/* * Copyright (C) 2003-2009 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); } g_string_set_size(buffer, length); g_strchomp(buffer->str); return buffer->str; }