pmOS-tweaks/mobile-config-firefox
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Combine the CSS files on FF startup

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Instead of combining the CSS files during make, just install all of the
fragments and let mobile-config-autoconfig.js combine them.
This commit is contained in:
Oliver Smith 2023-04-06 10:49:21 +00:00
parent d676f135a8
commit fe45bbc8dc
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3 changed files with 150 additions and 54 deletions
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164
src/mobile-config-autoconfig.js
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@ -10,6 +10,7 @@ Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/FileUtils.jsm");
var updated = false;
var fragments_cache = {}; // cache for css_file_get_fragments()
// Create <profile>/chrome/ directory if not already present
var chromeDir = Services.dirsvc.get("ProfD", Ci.nsIFile);
@ -81,48 +82,131 @@ function set_default_prefs() {
defaultPref('browser.newtabpage.enabled', true);
}
// Get an array of paths to the fragments for one CSS file
// name: either "userChrome" or "userContent"
function css_file_get_fragments(name) {
if (name in fragments_cache)
return fragments_cache[name];
var ret = [];
var path = "/etc/mobile-config-firefox/" + name + ".files";
log("Reading fragments from file: " + path);
var file = new FileUtils.File(path);
var istream = Cc["@mozilla.org/network/file-input-stream;1"].
createInstance(Components.interfaces.nsIFileInputStream);
istream.init(file, 0x01, 0444, 0);
istream.QueryInterface(Components.interfaces.nsILineInputStream);
var has_more;
do {
var line = {};
has_more = istream.readLine(line);
ret.push("/etc/mobile-config-firefox/" + line.value);
} while (has_more);
istream.close();
fragments_cache[name] = ret;
return ret;
}
// Create a nsIFile object with one of the CSS files in the user's profile as
// path. The file doesn't need to exist at this point.
// name: either "userChrome" or "userContent"
function css_file_get(name) {
var ret = chromeDir.clone();
ret.append(name + ".css");
return ret;
}
// Delete either userChrome.css or userContent.css inside the user's profile if
// they have an older timestamp than the CSS fragments (or list of CSS
// fragments) installed system-wide.
// name: either "userChrome" or "userContent"
// file: return of css_file_get()
function css_file_delete_outdated(name, file) {
var depends = css_file_get_fragments(name).slice(); /* copy the array */
depends.push("/etc/mobile-config-firefox/" + name + ".files");
for (var i in depends) {
var depend = depends[i];
var file_depend = new FileUtils.File(depend);
if (file.lastModifiedTime < file_depend.lastModifiedTime) {
log("Removing outdated file: " + file.path + " (newer: "
+ depend + ")");
file.remove(false);
return;
}
}
log("File is up-to-date: " + file.path);
return;
}
// Create userChrome.css / userContent.css in the user's profile, based on the
// CSS fragments stored in /etc/mobile-config-firefox.
// name: either "userChrome" or "userContent"
// file: return of css_file_get()
function css_file_merge(name, file) {
log("Creating CSS file from fragments: " + file.path);
var ostream = Cc["@mozilla.org/network/file-output-stream;1"].
createInstance(Components.interfaces.nsIFileOutputStream);
ostream.init(file, 0x02 | 0x08 | 0x20, 0644, 0);
var fragments = css_file_get_fragments(name);
for (var i in fragments) {
var line;
var fragment = fragments[i];
log("- " + fragment);
line = "/* === " + fragment + " === */\n"
ostream.write(line, line.length);
var file_fragment = new FileUtils.File(fragment);
var istream = Cc["@mozilla.org/network/file-input-stream;1"].
createInstance(Components.interfaces.nsIFileInputStream);
istream.init(file_fragment, 0x01, 0444, 0);
istream.QueryInterface(Components.interfaces.nsILineInputStream);
var has_more;
do {
var line = {};
has_more = istream.readLine(line);
line = line.value + "\n";
ostream.write(line, line.length);
} while (has_more);
istream.close();
}
ostream.close();
updated = true;
}
function css_files_update() {
var ff_version = get_firefox_version();
log("Firefox version: " + ff_version);
var names = ["userChrome", "userContent"];
for (var i in names) {
var name = names[i];
var file = css_file_get(name);
if (file.exists()) {
css_file_delete_outdated(name, file);
}
if (!file.exists()) {
css_file_merge(name, file);
}
}
}
log("Running mobile-config-autoconfig.js");
var ff_version = get_firefox_version();
log("Firefox version: " + ff_version);
// Create nsIFile objects for userChrome.css in <profile>/chrome/ and in /etc/
var chromeFile = chromeDir.clone();
chromeFile.append("userChrome.css");
var defaultChrome = new FileUtils.File("/etc/mobile-config-firefox/userChrome.css");
// Remove the existing userChrome.css if older than the installed one
if (chromeFile.exists() && defaultChrome.exists() &&
chromeFile.lastModifiedTime < defaultChrome.lastModifiedTime) {
log("Removing outdated userChrome.css from profile");
chromeFile.remove(false);
}
// Copy userChrome.css to <profile>/chrome/
if (!chromeFile.exists()) {
log("Copying userChrome.css from /etc/mobile-config-firefox to profile");
defaultChrome.copyTo(chromeDir, "userChrome.css");
updated = true;
}
// Create nsIFile objects for userContent.css in <profile>/chrome/ and in /etc/
var contentFile = chromeDir.clone();
contentFile.append("userContent.css");
var defaultContent = new FileUtils.File("/etc/mobile-config-firefox/userContent.css");
// Remove the existing userContent.css if older than the installed one
if (contentFile.exists() && defaultContent.exists() &&
contentFile.lastModifiedTime < defaultContent.lastModifiedTime) {
log("Removing outdated userContent.css from profile");
contentFile.remove(false);
}
// Copy userContent.css to <profile>/chrome/
if (!contentFile.exists()) {
log("Copying userContent.css from /etc/mobile-config-firefox to profile");
defaultContent.copyTo(chromeDir, "userContent.css");
updated = true;
}
css_files_update();
// Restart Firefox immediately if one of the files got updated
if (updated == true)