test-lib: allow exit trap to be used for cleanup by tests

[git.git] / parse-options.c

diff --git a/parse-options.c b/parse-options.c
index c52b8ccf59a4848be6f3f810e01029f7c6625c78..b85cab2466244ec3c8ea97dc0882c2971e7b8061 100644 (file)
--- a/parse-options.c
+++ b/parse-options.c
@@ -31,11 +31,20 @@ static int get_arg(struct parse_opt_ctx_t *p, const struct option *opt,
        return 0;
 }
 
+static void fix_filename(const char *prefix, const char **file)
+{
+       if (!file || !*file || !prefix || is_absolute_path(*file)
+           || !strcmp("-", *file))
+               return;
+       *file = xstrdup(prefix_filename(prefix, strlen(prefix), *file));
+}
+
 static int get_value(struct parse_opt_ctx_t *p,
                     const struct option *opt, int flags)
 {
        const char *s, *arg;
        const int unset = flags & OPT_UNSET;
+       int err;
 
        if (unset && p->opt)
                return opterror(opt, "takes no value", flags);
@@ -95,6 +104,19 @@ static int get_value(struct parse_opt_ctx_t *p,
                        return get_arg(p, opt, flags, (const char **)opt->value);
                return 0;
 
+       case OPTION_FILENAME:
+               err = 0;
+               if (unset)
+                       *(const char **)opt->value = NULL;
+               else if (opt->flags & PARSE_OPT_OPTARG && !p->opt)
+                       *(const char **)opt->value = (const char *)opt->defval;
+               else
+                       err = get_arg(p, opt, flags, (const char **)opt->value);
+
+               if (!err)
+                       fix_filename(p->prefix, (const char **)opt->value);
+               return err;
+
        case OPTION_CALLBACK:
                if (unset)
                        return (*opt->callback)(opt, NULL, 1) ? (-1) : 0;
@@ -285,12 +307,14 @@ static void check_typos(const char *arg, const struct option *options)
 }
 
 void parse_options_start(struct parse_opt_ctx_t *ctx,
-                        int argc, const char **argv, int flags)
+                        int argc, const char **argv, const char *prefix,
+                        int flags)
 {
        memset(ctx, 0, sizeof(*ctx));
        ctx->argc = argc - 1;
        ctx->argv = argv + 1;
        ctx->out  = argv;
+       ctx->prefix = prefix;
        ctx->cpidx = ((flags & PARSE_OPT_KEEP_ARGV0) != 0);
        ctx->flags = flags;
        if ((flags & PARSE_OPT_KEEP_UNKNOWN) &&
@@ -389,12 +413,13 @@ int parse_options_end(struct parse_opt_ctx_t *ctx)
        return ctx->cpidx + ctx->argc;
 }
 
-int parse_options(int argc, const char **argv, const struct option *options,
-                 const char * const usagestr[], int flags)
+int parse_options(int argc, const char **argv, const char *prefix,
+                 const struct option *options, const char * const usagestr[],
+                 int flags)
 {
        struct parse_opt_ctx_t ctx;
 
-       parse_options_start(&ctx, argc, argv, flags);
+       parse_options_start(&ctx, argc, argv, prefix, flags);
        switch (parse_options_step(&ctx, options, usagestr)) {
        case PARSE_OPT_HELP:
                exit(129);
@@ -412,6 +437,20 @@ int parse_options(int argc, const char **argv, const struct option *options,
        return parse_options_end(&ctx);
 }
 
+static int usage_argh(const struct option *opts)
+{
+       const char *s;
+       int literal = opts->flags & PARSE_OPT_LITERAL_ARGHELP;
+       if (opts->flags & PARSE_OPT_OPTARG)
+               if (opts->long_name)
+                       s = literal ? "[=%s]" : "[=<%s>]";
+               else
+                       s = literal ? "[%s]" : "[<%s>]";
+       else
+               s = literal ? " %s" : " <%s>";
+       return fprintf(stderr, s, opts->argh);
+}
+
 #define USAGE_OPTS_WIDTH 24
 #define USAGE_GAP         2
 
@@ -477,16 +516,12 @@ int usage_with_options_internal(const char * const *usagestr,
                        if (opts->flags & PARSE_OPT_NOARG)
                                break;
                        /* FALLTHROUGH */
+               case OPTION_FILENAME:
+                       /* FALLTHROUGH */
                case OPTION_STRING:
-                       if (opts->argh) {
-                               if (opts->flags & PARSE_OPT_OPTARG)
-                                       if (opts->long_name)
-                                               pos += fprintf(stderr, "[=<%s>]", opts->argh);
-                                       else
-                                               pos += fprintf(stderr, "[<%s>]", opts->argh);
-                               else
-                                       pos += fprintf(stderr, " <%s>", opts->argh);
-                       } else {
+                       if (opts->argh)
+                               pos += usage_argh(opts);
+                       else {
                                if (opts->flags & PARSE_OPT_OPTARG)
                                        if (opts->long_name)
                                                pos += fprintf(stderr, "[=...]");
@@ -593,15 +628,3 @@ int parse_opt_with_commit(const struct option *opt, const char *arg, int unset)
        commit_list_insert(commit, opt->value);
        return 0;
 }
-
-/*
- * This should really be OPTION_FILENAME type as a part of
- * parse_options that take prefix to do this while parsing.
- */
-extern const char *parse_options_fix_filename(const char *prefix, const char *file)
-{
-       if (!file || !prefix || is_absolute_path(file) || !strcmp("-", file))
-               return file;
-       return prefix_filename(prefix, strlen(prefix), file);
-}
-