-/* $Id: roff.c,v 1.106 2010/12/02 10:53:03 kristaps Exp $ */
+/* $Id: roff.c,v 1.125 2011/02/06 20:36:36 kristaps Exp $ */
/*
- * Copyright (c) 2010 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2010 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2010, 2011 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
#include "mandoc.h"
#include "roff.h"
+#include "libroff.h"
#include "libmandoc.h"
#define RSTACK_MAX 128
#define ROFF_CTL(c) \
('.' == (c) || '\'' == (c))
-#if 1
-#define ROFF_DEBUG(fmt, args...) \
- do { /* Nothing. */ } while (/*CONSTCOND*/ 0)
-#else
-#define ROFF_DEBUG(fmt, args...) \
- do { fprintf(stderr, fmt , ##args); } while (/*CONSTCOND*/ 0)
-#endif
-
enum rofft {
ROFF_ad,
ROFF_am,
ROFF_ie,
ROFF_if,
ROFF_ig,
+ ROFF_it,
ROFF_ne,
ROFF_nh,
ROFF_nr,
+ ROFF_ns,
+ ROFF_ps,
ROFF_rm,
ROFF_so,
+ ROFF_ta,
ROFF_tr,
+ ROFF_TS,
+ ROFF_TE,
+ ROFF_T_,
+ ROFF_EQ,
+ ROFF_EN,
ROFF_cblock,
ROFF_ccond, /* FIXME: remove this. */
ROFF_USERDEF,
ROFFRULE_DENY
};
-
struct roffstr {
char *name; /* key of symbol */
char *string; /* current value */
struct regset *regs; /* read/writable registers */
struct roffstr *first_string; /* user-defined strings & macros */
const char *current_string; /* value of last called user macro */
+ struct tbl_node *first_tbl; /* first table parsed */
+ struct tbl_node *last_tbl; /* last table parsed */
+ struct tbl_node *tbl; /* current table being parsed */
+ struct eqn_node *last_eqn; /* last equation parsed */
+ struct eqn_node *first_eqn; /* first equation parsed */
+ struct eqn_node *eqn; /* current equation being parsed */
};
struct roffnode {
static enum rofferr roff_ds(ROFF_ARGS);
static enum roffrule roff_evalcond(const char *, int *);
static void roff_freestr(struct roff *);
+static char *roff_getname(struct roff *, char **, int, int);
static const char *roff_getstrn(const struct roff *,
const char *, size_t);
static enum rofferr roff_line_ignore(ROFF_ARGS);
-static enum rofferr roff_line_error(ROFF_ARGS);
static enum rofferr roff_nr(ROFF_ARGS);
static int roff_res(struct roff *,
char **, size_t *, int);
+static enum rofferr roff_rm(ROFF_ARGS);
static void roff_setstr(struct roff *,
const char *, const char *, int);
static enum rofferr roff_so(ROFF_ARGS);
+static enum rofferr roff_TE(ROFF_ARGS);
+static enum rofferr roff_TS(ROFF_ARGS);
+static enum rofferr roff_EQ(ROFF_ARGS);
+static enum rofferr roff_EN(ROFF_ARGS);
+static enum rofferr roff_T_(ROFF_ARGS);
static enum rofferr roff_userdef(ROFF_ARGS);
/* See roff_hash_find() */
{ "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 },
{ "ne", roff_line_ignore, NULL, NULL, 0, NULL },
{ "nh", roff_line_ignore, NULL, NULL, 0, NULL },
{ "nr", roff_nr, NULL, NULL, 0, NULL },
- { "rm", roff_line_error, NULL, NULL, 0, NULL },
+ { "ns", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "ps", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "rm", roff_rm, NULL, NULL, 0, NULL },
{ "so", roff_so, NULL, NULL, 0, NULL },
+ { "ta", roff_line_ignore, NULL, NULL, 0, NULL },
{ "tr", roff_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 },
{ ".", roff_cblock, NULL, NULL, 0, NULL },
{ "\\}", roff_ccond, NULL, NULL, 0, NULL },
{ NULL, roff_userdef, NULL, NULL, 0, NULL },
if (r->rstackpos > -1)
r->rstackpos--;
- ROFF_DEBUG("roff: popping scope\n");
r->last = r->last->parent;
free(p->name);
free(p->end);
static void
roff_free1(struct roff *r)
{
+ struct tbl_node *t;
+ struct eqn_node *e;
+
+ while (NULL != (t = r->first_tbl)) {
+ r->first_tbl = t->next;
+ tbl_free(t);
+ }
+
+ 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);
}
static int
roff_res(struct roff *r, char **bufp, size_t *szp, int pos)
{
- const char *cp, *cpp, *st, *res;
+ const char *stesc; /* start of an escape sequence ('\\') */
+ const char *stnam; /* start of the name, after "[(*" */
+ const char *cp; /* end of the name, e.g. before ']' */
+ const char *res; /* the string to be substituted */
int i, maxl;
size_t nsz;
char *n;
- /* LINTED */
- for (cp = &(*bufp)[pos]; (cpp = strstr(cp, "\\*")); cp++) {
- cp = cpp + 2;
+ /* Search for a leading backslash and save a pointer to it. */
+
+ cp = *bufp + pos;
+ while (NULL != (cp = strchr(cp, '\\'))) {
+ stesc = cp++;
+
+ /*
+ * 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 ('\0' == *cp)
+ return(1);
+ if ('*' != *cp++)
+ continue;
+
+ /*
+ * The third character decides the length
+ * of the name of the string.
+ * Save a pointer to the name.
+ */
+
switch (*cp) {
+ case ('\0'):
+ return(1);
case ('('):
cp++;
maxl = 2;
maxl = 1;
break;
}
+ stnam = cp;
- st = cp;
+ /* Advance to the end of the name. */
for (i = 0; 0 == maxl || i < maxl; i++, cp++) {
if ('\0' == *cp)
break;
}
- res = roff_getstrn(r, st, (size_t)i);
+ /*
+ * Retrieve the replacement string; if it is
+ * undefined, resume searching for escapes.
+ */
+
+ res = roff_getstrn(r, stnam, (size_t)i);
if (NULL == res) {
cp -= maxl ? 1 : 0;
continue;
}
- ROFF_DEBUG("roff: splicing reserved: [%.*s]\n", i, st);
+ /* Replace the escape sequence by the string. */
nsz = *szp + strlen(res) + 1;
n = mandoc_malloc(nsz);
- *n = '\0';
-
- strlcat(n, *bufp, (size_t)(cpp - *bufp + 1));
+ strlcpy(n, *bufp, (size_t)(stesc - *bufp + 1));
strlcat(n, res, nsz);
strlcat(n, cp + (maxl ? 0 : 1), nsz);
size_t *szp, int pos, int *offs)
{
enum rofft t;
+ enum rofferr e;
int ppos;
/*
* 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.
*/
if (r->last && ! ROFF_CTL((*bufp)[pos])) {
t = r->last->tok;
assert(roffs[t].text);
- ROFF_DEBUG("roff: intercept scoped text: %s, [%s]\n",
- roffs[t].name, &(*bufp)[pos]);
- return((*roffs[t].text)
- (r, t, bufp, szp,
- ln, pos, pos, offs));
- } else if ( ! ROFF_CTL((*bufp)[pos]))
+ 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, *offs));
+ if (r->tbl)
+ return(tbl_read(r->tbl, ln, *bufp, *offs));
return(ROFF_CONT);
+ } else if ( ! ROFF_CTL((*bufp)[pos])) {
+ if (r->eqn)
+ return(eqn_read(&r->eqn, ln, *bufp, *offs));
+ if (r->tbl)
+ return(tbl_read(r->tbl, ln, *bufp, *offs));
+ return(ROFF_CONT);
+ } else if (r->eqn)
+ return(eqn_read(&r->eqn, ln, *bufp, *offs));
/*
* If a scope is open, go to the child handler for that macro,
* as it may want to preprocess before doing anything with it.
+ * Don't do so if an equation is open.
*/
if (r->last) {
t = r->last->tok;
assert(roffs[t].sub);
- ROFF_DEBUG("roff: intercept scoped context: %s, [%s]\n",
- roffs[t].name, &(*bufp)[pos]);
return((*roffs[t].sub)
(r, t, bufp, szp,
ln, pos, pos, offs));
if (ROFF_MAX == (t = roff_parse(r, *bufp, &pos)))
return(ROFF_CONT);
- ROFF_DEBUG("roff: intercept new-scope: %s, [%s]\n",
- roffs[t].name, &(*bufp)[pos]);
assert(roffs[t].proc);
return((*roffs[t].proc)
(r, t, bufp, szp,
}
-int
+void
roff_endparse(struct roff *r)
{
- if (NULL == r->last)
- return(1);
- return((*r->msg)(MANDOCERR_SCOPEEXIT, r->data, r->last->line,
- r->last->col, NULL));
+ if (r->last)
+ (*r->msg)(MANDOCERR_SCOPEEXIT, r->data,
+ r->last->line, r->last->col, NULL);
+
+ if (r->eqn) {
+ (*r->msg)(MANDOCERR_SCOPEEXIT, r->data,
+ r->eqn->line, r->eqn->pos, NULL);
+ eqn_end(r->eqn);
+ r->eqn = NULL;
+ }
+
+ if (r->tbl) {
+ (*r->msg)(MANDOCERR_SCOPEEXIT, r->data,
+ r->tbl->line, r->tbl->pos, NULL);
+ tbl_end(r->tbl);
+ r->tbl = NULL;
+ }
}
*/
if (NULL == r->last) {
- if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL))
- return(ROFF_ERR);
+ (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL);
return(ROFF_IGN);
}
case (ROFF_am1):
/* FALLTHROUGH */
case (ROFF_de):
+ /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
/* FALLTHROUGH */
case (ROFF_dei):
/* FALLTHROUGH */
case (ROFF_ig):
break;
default:
- if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL))
- return(ROFF_ERR);
+ (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL);
return(ROFF_IGN);
}
if ((*bufp)[pos])
- if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL))
- return(ROFF_ERR);
+ (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL);
roffnode_pop(r);
roffnode_cleanscope(r);
{
if (NULL == r->last) {
- if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL))
- return(ROFF_ERR);
+ (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL);
return(ROFF_IGN);
}
case (ROFF_if):
break;
default:
- if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL))
- return(ROFF_ERR);
+ (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL);
return(ROFF_IGN);
}
if (r->last->endspan > -1) {
- if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL))
- return(ROFF_ERR);
+ (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL);
return(ROFF_IGN);
}
if ((*bufp)[pos])
- if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL))
- return(ROFF_ERR);
+ (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL);
roffnode_pop(r);
roffnode_cleanscope(r);
(*r->msg)(MANDOCERR_NOARGS, r->data, 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)
else
(*r->msg)(MANDOCERR_REQUEST, r->data, ln, ppos,
roffs[tok].name);
+
while ((*bufp)[pos] && ' ' != (*bufp)[pos])
pos++;
+
while (' ' == (*bufp)[pos])
(*bufp)[pos++] = '\0';
}
* with the same name, if there is one. New content will be
* added 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. */
+
sv = pos;
- while ((*bufp)[pos] && ' ' != (*bufp)[pos] &&
+ while ((*bufp)[pos] &&
+ ' ' != (*bufp)[pos] &&
'\t' != (*bufp)[pos])
pos++;
r->last->end[(int)sz] = '\0';
if ((*bufp)[pos])
- if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL))
- return(ROFF_ERR);
+ (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL);
return(ROFF_IGN);
}
roff_line_ignore(ROFF_ARGS)
{
- return(ROFF_IGN);
-}
-
-/* ARGSUSED */
-static enum rofferr
-roff_line_error(ROFF_ARGS)
-{
+ if (ROFF_it == tok)
+ (*r->msg)(MANDOCERR_REQUEST, r->data, ln, ppos, "it");
- (*r->msg)(MANDOCERR_REQUEST, r->data, ln, ppos, roffs[tok].name);
return(ROFF_IGN);
}
*/
if ('\0' == (*bufp)[pos] && sv != pos) {
- if ((*r->msg)(MANDOCERR_NOARGS, r->data, ln, ppos, NULL))
- return(ROFF_IGN);
- return(ROFF_ERR);
+ (*r->msg)(MANDOCERR_NOARGS, r->data, ln, ppos, NULL);
+ return(ROFF_IGN);
}
roffnode_push(r, tok, NULL, ln, ppos);
r->last->rule = rule;
- ROFF_DEBUG("roff: cond: %s -> %s\n", roffs[tok].name,
- ROFFRULE_ALLOW == rule ? "allow" : "deny");
-
if (ROFF_ie == tok) {
/*
* An if-else will put the NEGATION of the current
/* If the parent has false as its rule, then so do we. */
- if (r->last->parent && ROFFRULE_DENY == r->last->parent->rule) {
+ if (r->last->parent && ROFFRULE_DENY == r->last->parent->rule)
r->last->rule = ROFFRULE_DENY;
- ROFF_DEBUG("roff: cond override: %s -> deny\n",
- roffs[tok].name);
- }
/*
* Determine scope. If we're invoked with "\{" trailing the
if ('\\' == (*bufp)[pos] && '{' == (*bufp)[pos + 1]) {
r->last->endspan = -1;
pos += 2;
- ROFF_DEBUG("roff: cond-scope: %s, multi-line\n",
- roffs[tok].name);
- } else
- ROFF_DEBUG("roff: cond-scope: %s, one-line\n",
- roffs[tok].name);
+ }
/*
* If there are no arguments on the line, the next-line scope is
* will have `bar " ' as its value.
*/
- name = *bufp + pos;
+ string = *bufp + pos;
+ name = roff_getname(r, &string, ln, pos);
if ('\0' == *name)
return(ROFF_IGN);
- string = name;
- /* Read until end of name. */
- while (*string && ' ' != *string)
- string++;
-
- /* Nil-terminate name. */
- if (*string)
- *(string++) = '\0';
-
- /* Read past spaces. */
- while (*string && ' ' == *string)
- string++;
-
- /* Read passed initial double-quote. */
- if (*string && '"' == *string)
+ /* Read past initial double-quote. */
+ if ('"' == *string)
string++;
/* The rest is the value. */
static enum rofferr
roff_nr(ROFF_ARGS)
{
- const char *key, *val;
+ const char *key;
+ char *val;
struct reg *rg;
- key = &(*bufp)[pos];
+ val = *bufp + pos;
+ key = roff_getname(r, &val, ln, pos);
rg = r->regs->regs;
- /* Parse register request. */
- while ((*bufp)[pos] && ' ' != (*bufp)[pos])
- pos++;
+ if (0 == strcmp(key, "nS")) {
+ rg[(int)REG_nS].set = 1;
+ if ( ! roff_parse_nat(val, &rg[(int)REG_nS].v.u))
+ rg[(int)REG_nS].v.u = 0;
+ }
- /*
- * Set our nil terminator. Because this line is going to be
- * ignored anyway, we can munge it as we please.
- */
- if ((*bufp)[pos])
- (*bufp)[pos++] = '\0';
+ return(ROFF_IGN);
+}
- /* Skip whitespace to register token. */
- while ((*bufp)[pos] && ' ' == (*bufp)[pos])
- pos++;
+/* ARGSUSED */
+static enum rofferr
+roff_rm(ROFF_ARGS)
+{
+ const char *name;
+ char *cp;
- val = &(*bufp)[pos];
+ cp = *bufp + pos;
+ while ('\0' != *cp) {
+ name = roff_getname(r, &cp, ln, cp - *bufp);
+ if ('\0' != *name)
+ roff_setstr(r, name, NULL, 0);
+ }
+ return(ROFF_IGN);
+}
- /* Process register token. */
+/* ARGSUSED */
+static enum rofferr
+roff_TE(ROFF_ARGS)
+{
- if (0 == strcmp(key, "nS")) {
- rg[(int)REG_nS].set = 1;
- if ( ! roff_parse_nat(val, &rg[(int)REG_nS].v.u))
- rg[(int)REG_nS].v.u = 0;
+ if (NULL == r->tbl)
+ (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL);
+ else
+ tbl_end(r->tbl);
- ROFF_DEBUG("roff: register nS: %u\n",
- rg[(int)REG_nS].v.u);
- } else
- ROFF_DEBUG("roff: ignoring register: %s\n", key);
+ r->tbl = NULL;
+ return(ROFF_IGN);
+}
+
+/* ARGSUSED */
+static enum rofferr
+roff_T_(ROFF_ARGS)
+{
+
+ if (NULL == r->tbl)
+ (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL);
+ else
+ tbl_restart(ppos, ln, r->tbl);
+
+ return(ROFF_IGN);
+}
+
+/* ARGSUSED */
+static enum rofferr
+roff_EQ(ROFF_ARGS)
+{
+ struct eqn_node *e;
+
+ assert(NULL == r->eqn);
+ e = eqn_alloc(ppos, ln);
+
+ if (r->last_eqn)
+ r->last_eqn->next = e;
+ else
+ r->first_eqn = r->last_eqn = e;
+
+ r->eqn = r->last_eqn = e;
+ return(ROFF_IGN);
+}
+
+/* ARGSUSED */
+static enum rofferr
+roff_EN(ROFF_ARGS)
+{
+
+ (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL);
+ return(ROFF_IGN);
+}
+
+/* ARGSUSED */
+static enum rofferr
+roff_TS(ROFF_ARGS)
+{
+ struct tbl_node *t;
+
+ if (r->tbl) {
+ (*r->msg)(MANDOCERR_SCOPEBROKEN, r->data, ln, ppos, NULL);
+ tbl_end(r->tbl);
+ }
+
+ t = tbl_alloc(ppos, ln, r->data, r->msg);
+ if (r->last_tbl)
+ r->last_tbl->next = t;
+ else
+ r->first_tbl = r->last_tbl = t;
+
+ r->tbl = r->last_tbl = t;
return(ROFF_IGN);
}
{
const char *arg[9];
char *cp, *n1, *n2;
- int i, quoted, pairs;
+ int i;
/*
* Collect pointers to macro argument strings
* and null-terminate them.
*/
cp = *bufp + pos;
- for (i = 0; i < 9; i++) {
- /* Quoting can only start with a new word. */
- if ('"' == *cp) {
- quoted = 1;
- cp++;
- } else
- quoted = 0;
- arg[i] = cp;
- for (pairs = 0; '\0' != *cp; cp++) {
- /* Unquoted arguments end at blanks. */
- if (0 == quoted) {
- if (' ' == *cp)
- break;
- continue;
- }
- /* After pairs of quotes, move left. */
- if (pairs)
- cp[-pairs] = cp[0];
- /* Pairs of quotes do not end words, ... */
- if ('"' == cp[0] && '"' == cp[1]) {
- pairs++;
- cp++;
- continue;
- }
- /* ... but solitary quotes do. */
- if ('"' != *cp)
- continue;
- if (pairs)
- cp[-pairs] = '\0';
- *cp = ' ';
- break;
- }
- /* Last argument; the remaining ones are empty strings. */
- if ('\0' == *cp)
- continue;
- /* Null-terminate argument and move to the next one. */
- *cp++ = '\0';
- while (' ' == *cp)
- cp++;
- }
+ for (i = 0; i < 9; i++)
+ arg[i] = '\0' == *cp ? "" :
+ mandoc_getarg(&cp, r->msg, r->data, ln, &pos);
/*
* Expand macro arguments.
ROFF_REPARSE : ROFF_APPEND);
}
+static char *
+roff_getname(struct roff *r, char **cpp, int ln, int pos)
+{
+ char *name, *cp;
+
+ name = *cpp;
+ if ('\0' == *name)
+ return(name);
+
+ /* Read until end of name. */
+ for (cp = name; '\0' != *cp && ' ' != *cp; cp++) {
+ if ('\\' != *cp)
+ continue;
+ cp++;
+ if ('\\' == *cp)
+ continue;
+ (*r->msg)(MANDOCERR_NAMESC, r->data, ln, pos, NULL);
+ *cp = '\0';
+ name = cp;
+ }
+
+ /* Nil-terminate name. */
+ if ('\0' != *cp)
+ *(cp++) = '\0';
+
+ /* Read past spaces. */
+ while (' ' == *cp)
+ cp++;
+
+ *cpp = cp;
+ return(name);
+}
+
/*
* Store *string into the user-defined string called *name.
* In multiline mode, append to an existing entry and append '\n';
*c = '\0';
}
-
static const char *
roff_getstrn(const struct roff *r, const char *name, size_t len)
{
return(n ? n->string : NULL);
}
-
static void
roff_freestr(struct roff *r)
{
r->first_string = 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);
+}
git.ckatri.com / mandoc.git / blobdiff