Parse gettext command and generate rule.

backends.py

@@ -503,7 +503,17 @@ class NinjaBackend(Backend):
              ninja_quote(self.environment.get_build_dir()))
         outfile.write(" command = '%s' '%s' '%s' '%s' --backend ninja secret-handshake\n" % c)
         outfile.write(' description = Regenerating build files\n')
-        outfile.write(' generator = 1\n\n')
+        outfile.write(' generator = 1\n')
+        if len(self.build.pot) > 0:
+            self.generate_gettext_rules(outfile)
+        outfile.write('\n')
+
+    def generate_gettext_rules(self, outfile):
+        rule = 'rule GEN_POT\n'
+        command = " command = xgettext -p '$OUTDIR' -D '%s' -k_ -o '$OUTFILE'\n" % \
+        self.environment.get_source_dir()
+        outfile.write(rule)
+        outfile.write(command)
 
     def generate_static_link_rules(self, is_cross, outfile):
         if is_cross:

build.py

@@ -31,6 +31,7 @@ class Build:
         self.static_linker = None
         self.static_cross_linker = None
         self.configure_files = []
+        self.pot = []
 
     def add_compiler(self, compiler):
         if len(self.compilers) == 0:

interpreter.py

@@ -881,6 +881,7 @@ class Interpreter():
                       'find_library' : self.func_find_library,
                       'configuration_data' : self.func_configuration_data,
                       'run_command' : self.func_run_command,
+                      'gettext' : self.func_gettext,
                       }
 
     def get_build_def_files(self):
@@ -981,6 +982,20 @@ class Interpreter():
                 raise InterpreterObject('Run_command arguments must be strings.')
         return RunProcess(args, os.path.join(self.environment.source_dir, self.subdir))
 
+    def func_gettext(self, nodes, args, kwargs):
+        if len(args) != 1:
+            raise InterpreterException('Gettext requires one positional argument (package name).')
+        packagename = args[0]
+        if not isinstance(packagename, str):
+            raise InterpreterException('Gettext argument is not a string.')
+        languages = kwargs.get('languages', None)
+        if not isinstance(languages, list):
+            raise InterpreterException('Argument languages must be a list of strings.')
+        # TODO: check that elements are strings
+        if len(self.build.pot) > 0:
+            raise InterpreterException('More than one gettext definitions currently not supported.')
+        self.build.pot.append((packagename, languages))
+
     def func_configuration_data(self, node, args, kwargs):
         if len(args) != 0:
             raise InterpreterException('configuration_data takes no arguments')

test cases/frameworks/6 gettext/po/meson.build

@@ -1,5 +1,4 @@
 langs = ['fi', 'de']
 
 gettext('intltest',
-languages : langs,
-dirs : '../src')
+languages : langs)