1 files changed, 59 insertions(+), 0 deletions(-)

M c-impl/action.c

@@ 5,6 5,62 @@
 #define LIBR_IMPLEMENTATION
 #include "r.h"
 
+struct options {
+    const char* action;
+
+    enum {
+        NOOP = 0,
+        BIND,
+        TRIGGER,
+    } cmd;
+};
+
+static void print_usage(int fd, const char* prog)
+{
+    dprintf(fd, "usage: %s [OPTION]... ACTION\n", prog);
+    dprintf(fd, "\n");
+    dprintf(fd, "commands:\n");
+    dprintf(fd, "  -b       bind action\n");
+    dprintf(fd, "  -t       trigger action\n");
+    dprintf(fd, "  -h       print this message\n");
+}
+
+static void parse_options(struct options* o, int argc, char* argv[])
+{
+    memset(o, 0, sizeof(*o));
+
+    int res;
+    while((res = getopt(argc, argv, "bth")) != -1) {
+        switch(res) {
+        case 't': o->cmd = TRIGGER; break;
+        case 'b': o->cmd = BIND; break;
+        case 'h':
+        default:
+            print_usage(res == 'h' ? 1 : 2, argv[0]);
+            exit(res == 'h' ? 0 : 2);
+        }
+    }
+
+    if(optind + 1 == argc) {
+        o->action = argv[optind];
+        debug("action: %s", o->action);
+    } else {
+        if(optind >= argc) {
+            dprintf(2, "error: action not specified\n");
+        } else {
+            dprintf(2, "error: too many actions specified\n");
+        }
+        print_usage(2, argv[0]);
+        exit(2);
+    }
+
+    if(o->cmd == NOOP) {
+        dprintf(2, "error: command not specified\n");
+        print_usage(2, argv[0]);
+        exit(2);
+    }
+}
+
 struct state {
     int running;
 


@@ 69,6 125,9 @@ static void signalfd_handle_event(struct state* st)
 
 int main(int argc, char* argv[])
 {
+    struct options o;
+    parse_options(&o, argc, argv);
+
     struct state st = {
         .running = 1,
     };