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Large Pack of OldSkool DOS MOD Trackers
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goattracker_2.68.zip
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asm
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namedbuf.c
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C/C++ Source or Header
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2008-04-01
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3KB
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123 lines
/*
* Copyright (c) 2005 Magnus Lind.
*
* This software is provided 'as-is', without any express or implied warranty.
* In no event will the authors be held liable for any damages arising from
* the use of this software.
*
* Permission is granted to anyone to use this software, alter it and re-
* distribute it freely for any non-commercial, non-profit purpose subject to
* the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software in a
* product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not
* be misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any distribution.
*
* 4. The names of this software and/or it's copyright holders may not be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
*/
#include "namedbuf.h"
#include "log.h"
#include "vec.h"
#include "membufio.h"
#include <stdlib.h>
struct sbe
{
const char *name;
struct membuf mb[1];
};
static struct vec s_sbe_table[1];
static int sbe_cmp(const void *a, const void *b)
{
struct sbe *sbe_a;
struct sbe *sbe_b;
int val;
sbe_a = (struct sbe*)a;
sbe_b = (struct sbe*)b;
val = strcmp(sbe_a->name, sbe_b->name);
return val;
}
void sbe_free(struct sbe *e)
{
membuf_free(e->mb);
}
void named_buffer_init()
{
vec_init(s_sbe_table, sizeof(struct sbe));
}
void named_buffer_free()
{
typedef void cb_free(void *a);
vec_free(s_sbe_table, (cb_free*)sbe_free);
}
struct membuf *new_named_buffer(const char *name)
{
int pos;
struct sbe e[1];
struct sbe *ep;
struct membuf *mp;
/* name is already strdup:ped */
e->name = name;
pos = vec_find(s_sbe_table, sbe_cmp, e);
if(pos >= 0)
{
/* found */
LOG(LOG_ERROR, ("buffer already exists.\n"));
exit(-1);
}
membuf_init(e->mb);
ep = vec_insert(s_sbe_table, -(pos + 2), e);
mp = ep->mb;
return mp;
}
struct membuf *get_named_buffer(const char *name)
{
int pos;
struct sbe e[1];
struct sbe *ep;
struct membuf *mp;
/* name is already strdup:ped */
e->name = name;
pos = vec_find(s_sbe_table, sbe_cmp, e);
if(pos >= 0)
{
/* found */
ep = vec_get(s_sbe_table, pos);
}
else
{
membuf_init(e->mb);
read_file(name, e->mb);
ep = vec_insert(s_sbe_table, -(pos + 2), e);
}
mp = ep->mb;
return mp;
}