mirrors/git
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

diff.c: reduce implicit dependency on the_index

Browse Source 
diff and textconv code has so widespread use that it's hard to simply
update their api and all call sites at once because it would result in
a big patch. For now reduce the_index references to two places:
diff_setup() and fill_textconv().

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy
2018-09-21 17:57:19 +02:00
committed by Junio C Hamano
parent 92a1bf5a58
commit b78ea5fc35
8 changed files with 161 additions and 112 deletions
Download Patch File Download Diff File Expand all files Collapse all files

176
diff.c
View File

@ -554,14 +554,15 @@ static int count_lines(const char *data, int size)
return count;
}
static int fill_mmfile(mmfile_t *mf, struct diff_filespec *one)
static int fill_mmfile(struct repository *r, mmfile_t *mf,
struct diff_filespec *one)
{
if (!DIFF_FILE_VALID(one)) {
mf->ptr = (char *)""; /* does not matter */
mf->size = 0;
return 0;
}
else if (diff_populate_filespec(one, 0))
else if (diff_populate_filespec(r, one, 0))
return -1;
mf->ptr = one->data;
@ -570,11 +571,12 @@ static int fill_mmfile(mmfile_t *mf, struct diff_filespec *one)
}
/* like fill_mmfile, but only for size, so we can avoid retrieving blob */
static unsigned long diff_filespec_size(struct diff_filespec *one)
static unsigned long diff_filespec_size(struct repository *r,
struct diff_filespec *one)
{
if (!DIFF_FILE_VALID(one))
return 0;
diff_populate_filespec(one, CHECK_SIZE_ONLY);
diff_populate_filespec(r, one, CHECK_SIZE_ONLY);
return one->size;
}
@ -2965,18 +2967,19 @@ static void show_dirstat(struct diff_options *options)
}
if (DIFF_FILE_VALID(p->one) && DIFF_FILE_VALID(p->two)) {
diff_populate_filespec(p->one, 0);
diff_populate_filespec(p->two, 0);
diffcore_count_changes(p->one, p->two, NULL, NULL,
diff_populate_filespec(options->repo, p->one, 0);
diff_populate_filespec(options->repo, p->two, 0);
diffcore_count_changes(options->repo,
p->one, p->two, NULL, NULL,
&copied, &added);
diff_free_filespec_data(p->one);
diff_free_filespec_data(p->two);
} else if (DIFF_FILE_VALID(p->one)) {
diff_populate_filespec(p->one, CHECK_SIZE_ONLY);
diff_populate_filespec(options->repo, p->one, CHECK_SIZE_ONLY);
copied = added = 0;
diff_free_filespec_data(p->one);
} else if (DIFF_FILE_VALID(p->two)) {
diff_populate_filespec(p->two, CHECK_SIZE_ONLY);
diff_populate_filespec(options->repo, p->two, CHECK_SIZE_ONLY);
copied = 0;
added = p->two->size;
diff_free_filespec_data(p->two);
@ -3250,7 +3253,8 @@ static void emit_binary_diff(struct diff_options *o,
emit_binary_diff_body(o, two, one);
}
int diff_filespec_is_binary(struct diff_filespec *one)
int diff_filespec_is_binary(struct repository *r,
struct diff_filespec *one)
{
if (one->is_binary == -1) {
diff_filespec_load_driver(one);
@ -3258,7 +3262,7 @@ int diff_filespec_is_binary(struct diff_filespec *one)
one->is_binary = one->driver->binary;
else {
if (!one->data && DIFF_FILE_VALID(one))
diff_populate_filespec(one, CHECK_BINARY);
diff_populate_filespec(r, one, CHECK_BINARY);
if (one->is_binary == -1 && one->data)
one->is_binary = buffer_is_binary(one->data,
one->size);
@ -3380,13 +3384,13 @@ static void builtin_diff(const char *name_a,
if ((one->mode ^ two->mode) & S_IFMT)
goto free_ab_and_return;
if (complete_rewrite &&
(textconv_one || !diff_filespec_is_binary(one)) &&
(textconv_two || !diff_filespec_is_binary(two))) {
(textconv_one || !diff_filespec_is_binary(o->repo, one)) &&
(textconv_two || !diff_filespec_is_binary(o->repo, two))) {
emit_diff_symbol(o, DIFF_SYMBOL_HEADER,
header.buf, header.len, 0);
strbuf_reset(&header);
emit_rewrite_diff(name_a, name_b, one, two,
textconv_one, textconv_two, o);
textconv_one, textconv_two, o);
o->found_changes = 1;
goto free_ab_and_return;
}
@ -3398,8 +3402,8 @@ static void builtin_diff(const char *name_a,
strbuf_reset(&header);
goto free_ab_and_return;
} else if (!o->flags.text &&
( (!textconv_one && diff_filespec_is_binary(one)) ||
(!textconv_two && diff_filespec_is_binary(two)) )) {
( (!textconv_one && diff_filespec_is_binary(o->repo, one)) ||
(!textconv_two && diff_filespec_is_binary(o->repo, two)) )) {
struct strbuf sb = STRBUF_INIT;
if (!one->data && !two->data &&
S_ISREG(one->mode) && S_ISREG(two->mode) &&
@ -3420,7 +3424,8 @@ static void builtin_diff(const char *name_a,
strbuf_release(&sb);
goto free_ab_and_return;
}
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
if (fill_mmfile(o->repo, &mf1, one) < 0 ||
fill_mmfile(o->repo, &mf2, two) < 0)
die("unable to read files to diff");
/* Quite common confusing case */
if (mf1.size == mf2.size &&
@ -3571,20 +3576,21 @@ static void builtin_diffstat(const char *name_a, const char *name_b,
same_contents = !oidcmp(&one->oid, &two->oid);
if (diff_filespec_is_binary(one) || diff_filespec_is_binary(two)) {
if (diff_filespec_is_binary(o->repo, one) ||
diff_filespec_is_binary(o->repo, two)) {
data->is_binary = 1;
if (same_contents) {
data->added = 0;
data->deleted = 0;
} else {
data->added = diff_filespec_size(two);
data->deleted = diff_filespec_size(one);
data->added = diff_filespec_size(o->repo, two);
data->deleted = diff_filespec_size(o->repo, one);
}
}
else if (complete_rewrite) {
diff_populate_filespec(one, 0);
diff_populate_filespec(two, 0);
diff_populate_filespec(o->repo, one, 0);
diff_populate_filespec(o->repo, two, 0);
data->deleted = count_lines(one->data, one->size);
data->added = count_lines(two->data, two->size);
}
@ -3594,7 +3600,8 @@ static void builtin_diffstat(const char *name_a, const char *name_b,
xpparam_t xpp;
xdemitconf_t xecfg;
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
if (fill_mmfile(o->repo, &mf1, one) < 0 ||
fill_mmfile(o->repo, &mf2, two) < 0)
die("unable to read files to diff");
memset(&xpp, 0, sizeof(xpp));
@ -3632,7 +3639,8 @@ static void builtin_checkdiff(const char *name_a, const char *name_b,
data.ws_rule = whitespace_rule(attr_path);
data.conflict_marker_size = ll_merge_marker_size(attr_path);
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
if (fill_mmfile(o->repo, &mf1, one) < 0 ||
fill_mmfile(o->repo, &mf2, two) < 0)
die("unable to read files to diff");
/*
@ -3641,7 +3649,7 @@ static void builtin_checkdiff(const char *name_a, const char *name_b,
* introduced changes, and as long as the "new" side is text, we
* can and should check what it introduces.
*/
if (diff_filespec_is_binary(two))
if (diff_filespec_is_binary(o->repo, two))
goto free_and_return;
else {
/* Crazy xdl interfaces.. */
@ -3714,7 +3722,10 @@ void fill_filespec(struct diff_filespec *spec, const struct object_id *oid,
* the work tree has that object contents, return true, so that
* prepare_temp_file() does not have to inflate and extract.
*/
static int reuse_worktree_file(const char *name, const struct object_id *oid, int want_file)
static int reuse_worktree_file(struct index_state *istate,
const char *name,
const struct object_id *oid,
int want_file)
{
const struct cache_entry *ce;
struct stat st;
@ -3733,7 +3744,7 @@ static int reuse_worktree_file(const char *name, const struct object_id *oid, in
* by diff-cache --cached, which does read the cache before
* calling us.
*/
if (!active_cache)
if (!istate->cache)
return 0;
/* We want to avoid the working directory if our caller
@ -3752,14 +3763,14 @@ static int reuse_worktree_file(const char *name, const struct object_id *oid, in
* Similarly, if we'd have to convert the file contents anyway, that
* makes the optimization not worthwhile.
*/
if (!want_file && would_convert_to_git(&the_index, name))
if (!want_file && would_convert_to_git(istate, name))
return 0;
len = strlen(name);
pos = cache_name_pos(name, len);
pos = index_name_pos(istate, name, len);
if (pos < 0)
return 0;
ce = active_cache[pos];
ce = istate->cache[pos];
/*
* This is not the sha1 we are looking for, or
@ -3779,7 +3790,7 @@ static int reuse_worktree_file(const char *name, const struct object_id *oid, in
* If ce matches the file in the work tree, we can reuse it.
*/
if (ce_uptodate(ce) ||
(!lstat(name, &st) && !ce_match_stat(ce, &st, 0)))
(!lstat(name, &st) && !ie_match_stat(istate, ce, &st, 0)))
return 1;
return 0;
@ -3812,7 +3823,9 @@ static int diff_populate_gitlink(struct diff_filespec *s, int size_only)
* grab the data for the blob (or file) for our own in-core comparison.
* diff_filespec has data and size fields for this purpose.
*/
int diff_populate_filespec(struct diff_filespec *s, unsigned int flags)
int diff_populate_filespec(struct repository *r,
struct diff_filespec *s,
unsigned int flags)
{
int size_only = flags & CHECK_SIZE_ONLY;
int err = 0;
@ -3839,7 +3852,7 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags)
return diff_populate_gitlink(s, size_only);
if (!s->oid_valid ||
reuse_worktree_file(s->path, &s->oid, 0)) {
reuse_worktree_file(r->index, s->path, &s->oid, 0)) {
struct strbuf buf = STRBUF_INIT;
struct stat st;
int fd;
@ -3872,7 +3885,7 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags)
* point if the path requires us to run the content
* conversion.
*/
if (size_only && !would_convert_to_git(&the_index, s->path))
if (size_only && !would_convert_to_git(r->index, s->path))
return 0;
/*
@ -3899,7 +3912,7 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags)
/*
* Convert from working tree format to canonical git format
*/
if (convert_to_git(&the_index, s->path, s->data, s->size, &buf, conv_flags)) {
if (convert_to_git(r->index, s->path, s->data, s->size, &buf, conv_flags)) {
size_t size = 0;
munmap(s->data, s->size);
s->should_munmap = 0;
@ -3911,8 +3924,7 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags)
else {
enum object_type type;
if (size_only || (flags & CHECK_BINARY)) {
type = oid_object_info(the_repository, &s->oid,
&s->size);
type = oid_object_info(r, &s->oid, &s->size);
if (type < 0)
die("unable to read %s",
oid_to_hex(&s->oid));
@ -3950,7 +3962,8 @@ void diff_free_filespec_data(struct diff_filespec *s)
FREE_AND_NULL(s->cnt_data);
}
static void prep_temp_blob(const char *path, struct diff_tempfile *temp,
static void prep_temp_blob(struct index_state *istate,
const char *path, struct diff_tempfile *temp,
void *blob,
unsigned long size,
const struct object_id *oid,
@ -3968,7 +3981,7 @@ static void prep_temp_blob(const char *path, struct diff_tempfile *temp,
temp->tempfile = mks_tempfile_ts(tempfile.buf, strlen(base) + 1);
if (!temp->tempfile)
die_errno("unable to create temp-file");
if (convert_to_working_tree(&the_index, path,
if (convert_to_working_tree(istate, path,
(const char *)blob, (size_t)size, &buf)) {
blob = buf.buf;
size = buf.len;
@ -3984,8 +3997,9 @@ static void prep_temp_blob(const char *path, struct diff_tempfile *temp,
free(path_dup);
}
static struct diff_tempfile *prepare_temp_file(const char *name,
struct diff_filespec *one)
static struct diff_tempfile *prepare_temp_file(struct repository *r,
const char *name,
struct diff_filespec *one)
{
struct diff_tempfile *temp = claim_diff_tempfile();
@ -4002,7 +4016,7 @@ static struct diff_tempfile *prepare_temp_file(const char *name,
if (!S_ISGITLINK(one->mode) &&
(!one->oid_valid ||
reuse_worktree_file(name, &one->oid, 1))) {
reuse_worktree_file(r->index, name, &one->oid, 1))) {
struct stat st;
if (lstat(name, &st) < 0) {
if (errno == ENOENT)
@ -4013,7 +4027,7 @@ static struct diff_tempfile *prepare_temp_file(const char *name,
struct strbuf sb = STRBUF_INIT;
if (strbuf_readlink(&sb, name, st.st_size) < 0)
die_errno("readlink(%s)", name);
prep_temp_blob(name, temp, sb.buf, sb.len,
prep_temp_blob(r->index, name, temp, sb.buf, sb.len,
(one->oid_valid ?
&one->oid : &null_oid),
(one->oid_valid ?
@ -4038,19 +4052,21 @@ static struct diff_tempfile *prepare_temp_file(const char *name,
return temp;
}
else {
if (diff_populate_filespec(one, 0))
if (diff_populate_filespec(r, one, 0))
die("cannot read data blob for %s", one->path);
prep_temp_blob(name, temp, one->data, one->size,
prep_temp_blob(r->index, name, temp,
one->data, one->size,
&one->oid, one->mode);
}
return temp;
}
static void add_external_diff_name(struct argv_array *argv,
static void add_external_diff_name(struct repository *r,
struct argv_array *argv,
const char *name,
struct diff_filespec *df)
{
struct diff_tempfile *temp = prepare_temp_file(name, df);
struct diff_tempfile *temp = prepare_temp_file(r, name, df);
argv_array_push(argv, temp->name);
argv_array_push(argv, temp->hex);
argv_array_push(argv, temp->mode);
@ -4079,11 +4095,11 @@ static void run_external_diff(const char *pgm,
argv_array_push(&argv, name);
if (one && two) {
add_external_diff_name(&argv, name, one);
add_external_diff_name(o->repo, &argv, name, one);
if (!other)
add_external_diff_name(&argv, name, two);
add_external_diff_name(o->repo, &argv, name, two);
else {
add_external_diff_name(&argv, other, two);
add_external_diff_name(o->repo, &argv, other, two);
argv_array_push(&argv, other);
argv_array_push(&argv, xfrm_msg);
}
@ -4176,8 +4192,10 @@ static void fill_metainfo(struct strbuf *msg,
if (o->flags.binary) {
mmfile_t mf;
if ((!fill_mmfile(&mf, one) && diff_filespec_is_binary(one)) ||
(!fill_mmfile(&mf, two) && diff_filespec_is_binary(two)))
if ((!fill_mmfile(o->repo, &mf, one) &&
diff_filespec_is_binary(o->repo, one)) ||
(!fill_mmfile(o->repo, &mf, two) &&
diff_filespec_is_binary(o->repo, two)))
abbrev = hexsz;
}
strbuf_addf(msg, "%s%sindex %s..%s", line_prefix, set,
@ -4305,7 +4323,8 @@ static void run_diff(struct diff_filepair *p, struct diff_options *o)
*/
struct diff_filespec *null = alloc_filespec(two->path);
run_diff_cmd(NULL, name, other, attr_path,
one, null, &msg, o, p);
one, null, &msg,
o, p);
free(null);
strbuf_release(&msg);
@ -4329,7 +4348,8 @@ static void run_diffstat(struct diff_filepair *p, struct diff_options *o,
if (DIFF_PAIR_UNMERGED(p)) {
/* unmerged */
builtin_diffstat(p->one->path, NULL, NULL, NULL, diffstat, o, p);
builtin_diffstat(p->one->path, NULL, NULL, NULL,
diffstat, o, p);
return;
}
@ -4342,7 +4362,8 @@ static void run_diffstat(struct diff_filepair *p, struct diff_options *o,
diff_fill_oid_info(p->one);
diff_fill_oid_info(p->two);
builtin_diffstat(name, other, p->one, p->two, diffstat, o, p);
builtin_diffstat(name, other, p->one, p->two,
diffstat, o, p);
}
static void run_checkdiff(struct diff_filepair *p, struct diff_options *o)
@ -4374,6 +4395,7 @@ void diff_setup(struct diff_options *options)
memcpy(options, &default_diff_options, sizeof(*options));
options->file = stdout;
options->repo->index = &the_index;
options->abbrev = DEFAULT_ABBREV;
options->line_termination = '\n';
@ -5696,12 +5718,12 @@ static int diff_get_patch_id(struct diff_options *options, struct object_id *oid
if (diff_header_only)
continue;
if (fill_mmfile(&mf1, p->one) < 0 ||
fill_mmfile(&mf2, p->two) < 0)
if (fill_mmfile(options->repo, &mf1, p->one) < 0 ||
fill_mmfile(options->repo, &mf2, p->two) < 0)
return error("unable to read files to diff");
if (diff_filespec_is_binary(p->one) ||
diff_filespec_is_binary(p->two)) {
if (diff_filespec_is_binary(options->repo, p->one) ||
diff_filespec_is_binary(options->repo, p->two)) {
git_SHA1_Update(&ctx, oid_to_hex(&p->one->oid),
GIT_SHA1_HEXSZ);
git_SHA1_Update(&ctx, oid_to_hex(&p->two->oid),
@ -6004,19 +6026,21 @@ static void diffcore_apply_filter(struct diff_options *options)
}
/* Check whether two filespecs with the same mode and size are identical */
static int diff_filespec_is_identical(struct diff_filespec *one,
static int diff_filespec_is_identical(struct repository *r,
struct diff_filespec *one,
struct diff_filespec *two)
{
if (S_ISGITLINK(one->mode))
return 0;
if (diff_populate_filespec(one, 0))
if (diff_populate_filespec(r, one, 0))
return 0;
if (diff_populate_filespec(two, 0))
if (diff_populate_filespec(r, two, 0))
return 0;
return !memcmp(one->data, two->data, one->size);
}
static int diff_filespec_check_stat_unmatch(struct diff_filepair *p)
static int diff_filespec_check_stat_unmatch(struct repository *r,
struct diff_filepair *p)
{
if (p->done_skip_stat_unmatch)
return p->skip_stat_unmatch_result;
@ -6040,10 +6064,10 @@ static int diff_filespec_check_stat_unmatch(struct diff_filepair *p)
!DIFF_FILE_VALID(p->two) ||
(p->one->oid_valid && p->two->oid_valid) ||
(p->one->mode != p->two->mode) ||
diff_populate_filespec(p->one, CHECK_SIZE_ONLY) ||
diff_populate_filespec(p->two, CHECK_SIZE_ONLY) ||
diff_populate_filespec(r, p->one, CHECK_SIZE_ONLY) ||
diff_populate_filespec(r, p->two, CHECK_SIZE_ONLY) ||
(p->one->size != p->two->size) ||
!diff_filespec_is_identical(p->one, p->two)) /* (2) */
!diff_filespec_is_identical(r, p->one, p->two)) /* (2) */
p->skip_stat_unmatch_result = 1;
return p->skip_stat_unmatch_result;
}
@ -6058,7 +6082,7 @@ static void diffcore_skip_stat_unmatch(struct diff_options *diffopt)
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
if (diff_filespec_check_stat_unmatch(p))
if (diff_filespec_check_stat_unmatch(diffopt->repo, p))
diff_q(&outq, p);
else {
/*
@ -6100,7 +6124,8 @@ void diffcore_std(struct diff_options *options)
if (!options->found_follow) {
/* See try_to_follow_renames() in tree-diff.c */
if (options->break_opt != -1)
diffcore_break(options->break_opt);
diffcore_break(options->repo,
options->break_opt);
if (options->detect_rename)
diffcore_rename(options);
if (options->break_opt != -1)
@ -6251,7 +6276,7 @@ void diff_change(struct diff_options *options,
return;
if (options->flags.quick && options->skip_stat_unmatch &&
!diff_filespec_check_stat_unmatch(p))
!diff_filespec_check_stat_unmatch(options->repo, p))
return;
options->flags.has_changes = 1;
@ -6273,8 +6298,10 @@ struct diff_filepair *diff_unmerge(struct diff_options *options, const char *pat
return pair;
}
static char *run_textconv(const char *pgm, struct diff_filespec *spec,
size_t *outsize)
static char *run_textconv(struct repository *r,
const char *pgm,
struct diff_filespec *spec,
size_t *outsize)
{
struct diff_tempfile *temp;
const char *argv[3];
@ -6283,7 +6310,7 @@ static char *run_textconv(const char *pgm, struct diff_filespec *spec,
struct strbuf buf = STRBUF_INIT;
int err = 0;
temp = prepare_temp_file(spec->path, spec);
temp = prepare_temp_file(r, spec->path, spec);
*arg++ = pgm;
*arg++ = temp->name;
*arg = NULL;
@ -6314,6 +6341,7 @@ size_t fill_textconv(struct userdiff_driver *driver,
struct diff_filespec *df,
char **outbuf)
{
struct repository *r = the_repository;
size_t size;
if (!driver) {
@ -6321,7 +6349,7 @@ size_t fill_textconv(struct userdiff_driver *driver,
*outbuf = "";
return 0;
}
if (diff_populate_filespec(df, 0))
if (diff_populate_filespec(r, df, 0))
die("unable to read files to diff");
*outbuf = df->data;
return df->size;
@ -6338,7 +6366,7 @@ size_t fill_textconv(struct userdiff_driver *driver,
return size;
}
*outbuf = run_textconv(driver->textconv, df, &size);
*outbuf = run_textconv(r, driver->textconv, df, &size);
if (!*outbuf)
die("unable to read files to diff");