src/lib/istream-data.c

	istream-data.c revision 7d207b1e77a7b5e3fda640e353acfc86d261fedf
/* Copyright (c) 2002-2003 Timo Sirainen */

#include "lib.h"
#include "istream-internal.h"

static void _close(struct _iostream *stream __attr_unused__)
{
}

static void _destroy(struct _iostream *stream __attr_unused__)
{
}

static void _set_max_buffer_size(struct _iostream *stream __attr_unused__,
                 size_t max_size __attr_unused__)
{
}

static ssize_t _read(struct _istream *stream __attr_unused__)
{
    stream->istream.eof = TRUE;
    return -1;
}

static void _seek(struct _istream *stream, uoff_t v_offset,
          int mark __attr_unused__)
{
    stream->skip = v_offset;
    stream->istream.v_offset = v_offset;
}

static const struct stat *
_stat(struct _istream *stream, int exact __attr_unused__)
{
    stream->statbuf.st_size = stream->pos;
    return &stream->statbuf;
}

struct istream *i_stream_create_from_data(pool_t pool, const void *data,
                      size_t size)
{
    struct _istream *stream;

    stream = p_new(pool, struct _istream, 1);
    stream->buffer = data;
    stream->pos = size;

    stream->iostream.close = _close;
    stream->iostream.destroy = _destroy;
    stream->iostream.set_max_buffer_size = _set_max_buffer_size;

    stream->read = _read;
    stream->seek = _seek;
    stream->stat = _stat;

    stream->istream.seekable = TRUE;
    return _i_stream_create(stream, pool, -1, 0);
}