Merge branch 'tz/fsf-address-update'
[gitweb.git] / diff.c
diff --git a/diff.c b/diff.c
index e6814b9e9c6d6f49a48fb2d3234323e20dec5f56..0763e89263efac5fe75a57f0c068049fae610851 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -124,18 +124,18 @@ static int parse_dirstat_params(struct diff_options *options, const char *params
        for (i = 0; i < params.nr; i++) {
                const char *p = params.items[i].string;
                if (!strcmp(p, "changes")) {
-                       DIFF_OPT_CLR(options, DIRSTAT_BY_LINE);
-                       DIFF_OPT_CLR(options, DIRSTAT_BY_FILE);
+                       options->flags.dirstat_by_line = 0;
+                       options->flags.dirstat_by_file = 0;
                } else if (!strcmp(p, "lines")) {
-                       DIFF_OPT_SET(options, DIRSTAT_BY_LINE);
-                       DIFF_OPT_CLR(options, DIRSTAT_BY_FILE);
+                       options->flags.dirstat_by_line = 1;
+                       options->flags.dirstat_by_file = 0;
                } else if (!strcmp(p, "files")) {
-                       DIFF_OPT_CLR(options, DIRSTAT_BY_LINE);
-                       DIFF_OPT_SET(options, DIRSTAT_BY_FILE);
+                       options->flags.dirstat_by_line = 0;
+                       options->flags.dirstat_by_file = 1;
                } else if (!strcmp(p, "noncumulative")) {
-                       DIFF_OPT_CLR(options, DIRSTAT_CUMULATIVE);
+                       options->flags.dirstat_cumulative = 0;
                } else if (!strcmp(p, "cumulative")) {
-                       DIFF_OPT_SET(options, DIRSTAT_CUMULATIVE);
+                       options->flags.dirstat_cumulative = 1;
                } else if (isdigit(*p)) {
                        char *end;
                        int permille = strtoul(p, &end, 10) * 10;
@@ -1412,7 +1412,7 @@ static void emit_rewrite_diff(const char *name_a,
        struct emit_callback ecbdata;
        struct strbuf out = STRBUF_INIT;
 
-       if (diff_mnemonic_prefix && DIFF_OPT_TST(o, REVERSE_DIFF)) {
+       if (diff_mnemonic_prefix && o->flags.reverse_diff) {
                a_prefix = o->b_prefix;
                b_prefix = o->a_prefix;
        } else {
@@ -2660,7 +2660,7 @@ static void show_dirstat(struct diff_options *options)
        dir.alloc = 0;
        dir.nr = 0;
        dir.permille = options->dirstat_permille;
-       dir.cumulative = DIFF_OPT_TST(options, DIRSTAT_CUMULATIVE);
+       dir.cumulative = options->flags.dirstat_cumulative;
 
        changed = 0;
        for (i = 0; i < q->nr; i++) {
@@ -2686,7 +2686,7 @@ static void show_dirstat(struct diff_options *options)
                        goto found_damage;
                }
 
-               if (DIFF_OPT_TST(options, DIRSTAT_BY_FILE)) {
+               if (options->flags.dirstat_by_file) {
                        /*
                         * In --dirstat-by-file mode, we don't really need to
                         * look at the actual file contents at all.
@@ -2761,7 +2761,7 @@ static void show_dirstat_by_line(struct diffstat_t *data, struct diff_options *o
        dir.alloc = 0;
        dir.nr = 0;
        dir.permille = options->dirstat_permille;
-       dir.cumulative = DIFF_OPT_TST(options, DIRSTAT_CUMULATIVE);
+       dir.cumulative = options->flags.dirstat_cumulative;
 
        changed = 0;
        for (i = 0; i < data->nr; i++) {
@@ -3048,7 +3048,7 @@ static void builtin_diff(const char *name_a,
        const char *line_prefix = diff_line_prefix(o);
 
        diff_set_mnemonic_prefix(o, "a/", "b/");
-       if (DIFF_OPT_TST(o, REVERSE_DIFF)) {
+       if (o->flags.reverse_diff) {
                a_prefix = o->b_prefix;
                b_prefix = o->a_prefix;
        } else {
@@ -3072,7 +3072,7 @@ static void builtin_diff(const char *name_a,
                return;
        }
 
-       if (DIFF_OPT_TST(o, ALLOW_TEXTCONV)) {
+       if (o->flags.allow_textconv) {
                textconv_one = get_textconv(one);
                textconv_two = get_textconv(two);
        }
@@ -3132,13 +3132,13 @@ static void builtin_diff(const char *name_a,
                                 header.len, 0);
                strbuf_reset(&header);
                goto free_ab_and_return;
-       } else if (!DIFF_OPT_TST(o, TEXT) &&
+       } else if (!o->flags.text &&
            ( (!textconv_one && diff_filespec_is_binary(one)) ||
              (!textconv_two && diff_filespec_is_binary(two)) )) {
                struct strbuf sb = STRBUF_INIT;
                if (!one->data && !two->data &&
                    S_ISREG(one->mode) && S_ISREG(two->mode) &&
-                   !DIFF_OPT_TST(o, BINARY)) {
+                   !o->flags.binary) {
                        if (!oidcmp(&one->oid, &two->oid)) {
                                if (must_show_header)
                                        emit_diff_symbol(o, DIFF_SYMBOL_HEADER,
@@ -3167,7 +3167,7 @@ static void builtin_diff(const char *name_a,
                }
                emit_diff_symbol(o, DIFF_SYMBOL_HEADER, header.buf, header.len, 0);
                strbuf_reset(&header);
-               if (DIFF_OPT_TST(o, BINARY))
+               if (o->flags.binary)
                        emit_binary_diff(o, &mf1, &mf2);
                else {
                        strbuf_addf(&sb, "%sBinary files %s and %s differ\n",
@@ -3213,7 +3213,7 @@ static void builtin_diff(const char *name_a,
                xecfg.ctxlen = o->context;
                xecfg.interhunkctxlen = o->interhunkcontext;
                xecfg.flags = XDL_EMIT_FUNCNAMES;
-               if (DIFF_OPT_TST(o, FUNCCONTEXT))
+               if (o->flags.funccontext)
                        xecfg.flags |= XDL_EMIT_FUNCCONTEXT;
                if (pe)
                        xdiff_set_find_func(&xecfg, pe->pattern, pe->cflags);
@@ -3378,7 +3378,7 @@ static void builtin_checkdiff(const char *name_a, const char *name_b,
        diff_free_filespec_data(one);
        diff_free_filespec_data(two);
        if (data.status)
-               DIFF_OPT_SET(o, CHECK_FAILED);
+               o->flags.check_failed = 1;
 }
 
 struct diff_filespec *alloc_filespec(const char *path)
@@ -3545,14 +3545,12 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags)
                int fd;
 
                if (lstat(s->path, &st) < 0) {
-                       if (errno == ENOENT) {
-                       err_empty:
-                               err = -1;
-                       empty:
-                               s->data = (char *)"";
-                               s->size = 0;
-                               return err;
-                       }
+               err_empty:
+                       err = -1;
+               empty:
+                       s->data = (char *)"";
+                       s->size = 0;
+                       return err;
                }
                s->size = xsize_t(st.st_size);
                if (!s->size)
@@ -3872,9 +3870,9 @@ static void fill_metainfo(struct strbuf *msg,
                *must_show_header = 0;
        }
        if (one && two && oidcmp(&one->oid, &two->oid)) {
-               int abbrev = DIFF_OPT_TST(o, FULL_INDEX) ? 40 : DEFAULT_ABBREV;
+               int abbrev = o->flags.full_index ? 40 : DEFAULT_ABBREV;
 
-               if (DIFF_OPT_TST(o, BINARY)) {
+               if (o->flags.binary) {
                        mmfile_t mf;
                        if ((!fill_mmfile(&mf, one) && diff_filespec_is_binary(one)) ||
                            (!fill_mmfile(&mf, two) && diff_filespec_is_binary(two)))
@@ -3904,7 +3902,7 @@ static void run_diff_cmd(const char *pgm,
        int must_show_header = 0;
 
 
-       if (DIFF_OPT_TST(o, ALLOW_EXTERNAL)) {
+       if (o->flags.allow_external) {
                struct userdiff_driver *drv = userdiff_find_by_path(attr_path);
                if (drv && drv->external)
                        pgm = drv->external;
@@ -3984,7 +3982,7 @@ static void run_diff(struct diff_filepair *p, struct diff_options *o)
        if (o->prefix_length)
                strip_prefix(o->prefix_length, &name, &other);
 
-       if (!DIFF_OPT_TST(o, ALLOW_EXTERNAL))
+       if (!o->flags.allow_external)
                pgm = NULL;
 
        if (DIFF_PAIR_UNMERGED(p)) {
@@ -4083,7 +4081,7 @@ void diff_setup(struct diff_options *options)
        options->context = diff_context_default;
        options->interhunkcontext = diff_interhunk_context_default;
        options->ws_error_highlight = ws_error_highlight_default;
-       DIFF_OPT_SET(options, RENAME_EMPTY);
+       options->flags.rename_empty = 1;
 
        /* pathchange left =NULL by default */
        options->change = diff_change;
@@ -4134,14 +4132,14 @@ void diff_setup_done(struct diff_options *options)
        if (DIFF_XDL_TST(options, IGNORE_WHITESPACE) ||
            DIFF_XDL_TST(options, IGNORE_WHITESPACE_CHANGE) ||
            DIFF_XDL_TST(options, IGNORE_WHITESPACE_AT_EOL))
-               DIFF_OPT_SET(options, DIFF_FROM_CONTENTS);
+               options->flags.diff_from_contents = 1;
        else
-               DIFF_OPT_CLR(options, DIFF_FROM_CONTENTS);
+               options->flags.diff_from_contents = 0;
 
-       if (DIFF_OPT_TST(options, FIND_COPIES_HARDER))
+       if (options->flags.find_copies_harder)
                options->detect_rename = DIFF_DETECT_COPY;
 
-       if (!DIFF_OPT_TST(options, RELATIVE_NAME))
+       if (!options->flags.relative_name)
                options->prefix = NULL;
        if (options->prefix)
                options->prefix_length = strlen(options->prefix);
@@ -4171,18 +4169,18 @@ void diff_setup_done(struct diff_options *options)
                                      DIFF_FORMAT_DIRSTAT |
                                      DIFF_FORMAT_SUMMARY |
                                      DIFF_FORMAT_CHECKDIFF))
-               DIFF_OPT_SET(options, RECURSIVE);
+               options->flags.recursive = 1;
        /*
         * Also pickaxe would not work very well if you do not say recursive
         */
        if (options->pickaxe)
-               DIFF_OPT_SET(options, RECURSIVE);
+               options->flags.recursive = 1;
        /*
         * When patches are generated, submodules diffed against the work tree
         * must be checked for dirtiness too so it can be shown in the output
         */
        if (options->output_format & DIFF_FORMAT_PATCH)
-               DIFF_OPT_SET(options, DIRTY_SUBMODULES);
+               options->flags.dirty_submodules = 1;
 
        if (options->detect_rename && options->rename_limit < 0)
                options->rename_limit = diff_rename_limit_default;
@@ -4204,14 +4202,14 @@ void diff_setup_done(struct diff_options *options)
         * to have found.  It does not make sense not to return with
         * exit code in such a case either.
         */
-       if (DIFF_OPT_TST(options, QUICK)) {
+       if (options->flags.quick) {
                options->output_format = DIFF_FORMAT_NO_OUTPUT;
-               DIFF_OPT_SET(options, EXIT_WITH_STATUS);
+               options->flags.exit_with_status = 1;
        }
 
        options->diff_path_counter = 0;
 
-       if (DIFF_OPT_TST(options, FOLLOW_RENAMES) && options->pathspec.nr != 1)
+       if (options->flags.follow_renames && options->pathspec.nr != 1)
                die(_("--follow requires exactly one pathspec"));
 
        if (!options->use_color || external_diff())
@@ -4561,7 +4559,7 @@ int diff_opt_parse(struct diff_options *options,
        else if (starts_with(arg, "-C") || starts_with(arg, "--find-copies=") ||
                 !strcmp(arg, "--find-copies")) {
                if (options->detect_rename == DIFF_DETECT_COPY)
-                       DIFF_OPT_SET(options, FIND_COPIES_HARDER);
+                       options->flags.find_copies_harder = 1;
                if ((options->rename_score = diff_scoreopt_parse(arg)) == -1)
                        return error("invalid argument to -C: %s", arg+2);
                options->detect_rename = DIFF_DETECT_COPY;
@@ -4569,13 +4567,13 @@ int diff_opt_parse(struct diff_options *options,
        else if (!strcmp(arg, "--no-renames"))
                options->detect_rename = 0;
        else if (!strcmp(arg, "--rename-empty"))
-               DIFF_OPT_SET(options, RENAME_EMPTY);
+               options->flags.rename_empty = 1;
        else if (!strcmp(arg, "--no-rename-empty"))
-               DIFF_OPT_CLR(options, RENAME_EMPTY);
+               options->flags.rename_empty = 0;
        else if (!strcmp(arg, "--relative"))
-               DIFF_OPT_SET(options, RELATIVE_NAME);
+               options->flags.relative_name = 1;
        else if (skip_prefix(arg, "--relative=", &arg)) {
-               DIFF_OPT_SET(options, RELATIVE_NAME);
+               options->flags.relative_name = 1;
                options->prefix = arg;
        }
 
@@ -4615,21 +4613,21 @@ int diff_opt_parse(struct diff_options *options,
        /* flags options */
        else if (!strcmp(arg, "--binary")) {
                enable_patch_output(&options->output_format);
-               DIFF_OPT_SET(options, BINARY);
+               options->flags.binary = 1;
        }
        else if (!strcmp(arg, "--full-index"))
-               DIFF_OPT_SET(options, FULL_INDEX);
+               options->flags.full_index = 1;
        else if (!strcmp(arg, "-a") || !strcmp(arg, "--text"))
-               DIFF_OPT_SET(options, TEXT);
+               options->flags.text = 1;
        else if (!strcmp(arg, "-R"))
-               DIFF_OPT_SET(options, REVERSE_DIFF);
+               options->flags.reverse_diff = 1;
        else if (!strcmp(arg, "--find-copies-harder"))
-               DIFF_OPT_SET(options, FIND_COPIES_HARDER);
+               options->flags.find_copies_harder = 1;
        else if (!strcmp(arg, "--follow"))
-               DIFF_OPT_SET(options, FOLLOW_RENAMES);
+               options->flags.follow_renames = 1;
        else if (!strcmp(arg, "--no-follow")) {
-               DIFF_OPT_CLR(options, FOLLOW_RENAMES);
-               DIFF_OPT_CLR(options, DEFAULT_FOLLOW_RENAMES);
+               options->flags.follow_renames = 0;
+               options->flags.default_follow_renames = 0;
        } else if (!strcmp(arg, "--color"))
                options->use_color = 1;
        else if (skip_prefix(arg, "--color=", &arg)) {
@@ -4686,22 +4684,23 @@ int diff_opt_parse(struct diff_options *options,
                return argcount;
        }
        else if (!strcmp(arg, "--exit-code"))
-               DIFF_OPT_SET(options, EXIT_WITH_STATUS);
+               options->flags.exit_with_status = 1;
        else if (!strcmp(arg, "--quiet"))
-               DIFF_OPT_SET(options, QUICK);
+               options->flags.quick = 1;
        else if (!strcmp(arg, "--ext-diff"))
-               DIFF_OPT_SET(options, ALLOW_EXTERNAL);
+               options->flags.allow_external = 1;
        else if (!strcmp(arg, "--no-ext-diff"))
-               DIFF_OPT_CLR(options, ALLOW_EXTERNAL);
-       else if (!strcmp(arg, "--textconv"))
-               DIFF_OPT_SET(options, ALLOW_TEXTCONV);
-       else if (!strcmp(arg, "--no-textconv"))
-               DIFF_OPT_CLR(options, ALLOW_TEXTCONV);
+               options->flags.allow_external = 0;
+       else if (!strcmp(arg, "--textconv")) {
+               options->flags.allow_textconv = 1;
+               options->flags.textconv_set_via_cmdline = 1;
+       } else if (!strcmp(arg, "--no-textconv"))
+               options->flags.allow_textconv = 0;
        else if (!strcmp(arg, "--ignore-submodules")) {
-               DIFF_OPT_SET(options, OVERRIDE_SUBMODULE_CONFIG);
+               options->flags.override_submodule_config = 1;
                handle_ignore_submodules_arg(options, "all");
        } else if (skip_prefix(arg, "--ignore-submodules=", &arg)) {
-               DIFF_OPT_SET(options, OVERRIDE_SUBMODULE_CONFIG);
+               options->flags.override_submodule_config = 1;
                handle_ignore_submodules_arg(options, arg);
        } else if (!strcmp(arg, "--submodule"))
                options->submodule_format = DIFF_SUBMODULE_LOG;
@@ -4776,11 +4775,11 @@ int diff_opt_parse(struct diff_options *options,
                         &options->interhunkcontext))
                ;
        else if (!strcmp(arg, "-W"))
-               DIFF_OPT_SET(options, FUNCCONTEXT);
+               options->flags.funccontext = 1;
        else if (!strcmp(arg, "--function-context"))
-               DIFF_OPT_SET(options, FUNCCONTEXT);
+               options->flags.funccontext = 1;
        else if (!strcmp(arg, "--no-function-context"))
-               DIFF_OPT_CLR(options, FUNCCONTEXT);
+               options->flags.funccontext = 0;
        else if ((argcount = parse_long_opt("output", av, &optarg))) {
                char *path = prefix_filename(prefix, optarg);
                options->file = xfopen(path, "w");
@@ -5530,7 +5529,7 @@ void diff_flush(struct diff_options *options)
                separator++;
        }
 
-       if (output_format & DIFF_FORMAT_DIRSTAT && DIFF_OPT_TST(options, DIRSTAT_BY_LINE))
+       if (output_format & DIFF_FORMAT_DIRSTAT && options->flags.dirstat_by_line)
                dirstat_by_line = 1;
 
        if (output_format & (DIFF_FORMAT_DIFFSTAT|DIFF_FORMAT_SHORTSTAT|DIFF_FORMAT_NUMSTAT) ||
@@ -5565,8 +5564,8 @@ void diff_flush(struct diff_options *options)
        }
 
        if (output_format & DIFF_FORMAT_NO_OUTPUT &&
-           DIFF_OPT_TST(options, EXIT_WITH_STATUS) &&
-           DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) {
+           options->flags.exit_with_status &&
+           options->flags.diff_from_contents) {
                /*
                 * run diff_flush_patch for the exit status. setting
                 * options->file to /dev/null should be safe, because we
@@ -5614,11 +5613,11 @@ void diff_flush(struct diff_options *options)
         * diff_addremove/diff_change does not set the bit when
         * DIFF_FROM_CONTENTS is in effect (e.g. with -w).
         */
-       if (DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) {
+       if (options->flags.diff_from_contents) {
                if (options->found_changes)
-                       DIFF_OPT_SET(options, HAS_CHANGES);
+                       options->flags.has_changes = 1;
                else
-                       DIFF_OPT_CLR(options, HAS_CHANGES);
+                       options->flags.has_changes = 0;
        }
 }
 
@@ -5738,7 +5737,7 @@ static void diffcore_skip_stat_unmatch(struct diff_options *diffopt)
                         * to determine how many paths were dirty only
                         * due to stat info mismatch.
                         */
-                       if (!DIFF_OPT_TST(diffopt, NO_INDEX))
+                       if (!diffopt->flags.no_index)
                                diffopt->skip_stat_unmatch++;
                        diff_free_filepair(p);
                }
@@ -5787,10 +5786,10 @@ void diffcore_std(struct diff_options *options)
                diff_resolve_rename_copy();
        diffcore_apply_filter(options);
 
-       if (diff_queued_diff.nr && !DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
-               DIFF_OPT_SET(options, HAS_CHANGES);
+       if (diff_queued_diff.nr && !options->flags.diff_from_contents)
+               options->flags.has_changes = 1;
        else
-               DIFF_OPT_CLR(options, HAS_CHANGES);
+               options->flags.has_changes = 0;
 
        options->found_follow = 0;
 }
@@ -5802,23 +5801,23 @@ int diff_result_code(struct diff_options *opt, int status)
        diff_warn_rename_limit("diff.renameLimit",
                               opt->needed_rename_limit,
                               opt->degraded_cc_to_c);
-       if (!DIFF_OPT_TST(opt, EXIT_WITH_STATUS) &&
+       if (!opt->flags.exit_with_status &&
            !(opt->output_format & DIFF_FORMAT_CHECKDIFF))
                return status;
-       if (DIFF_OPT_TST(opt, EXIT_WITH_STATUS) &&
-           DIFF_OPT_TST(opt, HAS_CHANGES))
+       if (opt->flags.exit_with_status &&
+           opt->flags.has_changes)
                result |= 01;
        if ((opt->output_format & DIFF_FORMAT_CHECKDIFF) &&
-           DIFF_OPT_TST(opt, CHECK_FAILED))
+           opt->flags.check_failed)
                result |= 02;
        return result;
 }
 
 int diff_can_quit_early(struct diff_options *opt)
 {
-       return (DIFF_OPT_TST(opt, QUICK) &&
+       return (opt->flags.quick &&
                !opt->filter &&
-               DIFF_OPT_TST(opt, HAS_CHANGES));
+               opt->flags.has_changes);
 }
 
 /*
@@ -5830,10 +5829,10 @@ int diff_can_quit_early(struct diff_options *opt)
 static int is_submodule_ignored(const char *path, struct diff_options *options)
 {
        int ignored = 0;
-       unsigned orig_flags = options->flags;
-       if (!DIFF_OPT_TST(options, OVERRIDE_SUBMODULE_CONFIG))
+       struct diff_flags orig_flags = options->flags;
+       if (!options->flags.override_submodule_config)
                set_diffopt_flags_from_submodule_config(options, path);
-       if (DIFF_OPT_TST(options, IGNORE_SUBMODULES))
+       if (options->flags.ignore_submodules)
                ignored = 1;
        options->flags = orig_flags;
        return ignored;
@@ -5862,7 +5861,7 @@ void diff_addremove(struct diff_options *options,
         * Before the final output happens, they are pruned after
         * merged into rename/copy pairs as appropriate.
         */
-       if (DIFF_OPT_TST(options, REVERSE_DIFF))
+       if (options->flags.reverse_diff)
                addremove = (addremove == '+' ? '-' :
                             addremove == '-' ? '+' : addremove);
 
@@ -5881,8 +5880,8 @@ void diff_addremove(struct diff_options *options,
        }
 
        diff_queue(&diff_queued_diff, one, two);
-       if (!DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
-               DIFF_OPT_SET(options, HAS_CHANGES);
+       if (!options->flags.diff_from_contents)
+               options->flags.has_changes = 1;
 }
 
 void diff_change(struct diff_options *options,
@@ -5900,7 +5899,7 @@ void diff_change(struct diff_options *options,
            is_submodule_ignored(concatpath, options))
                return;
 
-       if (DIFF_OPT_TST(options, REVERSE_DIFF)) {
+       if (options->flags.reverse_diff) {
                SWAP(old_mode, new_mode);
                SWAP(old_oid, new_oid);
                SWAP(old_oid_valid, new_oid_valid);
@@ -5919,14 +5918,14 @@ void diff_change(struct diff_options *options,
        two->dirty_submodule = new_dirty_submodule;
        p = diff_queue(&diff_queued_diff, one, two);
 
-       if (DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
+       if (options->flags.diff_from_contents)
                return;
 
-       if (DIFF_OPT_TST(options, QUICK) && options->skip_stat_unmatch &&
+       if (options->flags.quick && options->skip_stat_unmatch &&
            !diff_filespec_check_stat_unmatch(p))
                return;
 
-       DIFF_OPT_SET(options, HAS_CHANGES);
+       options->flags.has_changes = 1;
 }
 
 struct diff_filepair *diff_unmerge(struct diff_options *options, const char *path)
@@ -6064,7 +6063,7 @@ void setup_diff_pager(struct diff_options *opt)
         * and because it is easy to find people oneline advising "git diff
         * --exit-code" in hooks and other scripts, we do not do so.
         */
-       if (!DIFF_OPT_TST(opt, EXIT_WITH_STATUS) &&
+       if (!opt->flags.exit_with_status &&
            check_pager_config("diff") != 0)
                setup_pager();
 }