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-rw-r--r--diff.c184
1 files changed, 122 insertions, 62 deletions
diff --git a/diff.c b/diff.c
index 32142dba64..348f71b462 100644
--- a/diff.c
+++ b/diff.c
@@ -15,6 +15,7 @@
#include "sigchain.h"
#include "submodule.h"
#include "ll-merge.h"
+#include "string-list.h"
#ifdef NO_FAST_WORKING_DIRECTORY
#define FAST_WORKING_DIRECTORY 0
@@ -25,7 +26,8 @@
static int diff_detect_rename_default;
static int diff_rename_limit_default = 400;
static int diff_suppress_blank_empty;
-int diff_use_color_default = -1;
+static int diff_use_color_default = -1;
+static int diff_context_default = 3;
static const char *diff_word_regex_cfg;
static const char *external_diff_cmd_cfg;
int diff_auto_refresh_index = 1;
@@ -68,26 +70,30 @@ static int parse_diff_color_slot(const char *var, int ofs)
return -1;
}
-static int parse_dirstat_params(struct diff_options *options, const char *params,
+static int parse_dirstat_params(struct diff_options *options, const char *params_string,
struct strbuf *errmsg)
{
- const char *p = params;
- int p_len, ret = 0;
+ char *params_copy = xstrdup(params_string);
+ struct string_list params = STRING_LIST_INIT_NODUP;
+ int ret = 0;
+ int i;
- while (*p) {
- p_len = strchrnul(p, ',') - p;
- if (!memcmp(p, "changes", p_len)) {
+ if (*params_copy)
+ string_list_split_in_place(&params, params_copy, ',', -1);
+ 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);
- } else if (!memcmp(p, "lines", p_len)) {
+ } else if (!strcmp(p, "lines")) {
DIFF_OPT_SET(options, DIRSTAT_BY_LINE);
DIFF_OPT_CLR(options, DIRSTAT_BY_FILE);
- } else if (!memcmp(p, "files", p_len)) {
+ } else if (!strcmp(p, "files")) {
DIFF_OPT_CLR(options, DIRSTAT_BY_LINE);
DIFF_OPT_SET(options, DIRSTAT_BY_FILE);
- } else if (!memcmp(p, "noncumulative", p_len)) {
+ } else if (!strcmp(p, "noncumulative")) {
DIFF_OPT_CLR(options, DIRSTAT_CUMULATIVE);
- } else if (!memcmp(p, "cumulative", p_len)) {
+ } else if (!strcmp(p, "cumulative")) {
DIFF_OPT_SET(options, DIRSTAT_CUMULATIVE);
} else if (isdigit(*p)) {
char *end;
@@ -99,27 +105,35 @@ static int parse_dirstat_params(struct diff_options *options, const char *params
while (isdigit(*++end))
; /* nothing */
}
- if (end - p == p_len)
+ if (!*end)
options->dirstat_permille = permille;
else {
- strbuf_addf(errmsg, _(" Failed to parse dirstat cut-off percentage '%.*s'\n"),
- p_len, p);
+ strbuf_addf(errmsg, _(" Failed to parse dirstat cut-off percentage '%s'\n"),
+ p);
ret++;
}
} else {
- strbuf_addf(errmsg, _(" Unknown dirstat parameter '%.*s'\n"),
- p_len, p);
+ strbuf_addf(errmsg, _(" Unknown dirstat parameter '%s'\n"), p);
ret++;
}
- p += p_len;
-
- if (*p)
- p++; /* more parameters, swallow separator */
}
+ string_list_clear(&params, 0);
+ free(params_copy);
return ret;
}
+static int parse_submodule_params(struct diff_options *options, const char *value)
+{
+ if (!strcmp(value, "log"))
+ DIFF_OPT_SET(options, SUBMODULE_LOG);
+ else if (!strcmp(value, "short"))
+ DIFF_OPT_CLR(options, SUBMODULE_LOG);
+ else
+ return -1;
+ return 0;
+}
+
static int git_config_rename(const char *var, const char *value)
{
if (!value)
@@ -141,6 +155,12 @@ int git_diff_ui_config(const char *var, const char *value, void *cb)
diff_use_color_default = git_config_colorbool(var, value);
return 0;
}
+ if (!strcmp(var, "diff.context")) {
+ diff_context_default = git_config_int(var, value);
+ if (diff_context_default < 0)
+ return -1;
+ return 0;
+ }
if (!strcmp(var, "diff.renames")) {
diff_detect_rename_default = git_config_rename(var, value);
return 0;
@@ -169,6 +189,13 @@ 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 (!strcmp(var, "diff.submodule")) {
+ if (parse_submodule_params(&default_diff_options, value))
+ warning(_("Unknown value for 'diff.submodule' config variable: '%s'"),
+ value);
+ return 0;
+ }
+
if (git_color_config(var, value, cb) < 0)
return -1;
@@ -1300,6 +1327,7 @@ struct diffstat_t {
unsigned is_unmerged:1;
unsigned is_binary:1;
unsigned is_renamed:1;
+ unsigned is_interesting:1;
uintmax_t added, deleted;
} **files;
};
@@ -1469,8 +1497,8 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
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)) {
+
+ if (!file->is_interesting && (change == 0)) {
count++; /* not shown == room for one more */
continue;
}
@@ -1497,7 +1525,7 @@ 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) */
+ count = i; /* where we can stop scanning in data->files[] */
/*
* We have width = stat_width or term_columns() columns total.
@@ -1585,16 +1613,15 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
*/
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;
+ struct diffstat_file *file = data->files[i];
+ char *name = file->print_name;
+ uintmax_t added = file->added;
+ uintmax_t deleted = file->deleted;
int name_len;
- if (!data->files[i]->is_renamed &&
- (added + deleted == 0)) {
- total_files--;
+ if (!file->is_interesting && (added + deleted == 0))
continue;
- }
+
/*
* "scale" the filename
*/
@@ -1610,7 +1637,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
name = slash;
}
- if (data->files[i]->is_binary) {
+ if (file->is_binary) {
fprintf(options->file, "%s", line_prefix);
show_name(options->file, prefix, name, len);
fprintf(options->file, " %*s", number_width, "Bin");
@@ -1627,7 +1654,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
fprintf(options->file, "\n");
continue;
}
- else if (data->files[i]->is_unmerged) {
+ else if (file->is_unmerged) {
fprintf(options->file, "%s", line_prefix);
show_name(options->file, prefix, name, len);
fprintf(options->file, " Unmerged\n");
@@ -1639,8 +1666,6 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
*/
add = added;
del = deleted;
- adds += add;
- dels += del;
if (graph_width <= max_change) {
int total = add + del;
@@ -1666,16 +1691,24 @@ 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)) {
+
+ for (i = 0; i < data->nr; i++) {
+ struct diffstat_file *file = data->files[i];
+ uintmax_t added = file->added;
+ uintmax_t deleted = file->deleted;
+
+ if (file->is_unmerged ||
+ (!file->is_interesting && (added + deleted == 0))) {
total_files--;
continue;
}
- adds += added;
- dels += deleted;
+
+ if (!file->is_binary) {
+ adds += added;
+ dels += deleted;
+ }
+ if (i < count)
+ continue;
if (!extra_shown)
fprintf(options->file, "%s ...\n", line_prefix);
extra_shown = 1;
@@ -1695,9 +1728,8 @@ static void show_shortstats(struct diffstat_t *data, struct diff_options *option
int added = data->files[i]->added;
int deleted= data->files[i]->deleted;
- if (data->files[i]->is_unmerged)
- continue;
- if (!data->files[i]->is_renamed && (added + deleted == 0)) {
+ if (data->files[i]->is_unmerged ||
+ (!data->files[i]->is_interesting && (added + deleted == 0))) {
total_files--;
} else if (!data->files[i]->is_binary) { /* don't count bytes */
adds += added;
@@ -2213,7 +2245,7 @@ static void builtin_diff(const char *name_a,
mmfile_t mf1, mf2;
const char *lbl[2];
char *a_one, *b_two;
- const char *set = diff_get_color_opt(o, DIFF_METAINFO);
+ const char *meta = diff_get_color_opt(o, DIFF_METAINFO);
const char *reset = diff_get_color_opt(o, DIFF_RESET);
const char *a_prefix, *b_prefix;
struct userdiff_driver *textconv_one = NULL;
@@ -2234,7 +2266,7 @@ static void builtin_diff(const char *name_a,
const char *add = diff_get_color_opt(o, DIFF_FILE_NEW);
show_submodule_summary(o->file, one ? one->path : two->path,
one->sha1, two->sha1, two->dirty_submodule,
- del, add, reset);
+ meta, del, add, reset);
return;
}
@@ -2260,24 +2292,24 @@ static void builtin_diff(const char *name_a,
b_two = quote_two(b_prefix, name_b + (*name_b == '/'));
lbl[0] = DIFF_FILE_VALID(one) ? a_one : "/dev/null";
lbl[1] = DIFF_FILE_VALID(two) ? b_two : "/dev/null";
- strbuf_addf(&header, "%s%sdiff --git %s %s%s\n", line_prefix, set, a_one, b_two, reset);
+ strbuf_addf(&header, "%s%sdiff --git %s %s%s\n", line_prefix, meta, a_one, b_two, reset);
if (lbl[0][0] == '/') {
/* /dev/null */
- strbuf_addf(&header, "%s%snew file mode %06o%s\n", line_prefix, set, two->mode, reset);
+ strbuf_addf(&header, "%s%snew file mode %06o%s\n", line_prefix, meta, two->mode, reset);
if (xfrm_msg)
strbuf_addstr(&header, xfrm_msg);
must_show_header = 1;
}
else if (lbl[1][0] == '/') {
- strbuf_addf(&header, "%s%sdeleted file mode %06o%s\n", line_prefix, set, one->mode, reset);
+ strbuf_addf(&header, "%s%sdeleted file mode %06o%s\n", line_prefix, meta, one->mode, reset);
if (xfrm_msg)
strbuf_addstr(&header, xfrm_msg);
must_show_header = 1;
}
else {
if (one->mode != two->mode) {
- strbuf_addf(&header, "%s%sold mode %06o%s\n", line_prefix, set, one->mode, reset);
- strbuf_addf(&header, "%s%snew mode %06o%s\n", line_prefix, set, two->mode, reset);
+ strbuf_addf(&header, "%s%sold mode %06o%s\n", line_prefix, meta, one->mode, reset);
+ strbuf_addf(&header, "%s%snew mode %06o%s\n", line_prefix, meta, two->mode, reset);
must_show_header = 1;
}
if (xfrm_msg)
@@ -2397,13 +2429,20 @@ static void builtin_diffstat(const char *name_a, const char *name_b,
struct diff_filespec *two,
struct diffstat_t *diffstat,
struct diff_options *o,
- int complete_rewrite)
+ struct diff_filepair *p)
{
mmfile_t mf1, mf2;
struct diffstat_file *data;
int same_contents;
+ int complete_rewrite = 0;
+
+ if (!DIFF_PAIR_UNMERGED(p)) {
+ if (p->status == DIFF_STATUS_MODIFIED && p->score)
+ complete_rewrite = 1;
+ }
data = diffstat_add(diffstat, name_a, name_b);
+ data->is_interesting = p->status != DIFF_STATUS_UNKNOWN;
if (!one || !two) {
data->is_unmerged = 1;
@@ -3114,11 +3153,10 @@ static void run_diffstat(struct diff_filepair *p, struct diff_options *o,
{
const char *name;
const char *other;
- int complete_rewrite = 0;
if (DIFF_PAIR_UNMERGED(p)) {
/* unmerged */
- builtin_diffstat(p->one->path, NULL, NULL, NULL, diffstat, o, 0);
+ builtin_diffstat(p->one->path, NULL, NULL, NULL, diffstat, o, p);
return;
}
@@ -3131,9 +3169,7 @@ static void run_diffstat(struct diff_filepair *p, struct diff_options *o,
diff_fill_sha1_info(p->one);
diff_fill_sha1_info(p->two);
- if (p->status == DIFF_STATUS_MODIFIED && p->score)
- complete_rewrite = 1;
- builtin_diffstat(name, other, p->one, p->two, diffstat, o, complete_rewrite);
+ builtin_diffstat(name, other, p->one, p->two, diffstat, o, p);
}
static void run_checkdiff(struct diff_filepair *p, struct diff_options *o)
@@ -3170,7 +3206,7 @@ void diff_setup(struct diff_options *options)
options->break_opt = -1;
options->rename_limit = -1;
options->dirstat_permille = diff_dirstat_permille_default;
- options->context = 3;
+ options->context = diff_context_default;
DIFF_OPT_SET(options, RENAME_EMPTY);
options->change = diff_change;
@@ -3466,6 +3502,14 @@ static int parse_dirstat_opt(struct diff_options *options, const char *params)
return 1;
}
+static int parse_submodule_opt(struct diff_options *options, const char *value)
+{
+ if (parse_submodule_params(options, value))
+ die(_("Failed to parse --submodule option parameter: '%s'"),
+ value);
+ return 1;
+}
+
int diff_opt_parse(struct diff_options *options, const char **av, int ac)
{
const char *arg = av[0];
@@ -3582,6 +3626,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
DIFF_OPT_SET(options, FIND_COPIES_HARDER);
else if (!strcmp(arg, "--follow"))
DIFF_OPT_SET(options, FOLLOW_RENAMES);
+ else if (!strcmp(arg, "--no-follow"))
+ DIFF_OPT_CLR(options, FOLLOW_RENAMES);
else if (!strcmp(arg, "--color"))
options->use_color = 1;
else if (!prefixcmp(arg, "--color=")) {
@@ -3646,10 +3692,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
handle_ignore_submodules_arg(options, arg + 20);
} else if (!strcmp(arg, "--submodule"))
DIFF_OPT_SET(options, SUBMODULE_LOG);
- else if (!prefixcmp(arg, "--submodule=")) {
- if (!strcmp(arg + 12, "log"))
- DIFF_OPT_SET(options, SUBMODULE_LOG);
- }
+ else if (!prefixcmp(arg, "--submodule="))
+ return parse_submodule_opt(options, arg + 12);
/* misc options */
else if (!strcmp(arg, "-z"))
@@ -4871,3 +4915,19 @@ size_t fill_textconv(struct userdiff_driver *driver,
return size;
}
+
+void setup_diff_pager(struct diff_options *opt)
+{
+ /*
+ * If the user asked for our exit code, then either they want --quiet
+ * or --exit-code. We should definitely not bother with a pager in the
+ * former case, as we will generate no output. Since we still properly
+ * report our exit code even when a pager is run, we _could_ run a
+ * pager with --exit-code. But since we have not done so historically,
+ * 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) &&
+ check_pager_config("diff") != 0)
+ setup_pager();
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-30 03:03:51 +0000