Fossil

      zBody = pWiki->zWiki;
      zMimetype = pWiki->zMimetype;
    }
  }
  zMimetype = wiki_filter_mimetypes(zMimetype);
  if( !g.isHome ){
    if( rid ){
      style_submenu_element("Diff", "%R/wdiff?name=%T&a=%d", zPageName, rid);
      zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);



      style_submenu_element("Details", "%R/info/%s", zUuid);
    }
    if( (rid && g.anon.WrWiki) || (!rid && g.anon.NewWiki) ){
      if( db_get_boolean("wysiwyg-wiki", 0) ){
        style_submenu_element("Edit", "%s/wikiedit?name=%T&wysiwyg=1",
             g.zTop, zPageName);
      }else{
................................................................................

/*
** Function called to output extra text at the end of each line in
** a wiki history listing.
*/
static void wiki_history_extra(int rid){
  if( db_exists("SELECT 1 FROM tagxref WHERE rid=%d", rid) ){
    @ &nbsp;op: %z(href("%R/wdiff?name=%t&a=%d",zWikiPageName,rid))diff</a>\
  }
}

/*
** WEBPAGE: whistory
** URL: /whistory?name=PAGENAME
**
................................................................................
  www_print_timeline(&q, tmFlags, 0, 0, 0, wiki_history_extra);
  db_finalize(&q);
  style_footer();
}

/*
** WEBPAGE: wdiff
** URL: /whistory?name=PAGENAME&a=RID1&b=RID2

**
** Show the difference between two wiki pages.








*/
void wdiff_page(void){
  int rid1, rid2;

  const char *zPageName;
  Manifest *pW1, *pW2 = 0;

  Blob w1, w2, d;
  u64 diffFlags;

  login_check_credentials();
  rid1 = atoi(PD("a","0"));
  if( !g.perm.Hyperlink ){ login_needed(g.anon.Hyperlink); return; }

  if( rid1==0 ) fossil_redirect_home();
  rid2 = atoi(PD("b","0"));
  zPageName = PD("name","");
  style_header("Changes To %s", zPageName);

  if( rid2==0 ){
    rid2 = db_int(0,
      "SELECT objid FROM event JOIN tagxref ON objid=rid AND tagxref.tagid="
                        "(SELECT tagid FROM tag WHERE tagname='wiki-%q')"
      " WHERE event.mtime<(SELECT mtime FROM event WHERE objid=%d)"
      " ORDER BY event.mtime DESC LIMIT 1",
      zPageName, rid1
    );
  }
  pW1 = manifest_get(rid1, CFTYPE_WIKI, 0);
  if( pW1==0 ) fossil_redirect_home();
  blob_init(&w1, pW1->zWiki, -1);
  blob_zero(&w2);





  if( rid2 && (pW2 = manifest_get(rid2, CFTYPE_WIKI, 0))!=0 ){
    blob_init(&w2, pW2->zWiki, -1);












  }

  blob_zero(&d);
  diffFlags = construct_diff_flags(1);
  text_diff(&w2, &w1, &d, 0, diffFlags | DIFF_HTML | DIFF_LINENO);
  @ <pre class="udiff">
  @ %s(blob_str(&d))
  @ <pre>
  manifest_destroy(pW1);

      zBody = pWiki->zWiki;
      zMimetype = pWiki->zMimetype;
    }
  }
  zMimetype = wiki_filter_mimetypes(zMimetype);
  if( !g.isHome ){
    if( rid ){

      zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
      if( pWiki && pWiki->nParent ){
        style_submenu_element("Diff", "%R/wdiff?id=%s", zUuid);
      }
      style_submenu_element("Details", "%R/info/%s", zUuid);
    }
    if( (rid && g.anon.WrWiki) || (!rid && g.anon.NewWiki) ){
      if( db_get_boolean("wysiwyg-wiki", 0) ){
        style_submenu_element("Edit", "%s/wikiedit?name=%T&wysiwyg=1",
             g.zTop, zPageName);
      }else{
................................................................................

/*
** Function called to output extra text at the end of each line in
** a wiki history listing.
*/
static void wiki_history_extra(int rid){
  if( db_exists("SELECT 1 FROM tagxref WHERE rid=%d", rid) ){
    @ &nbsp;op: %z(href("%R/wdiff?rid=%d",rid))diff</a>\
  }
}

/*
** WEBPAGE: whistory
** URL: /whistory?name=PAGENAME
**
................................................................................
  www_print_timeline(&q, tmFlags, 0, 0, 0, wiki_history_extra);
  db_finalize(&q);
  style_footer();
}

/*
** WEBPAGE: wdiff
**
** Show the changes to a wiki page.
**

** Query parameters:
**
**      id=HASH           Hash prefix for the child version to be diffed.
**      rid=INTEGER       RecordID for the child version
**      pid=HASH          Hash prefix for the parent.
**
** The "id" query parameter is required.  "pid" is optional.  If "pid"
** is omitted, then the diff is against the first parent of the child.
*/
void wdiff_page(void){

  const char *zId;
  const char *zPid;
  Manifest *pW1, *pW2 = 0;
  int rid1, rid2;
  Blob w1, w2, d;
  u64 diffFlags;

  login_check_credentials();

  if( !g.perm.RdWiki ){ login_needed(g.anon.RdWiki); return; }
  zId = P("id");
  if( zId==0 ){
    rid1 = atoi(PD("rid","0"));
  }else{
    rid1 = name_to_typed_rid(zId, "w");
  }
  zId = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid1);








  pW1 = manifest_get(rid1, CFTYPE_WIKI, 0);
  if( pW1==0 ) fossil_redirect_home();
  blob_init(&w1, pW1->zWiki, -1);
  zPid = P("pid");
  if( zPid==0 && pW1->nParent ){
    zPid = pW1->azParent[0];
  }
  if( zPid ){
    rid2 = name_to_typed_rid(zPid, "w");
    pW2 = manifest_get(rid2, CFTYPE_WIKI, 0);
    blob_init(&w2, pW2->zWiki, -1);
    char *zDate;
    @ <h2>Changes to \
    @ "%z(href("%R/whistory?name=%s",pW1->zWikiTitle))%h(pW1->zWikiTitle)</a>" \
    zDate = db_text(0, "SELECT datetime(%.16g)",pW2->rDate);
    @ between %z(href("%R/info/%s",zPid))%z(zDate)</a> \
    zDate = db_text(0, "SELECT datetime(%.16g)",pW1->rDate);
    @ and %z(href("%R/info/%s",zId))%z(zDate)</a></h2>
  }else{
    blob_zero(&w2);
    @ <h2>Initial version of \
    @ "%z(href("%R/whistory?name=%s",pW1->zWikiTitle))%h(pW1->zWikiTitle)</a>"\
    @ </h2>
  }
  style_header("Changes To %s", pW1->zWikiTitle);
  blob_zero(&d);
  diffFlags = construct_diff_flags(1);
  text_diff(&w2, &w1, &d, 0, diffFlags | DIFF_HTML | DIFF_LINENO);
  @ <pre class="udiff">
  @ %s(blob_str(&d))
  @ <pre>
  manifest_destroy(pW1);