Fossil

*******************************************************************************
**
** Implementation of the Tag View page
*/
#include <assert.h>
#include "config.h"
#include "tagview.h"


#if 1
#  define TAGVIEW_DEFAULT_FILTER "AND t.tagname NOT GLOB 'wiki-*' "
#else
#  define TAGVIEW_DEFAULT_FILTER
#endif


/**
tagview_strxform_f is a typedef for funcs with the following policy:

They accept a const string which they then transform into some other
form. They return a transformed copy, which the caller is responsible
for freeing.

/** Returns a hyperlink to uuid. */
static char * tagview_xf_link_to_uuid( char const * uuid )
{
  const int offset = 10;
  char shortname[offset+1];
  shortname[offset] = '\0';
  memcpy( shortname, uuid, offset );
  return mprintf( "<tt><a href='%s/vinfo/%s'><span style='font-size:1.5em'>%s</span>%s</a></tt>",
                  g.zBaseURL, uuid, shortname, uuid+offset );
}

/** Returns a hyperlink to the given tag. */
static char * tagview_xf_link_to_tagid( char const * tagid )
{
  return mprintf( "<a href='%s/tagview?tagid=%s'>%s</a>",

  {
    likeclause = mprintf( "AND t.tagname LIKE '%%%%%q%%%%'", like );
    @ <h2>Tags matching [%s(likeclause)]:</h2>
  }
  else
  {
    limitstr = mprintf( "LIMIT %d", limit );
    @ <h2>%d(limit) most recent tags:</h2>
  }
  char * sql = mprintf( 
    "SELECT t.tagid, t.tagname, DATETIME(tx.mtime), b.uuid "
    "FROM tag t, tagxref tx, blob b "
    "WHERE (t.tagid=tx.tagid) and (tx.srcid=b.rid) "
    "AND (tx.tagtype != 0) %s "
    TAGVIEW_DEFAULT_FILTER
    "ORDER BY tx.mtime DESC %s",
    likeclause ? likeclause : " ",
    limitstr ? limitstr : " "
    );
  if( limitstr ) free(limitstr);
  if( likeclause ) free(likeclause);
  char const * const colnames[] = {
    "Tag ID", "Name", "Timestamp", "Version"
  };
  tagview_strxform_f xf[] = {
    tagview_xf_link_to_tagid,
    tagview_xf_link_to_tagname,
    0,

static void tagview_page_tag_by_id( int tagid )
{
  @ <h2>Tag #%d(tagid):</h2>
  char * sql = mprintf( 
    "SELECT DISTINCT (t.tagname), DATETIME(tx.mtime), b.uuid "
    "FROM tag t, tagxref tx, blob b "
    "WHERE (t.tagid=%d) AND (t.tagid=tx.tagid) AND (tx.srcid=b.rid) "
    TAGVIEW_DEFAULT_FILTER
    "ORDER BY tx.mtime DESC",
  tagid);
  char const * const colnames[] = {
      "Tag Name", "Timestamp", "Version"
  };
  tagview_strxform_f xf[] = {
      tagview_xf_link_to_tagname,

static void tagview_page_tag_by_name( char const * tagname )
{
  @ <h2>Tag '%s(tagname)':</h2>
  char * sql = mprintf( 
    "SELECT DISTINCT t.tagid, DATETIME(tx.mtime), b.uuid "
    "FROM tag t, tagxref tx, blob b "
    "WHERE (t.tagname='%q') AND (t.tagid=tx.tagid) AND (tx.srcid=b.rid) "
    TAGVIEW_DEFAULT_FILTER
    "ORDER BY tx.mtime DESC",
    tagname);
  char const * const colnames[] = {
      "Tag ID", "Timestamp", "Version"
  };
  tagview_strxform_f xf[] = {
      tagview_xf_link_to_tagid,
      0,
      tagview_xf_link_to_uuid
  };
  tagview_run_query( sql, colnames, xf );
  free( sql );
}


/*
** WEBPAGE: /tagview
*/
void tagview_page(void){

  login_check_credentials();
  if( !g.okRdWiki ){
    login_needed();
  }
  style_header("Tags");
  tagview_page_search_miniform();
  @ <hr/>

  }
  else
  {
    tagview_page_default();
  }
  style_footer();
}

#undef TAGVIEW_DEFAULT_FILTER