Sun bug 4486226: Xpm is not internationalized

<http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=4486226>
Use gettext() to allow translated messages in sxpm & cxpm
(cherry picked from bcda4f17ab3fa9f0572f876dbeb09b45fbc23f3d commit)

6 files changed, 152 insertions, 26 deletions

diff --git a/acinclude.m4 b/acinclude.m4
new file mode 100644
index 0000000..4c60e33
--- /dev/null
+++ b/acinclude.m4
@@ -0,0 +1,15 @@
+# AC_DEFINE_DIR macro from autoconf-archive.cryp.to
+AC_DEFUN([AC_DEFINE_DIR], [
+  prefix_NONE=
+  exec_prefix_NONE=
+  test "x$prefix" = xNONE && prefix_NONE=yes && prefix=$ac_default_prefix
+  test "x$exec_prefix" = xNONE && exec_prefix_NONE=yes && exec_prefix=$prefix
+dnl In Autoconf 2.60, ${datadir} refers to ${datarootdir}, which in turn
+dnl refers to ${prefix}.  Thus we have to use `eval' twice.
+  eval ac_define_dir="\"[$]$2\""
+  eval ac_define_dir="\"$ac_define_dir\""
+  AC_SUBST($1, "$ac_define_dir")
+  AC_DEFINE_UNQUOTED($1, "$ac_define_dir", [$3])
+  test "$prefix_NONE" && prefix=NONE
+  test "$exec_prefix_NONE" && exec_prefix=NONE
+])
diff --git a/configure.ac b/configure.ac
index 5dad93d..ff7e245 100644
--- a/configure.ac
+++ b/configure.ac
@@ -33,6 +33,26 @@ if test "x$GCC" = "xyes"; then
 	CFLAGS="$GCC_WARNINGS $CFLAGS"
 fi
 
+# Internationalization & localization support
+AC_SEARCH_LIBS([gettext], [intl], [USE_GETTEXT="yes"], [USE_GETTEXT="no"])
+AC_MSG_CHECKING([where to install localized messages])
+AC_ARG_WITH([localedir], AC_HELP_STRING([--with-localedir=<path>],
+	[Path to install message files in (default: datadir/locale)]),
+	[LOCALEDIR=${withval}], [LOCALEDIR=${datadir}/locale])
+AC_DEFINE_DIR([LOCALEDIR], [LOCALEDIR], [Location of translated messages])
+if test "x$LOCALEDIR" = "xno" -o "x$USE_GETTEXT" = "xno" ; then
+	AC_MSG_RESULT([nowhere])
+	USE_GETTEXT="no"
+else
+	AC_MSG_RESULT([$LOCALEDIR])
+fi
+
+if test "x$USE_GETTEXT" = "xyes" ; then
+	AC_DEFINE([USE_GETTEXT], 1, 
+		  [Define to 1 if you want to use the gettext() function.])
+fi
+AM_CONDITIONAL(USE_GETTEXT, test "x$USE_GETTEXT" = "xyes")
+
 # Optional feature: When ___.xpm is requested, also look for ___.xpm.Z & .gz
 # Replaces ZFILEDEF = -DSTAT_ZFILE in old Imakefile
 AC_ARG_ENABLE(stat-zfile,
diff --git a/cxpm/Makefile.am b/cxpm/Makefile.am
index 4a1faa9..eea6dae 100644
--- a/cxpm/Makefile.am
+++ b/cxpm/Makefile.am
@@ -37,3 +37,11 @@ SUFFIXES = .$(APP_MAN_SUFFIX) .man
 .man.$(APP_MAN_SUFFIX):
 	sed $(MAN_SUBSTS) < $< > $@
 
+if USE_GETTEXT
+noinst_DATA = cxpm.po
+
+cxpm.po: $(cxpm_SOURCES)
+	xgettext -c"L10N_Comments" -d cxpm -n $(cxpm_SOURCES)
+
+CLEANFILES += cxpm.po
+endif
diff --git a/cxpm/cxpm.c b/cxpm/cxpm.c
index 6a7cd9d..3b5e603 100644
--- a/cxpm/cxpm.c
+++ b/cxpm/cxpm.c
@@ -34,7 +34,16 @@
 
 #define CXPMPROG
 
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
 #include "XpmI.h"
+#ifdef USE_GETTEXT
+#include <locale.h>
+#include <libintl.h>
+#else
+#define gettext(a) (a)
+#endif
 
 #undef xpmGetC
 #define xpmGetC(data) sGetc(data, data->stream.file)
@@ -86,9 +95,9 @@ sUngetc(data, c, file)
 #include "Image.c"
 
 void
-ErrorMessage(ErrorStatus, data)
-    int ErrorStatus;
-    xpmData *data;
+ErrorMessage(
+    int ErrorStatus,
+    xpmData *data)
 
 {
     char *error = NULL;
@@ -97,23 +106,36 @@ ErrorMessage(ErrorStatus, data)
     case XpmSuccess:
 	return;
     case XpmOpenFailed:
-	error = "Cannot open file";
+	/* L10N_Comments : Error produced when filename does not exist 
+	   or insufficient permissions to open (i.e. cxpm /no/such/file ) */
+	error = gettext("Cannot open file");
 	break;
     case XpmFileInvalid:
-	error = "Invalid XPM file";
+	/* L10N_Comments : Error produced when filename can be read, but
+	   is not an XPM file (i.e. cxpm /dev/null ) */
+	error = gettext("Invalid XPM file");
 	break;
     case XpmNoMemory:
-	error = "Not enough memory";
+	/* L10N_Comments : Error produced when filename can be read, but
+	   is too big for memory 
+	   (i.e. limit datasize 32 ; cxpm /usr/dt/backdrops/Crochet.pm ) */
+	error = gettext("Not enough memory");
 	break;
     case XpmColorFailed:
-	error = "Failed to parse color";
+	/* L10N_Comments : Error produced when filename can be read, but
+	   contains an invalid color specification (need to create test case)*/
+	error = gettext("Failed to parse color");
 	break;
     }
 
     if (error) {
-	fprintf(stderr, "Xpm Error: %s.\n", error);
+	/* L10N_Comments : Wrapper around above Xpm errors - %s is
+	   replaced with the contents of the error message retrieved above */
+	fprintf(stderr, gettext("Xpm Error: %s.\n"), error);
 	if (ErrorStatus == XpmFileInvalid && data)
-	  fprintf(stderr, "Error found line %d near character %d\n",
+	/* L10N_Comments : Error produced when filename can be read, but
+	   is not an XPM file (i.e. cxpm /dev/null ) */
+	  fprintf(stderr, gettext("Error found line %d near character %d\n"),
 		  data->lineNum + 1,
 		  data->charNum + 1);
 	exit(1);
@@ -130,9 +152,17 @@ main(argc, argv)
     int ErrorStatus;
     xpmData data;
 
+#ifdef USE_GETTEXT
+    setlocale(LC_ALL,"");
+    bindtextdomain("cxpm",LOCALEDIR);
+    textdomain("cxpm");
+#endif
+
     if (argc > 1) {
         if (!strcmp(argv[1], "-?") || !strncmp(argv[1], "-h", 2)) {
-	    fprintf(stderr, "Usage: %s [filename]\n", argv[0]);
+	    /* L10N_Comments : Usage message produced by running cxpm -h
+		%s will be replaced by argv[0] (program name) */
+	    fprintf(stderr, gettext("Usage: %s [filename]\n"), argv[0]);
 	    exit(1);
 	}
         filename = argv[1];
diff --git a/sxpm/Makefile.am b/sxpm/Makefile.am
index 1b63cb3..04571de 100644
--- a/sxpm/Makefile.am
+++ b/sxpm/Makefile.am
@@ -42,6 +42,14 @@ SUFFIXES = .$(APP_MAN_SUFFIX) .man
 .man.$(APP_MAN_SUFFIX):
 	sed $(MAN_SUBSTS) < $< > $@
 
+if USE_GETTEXT
+noinst_DATA = sxpm.po
+
+sxpm.po: $(sxpm_SOURCES)
+	xgettext -c"L10N_Comments" -d sxpm -n $(sxpm_SOURCES)
+
+CLEANFILES += sxpm.po
+endif
 endif
 
 EXTRA_DIST = \
diff --git a/sxpm/sxpm.c b/sxpm/sxpm.c
index 9d0b42e..a43d441 100644
--- a/sxpm/sxpm.c
+++ b/sxpm/sxpm.c
@@ -32,6 +32,10 @@
 *  Developed by Arnaud Le Hors                                                *
 \*****************************************************************************/
 
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <X11/StringDefs.h>
@@ -47,6 +51,13 @@
 
 #include <X11/xpm.h>
 
+#ifdef USE_GETTEXT
+#include <locale.h>
+#include <libintl.h>
+#else
+#define gettext(a) (a)
+#endif
+
 /* XPM */
 /* plaid pixmap */
 static char *plaid[] = {
@@ -158,11 +169,19 @@ main(argc, argv)
     char *buffer;
 #endif
 
+#ifdef USE_GETTEXT
+    XtSetLanguageProc(NULL,NULL,NULL);
+    bindtextdomain("sxpm",LOCALEDIR);
+    textdomain("sxpm");
+#endif
+
     topw = XtInitialize(argv[0], "Sxpm",
 			options, XtNumber(options), &argc, argv);
 
     if (!topw) {
-	fprintf(stderr, "Sxpm Error... [ Undefined DISPLAY ]\n");
+	/* L10N_Comments : Error if no $DISPLAY or $DISPLAY can't be opened.
+	   Not normally reached as Xt exits before we get here. */
+	fprintf(stderr, gettext("Sxpm Error... [ Undefined DISPLAY ]\n"));
 	exit(1);
     }
     colormap = XDefaultColormapOfScreen(XtScreen(topw));
@@ -467,7 +486,9 @@ main(argc, argv)
 	    unsigned int i, j;
 
 	    for (i = 0; i < view.attributes.nextensions; i++) {
-		fprintf(stderr, "Xpm extension : %s\n",
+		/* L10N_Comments : Output when -v & file has extensions 
+		   %s is replaced by extension name */
+		fprintf(stderr, gettext("Xpm extension : %s\n"),
 			view.attributes.extensions[i].name);
 		for (j = 0; j < view.attributes.extensions[i].nlines; j++)
 		    fprintf(stderr, "\t\t%s\n",
@@ -559,8 +580,10 @@ main(argc, argv)
 void
 Usage()
 {
-    fprintf(stderr, "\nUsage:  %s [options...]\n", command[0]);
-    fprintf(stderr, "Where options are:\n\
+    /* L10N_Comments : Usage message (sxpm -h) in two parts. 
+       In the first part %s is replaced by the command name. */
+    fprintf(stderr, gettext("\nUsage:  %s [options...]\n"), command[0]);
+    fprintf(stderr, gettext("Where options are:\n\
 \n\
 [-d host:display]            Display to connect to.\n\
 [-g geom]                    Geometry of window.\n\
@@ -587,7 +610,7 @@ Usage()
 [-version]                   Print out program's version number\n\
                              and library's version number if different.\n\
 if no input is specified sxpm reads from standard input.\n\
-\n");
+\n"));
     exit(0);
 }
 
@@ -604,27 +627,48 @@ ErrorMessage(ErrorStatus, tag)
     case XpmSuccess:
 	return;
     case XpmColorError:
-	warning = "Could not parse or alloc requested color";
+/* L10N_Comments : The following set of messages are classified as 
+   either errors or warnings.  Based on the class of message, different
+   wrappers are selected at the end to state the message source & class. 
+
+	   L10N_Comments : WARNING produced when filename can be read, but
+	   contains an invalid color specification (need to create test case)*/
+	warning = gettext("Could not parse or alloc requested color");
 	break;
     case XpmOpenFailed:
-	error = "Cannot open file";
+	/* L10N_Comments : ERROR produced when filename does not exist 
+	   or insufficient permissions to open (i.e. sxpm /no/such/file ) */
+	error = gettext("Cannot open file");
 	break;
     case XpmFileInvalid:
-	error = "Invalid XPM file";
+	/* L10N_Comments : ERROR produced when filename can be read, but
+	   is not an XPM file (i.e. sxpm /dev/null ) */
+	error = gettext("Invalid XPM file");
 	break;
     case XpmNoMemory:
-	error = "Not enough memory";
+	/* L10N_Comments : ERROR produced when filename can be read, but
+	   is too big for memory 
+	   (i.e. limit datasize 32 ; sxpm /usr/dt/backdrops/Crochet.pm ) */
+	error = gettext("Not enough memory");
 	break;
     case XpmColorFailed:
-	error = "Failed to parse or alloc some color";
+	/* L10N_Comments : ERROR produced when filename can be read, but
+	   contains an invalid color specification (need to create test case)*/
+	error = gettext("Failed to parse or alloc some color");
 	break;
     }
 
     if (warning)
-	fprintf(stderr, "%s Xpm Warning: %s.\n", tag, warning);
+	/* L10N_Comments : Wrapper around above WARNING messages.
+	   First %s is the tag for the operation that produced the warning.
+	   Second %s is the message selected from the above set. */
+	fprintf(stderr, gettext("%s Xpm Warning: %s.\n"), tag, warning);
 
     if (error) {
-	fprintf(stderr, "%s Xpm Error: %s.\n", tag, error);
+	/* L10N_Comments : Wrapper around above ERROR messages.
+	   First %s is the tag for the operation that produced the error.
+	   Second %s is the message selected from the above set */
+	fprintf(stderr, gettext("%s Xpm Error: %s.\n"), tag, error);
 	Punt(1);
     }
 }
@@ -695,15 +739,16 @@ VersionInfo()
     char libminor;
 
     GetNumbers(XpmIncludeVersion, &format, &libmajor, &libminor);
-    fprintf(stderr, "sxpm version: %d.%d%c\n",
+    /* L10N_Comments : sxpm -version output */
+    fprintf(stderr, gettext("sxpm version: %d.%d%c\n"),
 	    format, libmajor, libminor);
-    /*
+    /* L10N_Comments :
      * if we are linked to an XPM library different from the one we've been
-     * compiled with, print its own number too.
+     * compiled with, print its own number too when sxpm -version is called.
      */
     if (XpmIncludeVersion != XpmLibraryVersion()) {
 	GetNumbers(XpmLibraryVersion(), &format, &libmajor, &libminor);
-	fprintf(stderr, "using the XPM library version: %d.%d%c\n",
+	fprintf(stderr, gettext("using the XPM library version: %d.%d%c\n"),
 		format, libmajor, libminor);
     }
 }