[PATCH v2] scanner: Fix reported executable name to 'wayland-scanner'

[Bryce Harrington]

'wayland-scanner -v' (correctly) reports the program as named
"wayland-scanner", but 'wayland-scanner -h' was inconsistent, referring
to it as './scanner'.

Also refactor this and other references to the program name to use a
common #define, PROGRAM_NAME.

Signed-off-by: Bryce Harrington <bryce at osg.samsung.com>
Reviewed-by: Jonas Ådahl <jadahl at gmail.com>
---
 src/scanner.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/scanner.c b/src/scanner.c
index 5f06e8e..d5442c1 100644
--- a/src/scanner.c
+++ b/src/scanner.c
@@ -42,6 +42,8 @@
 #if HAVE_LIBXML
 #include <libxml/parser.h>
 
+#define PROGRAM_NAME "wayland-scanner"
+
 /* Embedded wayland.dtd file, see dtddata.S */
 extern char DTD_DATA_begin;
 extern int DTD_DATA_len;
@@ -57,8 +59,8 @@ enum side {
 static int
 usage(int ret)
 {
-	fprintf(stderr, "usage: ./scanner [OPTION] [client-header|server-header|code]"
-		" [input_file output_file]\n");
+	fprintf(stderr, "usage: %s [OPTION] [client-header|server-header|code]"
+		" [input_file output_file]\n", PROGRAM_NAME);
 	fprintf(stderr, "\n");
 	fprintf(stderr, "Converts XML protocol descriptions supplied on "
 			"stdin or input file to client\n"
@@ -76,7 +78,7 @@ usage(int ret)
 static int
 scanner_version(int ret)
 {
-	fprintf(stderr, "wayland-scanner %s\n", WAYLAND_VERSION);
+	fprintf(stderr, "%s %s\n", PROGRAM_NAME, WAYLAND_VERSION);
 	exit(ret);
 }
 
@@ -236,7 +238,7 @@ static void *
 fail_on_null(void *p)
 {
 	if (p == NULL) {
-		fprintf(stderr, "wayland-scanner: out of memory\n");
+		fprintf(stderr, "%s: out of memory\n", PROGRAM_NAME);
 		exit(EXIT_FAILURE);
 	}
 
@@ -1467,7 +1469,7 @@ emit_header(struct protocol *protocol, enum side side)
 	const char *s = (side == SERVER) ? "SERVER" : "CLIENT";
 	char **p, *prev;
 
-	printf("/* Generated by wayland-scanner %s */\n\n", WAYLAND_VERSION);
+	printf("/* Generated by %s %s */\n\n", PROGRAM_NAME, WAYLAND_VERSION);
 
 	printf("#ifndef %s_%s_PROTOCOL_H\n"
 	       "#define %s_%s_PROTOCOL_H\n"
@@ -1670,7 +1672,7 @@ emit_code(struct protocol *protocol)
 	struct wl_array types;
 	char **p, *prev;
 
-	printf("/* Generated by wayland-scanner %s */\n\n", WAYLAND_VERSION);
+	printf("/* Generated by %s %s */\n\n", PROGRAM_NAME, WAYLAND_VERSION);
 
 	if (protocol->copyright)
 		format_text_to_comment(protocol->copyright, true);
-- 
1.9.1