prout

print out papers using libcups
git clone git://z3bra.org/prout
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commit b4d2e996413139a66e94aa25b1713510abbf6de1
parent 1db7617a472084a77b29fad1d9cec824505734f1
Author: Willy Goiffon <w.goiffon@gmail.com>
Date:   Sun Oct 20 21:46:19 2013

Added a usage() function

Diffstat:
 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); }