/*

 Copyright (C) 1990-1996 Mark Adler, Richard B. Wales, Jean-loup Gailly,
 Kai Uwe Rommel, Onno van der Linden, Igor Mandrichenko, Paul Kienitz and
 John Bush.
 Permission is granted to any individual or institution to use, copy, or
 redistribute this software so long as all of the original files are included,
 that it is not sold for profit, and that this copyright notice is retained.

*/

/* OS specific routines for AMIGA platform.
 *
 * John Bush    <JBush@landfill.east.sun.com>  BIX: jbush
 * Paul Kienitz <Paul.Kienitz@f28.n125.z1.fidonet.org>
 *
 * History:
 *
 * Date     DoBee    Comments
 * -------  -------- -----------------------------------------------
 * 21Jan93  JBush    Original coding.
 *                   Incorporated filedate.c (existing routine).
 *
 * 31Jan93  JBush    Made filedate.c include unconditional.
 *
 * 18Jul93  PaulK    Moved Aztec _abort() here from stat.c because we
 *                   can't share the same one between Zip and UnZip.
 *                   Added close_leftover_open_dirs() call to it.
 *
 * 17Apr95  PaulK    Added Amiga internal version string so that
 *                   installer programs can compare the version being
 *                   installed to see if the copy the user already has
 *                   is older or newer.  Added Prestart_Hook to support
 *                   debug tracing in deflate.a.
 *
 *  6May95  PaulK    Added GetComment() for filenote support.
 *
 * 12Nov95  PaulK    Added #define ZIP in front of filedate.c, for
 *                   new options in there; removed declare of set_con()
 *                   since echon() no longer expands to it (or anything).
 *
 * 12Feb96  PaulK    Removed call of echon() entirely.
 */

#include "ziperr.h"
void ziperr(int c, char *h);

/* ============================================================ */
/* filedate.c is an external file, since it's shared with UnZip */

#define ZIP
#include "amiga/filedate.c"

#ifdef AZTEC_C
#  include <fcntl.h>
#  ifdef DEBUG
#    define PRESTART_HOOK
#  endif

/* ============================================================ */
/* the same applies to stat.c, but only for Aztec               */

#  include "amiga/stat.c"

/* the following handles cleanup when a ^C interrupt happens: */

void _abort(void)               /* called when ^C is pressed */
{
    close_leftover_open_dirs();
    ziperr(ZE_ABORT, "^C");
}

#endif /* AZTEC_C */

/* Make sure the version number here matches the mumber in revision.h */
/* as closely as possible in strict decimal "#.#" form:               */
static char version_id[] = "\0$VER: Zip 2.1 ("
#  include "env:VersionDate"
")\r\n";

/* call this with an arg of NULL to free storage: */

char *GetComment(char *filename)
{
    BPTR lk;
    static struct FileInfoBlock *fib = NULL;

    if (!filename) {
        if (fib) FreeMem(fib, sizeof(*fib));
        fib = NULL;
        return NULL;
    }
    if (!fib) {
        if (!(fib = AllocMem(sizeof(*fib), MEMF_PUBLIC)))
            ziperr(ZE_MEM, "was checking filenotes");
    }
    if (!(lk = Lock(filename, ACCESS_READ)))
        return NULL;
    if (!Examine(lk, fib))
        fib->fib_Comment[0] = '\0';
    UnLock(lk);
    return fib->fib_Comment[0] ? &fib->fib_Comment[0] : NULL;
}