63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
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/*
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* Copyright (C) 2003-2009 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "text_file.h"
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#include <assert.h>
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#include <string.h>
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char *
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read_text_line(FILE *file, GString *buffer)
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{
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enum {
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max_length = 512 * 1024,
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step = 1024,
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};
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gsize length = 0, i;
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char *p;
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assert(file != NULL);
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assert(buffer != NULL);
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if (buffer->allocated_len < step)
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g_string_set_size(buffer, step);
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while (buffer->len < max_length) {
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p = fgets(buffer->str + length,
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buffer->allocated_len - length, file);
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if (p == NULL) {
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if (length == 0 || ferror(file))
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return NULL;
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break;
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}
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i = strlen(buffer->str + length);
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length += i;
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if (i < step - 1 || buffer->str[length - 1] == '\n')
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break;
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g_string_set_size(buffer, length + step);
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}
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g_string_set_size(buffer, length);
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g_strchomp(buffer->str);
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return buffer->str;
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}
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