/* The Download: line */
      if( g.anon.Zip ){
        char *zUrl = mprintf("%R/tarball/%t-%S.tar.gz?uuid=%s",
                             zPJ, zUuid, zUuid);
        @ </td></tr>
        @ <tr><th>Downloads:</th><td>
        @ %z(href("%s",zUrl))Tarball</a>
        @ | %z(href("%R/zip/%t-%S.zip?uuid=%!S",zPJ,zUuid,zUuid))ZIP archive</a>
        @ | %z(href("%R/sqlar/%t-%S.sqlar?uuid=%!S",zPJ,zUuid,zUuid))SQL archive</a>
        fossil_free(zUrl);
      }
      @ </td></tr>
      @ <tr><th>Other&nbsp;Links:</th>
      @   <td>
      @     %z(href("%R/tree?ci=%!S",zUuid))files</a>
      @   | %z(href("%R/fileage?name=%!S",zUuid))file ages</a>

**   -R REPOSITORY           Specify a Fossil repository
*/
void sqlar_cmd(void){
  archive_cmd(ARCHIVE_SQLAR);
}

/*
** WEBPAGE: sqlar
** WEBPAGE: zip
**
** Generate a ZIP or SQL archive for the check-in specified by the "r"
** query parameter.  Return the archive as the HTTP reply content.
**
** Query parameters:
**
**   name=NAME           The base name of the output file.  The default
**                       value is a configuration parameter in the project
**                       settings.  A prefix of the name, omitting the
**                       extension, is used as the top-most directory name.
**
**   r=TAG               The check-in that is turned into a ZIP archive.
**                       Defaults to "trunk".  This query parameter used to
**                       be called "uuid" and the older "uuid" name is still

  int nName, nRid;
  const char *zInclude;         /* The in= query parameter */
  const char *zExclude;         /* The ex= query parameter */
  Blob cacheKey;                /* The key to cache */
  Glob *pInclude = 0;           /* The compiled in= glob pattern */
  Glob *pExclude = 0;           /* The compiled ex= glob pattern */
  Blob zip;                     /* ZIP archive accumulated here */
  int eType = ARCHIVE_ZIP;      /* Type of archive to generate */
  char *zType;                  /* Human-readable archive type */

  login_check_credentials();
  if( !g.perm.Zip ){ login_needed(g.anon.Zip); return; }
  if( fossil_strcmp(g.zPath, "sqlar")==0 ){
    eType = ARCHIVE_SQLAR;
    zType = "SQL";
  }else{
    eType = ARCHIVE_ZIP;
    zType = "ZIP";
  }
  load_control();
  zName = mprintf("%s", PD("name",""));
  nName = strlen(zName);
  z = P("r");
  if( z==0 ) z = P("uuid");
  if( z==0 ) z = "trunk";
  g.zOpenRevision = zRid = fossil_strdup(z);
  nRid = strlen(zRid);
  zInclude = P("in");
  if( zInclude ) pInclude = glob_create(zInclude);
  zExclude = P("ex");
  if( zExclude ) pExclude = glob_create(zExclude);
  if( eType==ARCHIVE_ZIP 
   && nName>4
   && fossil_strcmp(&zName[nName-4], ".zip")==0
  ){
    /* Special case:  Remove the ".zip" suffix.  */
    nName -= 4;
    zName[nName] = 0;
  }else if( eType==ARCHIVE_SQLAR 
   && nName>6
   && fossil_strcmp(&zName[nName-6], ".sqlar")==0
  ){
    /* Special case:  Remove the ".sqlar" suffix.  */
    nName -= 6;
    zName[nName] = 0;
  }else{
    /* If the file suffix is not ".zip" or ".sqlar" then just remove the
    ** suffix up to and including the last "." */
    for(nName=strlen(zName)-1; nName>5; nName--){
      if( zName[nName]=='.' ){
        zName[nName] = 0;
        break;
      }
    }
  }
  rid = symbolic_name_to_rid(nRid?zRid:zName, "ci");
  if( rid<=0 ){
    cgi_set_status(404, "Not Found");
    @ Not found
    return;
  }
  if( nRid==0 && nName>10 ) zName[10] = 0;

  /* Compute a unique key for the cache entry based on query parameters */
  blob_init(&cacheKey, 0, 0);
  blob_appendf(&cacheKey, "/%s/%z", g.zPath, rid_to_uuid(rid));
  blob_appendf(&cacheKey, "/%q", zName);
  if( zInclude ) blob_appendf(&cacheKey, ",in=%Q", zInclude);
  if( zExclude ) blob_appendf(&cacheKey, ",ex=%Q", zExclude);
  zKey = blob_str(&cacheKey);

  if( P("debug")!=0 ){
    style_header("%s Archive Generator Debug Screen", zType);
    @ zName = "%h(zName)"<br />
    @ rid = %d(rid)<br />
    if( zInclude ){
      @ zInclude = "%h(zInclude)"<br />
    }
    if( zExclude ){
      @ zExclude = "%h(zExclude)"<br />
    }
    @ zKey = "%h(zKey)"
    style_footer();
    return;
  }
  if( referred_from_login() ){
    style_header("%s Archive Download", zType);
    @ <form action='%R/%s(g.zPath)/%h(zName).%s(g.zPath)'>
    cgi_query_parameters_to_hidden();
    @ <p>%s(zType) Archive named <b>%h(zName).%s(g.zPath)</b>
    @ holding the content of check-in <b>%h(zRid)</b>:
    @ <input type="submit" value="Download" />
    @ </form>
    style_footer();
    return;
  }
  blob_zero(&zip);
  if( cache_read(&zip, zKey)==0 ){
    zip_of_checkin(eType, rid, &zip, zName, pInclude, pExclude);
    cache_write(&zip, zKey);
  }
  glob_free(pInclude);
  glob_free(pExclude);
  fossil_free(zName);
  fossil_free(zRid);
  blob_reset(&cacheKey);
  cgi_set_content(&zip);
  if( eType==ARCHIVE_ZIP ){
    cgi_set_content_type("application/zip");
  }else{
    cgi_set_content_type("application/sqlar");
  }
}