mirror of
https://github.com/akuker/RASCSI.git
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133 lines
4.4 KiB
Markdown
133 lines
4.4 KiB
Markdown
# PiSCSI Web
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## Setup local dev env
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```bash
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# Change to python/web/src
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$ cd python/web
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# Make a virtual env named venv
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$ python3 -m venv venv
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# Use that virtual env in this shell
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$ source venv/bin/activate
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# Install requirements
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$ pip install -r requirements.txt
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# Use mocks and a temp dir - start the web server
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$ BASE_DIR=/tmp/images/ PATH=$PATH:`pwd`/mock/bin/ cd python/web && PYTHON_COMMON_PATH=$(dirname $PWD)/common/src PYTHONPATH=$PWD/src:${PYTHON_COMMON_PATH} python3 src/web.py
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```
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### Mocks for local development
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You may edit the files under `mock/bin` to simulate Linux command responses.
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TODO: piscsi-web uses protobuf commands to send and receive data from piscsi.
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A separate mocking solution will be needed for this interface.
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## (Optional) Pushing to the Pi via git
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This is a setup for pushing code changes from your local development environment to the Raspberry Pi without a roundtrip to the remote GitHub repository.
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Setup a bare repo on the piscsi
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```
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$ ssh pi@piscsi
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$ mkdir /home/pi/dev.git && cd /home/pi/dev.git
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$ git --bare init
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Initialized empty Git repository in /home/pi/dev.git
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```
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Locally
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```
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$ cd ~/source/PISCSI
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$ git remote add pi ssh://pi@piscsi/home/pi/dev.git
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$ git push pi master
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```
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## Localizing the Web Interface
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We use the Flask-Babel library and Flask/Jinja2 extension for internationalization (i18n).
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It uses the 'pybabel' command line tool for extracting and compiling localizations. The Web Interface start script will automatically compile localizations upon launch.
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Activate the Python venv in src/web/ to use it:
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```
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$ cd python/web
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$ source venv/bin/activate
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$ pybabel --help
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```
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To create a new localization, it needs to be added to the LANGAUGES constant in
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web/settings.py. To localize messages coming from the PiSCSI backend, update also code in
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raspberrypi/localizer.cpp in the PiSCSI C++ code.
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Once this is done, it is time to localize the Python code. The below steps are derived from the [Flask-Babel documentation](https://python-babel.github.io/flask-babel/index.html#translating-applications).
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First, generate the raw messages.pot file containing extracted strings.
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```
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$ pybabel extract -F babel.cfg -o messages.pot src
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```
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### Initialize a new localization
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When adding a localization for a new language, initialize the directory structure. Replace 'xx' with the two character code for the language.
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```
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$ pybabel init -i messages.pot -d src/translations -l xx
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```
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### Update an existing localization
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Tip: Use the script **translation_update.sh** in this dir to automatically extract strings, update existing localizations, and print translation statistics.
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After strings have been added or changed in the code, update the existing localizations.
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```
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$ pybabel update -i messages.pot -d src/translations
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```
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Then edit the updated messages.po file for your language. Make sure to update fuzzy strings and translate new ones.
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When you are ready to contribute new or updated localizations, use the same Gitflow Workflow as used for any code contributions to submit PRs against the develop branch.
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### Working with PO files
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See the [GNU gettext documentation](https://www.gnu.org/software/gettext/manual/html_node/PO-Files.html) for an introduction to the PO file format.
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We make heavy use of __python-format__ for formatting, for instance:
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```
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#: file_cmds.py:353
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#, python-format
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msgid "%(file_name)s downloaded to %(save_dir)s"
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msgstr "Laddade ner %(file_name)s till %(save_dir)s"
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```
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There are also a few instances of formatting in JavaScript:
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```
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#: templates/index.html:381
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msgid "Server responded with code: {{statusCode}}"
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msgstr "Servern svarade med kod: {{statusCode}}"
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```
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And with html tags:
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```
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#: templates/index.html:304
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#, python-format
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msgid ""
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"Emulates a SCSI DaynaPORT Ethernet Adapter. <a href=\"%(url)s\">Host "
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"drivers and configuration required</a>."
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msgstr ""
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"Emulerar en SCSI DaynaPORT ethernet-adapter. <a href=\"%(url)s\">Kräver "
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"drivrutiner och inställningar</a>."
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```
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### Contributing to the project
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New or updated localizations are treated just like any other code change. See the [project README](https://github.com/PiSCSI/piscsi/tree/master#how-do-i-contribute) for further information.
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### (Optional) See translation stats for a localization
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Install the gettext package and use msgfmt to see the translation progress.
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```
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$ sudo apt install gettext
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$ cd python/web/src
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$ msgfmt --statistics translations/sv/LC_MESSAGES/messages.po
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215 translated messages, 1 untranslated message.
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```
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