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/*
* Author:
* Guido Draheim <guidod@gmx.de>
* Mike Nordell <tamlin-@-algonet-se>
*
* Copyright (c) 2002,2003 Guido Draheim
* All rights reserved,
* use under the restrictions of the
* Lesser GNU General Public License
* or alternatively the restrictions
* of the Mozilla Public License 1.1
*/
#include <zzip/lib.h>
#include <zzip/plugin.h>
#include <string.h>
#include <sys/stat.h>
#include <errno.h>
#include <stdlib.h>
#ifdef DEBUG
#include <stdio.h>
#endif
#include <zzip/file.h>
#include <zzip/format.h>
zzip_off_t
zzip_filesize(int fd)
{
struct stat st;
if (fstat(fd, &st) < 0)
return -1;
# if defined DEBUG && ! defined _WIN32
if (! st.st_size && st.st_blocks > 1) /* seen on some darwin 10.1 machines */
fprintf(stderr, "broken fstat(2) ?? st_size=%ld st_blocks=%ld\n",
(long) st.st_size, (long) st.st_blocks);
# endif
return st.st_size;
}
static struct zzip_plugin_io default_io = {
&open,
&close,
&_zzip_read,
&_zzip_lseek,
&zzip_filesize,
1, 1,
&_zzip_write
};
/** => zzip_init_io
* This function returns a zzip_plugin_io_t handle to static defaults
* wrapping the posix io file functions for actual file access. The
* returned structure is shared by all threads in the system.
*/
zzip_plugin_io_t
zzip_get_default_io(void)
{
return (zzip_plugin_io_t) & default_io;
}
/**
* This function initializes the users handler struct to default values
* being the posix io functions in default configured environments.
*
* Note that the target io_handlers_t structure should be static or
* atleast it should be kept during the lifetime of zzip operations.
*/
int
zzip_init_io(zzip_plugin_io_handlers_t io, int flags)
{
if (! io)
{
return ZZIP_ERROR;
}
memcpy(io, &default_io, sizeof(default_io));
io->fd.sys = flags;
return 0;
}
/*
* Local variables:
* c-file-style: "stroustrup"
* End:
*/
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