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https://github.com/osnr/TabFS.git
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more refactoring: standardize fromStringMaker to use arrays
resources and screenshot.png seem to still work
This commit is contained in:
Omar Rizwan
parent
dc71428fbd
commit
583611af58
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@ -40,8 +40,7 @@ function pathComponent(path, i) {
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return components[i >= 0 ? i : components.length + i];
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}
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function sanitize(s) { return s.replace(/[^A-Za-z0-9_\-\.]/gm, '_'); }
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function utf8(str, offset, size) {
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// converts to UTF8, then takes slice
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function utf8(str) {
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var utf8 = [];
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for (var i=0; i < str.length; i++) {
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var charcode = str.charCodeAt(i);
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@ -65,18 +64,7 @@ function utf8(str, offset, size) {
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0x80 | (charcode & 0x3f));
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}
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}
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return String.fromCharCode(...utf8.slice(offset, offset + size))
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}
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function stringSize(str) {
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// returns the byte length of an utf8 string
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var s = str.length;
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for (var i=str.length-1; i>=0; i--) {
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var code = str.charCodeAt(i);
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if (code > 0x7f && code <= 0x7ff) s++;
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else if (code > 0x7ff && code <= 0xffff) s+=2;
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if (code >= 0xDC00 && code <= 0xDFFF) i--; //trail surrogate
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}
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return s + 1;
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return utf8;
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}
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const TabManager = {
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@ -127,10 +115,6 @@ const BrowserState = { lastFocusedWindowId: null };
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});
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})();
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/* if I could specify a custom editor interface for all the routing
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below ... I would highlight the route names in blocks of some color
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that sticks out, and let you collapse them. then you could get a
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view of what the whole filesystem looks like at a glance. */
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const router = {};
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const Cache = {
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@ -145,6 +129,24 @@ const Cache = {
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getObjectForHandle(handle) { return this.store[handle]; },
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removeObjectForHandle(handle) { delete this.store[handle]; }
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};
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function toArray(stringOrArray) {
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if (typeof stringOrArray == 'string') { return utf8(stringOrArray); }
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else { return stringOrArray; }
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}
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const fromStringMaker = stringMaker => ({
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async getattr({path}) {
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return {
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st_mode: unix.S_IFREG | 0444,
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st_nlink: 1,
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st_size: toArray(await stringMaker(path)).length
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};
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},
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async open({path}) { return { fh: Cache.storeObject(toArray(await stringMaker(path))) }; },
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async read({path, fh, size, offset}) {
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return { buf: String.fromCharCode(...Cache.getObjectForHandle(fh).slice(offset, offset + size)) }
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},
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async release({fh}) { Cache.removeObjectForHandle(fh); return {}; }
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});
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router["/tabs/by-id"] = {
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async readdir() {
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@ -153,20 +155,6 @@ router["/tabs/by-id"] = {
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}
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};
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(function() {
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const fromStringMaker = stringMaker => ({
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async getattr({path}) {
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return {
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st_mode: unix.S_IFREG | 0444,
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st_nlink: 1,
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st_size: stringSize(stringMaker(path))
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};
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},
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async open({path}) { return { fh: Cache.storeObject(await stringMaker(path)) }; },
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async read({path, fh, size, offset}) {
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return { buf: utf8(Cache.getObjectForHandle(fh), offset, size) }
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},
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async release({fh}) { Cache.removeObjectForHandle(fh); return {}; }
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});
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const withTab = handler => fromStringMaker(async path => {
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const tabId = parseInt(pathComponent(path, -2));
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const tab = await browser.tabs.get(tabId);
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@ -193,81 +181,35 @@ router["/tabs/by-id/*/screenshot.png"] = {
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const slice = Cache.getObjectForHandle(fh).slice(offset, offset + size);
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return { buf: String.fromCharCode(...slice) };
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},
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async release({fh}) { Cache.removeObjectForHandle(fh); }
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async release({fh}) { Cache.removeObjectForHandle(fh); return {}; }
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};
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router["/tabs/by-id/*/resources"] = {
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async opendir({path}) {
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const tabId = parseInt(pathComponent(path, -2));
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await TabManager.debugTab(tabId);
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return { fh: 0 };
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},
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async readdir({path}) {
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const tabId = parseInt(pathComponent(path, -2));
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await TabManager.debugTab(tabId);
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const {frameTree} = await sendDebuggerCommand(tabId, "Page.getResourceTree", {});
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return { entries: frameTree.resources.map(r => sanitize(String(r.url).slice(0, 200))) };
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}
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};
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router["/tabs/by-id/*/resources/*"] = {
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async getattr({path}) {
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// FIXME: cache the file
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const tabId = parseInt(pathComponent(path, -3));
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const suffix = pathComponent(path, -1);
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router["/tabs/by-id/*/resources/*"] = fromStringMaker(async path => {
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const [tabId, suffix] = [parseInt(pathComponent(path, -3)), pathComponent(path, -1)];
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await TabManager.debugTab(tabId); await TabManager.enableDomainForTab(tabId, "Page");
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await TabManager.debugTab(tabId); await TabManager.enableDomainForTab(tabId, "Page");
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const {frameTree} = await sendDebuggerCommand(tabId, "Page.getResourceTree", {});
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for (let resource of frameTree.resources) {
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const resourceSuffix = sanitize(String(resource.url).slice(0, 200));
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if (resourceSuffix === suffix) {
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let {base64Encoded, content} = await sendDebuggerCommand(tabId, "Page.getResourceContent", {
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frameId: frameTree.frame.id,
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url: resource.url
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});
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if (base64Encoded) {
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content = atob(content);
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}
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return {
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st_mode: unix.S_IFREG | 0444,
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st_nlink: 1,
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st_size: stringSize(content) // FIXME
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};
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}
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const {frameTree} = await sendDebuggerCommand(tabId, "Page.getResourceTree", {});
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for (let resource of frameTree.resources) {
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const resourceSuffix = sanitize(String(resource.url).slice(0, 200));
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if (resourceSuffix === suffix) {
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let {base64Encoded, content} = await sendDebuggerCommand(tabId, "Page.getResourceContent", {
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frameId: frameTree.frame.id,
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url: resource.url
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});
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if (base64Encoded) { return Uint8Array.from(atob(content), c => c.charCodeAt(0)); }
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return content;
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}
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},
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async open({path}) {
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// FIXME: cache the file.
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const tabId = parseInt(pathComponent(path, -3));
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await TabManager.debugTab(tabId); await TabManager.enableDomainForTab(tabId, "Page");
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return {fh: 3};
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},
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async read({path, fh, size, offset}) {
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const tabId = parseInt(pathComponent(path, -3));
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const suffix = pathComponent(path, -1);
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const {frameTree} = await sendDebuggerCommand(tabId, "Page.getResourceTree", {}); // FIXME: cache this
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for (let resource of frameTree.resources) {
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const resourceSuffix = sanitize(String(resource.url).slice(0, 200));
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if (resourceSuffix === suffix) {
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let {base64Encoded, content} = await sendDebuggerCommand(tabId, "Page.getResourceContent", {
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frameId: frameTree.frame.id,
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url: resource.url
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});
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if (base64Encoded) {
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const arr = Uint8Array.from(atob(content), c => c.charCodeAt(0));
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const slice = arr.slice(offset, offset + size);
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return { buf: String.fromCharCode(...slice) };
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} else {
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return { buf: utf8(content, offset, size) };
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}
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}
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}
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throw new UnixError(unix.ENOENT);
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},
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async release({path, fh}) {
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// FIXME: free the debug?
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return {};
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}
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};
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throw new UnixError(unix.ENOENT);
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});
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router["/tabs/by-id/*/control"] = {
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// echo remove >> mnt/tabs/by-id/1644/control
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