Añade nuevo script que indica entradas faltantes

El script está diseñado para ser usado ya sea como un hook de
pre-commit, o (principalmente) dentro de una nuevo paso del GitHub
action que revisa PRs, de tal modo que se añada y actualice
automáticamente un comentario en el PR indicando si todas las entradas
del archivo siendo traducido han sido completadas o no.

Signed-off-by: Rodrigo Tobar <rtobar@icrar.org>

Author: rtobar

scripts/list_missing_entries.py

@@ -0,0 +1,55 @@
+import argparse
+import dataclasses
+import enum
+import glob
+import itertools
+import os
+
+import polib
+import tabulate
+
+
+class MissingReason(enum.StrEnum):
+    FUZZY = "fuzzy"
+    UNTRANSLATED = "untranslated"
+
+    @staticmethod
+    def from_poentry(poentry: polib.POEntry):
+        if poentry.fuzzy:
+            return MissingReason.FUZZY
+        assert not poentry.translated()
+        return MissingReason.UNTRANSLATED
+
+@dataclasses.dataclass
+class MissingEntry:
+    reason: MissingReason
+    file: str
+    line: int
+
+    @staticmethod
+    def from_poentry(pofilename: str, poentry: polib.POEntry) -> "MissingEntry":
+        return MissingEntry(MissingReason.from_poentry(poentry), pofilename, poentry.linenum)
+
+
+def find_missing_entries(filename: str) -> list[MissingEntry]:
+    po = polib.pofile(filename)
+    fuzzy = po.fuzzy_entries()
+    untranslated = po.untranslated_entries()
+    return [MissingEntry.from_poentry(filename, entry) for entry in fuzzy + untranslated]
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("files", nargs="+")
+    parser.add_argument("-g", "--github-mode", help="Produce output as a GitHub comment", action='store_true')
+    opts = parser.parse_args()
+    missing_entries = list(itertools.chain.from_iterable(map(find_missing_entries, opts.files)))
+    if not missing_entries:
+        print(f"All entries translated, horray!{' :tada:' if opts.github_mode else ''}")
+    else:
+        missing_entries.sort(key = lambda entry: (entry.file, entry.line))
+        print("Entries missing translation, details follow:\n")
+        print(tabulate.tabulate(missing_entries,headers=["Reason", "File", "Line"], tablefmt="github"))
+
+
+if __name__ == "__main__":
+    main()