Add help text to dolcon-launch.

diff --git a/clients/gui-shell/launch.c b/clients/gui-shell/launch.c
index 604af4a..bef20ce 100644 (file)
--- a/clients/gui-shell/launch.c
+++ b/clients/gui-shell/launch.c
@@ -48,8 +48,27 @@ int running(char *pf)
 
 int main(int argc, char **argv)
 {
+    int c;
     char cf[1024], pf[1024];
     
+    while((c = getopt(argc, argv, "h")) != -1) {
+       switch(c) {
+       case 'h':
+           printf("usage: dolcon-launch [-h]\n");
+           printf("\t-h\tDisplay this help message\n");
+           printf("\n");
+           printf("\tIf $HOME/.doldacond.conf does not exist, dolcon-launch will run\n");
+           printf("\tdolconf. Otherwise, if $HOME/.doldacond.pid does not exist,\n");
+           printf("\tor does not contain a valid PID, dolcon-launch will run\n");
+           printf("\tdoldacond-shell. Otherwise, dolcon-launch will run dolcon. All\n");
+           printf("\tthese programs must be somewhere in $PATH for dolcon-launch to work.\n");
+           exit(0);
+           break;
+       default:
+           fprintf(stderr, "usage: dolcon-launch [-h]\n");
+           exit(1);
+       }
+    }
     if(getenv("HOME") != NULL)
        snprintf(cf, sizeof(cf), "%s/.doldacond.conf", getenv("HOME"));
     else