Revision: 55569
http://sourceforge.net/p/brlcad/code/55569
Author: carlmoore
Date: 2013-05-24 18:22:43 +0000 (Fri, 24 May 2013)
Log Message:
-----------
implement -h and -?; also, expand 2 error messages
Modified Paths:
--------------
brlcad/trunk/src/util/bw-pix.c
Modified: brlcad/trunk/src/util/bw-pix.c
===================================================================
--- brlcad/trunk/src/util/bw-pix.c 2013-05-24 12:33:53 UTC (rev 55568)
+++ brlcad/trunk/src/util/bw-pix.c 2013-05-24 18:22:43 UTC (rev 55569)
@@ -33,6 +33,10 @@
#include "bu.h"
+void
+printusage(void) {
+ bu_exit(3, "Usage: bw-pix [in.bw] [out.pix]\n");
+}
int
main(int argc, char **argv)
@@ -41,10 +45,13 @@
size_t in, out, num;
FILE *finp, *foutp;
+ if ( BU_STR_EQUAL(argv[1], "-h") || BU_STR_EQUAL(argv[1], "-?") )
+ printusage();
+
/* check for input file */
if (argc > 1) {
if ((finp = fopen(argv[1], "rb")) == NULL) {
- bu_exit(1, "bw-pix: can't open \"%s\"\n", argv[1]);
+ bu_exit(1, "bw-pix: can't open \"%s\" for reading\n", argv[1]);
}
} else
finp = stdin;
@@ -52,14 +59,13 @@
/* check for output file */
if (argc > 2) {
if ((foutp = fopen(argv[2], "wb")) == NULL) {
- bu_exit(2, "bw-pix: can't open \"%s\"\n", argv[2]);
+ bu_exit(2, "bw-pix: can't open \"%s\" for writing\n", argv[2]);
}
} else
foutp = stdout;
- if (argc > 3 || isatty(fileno(finp)) || isatty(fileno(foutp))) {
- bu_exit(3, "Usage: bw-pix [in.bw] [out.pix]\n");
- }
+ if (argc > 3 || isatty(fileno(finp)) || isatty(fileno(foutp)))
+ printusage();
while ((num = fread(ibuf, sizeof(char), 1024, finp)) > 0) {
size_t ret;
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