{ "vcd",        3, "application/x-cdlink"              },
    { "vda",        3, "application/vda"                   },
    { "viv",        3, "video/vnd.vivo"                    },
    { "vivo",       4, "video/vnd.vivo"                    },
    { "vrml",       4, "model/vrml"                        },
    { "wav",        3, "audio/x-wav"                       },
    { "wax",        3, "audio/x-ms-wax"                    },
    { "wiki",       4, "text/x-fossil-wiki"                },
    { "wma",        3, "audio/x-ms-wma"                    },
    { "wmv",        3, "video/x-ms-wmv"                    },
    { "wmx",        3, "video/x-ms-wmx"                    },
    { "wrl",        3, "model/vrml"                        },
    { "wvx",        3, "video/x-ms-wvx"                    },
    { "xbm",        3, "image/x-xbitmap"                   },
    { "xlc",        3, "application/vnd.ms-excel"          },

    zMime = mimetype_from_name(zName);
  }
  Th_Store("doc_name", zName);
  Th_Store("doc_version", db_text(0, "SELECT '[' || substr(uuid,1,10) || ']'"
                                     "  FROM blob WHERE rid=%d", vid));
  Th_Store("doc_date", db_text(0, "SELECT datetime(mtime) FROM event"
                                  " WHERE objid=%d AND type='ci'", vid));
  if( fossil_strcmp(zMime, "text/x-fossil-wiki")==0 ){
    Blob title, tail;
    if( wiki_find_title(&filebody, &title, &tail) ){
      style_header(blob_str(&title));
      wiki_convert(&tail, 0, WIKI_BUTTONS);
    }else{
      style_header("Documentation");
      wiki_convert(&filebody, 0, WIKI_BUTTONS);

        style_submenu_element("Html", "Html",
                              "%s/artifact/%s", g.zTop, zUuid);
      }else{
        renderAsHtml = 1;
        style_submenu_element("Text", "Text",
                              "%s/artifact/%s?txt=1", g.zTop, zUuid);
      }
    }else if( fossil_strcmp(zMime, "text/x-fossil-wiki")==0 ){
      if( asText ){
        style_submenu_element("Wiki", "Wiki",
                              "%s/artifact/%s", g.zTop, zUuid);
      }else{
        renderAsWiki = 1;
        style_submenu_element("Text", "Text",
                              "%s/artifact/%s?txt=1", g.zTop, zUuid);

/*
** Return true if the given pagename is the name of the sandbox
*/
static int is_sandbox(const char *zPagename){
  return fossil_stricmp(zPagename,"sandbox")==0 ||
         fossil_stricmp(zPagename,"sand box")==0;
}

/*
** Only allow certain mimetypes through.
** All others become "text/x-fossil-wiki"
*/
const char *wiki_filter_mimetypes(const char *zMimetype){
  if( zMimetype!=0 &&
      ( fossil_strcmp(zMimetype, "text/x-markdown")==0
        || fossil_strcmp(zMimetype, "text/plain")==0 )
  ){
    return zMimetype;
  }
  return "text/x-fossil-wiki";
}

/*
** Render wiki text according to its mimetype
*/
void wiki_render_by_mimetype(Blob *pWiki, const char *zMimetype){
  if( zMimetype==0 || fossil_strcmp(zMimetype, "text/x-fossil-wiki")==0 ){
    wiki_convert(pWiki, 0, 0);
  }else if( fossil_strcmp(zMimetype, "text/x-markdown")==0 ){
    Blob title = BLOB_INITIALIZER;
    Blob tail = BLOB_INITIALIZER;
    markdown_to_html(pWiki, &title, &tail);
    if( blob_size(&title)>0 ){
      @ <h1>%s(blob_str(&title))</h1>
    }
    @ %s(blob_str(&tail))
    blob_reset(&title);
    blob_reset(&tail);
  }else{
    @ <pre>
    @ %h(blob_str(pWiki))
    @ </pre>
  }
}


/*
** WEBPAGE: wiki
** URL: /wiki?name=PAGENAME
*/
void wiki_page(void){
  char *zTag;
  int rid = 0;
  int isSandbox;
  char *zUuid;
  Blob wiki;
  Manifest *pWiki = 0;
  const char *zPageName;
  const char *zMimetype;
  char *zBody = mprintf("%s","<i>Empty Page</i>");

  login_check_credentials();
  if( !g.perm.RdWiki ){ login_needed(); return; }
  zPageName = P("name");
  if( zPageName==0 ){
    style_header("Wiki");

    style_footer();
    return;
  }
  if( check_name(zPageName) ) return;
  isSandbox = is_sandbox(zPageName);
  if( isSandbox ){
    zBody = db_get("sandbox",zBody);
    zMimetype = db_get("sandbox-mimetype","text/x-fossil-wiki");
    rid = 0;
  }else{
    zTag = mprintf("wiki-%s", zPageName);
    rid = db_int(0, 
      "SELECT rid FROM tagxref"
      " WHERE tagid=(SELECT tagid FROM tag WHERE tagname=%Q)"
      " ORDER BY mtime DESC", zTag
    );
    free(zTag);
    pWiki = manifest_get(rid, CFTYPE_WIKI);
    if( pWiki ){
      zBody = pWiki->zWiki;
      zMimetype = pWiki->zMimetype;
    }
  }
  zMimetype = wiki_filter_mimetypes(zMimetype);
  if( !g.isHome ){
    if( rid ){
      style_submenu_element("Diff", "Last change",
                 "%R/wdiff?name=%T&a=%d", zPageName, rid);
      zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
      style_submenu_element("Details", "Details",
                   "%R/info/%S", zUuid);

    }
    if( rid && g.perm.ApndWiki && g.perm.Attach ){
      style_submenu_element("Attach", "Add An Attachment",
           "%s/attachadd?page=%T&from=%s/wiki%%3fname=%T",
           g.zTop, zPageName, g.zTop, zPageName);
    }
    if( rid && g.perm.ApndWiki ){
      style_submenu_element("Append", "Add A Comment", 
           "%s/wikiappend?name=%T&mimetype=%s",
           g.zTop, zPageName, zMimetype);
    }
    if( g.perm.Hyperlink ){
      style_submenu_element("History", "History", "%s/whistory?name=%T",
           g.zTop, zPageName);
    }
  }
  style_set_current_page("%s?name=%T", g.zPath, zPageName);
  style_header(zPageName);
  blob_init(&wiki, zBody, -1);
  wiki_render_by_mimetype(&wiki, zMimetype);
  blob_reset(&wiki);
  attachment_list(zPageName, "<hr /><h2>Attachments:</h2><ul>");
  manifest_destroy(pWiki);
  style_footer();
}

/*

    moderation_table_create();
    db_multi_exec("INSERT INTO modreq(objid) VALUES(%d)", nrid);
  }
  db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nrid);
  db_multi_exec("INSERT OR IGNORE INTO unclustered VALUES(%d);", nrid);
  manifest_crosslink(nrid, pWiki);
}

/*
** Formal names and common names for the various wiki styles.
*/
static const char *azStyles[] = {
  "text/x-fossil-wiki", "Fossil Wiki",
  "text/x-markdown",    "Markdown",
  "text/plain",         "Plain Text"
};

/*
** Output a selection box from which the user can select the
** wiki mimetype.
*/
static void mimetype_option_menu(const char *zMimetype){
  unsigned i;
  @ Markup style: <select name="mimetype" size="1">
  for(i=0; i<sizeof(azStyles)/sizeof(azStyles[0]); i+=2){
    if( fossil_strcmp(zMimetype,azStyles[i])==0 ){
      @ <option value="%s(azStyles[i])" selected>%s(azStyles[i+1])</option>
    }else{
      @ <option value="%s(azStyles[i])">%s(azStyles[i+1])</option>
    }
  }
  @ </select>
}

/*
** Given a mimetype, return its common name.
*/
static const char *mimetype_common_name(const char *zMimetype){
  int i;
  for(i=4; i>=2; i-=2){
    if( zMimetype && fossil_strcmp(zMimetype, azStyles[i])==0 ){
      return azStyles[i+1];
    }
  }
  return azStyles[1];
}

/*
** WEBPAGE: wikiedit
** URL: /wikiedit?name=PAGENAME
*/
void wikiedit_page(void){
  char *zTag;
  int rid = 0;
  int isSandbox;
  Blob wiki;
  Manifest *pWiki = 0;
  const char *zPageName;
  int n;
  const char *z;
  char *zBody = (char*)P("w");
  const char *zMimetype = wiki_filter_mimetypes(P("mimetype"));
  int isWysiwyg = P("wysiwyg")!=0;
  int goodCaptcha = 1;

  if( P("edit-wysiwyg")!=0 ){ isWysiwyg = 1; zBody = 0; }
  if( P("edit-markup")!=0 ){ isWysiwyg = 0; zBody = 0; }
  if( zBody ){
    if( isWysiwyg ){

  if( isSandbox ){
    if( !g.perm.WrWiki ){
      login_needed();
      return;
    }
    if( zBody==0 ){
      zBody = db_get("sandbox","");
      zMimetype = db_get("sandbox-mimetype","text/x-fossil-wiki");
    }
  }else{
    zTag = mprintf("wiki-%s", zPageName);
    rid = db_int(0, 
      "SELECT rid FROM tagxref"
      " WHERE tagid=(SELECT tagid FROM tag WHERE tagname=%Q)"
      " ORDER BY mtime DESC", zTag
    );
    free(zTag);
    if( (rid && !g.perm.WrWiki) || (!rid && !g.perm.NewWiki) ){
      login_needed();
      return;
    }
    if( zBody==0 && (pWiki = manifest_get(rid, CFTYPE_WIKI))!=0 ){
      zBody = pWiki->zWiki;
      zMimetype = pWiki->zMimetype;
    }
  }
  if( P("submit")!=0 && zBody!=0
   && (goodCaptcha = captcha_is_correct())
  ){
    char *zDate;
    Blob cksum;
    blob_zero(&wiki);
    db_begin_transaction();
    if( isSandbox ){
      db_set("sandbox",zBody,0);
      db_set("sandbox-mimetype",zMimetype,0);
    }else{
      login_verify_csrf_secret();
      zDate = date_in_standard_format("now");
      blob_appendf(&wiki, "D %s\n", zDate);
      free(zDate);
      blob_appendf(&wiki, "L %F\n", zPageName);
      if( fossil_strcmp(zMimetype,"text/x-fossil-wiki")!=0 ){
        blob_appendf(&wiki, "N %s\n", zMimetype);
      }
      if( rid ){
        char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
        blob_appendf(&wiki, "P %s\n", zUuid);
        free(zUuid);
      }
      if( g.zLogin ){
        blob_appendf(&wiki, "U %F\n", g.zLogin);

  if( !goodCaptcha ){
    @ <p class="generalError">Error:  Incorrect security code.</p>
  }
  blob_zero(&wiki);
  blob_append(&wiki, zBody, -1);
  if( P("preview")!=0 ){
    @ Preview:<hr />
    wiki_render_by_mimetype(&wiki, zMimetype);
    @ <hr />
    blob_reset(&wiki);
  }
  for(n=2, z=zBody; z[0]; z++){
    if( z[0]=='\n' ) n++;
  }
  if( n<20 ) n = 20;
  if( n>30 ) n = 30;
  if( !isWysiwyg ){
    /* Traditional markup-only editing */
    form_begin(0, "%R/wikiedit");
    @ <div>
    mimetype_option_menu(zMimetype);
    @ <br /><textarea name="w" class="wikiedit" cols="80" 
    @  rows="%d(n)" wrap="virtual">%h(zBody)</textarea>
    @ <br />
    if( db_get_boolean("wysiwyg-wiki", 0) ){
      @ <input type="submit" name="edit-wysiwyg" value="Wysiwyg Editor"
      @  onclick='return confirm("Switching to WYSIWYG-mode\nwill erase your markup\nedits. Continue?")' />
    }
    @ <input type="submit" name="preview" value="Preview Your Changes" />

** URL /wikinew
**
** Prompt the user to enter the name of a new wiki page.  Then redirect
** to the wikiedit screen for that new page.
*/
void wikinew_page(void){
  const char *zName;
  const char *zMimetype;
  login_check_credentials();
  if( !g.perm.NewWiki ){
    login_needed();
    return;
  }  
  zName = PD("name","");
  zMimetype = wiki_filter_mimetypes(P("mimetype"));
  if( zName[0] && wiki_name_is_wellformed((const unsigned char *)zName) ){
    if( fossil_strcmp(zMimetype,"text/x-fossil-wiki")==0
     && db_get_boolean("wysiwyg-wiki", 0)
    ){
      cgi_redirectf("wikiedit?name=%T&wysiwyg=1", zName);
    }else{
      cgi_redirectf("wikiedit?name=%T&mimetype=%s", zName, zMimetype);
    }
  }
  style_header("Create A New Wiki Page");
  @ <p>Rules for wiki page names:</p>
  well_formed_wiki_name_rules();
  form_begin(0, "%R/wikinew");
  @ <p>Name of new wiki page:
  @ <input style="width: 35;" type="text" name="name" value="%h(zName)" /><br />
  mimetype_option_menu("text/x-fossil-wiki");
  @ <br /><input type="submit" value="Create" />
  @ </p></form>
  if( zName[0] ){
    @ <p><span class="wikiError">
    @ "%h(zName)" is not a valid wiki page name!</span></p>
  }
  style_footer();
}


/*
** Append the wiki text for an remark to the end of the given BLOB.
*/
static void appendRemark(Blob *p, const char *zMimetype){
  char *zDate;
  const char *zUser;
  const char *zRemark;
  char *zId;

  zDate = db_text(0, "SELECT datetime('now')");
  zRemark = PD("r","");
  zUser = PD("u",g.zLogin);
  if( fossil_strcmp(zMimetype, "text/x-fossil-wiki")==0 ){
    zId = db_text(0, "SELECT lower(hex(randomblob(8)))");
    blob_appendf(p, "\n\n<hr><div id=\"%s\"><i>On %s UTC %h", 
      zId, zDate, g.zLogin);

    if( zUser[0] && fossil_strcmp(zUser,g.zLogin) ){
      blob_appendf(p, " (claiming to be %h)", zUser);
    }
    blob_appendf(p, " added:</i><br />\n%s</div id=\"%s\">", zRemark, zId);
  }else if( fossil_strcmp(zMimetype, "text/x-markdown")==0 ){
    blob_appendf(p, "\n\n------\n*On %s UTC %h", zDate, g.zLogin);
    if( zUser[0] && fossil_strcmp(zUser,g.zLogin) ){
      blob_appendf(p, " (claiming to be %h)", zUser);
    }
    blob_appendf(p, " added:*\n\n%s\n", zRemark);
  }else{
    blob_appendf(p, "\n\n------------------------------------------------\n"
                    "On %s UTC %s", zDate, g.zLogin);
    if( zUser[0] && fossil_strcmp(zUser,g.zLogin) ){
      blob_appendf(p, " (claiming to be %s)", zUser);
    }
    blob_appendf(p, " added:\n\n%s\n", zRemark);
  }
  fossil_free(zDate);
}

/*
** WEBPAGE: wikiappend
** URL: /wikiappend?name=PAGENAME&mimetype=MIMETYPE
*/
void wikiappend_page(void){
  char *zTag;
  int rid = 0;
  int isSandbox;
  const char *zPageName;
  const char *zUser;
  const char *zMimetype;
  int goodCaptcha = 1;
  const char *zFormat;

  login_check_credentials();
  zPageName = PD("name","");
  zMimetype = wiki_filter_mimetypes(P("mimetype"));
  if( check_name(zPageName) ) return;
  isSandbox = is_sandbox(zPageName);
  if( !isSandbox ){
    zTag = mprintf("wiki-%s", zPageName);
    rid = db_int(0, 
      "SELECT rid FROM tagxref"
      " WHERE tagid=(SELECT tagid FROM tag WHERE tagname=%Q)"

    Blob body;
    Blob wiki;
    Manifest *pWiki = 0;

    blob_zero(&body);
    if( isSandbox ){
      blob_appendf(&body, db_get("sandbox",""));
      appendRemark(&body, zMimetype);
      db_set("sandbox", blob_str(&body), 0);
    }else{
      login_verify_csrf_secret();
      pWiki = manifest_get(rid, CFTYPE_WIKI);
      if( pWiki ){
        blob_append(&body, pWiki->zWiki, -1);
        manifest_destroy(pWiki);
      }
      blob_zero(&wiki);
      db_begin_transaction();
      zDate = date_in_standard_format("now");
      blob_appendf(&wiki, "D %s\n", zDate);
      blob_appendf(&wiki, "L %F\n", zPageName);
      if( fossil_strcmp(zMimetype, "text/x-fossil-wiki")!=0 ){
        blob_appendf(&wiki, "N %s\n", zMimetype);
      }
      if( rid ){
        char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
        blob_appendf(&wiki, "P %s\n", zUuid);
        free(zUuid);
      }
      if( g.zLogin ){
        blob_appendf(&wiki, "U %F\n", g.zLogin);
      }
      appendRemark(&body, zMimetype);
      blob_appendf(&wiki, "W %d\n%s\n", blob_size(&body), blob_str(&body));
      md5sum_blob(&wiki, &cksum);
      blob_appendf(&wiki, "Z %b\n", &cksum);
      blob_reset(&cksum);
      wiki_put(&wiki, rid);
      db_end_transaction(0);
    }

  style_header("Append Comment To: %s", zPageName);
  if( !goodCaptcha ){
    @ <p class="generalError">Error: Incorrect security code.</p>
  }
  if( P("preview")!=0 ){
    Blob preview;
    blob_zero(&preview);
    appendRemark(&preview, zMimetype);
    @ Preview:<hr>
    wiki_render_by_mimetype(&preview, zMimetype);
    @ <hr>
    blob_reset(&preview);
  }
  zUser = PD("u", g.zLogin);
  form_begin(0, "%R/wikiappend");
  login_insert_csrf_secret();
  @ <input type="hidden" name="name" value="%h(zPageName)" />
  @ <input type="hidden" name="mimetype" value="%h(zMimetype)" />
  @ Your Name:
  @ <input type="text" name="u" size="20" value="%h(zUser)" /><br />
  zFormat = mimetype_common_name(zMimetype);
  @ Comment to append (formatted as %s(zFormat)):<br />
  @ <textarea name="r" class="wikiedit" cols="80" 
  @  rows="10" wrap="virtual">%h(PD("r",""))</textarea>
  @ <br />
  @ <input type="submit" name="preview" value="Preview Your Comment" />
  @ <input type="submit" name="submit" value="Append Your Changes" />
  @ <input type="submit" name="cancel" value="Cancel" />
  captcha_generate();