119 lines
2.4 KiB
C
119 lines
2.4 KiB
C
/*
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* argvsplit.c
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* argv_split() routine
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*
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* Copyright (c) 2012 William Pitcock <nenolod@dereferenced.org>.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "pkg.h"
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void
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pkg_argv_free(char **argv)
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{
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free(argv[0]);
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free(argv);
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}
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int
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pkg_argv_split(const char *src, int *argc, char ***argv)
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{
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char *buf = malloc(strlen(src) + 1);
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const char *src_iter;
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char *dst_iter;
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int argc_count = 0;
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int argv_size = 5;
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char quote = 0;
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src_iter = src;
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dst_iter = buf;
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memset(buf, 0, strlen(src) + 1);
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*argv = calloc(sizeof (void *), argv_size);
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(*argv)[argc_count] = dst_iter;
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while (*src_iter)
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{
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if (quote == *src_iter)
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quote = 0;
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else if (quote)
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{
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if (*src_iter == '\\')
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{
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src_iter++;
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if (!*src_iter)
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{
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free(*argv);
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free(buf);
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return -1;
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}
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if (*src_iter != quote)
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*dst_iter++ = '\\';
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}
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*dst_iter++ = *src_iter;
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}
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else if (isspace(*src_iter))
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{
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if (*(src_iter + 1) == '-' && (*argv)[argc_count] != NULL)
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{
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argc_count++, dst_iter++;
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if (argc_count == argv_size)
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{
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argv_size += 5;
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*argv = realloc(*argv, sizeof(void *) * argv_size);
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}
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(*argv)[argc_count] = dst_iter;
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}
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}
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else switch(*src_iter)
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{
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case '"':
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case '\'':
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quote = *src_iter;
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break;
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case '\\':
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src_iter++;
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if (!*src_iter)
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{
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free(argv);
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free(buf);
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return -1;
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}
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default:
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*dst_iter++ = *src_iter;
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break;
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}
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src_iter++;
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}
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if (strlen((*argv)[argc_count])) {
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argc_count++;
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}
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*argc = argc_count;
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return 0;
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}
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