b225eba20f
* NEW: Update copyright year in all source files. git-svn-id: svn://localhost/gambas/trunk@8056 867c0c6c-44f3-4631-809d-bfa615b0a4ec
146 lines
2.9 KiB
C
146 lines
2.9 KiB
C
/***************************************************************************
|
|
|
|
gbx_stream_string.c
|
|
|
|
(c) 2000-2017 Benoît Minisini <gambas@users.sourceforge.net>
|
|
|
|
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, 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.
|
|
|
|
***************************************************************************/
|
|
|
|
#define __STREAM_IMPL_C
|
|
|
|
#include "gb_common.h"
|
|
#include "gb_common_check.h"
|
|
#include "gb_error.h"
|
|
#include "gbx_value.h"
|
|
#include "gb_limit.h"
|
|
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <setjmp.h>
|
|
|
|
#include "gbx_string.h"
|
|
#include "gbx_stream.h"
|
|
|
|
|
|
static int stream_open(STREAM *stream, const char *path, int mode)
|
|
{
|
|
stream->string.buffer = NULL;
|
|
stream->common.available_now = TRUE;
|
|
stream->string.size = 0;
|
|
stream->string.pos = 0;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static int stream_close(STREAM *stream)
|
|
{
|
|
STRING_unref(&stream->string.buffer);
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static int stream_read(STREAM *stream, char *buffer, int len)
|
|
{
|
|
bool strip = FALSE;
|
|
int max;
|
|
|
|
max = stream->string.size - stream->string.pos;
|
|
|
|
if (len > max)
|
|
{
|
|
strip = TRUE;
|
|
len = max;
|
|
errno = 0;
|
|
}
|
|
|
|
if (len > 0)
|
|
memcpy(buffer, stream->string.buffer + stream->string.pos, len);
|
|
|
|
stream->string.pos += len;
|
|
STREAM_eff_read = len;
|
|
|
|
return strip;
|
|
}
|
|
|
|
#define stream_getchar NULL
|
|
|
|
static int stream_write(STREAM *stream, char *buffer, int len)
|
|
{
|
|
if ((stream->common.mode & ST_WRITE) == 0)
|
|
THROW(E_ACCESS);
|
|
|
|
stream->string.buffer = STRING_add(stream->string.buffer, buffer, len);
|
|
|
|
stream->string.size += len;
|
|
stream->string.pos = stream->string.size;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static int stream_seek(STREAM *stream, int64_t pos, int whence)
|
|
{
|
|
int ipos = (int)pos;
|
|
|
|
if (pos != (int64_t)ipos || ipos < 0 || ipos > stream->string.size)
|
|
return TRUE;
|
|
|
|
stream->string.pos = ipos;
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static int stream_tell(STREAM *stream, int64_t *pos)
|
|
{
|
|
*pos = (int64_t)stream->string.pos;
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static int stream_flush(STREAM *stream)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static int stream_eof(STREAM *stream)
|
|
{
|
|
return (stream->string.pos >= stream->string.size);
|
|
}
|
|
|
|
|
|
static int stream_lof(STREAM *stream, int64_t *len)
|
|
{
|
|
*len = STRING_length(stream->string.buffer);
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static int stream_handle(STREAM *stream)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
|
|
DECLARE_STREAM(STREAM_string);
|