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/* dynlist.c: Dynamic lists and buffers in C.
* created 1999-Jan-06 15:34 jmk
* autodate: 2000-Mar-08 02:25
*
* by Jim Knoble <jmknoble@pobox.com>
* Copyright 1999 Jim Knoble
*
* Disclaimer:
*
* The software is provided "as is", without warranty of any kind,
* express or implied, including but not limited to the warranties of
* merchantability, fitness for a particular purpose and
* noninfringement. In no event shall the author(s) be liable for any
* claim, damages or other liability, whether in an action of
* contract, tort or otherwise, arising from, out of or in connection
* with the software or the use or other dealings in the software.
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "dynlist.h"
#define LIST_CHUNK_SIZE 512
#define BUF_CHUNK_SIZE 512
/* For lists of pointers cast to char *. */
int append_to_list(char ***list_ptr, int *list_len, int *i, char *item)
{
char **tmp_ptr;
if (*i >= *list_len)
{
*list_len += LIST_CHUNK_SIZE;
tmp_ptr = realloc(*list_ptr, (sizeof(**list_ptr) * *list_len));
if (NULL == tmp_ptr)
{
return(APPEND_FAILURE);
}
*list_ptr = tmp_ptr;
}
(*list_ptr)[*i] = item;
(*i)++;
return(APPEND_SUCCESS);
}
/* For single-dimensional buffers. */
int append_to_buf(char **buf, int *buflen, int *i, int c)
{
char *tmp_buf;
if (*i >= *buflen)
{
*buflen += BUF_CHUNK_SIZE;
tmp_buf = realloc(*buf, (sizeof(**buf) * *buflen));
if (NULL == tmp_buf)
{
return(APPEND_FAILURE);
}
*buf = tmp_buf;
#ifdef DEBUG
printf("-->Allocated buffer of size %d\n", *buflen);
#endif /* DEBUG */
}
(*buf)[*i] = (char) c;
(*i)++;
return(APPEND_SUCCESS);
}
int append_string_to_buf(char **buf, int *buflen, int *i, char *s)
{
int addlen;
int n;
char *tmp_buf;
n = strlen(s);
if (*i >= *buflen)
{
addlen = BUF_CHUNK_SIZE;
if (addlen <= n)
{
addlen = n + 1;
}
*buflen += addlen;
tmp_buf = realloc(*buf, (sizeof(**buf) * *buflen));
if (NULL == tmp_buf)
{
return(APPEND_FAILURE);
}
*buf = tmp_buf;
#ifdef DEBUG
printf("-->Allocated buffer of size %d\n", *buflen);
#endif /* DEBUG */
}
(*buf)[*i] = '\0';
strncat(*buf, s, n);
*i += n;
return(APPEND_SUCCESS);
}
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