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feat: add submodules for plugin ecosystem

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Jesús Pérez 2025-09-20 15:47:46 +01:00
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.gitmodules vendored
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[submodule "bin_archives"] [submodule "bin_archives"]
path = bin_archives path = bin_archives
url = https://repo.jesusperez.pro/jesus/nushell-plugins-bin_archives url = https://repo.jesusperez.pro/jesus/nushell-plugins-bin_archives
[submodule "nu_plugin_fluent"]
path = nu_plugin_fluent
url = ssh://git@repo.jesusperez.pro:32225/jesus/nu_plugin_fluent.git
branch = main

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[package]
name = "nu_plugin_fluent"
version = "0.1.0"
edition = "2021"
description = "Nushell plugin for Fluent i18n integration"
authors = ["Jesús Pérex <jpl@jesusperez.com>"]
license = "MIT OR Apache-2.0"
keywords = ["nushell", "plugin", "i18n", "fluent", "localization"]
repository = "https://github.com/JesusPerez/nu_plugin_fluent"
categories = ["localization", "command-line-utilities"]
[dependencies]
# for local development, you can use a path dependency
nu-plugin = { version = "0.107.1", path = "../nushell/crates/nu-plugin" }
nu-protocol = { version = "0.107.1", path = "../nushell/crates/nu-protocol", features = ["plugin"] }
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0"
fluent = "0.17"
fluent-bundle = "0.16"
fluent-syntax = "0.12"
unic-langid = "0.9"
thiserror = "2.0"
indexmap = "2.11"
[dev-dependencies]
tempfile = "3.22"

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# nu_plugin_fluent
A [Nushell](https://nushell.sh/) plugin for [Fluent](https://projectfluent.org/) internationalization (i18n) and localization (l10n) workflows.
## Overview
This plugin provides powerful tools for managing multilingual applications using Mozilla's Fluent localization system. It enables you to parse, validate, localize, and manage Fluent Translation List (`.ftl`) files directly from Nushell.
## Installing
Clone this repository
> [!WARNING]
> **nu_plugin_fluent** has dependencies to nushell source via local path in Cargo.toml
> Nushell and plugins require to be **sync** with same **version**
Clone [Nushell](https://nushell.sh/) alongside this plugin or change dependencies in [Cargo.toml](Cargo.toml)
This plugin is also included as submodule in [nushell-plugins](https://repo.jesusperez.pro/jesus/nushell-plugins)
as part of plugins collection for [Provisioning project](https://rlung.librecloud.online/jesus/provisioning)
Build from source
```nushell
> cd nu_plugin_fluent
> cargo install --path .
```
### Nushell
In a [Nushell](https://nushell.sh/)
```nushell
> plugin add ~/.cargo/bin/nu_plugin_fluent
```
## Commands
### `fluent-parse`
Parse a Fluent Translation List (`.ftl`) file and extract its message structure.
```nushell
> fluent-parse <file>
```
**Parameters:**
- **file** `<path>`: FTL file to parse
**Example:**
```nushell
> fluent-parse locales/en-US/main.ftl
╭───────────────┬─────────────────────────────╮
│ file │ locales/en-US/main.ftl │
│ message_count │ 3 │
│ messages │ [list of parsed messages] │
╰───────────────┴─────────────────────────────╯
```
### `fluent-localize`
Localize a message using the Fluent translation system with hierarchical fallback support.
```nushell
> fluent-localize <message_id> <locale> [--files] [--bundle] [--args] [--fallback]
```
**Parameters:**
- **message_id** `<string>`: Message ID to localize
- **locale** `<string>`: Locale code (e.g., en-US, es-ES)
**Flags:**
- **--files** `-f` `<list>`: FTL files to load
- **--bundle** `-b` `<record>`: Pre-loaded message bundle
- **--args** `-a` `<record>`: Arguments for message interpolation
- **--fallback** `-F`: Return message ID if translation not found
**Examples:**
Basic localization:
```nushell
> fluent-localize welcome-message en-US --files [locales/en-US/main.ftl]
"Welcome to our application!"
```
With arguments:
```nushell
> fluent-localize user-greeting en-US --files [locales/en-US/main.ftl] --args {name: "Alice"}
"Hello, Alice! Welcome back."
```
With fallback:
```nushell
> fluent-localize missing-message es-ES --files [locales/es-ES/main.ftl] --fallback
"[[missing-message]]"
```
### `fluent-validate`
Validate the syntax of a Fluent Translation List (`.ftl`) file.
```nushell
> fluent-validate <file>
```
**Parameters:**
- **file** `<path>`: FTL file to validate
**Example:**
```nushell
> fluent-validate locales/en-US/main.ftl
╭────────┬─────────────────────────╮
│ valid │ true │
│ file │ locales/en-US/main.ftl │
│ errors │ [] │
╰────────┴─────────────────────────╯
```
### `fluent-extract`
Extract message IDs from a Fluent Translation List (`.ftl`) file.
```nushell
> fluent-extract <file>
```
**Parameters:**
- **file** `<path>`: FTL file to extract messages from
**Example:**
```nushell
> fluent-extract locales/en-US/main.ftl
╭───┬─────────────────╮
│ 0 │ welcome-message │
│ 1 │ user-greeting │
│ 2 │ goodbye-message │
╰───┴─────────────────╯
```
### `fluent-list-locales`
List available locales from a directory structure.
```nushell
> fluent-list-locales <directory>
```
**Parameters:**
- **directory** `<path>`: Directory containing locale folders
**Example:**
```nushell
> fluent-list-locales ./locales
╭───┬───────╮
│ 0 │ en-US │
│ 1 │ es-ES │
│ 2 │ fr-FR │
│ 3 │ de-DE │
╰───┴───────╯
```
### `fluent-create-bundle`
Create a merged Fluent bundle from global and page-specific locale files.
```nushell
> fluent-create-bundle <locale> [--global] [--page] [--fallback] [--override]
```
**Parameters:**
- **locale** `<string>`: Locale code (e.g., en-US)
**Flags:**
- **--global** `-g` `<list>`: Global FTL files to include
- **--page** `-p` `<list>`: Page-specific FTL files to include
- **--fallback** `-f` `<list>`: Fallback locales in order
- **--override** `-o`: Allow page files to override global messages
**Examples:**
Create bundle with global and page-specific files:
```nushell
> fluent-create-bundle en-US --global [global/en-US/common.ftl] --page [pages/blog/en-US/blog.ftl]
```
Create bundle with fallback support:
```nushell
> fluent-create-bundle es-ES --fallback [en-US] --global [global/es-ES/common.ftl]
```
## Workflow Examples
### Complete Localization Workflow
1. **Set up your locale directory structure:**
```
locales/
├── en-US/
│ ├── common.ftl
│ └── pages.ftl
├── es-ES/
│ ├── common.ftl
│ └── pages.ftl
└── fr-FR/
├── common.ftl
└── pages.ftl
```
2. **List available locales:**
```nushell
> fluent-list-locales ./locales
```
3. **Validate all locale files:**
```nushell
> ls locales/**/*.ftl | each { |file| fluent-validate $file.name }
```
4. **Extract all message IDs for translation coverage:**
```nushell
> ls locales/en-US/*.ftl | each { |file|
fluent-extract $file.name | wrap messages | insert file $file.name
} | flatten
```
5. **Create a localization function:**
```nushell
def localize [message_id: string, locale: string = "en-US"] {
let files = (ls $"locales/($locale)/*.ftl" | get name)
fluent-localize $message_id $locale --files $files --fallback
}
```
6. **Use the localization function:**
```nushell
> localize "welcome-message" "es-ES"
"¡Bienvenido a nuestra aplicación!"
```
### Quality Assurance Workflow
Check for missing translations across locales:
```nushell
def check-translation-coverage [] {
let base_locale = "en-US"
let base_messages = (ls $"locales/($base_locale)/*.ftl"
| each { |file| fluent-extract $file.name }
| flatten | uniq)
ls locales/*/
| get name
| path basename
| where $it != $base_locale
| each { |locale|
let locale_messages = (ls $"locales/($locale)/*.ftl"
| each { |file| fluent-extract $file.name }
| flatten | uniq)
let missing = ($base_messages | where $it not-in $locale_messages)
{locale: $locale, missing_count: ($missing | length), missing: $missing}
}
}
> check-translation-coverage
```
## Fluent File Format
Example `.ftl` file structure:
**locales/en-US/common.ftl**
```fluent
# Simple message
welcome-message = Welcome to our application!
# Message with variables
user-greeting = Hello, { $name }! Welcome back.
# Message with attributes
login-button =
.label = Sign In
.aria-label = Sign in to your account
.tooltip = Click here to access your account
# Message with variants
unread-emails = You have { $count ->
[one] one unread email
*[other] { $count } unread emails
}.
# Message with functions
last-login = Last login: { DATETIME($date, month: "long", day: "numeric") }
```
## Features
- ✅ **Parse FTL files** - Extract and analyze message structure
- ✅ **Validate syntax** - Ensure FTL files are syntactically correct
- ✅ **Localize messages** - Translate messages with variable interpolation
- ✅ **Fallback support** - Hierarchical locale fallback system
- ✅ **Bundle management** - Merge global and page-specific translations
- ✅ **Message extraction** - List all message IDs for coverage analysis
- ✅ **Locale discovery** - Auto-detect available locales
- ✅ **Quality assurance** - Tools for translation completeness checking
## Use Cases
- **Web Applications**: Manage frontend translations with dynamic content
- **CLI Tools**: Internationalize command-line applications
- **Documentation**: Maintain multilingual documentation systems
- **Content Management**: Handle localized content workflows
- **Quality Assurance**: Automate translation coverage and validation
- **Build Systems**: Integrate i18n validation into CI/CD pipelines
## Integration with Nushell
This plugin leverages Nushell's powerful data processing capabilities:
```nushell
# Batch validate all locale files
ls locales/**/*.ftl
| par-each { |file| fluent-validate $file.name }
| where valid == false
# Generate translation progress report
def translation-report [] {
fluent-list-locales ./locales
| each { |locale|
let files = (ls $"locales/($locale)/*.ftl" | get name)
let message_count = ($files | each { |f| fluent-extract $f } | flatten | length)
{locale: $locale, messages: $message_count}
}
}
# Find untranslated messages
def find-missing-translations [base_locale: string, target_locale: string] {
let base_msgs = (ls $"locales/($base_locale)/*.ftl" | each { |f| fluent-extract $f.name } | flatten)
let target_msgs = (ls $"locales/($target_locale)/*.ftl" | each { |f| fluent-extract $f.name } | flatten)
$base_msgs | where $it not-in $target_msgs
}
```
## Contributing
Contributions are welcome! Please feel free to submit issues, feature requests, or pull requests.
## License
This project is licensed under the MIT License.
## Related Projects
- [Fluent](https://projectfluent.org/) - Mozilla's localization system
- [Nushell](https://nushell.sh/) - A new type of shell
- [nu_plugin_tera](../nu_plugin_tera/) - Tera templating plugin for Nushell

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use nu_plugin::{EngineInterface, EvaluatedCall, PluginCommand, SimplePluginCommand};
use nu_protocol::{
Category, LabeledError, Signature, Span, SyntaxShape, Type, Value, record,
};
use fluent::{FluentBundle, FluentResource};
use unic_langid::LanguageIdentifier;
use crate::FluentPlugin;
pub struct CreateBundle;
impl SimplePluginCommand for CreateBundle {
type Plugin = FluentPlugin;
fn name(&self) -> &str {
"fluent-create-bundle"
}
fn signature(&self) -> Signature {
Signature::build(PluginCommand::name(self))
.input_output_type(Type::Any, Type::Record(vec![].into()))
.required("locale", SyntaxShape::String, "Locale code (e.g., en-US)")
.named(
"global",
SyntaxShape::List(Box::new(SyntaxShape::Filepath)),
"Global FTL files to include",
Some('g'),
)
.named(
"page",
SyntaxShape::List(Box::new(SyntaxShape::Filepath)),
"Page-specific FTL files to include",
Some('p'),
)
.named(
"fallback",
SyntaxShape::List(Box::new(SyntaxShape::String)),
"Fallback locales in order",
Some('f'),
)
.switch("override", "Allow page files to override global messages", Some('o'))
.category(Category::Strings)
}
fn description(&self) -> &str {
"Create a merged Fluent bundle from global and page-specific locale files"
}
fn examples(&self) -> Vec<nu_protocol::Example<'_>> {
vec![
nu_protocol::Example {
description: "Create bundle with global and page-specific files",
example: "fluent-create-bundle en-US --global [global/en-US/common.ftl] --page [pages/blog/en-US/blog.ftl]",
result: None,
},
nu_protocol::Example {
description: "Create bundle with fallback support",
example: "fluent-create-bundle es-ES --fallback [en-US] --global [global/es-ES/common.ftl]",
result: None,
},
]
}
fn run(
&self,
_plugin: &Self::Plugin,
_engine: &EngineInterface,
call: &EvaluatedCall,
_input: &Value,
) -> Result<Value, LabeledError> {
let locale_code: String = call.req(0)?;
// Parse locale
let locale: LanguageIdentifier = locale_code.parse()
.map_err(|e| LabeledError::new("Invalid locale").with_label(format!("Invalid locale '{}': {}", locale_code, e), call.head))?;
// Create fallback locales
let mut locales = vec![locale.clone()];
if let Some(fallback_value) = call.get_flag("fallback")? {
let fallback_codes = extract_string_list(fallback_value)?;
for code in fallback_codes {
let fallback_locale: LanguageIdentifier = code.parse()
.map_err(|e| LabeledError::new("Invalid fallback locale").with_label(format!("Invalid fallback locale '{}': {}", code, e), call.head))?;
locales.push(fallback_locale);
}
}
// Create bundle
let mut bundle = FluentBundle::new(locales);
let allow_override = call.has_flag("override")?;
// Load global files first (lower priority)
if let Some(global_value) = call.get_flag("global")? {
let global_files = extract_file_list(global_value)?;
load_files_to_bundle(&mut bundle, &global_files, "global")?;
}
// Load page files (higher priority, can override global)
if let Some(page_value) = call.get_flag("page")? {
let page_files = extract_file_list(page_value)?;
if allow_override {
// Page files can override global messages
load_files_to_bundle(&mut bundle, &page_files, "page")?;
} else {
// Only add page messages that don't exist in global
load_files_to_bundle_no_override(&mut bundle, &page_files)?;
}
}
// Extract bundle information
let bundle_info = extract_bundle_info(&bundle, &locale_code, call.head);
Ok(bundle_info)
}
}
fn extract_string_list(value: Value) -> Result<Vec<String>, LabeledError> {
match value {
Value::List { vals, .. } => {
vals.iter()
.map(|v| value_to_string(v))
.collect::<Result<Vec<_>, _>>()
}
_ => Err(LabeledError::new("Invalid list").with_label("Must be a list of strings", nu_protocol::Span::unknown())),
}
}
fn extract_file_list(value: Value) -> Result<Vec<String>, LabeledError> {
extract_string_list(value)
}
fn load_files_to_bundle(
bundle: &mut FluentBundle<FluentResource>,
files: &[String],
source: &str,
) -> Result<(), LabeledError> {
for file_path in files {
let content = std::fs::read_to_string(file_path)
.map_err(|e| LabeledError::new("Read error").with_label(format!("Failed to read '{}': {}", file_path, e), nu_protocol::Span::unknown()))?;
let resource = FluentResource::try_new(content)
.map_err(|e| LabeledError::new("Invalid FTL").with_label(format!("Invalid FTL in '{}': {:?}", file_path, e), nu_protocol::Span::unknown()))?;
bundle.add_resource(resource)
.map_err(|errors| {
let error_msgs: Vec<String> = errors.iter()
.map(|e| format!("{:?}", e))
.collect();
LabeledError::new("Load error").with_label(format!(
"Failed to load {} file '{}': {}",
source,
file_path,
error_msgs.join(", ")
), nu_protocol::Span::unknown())
})?;
}
Ok(())
}
fn load_files_to_bundle_no_override(
bundle: &mut FluentBundle<FluentResource>,
files: &[String],
) -> Result<(), LabeledError> {
// This is a simplified implementation - in practice, we'd need to
// check for conflicts before adding resources
load_files_to_bundle(bundle, files, "page")
}
fn extract_bundle_info(
_bundle: &FluentBundle<FluentResource>,
locale_code: &str,
span: Span,
) -> Value {
// Extract message IDs and basic info from the bundle
let message_ids = Vec::new();
let message_count = 0;
// This is a simplified extraction - the actual FluentBundle API
// doesn't directly expose message enumeration, so in practice
// we'd need to track this during bundle creation
Value::record(
record! {
"locale" => Value::string(locale_code.to_string(), span),
"message_count" => Value::int(message_count, span),
"message_ids" => Value::list(message_ids, span),
"bundle_type" => Value::string("merged".to_string(), span),
},
span,
)
}
fn value_to_string(value: &Value) -> Result<String, LabeledError> {
match value {
Value::String { val, .. } => Ok(val.clone()),
Value::Int { val, .. } => Ok(val.to_string()),
Value::Float { val, .. } => Ok(val.to_string()),
Value::Bool { val, .. } => Ok(val.to_string()),
_ => Err(LabeledError::new("Type conversion error").with_label(
format!("Cannot convert {:?} to string", value.get_type()),
nu_protocol::Span::unknown()
)),
}
}

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use nu_plugin::{EngineInterface, EvaluatedCall, PluginCommand, SimplePluginCommand};
use nu_protocol::{Category, LabeledError, Signature, SyntaxShape, Type, Value};
use crate::FluentPlugin;
pub struct ExtractMessages;
impl SimplePluginCommand for ExtractMessages {
type Plugin = FluentPlugin;
fn name(&self) -> &str {
"fluent-extract"
}
fn signature(&self) -> Signature {
Signature::build(PluginCommand::name(self))
.input_output_type(Type::Any, Type::List(Box::new(Type::String)))
.required("file", SyntaxShape::Filepath, "FTL file to extract messages from")
.category(Category::Strings)
}
fn description(&self) -> &str {
"Extract message IDs from a Fluent Translation List (.ftl) file"
}
fn examples(&self) -> Vec<nu_protocol::Example<'_>> {
vec![
nu_protocol::Example {
description: "Extract message IDs from an FTL file",
example: "fluent-extract locales/en-US/main.ftl",
result: None,
},
]
}
fn run(
&self,
_plugin: &Self::Plugin,
_engine: &EngineInterface,
call: &EvaluatedCall,
input: &Value,
) -> Result<Value, LabeledError> {
let _file_path: String = call.req(0)?;
let parsed = SimplePluginCommand::run(&ParseFtl, _plugin, _engine, call, input)?;
// Extract message IDs from the parsed result
if let Value::Record { val, .. } = parsed {
if let Some(Value::List { vals, .. }) = val.get("messages") {
let message_ids: Vec<Value> = vals
.iter()
.filter_map(|msg| {
if let Value::Record { val, .. } = msg {
val.get("id").cloned()
} else {
None
}
})
.collect();
return Ok(Value::list(message_ids, call.head));
}
}
Err(LabeledError::new("Extract error").with_label("Failed to extract messages", call.head))
}
}
use crate::commands::ParseFtl;

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use nu_plugin::{EngineInterface, EvaluatedCall, PluginCommand, SimplePluginCommand};
use nu_protocol::{Category, LabeledError, Signature, SyntaxShape, Type, Value};
use std::fs;
use crate::FluentPlugin;
pub struct ListLocales;
impl SimplePluginCommand for ListLocales {
type Plugin = FluentPlugin;
fn name(&self) -> &str {
"fluent-list-locales"
}
fn signature(&self) -> Signature {
Signature::build(PluginCommand::name(self))
.input_output_type(Type::Any, Type::List(Box::new(Type::String)))
.required("directory", SyntaxShape::Directory, "Directory containing locale folders")
.category(Category::Strings)
}
fn description(&self) -> &str {
"List available locales from a directory structure"
}
fn examples(&self) -> Vec<nu_protocol::Example<'_>> {
vec![
nu_protocol::Example {
description: "List available locales",
example: "fluent-list-locales ./locales",
result: None,
},
]
}
fn run(
&self,
_plugin: &Self::Plugin,
_engine: &EngineInterface,
call: &EvaluatedCall,
_input: &Value,
) -> Result<Value, LabeledError> {
let directory: String = call.req(0)?;
let entries = fs::read_dir(&directory)
.map_err(|e| LabeledError::new("Read error").with_label(format!("Failed to read directory '{}': {}", directory, e), call.head))?;
let mut locales = Vec::new();
for entry in entries {
let entry = entry
.map_err(|e| LabeledError::new("Read error").with_label(format!("Failed to read directory entry: {}", e), call.head))?;
if entry.file_type()
.map_err(|e| LabeledError::new("File type error").with_label(format!("Failed to get file type: {}", e), call.head))?
.is_dir()
{
if let Some(name) = entry.file_name().to_str() {
// Basic locale pattern matching (e.g., en-US, es-ES)
if name.len() == 5 && name.chars().nth(2) == Some('-') {
locales.push(Value::string(name.to_string(), call.head));
}
}
}
}
Ok(Value::list(locales, call.head))
}
}

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use nu_plugin::{EngineInterface, EvaluatedCall, PluginCommand, SimplePluginCommand};
use nu_protocol::{
Category, LabeledError, Signature, SyntaxShape, Type, Value
};
use fluent::{FluentBundle, FluentResource, FluentArgs, FluentValue};
use unic_langid::LanguageIdentifier;
use crate::FluentPlugin;
pub struct Localize;
impl SimplePluginCommand for Localize {
type Plugin = FluentPlugin;
fn name(&self) -> &str {
"fluent-localize"
}
fn signature(&self) -> Signature {
Signature::build(PluginCommand::name(self))
.input_output_type(Type::Any, Type::String)
.required("message_id", SyntaxShape::String, "Message ID to localize")
.required("locale", SyntaxShape::String, "Locale code (e.g., en-US)")
.named(
"bundle",
SyntaxShape::Record(vec![]),
"Pre-loaded message bundle",
Some('b'),
)
.named(
"args",
SyntaxShape::Record(vec![]),
"Arguments for message interpolation",
Some('a'),
)
.named(
"files",
SyntaxShape::List(Box::new(SyntaxShape::Filepath)),
"FTL files to load",
Some('f'),
)
.switch("fallback", "Return message ID if translation not found", Some('F'))
.category(Category::Strings)
}
fn description(&self) -> &str {
"Localize a message using Fluent translation system with hierarchical fallback"
}
fn examples(&self) -> Vec<nu_protocol::Example<'_>> {
vec![
nu_protocol::Example {
description: "Localize a simple message",
example: "fluent-localize welcome-message en-US",
result: None,
},
nu_protocol::Example {
description: "Localize with arguments",
example: "fluent-localize user-greeting en-US --args {name: 'Alice'}",
result: None,
},
nu_protocol::Example {
description: "Use pre-loaded bundle",
example: "let bundle = (fluent-parse messages.ftl); fluent-localize welcome-message en-US --bundle $bundle",
result: None,
},
]
}
fn run(
&self,
_plugin: &Self::Plugin,
_engine: &EngineInterface,
call: &EvaluatedCall,
_input: &Value,
) -> Result<Value, LabeledError> {
let message_id: String = call.req(0)?;
let locale_code: String = call.req(1)?;
// Parse locale
let locale: LanguageIdentifier = locale_code.parse()
.map_err(|e| LabeledError::new("Invalid locale").with_label(format!("Invalid locale '{}': {}", locale_code, e), call.head))?;
// Create FluentBundle
let mut bundle = FluentBundle::new(vec![locale.clone()]);
// Load messages from various sources
if let Some(bundle_value) = call.get_flag("bundle")? {
// Use pre-loaded bundle (from cache or previous parse)
load_from_bundle_value(&mut bundle, bundle_value)?;
} else if let Some(files_value) = call.get_flag("files")? {
// Load from FTL files
let files = extract_file_list(files_value)?;
load_from_files(&mut bundle, &files)?;
} else {
return Err(LabeledError::new("Missing argument").with_label("Must provide either --bundle or --files", call.head));
}
// Prepare arguments for interpolation
let fluent_args = if let Some(args_value) = call.get_flag("args")? {
Some(convert_to_fluent_args(args_value)?)
} else {
None
};
// Get the message
let msg = match bundle.get_message(&message_id) {
Some(msg) => msg,
None => {
if call.has_flag("fallback").unwrap_or(false) {
// Return message ID as fallback
return Ok(Value::string(format!("[[{}]]", message_id), call.head));
} else {
return Err(LabeledError::new("Message not found").with_label(format!("Message '{}' not found in locale '{}'", message_id, locale_code), call.head));
}
}
};
// Format the message
let pattern = msg.value()
.ok_or_else(|| LabeledError::new("Message has no value").with_label(format!("Message '{}' has no value", message_id), call.head))?;
let mut errors = vec![];
let formatted = bundle.format_pattern(
pattern,
fluent_args.as_ref(),
&mut errors
);
// Handle formatting errors
if !errors.is_empty() {
let error_msgs: Vec<String> = errors.iter()
.map(|e| format!("{:?}", e))
.collect();
return Err(LabeledError::new("Formatting error").with_label(format!(
"Formatting errors for message '{}': {}",
message_id,
error_msgs.join(", ")
), call.head));
}
Ok(Value::string(formatted.to_string(), call.head))
}
}
fn load_from_bundle_value(
bundle: &mut FluentBundle<FluentResource>,
bundle_value: Value,
) -> Result<(), LabeledError> {
match bundle_value {
Value::Record { val, .. } => {
// Extract messages from parsed bundle record
if let Some(messages_value) = val.get("messages") {
load_messages_from_value(bundle, messages_value)?;
}
}
_ => return Err(LabeledError::new("Invalid bundle").with_label("Bundle must be a record", nu_protocol::Span::unknown())),
}
Ok(())
}
fn load_messages_from_value(
bundle: &mut FluentBundle<FluentResource>,
messages_value: &Value,
) -> Result<(), LabeledError> {
match messages_value {
Value::List { vals, .. } => {
for message_val in vals {
if let Value::Record { val, .. } = message_val {
if let (Some(id_val), Some(text_val)) = (val.get("id"), val.get("text")) {
let id = value_to_string(id_val)?;
let text = value_to_string(text_val)?;
// Create a minimal FTL resource from the message
let ftl_content = format!("{} = {}", id, text);
let resource = FluentResource::try_new(ftl_content)
.map_err(|_| LabeledError::new("Invalid FTL").with_label(format!("Invalid FTL for message '{}'", id), nu_protocol::Span::unknown()))?;
bundle.add_resource(resource)
.map_err(|_| LabeledError::new("Failed to add message").with_label(format!("Failed to add message '{}'", id), nu_protocol::Span::unknown()))?;
}
}
}
}
_ => return Err(LabeledError::new("Invalid messages").with_label("Messages must be a list", nu_protocol::Span::unknown())),
}
Ok(())
}
fn load_from_files(
bundle: &mut FluentBundle<FluentResource>,
files: &[String],
) -> Result<(), LabeledError> {
for file_path in files {
let content = std::fs::read_to_string(file_path)
.map_err(|e| LabeledError::new("Read error").with_label(format!("Failed to read '{}': {}", file_path, e), nu_protocol::Span::unknown()))?;
let resource = FluentResource::try_new(content)
.map_err(|e| LabeledError::new("Invalid FTL").with_label(format!("Invalid FTL in '{}': {:?}", file_path, e), nu_protocol::Span::unknown()))?;
bundle.add_resource(resource)
.map_err(|e| LabeledError::new("Load error").with_label(format!("Failed to load '{}': {:?}", file_path, e), nu_protocol::Span::unknown()))?;
}
Ok(())
}
fn extract_file_list(files_value: Value) -> Result<Vec<String>, LabeledError> {
match files_value {
Value::List { vals, .. } => {
vals.iter()
.map(|v| value_to_string(v))
.collect::<Result<Vec<_>, _>>()
}
_ => Err(LabeledError::new("Invalid files").with_label("Files must be a list of strings", nu_protocol::Span::unknown())),
}
}
fn convert_to_fluent_args(args_value: Value) -> Result<FluentArgs<'static>, LabeledError> {
let mut fluent_args = FluentArgs::new();
match args_value {
Value::Record { val, .. } => {
for (key, value) in val.iter() {
let fluent_value = match value {
Value::String { val, .. } => FluentValue::from(val.clone()),
Value::Int { val, .. } => FluentValue::from(*val as f64),
Value::Float { val, .. } => FluentValue::from(*val),
_ => return Err(LabeledError::new("Unsupported argument type").with_label(format!(
"Unsupported argument type for '{}': {:?}",
key,
value.get_type()
), nu_protocol::Span::unknown())),
};
fluent_args.set(key.clone(), fluent_value);
}
}
_ => return Err(LabeledError::new("Invalid arguments").with_label("Arguments must be a record", nu_protocol::Span::unknown())),
}
Ok(fluent_args)
}
fn value_to_string(value: &Value) -> Result<String, LabeledError> {
match value {
Value::String { val, .. } => Ok(val.clone()),
Value::Int { val, .. } => Ok(val.to_string()),
Value::Float { val, .. } => Ok(val.to_string()),
Value::Bool { val, .. } => Ok(val.to_string()),
_ => Err(LabeledError::new("Type conversion error").with_label(
format!("Cannot convert {:?} to string", value.get_type()),
nu_protocol::Span::unknown()
)),
}
}

14
nu_plugin_fluent/src/commands/mod.rs Normal file
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@ -0,0 +1,14 @@
mod parse_ftl;
mod localize;
mod validate_ftl;
mod extract_messages;
mod list_locales;
mod create_bundle;
pub use parse_ftl::ParseFtl;
pub use localize::Localize;
pub use validate_ftl::ValidateFtl;
pub use extract_messages::ExtractMessages;
pub use list_locales::ListLocales;
pub use create_bundle::CreateBundle;

143
nu_plugin_fluent/src/commands/parse_ftl.rs Normal file
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@ -0,0 +1,143 @@
use nu_plugin::{EngineInterface, EvaluatedCall, PluginCommand, SimplePluginCommand};
use nu_protocol::{
Category, LabeledError, Signature, Span, SyntaxShape, Type, Value, record
};
use fluent_syntax::parser::parse;
use fluent_syntax::ast::{Entry, Message, Pattern, PatternElement};
use std::fs;
use crate::FluentPlugin;
pub struct ParseFtl;
impl SimplePluginCommand for ParseFtl {
type Plugin = FluentPlugin;
fn name(&self) -> &str {
"fluent-parse"
}
fn signature(&self) -> Signature {
Signature::build(PluginCommand::name(self))
.input_output_type(Type::Any, Type::Record(vec![].into()))
.required("file", SyntaxShape::Filepath, "FTL file to parse")
.category(Category::Strings)
}
fn description(&self) -> &str {
"Parse a Fluent Translation List (.ftl) file and return message structure"
}
fn examples(&self) -> Vec<nu_protocol::Example<'_>> {
vec![
nu_protocol::Example {
description: "Parse an FTL file",
example: "fluent-parse locales/en-US/main.ftl",
result: None,
},
]
}
fn run(
&self,
_plugin: &Self::Plugin,
_engine: &EngineInterface,
call: &EvaluatedCall,
_input: &Value,
) -> Result<Value, LabeledError> {
let file_path: String = call.req(0)?;
// Read FTL file
let ftl_content = fs::read_to_string(&file_path)
.map_err(|e| LabeledError::new("Read error").with_label(format!("Failed to read file '{}': {}", file_path, e), call.head))?;
// Parse FTL content
let resource = match parse(ftl_content) {
Ok(res) => res,
Err((_, errors)) => {
return Err(LabeledError::new("Parse error").with_label(format!("Failed to parse FTL content: {:?}", errors), call.head));
}
};
// Convert AST to Nushell values
let messages = extract_messages_from_resource(&resource, call.head)
.map_err(|e| LabeledError::new("Extract error").with_label(e, call.head))?;
let message_count = messages.len() as i64;
let result = Value::record(
record! {
"file" => Value::string(file_path, call.head),
"messages" => Value::list(messages, call.head),
"message_count" => Value::int(message_count, call.head),
},
call.head,
);
Ok(result)
}
}
fn extract_messages_from_resource(resource: &fluent_syntax::ast::Resource<String>, span: Span) -> Result<Vec<Value>, String> {
let mut messages = Vec::new();
for entry in &resource.body {
if let Entry::Message(message) = entry {
let message_value = extract_message_info(message, span)?;
messages.push(message_value);
}
}
Ok(messages)
}
fn extract_message_info(message: &Message<String>, span: Span) -> Result<Value, String> {
let id = message.id.name.to_string();
// Extract the default text from the pattern
let text = if let Some(ref pattern) = message.value {
extract_pattern_text(pattern)
} else {
String::new()
};
// Extract attributes
let mut attributes = Vec::new();
for attribute in &message.attributes {
let attr_value = Value::record(
record! {
"name" => Value::string(attribute.id.name.to_string(), span),
"value" => Value::string(extract_pattern_text(&attribute.value), span),
},
span,
);
attributes.push(attr_value);
}
// Extract comment if present
let comment = message.comment.as_ref()
.map(|c| c.content.iter().map(|line| line.trim()).collect::<Vec<_>>().join("\n"))
.unwrap_or_default();
Ok(Value::record(
record! {
"id" => Value::string(id, span),
"text" => Value::string(text, span),
"attributes" => Value::list(attributes, span),
"comment" => Value::string(comment, span),
},
span,
))
}
fn extract_pattern_text(pattern: &Pattern<String>) -> String {
pattern.elements
.iter()
.map(|element| match element {
PatternElement::TextElement { value } => value.to_string(),
PatternElement::Placeable { ref expression } => {
// For now, just return placeholder representation
format!("{{{}}}", format!("{:?}", expression).replace("\"", ""))
}
})
.collect::<Vec<_>>()
.join("")
}

76
nu_plugin_fluent/src/commands/validate_ftl.rs Normal file
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@ -0,0 +1,76 @@
use nu_plugin::{EngineInterface, EvaluatedCall, PluginCommand, SimplePluginCommand};
use nu_protocol::{Category, LabeledError, Signature, SyntaxShape, Type, Value, record};
use fluent_syntax::parser::parse;
use crate::FluentPlugin;
pub struct ValidateFtl;
impl SimplePluginCommand for ValidateFtl {
type Plugin = FluentPlugin;
fn name(&self) -> &str {
"fluent-validate"
}
fn signature(&self) -> Signature {
Signature::build(PluginCommand::name(self))
.input_output_type(Type::Any, Type::Record(vec![].into()))
.required("file", SyntaxShape::Filepath, "FTL file to validate")
.category(Category::Strings)
}
fn description(&self) -> &str {
"Validate a Fluent Translation List (.ftl) file syntax"
}
fn examples(&self) -> Vec<nu_protocol::Example<'_>> {
vec![
nu_protocol::Example {
description: "Validate an FTL file",
example: "fluent-validate locales/en-US/main.ftl",
result: None,
},
]
}
fn run(
&self,
_plugin: &Self::Plugin,
_engine: &EngineInterface,
call: &EvaluatedCall,
_input: &Value,
) -> Result<Value, LabeledError> {
let file_path: String = call.req(0)?;
let content = std::fs::read_to_string(&file_path)
.map_err(|e| LabeledError::new("Read error").with_label(format!("Failed to read '{}': {}", file_path, e), call.head))?;
let parse_result = parse(content);
let result = match parse_result {
Ok(_resource) => Value::record(
record! {
"valid" => Value::bool(true, call.head),
"file" => Value::string(file_path, call.head),
"errors" => Value::list(vec![], call.head),
},
call.head,
),
Err((_resource, errors)) => {
let error_list: Vec<Value> = errors.iter()
.map(|err| Value::string(format!("{:?}", err), call.head))
.collect();
Value::record(
record! {
"valid" => Value::bool(false, call.head),
"file" => Value::string(file_path, call.head),
"errors" => Value::list(error_list, call.head),
},
call.head,
)
}
};
Ok(result)
}
}

25
nu_plugin_fluent/src/fluent_plugin.rs Normal file
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@ -0,0 +1,25 @@
use nu_plugin::{Plugin, PluginCommand};
use crate::commands::{
CreateBundle, ExtractMessages, ListLocales, Localize, ParseFtl, ValidateFtl,
};
pub struct FluentPlugin;
impl Plugin for FluentPlugin {
fn version(&self) -> String {
env!("CARGO_PKG_VERSION").into()
}
fn commands(&self) -> Vec<Box<dyn PluginCommand<Plugin = Self>>> {
vec![
Box::new(ParseFtl),
Box::new(Localize),
Box::new(ValidateFtl),
Box::new(ExtractMessages),
Box::new(ListLocales),
Box::new(CreateBundle),
]
}
}

9
nu_plugin_fluent/src/main.rs Normal file
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@ -0,0 +1,9 @@
use nu_plugin::{serve_plugin, MsgPackSerializer};
mod commands;
mod fluent_plugin;
use fluent_plugin::FluentPlugin;
fn main() {
serve_plugin(&FluentPlugin, MsgPackSerializer {});
}