LookingGlass/common/src/stringlist.c

80 lines
1.9 KiB
C

/**
* Looking Glass
* Copyright (C) 2017-2021 The Looking Glass Authors
* https://looking-glass.io
*
* 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; either version 2 of the License, or (at your option)
* any later version.
*
* This program 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 "common/stringlist.h"
#include <stdlib.h>
struct StringList
{
bool owns_strings;
unsigned int size;
unsigned int count;
char ** list;
};
StringList stringlist_new(bool owns_strings)
{
StringList sl = malloc(sizeof(struct StringList));
sl->owns_strings = owns_strings;
sl->size = 32;
sl->count = 0;
sl->list = malloc(sizeof(char *) * sl->size);
return sl;
}
void stringlist_free(StringList * sl)
{
if ((*sl)->owns_strings)
for(unsigned int i = 0; i < (*sl)->count; ++i)
free((*sl)->list[i]);
free((*sl)->list);
free((*sl));
*sl = NULL;
}
int stringlist_push (StringList sl, char * str)
{
if (sl->count == sl->size)
{
sl->size += 32;
sl->list = realloc(sl->list, sizeof(char *) * sl->size);
}
unsigned int index = sl->count;
sl->list[sl->count++] = str;
return index;
}
unsigned int stringlist_count(StringList sl)
{
return sl->count;
}
char * stringlist_at(StringList sl, unsigned int index)
{
if (index >= sl->count)
return NULL;
return sl->list[index];
}