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/* argvfactory.c - Creating argv vectors
* Copyright (C) 1999 Michael Roth <mroth@gnupg.org>
*
* This file is part of pgpgpg.
*
* pgpgpg 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; either version 2 of the License, or
* (at your option) any later version.
*
* pgpgpg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include "includes.h"
#include "argvfactory.h"
/*****************************************************************************
*
* Function : argv_factory_init
*
* Purpose : Initializes an ArgvFactory structure
*
* Input : af - A pointer to an uninitialized ArgvFactory structure to
* initialize.
*
*****************************************************************************/
void argv_factory_init(ArgvFactory *af)
{
assert(af != NULL);
af->size = 64;
af->used = 0;
af->argv = (char **)malloc(af->size * sizeof(char *));
assert(af->argv != NULL);
*af->argv = NULL;
}
/*****************************************************************************
*
* Function : argv_factory_release
*
* Purpose : Releases all memory associated with an ArgvFactory structure.
*
* Input : af - A pointer to the ArgvFactory structure to release.
*
* Notes : Don't use `af' after releasing.
*
*****************************************************************************/
void argv_factory_release(ArgvFactory *af)
{
assert(af != NULL);
assert(af->argv != NULL);
assert(af->used+1 <= af->size);
assert(af->argv[af->used] == NULL);
/* FIXME: Free the strings in the argv vector !!! */
free(af->argv);
}
/*****************************************************************************
*
* Function : argv_factory_add
*
* Purpose : Adds a argument to the argv vector managed by a ArgvFactory
* structure.
*
* Input : af - A pointer to an ArgvFactory which manages an argv vector.
* arg - The string to add to the argv vector managed by an
* ArgvFactory. The string will be duplicated.
*
* Notes : You could reuse or free the memory pointed to by `arg' after the
* call to argv_factory_add().
*
*****************************************************************************/
void argv_factory_add(ArgvFactory *af, char *arg)
{
assert(af != NULL);
assert(af->argv != NULL);
assert(af->used+1 <= af->size);
assert(af->argv[af->used] == NULL);
assert(arg != NULL);
if (af->used + 1 == af->size)
{
af->size *= 2;
af->argv = realloc(af->argv, af->size * sizeof(char *));
assert(af->argv != NULL);
}
af->argv[af->used++] = strdup(arg);
af->argv[af->used] = NULL;
assert(af->argv[af->used-1]);
}
/*****************************************************************************
*
* Function : argv_factory_append
*
* Purpose : Concatenate a second argv vector managed by an ArgvFactory to the
* first argv vector managed by an ArgvFactory structure.
*
* Input : dest - The ArgvFactory to which the `src' ArgvFactorys argv vector
* will be appended.
* src - The ArgvFactory which manage the argv vector which will be
* appended to the `dest' ArgvFactory argv vector. The strings
* in the `src' ArgvFactory argv vector will be duplicated.
*
* Notes : You can reuse or free the ArgvFactory `src' after a call to
* argv_factory_append().
*
*****************************************************************************/
void argv_factory_append(ArgvFactory *dest, ArgvFactory *src)
{
char **argv;
assert(dest != NULL);
assert(dest->argv != NULL);
assert(dest->used+1 <= dest->size);
assert(dest->argv[dest->used] == NULL);
assert(src != NULL);
assert(src->argv != NULL);
assert(src->used+1 <= src->size);
assert(src->argv[src->used] == NULL);
for (argv=src->argv; *argv; ++argv)
{
if (dest->used + 1 == dest->size)
{
dest->used *= 2;
dest->argv = realloc(dest->argv, dest->size * sizeof(char *));
assert(dest->argv != NULL);
}
dest->argv[dest->used++] = strdup(*argv);
dest->argv[dest->used] = NULL;
assert(dest->argv[dest->used-1]);
}
}
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