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-rw-r--r--diff.c525
1 files changed, 325 insertions, 200 deletions
diff --git a/diff.c b/diff.c
index 732d4c2275..e8006666d8 100644
--- a/diff.c
+++ b/diff.c
@@ -30,12 +30,14 @@ 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;
+static const char *diff_order_file_cfg;
int diff_auto_refresh_index = 1;
static int diff_mnemonic_prefix;
static int diff_no_prefix;
static int diff_stat_graph_width;
static int diff_dirstat_permille_default = 30;
static struct diff_options default_diff_options;
+static long diff_algorithm;
static char diff_colors[][COLOR_MAXLEN] = {
GIT_COLOR_RESET,
@@ -143,6 +145,21 @@ static int git_config_rename(const char *var, const char *value)
return git_config_bool(var,value) ? DIFF_DETECT_RENAME : 0;
}
+long parse_algorithm_value(const char *value)
+{
+ if (!value)
+ return -1;
+ else if (!strcasecmp(value, "myers") || !strcasecmp(value, "default"))
+ return 0;
+ else if (!strcasecmp(value, "minimal"))
+ return XDF_NEED_MINIMAL;
+ else if (!strcasecmp(value, "patience"))
+ return XDF_PATIENCE_DIFF;
+ else if (!strcasecmp(value, "histogram"))
+ return XDF_HISTOGRAM_DIFF;
+ return -1;
+}
+
/*
* These are to give UI layer defaults.
* The core-level commands such as git-diff-files should
@@ -185,6 +202,8 @@ int git_diff_ui_config(const char *var, const char *value, void *cb)
return git_config_string(&external_diff_cmd_cfg, var, value);
if (!strcmp(var, "diff.wordregex"))
return git_config_string(&diff_word_regex_cfg, var, value);
+ if (!strcmp(var, "diff.orderfile"))
+ return git_config_pathname(&diff_order_file_cfg, var, value);
if (!strcmp(var, "diff.ignoresubmodules"))
handle_ignore_submodules_arg(&default_diff_options, value);
@@ -196,6 +215,13 @@ int git_diff_ui_config(const char *var, const char *value, void *cb)
return 0;
}
+ if (!strcmp(var, "diff.algorithm")) {
+ diff_algorithm = parse_algorithm_value(value);
+ if (diff_algorithm < 0)
+ return -1;
+ return 0;
+ }
+
if (git_color_config(var, value, cb) < 0)
return -1;
@@ -212,7 +238,7 @@ int git_diff_basic_config(const char *var, const char *value, void *cb)
if (userdiff_config(var, value) < 0)
return -1;
- if (!prefixcmp(var, "diff.color.") || !prefixcmp(var, "color.diff.")) {
+ if (starts_with(var, "diff.color.") || starts_with(var, "color.diff.")) {
int slot = parse_diff_color_slot(var, 11);
if (slot < 0)
return 0;
@@ -241,7 +267,7 @@ int git_diff_basic_config(const char *var, const char *value, void *cb)
return 0;
}
- if (!prefixcmp(var, "submodule."))
+ if (starts_with(var, "submodule."))
return parse_submodule_config_option(var, value);
return git_default_config(var, value, cb);
@@ -402,12 +428,7 @@ static void emit_line_0(struct diff_options *o, const char *set, const char *res
int nofirst;
FILE *file = o->file;
- if (o->output_prefix) {
- struct strbuf *msg = NULL;
- msg = o->output_prefix(o, o->output_prefix_data);
- assert(msg);
- fwrite(msg->buf, msg->len, 1, file);
- }
+ fputs(diff_line_prefix(o), file);
if (len == 0) {
has_trailing_newline = (first == '\n');
@@ -625,13 +646,7 @@ static void emit_rewrite_diff(const char *name_a,
char *data_one, *data_two;
size_t size_one, size_two;
struct emit_callback ecbdata;
- char *line_prefix = "";
- struct strbuf *msgbuf;
-
- if (o && o->output_prefix) {
- msgbuf = o->output_prefix(o, o->output_prefix_data);
- line_prefix = msgbuf->buf;
- }
+ const char *line_prefix = diff_line_prefix(o);
if (diff_mnemonic_prefix && DIFF_OPT_TST(o, REVERSE_DIFF)) {
a_prefix = o->b_prefix;
@@ -657,7 +672,7 @@ static void emit_rewrite_diff(const char *name_a,
memset(&ecbdata, 0, sizeof(ecbdata));
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.ws_rule = whitespace_rule(name_b);
ecbdata.opt = o;
if (ecbdata.ws_rule & WS_BLANK_AT_EOF) {
mmfile_t mf1, mf2;
@@ -827,18 +842,14 @@ static void fn_out_diff_words_aux(void *priv, char *line, unsigned long len)
int minus_first, minus_len, plus_first, plus_len;
const char *minus_begin, *minus_end, *plus_begin, *plus_end;
struct diff_options *opt = diff_words->opt;
- struct strbuf *msgbuf;
- char *line_prefix = "";
+ const char *line_prefix;
if (line[0] != '@' || parse_hunk_header(line, len,
&minus_first, &minus_len, &plus_first, &plus_len))
return;
assert(opt);
- if (opt->output_prefix) {
- msgbuf = opt->output_prefix(opt, opt->output_prefix_data);
- line_prefix = msgbuf->buf;
- }
+ line_prefix = diff_line_prefix(opt);
/* POSIX requires that first be decremented by one if len == 0... */
if (minus_len) {
@@ -962,14 +973,10 @@ static void diff_words_show(struct diff_words_data *diff_words)
struct diff_words_style *style = diff_words->style;
struct diff_options *opt = diff_words->opt;
- struct strbuf *msgbuf;
- char *line_prefix = "";
+ const char *line_prefix;
assert(opt);
- if (opt->output_prefix) {
- msgbuf = opt->output_prefix(opt, opt->output_prefix_data);
- line_prefix = msgbuf->buf;
- }
+ line_prefix = diff_line_prefix(opt);
/* special case: only removal */
if (!diff_words->plus.text.size) {
@@ -1105,6 +1112,16 @@ const char *diff_get_color(int diff_use_color, enum color_diff ix)
return "";
}
+const char *diff_line_prefix(struct diff_options *opt)
+{
+ struct strbuf *msgbuf;
+ if (!opt->output_prefix)
+ return "";
+
+ msgbuf = opt->output_prefix(opt, opt->output_prefix_data);
+ return msgbuf->buf;
+}
+
static unsigned long sane_truncate_line(struct emit_callback *ecb, char *line, unsigned long len)
{
const char *cp;
@@ -1145,13 +1162,7 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
const char *plain = diff_get_color(ecbdata->color_diff, DIFF_PLAIN);
const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET);
struct diff_options *o = ecbdata->opt;
- char *line_prefix = "";
- struct strbuf *msgbuf;
-
- if (o && o->output_prefix) {
- msgbuf = o->output_prefix(o, o->output_prefix_data);
- line_prefix = msgbuf->buf;
- }
+ const char *line_prefix = diff_line_prefix(o);
if (ecbdata->header) {
fprintf(ecbdata->opt->file, "%s", ecbdata->header->buf);
@@ -1207,7 +1218,7 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
diff_words_append(line, len,
&ecbdata->diff_words->plus);
return;
- } else if (!prefixcmp(line, "\\ ")) {
+ } else if (starts_with(line, "\\ ")) {
/*
* Eat the "no newline at eof" marker as if we
* saw a "+" or "-" line with nothing on it,
@@ -1256,6 +1267,7 @@ static char *pprint_rename(const char *a, const char *b)
const char *new = b;
struct strbuf name = STRBUF_INIT;
int pfx_length, sfx_length;
+ int pfx_adjust_for_slash;
int len_a = strlen(a);
int len_b = strlen(b);
int a_midlen, b_midlen;
@@ -1282,7 +1294,18 @@ static char *pprint_rename(const char *a, const char *b)
old = a + len_a;
new = b + len_b;
sfx_length = 0;
- while (a <= old && b <= new && *old == *new) {
+ /*
+ * If there is a common prefix, it must end in a slash. In
+ * that case we let this loop run 1 into the prefix to see the
+ * same slash.
+ *
+ * If there is no common prefix, we cannot do this as it would
+ * underrun the input strings.
+ */
+ pfx_adjust_for_slash = (pfx_length ? 1 : 0);
+ while (a + pfx_length - pfx_adjust_for_slash <= old &&
+ b + pfx_length - pfx_adjust_for_slash <= new &&
+ *old == *new) {
if (*old == '/')
sfx_length = len_a - (old - a);
old--;
@@ -1475,16 +1498,11 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
const char *reset, *add_c, *del_c;
const char *line_prefix = "";
int extra_shown = 0;
- struct strbuf *msg = NULL;
if (data->nr == 0)
return;
- if (options->output_prefix) {
- msg = options->output_prefix(options, options->output_prefix_data);
- line_prefix = msg->buf;
- }
-
+ line_prefix = diff_line_prefix(options);
count = options->stat_count ? options->stat_count : data->nr;
reset = diff_get_color_opt(options, DIFF_RESET);
@@ -1550,7 +1568,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
* Binary files are displayed with "Bin XXX -> YYY bytes"
* instead of the change count and graph. This part is treated
* similarly to the graph part, except that it is not
- * "scaled". If total width is too small to accomodate the
+ * "scaled". If total width is too small to accommodate the
* guaranteed minimum width of the filename part and the
* separators and this message, this message will "overflow"
* making the line longer than the maximum width.
@@ -1668,9 +1686,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options)
del = deleted;
if (graph_width <= max_change) {
- int total = add + del;
-
- total = scale_linear(add + del, graph_width, max_change);
+ int total = scale_linear(add + del, graph_width, max_change);
if (total < 2 && add && del)
/* width >= 2 due to the sanity check */
total = 2;
@@ -1736,12 +1752,7 @@ static void show_shortstats(struct diffstat_t *data, struct diff_options *option
dels += deleted;
}
}
- if (options->output_prefix) {
- struct strbuf *msg = NULL;
- msg = options->output_prefix(options,
- options->output_prefix_data);
- fprintf(options->file, "%s", msg->buf);
- }
+ fprintf(options->file, "%s", diff_line_prefix(options));
print_stat_summary(options->file, total_files, adds, dels);
}
@@ -1755,12 +1766,7 @@ static void show_numstat(struct diffstat_t *data, struct diff_options *options)
for (i = 0; i < data->nr; i++) {
struct diffstat_file *file = data->files[i];
- if (options->output_prefix) {
- struct strbuf *msg = NULL;
- msg = options->output_prefix(options,
- options->output_prefix_data);
- fprintf(options->file, "%s", msg->buf);
- }
+ fprintf(options->file, "%s", diff_line_prefix(options));
if (file->is_binary)
fprintf(options->file, "-\t-\t");
@@ -1802,13 +1808,7 @@ static long gather_dirstat(struct diff_options *opt, struct dirstat_dir *dir,
{
unsigned long this_dir = 0;
unsigned int sources = 0;
- const char *line_prefix = "";
- struct strbuf *msg = NULL;
-
- if (opt->output_prefix) {
- msg = opt->output_prefix(opt, opt->output_prefix_data);
- line_prefix = msg->buf;
- }
+ const char *line_prefix = diff_line_prefix(opt);
while (dir->nr) {
struct dirstat_file *f = dir->files;
@@ -2058,15 +2058,10 @@ static void checkdiff_consume(void *priv, char *line, unsigned long len)
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;
+ const char *line_prefix;
assert(data->o);
- if (data->o->output_prefix) {
- msgbuf = data->o->output_prefix(data->o,
- data->o->output_prefix_data);
- line_prefix = msgbuf->buf;
- }
+ line_prefix = diff_line_prefix(data->o);
if (line[0] == '+') {
unsigned bad;
@@ -2123,7 +2118,8 @@ static unsigned char *deflate_it(char *data,
return deflated;
}
-static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two, char *prefix)
+static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two,
+ const char *prefix)
{
void *cp;
void *delta;
@@ -2184,7 +2180,8 @@ static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two, char
free(data);
}
-static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two, char *prefix)
+static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two,
+ const char *prefix)
{
fprintf(file, "%sGIT binary patch\n", prefix);
emit_binary_diff_body(file, one, two, prefix);
@@ -2251,20 +2248,15 @@ static void builtin_diff(const char *name_a,
struct userdiff_driver *textconv_one = NULL;
struct userdiff_driver *textconv_two = NULL;
struct strbuf header = STRBUF_INIT;
- struct strbuf *msgbuf;
- char *line_prefix = "";
-
- if (o->output_prefix) {
- msgbuf = o->output_prefix(o, o->output_prefix_data);
- line_prefix = msgbuf->buf;
- }
+ const char *line_prefix = diff_line_prefix(o);
if (DIFF_OPT_TST(o, SUBMODULE_LOG) &&
(!one->mode || S_ISGITLINK(one->mode)) &&
(!two->mode || S_ISGITLINK(two->mode))) {
const char *del = diff_get_color_opt(o, DIFF_FILE_OLD);
const char *add = diff_get_color_opt(o, DIFF_FILE_NEW);
- show_submodule_summary(o->file, one ? one->path : two->path,
+ show_submodule_summary(o->file, one->path ? one->path : two->path,
+ line_prefix,
one->sha1, two->sha1, two->dirty_submodule,
meta, del, add, reset);
return;
@@ -2383,7 +2375,7 @@ static void builtin_diff(const char *name_a,
ecbdata.label_path = lbl;
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.ws_rule = whitespace_rule(name_b);
if (ecbdata.ws_rule & WS_BLANK_AT_EOF)
check_blank_at_eof(&mf1, &mf2, &ecbdata);
ecbdata.opt = o;
@@ -2398,9 +2390,9 @@ static void builtin_diff(const char *name_a,
xdiff_set_find_func(&xecfg, pe->pattern, pe->cflags);
if (!diffopts)
;
- else if (!prefixcmp(diffopts, "--unified="))
+ else if (starts_with(diffopts, "--unified="))
xecfg.ctxlen = strtoul(diffopts + 10, NULL, 10);
- else if (!prefixcmp(diffopts, "-u"))
+ else if (starts_with(diffopts, "-u"))
xecfg.ctxlen = strtoul(diffopts + 2, NULL, 10);
if (o->word_diff)
init_diff_words_data(&ecbdata, o, one, two);
@@ -2595,7 +2587,7 @@ void fill_filespec(struct diff_filespec *spec, const unsigned char *sha1,
*/
static int reuse_worktree_file(const char *name, const unsigned char *sha1, int want_file)
{
- struct cache_entry *ce;
+ const struct cache_entry *ce;
struct stat st;
int pos, len;
@@ -2686,6 +2678,14 @@ static int diff_populate_gitlink(struct diff_filespec *s, int size_only)
int diff_populate_filespec(struct diff_filespec *s, int size_only)
{
int err = 0;
+ /*
+ * demote FAIL to WARN to allow inspecting the situation
+ * instead of refusing.
+ */
+ enum safe_crlf crlf_warn = (safe_crlf == SAFE_CRLF_FAIL
+ ? SAFE_CRLF_WARN
+ : safe_crlf);
+
if (!DIFF_FILE_VALID(s))
die("internal error: asking to populate invalid file.");
if (S_ISDIR(s->mode))
@@ -2741,7 +2741,7 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only)
/*
* Convert from working tree format to canonical git format
*/
- if (convert_to_git(s->path, s->data, s->size, &buf, safe_crlf)) {
+ if (convert_to_git(s->path, s->data, s->size, &buf, crlf_warn)) {
size_t size = 0;
munmap(s->data, s->size);
s->should_munmap = 0;
@@ -2902,11 +2902,16 @@ static void run_external_diff(const char *pgm,
struct diff_filespec *one,
struct diff_filespec *two,
const char *xfrm_msg,
- int complete_rewrite)
+ int complete_rewrite,
+ struct diff_options *o)
{
const char *spawn_arg[10];
int retval;
const char **arg = &spawn_arg[0];
+ struct diff_queue_struct *q = &diff_queued_diff;
+ const char *env[3] = { NULL };
+ char env_counter[50];
+ char env_total[50];
if (one && two) {
struct diff_tempfile *temp_one, *temp_two;
@@ -2931,7 +2936,14 @@ static void run_external_diff(const char *pgm,
}
*arg = NULL;
fflush(NULL);
- retval = run_command_v_opt(spawn_arg, RUN_USING_SHELL);
+
+ env[0] = env_counter;
+ snprintf(env_counter, sizeof(env_counter), "GIT_DIFF_PATH_COUNTER=%d",
+ ++o->diff_path_counter);
+ env[1] = env_total;
+ snprintf(env_total, sizeof(env_total), "GIT_DIFF_PATH_TOTAL=%d", q->nr);
+
+ retval = run_command_v_opt_cd_env(spawn_arg, RUN_USING_SHELL, NULL, env);
remove_tempfile();
if (retval) {
fprintf(stderr, "external diff died, stopping at %s.\n", name);
@@ -2956,14 +2968,9 @@ static void fill_metainfo(struct strbuf *msg,
{
const char *set = diff_get_color(use_color, DIFF_METAINFO);
const char *reset = diff_get_color(use_color, DIFF_RESET);
- struct strbuf *msgbuf;
- char *line_prefix = "";
+ const char *line_prefix = diff_line_prefix(o);
*must_show_header = 1;
- if (o->output_prefix) {
- msgbuf = o->output_prefix(o, o->output_prefix_data);
- line_prefix = msgbuf->buf;
- }
strbuf_init(msg, PATH_MAX * 2 + 300);
switch (p->status) {
case DIFF_STATUS_COPIED:
@@ -3050,7 +3057,7 @@ static void run_diff_cmd(const char *pgm,
if (pgm) {
run_external_diff(pgm, name, other, one, two, xfrm_msg,
- complete_rewrite);
+ complete_rewrite, o);
return;
}
if (one && two)
@@ -3213,6 +3220,9 @@ void diff_setup(struct diff_options *options)
options->add_remove = diff_addremove;
options->use_color = diff_use_color_default;
options->detect_rename = diff_detect_rename_default;
+ options->xdl_opts |= diff_algorithm;
+
+ options->orderfile = diff_order_file_cfg;
if (diff_no_prefix) {
options->a_prefix = options->b_prefix = "";
@@ -3226,6 +3236,9 @@ void diff_setup_done(struct diff_options *options)
{
int count = 0;
+ if (options->set_default)
+ options->set_default(options);
+
if (options->output_format & DIFF_FORMAT_NAME)
count++;
if (options->output_format & DIFF_FORMAT_NAME_STATUS)
@@ -3321,6 +3334,8 @@ void diff_setup_done(struct diff_options *options)
options->output_format = DIFF_FORMAT_NO_OUTPUT;
DIFF_OPT_SET(options, EXIT_WITH_STATUS);
}
+
+ options->diff_path_counter = 0;
}
static int opt_arg(const char *arg, int arg_short, const char *arg_long, int *val)
@@ -3395,10 +3410,10 @@ int parse_long_opt(const char *opt, const char **argv,
if (arg[0] != '-' || arg[1] != '-')
return 0;
arg += strlen("--");
- if (prefixcmp(arg, opt))
+ if (!starts_with(arg, opt))
return 0;
arg += strlen(opt);
- if (*arg == '=') { /* sticked form: --option=value */
+ if (*arg == '=') { /* stuck form: --option=value */
*optarg = arg + 1;
return 1;
}
@@ -3426,7 +3441,7 @@ static int stat_opt(struct diff_options *options, const char **av)
switch (*arg) {
case '-':
- if (!prefixcmp(arg, "-width")) {
+ if (starts_with(arg, "-width")) {
arg += strlen("-width");
if (*arg == '=')
width = strtoul(arg + 1, &end, 10);
@@ -3436,7 +3451,7 @@ static int stat_opt(struct diff_options *options, const char **av)
width = strtoul(av[1], &end, 10);
argcount = 2;
}
- } else if (!prefixcmp(arg, "-name-width")) {
+ } else if (starts_with(arg, "-name-width")) {
arg += strlen("-name-width");
if (*arg == '=')
name_width = strtoul(arg + 1, &end, 10);
@@ -3446,7 +3461,7 @@ static int stat_opt(struct diff_options *options, const char **av)
name_width = strtoul(av[1], &end, 10);
argcount = 2;
}
- } else if (!prefixcmp(arg, "-graph-width")) {
+ } else if (starts_with(arg, "-graph-width")) {
arg += strlen("-graph-width");
if (*arg == '=')
graph_width = strtoul(arg + 1, &end, 10);
@@ -3456,7 +3471,7 @@ static int stat_opt(struct diff_options *options, const char **av)
graph_width = strtoul(av[1], &end, 10);
argcount = 2;
}
- } else if (!prefixcmp(arg, "-count")) {
+ } else if (starts_with(arg, "-count")) {
arg += strlen("-count");
if (*arg == '=')
count = strtoul(arg + 1, &end, 10);
@@ -3510,6 +3525,93 @@ static int parse_submodule_opt(struct diff_options *options, const char *value)
return 1;
}
+static const char diff_status_letters[] = {
+ DIFF_STATUS_ADDED,
+ DIFF_STATUS_COPIED,
+ DIFF_STATUS_DELETED,
+ DIFF_STATUS_MODIFIED,
+ DIFF_STATUS_RENAMED,
+ DIFF_STATUS_TYPE_CHANGED,
+ DIFF_STATUS_UNKNOWN,
+ DIFF_STATUS_UNMERGED,
+ DIFF_STATUS_FILTER_AON,
+ DIFF_STATUS_FILTER_BROKEN,
+ '\0',
+};
+
+static unsigned int filter_bit['Z' + 1];
+
+static void prepare_filter_bits(void)
+{
+ int i;
+
+ if (!filter_bit[DIFF_STATUS_ADDED]) {
+ for (i = 0; diff_status_letters[i]; i++)
+ filter_bit[(int) diff_status_letters[i]] = (1 << i);
+ }
+}
+
+static unsigned filter_bit_tst(char status, const struct diff_options *opt)
+{
+ return opt->filter & filter_bit[(int) status];
+}
+
+static int parse_diff_filter_opt(const char *optarg, struct diff_options *opt)
+{
+ int i, optch;
+
+ prepare_filter_bits();
+
+ /*
+ * If there is a negation e.g. 'd' in the input, and we haven't
+ * initialized the filter field with another --diff-filter, start
+ * from full set of bits, except for AON.
+ */
+ if (!opt->filter) {
+ for (i = 0; (optch = optarg[i]) != '\0'; i++) {
+ if (optch < 'a' || 'z' < optch)
+ continue;
+ opt->filter = (1 << (ARRAY_SIZE(diff_status_letters) - 1)) - 1;
+ opt->filter &= ~filter_bit[DIFF_STATUS_FILTER_AON];
+ break;
+ }
+ }
+
+ for (i = 0; (optch = optarg[i]) != '\0'; i++) {
+ unsigned int bit;
+ int negate;
+
+ if ('a' <= optch && optch <= 'z') {
+ negate = 1;
+ optch = toupper(optch);
+ } else {
+ negate = 0;
+ }
+
+ bit = (0 <= optch && optch <= 'Z') ? filter_bit[optch] : 0;
+ if (!bit)
+ return optarg[i];
+ if (negate)
+ opt->filter &= ~bit;
+ else
+ opt->filter |= bit;
+ }
+ return 0;
+}
+
+/* Used only by "diff-files" and "diff --no-index" */
+void handle_deprecated_show_diff_q(struct diff_options *opt)
+{
+ warning("'diff -q' and 'diff-files -q' are deprecated.");
+ warning("Use 'diff --diff-filter=d' instead to ignore deleted filepairs.");
+ parse_diff_filter_opt("d", opt);
+}
+
+static void enable_patch_output(int *fmt) {
+ *fmt &= ~DIFF_FORMAT_NO_OUTPUT;
+ *fmt |= DIFF_FORMAT_PATCH;
+}
+
int diff_opt_parse(struct diff_options *options, const char **av, int ac)
{
const char *arg = av[0];
@@ -3517,29 +3619,29 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
int argcount;
/* Output format options */
- if (!strcmp(arg, "-p") || !strcmp(arg, "-u") || !strcmp(arg, "--patch"))
- options->output_format |= DIFF_FORMAT_PATCH;
- else if (opt_arg(arg, 'U', "unified", &options->context))
- options->output_format |= DIFF_FORMAT_PATCH;
+ if (!strcmp(arg, "-p") || !strcmp(arg, "-u") || !strcmp(arg, "--patch")
+ || opt_arg(arg, 'U', "unified", &options->context))
+ enable_patch_output(&options->output_format);
else if (!strcmp(arg, "--raw"))
options->output_format |= DIFF_FORMAT_RAW;
- else if (!strcmp(arg, "--patch-with-raw"))
- options->output_format |= DIFF_FORMAT_PATCH | DIFF_FORMAT_RAW;
- else if (!strcmp(arg, "--numstat"))
+ else if (!strcmp(arg, "--patch-with-raw")) {
+ enable_patch_output(&options->output_format);
+ options->output_format |= DIFF_FORMAT_RAW;
+ } else if (!strcmp(arg, "--numstat"))
options->output_format |= DIFF_FORMAT_NUMSTAT;
else if (!strcmp(arg, "--shortstat"))
options->output_format |= DIFF_FORMAT_SHORTSTAT;
else if (!strcmp(arg, "-X") || !strcmp(arg, "--dirstat"))
return parse_dirstat_opt(options, "");
- else if (!prefixcmp(arg, "-X"))
+ else if (starts_with(arg, "-X"))
return parse_dirstat_opt(options, arg + 2);
- else if (!prefixcmp(arg, "--dirstat="))
+ else if (starts_with(arg, "--dirstat="))
return parse_dirstat_opt(options, arg + 10);
else if (!strcmp(arg, "--cumulative"))
return parse_dirstat_opt(options, "cumulative");
else if (!strcmp(arg, "--dirstat-by-file"))
return parse_dirstat_opt(options, "files");
- else if (!prefixcmp(arg, "--dirstat-by-file=")) {
+ else if (starts_with(arg, "--dirstat-by-file=")) {
parse_dirstat_opt(options, "files");
return parse_dirstat_opt(options, arg + 18);
}
@@ -3547,25 +3649,26 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
options->output_format |= DIFF_FORMAT_CHECKDIFF;
else if (!strcmp(arg, "--summary"))
options->output_format |= DIFF_FORMAT_SUMMARY;
- else if (!strcmp(arg, "--patch-with-stat"))
- options->output_format |= DIFF_FORMAT_PATCH | DIFF_FORMAT_DIFFSTAT;
- else if (!strcmp(arg, "--name-only"))
+ else if (!strcmp(arg, "--patch-with-stat")) {
+ enable_patch_output(&options->output_format);
+ options->output_format |= DIFF_FORMAT_DIFFSTAT;
+ } else if (!strcmp(arg, "--name-only"))
options->output_format |= DIFF_FORMAT_NAME;
else if (!strcmp(arg, "--name-status"))
options->output_format |= DIFF_FORMAT_NAME_STATUS;
- else if (!strcmp(arg, "-s"))
+ else if (!strcmp(arg, "-s") || !strcmp(arg, "--no-patch"))
options->output_format |= DIFF_FORMAT_NO_OUTPUT;
- else if (!prefixcmp(arg, "--stat"))
+ else if (starts_with(arg, "--stat"))
/* --stat, --stat-width, --stat-name-width, or --stat-count */
return stat_opt(options, av);
/* renames options */
- else if (!prefixcmp(arg, "-B") || !prefixcmp(arg, "--break-rewrites=") ||
+ else if (starts_with(arg, "-B") || starts_with(arg, "--break-rewrites=") ||
!strcmp(arg, "--break-rewrites")) {
if ((options->break_opt = diff_scoreopt_parse(arg)) == -1)
return error("invalid argument to -B: %s", arg+2);
}
- else if (!prefixcmp(arg, "-M") || !prefixcmp(arg, "--find-renames=") ||
+ else if (starts_with(arg, "-M") || starts_with(arg, "--find-renames=") ||
!strcmp(arg, "--find-renames")) {
if ((options->rename_score = diff_scoreopt_parse(arg)) == -1)
return error("invalid argument to -M: %s", arg+2);
@@ -3574,7 +3677,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
else if (!strcmp(arg, "-D") || !strcmp(arg, "--irreversible-delete")) {
options->irreversible_delete = 1;
}
- else if (!prefixcmp(arg, "-C") || !prefixcmp(arg, "--find-copies=") ||
+ 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);
@@ -3590,7 +3693,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
DIFF_OPT_CLR(options, RENAME_EMPTY);
else if (!strcmp(arg, "--relative"))
DIFF_OPT_SET(options, RELATIVE_NAME);
- else if (!prefixcmp(arg, "--relative=")) {
+ else if (starts_with(arg, "--relative=")) {
DIFF_OPT_SET(options, RELATIVE_NAME);
options->prefix = arg + 11;
}
@@ -3606,14 +3709,27 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
DIFF_XDL_SET(options, IGNORE_WHITESPACE_CHANGE);
else if (!strcmp(arg, "--ignore-space-at-eol"))
DIFF_XDL_SET(options, IGNORE_WHITESPACE_AT_EOL);
+ else if (!strcmp(arg, "--ignore-blank-lines"))
+ DIFF_XDL_SET(options, IGNORE_BLANK_LINES);
else if (!strcmp(arg, "--patience"))
options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF);
else if (!strcmp(arg, "--histogram"))
options->xdl_opts = DIFF_WITH_ALG(options, HISTOGRAM_DIFF);
+ else if ((argcount = parse_long_opt("diff-algorithm", av, &optarg))) {
+ long value = parse_algorithm_value(optarg);
+ if (value < 0)
+ return error("option diff-algorithm accepts \"myers\", "
+ "\"minimal\", \"patience\" and \"histogram\"");
+ /* clear out previous settings */
+ DIFF_XDL_CLR(options, NEED_MINIMAL);
+ options->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK;
+ options->xdl_opts |= value;
+ return argcount;
+ }
/* flags options */
else if (!strcmp(arg, "--binary")) {
- options->output_format |= DIFF_FORMAT_PATCH;
+ enable_patch_output(&options->output_format);
DIFF_OPT_SET(options, BINARY);
}
else if (!strcmp(arg, "--full-index"))
@@ -3626,9 +3742,11 @@ 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=")) {
+ else if (starts_with(arg, "--color=")) {
int value = git_config_colorbool(NULL, arg+8);
if (value < 0)
return error("option `color' expects \"always\", \"auto\", or \"never\"");
@@ -3640,7 +3758,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
options->use_color = 1;
options->word_diff = DIFF_WORDS_COLOR;
}
- else if (!prefixcmp(arg, "--color-words=")) {
+ else if (starts_with(arg, "--color-words=")) {
options->use_color = 1;
options->word_diff = DIFF_WORDS_COLOR;
options->word_regex = arg + 14;
@@ -3649,7 +3767,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
if (options->word_diff == DIFF_WORDS_NONE)
options->word_diff = DIFF_WORDS_PLAIN;
}
- else if (!prefixcmp(arg, "--word-diff=")) {
+ else if (starts_with(arg, "--word-diff=")) {
const char *type = arg + 12;
if (!strcmp(type, "plain"))
options->word_diff = DIFF_WORDS_PLAIN;
@@ -3685,12 +3803,12 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
else if (!strcmp(arg, "--ignore-submodules")) {
DIFF_OPT_SET(options, OVERRIDE_SUBMODULE_CONFIG);
handle_ignore_submodules_arg(options, "all");
- } else if (!prefixcmp(arg, "--ignore-submodules=")) {
+ } else if (starts_with(arg, "--ignore-submodules=")) {
DIFF_OPT_SET(options, OVERRIDE_SUBMODULE_CONFIG);
handle_ignore_submodules_arg(options, arg + 20);
} else if (!strcmp(arg, "--submodule"))
DIFF_OPT_SET(options, SUBMODULE_LOG);
- else if (!prefixcmp(arg, "--submodule="))
+ else if (starts_with(arg, "--submodule="))
return parse_submodule_opt(options, arg + 12);
/* misc options */
@@ -3718,12 +3836,15 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
return argcount;
}
else if ((argcount = parse_long_opt("diff-filter", av, &optarg))) {
- options->filter = optarg;
+ int offending = parse_diff_filter_opt(optarg, options);
+ if (offending)
+ die("unknown change class '%c' in --diff-filter=%s",
+ offending, optarg);
return argcount;
}
else if (!strcmp(arg, "--abbrev"))
options->abbrev = DEFAULT_ABBREV;
- else if (!prefixcmp(arg, "--abbrev=")) {
+ else if (starts_with(arg, "--abbrev=")) {
options->abbrev = strtoul(arg + 9, NULL, 10);
if (options->abbrev < MINIMUM_ABBREV)
options->abbrev = MINIMUM_ABBREV;
@@ -3805,15 +3926,15 @@ static int diff_scoreopt_parse(const char *opt)
cmd = *opt++;
if (cmd == '-') {
/* convert the long-form arguments into short-form versions */
- if (!prefixcmp(opt, "break-rewrites")) {
+ if (starts_with(opt, "break-rewrites")) {
opt += strlen("break-rewrites");
if (*opt == 0 || *opt++ == '=')
cmd = 'B';
- } else if (!prefixcmp(opt, "find-copies")) {
+ } else if (starts_with(opt, "find-copies")) {
opt += strlen("find-copies");
if (*opt == 0 || *opt++ == '=')
cmd = 'C';
- } else if (!prefixcmp(opt, "find-renames")) {
+ } else if (starts_with(opt, "find-renames")) {
opt += strlen("find-renames");
if (*opt == 0 || *opt++ == '=')
cmd = 'M';
@@ -3898,12 +4019,8 @@ static void diff_flush_raw(struct diff_filepair *p, struct diff_options *opt)
{
int line_termination = opt->line_termination;
int inter_name_termination = line_termination ? '\t' : '\0';
- if (opt->output_prefix) {
- struct strbuf *msg = NULL;
- msg = opt->output_prefix(opt, opt->output_prefix_data);
- fprintf(opt->file, "%s", msg->buf);
- }
+ fprintf(opt->file, "%s", diff_line_prefix(opt));
if (!(opt->output_format & DIFF_FORMAT_NAME_STATUS)) {
fprintf(opt->file, ":%06o %06o %s ", p->one->mode, p->two->mode,
diff_unique_abbrev(p->one->sha1, opt->abbrev));
@@ -4022,9 +4139,9 @@ void diff_debug_filespec(struct diff_filespec *s, int x, const char *one)
DIFF_FILE_VALID(s) ? "valid" : "invalid",
s->mode,
s->sha1_valid ? sha1_to_hex(s->sha1) : "");
- fprintf(stderr, "queue[%d] %s size %lu flags %d\n",
+ fprintf(stderr, "queue[%d] %s size %lu\n",
x, one ? one : "",
- s->size, s->xfrm_flags);
+ s->size);
}
void diff_debug_filepair(const struct diff_filepair *p, int i)
@@ -4173,12 +4290,7 @@ static void show_rename_copy(FILE *file, const char *renamecopy, struct diff_fil
static void diff_summary(struct diff_options *opt, struct diff_filepair *p)
{
FILE *file = opt->file;
- char *line_prefix = "";
-
- if (opt->output_prefix) {
- struct strbuf *buf = opt->output_prefix(opt, opt->output_prefix_data);
- line_prefix = buf->buf;
- }
+ const char *line_prefix = diff_line_prefix(opt);
switch(p->status) {
case DIFF_STATUS_DELETED:
@@ -4232,7 +4344,7 @@ static void patch_id_consume(void *priv, char *line, unsigned long len)
int new_len;
/* Ignore line numbers when computing the SHA1 of the patch */
- if (!prefixcmp(line, "@@ -"))
+ if (starts_with(line, "@@ -"))
return;
new_len = remove_space(line, len);
@@ -4459,7 +4571,7 @@ void diff_flush(struct diff_options *options)
DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) {
/*
* run diff_flush_patch for the exit status. setting
- * options->file to /dev/null should be safe, becaue we
+ * options->file to /dev/null should be safe, because we
* aren't supposed to produce any output anyway.
*/
if (options->close_file)
@@ -4479,13 +4591,9 @@ void diff_flush(struct diff_options *options)
if (output_format & DIFF_FORMAT_PATCH) {
if (separator) {
- if (options->output_prefix) {
- struct strbuf *msg = NULL;
- msg = options->output_prefix(options,
- options->output_prefix_data);
- fwrite(msg->buf, msg->len, 1, stdout);
- }
- putc(options->line_termination, options->file);
+ fprintf(options->file, "%s%c",
+ diff_line_prefix(options),
+ options->line_termination);
if (options->stat_sep) {
/* attach patch instead of inline */
fputs(options->stat_sep, options->file);
@@ -4523,27 +4631,32 @@ free_queue:
}
}
-static void diffcore_apply_filter(const char *filter)
+static int match_filter(const struct diff_options *options, const struct diff_filepair *p)
+{
+ return (((p->status == DIFF_STATUS_MODIFIED) &&
+ ((p->score &&
+ filter_bit_tst(DIFF_STATUS_FILTER_BROKEN, options)) ||
+ (!p->score &&
+ filter_bit_tst(DIFF_STATUS_MODIFIED, options)))) ||
+ ((p->status != DIFF_STATUS_MODIFIED) &&
+ filter_bit_tst(p->status, options)));
+}
+
+static void diffcore_apply_filter(struct diff_options *options)
{
int i;
struct diff_queue_struct *q = &diff_queued_diff;
struct diff_queue_struct outq;
+
DIFF_QUEUE_CLEAR(&outq);
- if (!filter)
+ if (!options->filter)
return;
- if (strchr(filter, DIFF_STATUS_FILTER_AON)) {
+ if (filter_bit_tst(DIFF_STATUS_FILTER_AON, options)) {
int found;
for (i = found = 0; !found && i < q->nr; i++) {
- struct diff_filepair *p = q->queue[i];
- if (((p->status == DIFF_STATUS_MODIFIED) &&
- ((p->score &&
- strchr(filter, DIFF_STATUS_FILTER_BROKEN)) ||
- (!p->score &&
- strchr(filter, DIFF_STATUS_MODIFIED)))) ||
- ((p->status != DIFF_STATUS_MODIFIED) &&
- strchr(filter, p->status)))
+ if (match_filter(options, q->queue[i]))
found++;
}
if (found)
@@ -4561,14 +4674,7 @@ static void diffcore_apply_filter(const char *filter)
/* Only the matching ones */
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
-
- if (((p->status == DIFF_STATUS_MODIFIED) &&
- ((p->score &&
- strchr(filter, DIFF_STATUS_FILTER_BROKEN)) ||
- (!p->score &&
- strchr(filter, DIFF_STATUS_MODIFIED)))) ||
- ((p->status != DIFF_STATUS_MODIFIED) &&
- strchr(filter, p->status)))
+ if (match_filter(options, p))
diff_q(&outq, p);
else
diff_free_filepair(p);
@@ -4591,6 +4697,38 @@ static int diff_filespec_is_identical(struct diff_filespec *one,
return !memcmp(one->data, two->data, one->size);
}
+static int diff_filespec_check_stat_unmatch(struct diff_filepair *p)
+{
+ if (p->done_skip_stat_unmatch)
+ return p->skip_stat_unmatch_result;
+
+ p->done_skip_stat_unmatch = 1;
+ p->skip_stat_unmatch_result = 0;
+ /*
+ * 1. Entries that come from stat info dirtiness
+ * always have both sides (iow, not create/delete),
+ * one side of the object name is unknown, with
+ * the same mode and size. Keep the ones that
+ * do not match these criteria. They have real
+ * differences.
+ *
+ * 2. At this point, the file is known to be modified,
+ * with the same mode and size, and the object
+ * name of one side is unknown. Need to inspect
+ * the identical contents.
+ */
+ if (!DIFF_FILE_VALID(p->one) || /* (1) */
+ !DIFF_FILE_VALID(p->two) ||
+ (p->one->sha1_valid && p->two->sha1_valid) ||
+ (p->one->mode != p->two->mode) ||
+ diff_populate_filespec(p->one, 1) ||
+ diff_populate_filespec(p->two, 1) ||
+ (p->one->size != p->two->size) ||
+ !diff_filespec_is_identical(p->one, p->two)) /* (2) */
+ p->skip_stat_unmatch_result = 1;
+ return p->skip_stat_unmatch_result;
+}
+
static void diffcore_skip_stat_unmatch(struct diff_options *diffopt)
{
int i;
@@ -4601,27 +4739,7 @@ static void diffcore_skip_stat_unmatch(struct diff_options *diffopt)
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
- /*
- * 1. Entries that come from stat info dirtiness
- * always have both sides (iow, not create/delete),
- * one side of the object name is unknown, with
- * the same mode and size. Keep the ones that
- * do not match these criteria. They have real
- * differences.
- *
- * 2. At this point, the file is known to be modified,
- * with the same mode and size, and the object
- * name of one side is unknown. Need to inspect
- * the identical contents.
- */
- if (!DIFF_FILE_VALID(p->one) || /* (1) */
- !DIFF_FILE_VALID(p->two) ||
- (p->one->sha1_valid && p->two->sha1_valid) ||
- (p->one->mode != p->two->mode) ||
- diff_populate_filespec(p->one, 1) ||
- diff_populate_filespec(p->two, 1) ||
- (p->one->size != p->two->size) ||
- !diff_filespec_is_identical(p->one, p->two)) /* (2) */
+ if (diff_filespec_check_stat_unmatch(p))
diff_q(&outq, p);
else {
/*
@@ -4675,7 +4793,7 @@ void diffcore_std(struct diff_options *options)
if (!options->found_follow)
/* See try_to_follow_renames() in tree-diff.c */
diff_resolve_rename_copy();
- diffcore_apply_filter(options->filter);
+ diffcore_apply_filter(options);
if (diff_queued_diff.nr && !DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
DIFF_OPT_SET(options, HAS_CHANGES);
@@ -4689,7 +4807,7 @@ int diff_result_code(struct diff_options *opt, int status)
{
int result = 0;
- diff_warn_rename_limit("diff.renamelimit",
+ diff_warn_rename_limit("diff.renameLimit",
opt->needed_rename_limit,
opt->degraded_cc_to_c);
if (!DIFF_OPT_TST(opt, EXIT_WITH_STATUS) &&
@@ -4784,6 +4902,7 @@ void diff_change(struct diff_options *options,
unsigned old_dirty_submodule, unsigned new_dirty_submodule)
{
struct diff_filespec *one, *two;
+ struct diff_filepair *p;
if (S_ISGITLINK(old_mode) && S_ISGITLINK(new_mode) &&
is_submodule_ignored(concatpath, options))
@@ -4810,10 +4929,16 @@ void diff_change(struct diff_options *options,
fill_filespec(two, new_sha1, new_sha1_valid, new_mode);
one->dirty_submodule = old_dirty_submodule;
two->dirty_submodule = new_dirty_submodule;
+ p = diff_queue(&diff_queued_diff, one, two);
- diff_queue(&diff_queued_diff, one, two);
- if (!DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
- DIFF_OPT_SET(options, HAS_CHANGES);
+ if (DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
+ return;
+
+ if (DIFF_OPT_TST(options, QUICK) && options->skip_stat_unmatch &&
+ !diff_filespec_check_stat_unmatch(p))
+ return;
+
+ DIFF_OPT_SET(options, HAS_CHANGES);
}
struct diff_filepair *diff_unmerge(struct diff_options *options, const char *path)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 12:44:32 +0000