name = cp;
+ namesz = roff_getname(r, &cp, ln, (int)(cp - *bufp));
+ roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
+ if ('\\' == name[namesz])
+ break;
}
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_IT_NONUM, r->parse,
+ ln, ppos, *bufp + 1);
+ return(ROFF_IGN);
+ }
+ cp += len + 1;
+
+ /* Arm the input line trap. */
+ roffit_lines = iv;
+ roffit_macro = mandoc_strdup(cp);
+ return(ROFF_IGN);
+}
+
static enum rofferr
roff_Dd(ROFF_ARGS)
{
const char *const *cp;
- if (MPARSE_MDOC != r->parsetype)
+ if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
for (cp = __mdoc_reserved; *cp; cp++)
roff_setstr(r, *cp, NULL, 0);
+ if (r->format == 0)
+ r->format = MPARSE_MDOC;
+
return(ROFF_CONT);
}
-/* ARGSUSED */
static enum rofferr
roff_TH(ROFF_ARGS)
{
const char *const *cp;
- if (MPARSE_MDOC != r->parsetype)
+ if ((r->options & MPARSE_QUICK) == 0)
for (cp = __man_reserved; *cp; cp++)
roff_setstr(r, *cp, NULL, 0);
+ 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);
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
+ ln, ppos, "TE");
else
tbl_end(&r->tbl);
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);
#endif
static void
-roff_openeqn(struct roff *r, const char *name, int line,
+roff_openeqn(struct roff *r, const char *name, int line,
int offs, const char *buf)
{
struct eqn_node *e;
}
}
-/* ARGSUSED */
static enum rofferr
roff_EQ(ROFF_ARGS)
{
return(ROFF_IGN);
}
-/* ARGSUSED */
static enum rofferr
roff_EN(ROFF_ARGS)
{
- mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
+ mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
return(ROFF_IGN);
}
-/* ARGSUSED */
static enum rofferr
roff_TS(ROFF_ARGS)
{
- struct tbl_node *t;
+ 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);
}
- t = tbl_alloc(ppos, ln, r->parse);
+ tbl = tbl_alloc(ppos, ln, r->parse);
if (r->last_tbl)
- r->last_tbl->next = t;
+ r->last_tbl->next = tbl;
else
- r->first_tbl = r->last_tbl = t;
+ r->first_tbl = r->last_tbl = tbl;
- r->tbl = r->last_tbl = t;
+ r->tbl = r->last_tbl = tbl;
return(ROFF_IGN);
}
-/* ARGSUSED */
static enum rofferr
roff_cc(ROFF_ARGS)
{
return(ROFF_IGN);
}
-/* ARGSUSED */
static enum rofferr
roff_tr(ROFF_ARGS)
{
if ('\\' == *first) {
esc = mandoc_escape(&p, NULL, NULL);
if (ESCAPE_ERROR == esc) {
- mandoc_msg
- (MANDOCERR_BADESCAPE, r->parse,
- ln, (int)(p - *bufp), NULL);
+ mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
+ ln, (int)(p - *bufp), first);
return(ROFF_IGN);
}
fsz = (size_t)(p - first);
if ('\\' == *second) {
esc = mandoc_escape(&p, NULL, NULL);
if (ESCAPE_ERROR == esc) {
- mandoc_msg
- (MANDOCERR_BADESCAPE, r->parse,
- ln, (int)(p - *bufp), NULL);
+ mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
+ ln, (int)(p - *bufp), second);
return(ROFF_IGN);
}
ssz = (size_t)(p - second);
} else if ('\0' == *second) {
- mandoc_msg(MANDOCERR_ARGCOUNT, r->parse,
- ln, (int)(p - *bufp), NULL);
+ mandoc_msg(MANDOCERR_ARGCOUNT, r->parse,
+ ln, (int)(p - *bufp), NULL);
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));
+ r->xtab = mandoc_calloc(128,
+ sizeof(struct roffstr));
free(r->xtab[(int)*first].p);
r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
return(ROFF_IGN);
}
-/* ARGSUSED */
static enum rofferr
roff_so(ROFF_ARGS)
{
char *name;
- mandoc_msg(MANDOCERR_SO, r->parse, ln, ppos, NULL);
+ name = *bufp + 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);
+ mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
+ ".so %s", name);
return(ROFF_ERR);
}
return(ROFF_SO);
}
-/* ARGSUSED */
static enum rofferr
roff_userdef(ROFF_ARGS)
{
/*
* Collect pointers to macro argument strings
- * and null-terminate them.
+ * and NUL-terminate them.
*/
cp = *bufp + pos;
for (i = 0; i < 9; i++)
cp += 2;
continue;
}
-
- *szp = strlen(n1) - 3 + strlen(arg[i]) + 1;
- n2 = mandoc_malloc(*szp);
-
- strlcpy(n2, n1, (size_t)(cp - n1 + 1));
- strlcat(n2, arg[i], *szp);
- strlcat(n2, cp + 3, *szp);
-
+ *cp = '\0';
+ *szp = mandoc_asprintf(&n2, "%s%s%s",
+ n1, arg[i], cp + 3) + 1;
cp = n2 + (cp - n1);
free(n1);
n1 = n2;
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);
}
/*
* 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)
{
roff_setstrn(&r->strtab, name, strlen(name), string,
- string ? strlen(string) : 0, multiline);
+ string ? strlen(string) : 0, append);
}
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';
roff_getstrn(const struct roff *r, const char *name, size_t len)
{
const struct roffkv *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])
+ 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(NULL);
}
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);
}
* 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.
*/
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
git.ckatri.com / mandoc.git / blobdiff