wmc: Add support for long command-line options.

tools/wmc/wmc.c

@@ -25,6 +25,9 @@
 #include <stdlib.h>
 #include <string.h>
 #include <signal.h>
+#ifdef HAVE_GETOPT_H
+# include <getopt.h>
+#endif
 
 #include "wmc.h"
 #include "utils.h"
@@ -44,17 +47,17 @@ static const char usage[] =
 	"   -c                         Set 'custom-bit' in values\n"
 	"   -d                         Use decimal values in output\n"
 	"   -D                         Set debug flag\n"
-	"   -h          This message\n"
-	"   -H file     Write headerfile to file (default is inputfile.h)\n"
+	"   -h, --help                 Print this message\n"
+	"   -H FILE                    Write header file to FILE (default is inputfile.h)\n"
 	"   -i                         Inline messagetable(s)\n"
-	"   -o file     Output to file (default is inputfile.rc)\n"
-	"   -O fmt      Set output format (rc, res, pot)\n"
-	"   -P dir      Directory where to find po files\n"
-	"   -u          Inputfile is in unicode\n"
+	"   -o, --output=FILE          Output to FILE (default is infile.rc)\n"
+	"   -O, --output-format=FORMAT The output format (`rc', `res', or `pot')\n"
+	"   -P, --po-dir=DIR           Directory containing po files for translations\n"
+	"   -u                         Input file is in unicode\n"
 	"   -U                         Output unicode messagetable(s)\n"
 	"   -v                         Show supported codepages and languages\n"
-	"   -V          Print version end exit\n"
-	"   -W          Enable pedantic warnings\n"
+	"   -V, --version              Print version end exit\n"
+	"   -W, --pedantic             Enable pedantic warnings\n"
 	"Input is taken from stdin if no inputfile is specified.\n"
 	"Byteorder of unicode input is based upon the first couple of\n"
 	"bytes read, which should be 0x0000..0x00ff.\n"
@@ -128,7 +131,17 @@ static enum
     FORMAT_POT
 } output_format;
 
-int getopt (int argc, char *const *argv, const char *optstring);
+static const char short_options[] = "B:cdDhH:io:O:P:uUvVW";
+static const struct option long_options[] =
+{
+	{ "help", 0, NULL, 'h' },
+	{ "output", 1, NULL, 'o' },
+	{ "output-format", 1, NULL, 'O' },
+	{ "pedantic", 0, NULL, 'W' },
+	{ "po-dir", 1, NULL, 'P' },
+	{ "version", 0, NULL, 'v' }
+};
+
 static void segvhandler(int sig);
 
 static void cleanup_files(void)
@@ -147,6 +160,7 @@ int main(int argc,char *argv[])
 	extern char* optarg;
 	extern int   optind;
 	int optc;
+	int opti = 0;
 	int lose = 0;
 	int ret;
 	int i;
@@ -176,7 +190,7 @@ int main(int argc,char *argv[])
 			strcat(cmdline, " ");
 	}
 
-	while((optc = getopt(argc, argv, "B:cdDhH:io:O:P:uUvVW")) != EOF)
+	while((optc = getopt_long(argc, argv, short_options, long_options, &opti)) != EOF)
 	{
 		switch(optc)
 		{
@@ -325,7 +339,7 @@ int main(int argc,char *argv[])
 		write_bin_files();
             break;
         case FORMAT_RES:
-            if (po_dir) add_translations( po_dir );
+            add_translations( po_dir );
             write_res_file( output_name );
             break;
         case FORMAT_POT:

tools/wmc/wmc.man.in

@@ -34,8 +34,8 @@ NON-FUNCTIONAL; Use decimal values in output
 .B \-D
 Set debug flag. This results is a parser trace and a lot of extra messages.
 .TP
-.B \-h
-Print an informative usage message.
+.BR \-h ,\  \-\-help
+Print an informative usage message and exits.
 .TP
 .BI \-H\  file
 Write headerfile to \fIfile\fR. Default is \fIinputfile.h\fR.
@@ -45,14 +45,14 @@ Inline messagetable(s). This option skips the generation of all \fI.bin\fR files
 and writes all output into the \fI.rc\fR file. This encoding is parsable with
 wrc(1).
 .TP
-.BI \-o\  file
+.BR \-o ,\  \-\-output =\fIfile
 Output to \fIfile\fR. Default is \fIinputfile.rc\fR.
 .TP
-.BI \-O\  format
+.BR \-O ,\  \-\-output\-format =\fIformat
 Set the output format. Supported formats are \fBrc\fR (the default),
 \fBres\fR, and \fBpot\fR.
 .TP
-.BI \-P\  directory
+.BR \-P ,\  \-\-po-dir =\fIdirectory
 Enable the generation of resource translations based on po files
 loaded from the specified directory. That directory must follow the
 gettext convention, in particular in must contain one \fI.po\fR file for
@@ -67,10 +67,10 @@ Write resource output in unicode formatted messagetable(s).
 .B \-v
 Show all supported codepages and languages.
 .TP
-.B \-V
+.BR \-V ,\  \-\-version
 Print version end exit.
 .TP
-.B \-W
+.BR \-W ,\  \-\-pedantic
 Enable pedantic warnings.
 .SH EXTENSIONS
 The original syntax is extended to support codepages more smoothly. Normally,