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/*
* Copyright (C) 2003-2011 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "text_file.h"
#include <assert.h>
#include <string.h>
char *
read_text_line(FILE *file, GString *buffer)
{
enum {
max_length = 512 * 1024,
step = 1024,
};
gsize length = 0, i;
char *p;
assert(file != NULL);
assert(buffer != NULL);
if (buffer->allocated_len < step)
g_string_set_size(buffer, step);
while (buffer->len < max_length) {
p = fgets(buffer->str + length,
buffer->allocated_len - length, file);
if (p == NULL) {
if (length == 0 || ferror(file))
return NULL;
break;
}
i = strlen(buffer->str + length);
length += i;
if (i < step - 1 || buffer->str[length - 1] == '\n')
break;
g_string_set_size(buffer, length + step);
}
/* remove the newline characters */
if (buffer->str[length - 1] == '\n')
--length;
if (buffer->str[length - 1] == '\r')
--length;
g_string_set_size(buffer, length);
return buffer->str;
}
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