[PATCH] Add per-option help

[fio.git] / parse.c

diff --git a/parse.c b/parse.c
index 50d8ae5e5f4fe56ea12ba5ff33ca76fe48e114a4..7ff474b1dfec5f1daaa31418910aaad4e6fda1fc 100644 (file)
--- a/parse.c
+++ b/parse.c
@@ -361,3 +361,34 @@ int parse_option(const char *opt, struct fio_option *options, void *data)
        fprintf(stderr, "fio: failed parsing %s\n", opt);
        return 1;
 }
+
+int show_cmd_help(struct fio_option *options, const char *name)
+{
+       int show_all = !strcmp(name, "all");
+       struct fio_option *o = &options[0];
+       const char *typehelp[] = {
+               "string (opt=bla)",
+               "string with possible k/m/g postfix (opt=4k)",
+               "string with range and postfix (opt=1k-4k)",
+               "string with time postfix (opt=10s)",
+               "string (opt=bla)",
+               "string with dual range (opt=1k-4k,4k-8k)",
+               "integer value (opt=100)",
+               "no argument (opt)",
+       };
+
+       while (o->name) {
+               int match = !strcmp(name, o->name);
+
+               if (show_all || match) {
+                       printf("%s: %s\n", o->name, o->help);
+                       if (match)
+                               printf("type: %s\n", typehelp[o->type]);
+               }
+
+               o++;
+       }
+
+
+       return 0;
+}