/* * 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_input_stream.h" #include "input_stream.h" #include "fifo_buffer.h" #include <glib.h> #include <string.h> struct text_input_stream { struct input_stream *is; struct fifo_buffer *buffer; char *line; }; struct text_input_stream * text_input_stream_new(struct input_stream *is) { struct text_input_stream *tis = g_new(struct text_input_stream, 1); tis->is = is; tis->buffer = fifo_buffer_new(4096); tis->line = NULL; return tis; } void text_input_stream_free(struct text_input_stream *tis) { fifo_buffer_free(tis->buffer); g_free(tis->line); g_free(tis); } const char * text_input_stream_read(struct text_input_stream *tis) { GError *error = NULL; void *dest; const char *src, *p; size_t length, nbytes; g_free(tis->line); tis->line = NULL; do { dest = fifo_buffer_write(tis->buffer, &length); if (dest != NULL) { nbytes = input_stream_lock_read(tis->is, dest, length, &error); if (nbytes > 0) fifo_buffer_append(tis->buffer, nbytes); else if (error != NULL) { g_warning("%s", error->message); g_error_free(error); return NULL; } } src = fifo_buffer_read(tis->buffer, &length); if (src == NULL) return NULL; p = memchr(src, '\n', length); } while (p == NULL); length = p - src + 1; while (p > src && g_ascii_isspace(p[-1])) --p; tis->line = g_strndup(src, p - src); fifo_buffer_consume(tis->buffer, length); return tis->line; }