Add -h/--help to rpm2cpio (ticket #63)

- patch originally from Debian, with slight adjustments to indentation

diff --git a/rpm2cpio.c b/rpm2cpio.c
index eabefa1..e098385 100644 (file)
--- a/rpm2cpio.c
+++ b/rpm2cpio.c
@@ -23,8 +23,13 @@ int main(int argc, char *argv[])
     setprogname(argv[0]);      /* Retrofit glibc __progname */
     if (argc == 1)
        fdi = fdDup(STDIN_FILENO);
-    else
+    else {
+       if (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--help") == 0) {
+           fprintf(stderr, "Usage: rpm2cpio file.rpm\n");
+           exit(EXIT_FAILURE);
+       }
        fdi = Fopen(argv[1], "r.ufdio");
+    }
 
     if (Ferror(fdi)) {
        fprintf(stderr, "%s: %s: %s\n", argv[0],