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-rw-r--r--main_background.js48
1 files changed, 30 insertions, 18 deletions
diff --git a/main_background.js b/main_background.js
index 65ffe60..324c68e 100644
--- a/main_background.js
+++ b/main_background.js
@@ -1064,6 +1064,7 @@ async function editHtml(html, documentUrl, tabId, frameId, whitelisted){
// Do not process inline scripts
scripts = [];
} else {
+ let dejaVu = new Map(); // deduplication map & edited script cache
let modified = false;
// Deal with intrinsic events
let intrinsecindex = 0;
@@ -1071,21 +1072,27 @@ async function editHtml(html, documentUrl, tabId, frameId, whitelisted){
for (let element of html_doc.all) {
let line = -1;
for (let attr of element.attributes) {
- if (attr.name.startsWith("on") || (attr.name === "href" && attr.value.toLowerCase().startsWith("javascript:"))){
+ let {name, value} = attr;
+ value = value.trim();
+ if (name.startsWith("on") || (name === "href" && value.toLowerCase().startsWith("javascript:"))){
intrinsecindex++;
if (line === -1) {
line = findLine(intrinsicFinder);
}
try {
- let url = `view-source:${documentUrl}#line${line}(<${element.tagName} ${attr.name}>)(${intrinsicIndex})`;
- let edited = await get_script(attr.value, url, tabId, whitelist.contains(url));
- if (edited) {
- let value = edited;
- if (value !== attr.value) {
- modified = true;
- attr.value = value;
- }
- }
+ let key = `<${element.tagName} ${name}="${value}">`;
+ let edited;
+ if (dejaVu.has(key)) {
+ edited = dejaVu.get(key);
+ } else {
+ let url = `view-source:${documentUrl}#line${line}(<${element.tagName} ${name}>)\n${encodeURIComponent(value.trim())}`;
+ edited = await get_script(value, url, tabId, whitelist.contains(documentUrl));
+ dejaVu.set(key, edited);
+ }
+ if (edited && edited !== value) {
+ modified = true;
+ attr.value = edited;
+ }
} catch (e) {
console.error(e);
}
@@ -1099,14 +1106,19 @@ async function editHtml(html, documentUrl, tabId, frameId, whitelisted){
let script = scripts[i];
let line = findLine(scriptFinder);
if (!script.src && !(script.type && script.type !== "text/javascript")) {
- let source = script.textContent;
- let url = `view-source:${documentUrl}#line${line}(<SCRIPT>)(${i})`;
- let edited = await get_script(source, url, tabId, whitelisted, i);
- if (edited) {
- let edited_source = edited[0];
- let unedited_source = source.trim();
- if (edited_source.trim() !== unedited_source) {
- script.textContent = edited_source;
+ let source = script.textContent.trim();
+ let editedSource;
+ if (dejaVu.has(source)) {
+ editedSource = dejaVu.get(source);
+ } else {
+ let url = `view-source:${documentUrl}#line${line}(<SCRIPT>)\n${encodeURIComponent(source)}`;
+ let edited = await get_script(source, url, tabId, whitelisted, i);
+ editedSource = edited && edited[0].trim();
+ dejaVu.set(url, editedSource);
+ }
+ if (editedSource) {
+ if (source !== editedSource) {
+ script.textContent = editedSource;
modified = modifiedInline = true;
}
}