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-rw-r--r--Documentation/diff-options.txt10
-rw-r--r--builtin/log.c4
-rw-r--r--combine-diff.c2
-rw-r--r--diff.c43
-rw-r--r--diff.h13
-rw-r--r--diffcore-pickaxe.c48
-rw-r--r--revision.c7
-rwxr-xr-xt/t4064-diff-oidfind.sh68
8 files changed, 155 insertions, 40 deletions
diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index 743af97b06..c330c01ff0 100644
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -508,6 +508,15 @@ occurrences of that string did not change).
See the 'pickaxe' entry in linkgit:gitdiffcore[7] for more
information.
+--find-object=<object-id>::
+ Look for differences that change the number of occurrences of
+ the specified object. Similar to `-S`, just the argument is different
+ in that it doesn't search for a specific string but for a specific
+ object id.
++
+The object can be a blob or a submodule commit. It implies the `-t` option in
+`git-log` to also find trees.
+
--pickaxe-all::
When `-S` or `-G` finds a change, show all the changes in that
changeset, not just the files that contain the change
@@ -516,6 +525,7 @@ information.
--pickaxe-regex::
Treat the <string> given to `-S` as an extended POSIX regular
expression to match.
+
endif::git-format-patch[]
-O<orderfile>::
diff --git a/builtin/log.c b/builtin/log.c
index 14fdf39165..46b4ca13e5 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -188,8 +188,8 @@ static void cmd_log_init_finish(int argc, const char **argv, const char *prefix,
if (rev->show_notes)
init_display_notes(&rev->notes_opt);
- if (rev->diffopt.pickaxe || rev->diffopt.filter ||
- rev->diffopt.flags.follow_renames)
+ if ((rev->diffopt.pickaxe_opts & DIFF_PICKAXE_KINDS_MASK) ||
+ rev->diffopt.filter || rev->diffopt.flags.follow_renames)
rev->always_show_header = 0;
if (source)
diff --git a/combine-diff.c b/combine-diff.c
index 2505de119a..bc08c4c5b1 100644
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -1438,7 +1438,7 @@ void diff_tree_combined(const struct object_id *oid,
opt->flags.follow_renames ||
opt->break_opt != -1 ||
opt->detect_rename ||
- opt->pickaxe ||
+ (opt->pickaxe_opts & DIFF_PICKAXE_KINDS_MASK) ||
opt->filter;
diff --git a/diff.c b/diff.c
index db4696fdf5..0a9a0cdf18 100644
--- a/diff.c
+++ b/diff.c
@@ -4086,6 +4086,7 @@ void diff_setup(struct diff_options *options)
options->interhunkcontext = diff_interhunk_context_default;
options->ws_error_highlight = ws_error_highlight_default;
options->flags.rename_empty = 1;
+ options->objfind = NULL;
/* pathchange left =NULL by default */
options->change = diff_change;
@@ -4110,22 +4111,20 @@ void diff_setup(struct diff_options *options)
void diff_setup_done(struct diff_options *options)
{
- int count = 0;
+ unsigned check_mask = DIFF_FORMAT_NAME |
+ DIFF_FORMAT_NAME_STATUS |
+ DIFF_FORMAT_CHECKDIFF |
+ DIFF_FORMAT_NO_OUTPUT;
if (options->set_default)
options->set_default(options);
- if (options->output_format & DIFF_FORMAT_NAME)
- count++;
- if (options->output_format & DIFF_FORMAT_NAME_STATUS)
- count++;
- if (options->output_format & DIFF_FORMAT_CHECKDIFF)
- count++;
- if (options->output_format & DIFF_FORMAT_NO_OUTPUT)
- count++;
- if (count > 1)
+ if (HAS_MULTI_BITS(options->output_format & check_mask))
die(_("--name-only, --name-status, --check and -s are mutually exclusive"));
+ if (HAS_MULTI_BITS(options->pickaxe_opts & DIFF_PICKAXE_KINDS_MASK))
+ die(_("-G, -S and --find-object are mutually exclusive"));
+
/*
* Most of the time we can say "there are changes"
* only by checking if there are changed paths, but
@@ -4175,7 +4174,7 @@ void diff_setup_done(struct diff_options *options)
/*
* Also pickaxe would not work very well if you do not say recursive
*/
- if (options->pickaxe)
+ if (options->pickaxe_opts & DIFF_PICKAXE_KINDS_MASK)
options->flags.recursive = 1;
/*
* When patches are generated, submodules diffed against the work tree
@@ -4489,6 +4488,23 @@ static int parse_ws_error_highlight_opt(struct diff_options *opt, const char *ar
return 1;
}
+static int parse_objfind_opt(struct diff_options *opt, const char *arg)
+{
+ struct object_id oid;
+
+ if (get_oid(arg, &oid))
+ return error("unable to resolve '%s'", arg);
+
+ if (!opt->objfind)
+ opt->objfind = xcalloc(1, sizeof(*opt->objfind));
+
+ opt->pickaxe_opts |= DIFF_PICKAXE_KIND_OBJFIND;
+ opt->flags.recursive = 1;
+ opt->flags.tree_in_recursive = 1;
+ oidset_insert(opt->objfind, &oid);
+ return 1;
+}
+
int diff_opt_parse(struct diff_options *options,
const char **av, int ac, const char *prefix)
{
@@ -4736,7 +4752,8 @@ int diff_opt_parse(struct diff_options *options,
else if ((argcount = short_opt('O', av, &optarg))) {
options->orderfile = prefix_filename(prefix, optarg);
return argcount;
- }
+ } else if (skip_prefix(arg, "--find-object=", &arg))
+ return parse_objfind_opt(options, arg);
else if ((argcount = parse_long_opt("diff-filter", av, &optarg))) {
int offending = parse_diff_filter_opt(optarg, options);
if (offending)
@@ -5783,7 +5800,7 @@ void diffcore_std(struct diff_options *options)
if (options->break_opt != -1)
diffcore_merge_broken();
}
- if (options->pickaxe)
+ if (options->pickaxe_opts & DIFF_PICKAXE_KINDS_MASK)
diffcore_pickaxe(options);
if (options->orderfile)
diffcore_order(options->orderfile);
diff --git a/diff.h b/diff.h
index 7cf276f077..6bd278aac1 100644
--- a/diff.h
+++ b/diff.h
@@ -7,6 +7,7 @@
#include "tree-walk.h"
#include "pathspec.h"
#include "object.h"
+#include "oidset.h"
struct rev_info;
struct diff_options;
@@ -91,7 +92,6 @@ struct diff_flags {
unsigned override_submodule_config:1;
unsigned dirstat_by_line:1;
unsigned funccontext:1;
- unsigned pickaxe_ignore_case:1;
unsigned default_follow_renames:1;
};
@@ -146,7 +146,7 @@ struct diff_options {
int skip_stat_unmatch;
int line_termination;
int output_format;
- int pickaxe_opts;
+ unsigned pickaxe_opts;
int rename_score;
int rename_limit;
int needed_rename_limit;
@@ -178,6 +178,8 @@ struct diff_options {
enum diff_words_type word_diff;
enum diff_submodule_format submodule_format;
+ struct oidset *objfind;
+
/* this is set by diffcore for DIFF_FORMAT_PATCH */
int found_changes;
@@ -330,6 +332,13 @@ extern void diff_setup_done(struct diff_options *);
#define DIFF_PICKAXE_KIND_S 4 /* traditional plumbing counter */
#define DIFF_PICKAXE_KIND_G 8 /* grep in the patch */
+#define DIFF_PICKAXE_KIND_OBJFIND 16 /* specific object IDs */
+
+#define DIFF_PICKAXE_KINDS_MASK (DIFF_PICKAXE_KIND_S | \
+ DIFF_PICKAXE_KIND_G | \
+ DIFF_PICKAXE_KIND_OBJFIND)
+
+#define DIFF_PICKAXE_IGNORE_CASE 32
extern void diffcore_std(struct diff_options *);
extern void diffcore_fix_diff_index(struct diff_options *);
diff --git a/diffcore-pickaxe.c b/diffcore-pickaxe.c
index 9476bd2108..239ce5122b 100644
--- a/diffcore-pickaxe.c
+++ b/diffcore-pickaxe.c
@@ -124,13 +124,20 @@ static int pickaxe_match(struct diff_filepair *p, struct diff_options *o,
mmfile_t mf1, mf2;
int ret;
- if (!o->pickaxe[0])
- return 0;
-
/* ignore unmerged */
if (!DIFF_FILE_VALID(p->one) && !DIFF_FILE_VALID(p->two))
return 0;
+ if (o->objfind) {
+ return (DIFF_FILE_VALID(p->one) &&
+ oidset_contains(o->objfind, &p->one->oid)) ||
+ (DIFF_FILE_VALID(p->two) &&
+ oidset_contains(o->objfind, &p->two->oid));
+ }
+
+ if (!o->pickaxe[0])
+ return 0;
+
if (o->flags.allow_textconv) {
textconv_one = get_textconv(p->one);
textconv_two = get_textconv(p->two);
@@ -222,33 +229,34 @@ void diffcore_pickaxe(struct diff_options *o)
if (opts & (DIFF_PICKAXE_REGEX | DIFF_PICKAXE_KIND_G)) {
int cflags = REG_EXTENDED | REG_NEWLINE;
- if (o->flags.pickaxe_ignore_case)
+ if (o->pickaxe_opts & DIFF_PICKAXE_IGNORE_CASE)
cflags |= REG_ICASE;
regcomp_or_die(&regex, needle, cflags);
regexp = &regex;
- } else if (o->flags.pickaxe_ignore_case &&
- has_non_ascii(needle)) {
- struct strbuf sb = STRBUF_INIT;
- int cflags = REG_NEWLINE | REG_ICASE;
-
- basic_regex_quote_buf(&sb, needle);
- regcomp_or_die(&regex, sb.buf, cflags);
- strbuf_release(&sb);
- regexp = &regex;
- } else {
- kws = kwsalloc(o->flags.pickaxe_ignore_case
- ? tolower_trans_tbl : NULL);
- kwsincr(kws, needle, strlen(needle));
- kwsprep(kws);
+ } else if (opts & DIFF_PICKAXE_KIND_S) {
+ if (o->pickaxe_opts & DIFF_PICKAXE_IGNORE_CASE &&
+ has_non_ascii(needle)) {
+ struct strbuf sb = STRBUF_INIT;
+ int cflags = REG_NEWLINE | REG_ICASE;
+
+ basic_regex_quote_buf(&sb, needle);
+ regcomp_or_die(&regex, sb.buf, cflags);
+ strbuf_release(&sb);
+ regexp = &regex;
+ } else {
+ kws = kwsalloc(o->pickaxe_opts & DIFF_PICKAXE_IGNORE_CASE
+ ? tolower_trans_tbl : NULL);
+ kwsincr(kws, needle, strlen(needle));
+ kwsprep(kws);
+ }
}
- /* Might want to warn when both S and G are on; I don't care... */
pickaxe(&diff_queued_diff, o, regexp, kws,
(opts & DIFF_PICKAXE_KIND_G) ? diff_grep : has_changes);
if (regexp)
regfree(regexp);
- else
+ if (kws)
kwsfree(kws);
return;
}
diff --git a/revision.c b/revision.c
index 1f7454c947..a60628fbff 100644
--- a/revision.c
+++ b/revision.c
@@ -2078,7 +2078,7 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
revs->grep_filter.pattern_type_option = GREP_PATTERN_TYPE_ERE;
} else if (!strcmp(arg, "--regexp-ignore-case") || !strcmp(arg, "-i")) {
revs->grep_filter.ignore_case = 1;
- revs->diffopt.flags.pickaxe_ignore_case = 1;
+ revs->diffopt.pickaxe_opts |= DIFF_PICKAXE_IGNORE_CASE;
} else if (!strcmp(arg, "--fixed-strings") || !strcmp(arg, "-F")) {
revs->grep_filter.pattern_type_option = GREP_PATTERN_TYPE_FIXED;
} else if (!strcmp(arg, "--perl-regexp") || !strcmp(arg, "-P")) {
@@ -2409,11 +2409,14 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s
revs->diff = 1;
/* Pickaxe, diff-filter and rename following need diffs */
- if (revs->diffopt.pickaxe ||
+ if ((revs->diffopt.pickaxe_opts & DIFF_PICKAXE_KINDS_MASK) ||
revs->diffopt.filter ||
revs->diffopt.flags.follow_renames)
revs->diff = 1;
+ if (revs->diffopt.objfind)
+ revs->simplify_history = 0;
+
if (revs->topo_order)
revs->limited = 1;
diff --git a/t/t4064-diff-oidfind.sh b/t/t4064-diff-oidfind.sh
new file mode 100755
index 0000000000..3bdf317af8
--- /dev/null
+++ b/t/t4064-diff-oidfind.sh
@@ -0,0 +1,68 @@
+#!/bin/sh
+
+test_description='test finding specific blobs in the revision walking'
+. ./test-lib.sh
+
+test_expect_success 'setup ' '
+ git commit --allow-empty -m "empty initial commit" &&
+
+ echo "Hello, world!" >greeting &&
+ git add greeting &&
+ git commit -m "add the greeting blob" && # borrowed from Git from the Bottom Up
+ git tag -m "the blob" greeting $(git rev-parse HEAD:greeting) &&
+
+ echo asdf >unrelated &&
+ git add unrelated &&
+ git commit -m "unrelated history" &&
+
+ git revert HEAD^ &&
+
+ git commit --allow-empty -m "another unrelated commit"
+'
+
+test_expect_success 'find the greeting blob' '
+ cat >expect <<-EOF &&
+ Revert "add the greeting blob"
+ add the greeting blob
+ EOF
+
+ git log --format=%s --find-object=greeting^{blob} >actual &&
+
+ test_cmp expect actual
+'
+
+test_expect_success 'setup a tree' '
+ mkdir a &&
+ echo asdf >a/file &&
+ git add a/file &&
+ git commit -m "add a file in a subdirectory"
+'
+
+test_expect_success 'find a tree' '
+ cat >expect <<-EOF &&
+ add a file in a subdirectory
+ EOF
+
+ git log --format=%s -t --find-object=HEAD:a >actual &&
+
+ test_cmp expect actual
+'
+
+test_expect_success 'setup a submodule' '
+ test_create_repo sub &&
+ test_commit -C sub sub &&
+ git submodule add ./sub sub &&
+ git commit -a -m "add sub"
+'
+
+test_expect_success 'find a submodule' '
+ cat >expect <<-EOF &&
+ add sub
+ EOF
+
+ git log --format=%s --find-object=HEAD:sub >actual &&
+
+ test_cmp expect actual
+'
+
+test_done