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