-/* $Id: roff.c,v 1.92 2010/07/03 16:02:12 schwarze Exp $ */
+/* $Id: roff.c,v 1.94 2010/07/07 15:04:54 kristaps Exp $ */
/*
* Copyright (c) 2010 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2010 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 <stdio.h>
#include "mandoc.h"
-#include "regs.h"
#include "roff.h"
+#include "libmandoc.h"
#define RSTACK_MAX 128
ROFFRULE_DENY
};
+
+struct roffstr {
+ char *name; /* key of symbol */
+ char *string; /* current value */
+ struct roffstr *next; /* next in list */
+};
+
struct roff {
struct roffnode *last; /* leaf of stack */
mandocmsg msg; /* err/warn/fatal messages */
enum roffrule rstack[RSTACK_MAX]; /* stack of !`ie' rules */
int rstackpos; /* position in rstack */
struct regset *regs; /* read/writable registers */
+ struct roffstr *first_string;
};
struct roffnode {
struct roffmac *next;
};
-struct roffstr {
- char *name;
- char *string;
- struct roffstr *next;
-} *first_string;
-
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_cond_text(ROFF_ARGS);
static enum rofferr roff_cond_sub(ROFF_ARGS);
static enum rofferr roff_ds(ROFF_ARGS);
+static enum roffrule roff_evalcond(const char *, int *);
+static void roff_freestr(struct roff *);
+static const char *roff_getstrn(const struct roff *,
+ const char *, size_t);
static enum rofferr roff_line(ROFF_ARGS);
static enum rofferr roff_nr(ROFF_ARGS);
-static enum roffrule roff_evalcond(const char *, int *);
+static int roff_res(struct roff *, int,
+ char **, size_t *, int, int *);
+static void roff_setstr(struct roff *,
+ const char *, const char *);
/* See roff_hash_find() */
while (r->last)
roffnode_pop(r);
- roff_freestr();
+ roff_freestr(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.
+ */
+static int
+roff_res(struct roff *r, int ln, char **bufp,
+ size_t *szp, int pos, int *offs)
+{
+ const char *cp, *cpp, *st, *res;
+ int i, maxl;
+ size_t nsz;
+ char *n;
+
+ for (cp = &(*bufp)[pos]; (cpp = strstr(cp, "\\*")); cp++) {
+ cp = cpp + 2;
+ switch (*cp) {
+ case ('('):
+ cp++;
+ maxl = 2;
+ break;
+ case ('['):
+ cp++;
+ maxl = 0;
+ break;
+ default:
+ maxl = 1;
+ break;
+ }
+
+ st = cp;
+
+ for (i = 0; 0 == maxl || i < maxl; i++, cp++) {
+ if ('\0' == *cp)
+ return(1); /* Error. */
+ if (0 == maxl && ']' == *cp)
+ break;
+ }
+
+ res = roff_getstrn(r, st, (size_t)i);
+
+ if (NULL == res) {
+ cp -= maxl ? 1 : 0;
+ continue;
+ }
+
+ ROFF_DEBUG("roff: splicing reserved: [%.*s]\n", i, st);
+
+ nsz = *szp + strlen(res) + 1;
+ n = mandoc_malloc(nsz);
+
+ *n = '\0';
+
+ strlcat(n, *bufp, (size_t)(cpp - *bufp + 1));
+ strlcat(n, res, nsz);
+ strlcat(n, cp + (maxl ? 0 : 1), nsz);
+
+ free(*bufp);
+
+ *bufp = n;
+ *szp = nsz;
+ return(0);
+ }
+
+ return(1);
+}
+
+
enum rofferr
roff_parseln(struct roff *r, int ln, char **bufp,
size_t *szp, int pos, int *offs)
enum rofft t;
int ppos;
+ /*
+ * Run the reserved-word filter only if we have some reserved
+ * words to fill in.
+ */
+
+ if (r->first_string && ! roff_res(r, ln, bufp, szp, pos, offs))
+ return(ROFF_RERUN);
+
/*
* 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
return((*roffs[t].text)
(r, t, bufp, szp,
ln, pos, pos, offs));
- } else if ( ! ROFF_CTL((*bufp)[pos])) {
- ROFF_DEBUG("roff: pass non-scoped text: [%s]\n",
- &(*bufp)[pos]);
+ } else if ( ! ROFF_CTL((*bufp)[pos]))
return(ROFF_CONT);
- }
/*
* If a scope is open, go to the child handler for that macro,
*/
ppos = pos;
- if (ROFF_MAX == (t = roff_parse(*bufp, &pos))) {
- ROFF_DEBUG("roff: pass non-scoped non-macro: [%s]\n",
- &(*bufp)[pos]);
+ if (ROFF_MAX == (t = roff_parse(*bufp, &pos)))
return(ROFF_CONT);
- }
ROFF_DEBUG("roff: intercept new-scope: %s, [%s]\n",
roffs[t].name, &(*bufp)[pos]);
*end = '\0';
}
- roff_setstr(name, string);
+ roff_setstr(r, name, string);
return(ROFF_IGN);
}
}
-char *
-roff_setstr(const char *name, const char *string)
+static void
+roff_setstr(struct roff *r, const char *name, const char *string)
{
struct roffstr *n;
char *namecopy;
- n = first_string;
+ n = r->first_string;
while (n && strcmp(name, n->name))
n = n->next;
- if (n) {
- free(n->string);
- } else {
- if (NULL == (namecopy = strdup(name)))
- return(NULL);
- if (NULL == (n = malloc(sizeof(struct roffstr)))) {
- free(n);
- return(NULL);
- }
- n->name = namecopy;
- n->next = first_string;
- first_string = n;
- }
- if (string)
- n->string = strdup(string);
- else
- n->string = NULL;
- return(n->string);
-}
-char *
-roff_getstr(const char *name)
-{
- struct roffstr *n;
+ if (NULL == n) {
+ namecopy = mandoc_strdup(name);
+ n = mandoc_malloc(sizeof(struct roffstr));
+ n->name = namecopy;
+ n->next = r->first_string;
+ r->first_string = n;
+ } else
+ free(n->string);
- n = first_string;
- while (n && strcmp(name, n->name))
- n = n->next;
- if (n)
- return(n->string);
- else
- return(NULL);
+ n->string = string ? strdup(string) : NULL;
}
-char *
-roff_getstrn(const char *name, size_t len)
+
+static const char *
+roff_getstrn(const struct roff *r, const char *name, size_t len)
{
- struct roffstr *n;
+ const struct roffstr *n;
- n = first_string;
+ n = r->first_string;
while (n && (strncmp(name, n->name, len) || '\0' != n->name[len]))
n = n->next;
- if (n)
- return(n->string);
- else
- return(NULL);
+
+ return(n ? n->string : NULL);
}
-void
-roff_freestr(void)
+
+static void
+roff_freestr(struct roff *r)
{
struct roffstr *n, *nn;
- for (n = first_string; n; n = nn) {
+ for (n = r->first_string; n; n = nn) {
free(n->name);
free(n->string);
nn = n->next;
free(n);
}
- first_string = NULL;
+
+ r->first_string = NULL;
}
git.ckatri.com / mandoc.git / blobdiff