opt: add OPT_EARLY and opt_early_parse.

[ccan] / ccan / opt / parse.c

diff --git a/ccan/opt/parse.c b/ccan/opt/parse.c
index b92bcb14871eed40e4873e8473ac1c359e46d5e7..5b2cec8b3d284e0b6795c87355d6ae00cf1290b9 100644 (file)
--- a/ccan/opt/parse.c
+++ b/ccan/opt/parse.c
@@ -29,12 +29,12 @@ static void consume_option(int *argc, char *argv[], unsigned optnum)
 }
 
 /* Returns 1 if argument consumed, 0 if all done, -1 on error. */
-int parse_one(int *argc, char *argv[], unsigned *offset,
+int parse_one(int *argc, char *argv[], enum opt_type is_early, unsigned *offset,
              void (*errlog)(const char *fmt, ...))
 {
        unsigned i, arg, len;
        const char *o, *optarg = NULL;
-       char *problem;
+       char *problem = NULL;
 
        if (getenv("POSIXLY_CORRECT")) {
                /* Don't find options after non-options. */
@@ -91,11 +91,12 @@ int parse_one(int *argc, char *argv[], unsigned *offset,
                len = 2;
        }
 
-       if (opt_table[i].type == OPT_NOARG) {
+       if ((opt_table[i].type & ~OPT_EARLY) == OPT_NOARG) {
                if (optarg)
                        return parse_err(errlog, argv[0], o, len,
                                         "doesn't allow an argument");
-               problem = opt_table[i].cb(opt_table[i].u.arg);
+               if ((opt_table[i].type & OPT_EARLY) == is_early)
+                       problem = opt_table[i].cb(opt_table[i].u.arg);
        } else {
                if (!optarg) {
                        /* Swallow any short options as optarg, eg -afile */
@@ -108,7 +109,9 @@ int parse_one(int *argc, char *argv[], unsigned *offset,
                if (!optarg)
                        return parse_err(errlog, argv[0], o, len,
                                         "requires an argument");
-               problem = opt_table[i].cb_arg(optarg, opt_table[i].u.arg);
+               if ((opt_table[i].type & OPT_EARLY) == is_early)
+                       problem = opt_table[i].cb_arg(optarg,
+                                                     opt_table[i].u.arg);
        }
 
        if (problem) {