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/* ----------------------------------------------------------------------- *
*
* args.c - argument vector handling.
*
* Copyright 2006 Ian Kent <raven@themaw.net> - All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, Inc., 675 Mass Ave, Cambridge MA 02139,
* USA; either version 2 of the License, or (at your option) any later
* version; incorporated herein by reference.
*
* ----------------------------------------------------------------------- */
#include <stdlib.h>
#include <string.h>
#include "automount.h"
/*
* Add entry to arg vector - argc is new arg vector size
* NOTE: this outine will free the passed in argv vector
* upon success.
*/
char **add_argv(int argc, char **argv, char *str)
{
char **vector;
size_t vector_size;
int i;
vector_size = (argc + 1) * sizeof(char *);
vector = (char **) malloc(vector_size);
if (!vector)
return NULL;
for (i = 0; i < argc - 1; i++) {
if (argv[i]) {
vector[i] = strdup(argv[i]);
if (!vector[i]) {
logerr("failed to strdup arg");
break;
}
} else
vector[i] = NULL;
}
if (i < argc - 1) {
free_argv(argc - 1, (const char **) vector);
return NULL;
}
vector[argc - 1] = strdup(str);
if (!vector[argc - 1]) {
free_argv(argc - 1, (const char **) vector);
return NULL;
}
vector[argc] = NULL;
free_argv(argc - 1, (const char **) argv);
return vector;
}
char **append_argv(int argc1, char **argv1, int argc2, char **argv2)
{
char **vector;
size_t vector_size;
int len, i, j;
len = argc1 + argc2;
vector_size = (len + 1) * sizeof(char *);
vector = (char **) realloc(argv1, vector_size);
if (!vector) {
free_argv(argc1, (const char **) argv1);
free_argv(argc2, (const char **) argv2);
return NULL;
}
for (i = argc1, j = 0; i <= len; i++, j++) {
if (argv2[j]) {
vector[i] = strdup(argv2[j]);
if (!vector[i]) {
logerr("failed to strdup arg");
break;
}
} else
vector[i] = NULL;
}
if (i < len) {
free_argv(len, (const char **) vector);
free_argv(argc2, (const char **) argv2);
return NULL;
}
vector[len] = NULL;
free_argv(argc2, (const char **) argv2);
return vector;
}
const char **copy_argv(int argc, const char **argv)
{
char **vector;
size_t vector_size;
int i;
vector_size = (argc + 1) * sizeof(char *);
vector = (char **) malloc(vector_size);
if (!vector)
return NULL;
for (i = 0; i < argc; i++) {
if (argv[i]) {
vector[i] = strdup(argv[i]);
if (!vector[i]) {
logerr("failed to strdup arg");
break;
}
} else
vector[i] = NULL;
}
if (i < argc) {
free_argv(argc, (const char **) vector);
return NULL;
}
vector[argc] = NULL;
return (const char **) vector;
}
static int compare(const char *s1, const char *s2)
{
int res = 0;
if (s1) {
if (!s2)
goto done;
if (strcmp(s1, s2))
goto done;
} else if (s2)
goto done;
res = 1;
done:
return res;
}
int compare_argv(int argc1, const char **argv1, int argc2, const char **argv2)
{
int res = 1;
int i, val;
if (argc1 != argc2)
return 0;
i = 0;
while (i < argc1) {
val = compare(argv1[i], argv2[i]);
if (!val) {
res = 0;
break;
}
i++;
}
return res;
}
int free_argv(int argc, const char **argv)
{
char **vector = (char **) argv;
int i;
if (!argc) {
if (vector)
free(vector);
return 1;
}
for (i = 0; i < argc; i++) {
if (vector[i])
free(vector[i]);
}
free(vector);
return 1;
}
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