#include "dir.h"
#include "diff.h"
#include "parse-options.h"
+#include "xdiff-interface.h"
+#include "ll-merge.h"
+#include "rerere.h"
/*
* --check turns on checking that the working tree matches the
static int line_termination = '\n';
static unsigned int p_context = UINT_MAX;
static const char * const apply_usage[] = {
- "git apply [options] [<patch>...]",
+ N_("git apply [options] [<patch>...]"),
NULL
};
int is_new, is_delete; /* -1 = unknown, 0 = false, 1 = true */
int rejected;
unsigned ws_rule;
- unsigned long deflate_origlen;
int lines_added, lines_deleted;
int score;
unsigned int is_toplevel_relative: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;
struct fragment *fragments;
char *result;
size_t resultsize;
char old_sha1_prefix[41];
char new_sha1_prefix[41];
struct patch *next;
+
+ /* three-way fallback result */
+ unsigned char threeway_stage[3][20];
};
static void free_fragment_list(struct fragment *list)
* their names against any previous information, just
* to make sure..
*/
-static char *gitdiff_verify_name(const char *line, int isnull, char *orig_name, const char *oldnew)
+#define DIFF_OLD_NAME 0
+#define DIFF_NEW_NAME 1
+
+static char *gitdiff_verify_name(const char *line, int isnull, char *orig_name, int side)
{
if (!orig_name && !isnull)
return find_name(line, NULL, p_value, TERM_TAB);
die(_("git apply: bad git-diff - expected /dev/null, got %s on line %d"), name, linenr);
another = find_name(line, NULL, p_value, TERM_TAB);
if (!another || memcmp(another, name, len + 1))
- die(_("git apply: bad git-diff - inconsistent %s filename on line %d"), oldnew, linenr);
+ die((side == DIFF_NEW_NAME) ?
+ _("git apply: bad git-diff - inconsistent new filename on line %d") :
+ _("git apply: bad git-diff - inconsistent old filename on line %d"), linenr);
free(another);
return orig_name;
}
static int gitdiff_oldname(const char *line, struct patch *patch)
{
char *orig = patch->old_name;
- patch->old_name = gitdiff_verify_name(line, patch->is_new, patch->old_name, "old");
+ patch->old_name = gitdiff_verify_name(line, patch->is_new, patch->old_name,
+ DIFF_OLD_NAME);
if (orig != patch->old_name)
free(orig);
return 0;
static int gitdiff_newname(const char *line, struct patch *patch)
{
char *orig = patch->new_name;
- patch->new_name = gitdiff_verify_name(line, patch->is_delete, patch->new_name, "new");
+ patch->new_name = gitdiff_verify_name(line, patch->is_delete, patch->new_name,
+ DIFF_NEW_NAME);
if (orig != patch->new_name)
free(orig);
return 0;
return previous;
}
+static int verify_index_match(struct cache_entry *ce, struct stat *st)
+{
+ if (S_ISGITLINK(ce->ce_mode)) {
+ if (!S_ISDIR(st->st_mode))
+ return -1;
+ return 0;
+ }
+ return ce_match_stat(ce, st, CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE);
+}
+
#define SUBMODULE_PATCH_WITHOUT_INDEX 1
static int load_patch_target(struct strbuf *buf,
const unsigned char *ours,
const unsigned char *theirs)
{
- return -1; /* for now */
+ mmfile_t base_file, our_file, their_file;
+ mmbuffer_t result = { NULL };
+ int status;
+
+ read_mmblob(&base_file, base);
+ read_mmblob(&our_file, ours);
+ read_mmblob(&their_file, theirs);
+ status = ll_merge(&result, path,
+ &base_file, "base",
+ &our_file, "ours",
+ &their_file, "theirs", NULL);
+ free(base_file.ptr);
+ free(our_file.ptr);
+ free(their_file.ptr);
+ if (status < 0 || !result.ptr) {
+ free(result.ptr);
+ return -1;
+ }
+ clear_image(image);
+ image->buf = result.ptr;
+ image->len = result.size;
+
+ return status;
+}
+
+/*
+ * When directly falling back to add/add three-way merge, we read from
+ * the current contents of the new_name. In no cases other than that
+ * this function will be called.
+ */
+static int load_current(struct image *image, struct patch *patch)
+{
+ struct strbuf buf = STRBUF_INIT;
+ int status, pos;
+ size_t len;
+ char *img;
+ struct stat st;
+ struct cache_entry *ce;
+ char *name = patch->new_name;
+ unsigned mode = patch->new_mode;
+
+ if (!patch->is_new)
+ die("BUG: patch to %s is not a creation", patch->old_name);
+
+ pos = cache_name_pos(name, strlen(name));
+ if (pos < 0)
+ return error(_("%s: does not exist in index"), name);
+ ce = active_cache[pos];
+ if (lstat(name, &st)) {
+ if (errno != ENOENT)
+ return error(_("%s: %s"), name, strerror(errno));
+ if (checkout_target(ce, &st))
+ return -1;
+ }
+ if (verify_index_match(ce, &st))
+ return error(_("%s: does not match index"), name);
+
+ status = load_patch_target(&buf, ce, &st, name, mode);
+ if (status < 0)
+ return status;
+ else if (status)
+ return -1;
+ img = strbuf_detach(&buf, &len);
+ prepare_image(image, img, len, !patch->is_binary);
+ return 0;
}
static int try_threeway(struct image *image, struct patch *patch,
unsigned char pre_sha1[20], post_sha1[20], our_sha1[20];
struct strbuf buf = STRBUF_INIT;
size_t len;
+ int status;
char *img;
struct image tmp_image;
/* No point falling back to 3-way merge in these cases */
- if (patch->is_new || patch->is_delete ||
+ if (patch->is_delete ||
S_ISGITLINK(patch->old_mode) || S_ISGITLINK(patch->new_mode))
return -1;
/* Preimage the patch was prepared for */
- if (get_sha1(patch->old_sha1_prefix, pre_sha1) ||
- read_blob_object(&buf, pre_sha1, patch->old_mode))
+ if (patch->is_new)
+ write_sha1_file("", 0, blob_type, pre_sha1);
+ else if (get_sha1(patch->old_sha1_prefix, pre_sha1) ||
+ read_blob_object(&buf, pre_sha1, patch->old_mode))
return error("repository lacks the necessary blob to fall back on 3-way merge.");
+
+ fprintf(stderr, "Falling back to three-way merge...\n");
+
img = strbuf_detach(&buf, &len);
prepare_image(&tmp_image, img, len, 1);
/* Apply the patch to get the post image */
clear_image(&tmp_image);
/* our_sha1[] is ours */
- if (load_preimage(&tmp_image, patch, st, ce))
- return error("cannot read the current contents of '%s'",
- patch->old_name);
+ if (patch->is_new) {
+ if (load_current(&tmp_image, patch))
+ return error("cannot read the current contents of '%s'",
+ patch->new_name);
+ } else {
+ if (load_preimage(&tmp_image, patch, st, ce))
+ return error("cannot read the current contents of '%s'",
+ patch->old_name);
+ }
write_sha1_file(tmp_image.buf, tmp_image.len, blob_type, our_sha1);
clear_image(&tmp_image);
/* in-core three-way merge between post and our using pre as base */
- return three_way_merge(image,
- patch->new_name, pre_sha1, our_sha1, post_sha1);
+ status = three_way_merge(image, patch->new_name,
+ pre_sha1, our_sha1, post_sha1);
+ if (status < 0) {
+ fprintf(stderr, "Failed to fall back on three-way merge...\n");
+ return status;
+ }
+
+ if (status) {
+ patch->conflicted_threeway = 1;
+ if (patch->is_new)
+ hashclr(patch->threeway_stage[0]);
+ else
+ hashcpy(patch->threeway_stage[0], pre_sha1);
+ hashcpy(patch->threeway_stage[1], our_sha1);
+ hashcpy(patch->threeway_stage[2], post_sha1);
+ fprintf(stderr, "Applied patch to '%s' with conflicts.\n", patch->new_name);
+ } else {
+ fprintf(stderr, "Applied patch to '%s' cleanly.\n", patch->new_name);
+ }
+ return 0;
}
static int apply_data(struct patch *patch, struct stat *st, struct cache_entry *ce)
if (load_preimage(&image, patch, st, ce) < 0)
return -1;
- if (apply_fragments(&image, patch) < 0) {
+ if (patch->direct_to_threeway ||
+ apply_fragments(&image, patch) < 0) {
/* Note: with --reject, apply_fragments() returns 0 */
if (!threeway || try_threeway(&image, patch, st, ce) < 0)
return -1;
return 0;
}
-static int verify_index_match(struct cache_entry *ce, struct stat *st)
-{
- if (S_ISGITLINK(ce->ce_mode)) {
- if (!S_ISDIR(st->st_mode))
- return -1;
- return 0;
- }
- return ce_match_stat(ce, st, CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE);
-}
-
/*
* If "patch" that we are looking at modifies or deletes what we have,
* we would want it not to lose any local modification we have, either
((0 < patch->is_new) | (0 < patch->is_rename) | patch->is_copy)) {
int err = check_to_create(new_name, ok_if_exists);
- switch (err) {
+ if (err && threeway) {
+ patch->direct_to_threeway = 1;
+ } else switch (err) {
case 0:
break; /* happy */
case EXISTS_IN_INDEX:
int same = !strcmp(old_name, new_name);
if (!patch->new_mode)
patch->new_mode = patch->old_mode;
- if ((patch->old_mode ^ patch->new_mode) & S_IFMT)
- return error(_("new mode (%o) of %s does not match old mode (%o)%s%s"),
- patch->new_mode, new_name, patch->old_mode,
- same ? "" : " of ", same ? "" : old_name);
+ if ((patch->old_mode ^ patch->new_mode) & S_IFMT) {
+ if (same)
+ return error(_("new mode (%o) of %s does not "
+ "match old mode (%o)"),
+ patch->new_mode, new_name,
+ patch->old_mode);
+ else
+ return error(_("new mode (%o) of %s does not "
+ "match old mode (%o) of %s"),
+ patch->new_mode, new_name,
+ patch->old_mode, old_name);
+ }
}
if (apply_data(patch, &st, ce) < 0)
name = patch->old_name ? patch->old_name : patch->new_name;
if (0 < patch->is_new)
continue;
- else if (get_sha1(patch->old_sha1_prefix, sha1))
+ else if (get_sha1_blob(patch->old_sha1_prefix, sha1))
/* git diff has no index line for mode/type changes */
if (!patch->lines_added && !patch->lines_deleted) {
if (get_current_sha1(patch->old_name, sha1))
ce = xcalloc(1, ce_size);
memcpy(ce->name, path, namelen);
ce->ce_mode = create_ce_mode(mode);
- ce->ce_flags = namelen;
+ ce->ce_flags = create_ce_flags(0);
+ ce->ce_namelen = namelen;
if (S_ISGITLINK(mode)) {
const char *s = buf;
die_errno(_("unable to write file '%s' mode %o"), path, mode);
}
+static void add_conflicted_stages_file(struct patch *patch)
+{
+ int stage, namelen;
+ unsigned ce_size, mode;
+ struct cache_entry *ce;
+
+ if (!update_index)
+ return;
+ namelen = strlen(patch->new_name);
+ ce_size = cache_entry_size(namelen);
+ mode = patch->new_mode ? patch->new_mode : (S_IFREG | 0644);
+
+ remove_file_from_cache(patch->new_name);
+ for (stage = 1; stage < 4; stage++) {
+ if (is_null_sha1(patch->threeway_stage[stage - 1]))
+ continue;
+ ce = xcalloc(1, ce_size);
+ memcpy(ce->name, patch->new_name, namelen);
+ ce->ce_mode = create_ce_mode(mode);
+ ce->ce_flags = create_ce_flags(stage);
+ ce->ce_namelen = namelen;
+ hashcpy(ce->sha1, patch->threeway_stage[stage - 1]);
+ if (add_cache_entry(ce, ADD_CACHE_OK_TO_ADD) < 0)
+ die(_("unable to add cache entry for %s"), patch->new_name);
+ }
+}
+
static void create_file(struct patch *patch)
{
char *path = patch->new_name;
if (!mode)
mode = S_IFREG | 0644;
create_one_file(path, mode, buf, size);
- add_index_file(path, mode, buf, size);
+
+ if (patch->conflicted_threeway)
+ add_conflicted_stages_file(patch);
+ else
+ add_index_file(path, mode, buf, size);
}
/* phase zero is to remove, phase one is to create */
int phase;
int errs = 0;
struct patch *l;
+ struct string_list cpath = STRING_LIST_INIT_DUP;
for (phase = 0; phase < 2; phase++) {
l = list;
errs = 1;
else {
write_out_one_result(l, phase);
- if (phase == 1 && write_out_one_reject(l))
- errs = 1;
+ if (phase == 1) {
+ if (write_out_one_reject(l))
+ errs = 1;
+ if (l->conflicted_threeway) {
+ string_list_append(&cpath, l->new_name);
+ errs = 1;
+ }
+ }
}
l = l->next;
}
}
+
+ if (cpath.nr) {
+ struct string_list_item *item;
+
+ sort_string_list(&cpath);
+ for_each_string_list_item(item, &cpath)
+ fprintf(stderr, "U %s\n", item->string);
+ string_list_clear(&cpath, 0);
+
+ rerere(0);
+ }
+
return errs;
}
!apply_with_reject)
exit(1);
- if (apply && write_out_results(list))
- exit(1);
+ if (apply && write_out_results(list)) {
+ if (apply_with_reject)
+ exit(1);
+ /* with --3way, we still need to write the index out */
+ return 1;
+ }
if (fake_ancestor)
build_fake_ancestor(list, fake_ancestor);
const char *whitespace_option = NULL;
struct option builtin_apply_options[] = {
- { OPTION_CALLBACK, 0, "exclude", NULL, "path",
- "don't apply changes matching the given path",
+ { OPTION_CALLBACK, 0, "exclude", NULL, N_("path"),
+ N_("don't apply changes matching the given path"),
0, option_parse_exclude },
- { OPTION_CALLBACK, 0, "include", NULL, "path",
- "apply changes matching the given path",
+ { OPTION_CALLBACK, 0, "include", NULL, N_("path"),
+ N_("apply changes matching the given path"),
0, option_parse_include },
- { OPTION_CALLBACK, 'p', NULL, NULL, "num",
- "remove <num> leading slashes from traditional diff paths",
+ { OPTION_CALLBACK, 'p', NULL, NULL, N_("num"),
+ N_("remove <num> leading slashes from traditional diff paths"),
0, option_parse_p },
OPT_BOOLEAN(0, "no-add", &no_add,
- "ignore additions made by the patch"),
+ N_("ignore additions made by the patch")),
OPT_BOOLEAN(0, "stat", &diffstat,
- "instead of applying the patch, output diffstat for the input"),
+ N_("instead of applying the patch, output diffstat for the input")),
OPT_NOOP_NOARG(0, "allow-binary-replacement"),
OPT_NOOP_NOARG(0, "binary"),
OPT_BOOLEAN(0, "numstat", &numstat,
- "shows number of added and deleted lines in decimal notation"),
+ N_("shows number of added and deleted lines in decimal notation")),
OPT_BOOLEAN(0, "summary", &summary,
- "instead of applying the patch, output a summary for the input"),
+ N_("instead of applying the patch, output a summary for the input")),
OPT_BOOLEAN(0, "check", &check,
- "instead of applying the patch, see if the patch is applicable"),
+ N_("instead of applying the patch, see if the patch is applicable")),
OPT_BOOLEAN(0, "index", &check_index,
- "make sure the patch is applicable to the current index"),
+ N_("make sure the patch is applicable to the current index")),
OPT_BOOLEAN(0, "cached", &cached,
- "apply a patch without touching the working tree"),
+ N_("apply a patch without touching the working tree")),
OPT_BOOLEAN(0, "apply", &force_apply,
- "also apply the patch (use with --stat/--summary/--check)"),
+ N_("also apply the patch (use with --stat/--summary/--check)")),
OPT_BOOL('3', "3way", &threeway,
- "attempt three-way merge if a patch does not apply"),
+ N_( "attempt three-way merge if a patch does not apply")),
OPT_FILENAME(0, "build-fake-ancestor", &fake_ancestor,
- "build a temporary index based on embedded index information"),
+ N_("build a temporary index based on embedded index information")),
{ OPTION_CALLBACK, 'z', NULL, NULL, NULL,
- "paths are separated with NUL character",
+ N_("paths are separated with NUL character"),
PARSE_OPT_NOARG, option_parse_z },
OPT_INTEGER('C', NULL, &p_context,
- "ensure at least <n> lines of context match"),
- { OPTION_CALLBACK, 0, "whitespace", &whitespace_option, "action",
- "detect new or modified lines that have whitespace errors",
+ N_("ensure at least <n> lines of context match")),
+ { OPTION_CALLBACK, 0, "whitespace", &whitespace_option, N_("action"),
+ N_("detect new or modified lines that have whitespace errors"),
0, option_parse_whitespace },
{ OPTION_CALLBACK, 0, "ignore-space-change", NULL, NULL,
- "ignore changes in whitespace when finding context",
+ N_("ignore changes in whitespace when finding context"),
PARSE_OPT_NOARG, option_parse_space_change },
{ OPTION_CALLBACK, 0, "ignore-whitespace", NULL, NULL,
- "ignore changes in whitespace when finding context",
+ N_("ignore changes in whitespace when finding context"),
PARSE_OPT_NOARG, option_parse_space_change },
OPT_BOOLEAN('R', "reverse", &apply_in_reverse,
- "apply the patch in reverse"),
+ N_("apply the patch in reverse")),
OPT_BOOLEAN(0, "unidiff-zero", &unidiff_zero,
- "don't expect at least one line of context"),
+ N_("don't expect at least one line of context")),
OPT_BOOLEAN(0, "reject", &apply_with_reject,
- "leave the rejected hunks in corresponding *.rej files"),
+ N_("leave the rejected hunks in corresponding *.rej files")),
OPT_BOOLEAN(0, "allow-overlap", &allow_overlap,
- "allow overlapping hunks"),
- OPT__VERBOSE(&apply_verbosely, "be verbose"),
+ N_("allow overlapping hunks")),
+ OPT__VERBOSE(&apply_verbosely, N_("be verbose")),
OPT_BIT(0, "inaccurate-eof", &options,
- "tolerate incorrectly detected missing new-line at the end of file",
+ N_("tolerate incorrectly detected missing new-line at the end of file"),
INACCURATE_EOF),
OPT_BIT(0, "recount", &options,
- "do not trust the line counts in the hunk headers",
+ N_("do not trust the line counts in the hunk headers"),
RECOUNT),
- { OPTION_CALLBACK, 0, "directory", NULL, "root",
- "prepend <root> to all filenames",
+ { OPTION_CALLBACK, 0, "directory", NULL, N_("root"),
+ N_("prepend <root> to all filenames"),
0, option_parse_directory },
OPT_END()
};