/* ------------------------------------------------------------ */
/*
HTTrack Website Copier, Offline Browser for Windows and Unix
Copyright (C) 1998 Xavier Roche and other contributors

SPDX-License-Identifier: GPL-3.0-or-later

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 3 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, see <http://www.gnu.org/licenses/>.

Ethical use: we kindly ask that you NOT use this software to harvest email
addresses or to collect any other private information about people. Doing so
would dishonor our work and waste the many hours we have spent on it.

Please visit our Website: http://www.httrack.com
*/

/* ------------------------------------------------------------ */
/* File: httrack.c subroutines:                                 */
/*       savename routine (compute output filename)             */
/* Author: Xavier Roche                                         */
/* ------------------------------------------------------------ */

#ifndef HTSNAME_DEFH
#define HTSNAME_DEFH

#include "htsglobal.h"

#define DELAYED_EXT "delayed"
#define IS_DELAYED_EXT(a) ( ((a) != NULL) && ((a)[0] != 0) && strendwith_(a, "." DELAYED_EXT) )
HTS_STATIC int strendwith_(const char *a, const char *b) {
  int i, j;

  for(i = 0; a[i] != 0; i++) ;
  for(j = 0; b[j] != 0; j++) ;
  while(i >= 0 && j >= 0 && a[i] == b[j]) {
    i--;
    j--;
  }
  return (j == -1);
}

#define CACHE_REFNAME "hts-cache/ref"

/* Library internal definictions */
#ifdef HTS_INTERNAL_BYTECODE

/* Forward definitions */
#ifndef HTS_DEF_FWSTRUCT_httrackp
#define HTS_DEF_FWSTRUCT_httrackp
typedef struct httrackp httrackp;
#endif
#ifndef HTS_DEF_FWSTRUCT_lien_url
#define HTS_DEF_FWSTRUCT_lien_url
typedef struct lien_url lien_url;
#endif
#ifndef HTS_DEF_FWSTRUCT_struct_back
#define HTS_DEF_FWSTRUCT_struct_back
typedef struct struct_back struct_back;
#endif
#ifndef HTS_DEF_FWSTRUCT_cache_back
#define HTS_DEF_FWSTRUCT_cache_back
typedef struct cache_back cache_back;
#endif
#ifndef HTS_DEF_FWSTRUCT_hash_struct
#define HTS_DEF_FWSTRUCT_hash_struct
typedef struct hash_struct hash_struct;
#endif
#ifndef HTS_DEF_FWSTRUCT_lien_back
#define HTS_DEF_FWSTRUCT_lien_back
typedef struct lien_back lien_back;
#endif
#ifndef HTS_DEF_FWSTRUCT_lien_adrfil
#define HTS_DEF_FWSTRUCT_lien_adrfil
typedef struct lien_adrfil lien_adrfil;
#endif
#ifndef HTS_DEF_FWSTRUCT_lien_adrfilsave
#define HTS_DEF_FWSTRUCT_lien_adrfilsave
typedef struct lien_adrfilsave lien_adrfilsave;
#endif

// note: 'headers' can either be null, or incomplete (only r member filled)
// note: 'sback' can be null: the type-probing request is then skipped
int url_savename(lien_adrfilsave *const afs,
                 lien_adrfil *const former,
                 const char *referer_adr, const char *referer_fil, 
                 httrackp * opt, struct_back * sback, cache_back * cache,
                 hash_struct * hash, int ptr, int numero_passe,
                 const lien_back * headers);
void standard_name(char *b, size_t bsize, const char *dot_pos,
                   const char *nom_pos, const char *fil_complete,
                   int short_ver);
/* Append s to d (mapping '\' to '/'), clipped to dsize bytes including the NUL.
   Clips rather than aborts: s is a crawled link, hostile by construction. */
void url_savename_addstr(char *d, size_t dsize, const char *s);
/* Append sep+s to d whole, cutting d's tail (never inside a UTF-8 character)
   for room, so the suffix always survives; nothing happens if it alone fills
   dsize. */
void url_savename_addtail(char *d, size_t dsize, const char *sep,
                          const char *s);
/* Leading len bytes of path into buf; returns how many were read (0 on any
   failure), so a caller reading nothing decides for itself what that means. */
size_t hts_read_file_head(const char *path, void *buf, size_t len);

/* Contested wire-vs-ext verdict that a body sniff could settle (htssniff.h). */
int hts_ext_sniff_wanted(httrackp *opt, const char *wiremime, const char *file);
char *url_md5(char *digest_buffer, const char *fil_complete);
void url_savename_refname(const char *adr, const char *fil, char *filename);
char *url_savename_refname_fullpath(httrackp * opt, const char *adr,
                                    const char *fil);
/* Remove the temp-ref for (adr,fil); HTS_TRUE if it was removed. */
hts_boolean url_savename_refname_remove(httrackp *opt, const char *adr,
                                        const char *fil);
#endif

#endif
