109 lines
4.9 KiB
Markdown
109 lines
4.9 KiB
Markdown
If this tool saves you time, please consider making a donation towards the continued maintainence and development: https://donate.biesbjerg.com
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[](https://donate.biesbjerg.com)
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# ngx-translate-extract
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Extract translatable (ngx-translate) strings and save as a JSON or Gettext pot file.
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Merges with existing strings if the output file already exists.
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## Install
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Install the package in your project:
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`npm install @biesbjerg/ngx-translate-extract --save-dev`
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Add a script to your project's `package.json`:
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```json
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...
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"scripts": {
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"i18n:init": "ngx-translate-extract --input ./src --output ./src/assets/i18n/template.json --key-as-default-value --replace --format json",
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"i18n:extract": "ngx-translate-extract --input ./src --output ./src/assets/i18n/{en,da,de,fi,nb,nl,sv}.json --clean --format json"
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}
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...
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```
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You can now run `npm run extract-i18n` and it will extract strings from your project.
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## Usage
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**Extract from dir and save to file**
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`ngx-translate-extract --input ./src --output ./src/assets/i18n/strings.json`
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**Extract from multiple dirs**
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`ngx-translate-extract --input ./src-a ./src-b --output ./src/assets/i18n/strings.json`
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**Extract and save to multiple files using path expansion**
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`ngx-translate-extract --input ./src --output ./src/i18n/{da,en}.json`
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### JSON indentation
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Tabs are used by default for indentation when saving extracted strings in json formats:
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If you want to use spaces instead, you can do the following:
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`ngx-translate-extract --input ./src --output ./src/i18n/en.json --format-indentation ' '`
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### Marker function
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If you want to extract strings that are not passed directly to `TranslateService`'s `get()`/`instant()`/`stream()` methods, you can wrap them in a marker function to let `ngx-translate-extract` know you want to extract them.
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Install marker function:
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`npm install @biesbjerg/ngx-translate-extract-marker`
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```ts
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import { marker } from '@biesbjerg/ngx-translate-extract-marker';
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marker('Extract me');
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```
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You can alias the marker function if needed:
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```ts
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import { marker as _ } from '@biesbjerg/ngx-translate-extract-marker';
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_('Extract me');
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```
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_Note: `ngx-translate-extract` will automatically detect the import name_
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### Commandline arguments
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```
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Usage:
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ngx-translate-extract [options]
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Output
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--format, -f Format [string] [choices: "json", "namespaced-json", "pot"] [default: "json"]
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--format-indentation, --fi Format indentation (JSON/Namedspaced JSON) [string] [default: " "]
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--sort, -s Sort strings in alphabetical order [boolean]
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--clean, -c Remove obsolete strings after merge [boolean]
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--replace, -r Replace the contents of output file if it exists (Merges by default) [boolean]
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Extracted key value (defaults to empty string)
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--key-as-default-value, -k Use key as default value [boolean]
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--null-as-default-value, -n Use null as default value [boolean]
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--string-as-default-value, -d Use string as default value [string]
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Options:
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--version, -v Show version number [boolean]
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--help, -h Show help [boolean]
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--input, -i Paths you would like to extract strings from. You can use path expansion, glob patterns and
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multiple paths [array] [required] [default: ["/Users/kim/apps/ngx-translate-extract"]]
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--output, -o Paths where you would like to save extracted strings. You can use path expansion, glob
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patterns and multiple paths [array] [required]
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Examples:
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ngx-translate-extract -i ./src-a/ -i ./src-b/ -o strings.json Extract (ts, html) from multiple paths
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ngx-translate-extract -i './{src-a,src-b}/' -o strings.json Extract (ts, html) from multiple paths using brace
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expansion
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ngx-translate-extract -i ./src/ -o ./i18n/da.json -o ./i18n/en.json Extract (ts, html) and save to da.json and en.json
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ngx-translate-extract -i ./src/ -o './i18n/{en,da}.json' Extract (ts, html) and save to da.json and en.json
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using brace expansion
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ngx-translate-extract -i './src/**/*.{ts,tsx,html}' -o strings.json Extract from ts, tsx and html
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ngx-translate-extract -i './src/**/!(*.spec).{ts,html}' -o Extract from ts, html, excluding files with ".spec"
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strings.json
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```
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## Note for GetText users
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Please pay attention of which version of `gettext-parser` you actually use in your project. For instance, `gettext-parser:1.2.2` does not support HTML tags in translation keys.
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