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/* $Id$ */
/*
* Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the
* above copyright notice and this permission notice appear in all
* copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdlib.h>
#include "roff.h"
static int
macro_args_next(struct rofftree *tree, int *pos, char *buf, char **v)
{
int i;
if (0 == buf[*pos])
return(0);
if ('\"' == buf[*pos]) {
/* Syntax error: quotation marks not allowed. */
return(-1);
}
*v = &buf[*pos];
while (buf[*pos] && ! isspace(buf[*pos]))
(*pos)++;
if (buf[*pos + 1] && '\\' == buf[*pos]) {
/* Syntax error: escaped whitespace not allowed. */
return(-1);
}
buf[i] = 0;
return(1);
}
/*
* Parses the following:
*
* .Xx foo bar baz ; foo "bar baz" ; ;
* ^---------- ^----------
*/
static int
macro_fl(struct rofftree *tree, int tok, int *pos, char *buf)
{
int i, j, c, first;
char *args[ROFF_MAXLINEARG];
first = *pos == 0;
for (j = 0; ; ) {
i = *pos;
c = macro_args_next(tree, *i, buf, args[j]);
if (-1 == c)
return(0);
if (0 == c)
break;
/* Break at the next command. */
if (ROFF_MAX != (c = rofffindcallable(args[pos]))) {
if ( ! macro(tree, tok, argc, argv, i, p))
return(0);
if ( ! parse(tree, c, pos, args))
return(0);
break;
}
/* Continue if we're just words. */
if ( ! roffispunct(args[pos])) {
i++;
continue;
}
/* Break if there's only remaining punctuation. */
if (args[pos + 1] && roffispunct(args[pos + 1]))
break;
/* If there are remaining words, start anew. */
if ( ! macro(tree, tok, argc, argv, i, p))
return(0);
/* Spit out the punctuation. */
if ( ! word(tree, tok, *args++))
return(0);
i++;
}
}
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