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/* $Id: man_argv.c,v 1.2 2010/01/01 17:14:28 kristaps Exp $ */
/*
* Copyright (c) 2008, 2009 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/types.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "libman.h"
int
man_args(struct man *m, int line, int *pos, char *buf, char **v)
{
assert(*pos);
assert(' ' != buf[*pos]);
if (0 == buf[*pos])
return(ARGS_EOLN);
*v = &buf[*pos];
/*
* Process a quoted literal. A quote begins with a double-quote
* and ends with a double-quote NOT preceded by a double-quote.
* Whitespace is NOT involved in literal termination.
*/
if ('\"' == buf[*pos]) {
*v = &buf[++(*pos)];
for ( ; buf[*pos]; (*pos)++) {
if ('\"' != buf[*pos])
continue;
if ('\"' != buf[*pos + 1])
break;
(*pos)++;
}
if (0 == buf[*pos]) {
if ( ! man_pwarn(m, line, *pos, WTQUOTE))
return(ARGS_ERROR);
return(ARGS_QWORD);
}
buf[(*pos)++] = 0;
if (0 == buf[*pos])
return(ARGS_QWORD);
while (' ' == buf[*pos])
(*pos)++;
if (0 == buf[*pos])
if ( ! man_pwarn(m, line, *pos, WTSPACE))
return(ARGS_ERROR);
return(ARGS_QWORD);
}
/*
* A non-quoted term progresses until either the end of line or
* a non-escaped whitespace.
*/
for ( ; buf[*pos]; (*pos)++)
if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
break;
if (0 == buf[*pos])
return(ARGS_WORD);
buf[(*pos)++] = 0;
while (' ' == buf[*pos])
(*pos)++;
if (0 == buf[*pos])
if ( ! man_pwarn(m, line, *pos, WTSPACE))
return(ARGS_ERROR);
return(ARGS_WORD);
}
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