prout

commit b4d2e996413139a66e94aa25b1713510abbf6de1
parent 1db7617a472084a77b29fad1d9cec824505734f1
Author: Willy Goiffon <w.goiffon@gmail.com>
Date:   Sun, 20 Oct 2013 21:46:19 +0200

Added a usage() function

Diffstat:
M
src/prout.c
 | 
10
++++++++--

1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/src/prout.c b/src/prout.c
@@ -19,6 +19,12 @@
 #include <stdbool.h>
 #include <cups/cups.h>
 
+/* Usage function */
+static void usage()
+{
+    fputs("usage: prout [-o opt=value,...] <file>\n", stdout);
+}
+
 /* Return the file name if the file is opennable. exit instead */
 static char* check_file(char *file)
 {
@@ -148,8 +154,8 @@ int main(int argc, char **argv)
     char *file;
 
     /* check the input file */
-    if (argc != 2 ) {
-        fputs("I can only handle one file at a time\n", stderr);
+    if (argc < 2 ) {
+        usage();
         exit (1);
     }