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-rw-r--r--diff.c248
1 files changed, 186 insertions, 62 deletions
diff --git a/diff.c b/diff.c
index 19b5bf63ed..fa3b29d92e 100644
--- a/diff.c
+++ b/diff.c
@@ -31,6 +31,7 @@ static const char *external_diff_cmd_cfg;
int diff_auto_refresh_index = 1;
static int diff_mnemonic_prefix;
static int diff_no_prefix;
+static struct diff_options default_diff_options;
static char diff_colors[][COLOR_MAXLEN] = {
GIT_COLOR_RESET,
@@ -107,6 +108,9 @@ int git_diff_ui_config(const char *var, const char *value, void *cb)
if (!strcmp(var, "diff.wordregex"))
return git_config_string(&diff_word_regex_cfg, var, value);
+ if (!strcmp(var, "diff.ignoresubmodules"))
+ handle_ignore_submodules_arg(&default_diff_options, value);
+
return git_diff_basic_config(var, value, cb);
}
@@ -141,6 +145,9 @@ int git_diff_basic_config(const char *var, const char *value, void *cb)
return 0;
}
+ if (!prefixcmp(var, "submodule."))
+ return parse_submodule_config_option(var, value);
+
return git_color_default_config(var, value, cb);
}
@@ -1764,8 +1771,14 @@ static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two, char *pre
static void diff_filespec_load_driver(struct diff_filespec *one)
{
- if (!one->driver)
+ /* Use already-loaded driver */
+ if (one->driver)
+ return;
+
+ if (S_ISREG(one->mode))
one->driver = userdiff_find_by_path(one->path);
+
+ /* Fallback to default settings */
if (!one->driver)
one->driver = userdiff_find_by_name("default");
}
@@ -1813,8 +1826,7 @@ struct userdiff_driver *get_textconv(struct diff_filespec *one)
{
if (!DIFF_FILE_VALID(one))
return NULL;
- if (!S_ISREG(one->mode))
- return NULL;
+
diff_filespec_load_driver(one);
if (!one->driver->textconv)
return NULL;
@@ -2146,7 +2158,7 @@ static void builtin_checkdiff(const char *name_a, const char *name_b,
ecbdata.ws_rule = data.ws_rule;
check_blank_at_eof(&mf1, &mf2, &ecbdata);
- blank_at_eof = ecbdata.blank_at_eof_in_preimage;
+ blank_at_eof = ecbdata.blank_at_eof_in_postimage;
if (blank_at_eof) {
static char *err;
@@ -2379,10 +2391,14 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only)
}
else {
enum object_type type;
- if (size_only)
+ if (size_only) {
type = sha1_object_info(s->sha1, &s->size);
- else {
+ if (type < 0)
+ die("unable to read %s", sha1_to_hex(s->sha1));
+ } else {
s->data = read_sha1_file(s->sha1, &type, &s->size);
+ if (!s->data)
+ die("unable to read %s", sha1_to_hex(s->sha1));
s->should_free = 1;
}
}
@@ -2822,7 +2838,7 @@ static void run_checkdiff(struct diff_filepair *p, struct diff_options *o)
void diff_setup(struct diff_options *options)
{
- memset(options, 0, sizeof(*options));
+ memcpy(options, &default_diff_options, sizeof(*options));
options->file = stdout;
@@ -2998,9 +3014,100 @@ static int opt_arg(const char *arg, int arg_short, const char *arg_long, int *va
static int diff_scoreopt_parse(const char *opt);
+static inline int short_opt(char opt, const char **argv,
+ const char **optarg)
+{
+ const char *arg = argv[0];
+ if (arg[0] != '-' || arg[1] != opt)
+ return 0;
+ if (arg[2] != '\0') {
+ *optarg = arg + 2;
+ return 1;
+ }
+ if (!argv[1])
+ die("Option '%c' requires a value", opt);
+ *optarg = argv[1];
+ return 2;
+}
+
+int parse_long_opt(const char *opt, const char **argv,
+ const char **optarg)
+{
+ const char *arg = argv[0];
+ if (arg[0] != '-' || arg[1] != '-')
+ return 0;
+ arg += strlen("--");
+ if (prefixcmp(arg, opt))
+ return 0;
+ arg += strlen(opt);
+ if (*arg == '=') { /* sticked form: --option=value */
+ *optarg = arg + 1;
+ return 1;
+ }
+ if (*arg != '\0')
+ return 0;
+ /* separate form: --option value */
+ if (!argv[1])
+ die("Option '--%s' requires a value", opt);
+ *optarg = argv[1];
+ return 2;
+}
+
+static int stat_opt(struct diff_options *options, const char **av)
+{
+ const char *arg = av[0];
+ char *end;
+ int width = options->stat_width;
+ int name_width = options->stat_name_width;
+ int argcount = 1;
+
+ arg += strlen("--stat");
+ end = (char *)arg;
+
+ switch (*arg) {
+ case '-':
+ if (!prefixcmp(arg, "-width")) {
+ arg += strlen("-width");
+ if (*arg == '=')
+ width = strtoul(arg + 1, &end, 10);
+ else if (!*arg && !av[1])
+ die("Option '--stat-width' requires a value");
+ else if (!*arg) {
+ width = strtoul(av[1], &end, 10);
+ argcount = 2;
+ }
+ } else if (!prefixcmp(arg, "-name-width")) {
+ arg += strlen("-name-width");
+ if (*arg == '=')
+ name_width = strtoul(arg + 1, &end, 10);
+ else if (!*arg && !av[1])
+ die("Option '--stat-name-width' requires a value");
+ else if (!*arg) {
+ name_width = strtoul(av[1], &end, 10);
+ argcount = 2;
+ }
+ }
+ break;
+ case '=':
+ width = strtoul(arg+1, &end, 10);
+ if (*end == ',')
+ name_width = strtoul(end+1, &end, 10);
+ }
+
+ /* Important! This checks all the error cases! */
+ if (*end)
+ return 0;
+ options->output_format |= DIFF_FORMAT_DIFFSTAT;
+ options->stat_name_width = name_width;
+ options->stat_width = width;
+ return argcount;
+}
+
int diff_opt_parse(struct diff_options *options, const char **av, int ac)
{
const char *arg = av[0];
+ const char *optarg;
+ int argcount;
/* Output format options */
if (!strcmp(arg, "-p") || !strcmp(arg, "-u") || !strcmp(arg, "--patch"))
@@ -3037,33 +3144,9 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
options->output_format |= DIFF_FORMAT_NAME_STATUS;
else if (!strcmp(arg, "-s"))
options->output_format |= DIFF_FORMAT_NO_OUTPUT;
- else if (!prefixcmp(arg, "--stat")) {
- char *end;
- int width = options->stat_width;
- int name_width = options->stat_name_width;
- arg += 6;
- end = (char *)arg;
-
- switch (*arg) {
- case '-':
- if (!prefixcmp(arg, "-width="))
- width = strtoul(arg + 7, &end, 10);
- else if (!prefixcmp(arg, "-name-width="))
- name_width = strtoul(arg + 12, &end, 10);
- break;
- case '=':
- width = strtoul(arg+1, &end, 10);
- if (*end == ',')
- name_width = strtoul(end+1, &end, 10);
- }
-
- /* Important! This checks all the error cases! */
- if (*end)
- return 0;
- options->output_format |= DIFF_FORMAT_DIFFSTAT;
- options->stat_name_width = name_width;
- options->stat_width = width;
- }
+ else if (!prefixcmp(arg, "--stat"))
+ /* --stat, --stat-width, or --stat-name-width */
+ return stat_opt(options, av);
/* renames options */
else if (!prefixcmp(arg, "-B")) {
@@ -3157,10 +3240,11 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
else
die("bad --word-diff argument: %s", type);
}
- else if (!prefixcmp(arg, "--word-diff-regex=")) {
+ else if ((argcount = parse_long_opt("word-diff-regex", av, &optarg))) {
if (options->word_diff == DIFF_WORDS_NONE)
options->word_diff = DIFF_WORDS_PLAIN;
- options->word_regex = arg + 18;
+ options->word_regex = optarg;
+ return argcount;
}
else if (!strcmp(arg, "--exit-code"))
DIFF_OPT_SET(options, EXIT_WITH_STATUS);
@@ -3174,11 +3258,13 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
DIFF_OPT_SET(options, ALLOW_TEXTCONV);
else if (!strcmp(arg, "--no-textconv"))
DIFF_OPT_CLR(options, ALLOW_TEXTCONV);
- else if (!strcmp(arg, "--ignore-submodules"))
+ 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 (!prefixcmp(arg, "--ignore-submodules=")) {
+ DIFF_OPT_SET(options, OVERRIDE_SUBMODULE_CONFIG);
handle_ignore_submodules_arg(options, arg + 20);
- else if (!strcmp(arg, "--submodule"))
+ } else if (!strcmp(arg, "--submodule"))
DIFF_OPT_SET(options, SUBMODULE_LOG);
else if (!prefixcmp(arg, "--submodule=")) {
if (!strcmp(arg + 12, "log"))
@@ -3188,18 +3274,26 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
/* misc options */
else if (!strcmp(arg, "-z"))
options->line_termination = 0;
- else if (!prefixcmp(arg, "-l"))
- options->rename_limit = strtoul(arg+2, NULL, 10);
- else if (!prefixcmp(arg, "-S"))
- options->pickaxe = arg + 2;
+ else if ((argcount = short_opt('l', av, &optarg))) {
+ options->rename_limit = strtoul(optarg, NULL, 10);
+ return argcount;
+ }
+ else if ((argcount = short_opt('S', av, &optarg))) {
+ options->pickaxe = optarg;
+ return argcount;
+ }
else if (!strcmp(arg, "--pickaxe-all"))
options->pickaxe_opts = DIFF_PICKAXE_ALL;
else if (!strcmp(arg, "--pickaxe-regex"))
options->pickaxe_opts = DIFF_PICKAXE_REGEX;
- else if (!prefixcmp(arg, "-O"))
- options->orderfile = arg + 2;
- else if (!prefixcmp(arg, "--diff-filter="))
- options->filter = arg + 14;
+ else if ((argcount = short_opt('O', av, &optarg))) {
+ options->orderfile = optarg;
+ return argcount;
+ }
+ else if ((argcount = parse_long_opt("diff-filter", av, &optarg))) {
+ options->filter = optarg;
+ return argcount;
+ }
else if (!strcmp(arg, "--abbrev"))
options->abbrev = DEFAULT_ABBREV;
else if (!prefixcmp(arg, "--abbrev=")) {
@@ -3209,20 +3303,25 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac)
else if (40 < options->abbrev)
options->abbrev = 40;
}
- else if (!prefixcmp(arg, "--src-prefix="))
- options->a_prefix = arg + 13;
- else if (!prefixcmp(arg, "--dst-prefix="))
- options->b_prefix = arg + 13;
+ else if ((argcount = parse_long_opt("src-prefix", av, &optarg))) {
+ options->a_prefix = optarg;
+ return argcount;
+ }
+ else if ((argcount = parse_long_opt("dst-prefix", av, &optarg))) {
+ options->b_prefix = optarg;
+ return argcount;
+ }
else if (!strcmp(arg, "--no-prefix"))
options->a_prefix = options->b_prefix = "";
else if (opt_arg(arg, '\0', "inter-hunk-context",
&options->interhunkcontext))
;
- else if (!prefixcmp(arg, "--output=")) {
- options->file = fopen(arg + strlen("--output="), "w");
+ else if ((argcount = parse_long_opt("output", av, &optarg))) {
+ options->file = fopen(optarg, "w");
if (!options->file)
- die_errno("Could not open '%s'", arg + strlen("--output="));
+ die_errno("Could not open '%s'", optarg);
options->close_file = 1;
+ return argcount;
} else
return 0;
return 1;
@@ -3437,7 +3536,7 @@ static void diff_flush_stat(struct diff_filepair *p, struct diff_options *o,
if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) ||
(DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode)))
- return; /* no tree diffs in patch format */
+ return; /* no useful stat for tree diffs */
run_diffstat(p, o, diffstat);
}
@@ -3450,7 +3549,7 @@ static void diff_flush_checkdiff(struct diff_filepair *p,
if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) ||
(DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode)))
- return; /* no tree diffs in patch format */
+ return; /* nothing to check in tree diffs */
run_checkdiff(p, o);
}
@@ -3766,9 +3865,16 @@ static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1)
len2, p->two->path);
git_SHA1_Update(&ctx, buffer, len1);
+ if (diff_filespec_is_binary(p->one) ||
+ diff_filespec_is_binary(p->two)) {
+ git_SHA1_Update(&ctx, sha1_to_hex(p->one->sha1), 40);
+ git_SHA1_Update(&ctx, sha1_to_hex(p->two->sha1), 40);
+ continue;
+ }
+
xpp.flags = 0;
xecfg.ctxlen = 3;
- xecfg.flags = XDL_EMIT_FUNCNAMES;
+ xecfg.flags = 0;
xdi_diff_outf(&mf1, &mf2, patch_id_consume, &data,
&xpp, &xecfg);
}
@@ -4110,6 +4216,24 @@ int diff_result_code(struct diff_options *opt, int status)
return result;
}
+/*
+ * Shall changes to this submodule be ignored?
+ *
+ * Submodule changes can be configured to be ignored separately for each path,
+ * but that configuration can be overridden from the command line.
+ */
+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))
+ set_diffopt_flags_from_submodule_config(options, path);
+ if (DIFF_OPT_TST(options, IGNORE_SUBMODULES))
+ ignored = 1;
+ options->flags = orig_flags;
+ return ignored;
+}
+
void diff_addremove(struct diff_options *options,
int addremove, unsigned mode,
const unsigned char *sha1,
@@ -4117,7 +4241,7 @@ void diff_addremove(struct diff_options *options,
{
struct diff_filespec *one, *two;
- if (DIFF_OPT_TST(options, IGNORE_SUBMODULES) && S_ISGITLINK(mode))
+ if (S_ISGITLINK(mode) && is_submodule_ignored(concatpath, options))
return;
/* This may look odd, but it is a preparation for
@@ -4164,8 +4288,8 @@ void diff_change(struct diff_options *options,
{
struct diff_filespec *one, *two;
- if (DIFF_OPT_TST(options, IGNORE_SUBMODULES) && S_ISGITLINK(old_mode)
- && S_ISGITLINK(new_mode))
+ if (S_ISGITLINK(old_mode) && S_ISGITLINK(new_mode) &&
+ is_submodule_ignored(concatpath, options))
return;
if (DIFF_OPT_TST(options, REVERSE_DIFF)) {
@@ -4264,7 +4388,7 @@ size_t fill_textconv(struct userdiff_driver *driver,
return df->size;
}
- if (driver->textconv_cache) {
+ if (driver->textconv_cache && df->sha1_valid) {
*outbuf = notes_cache_get(driver->textconv_cache, df->sha1,
&size);
if (*outbuf)
@@ -4275,7 +4399,7 @@ size_t fill_textconv(struct userdiff_driver *driver,
if (!*outbuf)
die("unable to read files to diff");
- if (driver->textconv_cache) {
+ if (driver->textconv_cache && df->sha1_valid) {
/* ignore errors, as we might be in a readonly repository */
notes_cache_put(driver->textconv_cache, df->sha1, *outbuf,
size);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 05:53:39 +0000