glob_free(pExclude);
  if( listFlag ) fflush(stdout);
  if( zOut ){
    blob_write_to_file(&tarball, zOut);
    blob_reset(&tarball);
  }
}

/*
** This is a helper routine for tar_uuid_from_name().  It handles
** the case where *pzName contains no "/" character.  Check for
** format (3).  Return the hash if the name matches format (3),
** or return NULL if it does not.
*/
static char *format_three_parser(const char *zName){
  int iDot = 0;    /* Index in zName[] of the first '.' */
  int iDash1 = 0;  /* Index in zName[] of the '-' before the timestamp */
  int iDash2 = 0;  /* Index in zName[] of the '-' between timestamp and hash */
  int nHash;       /* Size of the hash */
  char *zHash;     /* A copy of the hash value */
  char *zDate;     /* Copy of the timestamp */
  char *zUuid;     /* Final result */
  int i;           /* Loop query */
  Stmt q;          /* Query to verify that hash and timestamp agree */

  for(i=0; zName[i]; i++){
    char c = zName[i];
    if( c=='.' ){ iDot = i;  break; }
    if( c=='-' ){ iDash1 = iDash2; iDash2 = i; }
    if( !fossil_isalnum(c) && c!='_' && c!='-' ){ break; }
  }
  if( iDot==0 ) return 0;
  if( iDash1==0 ) return 0;
  nHash = iDot - iDash2 - 1;
  if( nHash<8 ) return 0;                /* HASH value too short */  
  if( (iDash2 - iDash1)!=15 ) return 0;  /* Wrong timestamp size */
  zHash = fossil_strndup(&zName[iDash2+1], nHash);
  zDate = fossil_strndup(&zName[iDash1+1], 14);
  db_prepare(&q, 
    "SELECT blob.uuid"
    "  FROM blob JOIN event ON event.objid=blob.rid"
    " WHERE blob.uuid GLOB '%q*'"
    "   AND strftime('%%Y%%m%%d%%H%%M%%S',event.mtime)='%q'", 
    zHash, zDate
  );
  fossil_free(zHash);
  fossil_free(zDate);
  if( db_step(&q)==SQLITE_ROW ){
    zUuid = fossil_strdup(db_column_text(&q,0));
  }else{
    zUuid = 0;
  }
  db_finalize(&q);
  return zUuid;
}

/*
** Check to see if the input string is of one of the following
** two the forms:
**
**        check-in-name/filename.ext                       (1)
**        tag-name/check-in-name/filename.txt              (2)
**        tag-name/check-in-name/filename.ext              (2)
**        project-datetime-hash.ext                        (3)
**
** In other words, check to see if the input string contains either
** a check-in name or a tag-name and a check-in name separated by
** a slash.  There must be either 1 or 2 "/" characters.  In the
** a slash.  There must be between 0 or 2 "/" characters.  In the
** second form, tag-name must be an individual tag (not a branch-tag)
** that is found on the check-in identified by the check-in-name.
**
** If the condition is true, then:
**
**   *  Make *pzName point to the fielname suffix only
**   *  Make *pzName point to the filename suffix only
**   *  return a copy of the check-in name in memory from mprintf().
**
** If the condition is false, leave *pzName unchanged and return either
** NULL or an empty string.  Normally NULL is returned, however an
** empty string is returned for format (2) if check-in-name does not
** match tag-name.
**
** Format (2) is specifically designed to allow URLs like this:
**
**      /tarball/release/UUID/PROJECT.tar.gz
**
** Such URLs will pass through most anti-robot filters because of the
** "/tarball/release" prefix will match the suggested "robot-exception"
** pattern and can still refer to an historic release rather than just
** the most recent release.
**
** Format (3) is designed to allow URLs like this:
**
**     /tarball/fossil-20251018193920-d6c9aee97df.tar.gz
**
** In other words, filename itself contains sufficient information to
** uniquely identify the check-in, including a timestamp of the form
** YYYYMMDDHHMMSS and a prefix of the check-in hash.  The timestamp
** and hash must immediately preceed the first "." in the name.
*/
char *tar_uuid_from_name(char **pzName){
  char *zName = *pzName;      /* Original input */
  int n1 = 0;                 /* Bytes in first prefix (tag-name) */
  int n2 = 0;                 /* Bytes in second prefix (check-in-name) */
  int n = 0;                  /* max(n1,n2) */
  int i;                      /* Loop counter */
  for(i=n1=n2=0; zName[i]; i++){
    if( zName[i]=='/' ){
      if( n1==0 ){
        n = n1 = i;
      }else if( n2==0 ){
        n = n2 = i;
      }else{
        return 0;   /* More than two "/" characters seen */
      }
    }
  }
  if( n1==0 ){
    /* Check for format (3) */
    return 0;    /* No prefix of any kind */
    return format_three_parser(*pzName);
  }
  if( zName[n+1]==0 ){
    return 0;    /* No filename suffix */
  }
  if( n2==0 ){
    /* Format (1): check-in name only.  The check-in-name is not verified */
    zName[n1] = 0;

      }
      if( (tmFlags & TIMELINE_GRAPH)==0 && fossil_strcmp(zBrName,"trunk")!=0 ){
        @ branch: \
        @   %z(href("%R/timeline?r=%t",zBrName))%h(zBrName)</a>
      }
    }
    zNm = archive_base_name(rid);
    @ %z(href("%R/tarball/%!S/%s.tar.gz",zUuid,zNm))\
    @ %z(href("%R/tarball/%s.tar.gz",zNm))\
    @    <button>Tarball</button></a>
    @  %z(href("%R/zip/%!S/%s.zip",zUuid,zNm))\
    @  %z(href("%R/zip/%s.zip",zNm))\
    @    <button>ZIP&nbsp;Archive</button></a>
    fossil_free(zBrName);
    fossil_free(zNm);
  }
}

/*

  zBase = archive_base_name(rid);
  @ <div class="section accordion">Downloads for check-in \
  @ %z(href("%R/info/%!S",zUuid))%S(zUuid)</a></div>
  @ <div class="accordion_panel">
  @ <table class="label-value">
  @ <tr>
  @ <th>Tarball:</th>
  @ <td>%z(href("%R/tarball/%!S/%s.tar.gz",zUuid,zBase))\
  @ %s(g.zBaseURL)/tarball/%!S(zUuid)/%s(zBase).tar.gz</a></td>
  @ <td>%z(href("%R/tarball/%s.tar.gz",zBase))\
  @ %s(g.zBaseURL)/tarball/%s(zBase).tar.gz</a></td>
  @ </tr>
  @
  @ <tr>
  @ <th>ZIP:</th>
  @ <td>%z(href("%R/zip/%!S/%s.zip",zUuid,zBase))\
  @ %s(g.zBaseURL)/zip/%!S(zUuid)/%s(zBase).zip</a></td>
  @ <td>%z(href("%R/zip/%s.zip",zBase))\
  @ %s(g.zBaseURL)/zip/%s(zBase).zip</a></td>
  @ </tr>
  @
  @ <tr>
  @ <th>SQLAR:</th>
  @ <td>%z(href("%R/sqlar/%!S/%s.sqlar",zUuid,zBase))\
  @ %s(g.zBaseURL)/sqlar/%!S(zUuid)/%s(zBase).sqlar</a></td>
  @ <td>%z(href("%R/sqlar/%s.sqlar",zBase))\
  @ %s(g.zBaseURL)/sqlar/%s(zBase).sqlar</a></td>
  @ </tr>
  @ </table></div>
  fossil_free(zBase);
  @ <div class="section accordion">Context</div><div class="accordion_panel">
  render_checkin_context(rid, 0, 0, 0);
  @ </div>
  style_finish_page();
}