Add internationalisation support for docs (#2224)

.github/workflows/build_assets.yml

@@ -21,7 +21,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Packages (pip)
-        run: pip install -r docs/source/requirements.txt
+        run: pip install -r docs/requirements.txt
 
       - name: Build Assets
         run: |

.gitignore

@@ -22,8 +22,9 @@ i18n/*.qph
 
 # Documentation
 /docs/build/
+/docs/source/locales/**/*.mo
 /novelwriter/assets/help/
-/novelwriter/assets/manual.pdf
+/novelwriter/assets/manual*.pdf
 *.qch
 *.qhc
 .~lock.*

docs/requirements.txt

@@ -1,6 +1,7 @@
-sphinx-book-theme
-sphinx>=5.0
-sphinx-favicon
-sphinx-design
-pygments>=2.7
 docutils>=0.17.1
+pygments>=2.7
+sphinx-book-theme
+sphinx-design
+sphinx-favicon
+sphinx-intl
+sphinx>=5.0

docs/source/conf.py

@@ -5,15 +5,20 @@ Documentation: http://www.sphinx-doc.org/en/master/config
 
 # -- Imports -----------------------------------------------------------------
 
+import datetime
 import os
 import time
-import datetime
 
 # -- Project Information -----------------------------------------------------
 
 project = "novelWriter"
 copyright = f"{datetime.date.today().year}"
-author = "Veronica Berglyd Olsen"
+
+tmp_authors = ["Veronica Berglyd Olsen"]
+if additional := os.environ.get("SPHINX_I18N_AUTHORS"):
+    tmp_authors.extend(a.strip() for a in additional.split(","))
+
+author = ", ".join(tmp_authors)
 
 initFile = os.path.join(
     os.path.dirname(__file__), os.pardir, os.pardir,
@@ -41,6 +46,8 @@ source_suffix = ".rst"
 master_doc = "index"
 today_fmt = "%A, %d %B %Y at %H:%M"
 language = "en"
+locale_dirs = ["locales/"]
+gettext_compact = False
 exclude_patterns = []
 
 # -- Options for HTML Output -------------------------------------------------
@@ -80,5 +87,5 @@ latex_elements = {
 }
 latex_logo = "_static/novelwriter-pdf.png"
 latex_documents = [(
-    master_doc, "manual.tex", "User Guide", author, "manual"
+    master_doc, "manual.tex", None, author, "manual"
 )]

docs/source/index.rst

@@ -1,6 +1,6 @@
-######################
+##########
-novelWriter User Guide
+User Guide
-######################
+##########
 
 | **Release Version:** |release|
 | **Updated:** |today|

docs/source/locales/authors_fr.conf

@@ -0,0 +1,2 @@
+# French translation authors, one name per line
+Karduin

docs/source/tech_source.rst

@@ -138,7 +138,7 @@ packages from PyPi:
 
 .. code-block:: bash
 
-   pip install -r docs/source/requirements.txt
+   pip install -r docs/requirements.txt
 
 The documentation can then be built from the root folder in the source code by running:
 

pkgutils.py

@@ -202,6 +202,24 @@ if __name__ == "__main__":
     )
     cmdBuildQM.set_defaults(func=utils.assets.buildTranslationAssets)
 
+    # Update Docs i18n Sources
+    cmdUpdateDocsPo = parsers.add_parser(
+        "docs-lupdate", help=(
+            "Update translation files for internationalisation of the docs. "
+            "The langauges to be updated can be added as arguments, "
+            "or set to all to update all existing translations."
+        )
+    )
+    cmdUpdateDocsPo.add_argument("lang", nargs="+")
+    cmdUpdateDocsPo.set_defaults(func=utils.assets.updateDocsTranslationSources)
+
+    # Build Docs i18n Files
+    cmdBuildU18nDocs = parsers.add_parser(
+        "docs-lrelease", help="Build the translated PDF manual files."
+    )
+    cmdBuildU18nDocs.add_argument("lang", nargs="+")
+    cmdBuildU18nDocs.set_defaults(func=utils.assets.buildDocsTranslationAssets)
+
     # Build Manual
     cmdBuildManual = parsers.add_parser(
         "manual", help="Build the help documentation as a PDF (requires LaTeX)."

setup/make_pip.sh

@@ -17,7 +17,7 @@ if [ ! -d $ENVPATH ]; then
     python3 -m venv $ENVPATH
 fi
 source $ENVPATH/bin/activate
-pip3 install -r docs/source/requirements.txt
+pip3 install -r docs/requirements.txt
 python3 pkgutils.py build-assets
 deactivate
 

setup/make_release.sh

@@ -16,7 +16,7 @@ if [ ! -d $ENVPATH ]; then
     python3 -m venv $ENVPATH
 fi
 source $ENVPATH/bin/activate
-pip3 install -r docs/source/requirements.txt
+pip3 install -r docs/requirements.txt
 python3 pkgutils.py build-assets
 deactivate
 

utils/assets.py

@@ -21,12 +21,15 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
 from __future__ import annotations
 
 import argparse
+import os
 import subprocess
 import sys
 import zipfile
 
 from pathlib import Path
 
+from PyQt6.QtCore import QLocale
+
 from utils.common import ROOT_DIR, writeFile
 
 
@@ -248,6 +251,82 @@ def buildTranslationAssets(args: argparse.Namespace | None = None) -> None:
     return
 
 
+def updateDocsTranslationSources(args: argparse.Namespace) -> None:
+    """Build the documentation .po files."""
+    print("")
+    print("Building Docs Translation Files")
+    print("===============================")
+    print("")
+
+    docsDir = ROOT_DIR / "docs"
+    locsDir = ROOT_DIR / "docs" / "source" / "locales"
+    locsDir.mkdir(exist_ok=True)
+
+    print("Generating POT Files")
+    subprocess.call(["make", "gettext"], cwd=docsDir)
+    print("")
+
+    lang = args.lang
+    update = []
+    if lang == ["all"]:
+        update = [i.stem for i in locsDir.iterdir() if i.is_dir()]
+    else:
+        update = lang
+
+    print("Generating PO Files")
+    print("Languages: ", update)
+    print("")
+
+    for code in update:
+        subprocess.call(["sphinx-intl", "update", "-p", "build/gettext", "-l", code], cwd=docsDir)
+        print("")
+
+    print("Done")
+    print("")
+
+    return
+
+
+def buildDocsTranslationAssets(args: argparse.Namespace | None = None) -> None:
+    """Build the documentation i18n PDF files."""
+    print("")
+    print("Building Docs Manuals")
+    print("=====================")
+    print("")
+
+    docsDir = ROOT_DIR / "docs"
+    locsDir = ROOT_DIR / "docs" / "source" / "locales"
+    pdfFile = ROOT_DIR / "docs" / "build" / "latex" / "manual.pdf"
+    locsDir.mkdir(exist_ok=True)
+
+    lang = args.lang
+    build = []
+    if lang == ["all"]:
+        build = [i.stem for i in locsDir.iterdir() if i.is_dir()]
+    else:
+        build = lang
+
+    for code in build:
+        data = (locsDir / f"authors_{code}.conf").read_text(encoding="utf-8")
+        authors = [x for x in data.splitlines() if x and not x.startswith("#")]
+        env = os.environ.copy()
+        env["SPHINX_I18N_AUTHORS"] = ", ".join(authors)
+        exCode = subprocess.call(
+            f"make -e SPHINXOPTS=\"-D language='{code}'\" clean latexpdf",
+            cwd=docsDir, env=env, shell=True
+        )
+        if exCode == 0:
+            print("")
+            name = f"manual_{QLocale(code).name()}.pdf"
+            pdfFile.rename(ROOT_DIR / "novelwriter" / "assets" / name)
+        else:
+            raise Exception(f"Build returned error code {exCode}")
+
+    print("")
+
+    return
+
+
 def cleanBuiltAssets(args: argparse.Namespace | None = None) -> None:
     """Remove assets built by this script."""
     print("")