From: Jeff Smith <whydoubt@gmail.com>
To: git@vger.kernel.org
Cc: gitster@pobox.com, peff@peff.net, Jeff Smith <whydoubt@gmail.com>
Subject: [RFC PATCH 06/10] Move fake_working_tree_commit() to lib
Date: Fri, 5 May 2017 00:27:25 -0500 [thread overview]
Message-ID: <20170505052729.7576-7-whydoubt@gmail.com> (raw)
In-Reply-To: <20170505052729.7576-1-whydoubt@gmail.com>
Signed-off-by: Jeff Smith <whydoubt@gmail.com>
---
Makefile | 1 +
builtin/blame.c | 198 +------------------------------------------------------
commit-fake.c | 200 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
commit-fake.h | 9 +++
4 files changed, 211 insertions(+), 197 deletions(-)
create mode 100644 commit-fake.c
create mode 100644 commit-fake.h
diff --git a/Makefile b/Makefile
index 8cbb56c..b197a37 100644
--- a/Makefile
+++ b/Makefile
@@ -727,6 +727,7 @@ LIB_OBJS += color.o
LIB_OBJS += column.o
LIB_OBJS += combine-diff.o
LIB_OBJS += commit.o
+LIB_OBJS += commit-fake.o
LIB_OBJS += compat/obstack.o
LIB_OBJS += compat/terminal.o
LIB_OBJS += config.o
diff --git a/builtin/blame.c b/builtin/blame.c
index 7ee84c1..c873cc2 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -16,7 +16,6 @@
#include "revision.h"
#include "quote.h"
#include "xdiff-interface.h"
-#include "cache-tree.h"
#include "string-list.h"
#include "mailmap.h"
#include "mergesort.h"
@@ -29,6 +28,7 @@
#include "dir.h"
#include "progress.h"
#include "origin.h"
+#include "commit-fake.h"
static char blame_usage[] = N_("git blame [<options>] [<rev-opts>] [<rev>] [--] <file>");
@@ -2044,202 +2044,6 @@ static int git_blame_config(const char *var, const char *value, void *cb)
return git_default_config(var, value, cb);
}
-static void verify_working_tree_path(struct commit *work_tree, const char *path)
-{
- struct commit_list *parents;
- int pos;
-
- for (parents = work_tree->parents; parents; parents = parents->next) {
- const struct object_id *commit_oid = &parents->item->object.oid;
- struct object_id blob_oid;
- unsigned mode;
-
- if (!get_tree_entry(commit_oid->hash, path, blob_oid.hash, &mode) &&
- sha1_object_info(blob_oid.hash, NULL) == OBJ_BLOB)
- return;
- }
-
- pos = cache_name_pos(path, strlen(path));
- if (pos >= 0)
- ; /* path is in the index */
- else if (-1 - pos < active_nr &&
- !strcmp(active_cache[-1 - pos]->name, path))
- ; /* path is in the index, unmerged */
- else
- die("no such path '%s' in HEAD", path);
-}
-
-static struct commit_list **append_parent(struct commit_list **tail, const struct object_id *oid)
-{
- struct commit *parent;
-
- parent = lookup_commit_reference(oid->hash);
- if (!parent)
- die("no such commit %s", oid_to_hex(oid));
- return &commit_list_insert(parent, tail)->next;
-}
-
-static void append_merge_parents(struct commit_list **tail)
-{
- int merge_head;
- struct strbuf line = STRBUF_INIT;
-
- merge_head = open(git_path_merge_head(), O_RDONLY);
- if (merge_head < 0) {
- if (errno == ENOENT)
- return;
- die("cannot open '%s' for reading", git_path_merge_head());
- }
-
- while (!strbuf_getwholeline_fd(&line, merge_head, '\n')) {
- struct object_id oid;
- if (line.len < GIT_SHA1_HEXSZ || get_oid_hex(line.buf, &oid))
- die("unknown line in '%s': %s", git_path_merge_head(), line.buf);
- tail = append_parent(tail, &oid);
- }
- close(merge_head);
- strbuf_release(&line);
-}
-
-/*
- * This isn't as simple as passing sb->buf and sb->len, because we
- * want to transfer ownership of the buffer to the commit (so we
- * must use detach).
- */
-static void set_commit_buffer_from_strbuf(struct commit *c, struct strbuf *sb)
-{
- size_t len;
- void *buf = strbuf_detach(sb, &len);
- set_commit_buffer(c, buf, len);
-}
-
-/*
- * Prepare a dummy commit that represents the work tree (or staged) item.
- * Note that annotating work tree item never works in the reverse.
- */
-static struct commit *fake_working_tree_commit(struct diff_options *opt,
- const char *path,
- const char *contents_from)
-{
- struct commit *commit;
- struct origin *origin;
- struct commit_list **parent_tail, *parent;
- struct object_id head_oid;
- struct strbuf buf = STRBUF_INIT;
- const char *ident;
- time_t now;
- int size, len;
- struct cache_entry *ce;
- unsigned mode;
- struct strbuf msg = STRBUF_INIT;
-
- read_cache();
- time(&now);
- commit = alloc_commit_node();
- commit->object.parsed = 1;
- commit->date = now;
- parent_tail = &commit->parents;
-
- if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, head_oid.hash, NULL))
- die("no such ref: HEAD");
-
- parent_tail = append_parent(parent_tail, &head_oid);
- append_merge_parents(parent_tail);
- verify_working_tree_path(commit, path);
-
- origin = make_origin(commit, path);
-
- ident = fmt_ident("Not Committed Yet", "not.committed.yet", NULL, 0);
- strbuf_addstr(&msg, "tree 0000000000000000000000000000000000000000\n");
- for (parent = commit->parents; parent; parent = parent->next)
- strbuf_addf(&msg, "parent %s\n",
- oid_to_hex(&parent->item->object.oid));
- strbuf_addf(&msg,
- "author %s\n"
- "committer %s\n\n"
- "Version of %s from %s\n",
- ident, ident, path,
- (!contents_from ? path :
- (!strcmp(contents_from, "-") ? "standard input" : contents_from)));
- set_commit_buffer_from_strbuf(commit, &msg);
-
- if (!contents_from || strcmp("-", contents_from)) {
- struct stat st;
- const char *read_from;
- char *buf_ptr;
- unsigned long buf_len;
-
- if (contents_from) {
- if (stat(contents_from, &st) < 0)
- die_errno("Cannot stat '%s'", contents_from);
- read_from = contents_from;
- }
- else {
- if (lstat(path, &st) < 0)
- die_errno("Cannot lstat '%s'", path);
- read_from = path;
- }
- mode = canon_mode(st.st_mode);
-
- switch (st.st_mode & S_IFMT) {
- case S_IFREG:
- if (DIFF_OPT_TST(opt, ALLOW_TEXTCONV) &&
- textconv_object(read_from, mode, &null_oid, 0, &buf_ptr, &buf_len))
- strbuf_attach(&buf, buf_ptr, buf_len, buf_len + 1);
- else if (strbuf_read_file(&buf, read_from, st.st_size) != st.st_size)
- die_errno("cannot open or read '%s'", read_from);
- break;
- case S_IFLNK:
- if (strbuf_readlink(&buf, read_from, st.st_size) < 0)
- die_errno("cannot readlink '%s'", read_from);
- break;
- default:
- die("unsupported file type %s", read_from);
- }
- }
- else {
- /* Reading from stdin */
- mode = 0;
- if (strbuf_read(&buf, 0, 0) < 0)
- die_errno("failed to read from stdin");
- }
- convert_to_git(path, buf.buf, buf.len, &buf, 0);
- origin->file.ptr = buf.buf;
- origin->file.size = buf.len;
- pretend_sha1_file(buf.buf, buf.len, OBJ_BLOB, origin->blob_oid.hash);
-
- /*
- * Read the current index, replace the path entry with
- * origin->blob_sha1 without mucking with its mode or type
- * bits; we are not going to write this index out -- we just
- * want to run "diff-index --cached".
- */
- discard_cache();
- read_cache();
-
- len = strlen(path);
- if (!mode) {
- int pos = cache_name_pos(path, len);
- if (0 <= pos)
- mode = active_cache[pos]->ce_mode;
- else
- /* Let's not bother reading from HEAD tree */
- mode = S_IFREG | 0644;
- }
- size = cache_entry_size(len);
- ce = xcalloc(1, size);
- oidcpy(&ce->oid, &origin->blob_oid);
- memcpy(ce->name, path, len);
- ce->ce_flags = create_ce_flags(0);
- ce->ce_namelen = len;
- ce->ce_mode = create_ce_mode(mode);
- add_cache_entry(ce, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE);
-
- cache_tree_invalidate_path(&the_index, path);
-
- return commit;
-}
-
static struct commit *find_single_final(struct rev_info *revs,
const char **name_p)
{
diff --git a/commit-fake.c b/commit-fake.c
new file mode 100644
index 0000000..d73e0d8
--- /dev/null
+++ b/commit-fake.c
@@ -0,0 +1,200 @@
+#include "refs.h"
+#include "cache-tree.h"
+#include "origin.h"
+#include "commit-fake.h"
+
+static void verify_working_tree_path(struct commit *work_tree, const char *path)
+{
+ struct commit_list *parents;
+ int pos;
+
+ for (parents = work_tree->parents; parents; parents = parents->next) {
+ const struct object_id *commit_oid = &parents->item->object.oid;
+ struct object_id blob_oid;
+ unsigned mode;
+
+ if (!get_tree_entry(commit_oid->hash, path, blob_oid.hash, &mode) &&
+ sha1_object_info(blob_oid.hash, NULL) == OBJ_BLOB)
+ return;
+ }
+
+ pos = cache_name_pos(path, strlen(path));
+ if (pos >= 0)
+ ; /* path is in the index */
+ else if (-1 - pos < active_nr &&
+ !strcmp(active_cache[-1 - pos]->name, path))
+ ; /* path is in the index, unmerged */
+ else
+ die("no such path '%s' in HEAD", path);
+}
+
+static struct commit_list **append_parent(struct commit_list **tail, const struct object_id *oid)
+{
+ struct commit *parent;
+
+ parent = lookup_commit_reference(oid->hash);
+ if (!parent)
+ die("no such commit %s", oid_to_hex(oid));
+ return &commit_list_insert(parent, tail)->next;
+}
+
+static void append_merge_parents(struct commit_list **tail)
+{
+ int merge_head;
+ struct strbuf line = STRBUF_INIT;
+
+ merge_head = open(git_path_merge_head(), O_RDONLY);
+ if (merge_head < 0) {
+ if (errno == ENOENT)
+ return;
+ die("cannot open '%s' for reading", git_path_merge_head());
+ }
+
+ while (!strbuf_getwholeline_fd(&line, merge_head, '\n')) {
+ struct object_id oid;
+ if (line.len < GIT_SHA1_HEXSZ || get_oid_hex(line.buf, &oid))
+ die("unknown line in '%s': %s", git_path_merge_head(), line.buf);
+ tail = append_parent(tail, &oid);
+ }
+ close(merge_head);
+ strbuf_release(&line);
+}
+
+/*
+ * This isn't as simple as passing sb->buf and sb->len, because we
+ * want to transfer ownership of the buffer to the commit (so we
+ * must use detach).
+ */
+static void set_commit_buffer_from_strbuf(struct commit *c, struct strbuf *sb)
+{
+ size_t len;
+ void *buf = strbuf_detach(sb, &len);
+ set_commit_buffer(c, buf, len);
+}
+
+/*
+ * Prepare a dummy commit that represents the work tree (or staged) item.
+ * Note that annotating work tree item never works in the reverse.
+ */
+struct commit *fake_working_tree_commit(struct diff_options *opt,
+ const char *path,
+ const char *contents_from)
+{
+ struct commit *commit;
+ struct origin *origin;
+ struct commit_list **parent_tail, *parent;
+ struct object_id head_oid;
+ struct strbuf buf = STRBUF_INIT;
+ const char *ident;
+ time_t now;
+ int size, len;
+ struct cache_entry *ce;
+ unsigned mode;
+ struct strbuf msg = STRBUF_INIT;
+
+ read_cache();
+ time(&now);
+ commit = alloc_commit_node();
+ commit->object.parsed = 1;
+ commit->date = now;
+ parent_tail = &commit->parents;
+
+ if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, head_oid.hash, NULL))
+ die("no such ref: HEAD");
+
+ parent_tail = append_parent(parent_tail, &head_oid);
+ append_merge_parents(parent_tail);
+ verify_working_tree_path(commit, path);
+
+ origin = make_origin(commit, path);
+
+ ident = fmt_ident("Not Committed Yet", "not.committed.yet", NULL, 0);
+ strbuf_addstr(&msg, "tree 0000000000000000000000000000000000000000\n");
+ for (parent = commit->parents; parent; parent = parent->next)
+ strbuf_addf(&msg, "parent %s\n",
+ oid_to_hex(&parent->item->object.oid));
+ strbuf_addf(&msg,
+ "author %s\n"
+ "committer %s\n\n"
+ "Version of %s from %s\n",
+ ident, ident, path,
+ (!contents_from ? path :
+ (!strcmp(contents_from, "-") ? "standard input" : contents_from)));
+ set_commit_buffer_from_strbuf(commit, &msg);
+
+ if (!contents_from || strcmp("-", contents_from)) {
+ struct stat st;
+ const char *read_from;
+ char *buf_ptr;
+ unsigned long buf_len;
+
+ if (contents_from) {
+ if (stat(contents_from, &st) < 0)
+ die_errno("Cannot stat '%s'", contents_from);
+ read_from = contents_from;
+ }
+ else {
+ if (lstat(path, &st) < 0)
+ die_errno("Cannot lstat '%s'", path);
+ read_from = path;
+ }
+ mode = canon_mode(st.st_mode);
+
+ switch (st.st_mode & S_IFMT) {
+ case S_IFREG:
+ if (DIFF_OPT_TST(opt, ALLOW_TEXTCONV) &&
+ textconv_object(read_from, mode, &null_oid, 0, &buf_ptr, &buf_len))
+ strbuf_attach(&buf, buf_ptr, buf_len, buf_len + 1);
+ else if (strbuf_read_file(&buf, read_from, st.st_size) != st.st_size)
+ die_errno("cannot open or read '%s'", read_from);
+ break;
+ case S_IFLNK:
+ if (strbuf_readlink(&buf, read_from, st.st_size) < 0)
+ die_errno("cannot readlink '%s'", read_from);
+ break;
+ default:
+ die("unsupported file type %s", read_from);
+ }
+ }
+ else {
+ /* Reading from stdin */
+ mode = 0;
+ if (strbuf_read(&buf, 0, 0) < 0)
+ die_errno("failed to read from stdin");
+ }
+ convert_to_git(path, buf.buf, buf.len, &buf, 0);
+ origin->file.ptr = buf.buf;
+ origin->file.size = buf.len;
+ pretend_sha1_file(buf.buf, buf.len, OBJ_BLOB, origin->blob_oid.hash);
+
+ /*
+ * Read the current index, replace the path entry with
+ * origin->blob_sha1 without mucking with its mode or type
+ * bits; we are not going to write this index out -- we just
+ * want to run "diff-index --cached".
+ */
+ discard_cache();
+ read_cache();
+
+ len = strlen(path);
+ if (!mode) {
+ int pos = cache_name_pos(path, len);
+ if (0 <= pos)
+ mode = active_cache[pos]->ce_mode;
+ else
+ /* Let's not bother reading from HEAD tree */
+ mode = S_IFREG | 0644;
+ }
+ size = cache_entry_size(len);
+ ce = xcalloc(1, size);
+ oidcpy(&ce->oid, &origin->blob_oid);
+ memcpy(ce->name, path, len);
+ ce->ce_flags = create_ce_flags(0);
+ ce->ce_namelen = len;
+ ce->ce_mode = create_ce_mode(mode);
+ add_cache_entry(ce, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE);
+
+ cache_tree_invalidate_path(&the_index, path);
+
+ return commit;
+}
diff --git a/commit-fake.h b/commit-fake.h
new file mode 100644
index 0000000..8232714
--- /dev/null
+++ b/commit-fake.h
@@ -0,0 +1,9 @@
+#ifndef COMMIT_FAKE_H
+#define COMMIT_FAKE_H
+
+#include "commit.h"
+#include "diff.h"
+
+struct commit *fake_working_tree_commit(struct diff_options *opt, const char *path, const char *contents_from);
+
+#endif /* COMMIT_FAKE_H */
--
2.9.3
next prev parent reply other threads:[~2017-05-05 5:28 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-05 5:27 [RFC PATCH 00/10] Add blame to libgit Jeff Smith
2017-05-05 5:27 ` [RFC PATCH 01/10] Remove unneeded dependency on blob.h from blame Jeff Smith
2017-05-05 7:07 ` Ævar Arnfjörð Bjarmason
[not found] ` <CAPX7N=6tQi+WidagvV1BA-CoaiNJj7OO4U7GYXNE-QzyvD=QRQ@mail.gmail.com>
2017-05-05 14:03 ` Jeffrey Smith
2017-05-05 5:27 ` [RFC PATCH 02/10] Move textconv_object to be with other textconv methods Jeff Smith
2017-05-05 17:44 ` Junio C Hamano
2017-05-05 17:50 ` Stefan Beller
2017-05-08 1:02 ` Junio C Hamano
2017-05-08 21:55 ` Jeff King
2017-05-08 22:06 ` Stefan Beller
2017-05-09 1:49 ` Junio C Hamano
2017-05-09 2:34 ` Jeff King
2017-05-05 5:27 ` [RFC PATCH 03/10] Add some missing definitions to header files Jeff Smith
2017-05-05 17:42 ` Junio C Hamano
2017-05-05 5:27 ` [RFC PATCH 04/10] Remove unused parameter from get_origin() Jeff Smith
2017-05-05 5:27 ` [RFC PATCH 05/10] Split blame origin into its own file Jeff Smith
2017-05-05 5:27 ` Jeff Smith [this message]
2017-05-05 5:27 ` [RFC PATCH 07/10] Break out scoreboard a little better Jeff Smith
2017-05-05 17:52 ` Junio C Hamano
2017-05-05 5:27 ` [RFC PATCH 08/10] Split blame scoreboard into its own file Jeff Smith
2017-05-05 5:27 ` [RFC PATCH 09/10] Break out scoreboard init and setup Jeff Smith
2017-05-05 5:27 ` [RFC PATCH 10/10] Move scoreboard init and setup to lib Jeff Smith
2017-05-05 17:54 ` [RFC PATCH 00/10] Add blame to libgit Junio C Hamano
2017-05-14 3:14 ` [RFC PATCH v2 00/22] " Jeff Smith
2017-05-14 3:14 ` [RFC PATCH v2 01/22] blame: remove unneeded dependency on blob.h Jeff Smith
2017-05-14 3:14 ` [RFC PATCH v2 02/22] blame: move textconv_object with related functions Jeff Smith
2017-05-14 3:14 ` [RFC PATCH v2 03/22] blame: remove unused parameters Jeff Smith
2017-05-14 3:14 ` [RFC PATCH v2 04/22] blame: move origin and entry structures to header Jeff Smith
2017-05-14 8:10 ` Junio C Hamano
2017-05-14 3:14 ` [RFC PATCH v2 05/22] blame: move scoreboard structure " Jeff Smith
2017-05-14 3:14 ` [RFC PATCH v2 06/22] blame: move stat counters to scoreboard Jeff Smith
2017-05-14 3:14 ` [RFC PATCH v2 07/22] blame: move copy/move thresholds " Jeff Smith
2017-05-14 3:14 ` [RFC PATCH v2 08/22] blame: move contents_from " Jeff Smith
2017-05-14 3:15 ` [RFC PATCH v2 09/22] blame: move reverse flag " Jeff Smith
2017-05-14 3:15 ` [RFC PATCH v2 10/22] blame: move show_root " Jeff Smith
2017-05-14 3:15 ` [RFC PATCH v2 11/22] blame: move xdl_opts flags " Jeff Smith
2017-05-14 3:15 ` [RFC PATCH v2 12/22] blame: move no_whole_file_rename flag " Jeff Smith
2017-05-14 3:15 ` [RFC PATCH v2 13/22] blame: make sanity_check use a callback in scoreboard Jeff Smith
2017-05-14 3:15 ` [RFC PATCH v2 14/22] blame: move progess updates to a scoreboard callback Jeff Smith
2017-05-14 3:15 ` [RFC PATCH v2 15/22] blame: wrap blame_sort and compare_blame_final Jeff Smith
2017-05-14 3:15 ` [RFC PATCH v2 16/22] blame: rework methods that determine 'final' commit Jeff Smith
2017-05-14 3:15 ` [RFC PATCH v2 17/22] blame: move origin-related methods to libgit Jeff Smith
2017-05-14 3:15 ` [RFC PATCH v2 18/22] blame: move fake-commit-related " Jeff Smith
2017-05-14 3:15 ` [RFC PATCH v2 19/22] blame: move scoreboard-related " Jeff Smith
2017-05-14 3:15 ` [RFC PATCH v2 20/22] blame: create scoreboard init function in libgit Jeff Smith
2017-05-14 3:15 ` [RFC PATCH v2 21/22] blame: create scoreboard setup " Jeff Smith
2017-05-14 3:15 ` [RFC PATCH v2 22/22] blame: create entry prepend " Jeff Smith
2017-05-15 9:24 ` [RFC PATCH v2 00/22] Add blame to libgit Junio C Hamano
2017-05-15 13:52 ` Jeffrey Smith
2017-05-16 0:23 ` Junio C Hamano
2017-05-16 2:44 ` Jeffrey Smith
2017-05-16 3:21 ` Junio C Hamano
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: http://vger.kernel.org/majordomo-info.html
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170505052729.7576-7-whydoubt@gmail.com \
--to=whydoubt@gmail.com \
--cc=git@vger.kernel.org \
--cc=gitster@pobox.com \
--cc=peff@peff.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://80x24.org/mirrors/git.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).