parent
1de0633833
commit
76e359ea89
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*.mo
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msgid "title"
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msgstr "Tegaki Tuesday"
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@ -0,0 +1,2 @@
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msgid "title"
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msgstr "手書きの火曜日"
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use std::{collections::HashMap, fs::{self, File}, io::BufReader, process::Command};
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use derive_more::From;
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use rocket_dyn_templates::tera::{self, Value};
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use gettext::Catalog;
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#[derive(From, Debug)]
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pub enum LoadCatalogsError {
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Io(std::io::Error),
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Parse(gettext::Error),
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MissingDefaultLanguage,
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}
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const DEFAULT: &str = "ja";
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pub fn load_catalogs() -> Result<HashMap<String, Catalog>, LoadCatalogsError> {
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let mut catalogs = HashMap::new();
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for file in fs::read_dir("i18n")? {
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let file = file?;
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let path = file.path();
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if !file.file_type()?.is_file() || !path.extension().map(|extension| extension.eq("po")).unwrap_or(false) {
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continue;
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}
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let language_code = path
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.file_stem()
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.expect("Invalid translation file name")
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.to_string_lossy()
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.to_string();
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let po_file_path = path;
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let mo_file_path = format!("i18n/{}.mo", language_code);
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Command::new("msgfmt")
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.arg(&po_file_path)
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.arg("-o")
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.arg(&mo_file_path)
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.output()?;
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catalogs.insert(language_code, Catalog::parse(BufReader::new(File::open(mo_file_path)?))?);
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}
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if !catalogs.contains_key(DEFAULT) {
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return Err(LoadCatalogsError::MissingDefaultLanguage);
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}
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Ok(catalogs)
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}
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pub fn i18n_filter(value: &Value, _args: &HashMap<String, Value>, catalogs: &HashMap<String, Catalog>) -> tera::Result<Value> {
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let key = value.as_str().ok_or_else(|| {
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tera::Error::msg("The translation key must be a string")
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})?;
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let translation = catalogs
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.get(DEFAULT)
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.expect("Missing catalog")
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.gettext(key);
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Ok(Value::String(translation.to_owned()))
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}
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