adds Make target "supported-languages" to list languages 100% transla…

…ted in Weblate

Includes some jq magic adapted from <https://stackoverflow.com/a/42428341>.

Makefile

@@ -151,7 +151,10 @@ version:
 
 LOCALE_DIR=securedrop_client/locale
 POT=${LOCALE_DIR}/messages.pot
+SUPPORTED_LOCALES_LIST=l10n.txt
 VERSION=$(shell python -c "import securedrop_client; print(securedrop_client.__version__)")
+WEBLATE_API=https://weblate.securedrop.org/api/
+WEBLATE_COMPONENT=securedrop  # FIXME: securedrop-client (once unmarked "restricted" in Weblate)
 
 # Update POTs from translated strings in source code and merge into
 # per-locale POs.
@@ -204,3 +207,14 @@ ${LOCALE_DIR}/%/LC_MESSAGES/messages.mo: ${LOCALE_DIR}/%/LC_MESSAGES/messages.po
 	@pybabel compile \
 		--directory ${LOCALE_DIR} \
 		--statistics
+
+# List languages 100% translated in Weblate.
+.PHONY: supported-languages
+supported-languages:
+	@wlc \
+		--format json \
+		--url ${WEBLATE_API} \
+		list-translations \
+		| jq -r 'map(select(.component.slug == "${WEBLATE_COMPONENT}", .translated_percent == 100)) | map("* \(.language.name|tostring) (``\(.language.code|tostring)``)") | join("\n")' \
+		> ${SUPPORTED_LOCALES_LIST}
+	@git add ${SUPPORTED_LOCALES_LIST}

requirements/dev-requirements.in

@@ -35,3 +35,4 @@ semgrep==0.42.0
 sip==4.19.8
 typed-ast==1.4.1
 vcrpy==4.0.2
+wlc==1.12

requirements/dev-requirements.txt

@@ -11,6 +11,10 @@ appdirs==1.4.4 \
     --hash=sha256:7d5d0167b2b1ba821647616af46a749d1c653740dd0d2415100fe26e27afdf41 \
     --hash=sha256:a841dacd6b99318a741b166adb07e19ee71a274450e68237b4650ca1055ab128
     # via black
+argcomplete==1.12.3 \
+    --hash=sha256:291f0beca7fd49ce285d2f10e4c1c77e9460cf823eef2de54df0c0fec88b0d81 \
+    --hash=sha256:2c7dbffd8c045ea534921e63b0be6fe65e88599990d8dc408ac8c542b72a5445
+    # via wlc
 arrow==0.12.1 \
     --hash=sha256:a558d3b7b6ce7ffc74206a86c147052de23d3d4ef0e17c210dd478c53575c4cd
     # via -r requirements/requirements.in
@@ -120,6 +124,7 @@ importlib-metadata==4.6.3 \
     --hash=sha256:0645585859e9a6689c523927a5032f2ba5919f1f7d0e84bd4533312320de1ff9 \
     --hash=sha256:51c6635429c77cf1ae634c997ff9e53ca3438b495f10a55ba28594dd69764a8b
     # via
+    #   argcomplete
     #   jsonschema
     #   pluggy
     #   pytest
@@ -458,6 +463,7 @@ python-dateutil==2.7.5 \
     #   -r requirements/requirements.in
     #   alembic
     #   arrow
+    #   wlc
 python-editor==1.0.3 \
     --hash=sha256:a3c066acee22a1c94f63938341d4fb374e3fdd69366ed6603d7b24bed1efc565
     # via
@@ -475,6 +481,10 @@ pytz==2021.1 \
     --hash=sha256:83a4a90894bf38e243cf052c8b58f381bfe9a7a483f6a9cab140bc7f702ac4da \
     --hash=sha256:eb10ce3e7736052ed3623d49975ce333bcd712c7bb19a58b9e2089d4057d0798
     # via babel
+pyxdg==0.27 \
+    --hash=sha256:2d6701ab7c74bbab8caa6a95e0a0a129b1643cf6c298bf7c569adec06d0709a0 \
+    --hash=sha256:80bd93aae5ed82435f20462ea0208fb198d8eec262e831ee06ce9ddb6b91c5a5
+    # via wlc
 pyyaml==5.4.1 \
     --hash=sha256:08682f6b72c722394747bddaf0aa62277e02557c0fd1c42cb853016a38f8dedf \
     --hash=sha256:0f5f5786c0e09baddcd8b4b45f20a7b5d61a7e7e99846e3c799b05c7c53fa696 \
@@ -550,6 +560,7 @@ requests==2.22.0 \
     #   -r requirements/requirements.in
     #   securedrop-sdk
     #   semgrep
+    #   wlc
 ruamel.yaml.clib==0.2.6 \
     --hash=sha256:0847201b767447fc33b9c235780d3aa90357d20dd6108b92be544427bea197dd \
     --hash=sha256:1866cf2c284a03b9524a5cc00daca56d80057c5ce3cdc86a52020f4c720856f0 \
@@ -684,6 +695,10 @@ wcwidth==0.2.5 \
     --hash=sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784 \
     --hash=sha256:c4d647b99872929fdb7bdcaa4fbe7f01413ed3d98077df798530e5b04f116c83
     # via pytest
+wlc==1.12 \
+    --hash=sha256:3912b4c3c6b71fe920ec633dff68cd40a95678241aaffb32b277f76670c78105 \
+    --hash=sha256:e0a046aec8c1bb199bec20bd73e5b9ea1668d19e72fb6d0349bf7b80032af958
+    # via -r requirements/dev-requirements.in
 wrapt==1.12.1 \
     --hash=sha256:b62ffa81fb85f4332a4f609cab4ac40709470da05643a082ec1eb88e6d9b97d7
     # via vcrpy