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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use super::language_info::LanguageInfo;
use crate::std::{
env::current_exe,
fs::File,
io::{BufRead, BufReader, Read},
path::Path,
};
use anyhow::Context;
use zip::read::ZipArchive;
/// Read the appropriate localization fluent definitions from the omnijar files.
///
/// Returns (locale name, fluent definitions).
pub fn read() -> anyhow::Result<LanguageInfo> {
let mut path = current_exe().context("failed to get current executable")?;
path.pop();
path.push("omni.ja");
let mut zip = read_omnijar_file(&path)?;
let locales = {
let buf = BufReader::new(
zip.by_name("res/multilocale.txt")
.context("failed to read multilocale file in zip archive")?,
);
let line = buf
.lines()
.next()
.ok_or(anyhow::anyhow!("multilocale file was empty"))?
.context("failed to read first line of multilocale file")?;
line.split(",")
.map(|s| s.trim().to_owned())
.collect::<Vec<_>>()
};
let (locale, ftl_definitions) = 'defs: {
for locale in &locales {
match read_strings(locale, &mut zip) {
Ok(v) => break 'defs (locale.to_string(), v),
Err(e) => log::warn!("{e:#}"),
}
}
anyhow::bail!("failed to find any usable localized strings in the omnijar")
};
// The brand ftl is in the browser omnijar.
path.pop();
path.push("browser");
path.push("omni.ja");
let ftl_branding = 'branding: {
for locale in &locales {
match read_branding(&locale, &mut zip) {
Ok(v) => break 'branding v,
Err(e) => log::warn!("failed to read branding from omnijar: {e:#}"),
}
}
log::info!("using fallback branding info");
LanguageInfo::default().ftl_branding
};
Ok(LanguageInfo {
identifier: locale,
ftl_definitions,
ftl_branding,
})
}
/// Read the localized strings from the given zip archive (omnijar).
fn read_strings(locale: &str, archive: &mut ZipArchive<File>) -> anyhow::Result<String> {
let mut file = archive
.by_name(&format!(
"localization/{locale}/crashreporter/crashreporter.ftl"
))
.with_context(|| format!("failed to locate localization file for {locale}"))?;
let mut ftl_definitions = String::new();
file.read_to_string(&mut ftl_definitions)
.with_context(|| format!("failed to read localization file for {locale}"))?;
Ok(ftl_definitions)
}
/// Read the branding information from the given zip archive (omnijar).
fn read_branding(locale: &str, archive: &mut ZipArchive<File>) -> anyhow::Result<String> {
let mut file = archive
.by_name(&format!("localization/{locale}/branding/brand.ftl"))
.with_context(|| format!("failed to locate branding localization file for {locale}"))?;
let mut s = String::new();
file.read_to_string(&mut s)
.with_context(|| format!("failed to read branding localization file for {locale}"))?;
Ok(s)
}
fn read_omnijar_file(path: &Path) -> anyhow::Result<ZipArchive<File>> {
ZipArchive::new(
File::open(&path).with_context(|| format!("failed to open {}", path.display()))?,
)
.with_context(|| format!("failed to read zip archive in {}", path.display()))
}
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