1 files changed, 120 insertions, 0 deletions
diff --git a/vendor/optparse-master/examples/subcommands.c b/vendor/optparse-master/examples/subcommands.c
new file mode 100644
index 0000000..3d6238c
--- /dev/null
+++ b/vendor/optparse-master/examples/subcommands.c
@@ -0,0 +1,120 @@
+/* This is free and unencumbered software released into the public domain. */
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define OPTPARSE_IMPLEMENTATION
+#include "../optparse.h"
+
+static int cmd_echo(char **argv)
+{
+    int i, option;
+    bool newline = true;
+    struct optparse options;
+
+    optparse_init(&options, argv);
+    options.permute = 0;
+    while ((option = optparse(&options, "hn")) != -1) {
+        switch (option) {
+        case 'h':
+            puts("usage: echo [-hn] [ARG]...");
+            return 0;
+        case 'n':
+            newline = false;
+            break;
+        case '?':
+            fprintf(stderr, "%s: %s\n", argv[0], options.errmsg);
+            return 1;
+        }
+    }
+    argv += options.optind;
+
+    for (i = 0; argv[i]; i++) {
+        printf("%s%s", i  ? " " : "", argv[i]);
+    }
+    if (newline) {
+        putchar('\n');
+    }
+
+    fflush(stdout);
+    return !!ferror(stdout);
+}
+
+static int cmd_sleep(char **argv)
+{
+    int i, option;
+    struct optparse options;
+
+    optparse_init(&options, argv);
+    while ((option = optparse(&options, "h")) != -1) {
+        switch (option) {
+        case 'h':
+            puts("usage: sleep [-h] [NUMBER]...");
+            return 0;
+        case '?':
+            fprintf(stderr, "%s: %s\n", argv[0], options.errmsg);
+            return 1;
+        }
+    }
+
+    for (i = 0; argv[i]; i++) {
+        if (sleep(atoi(argv[i]))) {
+            return 1;
+        }
+    }
+    return 0;
+}
+
+static void
+usage(FILE *f)
+{
+    fprintf(f, "usage: example [-h] <echo|sleep> [OPTION]...\n");
+}
+
+int main(int argc, char **argv)
+{
+    int i, option;
+    char **subargv;
+    struct optparse options;
+
+    static const struct {
+        char name[8];
+        int (*cmd)(char **);
+    } cmds[] = {
+        {"echo",  cmd_echo },
+        {"sleep", cmd_sleep},
+    };
+    int ncmds = sizeof(cmds) / sizeof(*cmds);
+
+    (void)argc;
+    optparse_init(&options, argv);
+    options.permute = 0;
+    while ((option = optparse(&options, "h")) != -1) {
+        switch (option) {
+        case 'h':
+            usage(stdout);
+            return 0;
+        case '?':
+            usage(stderr);
+            fprintf(stderr, "%s: %s\n", argv[0], options.errmsg);
+            return 1;
+        }
+    }
+
+    subargv = argv + options.optind;
+    if (!subargv[0]) {
+        fprintf(stderr, "%s: missing subcommand\n", argv[0]);
+        usage(stderr);
+        return 1;
+    }
+
+    for (i = 0; i < ncmds; i++) {
+        if (!strcmp(cmds[i].name, subargv[0])) {
+            return cmds[i].cmd(subargv);
+        }
+    }
+    fprintf(stderr, "%s: invalid subcommand: %s\n", argv[0], subargv[0]);
+    return 1;
+}