Merge branch 'rs/diff-cleanup-records-fix' into maint
[gitweb.git] / diff.c
diff --git a/diff.c b/diff.c
index 9038f190ece061696a3290acf8f1e9951e9d0a6c..977ca7125b9acc603ce6c1d27c57a75c9d21fbdf 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -137,7 +137,7 @@ static int git_config_rename(const char *var, const char *value)
 int git_diff_ui_config(const char *var, const char *value, void *cb)
 {
        if (!strcmp(var, "diff.color") || !strcmp(var, "color.diff")) {
-               diff_use_color_default = git_config_colorbool(var, value, -1);
+               diff_use_color_default = git_config_colorbool(var, value);
                return 0;
        }
        if (!strcmp(var, "diff.renames")) {
@@ -164,6 +164,9 @@ int git_diff_ui_config(const char *var, const char *value, void *cb)
        if (!strcmp(var, "diff.ignoresubmodules"))
                handle_ignore_submodules_arg(&default_diff_options, value);
 
+       if (git_color_config(var, value, cb) < 0)
+               return -1;
+
        return git_diff_basic_config(var, value, cb);
 }
 
@@ -212,7 +215,7 @@ int git_diff_basic_config(const char *var, const char *value, void *cb)
        if (!prefixcmp(var, "submodule."))
                return parse_submodule_config_option(var, value);
 
-       return git_color_default_config(var, value, cb);
+       return git_default_config(var, value, cb);
 }
 
 static char *quote_two(const char *one, const char *two)
@@ -583,11 +586,10 @@ static void emit_rewrite_diff(const char *name_a,
                              struct diff_options *o)
 {
        int lc_a, lc_b;
-       int color_diff = DIFF_OPT_TST(o, COLOR_DIFF);
        const char *name_a_tab, *name_b_tab;
-       const char *metainfo = diff_get_color(color_diff, DIFF_METAINFO);
-       const char *fraginfo = diff_get_color(color_diff, DIFF_FRAGINFO);
-       const char *reset = diff_get_color(color_diff, DIFF_RESET);
+       const char *metainfo = diff_get_color(o->use_color, DIFF_METAINFO);
+       const char *fraginfo = diff_get_color(o->use_color, DIFF_FRAGINFO);
+       const char *reset = diff_get_color(o->use_color, DIFF_RESET);
        static struct strbuf a_name = STRBUF_INIT, b_name = STRBUF_INIT;
        const char *a_prefix, *b_prefix;
        char *data_one, *data_two;
@@ -623,7 +625,7 @@ static void emit_rewrite_diff(const char *name_a,
        size_two = fill_textconv(textconv_two, two, &data_two);
 
        memset(&ecbdata, 0, sizeof(ecbdata));
-       ecbdata.color_diff = color_diff;
+       ecbdata.color_diff = want_color(o->use_color);
        ecbdata.found_changesp = &o->found_changes;
        ecbdata.ws_rule = whitespace_rule(name_b ? name_b : name_a);
        ecbdata.opt = o;
@@ -1004,7 +1006,7 @@ static void free_diff_words_data(struct emit_callback *ecbdata)
 
 const char *diff_get_color(int diff_use_color, enum color_diff ix)
 {
-       if (diff_use_color)
+       if (want_color(diff_use_color))
                return diff_colors[ix];
        return "";
 }
@@ -1316,9 +1318,10 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
        int i, len, add, del, adds = 0, dels = 0;
        uintmax_t max_change = 0, max_len = 0;
        int total_files = data->nr;
-       int width, name_width;
+       int width, name_width, count;
        const char *reset, *add_c, *del_c;
        const char *line_prefix = "";
+       int extra_shown = 0;
        struct strbuf *msg = NULL;
 
        if (data->nr == 0)
@@ -1331,6 +1334,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
 
        width = options->stat_width ? options->stat_width : 80;
        name_width = options->stat_name_width ? options->stat_name_width : 50;
+       count = options->stat_count ? options->stat_count : data->nr;
 
        /* Sanity: give at least 5 columns to the graph,
         * but leave at least 10 columns for the name.
@@ -1347,9 +1351,14 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
        add_c = diff_get_color_opt(options, DIFF_FILE_NEW);
        del_c = diff_get_color_opt(options, DIFF_FILE_OLD);
 
-       for (i = 0; i < data->nr; i++) {
+       for (i = 0; (i < count) && (i < data->nr); i++) {
                struct diffstat_file *file = data->files[i];
                uintmax_t change = file->added + file->deleted;
+               if (!data->files[i]->is_renamed &&
+                        (change == 0)) {
+                       count++; /* not shown == room for one more */
+                       continue;
+               }
                fill_print_name(file);
                len = strlen(file->print_name);
                if (max_len < len)
@@ -1360,6 +1369,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
                if (max_change < change)
                        max_change = change;
        }
+       count = i; /* min(count, data->nr) */
 
        /* Compute the width of the graph part;
         * 10 is for one blank at the beginning of the line plus
@@ -1374,13 +1384,18 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
        else
                width = max_change;
 
-       for (i = 0; i < data->nr; i++) {
+       for (i = 0; i < count; i++) {
                const char *prefix = "";
                char *name = data->files[i]->print_name;
                uintmax_t added = data->files[i]->added;
                uintmax_t deleted = data->files[i]->deleted;
                int name_len;
 
+               if (!data->files[i]->is_renamed &&
+                        (added + deleted == 0)) {
+                       total_files--;
+                       continue;
+               }
                /*
                 * "scale" the filename
                 */
@@ -1415,11 +1430,6 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
                        fprintf(options->file, "  Unmerged\n");
                        continue;
                }
-               else if (!data->files[i]->is_renamed &&
-                        (added + deleted == 0)) {
-                       total_files--;
-                       continue;
-               }
 
                /*
                 * scale the add/delete
@@ -1441,6 +1451,20 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
                show_graph(options->file, '-', del, del_c, reset);
                fprintf(options->file, "\n");
        }
+       for (i = count; i < data->nr; i++) {
+               uintmax_t added = data->files[i]->added;
+               uintmax_t deleted = data->files[i]->deleted;
+               if (!data->files[i]->is_renamed &&
+                        (added + deleted == 0)) {
+                       total_files--;
+                       continue;
+               }
+               adds += added;
+               dels += deleted;
+               if (!extra_shown)
+                       fprintf(options->file, "%s ...\n", line_prefix);
+               extra_shown = 1;
+       }
        fprintf(options->file, "%s", line_prefix);
        fprintf(options->file,
               " %d files changed, %d insertions(+), %d deletions(-)\n",
@@ -1786,11 +1810,10 @@ static int is_conflict_marker(const char *line, int marker_size, unsigned long l
 static void checkdiff_consume(void *priv, char *line, unsigned long len)
 {
        struct checkdiff_t *data = priv;
-       int color_diff = DIFF_OPT_TST(data->o, COLOR_DIFF);
        int marker_size = data->conflict_marker_size;
-       const char *ws = diff_get_color(color_diff, DIFF_WHITESPACE);
-       const char *reset = diff_get_color(color_diff, DIFF_RESET);
-       const char *set = diff_get_color(color_diff, DIFF_FILE_NEW);
+       const char *ws = diff_get_color(data->o->use_color, DIFF_WHITESPACE);
+       const char *reset = diff_get_color(data->o->use_color, DIFF_RESET);
+       const char *set = diff_get_color(data->o->use_color, DIFF_FILE_NEW);
        char *err;
        char *line_prefix = "";
        struct strbuf *msgbuf;
@@ -2135,7 +2158,7 @@ static void builtin_diff(const char *name_a,
                memset(&xecfg, 0, sizeof(xecfg));
                memset(&ecbdata, 0, sizeof(ecbdata));
                ecbdata.label_path = lbl;
-               ecbdata.color_diff = DIFF_OPT_TST(o, COLOR_DIFF);
+               ecbdata.color_diff = want_color(o->use_color);
                ecbdata.found_changesp = &o->found_changes;
                ecbdata.ws_rule = whitespace_rule(name_b ? name_b : name_a);
                if (ecbdata.ws_rule & WS_BLANK_AT_EOF)
@@ -2183,7 +2206,7 @@ static void builtin_diff(const char *name_a,
                                        break;
                                }
                        }
-                       if (DIFF_OPT_TST(o, COLOR_DIFF)) {
+                       if (want_color(o->use_color)) {
                                struct diff_words_style *st = ecbdata.diff_words->style;
                                st->old.color = diff_get_color_opt(o, DIFF_FILE_OLD);
                                st->new.color = diff_get_color_opt(o, DIFF_FILE_NEW);
@@ -2833,7 +2856,7 @@ static void run_diff_cmd(const char *pgm,
                 */
                fill_metainfo(msg, name, other, one, two, o, p,
                              &must_show_header,
-                             DIFF_OPT_TST(o, COLOR_DIFF) && !pgm);
+                             want_color(o->use_color) && !pgm);
                xfrm_msg = msg->len ? msg->buf : NULL;
        }
 
@@ -2999,8 +3022,7 @@ void diff_setup(struct diff_options *options)
 
        options->change = diff_change;
        options->add_remove = diff_addremove;
-       if (diff_use_color_default > 0)
-               DIFF_OPT_SET(options, COLOR_DIFF);
+       options->use_color = diff_use_color_default;
        options->detect_rename = diff_detect_rename_default;
 
        if (diff_no_prefix) {
@@ -3208,6 +3230,7 @@ static int stat_opt(struct diff_options *options, const char **av)
        char *end;
        int width = options->stat_width;
        int name_width = options->stat_name_width;
+       int count = options->stat_count;
        int argcount = 1;
 
        arg += strlen("--stat");
@@ -3235,12 +3258,24 @@ static int stat_opt(struct diff_options *options, const char **av)
                                name_width = strtoul(av[1], &end, 10);
                                argcount = 2;
                        }
+               } else if (!prefixcmp(arg, "-count")) {
+                       arg += strlen("-count");
+                       if (*arg == '=')
+                               count = strtoul(arg + 1, &end, 10);
+                       else if (!*arg && !av[1])
+                               die("Option '--stat-count' requires a value");
+                       else if (!*arg) {
+                               count = strtoul(av[1], &end, 10);
+                               argcount = 2;
+                       }
                }
                break;
        case '=':
                width = strtoul(arg+1, &end, 10);
                if (*end == ',')
                        name_width = strtoul(end+1, &end, 10);
+               if (*end == ',')
+                       count = strtoul(end+1, &end, 10);
        }
 
        /* Important! This checks all the error cases! */
@@ -3249,6 +3284,7 @@ static int stat_opt(struct diff_options *options, const char **av)
        options->output_format |= DIFF_FORMAT_DIFFSTAT;
        options->stat_name_width = name_width;
        options->stat_width = width;
+       options->stat_count = count;
        return argcount;
 }
 
@@ -3313,7 +3349,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
        else if (!strcmp(arg, "-s"))
                options->output_format |= DIFF_FORMAT_NO_OUTPUT;
        else if (!prefixcmp(arg, "--stat"))
-               /* --stat, --stat-width, or --stat-name-width */
+               /* --stat, --stat-width, --stat-name-width, or --stat-count */
                return stat_opt(options, av);
 
        /* renames options */
@@ -3349,6 +3385,10 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
        }
 
        /* xdiff options */
+       else if (!strcmp(arg, "--minimal"))
+               DIFF_XDL_SET(options, NEED_MINIMAL);
+       else if (!strcmp(arg, "--no-minimal"))
+               DIFF_XDL_CLR(options, NEED_MINIMAL);
        else if (!strcmp(arg, "-w") || !strcmp(arg, "--ignore-all-space"))
                DIFF_XDL_SET(options, IGNORE_WHITESPACE);
        else if (!strcmp(arg, "-b") || !strcmp(arg, "--ignore-space-change"))
@@ -3357,6 +3397,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
                DIFF_XDL_SET(options, IGNORE_WHITESPACE_AT_EOL);
        else if (!strcmp(arg, "--patience"))
                DIFF_XDL_SET(options, PATIENCE_DIFF);
+       else if (!strcmp(arg, "--histogram"))
+               DIFF_XDL_SET(options, HISTOGRAM_DIFF);
 
        /* flags options */
        else if (!strcmp(arg, "--binary")) {
@@ -3374,24 +3416,21 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
        else if (!strcmp(arg, "--follow"))
                DIFF_OPT_SET(options, FOLLOW_RENAMES);
        else if (!strcmp(arg, "--color"))
-               DIFF_OPT_SET(options, COLOR_DIFF);
+               options->use_color = 1;
        else if (!prefixcmp(arg, "--color=")) {
-               int value = git_config_colorbool(NULL, arg+8, -1);
-               if (value == 0)
-                       DIFF_OPT_CLR(options, COLOR_DIFF);
-               else if (value > 0)
-                       DIFF_OPT_SET(options, COLOR_DIFF);
-               else
+               int value = git_config_colorbool(NULL, arg+8);
+               if (value < 0)
                        return error("option `color' expects \"always\", \"auto\", or \"never\"");
+               options->use_color = value;
        }
        else if (!strcmp(arg, "--no-color"))
-               DIFF_OPT_CLR(options, COLOR_DIFF);
+               options->use_color = 0;
        else if (!strcmp(arg, "--color-words")) {
-               DIFF_OPT_SET(options, COLOR_DIFF);
+               options->use_color = 1;
                options->word_diff = DIFF_WORDS_COLOR;
        }
        else if (!prefixcmp(arg, "--color-words=")) {
-               DIFF_OPT_SET(options, COLOR_DIFF);
+               options->use_color = 1;
                options->word_diff = DIFF_WORDS_COLOR;
                options->word_regex = arg + 14;
        }
@@ -3404,7 +3443,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
                if (!strcmp(type, "plain"))
                        options->word_diff = DIFF_WORDS_PLAIN;
                else if (!strcmp(type, "color")) {
-                       DIFF_OPT_SET(options, COLOR_DIFF);
+                       options->use_color = 1;
                        options->word_diff = DIFF_WORDS_COLOR;
                }
                else if (!strcmp(type, "porcelain"))