-/* $Id: roff.c,v 1.266 2015/04/19 13:50:26 schwarze Exp $ */
+/* $Id: roff.c,v 1.273 2015/08/29 20:26:04 schwarze Exp $ */
/*
- * Copyright (c) 2009-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2010-2015 Ingo Schwarze <schwarze@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
#include "libmandoc.h"
#include "roff_int.h"
#include "libroff.h"
-#include "libmdoc.h"
/* Maximum number of nested if-else conditionals. */
#define RSTACK_MAX 128
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 */
};
static enum rofferr roff_cond_sub(ROFF_ARGS);
static enum rofferr roff_ds(ROFF_ARGS);
static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
-static int roff_evalcond(struct roff *r, int,
- const char *, 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,
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 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);
/* NOTREACHED */
}
n->parent->nchild++;
+ n->parent->last = n;
/*
* Copy over the normalised-data pointer of our parent. Not
man->last = n;
}
+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);
+ if (man->macroset == MACROSET_MDOC)
+ mdoc_valid_post(man);
+ else
+ man_valid_post(man);
+ 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)
{
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 |= MDOC_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);
+ if (man->macroset == MACROSET_MDOC)
+ mdoc_valid_post(man);
+ else
+ man_valid_post(man);
+ man->next = ROFF_NEXT_SIBLING;
+}
+
void
roff_node_unlink(struct roff_man *man, struct roff_node *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 and escape sequences. */
+
+ cp = n->string;
+ while (*cp != '\0') {
+ if ('\\' == *cp) {
+ cp++;
+ mandoc_escape((const char **)&cp, NULL, NULL);
+ } else if (isspace((unsigned char)*cp))
+ cp++;
+ else
+ break;
+ }
+
+ /* Skip trailing whitespace. */
+
+ for (sz = strlen(cp); 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 ---------------------------------- */
/*
* or string condition.
*/
static int
-roff_evalcond(struct roff *r, int ln, const char *v, int *pos)
+roff_evalcond(struct roff *r, int ln, char *v, int *pos)
{
+ char *cp, *name;
+ size_t sz;
int number, savepos, wanttrue;
if ('!' == v[*pos]) {
/* FALLTHROUGH */
case 'e':
/* FALLTHROUGH */
- case 'r':
- /* FALLTHROUGH */
case 't':
/* FALLTHROUGH */
case 'v':
(*pos)++;
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:
break;
}
if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
r->last->endspan = -1;
pos += 2;
+ while (buf->buf[pos] == ' ')
+ pos++;
goto out;
}
* 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 '$': /* 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. */
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);
}
int val;
if ('.' == name[0] && 2 == len) {
- val = roff_getregro(name + 1);
+ val = roff_getregro(r, name + 1);
if (-1 != val)
return (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(1);
+ }
+
+ for (reg = r->regtab; reg; reg = reg->next)
+ if (len == reg->key.sz &&
+ 0 == strncmp(name, reg->key.p, len))
+ return(1);
+
+ return(0);
+}
+
static void
roff_freereg(struct roffreg *reg)
{
* and NUL-terminate them.
*/
+ r->argc = 0;
cp = buf->buf + pos;
- for (i = 0; i < 9; i++)
- arg[i] = *cp == '\0' ? "" :
- mandoc_getarg(r->parse, &cp, ln, &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.
git.ckatri.com / mandoc.git / blobdiff