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import { qs, qsa } from "./core";
import Url from "./url";
import Path from "./path";
export function replaceBase(doc, section){
var base;
var head;
var url = section.url;
var absolute = (url.indexOf("://") > -1);
if(!doc){
return;
}
head = qs(doc, "head");
base = qs(head, "base");
if(!base) {
base = doc.createElement("base");
head.insertBefore(base, head.firstChild);
}
// Fix for Safari crashing if the url doesn't have an origin
if (!absolute && window && window.location) {
url = window.location.origin + url;
}
base.setAttribute("href", url);
}
export function replaceCanonical(doc, section){
var head;
var link;
var url = section.canonical;
if(!doc){
return;
}
head = qs(doc, "head");
link = qs(head, "link[rel='canonical']");
if (link) {
link.setAttribute("href", url);
} else {
link = doc.createElement("link");
link.setAttribute("rel", "canonical");
link.setAttribute("href", url);
head.appendChild(link);
}
}
export function replaceMeta(doc, section){
var head;
var meta;
var id = section.idref;
if(!doc){
return;
}
head = qs(doc, "head");
meta = qs(head, "link[property='dc.identifier']");
if (meta) {
meta.setAttribute("content", id);
} else {
meta = doc.createElement("meta");
meta.setAttribute("name", "dc.identifier");
meta.setAttribute("content", id);
head.appendChild(meta);
}
}
// TODO: move me to Contents
export function replaceLinks(contents, fn) {
var links = contents.querySelectorAll("a[href]");
if (!links.length) {
return;
}
var base = qs(contents.ownerDocument, "base");
var location = base ? base.getAttribute("href") : undefined;
var replaceLink = function(link){
var href = link.getAttribute("href");
if(href.indexOf("mailto:") === 0){
return;
}
var absolute = (href.indexOf("://") > -1);
if(absolute){
link.setAttribute("target", "_blank");
}else{
var linkUrl;
try {
linkUrl = new Url(href, location);
} catch(error) {
// NOOP
}
link.onclick = function(){
if(linkUrl && linkUrl.hash) {
fn(linkUrl.Path.path + linkUrl.hash);
} else if(linkUrl){
fn(linkUrl.Path.path);
} else {
fn(href);
}
return false;
};
}
}.bind(this);
for (var i = 0; i < links.length; i++) {
replaceLink(links[i]);
}
}
export function substitute(content, urls, replacements) {
urls.forEach(function(url, i){
if (url && replacements[i]) {
// Account for special characters in the file name.
// See https://stackoverflow.com/a/6318729.
url = url.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
content = content.replace(new RegExp(url, "g"), replacements[i]);
}
});
return content;
}
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