Add warning about known issues to documentation of cvsimport

[git.git] / parse-options.c

diff --git a/parse-options.c b/parse-options.c
index 4c5d09dd25aede8ea7e14886f5c17ed847a8f0d9..cf71bcffd2e1e9aeacb44df488b0825f09d54255 100644 (file)
--- a/parse-options.c
+++ b/parse-options.c
@@ -244,6 +244,9 @@ void parse_options_start(struct parse_opt_ctx_t *ctx,
        ctx->out  = argv;
        ctx->cpidx = ((flags & PARSE_OPT_KEEP_ARGV0) != 0);
        ctx->flags = flags;
+       if ((flags & PARSE_OPT_KEEP_UNKNOWN) &&
+           (flags & PARSE_OPT_STOP_AT_NON_OPTION))
+               die("STOP_AT_NON_OPTION and KEEP_UNKNOWN don't go together");
 }
 
 static int usage_with_options_internal(const char * const *,
@@ -253,6 +256,8 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
                       const struct option *options,
                       const char * const usagestr[])
 {
+       int internal_help = !(ctx->flags & PARSE_OPT_NO_INTERNAL_HELP);
+
        /* we must reset ->opt, unknown short option leave it dangling */
        ctx->opt = NULL;
 
@@ -268,18 +273,18 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
 
                if (arg[1] != '-') {
                        ctx->opt = arg + 1;
-                       if (*ctx->opt == 'h')
+                       if (internal_help && *ctx->opt == 'h')
                                return parse_options_usage(usagestr, options);
                        switch (parse_short_opt(ctx, options)) {
                        case -1:
                                return parse_options_usage(usagestr, options);
                        case -2:
-                               return PARSE_OPT_UNKNOWN;
+                               goto unknown;
                        }
                        if (ctx->opt)
                                check_typos(arg + 1, options);
                        while (ctx->opt) {
-                               if (*ctx->opt == 'h')
+                               if (internal_help && *ctx->opt == 'h')
                                        return parse_options_usage(usagestr, options);
                                switch (parse_short_opt(ctx, options)) {
                                case -1:
@@ -292,7 +297,7 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
                                         */
                                        ctx->argv[0] = xstrdup(ctx->opt - 1);
                                        *(char *)ctx->argv[0] = '-';
-                                       return PARSE_OPT_UNKNOWN;
+                                       goto unknown;
                                }
                        }
                        continue;
@@ -306,16 +311,22 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
                        break;
                }
 
-               if (!strcmp(arg + 2, "help-all"))
+               if (internal_help && !strcmp(arg + 2, "help-all"))
                        return usage_with_options_internal(usagestr, options, 1);
-               if (!strcmp(arg + 2, "help"))
+               if (internal_help && !strcmp(arg + 2, "help"))
                        return parse_options_usage(usagestr, options);
                switch (parse_long_opt(ctx, arg + 2, options)) {
                case -1:
                        return parse_options_usage(usagestr, options);
                case -2:
-                       return PARSE_OPT_UNKNOWN;
+                       goto unknown;
                }
+               continue;
+unknown:
+               if (!(ctx->flags & PARSE_OPT_KEEP_UNKNOWN))
+                       return PARSE_OPT_UNKNOWN;
+               ctx->out[ctx->cpidx++] = ctx->argv[0];
+               ctx->opt = NULL;
        }
        return PARSE_OPT_DONE;
 }
@@ -356,6 +367,9 @@ int parse_options(int argc, const char **argv, const struct option *options,
 int usage_with_options_internal(const char * const *usagestr,
                                const struct option *opts, int full)
 {
+       if (!usagestr)
+               return PARSE_OPT_HELP;
+
        fprintf(stderr, "usage: %s\n", *usagestr++);
        while (*usagestr && **usagestr)
                fprintf(stderr, "   or: %s\n", *usagestr++);