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-rw-r--r--apply.c262
1 files changed, 133 insertions, 129 deletions
diff --git a/apply.c b/apply.c
index 4992eca416..bdc008fae2 100644
--- a/apply.c
+++ b/apply.c
@@ -22,11 +22,17 @@
#include "rerere.h"
#include "apply.h"
+struct gitdiff_data {
+ struct strbuf *root;
+ int linenr;
+ int p_value;
+};
+
static void git_apply_config(void)
{
git_config_get_string_const("apply.whitespace", &apply_default_whitespace);
git_config_get_string_const("apply.ignorewhitespace", &apply_default_ignorewhitespace);
- git_config(git_default_config, NULL);
+ git_config(git_xmerge_config, NULL);
}
static int parse_whitespace_option(struct apply_state *state, const char *option)
@@ -201,40 +207,6 @@ struct fragment {
#define BINARY_DELTA_DEFLATED 1
#define BINARY_LITERAL_DEFLATED 2
-/*
- * This represents a "patch" to a file, both metainfo changes
- * such as creation/deletion, filemode and content changes represented
- * as a series of fragments.
- */
-struct patch {
- char *new_name, *old_name, *def_name;
- unsigned int old_mode, new_mode;
- int is_new, is_delete; /* -1 = unknown, 0 = false, 1 = true */
- int rejected;
- unsigned ws_rule;
- int lines_added, lines_deleted;
- int score;
- int extension_linenr; /* first line specifying delete/new/rename/copy */
- unsigned int is_toplevel_relative:1;
- unsigned int inaccurate_eof:1;
- unsigned int is_binary:1;
- unsigned int is_copy:1;
- unsigned int is_rename:1;
- unsigned int recount:1;
- unsigned int conflicted_threeway:1;
- unsigned int direct_to_threeway:1;
- unsigned int crlf_in_old:1;
- struct fragment *fragments;
- char *result;
- size_t resultsize;
- char old_oid_prefix[GIT_MAX_HEXSZ + 1];
- char new_oid_prefix[GIT_MAX_HEXSZ + 1];
- struct patch *next;
-
- /* three-way fallback result */
- struct object_id threeway_stage[3];
-};
-
static void free_fragment_list(struct fragment *list)
{
while (list) {
@@ -469,7 +441,7 @@ static char *squash_slash(char *name)
return name;
}
-static char *find_name_gnu(struct apply_state *state,
+static char *find_name_gnu(struct strbuf *root,
const char *line,
int p_value)
{
@@ -478,7 +450,7 @@ static char *find_name_gnu(struct apply_state *state,
/*
* Proposed "new-style" GNU patch/diff format; see
- * http://marc.info/?l=git&m=112927316408690&w=2
+ * https://lore.kernel.org/git/7vll0wvb2a.fsf@assigned-by-dhcp.cox.net/
*/
if (unquote_c_style(&name, line, NULL)) {
strbuf_release(&name);
@@ -495,8 +467,8 @@ static char *find_name_gnu(struct apply_state *state,
}
strbuf_remove(&name, 0, cp - name.buf);
- if (state->root.len)
- strbuf_insert(&name, 0, state->root.buf, state->root.len);
+ if (root->len)
+ strbuf_insert(&name, 0, root->buf, root->len);
return squash_slash(strbuf_detach(&name, NULL));
}
@@ -659,7 +631,7 @@ static size_t diff_timestamp_len(const char *line, size_t len)
return line + len - end;
}
-static char *find_name_common(struct apply_state *state,
+static char *find_name_common(struct strbuf *root,
const char *line,
const char *def,
int p_value,
@@ -702,30 +674,30 @@ static char *find_name_common(struct apply_state *state,
return squash_slash(xstrdup(def));
}
- if (state->root.len) {
- char *ret = xstrfmt("%s%.*s", state->root.buf, len, start);
+ if (root->len) {
+ char *ret = xstrfmt("%s%.*s", root->buf, len, start);
return squash_slash(ret);
}
return squash_slash(xmemdupz(start, len));
}
-static char *find_name(struct apply_state *state,
+static char *find_name(struct strbuf *root,
const char *line,
char *def,
int p_value,
int terminate)
{
if (*line == '"') {
- char *name = find_name_gnu(state, line, p_value);
+ char *name = find_name_gnu(root, line, p_value);
if (name)
return name;
}
- return find_name_common(state, line, def, p_value, NULL, terminate);
+ return find_name_common(root, line, def, p_value, NULL, terminate);
}
-static char *find_name_traditional(struct apply_state *state,
+static char *find_name_traditional(struct strbuf *root,
const char *line,
char *def,
int p_value)
@@ -734,7 +706,7 @@ static char *find_name_traditional(struct apply_state *state,
size_t date_len;
if (*line == '"') {
- char *name = find_name_gnu(state, line, p_value);
+ char *name = find_name_gnu(root, line, p_value);
if (name)
return name;
}
@@ -742,10 +714,10 @@ static char *find_name_traditional(struct apply_state *state,
len = strchrnul(line, '\n') - line;
date_len = diff_timestamp_len(line, len);
if (!date_len)
- return find_name_common(state, line, def, p_value, NULL, TERM_TAB);
+ return find_name_common(root, line, def, p_value, NULL, TERM_TAB);
len -= date_len;
- return find_name_common(state, line, def, p_value, line + len, 0);
+ return find_name_common(root, line, def, p_value, line + len, 0);
}
/*
@@ -759,7 +731,7 @@ static int guess_p_value(struct apply_state *state, const char *nameline)
if (is_dev_null(nameline))
return -1;
- name = find_name_traditional(state, nameline, NULL, 0);
+ name = find_name_traditional(&state->root, nameline, NULL, 0);
if (!name)
return -1;
cp = strchr(name, '/');
@@ -883,17 +855,17 @@ static int parse_traditional_patch(struct apply_state *state,
if (is_dev_null(first)) {
patch->is_new = 1;
patch->is_delete = 0;
- name = find_name_traditional(state, second, NULL, state->p_value);
+ name = find_name_traditional(&state->root, second, NULL, state->p_value);
patch->new_name = name;
} else if (is_dev_null(second)) {
patch->is_new = 0;
patch->is_delete = 1;
- name = find_name_traditional(state, first, NULL, state->p_value);
+ name = find_name_traditional(&state->root, first, NULL, state->p_value);
patch->old_name = name;
} else {
char *first_name;
- first_name = find_name_traditional(state, first, NULL, state->p_value);
- name = find_name_traditional(state, second, first_name, state->p_value);
+ first_name = find_name_traditional(&state->root, first, NULL, state->p_value);
+ name = find_name_traditional(&state->root, second, first_name, state->p_value);
free(first_name);
if (has_epoch_timestamp(first)) {
patch->is_new = 1;
@@ -914,7 +886,7 @@ static int parse_traditional_patch(struct apply_state *state,
return 0;
}
-static int gitdiff_hdrend(struct apply_state *state,
+static int gitdiff_hdrend(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
@@ -933,14 +905,14 @@ static int gitdiff_hdrend(struct apply_state *state,
#define DIFF_OLD_NAME 0
#define DIFF_NEW_NAME 1
-static int gitdiff_verify_name(struct apply_state *state,
+static int gitdiff_verify_name(struct gitdiff_data *state,
const char *line,
int isnull,
char **name,
int side)
{
if (!*name && !isnull) {
- *name = find_name(state, line, NULL, state->p_value, TERM_TAB);
+ *name = find_name(state->root, line, NULL, state->p_value, TERM_TAB);
return 0;
}
@@ -949,7 +921,7 @@ static int gitdiff_verify_name(struct apply_state *state,
if (isnull)
return error(_("git apply: bad git-diff - expected /dev/null, got %s on line %d"),
*name, state->linenr);
- another = find_name(state, line, NULL, state->p_value, TERM_TAB);
+ another = find_name(state->root, line, NULL, state->p_value, TERM_TAB);
if (!another || strcmp(another, *name)) {
free(another);
return error((side == DIFF_NEW_NAME) ?
@@ -965,7 +937,7 @@ static int gitdiff_verify_name(struct apply_state *state,
return 0;
}
-static int gitdiff_oldname(struct apply_state *state,
+static int gitdiff_oldname(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
@@ -974,7 +946,7 @@ static int gitdiff_oldname(struct apply_state *state,
DIFF_OLD_NAME);
}
-static int gitdiff_newname(struct apply_state *state,
+static int gitdiff_newname(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
@@ -992,21 +964,21 @@ static int parse_mode_line(const char *line, int linenr, unsigned int *mode)
return 0;
}
-static int gitdiff_oldmode(struct apply_state *state,
+static int gitdiff_oldmode(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
return parse_mode_line(line, state->linenr, &patch->old_mode);
}
-static int gitdiff_newmode(struct apply_state *state,
+static int gitdiff_newmode(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
return parse_mode_line(line, state->linenr, &patch->new_mode);
}
-static int gitdiff_delete(struct apply_state *state,
+static int gitdiff_delete(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
@@ -1016,7 +988,7 @@ static int gitdiff_delete(struct apply_state *state,
return gitdiff_oldmode(state, line, patch);
}
-static int gitdiff_newfile(struct apply_state *state,
+static int gitdiff_newfile(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
@@ -1026,47 +998,47 @@ static int gitdiff_newfile(struct apply_state *state,
return gitdiff_newmode(state, line, patch);
}
-static int gitdiff_copysrc(struct apply_state *state,
+static int gitdiff_copysrc(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
patch->is_copy = 1;
free(patch->old_name);
- patch->old_name = find_name(state, line, NULL, state->p_value ? state->p_value - 1 : 0, 0);
+ patch->old_name = find_name(state->root, line, NULL, state->p_value ? state->p_value - 1 : 0, 0);
return 0;
}
-static int gitdiff_copydst(struct apply_state *state,
+static int gitdiff_copydst(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
patch->is_copy = 1;
free(patch->new_name);
- patch->new_name = find_name(state, line, NULL, state->p_value ? state->p_value - 1 : 0, 0);
+ patch->new_name = find_name(state->root, line, NULL, state->p_value ? state->p_value - 1 : 0, 0);
return 0;
}
-static int gitdiff_renamesrc(struct apply_state *state,
+static int gitdiff_renamesrc(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
patch->is_rename = 1;
free(patch->old_name);
- patch->old_name = find_name(state, line, NULL, state->p_value ? state->p_value - 1 : 0, 0);
+ patch->old_name = find_name(state->root, line, NULL, state->p_value ? state->p_value - 1 : 0, 0);
return 0;
}
-static int gitdiff_renamedst(struct apply_state *state,
+static int gitdiff_renamedst(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
patch->is_rename = 1;
free(patch->new_name);
- patch->new_name = find_name(state, line, NULL, state->p_value ? state->p_value - 1 : 0, 0);
+ patch->new_name = find_name(state->root, line, NULL, state->p_value ? state->p_value - 1 : 0, 0);
return 0;
}
-static int gitdiff_similarity(struct apply_state *state,
+static int gitdiff_similarity(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
@@ -1076,7 +1048,7 @@ static int gitdiff_similarity(struct apply_state *state,
return 0;
}
-static int gitdiff_dissimilarity(struct apply_state *state,
+static int gitdiff_dissimilarity(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
@@ -1086,7 +1058,7 @@ static int gitdiff_dissimilarity(struct apply_state *state,
return 0;
}
-static int gitdiff_index(struct apply_state *state,
+static int gitdiff_index(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
@@ -1126,7 +1098,7 @@ static int gitdiff_index(struct apply_state *state,
* This is normal for a diff that doesn't change anything: we'll fall through
* into the next diff. Tell the parser to break out.
*/
-static int gitdiff_unrecognized(struct apply_state *state,
+static int gitdiff_unrecognized(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
@@ -1137,17 +1109,17 @@ static int gitdiff_unrecognized(struct apply_state *state,
* Skip p_value leading components from "line"; as we do not accept
* absolute paths, return NULL in that case.
*/
-static const char *skip_tree_prefix(struct apply_state *state,
+static const char *skip_tree_prefix(int p_value,
const char *line,
int llen)
{
int nslash;
int i;
- if (!state->p_value)
+ if (!p_value)
return (llen && line[0] == '/') ? NULL : line;
- nslash = state->p_value;
+ nslash = p_value;
for (i = 0; i < llen; i++) {
int ch = line[i];
if (ch == '/' && --nslash <= 0)
@@ -1164,7 +1136,7 @@ static const char *skip_tree_prefix(struct apply_state *state,
* creation or deletion of an empty file. In any of these cases,
* both sides are the same name under a/ and b/ respectively.
*/
-static char *git_header_name(struct apply_state *state,
+static char *git_header_name(int p_value,
const char *line,
int llen)
{
@@ -1184,7 +1156,7 @@ static char *git_header_name(struct apply_state *state,
goto free_and_fail1;
/* strip the a/b prefix including trailing slash */
- cp = skip_tree_prefix(state, first.buf, first.len);
+ cp = skip_tree_prefix(p_value, first.buf, first.len);
if (!cp)
goto free_and_fail1;
strbuf_remove(&first, 0, cp - first.buf);
@@ -1201,7 +1173,7 @@ static char *git_header_name(struct apply_state *state,
if (*second == '"') {
if (unquote_c_style(&sp, second, NULL))
goto free_and_fail1;
- cp = skip_tree_prefix(state, sp.buf, sp.len);
+ cp = skip_tree_prefix(p_value, sp.buf, sp.len);
if (!cp)
goto free_and_fail1;
/* They must match, otherwise ignore */
@@ -1212,7 +1184,7 @@ static char *git_header_name(struct apply_state *state,
}
/* unquoted second */
- cp = skip_tree_prefix(state, second, line + llen - second);
+ cp = skip_tree_prefix(p_value, second, line + llen - second);
if (!cp)
goto free_and_fail1;
if (line + llen - cp != first.len ||
@@ -1227,7 +1199,7 @@ static char *git_header_name(struct apply_state *state,
}
/* unquoted first name */
- name = skip_tree_prefix(state, line, llen);
+ name = skip_tree_prefix(p_value, line, llen);
if (!name)
return NULL;
@@ -1243,7 +1215,7 @@ static char *git_header_name(struct apply_state *state,
if (unquote_c_style(&sp, second, NULL))
goto free_and_fail2;
- np = skip_tree_prefix(state, sp.buf, sp.len);
+ np = skip_tree_prefix(p_value, sp.buf, sp.len);
if (!np)
goto free_and_fail2;
@@ -1287,7 +1259,7 @@ static char *git_header_name(struct apply_state *state,
*/
if (!name[len + 1])
return NULL; /* no postimage name */
- second = skip_tree_prefix(state, name + len + 1,
+ second = skip_tree_prefix(p_value, name + len + 1,
line_len - (len + 1));
if (!second)
return NULL;
@@ -1302,26 +1274,28 @@ static char *git_header_name(struct apply_state *state,
}
}
-static int check_header_line(struct apply_state *state, struct patch *patch)
+static int check_header_line(int linenr, struct patch *patch)
{
int extensions = (patch->is_delete == 1) + (patch->is_new == 1) +
(patch->is_rename == 1) + (patch->is_copy == 1);
if (extensions > 1)
return error(_("inconsistent header lines %d and %d"),
- patch->extension_linenr, state->linenr);
+ patch->extension_linenr, linenr);
if (extensions && !patch->extension_linenr)
- patch->extension_linenr = state->linenr;
+ patch->extension_linenr = linenr;
return 0;
}
-/* Verify that we recognize the lines following a git header */
-static int parse_git_header(struct apply_state *state,
- const char *line,
- int len,
- unsigned int size,
- struct patch *patch)
+int parse_git_diff_header(struct strbuf *root,
+ int *linenr,
+ int p_value,
+ const char *line,
+ int len,
+ unsigned int size,
+ struct patch *patch)
{
unsigned long offset;
+ struct gitdiff_data parse_hdr_state;
/* A git diff has explicit new/delete information, so we don't guess */
patch->is_new = 0;
@@ -1333,20 +1307,24 @@ static int parse_git_header(struct apply_state *state,
* or removing or adding empty files), so we get
* the default name from the header.
*/
- patch->def_name = git_header_name(state, line, len);
- if (patch->def_name && state->root.len) {
- char *s = xstrfmt("%s%s", state->root.buf, patch->def_name);
+ patch->def_name = git_header_name(p_value, line, len);
+ if (patch->def_name && root->len) {
+ char *s = xstrfmt("%s%s", root->buf, patch->def_name);
free(patch->def_name);
patch->def_name = s;
}
line += len;
size -= len;
- state->linenr++;
- for (offset = len ; size > 0 ; offset += len, size -= len, line += len, state->linenr++) {
+ (*linenr)++;
+ parse_hdr_state.root = root;
+ parse_hdr_state.linenr = *linenr;
+ parse_hdr_state.p_value = p_value;
+
+ for (offset = len ; size > 0 ; offset += len, size -= len, line += len, (*linenr)++) {
static const struct opentry {
const char *str;
- int (*fn)(struct apply_state *, const char *, struct patch *);
+ int (*fn)(struct gitdiff_data *, const char *, struct patch *);
} optable[] = {
{ "@@ -", gitdiff_hdrend },
{ "--- ", gitdiff_oldname },
@@ -1377,17 +1355,38 @@ static int parse_git_header(struct apply_state *state,
int res;
if (len < oplen || memcmp(p->str, line, oplen))
continue;
- res = p->fn(state, line + oplen, patch);
+ res = p->fn(&parse_hdr_state, line + oplen, patch);
if (res < 0)
return -1;
- if (check_header_line(state, patch))
+ if (check_header_line(*linenr, patch))
return -1;
if (res > 0)
- return offset;
+ goto done;
break;
}
}
+done:
+ if (!patch->old_name && !patch->new_name) {
+ if (!patch->def_name) {
+ error(Q_("git diff header lacks filename information when removing "
+ "%d leading pathname component (line %d)",
+ "git diff header lacks filename information when removing "
+ "%d leading pathname components (line %d)",
+ parse_hdr_state.p_value),
+ parse_hdr_state.p_value, *linenr);
+ return -128;
+ }
+ patch->old_name = xstrdup(patch->def_name);
+ patch->new_name = xstrdup(patch->def_name);
+ }
+ if ((!patch->new_name && !patch->is_delete) ||
+ (!patch->old_name && !patch->is_new)) {
+ error(_("git diff header lacks filename information "
+ "(line %d)"), *linenr);
+ return -128;
+ }
+ patch->is_toplevel_relative = 1;
return offset;
}
@@ -1561,31 +1560,13 @@ static int find_header(struct apply_state *state,
* or mode change, so we handle that specially
*/
if (!memcmp("diff --git ", line, 11)) {
- int git_hdr_len = parse_git_header(state, line, len, size, patch);
+ int git_hdr_len = parse_git_diff_header(&state->root, &state->linenr,
+ state->p_value, line, len,
+ size, patch);
if (git_hdr_len < 0)
return -128;
if (git_hdr_len <= len)
continue;
- if (!patch->old_name && !patch->new_name) {
- if (!patch->def_name) {
- error(Q_("git diff header lacks filename information when removing "
- "%d leading pathname component (line %d)",
- "git diff header lacks filename information when removing "
- "%d leading pathname components (line %d)",
- state->p_value),
- state->p_value, state->linenr);
- return -128;
- }
- patch->old_name = xstrdup(patch->def_name);
- patch->new_name = xstrdup(patch->def_name);
- }
- if ((!patch->new_name && !patch->is_delete) ||
- (!patch->old_name && !patch->is_new)) {
- error(_("git diff header lacks filename information "
- "(line %d)"), state->linenr);
- return -128;
- }
- patch->is_toplevel_relative = 1;
*hdrsize = git_hdr_len;
return offset;
}
@@ -2681,6 +2662,16 @@ static int find_pos(struct apply_state *state,
int backwards_lno, forwards_lno, current_lno;
/*
+ * When running with --allow-overlap, it is possible that a hunk is
+ * seen that pretends to start at the beginning (but no longer does),
+ * and that *still* needs to match the end. So trust `match_end` more
+ * than `match_beginning`.
+ */
+ if (state->allow_overlap && match_beginning && match_end &&
+ img->nr - preimage->nr != 0)
+ match_beginning = 0;
+
+ /*
* If match_beginning or match_end is specified, there is no
* point starting from a wrong line that will never match and
* wander around and wait for a match at the specified end.
@@ -3166,7 +3157,8 @@ static int apply_binary(struct apply_state *state,
* See if the old one matches what the patch
* applies to.
*/
- hash_object_file(img->buf, img->len, blob_type, &oid);
+ hash_object_file(the_hash_algo, img->buf, img->len, blob_type,
+ &oid);
if (strcmp(oid_to_hex(&oid), patch->old_oid_prefix))
return error(_("the patch applies to '%s' (%s), "
"which does not match the "
@@ -3211,7 +3203,8 @@ static int apply_binary(struct apply_state *state,
name);
/* verify that the result matches */
- hash_object_file(img->buf, img->len, blob_type, &oid);
+ hash_object_file(the_hash_algo, img->buf, img->len, blob_type,
+ &oid);
if (strcmp(oid_to_hex(&oid), patch->new_oid_prefix))
return error(_("binary patch to '%s' creates incorrect result (expecting %s, got %s)"),
name, patch->new_oid_prefix, oid_to_hex(&oid));
@@ -4202,8 +4195,8 @@ static void show_rename_copy(struct patch *p)
old_name = slash_old + 1;
new_name = slash_new + 1;
}
- /* p->old_name thru old_name is the common prefix, and old_name and new_name
- * through the end of names are renames
+ /* p->old_name through old_name is the common prefix, and old_name and
+ * new_name through the end of names are renames
*/
if (old_name != p->old_name)
printf(" %s %.*s{%s => %s} (%d%%)\n", renamecopy,
@@ -4663,6 +4656,7 @@ static int apply_patch(struct apply_state *state,
struct patch *list = NULL, **listp = &list;
int skipped_patch = 0;
int res = 0;
+ int flush_attributes = 0;
state->patch_input_file = filename;
if (read_patch_file(&buf, fd) < 0)
@@ -4690,6 +4684,14 @@ static int apply_patch(struct apply_state *state,
patch_stats(state, patch);
*listp = patch;
listp = &patch->next;
+
+ if ((patch->new_name &&
+ ends_with_path_components(patch->new_name,
+ GITATTRIBUTES_FILE)) ||
+ (patch->old_name &&
+ ends_with_path_components(patch->old_name,
+ GITATTRIBUTES_FILE)))
+ flush_attributes = 1;
}
else {
if (state->apply_verbosity > verbosity_normal)
@@ -4766,6 +4768,8 @@ static int apply_patch(struct apply_state *state,
if (state->summary && state->apply_verbosity > verbosity_silent)
summary_patch_list(list);
+ if (flush_attributes)
+ reset_parsed_attributes();
end:
free_patch_list(list);
strbuf_release(&buf);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 10:34:53 +0000