From: Nick Bowler <nbowler@draconx.ca>
Date: Tue, 4 Oct 2011 22:14:05 +0000 (-0400)
Subject: Add support for translated long options.
X-Git-Tag: v1~85
X-Git-Url: https://git.draconx.ca/gitweb/cdecl99.git/commitdiff_plain/87278972ae64ef4c5eff110af1565b1988160fb4

Add support for translated long options.
---

diff --git a/Makefile.am b/Makefile.am
index 0632878..c802b2d 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -77,7 +77,7 @@ XGETTEXT_OPTS = -D $(builddir) -D $(srcdir) --from-code=utf-8 \
 	--add-comments=TRANSLATORS: --foreign-user \
 	--package-name=$(PACKAGE) --package-version=$(PACKAGE_VERSION) \
 	--msgid-bugs-address=$(PACKAGE_BUGREPORT) \
-	--keyword=_ --keyword=N_
+	--keyword=_ --keyword=N_ --keyword=PN_:1c,2
 
 po/$(PACKAGE).pot: $(SOURCES) src/errors.lst
 	$(AM_V_at)  $(MKDIR_P) $(@D)
diff --git a/cfgtail.h b/cfgtail.h
new file mode 100644
index 0000000..6368d76
--- /dev/null
+++ b/cfgtail.h
@@ -0,0 +1,4 @@
+/* Allow ENABLE_NLS to be used in C conditionals. */
+#ifndef ENABLE_NLS
+#	define ENABLE_NLS 0
+#endif
diff --git a/configure.ac b/configure.ac
index 8576628..dcb5504 100644
--- a/configure.ac
+++ b/configure.ac
@@ -39,6 +39,8 @@ BISON_I18N
 GLOBAL_SYMBOL_PIPE=$lt_cv_sys_global_symbol_pipe
 AC_SUBST([GLOBAL_SYMBOL_PIPE])
 
+AH_BOTTOM([#include <cfgtail.h>])
+
 AC_CONFIG_FILES([
 	exported.sh
 	Makefile
diff --git a/src/cdecl99.c b/src/cdecl99.c
index c5f913b..c70834f 100644
--- a/src/cdecl99.c
+++ b/src/cdecl99.c
@@ -27,18 +27,26 @@
 #include "readline.h"
 #include "cdecl.h"
 
+#define N_(x) x
+#define PN_(c, x) x
+
 static const char *progname = "cdecl99";
 static const char sopts[] = "qbif:e:VH";
-static const struct option lopts[] = {
-	{ "quiet",       0, NULL, 'q' },
-	{ "batch",       0, NULL, 'b' },
-	{ "interactive", 0, NULL, 'i' },
-	{ "file",        1, NULL, 'f' },
-	{ "execute",     1, NULL, 'e' },
-	{ "version",     0, NULL, 'V' },
-	{ "help",        0, NULL, 'H' },
-	{ 0 }
-};
+#define RAW_LOPTS \
+	{ PN_("longopt", "quiet"),       0, NULL, 'q' }, \
+	{ PN_("longopt", "batch"),       0, NULL, 'b' }, \
+	{ PN_("longopt", "interactive"), 0, NULL, 'i' }, \
+	{ PN_("longopt", "file"),        1, NULL, 'f' }, \
+	{ PN_("longopt", "execute"),     1, NULL, 'e' }, \
+	{ PN_("longopt", "version"),     0, NULL, 'V' }, \
+	{ PN_("longopt", "help"),        0, NULL, 'H' }
+
+/*
+ * With NLS, we need a buffer big enough to store the translated options.
+ * The translations will be filled in at program startup.
+ */
+enum { NOPTS = sizeof (struct option[]){RAW_LOPTS} / sizeof (struct option) };
+static struct option lopts[NOPTS + !!ENABLE_NLS * NOPTS + 1] = { RAW_LOPTS };
 
 static void print_version(void)
 {
@@ -322,6 +330,22 @@ static int repl_noninteractive(void)
 	return ret;
 }
 
+/* Initialize gettext and setup translated long options. */
+static void init_i18n(void)
+{
+	setlocale(LC_ALL, "");
+	bindtextdomain(PACKAGE, LOCALEDIR);
+	textdomain(PACKAGE);
+
+	if (!ENABLE_NLS)
+		return;
+
+	for (int i = 0; i < NOPTS; i++) {
+		lopts[i+NOPTS] = lopts[i];
+		lopts[i+NOPTS].name = pgettext_expr("longopt", lopts[i].name);
+	}
+}
+
 int main(int argc, char **argv)
 {
 	bool show_intro = true, interactive = true, execute = false;
@@ -331,10 +355,7 @@ int main(int argc, char **argv)
 	if (argc > 0)
 		progname = argv[0];
 
-	/* Initialize gettext. */
-	setlocale(LC_ALL, "");
-	bindtextdomain(PACKAGE, LOCALEDIR);
-	textdomain(PACKAGE);
+	init_i18n();
 
 	while ((opt = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) {
 		switch (opt) {