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/* Copyright (C) 2010 Alexey Zakhlestin <indeyets@gmail.com>
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "php_midgard.h"
#include "php_midgard_urlwrapper.h"
static php_stream_ops php_midgard2stream_ops = {
php_midgard2stream_write,
php_midgard2stream_read,
php_midgard2stream_closer,
php_midgard2stream_flush,
PHP_MIDGARD2_STREAMTYPE,
php_midgard2stream_seek,
NULL,
NULL, // php_midgard2stream_stat,
NULL,
};
static php_stream_wrapper_ops php_midgard2stream_wrapper_ops = {
php_midgard2stream_opener,
NULL, /* will call underlying closer */
NULL,
NULL,
NULL,
PHP_MIDGARD2_WRAPPER,
NULL,
NULL,
NULL,
NULL,
};
static php_stream_wrapper php_midgard2stream_wrapper = {
&php_midgard2stream_wrapper_ops,
NULL,
0,
};
php_stream * php_midgard2stream_opener(php_stream_wrapper *wrapper, char *filename, char *mode, int options, char **opened_path, php_stream_context *context STREAMS_DC TSRMLS_DC)
{
if (strncmp(filename, PHP_MIDGARD2_WRAPPER "://", strlen(PHP_MIDGARD2_WRAPPER) + 3) != 0) {
php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "Invalid schema. midgard:// expected");
return NULL;
}
if (options & STREAM_OPEN_PERSISTENT) {
php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "Unable to open %s persistently", filename);
return NULL;
}
const char *path = filename + (strlen(PHP_MIDGARD2_WRAPPER) + 3);
// TODO: piotras says, that "MidgardQuerySelect in read only mode" can be used for speedup
php_midgard2stream_data *data = emalloc(sizeof(php_midgard2stream_data));
data->obj = midgard_schema_object_factory_get_object_by_path(mgd_handle(TSRMLS_C), "midgard_snippet", path);
data->position = 0;
if (data->obj == NULL) {
efree(data);
php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "Couldn't find midgard_snippet object using %s path", path);
return NULL;
}
if (mode[0] == 'w') {
data->buffer = NULL;
data->size = 0;
} else {
const gchar *tmp_string = NULL;
g_object_get(data->obj, "code", &tmp_string, NULL);
data->buffer = estrdup(tmp_string);
data->size = strlen(tmp_string);
if (mode[0] == 'a') {
data->position = data->size;
}
}
return php_stream_alloc(&php_midgard2stream_ops, data, 0, mode);
}
int php_midgard2stream_closer(php_stream *stream, int close_handle TSRMLS_DC)
{
php_midgard2stream_data *data = stream->abstract;
if (data->obj) {
g_object_unref(data->obj);
}
if (data->buffer) {
efree(data->buffer);
}
efree(data);
return 0;
}
size_t php_midgard2stream_write(php_stream *stream, const char *buf, size_t count TSRMLS_DC)
{
php_midgard2stream_data *data = stream->abstract;
size_t new_size = data->position + count + 1;
if (data->size < new_size) {
data->buffer = erealloc(data->buffer, new_size);
data->size = new_size;
}
memcpy(data->buffer + data->position, buf, count);
data->position += count;
data->buffer[data->position] = '\0';
return count;
}
size_t php_midgard2stream_read(php_stream *stream, char *buf, size_t count TSRMLS_DC)
{
php_midgard2stream_data *data = stream->abstract;
const char *tmp = data->buffer;
size_t to_read = count;
if (data->position + count > data->size) {
to_read = data->size - data->position;
}
memcpy(buf, tmp + data->position, to_read);
data->position += to_read;
return to_read;
}
int php_midgard2stream_flush(php_stream *stream TSRMLS_DC)
{
php_midgard2stream_data *data = stream->abstract;
{
GValue pval = {0, };
g_value_init(&pval, G_TYPE_STRING);
g_value_set_string(&pval, data->buffer);
g_object_set_property(G_OBJECT(data->obj), "code", &pval);
g_value_unset(&pval);
}
g_signal_emit(data->obj, MIDGARD_OBJECT_GET_CLASS(data->obj)->signal_action_update_hook, 0);
if (!midgard_object_update(data->obj)) {
// FIXME: do something more meaningful
php_error(E_WARNING, "failed to flush stream");
}
return 0;
}
int php_midgard2stream_seek(php_stream *stream, off_t offset, int whence, off_t *newoffset TSRMLS_DC)
{
php_midgard2stream_data *data = stream->abstract;
switch (whence) {
case SEEK_SET:
data->position = offset;
break;
case SEEK_CUR:
data->position += offset;
break;
case SEEK_END:
{
GValue pval = {0, };
g_value_init(&pval, G_TYPE_STRING);
g_object_get_property(G_OBJECT(data->obj), "code", &pval);
data->position = strlen(g_value_get_string(&pval)) + offset;
break;
}
}
if (data->position < 0) {
data->position = 0;
}
if (newoffset) {
*newoffset = data->position;
}
return 0;
}
// int php_midgard2stream_stat(php_stream *stream, php_stream_statbuf *ssb TSRMLS_DC)
// {
// return 0;
// }
PHP_MINIT_FUNCTION(midgard2_urlwrapper)
{
return php_register_url_stream_wrapper(PHP_MIDGARD2_WRAPPER, &php_midgard2stream_wrapper TSRMLS_CC);
}
PHP_MSHUTDOWN_FUNCTION(midgard2_urlwrapper)
{
return php_unregister_url_stream_wrapper(PHP_MIDGARD2_WRAPPER TSRMLS_CC);
}
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