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fence withTab and fromScript into scope

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This commit is contained in:
Omar Rizwan 2020-12-11 15:45:19 -08:00
parent d3b376582f
commit 1dd02874a3
1 changed files with 35 additions and 38 deletions
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73
extension/background.js
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@ -133,40 +133,6 @@ const BrowserState = { lastFocusedWindowId: null };
view of what the whole filesystem looks like at a glance. */
const router = {};
function withTab(handler) {
return {
async getattr({path}) {
const tab = await browser.tabs.get(parseInt(pathComponent(path, -2)));
return {
st_mode: unix.S_IFREG | 0444,
st_nlink: 1,
st_size: stringSize(handler(tab))
};
},
async open({path}) { return { fh: 0 }; },
async read({path, fh, size, offset}) {
const tab = await browser.tabs.get(parseInt(pathComponent(path, -2)));
return { buf: utf8(handler(tab), offset, size) };
}
};
}
function fromScript(code) {
return {
async getattr({path}) {
const tabId = parseInt(pathComponent(path, -2));
return {
st_mode: unix.S_IFREG | 0444,
st_nlink: 1,
st_size: stringSize((await browser.tabs.executeScript(tabId, {code}))[0])
};
},
async open({path}) { return { fh: 0 }; },
async read({path, fh, size, offset}) {
const tabId = parseInt(pathComponent(path, -2));
return { buf: utf8((await browser.tabs.executeScript(tabId, {code}))[0], offset, size) }
}
};
}
const Cache = {
// used when you open a file to cache the content we got from the browser
// until you close that file.
@ -186,14 +152,45 @@ router["/tabs/by-id"] = {
return { entries: tabs.map(tab => String(tab.id)) };
}
};
router["/tabs/by-id/*/url"] = withTab(tab => tab.url + "\n");
router["/tabs/by-id/*/title"] = withTab(tab => tab.title + "\n");
router["/tabs/by-id/*/text"] = fromScript(`document.body.innerText`);
(function() {
const withTab = handler => ({
async getattr({path}) {
const tab = await browser.tabs.get(parseInt(pathComponent(path, -2)));
return {
st_mode: unix.S_IFREG | 0444,
st_nlink: 1,
st_size: stringSize(handler(tab))
};
},
async open({path}) { return { fh: 0 }; },
async read({path, fh, size, offset}) {
const tab = await browser.tabs.get(parseInt(pathComponent(path, -2)));
return { buf: utf8(handler(tab), offset, size) };
}
});
const fromScript = code => ({
async getattr({path}) {
const tabId = parseInt(pathComponent(path, -2));
return {
st_mode: unix.S_IFREG | 0444,
st_nlink: 1,
st_size: stringSize((await browser.tabs.executeScript(tabId, {code}))[0])
};
},
async open({path}) { return { fh: 0 }; },
async read({path, fh, size, offset}) {
const tabId = parseInt(pathComponent(path, -2));
return { buf: utf8((await browser.tabs.executeScript(tabId, {code}))[0], offset, size) }
}
});
router["/tabs/by-id/*/url"] = withTab(tab => tab.url + "\n");
router["/tabs/by-id/*/title"] = withTab(tab => tab.title + "\n");
router["/tabs/by-id/*/text"] = fromScript(`document.body.innerText`);
})();
router["/tabs/by-id/*/screenshot.png"] = {
async open({path}) {
const tabId = parseInt(pathComponent(path, -2));
await TabManager.debugTab(tabId); await TabManager.enableDomainForTab(tabId, "Page");
// FIXME: cache.
const {data} = await sendDebuggerCommand(tabId, "Page.captureScreenshot");
return { fh: Cache.storeObject(Uint8Array.from(atob(data), c => c.charCodeAt(0))) };