docs: rename `ng xi18n` to `ng extract-i18n` (#39337)
In Angular CLI version 11, xi18n has been changed from `ng xi18n` to `ng extract-i18n`. PR Close #39337
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Alan Agius
Joey Perrott
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@ -327,7 +327,7 @@ You can also nest different clauses together, such as the `plural` and `select`
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## Work with translation files
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After preparing a template for translation, use the Angular CLI `xi18n` command to extract the marked text in the template into a _source language_ file.
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After preparing a template for translation, use the Angular CLI `extract-i18n` command to extract the marked text in the template into a _source language_ file.
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The marked text includes text marked with `i18n` and attributes marked with `i18n-`*attribute* as described in the previous section.
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Follow these steps:
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@ -344,12 +344,12 @@ You can optionally change the location, format, and name.
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To extract the source language file, open a terminal window, change to the root directory of your app project, and run the following CLI command:
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<code-example language="sh" class="code-shell">
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ng xi18n
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ng extract-i18n
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</code-example>
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The `xi18n` command creates a source language file named `messages.xlf` in your project's root directory using the [XML Localization Interchange File Format (XLIFF, version 1.2)](https://en.wikipedia.org/wiki/XLIFF "Wikipedia page about XLIFF").
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The `extract-i18n` command creates a source language file named `messages.xlf` in your project's root directory using the [XML Localization Interchange File Format (XLIFF, version 1.2)](https://en.wikipedia.org/wiki/XLIFF "Wikipedia page about XLIFF").
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Use the following `xi18n` command options to change the source language file location, format, and file name:
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Use the following `extract-i18n` command options to change the source language file location, format, and file name:
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* `--output-path`: Change the location.
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* `--format`: Change the format.
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@ -358,25 +358,19 @@ Use the following `xi18n` command options to change the source language file loc
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Note: The `--i18n-locale` option is deprecated.
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Angular 9 uses the source locale configured in your app's [workspace configuration](guide/workspace-config "Angular workspace configuration") file (`angular.json`).
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<div class="alert is-helpful">
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The ng xi18n extraction mechanism uses the ViewEngine compiler, which is not able to cope with some code syntax that the Ivy compiler can handle. A fix for this issue is currently under development. To follow or contribute to this fix see [PR 32912](https://github.com/angular/angular/pull/32912).
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</div>
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#### Change the source language file location
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To create a file in the `src/locale` directory, specify the output path as an option, as shown in the following example:
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<code-example language="sh" class="code-shell">
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ng xi18n --output-path src/locale
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ng extract-i18n --output-path src/locale
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</code-example>
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{@a other-formats}
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#### Change the source language file format
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The `xi18n` command can read and write files in three translation formats:
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The `extract-i18n` command can read and write files in three translation formats:
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* XLIFF 1.2 (default)
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* XLIFF 2
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@ -385,9 +379,9 @@ The `xi18n` command can read and write files in three translation formats:
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Specify the translation format explicitly with the `--format` command option, as shown in the following examples:
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<code-example language="sh" class="code-shell">
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ng xi18n --format=xlf
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ng xi18n --format=xlf2
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ng xi18n --format=xmb
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ng extract-i18n --format=xlf
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ng extract-i18n --format=xlf2
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ng extract-i18n --format=xmb
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</code-example>
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<div class="alert is-helpful">
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@ -403,14 +397,14 @@ To change the name of the source language file generated by the extraction tool,
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the `--outFile` command option:
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<code-example language="sh" class="code-shell">
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ng xi18n --out-file source.xlf
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ng extract-i18n --out-file source.xlf
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</code-example>
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{@a localization-folder}
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### Create a translation file for each language
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The `ng xi18n` command (with no options) generates a source language file named `messages.xlf` in the project `src` folder.
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The `ng extract-i18n` command (with no options) generates a source language file named `messages.xlf` in the project `src` folder.
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Create *translation* files for each language by copying the source language file.
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To avoid confusion with multiple translations, you should organize the language translation files by locale in a dedicated `locale` folder under `src/`.
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Use a filename extension that matches the associated locale, such as `messages.fr.xlf`.
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@ -149,7 +149,7 @@ See [Build target](#build-target) below for more information.
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* The `architect/lint` section configures defaults for options of the `ng lint` command, which performs code analysis on project source files. The default linting tool for Angular is [TSLint](https://palantir.github.io/tslint/).
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* The `architect/extract-i18n` section configures defaults for options of the `ng-xi18n` tool used by the `ng xi18n` command, which extracts marked message strings from source code and outputs translation files.
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* The `architect/extract-i18n` section configures defaults for options of the `ng extract-i18n` command, which extracts marked message strings from source code and outputs translation files.
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* The `architect/server` section configures defaults for creating a Universal app with server-side rendering, using the `ng run <project>:server` command.
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@ -12,7 +12,7 @@
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"test": "ng test",
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"lint": "ng lint",
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"e2e": "ng e2e",
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"extract": "ng xi18n --output-path=locale"
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"extract": "ng extract-i18n --output-path=locale"
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},
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"private": true,
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"dependencies": {
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@ -20,7 +20,7 @@ These translated apps are stored in `tmp/translations/(de|fr)`.
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### legacy
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The legacy `ng xi18n` tool extracts the messages from the Angular templates, into the XLIFF 1.2
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The CLI `ng extract-i18n` tool extracts the messages from the Angular templates, into the XLIFF 1.2
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format with legacy message ids (`tmp/legacy-locales/messages.legacy.xlf`).
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The translation file is modified to apply a simple translation.
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@ -41,7 +41,7 @@ const extract = (from: string, regex: any, transformFn: (match: any[], state: Se
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};
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// verify that we extracted all the necessary translations
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// and their ids match the ones extracted via 'ng xi18n'
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// and their ids match the ones extracted via 'ng extract-i18n'
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const verifyTranslationIds =
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(source: string, output: string, exceptions = {},
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interpolationConfig: InterpolationConfig = DEFAULT_INTERPOLATION_CONFIG) => {
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@ -2982,7 +2982,8 @@ describe('i18n support in the template compiler', () => {
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`;
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const exceptions = {
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'3052001905251380936': 'Wrapper message generated by "ng xi18n" around ICU: " {$ICU} "'
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'3052001905251380936':
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'Wrapper message generated by "ng extract-i18n" around ICU: " {$ICU} "'
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};
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verify(input, output, {exceptions});
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});
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@ -2064,7 +2064,7 @@ export function parseTemplate(
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// process i18n meta information (scan attributes, generate ids)
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// before we run whitespace removal process, because existing i18n
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// extraction process (ng xi18n) relies on a raw content to generate
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// extraction process (ng extract-i18n) relies on a raw content to generate
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// message ids
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const i18nMetaVisitor = new I18nMetaVisitor(
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interpolationConfig, /* keepI18nAttrs */ !preserveWhitespaces,
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@ -2077,7 +2077,7 @@ export function parseTemplate(
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// run i18n meta visitor again in case whitespaces are removed (because that might affect
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// generated i18n message content) and first pass indicated that i18n content is present in a
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// template. During this pass i18n IDs generated at the first pass will be preserved, so we can
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// mimic existing extraction process (ng xi18n)
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// mimic existing extraction process (ng extract-i18n)
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if (i18nMetaVisitor.hasI18nMeta) {
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rootNodes = html.visitAll(
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new I18nMetaVisitor(interpolationConfig, /* keepI18nAttrs */ false), rootNodes);
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@ -1260,7 +1260,7 @@ Resulting in same string which Angular can process:
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### Placeholders with multiple values
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While extracting messages via `ng xi18n`, the tool performs an optimization and reuses the same placeholders for elements/interpolations in case placeholder content is identical.
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While extracting messages via `ng extract-i18n`, the tool performs an optimization and reuses the same placeholders for elements/interpolations in case placeholder content is identical.
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For example the following template:
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```html
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<b>My text 1</b><b>My text 2</b>
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