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5208 lines (4638 loc) · 136 KB
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/*
* apply.c
*
* Copyright (C) Linus Torvalds, 2005
*
* This applies patches on top of some (arbitrary) version of the SCM.
*
*/
#define USE_THE_REPOSITORY_VARIABLE
#define DISABLE_SIGN_COMPARE_WARNINGS
#include "git-compat-util.h"
#include "abspath.h"
#include "base85.h"
#include "config.h"
#include "odb.h"
#include "delta.h"
#include "diff.h"
#include "dir.h"
#include "environment.h"
#include "gettext.h"
#include "hex.h"
#include "xdiff-interface.h"
#include "merge-ll.h"
#include "lockfile.h"
#include "name-hash.h"
#include "object-name.h"
#include "object-file.h"
#include "parse-options.h"
#include "path.h"
#include "quote.h"
#include "read-cache.h"
#include "repository.h"
#include "rerere.h"
#include "apply.h"
#include "entry.h"
#include "setup.h"
#include "symlinks.h"
#include "wildmatch.h"
#include "ws.h"
struct gitdiff_data {
struct strbuf *root;
int linenr;
int p_value;
};
static void git_apply_config(void)
{
repo_config_get_string(the_repository, "apply.whitespace", &apply_default_whitespace);
repo_config_get_string(the_repository, "apply.ignorewhitespace", &apply_default_ignorewhitespace);
repo_config(the_repository, git_xmerge_config, NULL);
}
static int parse_whitespace_option(struct apply_state *state, const char *option)
{
if (!option) {
state->ws_error_action = warn_on_ws_error;
return 0;
}
if (!strcmp(option, "warn")) {
state->ws_error_action = warn_on_ws_error;
return 0;
}
if (!strcmp(option, "nowarn")) {
state->ws_error_action = nowarn_ws_error;
return 0;
}
if (!strcmp(option, "error")) {
state->ws_error_action = die_on_ws_error;
return 0;
}
if (!strcmp(option, "error-all")) {
state->ws_error_action = die_on_ws_error;
state->squelch_whitespace_errors = 0;
return 0;
}
if (!strcmp(option, "strip") || !strcmp(option, "fix")) {
state->ws_error_action = correct_ws_error;
return 0;
}
/*
* Please update $__git_whitespacelist in git-completion.bash,
* Documentation/git-apply.adoc, and Documentation/git-am.adoc
* when you add new options.
*/
return error(_("unrecognized whitespace option '%s'"), option);
}
static int parse_ignorewhitespace_option(struct apply_state *state,
const char *option)
{
if (!option || !strcmp(option, "no") ||
!strcmp(option, "false") || !strcmp(option, "never") ||
!strcmp(option, "none")) {
state->ws_ignore_action = ignore_ws_none;
return 0;
}
if (!strcmp(option, "change")) {
state->ws_ignore_action = ignore_ws_change;
return 0;
}
return error(_("unrecognized whitespace ignore option '%s'"), option);
}
int init_apply_state(struct apply_state *state,
struct repository *repo,
const char *prefix)
{
memset(state, 0, sizeof(*state));
state->prefix = prefix;
state->repo = repo;
state->apply = 1;
state->line_termination = '\n';
state->p_value = 1;
state->p_context = UINT_MAX;
state->squelch_whitespace_errors = 5;
state->ws_error_action = warn_on_ws_error;
state->ws_ignore_action = ignore_ws_none;
state->linenr = 1;
string_list_init_nodup(&state->fn_table);
string_list_init_nodup(&state->limit_by_name);
strset_init(&state->removed_symlinks);
strset_init(&state->kept_symlinks);
strbuf_init(&state->root, 0);
git_apply_config();
if (apply_default_whitespace && parse_whitespace_option(state, apply_default_whitespace))
return -1;
if (apply_default_ignorewhitespace && parse_ignorewhitespace_option(state, apply_default_ignorewhitespace))
return -1;
return 0;
}
void clear_apply_state(struct apply_state *state)
{
string_list_clear(&state->limit_by_name, 0);
strset_clear(&state->removed_symlinks);
strset_clear(&state->kept_symlinks);
strbuf_release(&state->root);
FREE_AND_NULL(state->fake_ancestor);
/* &state->fn_table is cleared at the end of apply_patch() */
}
static void mute_routine(const char *msg UNUSED, va_list params UNUSED)
{
/* do nothing */
}
int check_apply_state(struct apply_state *state, int force_apply)
{
int is_not_gitdir = !startup_info->have_repository;
if (state->apply_with_reject && state->threeway)
return error(_("options '%s' and '%s' cannot be used together"), "--reject", "--3way");
if (state->threeway) {
if (is_not_gitdir)
return error(_("'%s' outside a repository"), "--3way");
state->check_index = 1;
}
if (state->apply_with_reject) {
state->apply = 1;
if (state->apply_verbosity == verbosity_normal)
state->apply_verbosity = verbosity_verbose;
}
if (!force_apply && (state->diffstat || state->numstat || state->summary || state->check || state->fake_ancestor))
state->apply = 0;
if (state->check_index && is_not_gitdir)
return error(_("'%s' outside a repository"), "--index");
if (state->cached) {
if (is_not_gitdir)
return error(_("'%s' outside a repository"), "--cached");
state->check_index = 1;
}
if (state->ita_only && (state->check_index || is_not_gitdir))
state->ita_only = 0;
if (state->check_index)
state->unsafe_paths = 0;
if (state->apply_verbosity <= verbosity_silent) {
state->saved_error_routine = get_error_routine();
state->saved_warn_routine = get_warn_routine();
set_error_routine(mute_routine);
set_warn_routine(mute_routine);
}
return 0;
}
static void set_default_whitespace_mode(struct apply_state *state)
{
if (!state->whitespace_option && !apply_default_whitespace)
state->ws_error_action = (state->apply ? warn_on_ws_error : nowarn_ws_error);
}
/*
* This represents one "hunk" from a patch, starting with
* "@@ -oldpos,oldlines +newpos,newlines @@" marker. The
* patch text is pointed at by patch, and its byte length
* is stored in size. leading and trailing are the number
* of context lines.
*/
struct fragment {
unsigned long leading, trailing;
unsigned long oldpos, oldlines;
unsigned long newpos, newlines;
/*
* 'patch' is usually borrowed from buf in apply_patch(),
* but some codepaths store an allocated buffer.
*/
const char *patch;
unsigned free_patch:1,
rejected:1;
int size;
int linenr;
struct fragment *next;
};
/*
* When dealing with a binary patch, we reuse "leading" field
* to store the type of the binary hunk, either deflated "delta"
* or deflated "literal".
*/
#define binary_patch_method leading
#define BINARY_DELTA_DEFLATED 1
#define BINARY_LITERAL_DEFLATED 2
static void free_fragment_list(struct fragment *list)
{
while (list) {
struct fragment *next = list->next;
if (list->free_patch)
free((char *)list->patch);
free(list);
list = next;
}
}
void release_patch(struct patch *patch)
{
free_fragment_list(patch->fragments);
free(patch->def_name);
free(patch->old_name);
free(patch->new_name);
free(patch->result);
}
static void free_patch(struct patch *patch)
{
release_patch(patch);
free(patch);
}
static void free_patch_list(struct patch *list)
{
while (list) {
struct patch *next = list->next;
free_patch(list);
list = next;
}
}
/*
* A line in a file, len-bytes long (includes the terminating LF,
* except for an incomplete line at the end if the file ends with
* one), and its contents hashes to 'hash'.
*/
struct line {
size_t len;
unsigned hash : 24;
unsigned flag : 8;
#define LINE_COMMON 1
#define LINE_PATCHED 2
};
/*
* This represents a "file", which is an array of "lines".
*/
struct image {
struct strbuf buf;
struct line *line;
size_t line_nr, line_alloc;
};
#define IMAGE_INIT { \
.buf = STRBUF_INIT, \
}
static void image_init(struct image *image)
{
struct image empty = IMAGE_INIT;
memcpy(image, &empty, sizeof(*image));
}
static void image_clear(struct image *image)
{
strbuf_release(&image->buf);
free(image->line);
image_init(image);
}
static uint32_t hash_line(const char *cp, size_t len)
{
size_t i;
uint32_t h;
for (i = 0, h = 0; i < len; i++) {
if (!isspace(cp[i])) {
h = h * 3 + (cp[i] & 0xff);
}
}
return h;
}
static void image_add_line(struct image *img, const char *bol, size_t len, unsigned flag)
{
ALLOC_GROW(img->line, img->line_nr + 1, img->line_alloc);
img->line[img->line_nr].len = len;
img->line[img->line_nr].hash = hash_line(bol, len);
img->line[img->line_nr].flag = flag;
img->line_nr++;
}
/*
* "buf" has the file contents to be patched (read from various sources).
* attach it to "image" and add line-based index to it.
* "image" now owns the "buf".
*/
static void image_prepare(struct image *image, char *buf, size_t len,
int prepare_linetable)
{
const char *cp, *ep;
image_clear(image);
strbuf_attach(&image->buf, buf, len, len + 1);
if (!prepare_linetable)
return;
ep = image->buf.buf + image->buf.len;
cp = image->buf.buf;
while (cp < ep) {
const char *next;
for (next = cp; next < ep && *next != '\n'; next++)
;
if (next < ep)
next++;
image_add_line(image, cp, next - cp, 0);
cp = next;
}
}
static void image_remove_first_line(struct image *img)
{
strbuf_remove(&img->buf, 0, img->line[0].len);
img->line_nr--;
if (img->line_nr)
MOVE_ARRAY(img->line, img->line + 1, img->line_nr);
}
static void image_remove_last_line(struct image *img)
{
size_t last_line_len = img->line[img->line_nr - 1].len;
strbuf_setlen(&img->buf, img->buf.len - last_line_len);
img->line_nr--;
}
/* fmt must contain _one_ %s and no other substitution */
static void say_patch_name(FILE *output, const char *fmt, struct patch *patch)
{
struct strbuf sb = STRBUF_INIT;
if (patch->old_name && patch->new_name &&
strcmp(patch->old_name, patch->new_name)) {
quote_c_style(patch->old_name, &sb, NULL, 0);
strbuf_addstr(&sb, " => ");
quote_c_style(patch->new_name, &sb, NULL, 0);
} else {
const char *n = patch->new_name;
if (!n)
n = patch->old_name;
quote_c_style(n, &sb, NULL, 0);
}
fprintf(output, fmt, sb.buf);
fputc('\n', output);
strbuf_release(&sb);
}
#define SLOP (16)
/*
* apply.c isn't equipped to handle arbitrarily large patches, because
* it intermingles `unsigned long` with `int` for the type used to store
* buffer lengths.
*
* Only process patches that are just shy of 1 GiB large in order to
* avoid any truncation or overflow issues.
*/
#define MAX_APPLY_SIZE (1024UL * 1024 * 1023)
static int read_patch_file(struct strbuf *sb, int fd)
{
if (strbuf_read(sb, fd, 0) < 0)
return error_errno(_("failed to read patch"));
else if (sb->len >= MAX_APPLY_SIZE)
return error(_("patch too large"));
/*
* Make sure that we have some slop in the buffer
* so that we can do speculative "memcmp" etc, and
* see to it that it is NUL-filled.
*/
strbuf_grow(sb, SLOP);
memset(sb->buf + sb->len, 0, SLOP);
return 0;
}
static unsigned long linelen(const char *buffer, unsigned long size)
{
unsigned long len = 0;
while (size--) {
len++;
if (*buffer++ == '\n')
break;
}
return len;
}
static int is_dev_null(const char *str)
{
return skip_prefix(str, "/dev/null", &str) && isspace(*str);
}
#define TERM_SPACE 1
#define TERM_TAB 2
static int name_terminate(int c, int terminate)
{
if (c == ' ' && !(terminate & TERM_SPACE))
return 0;
if (c == '\t' && !(terminate & TERM_TAB))
return 0;
return 1;
}
/* remove double slashes to make --index work with such filenames */
static char *squash_slash(char *name)
{
int i = 0, j = 0;
if (!name)
return NULL;
while (name[i]) {
if ((name[j++] = name[i++]) == '/')
while (name[i] == '/')
i++;
}
name[j] = '\0';
return name;
}
static char *find_name_gnu(struct strbuf *root,
const char *line,
int p_value)
{
struct strbuf name = STRBUF_INIT;
char *cp;
/*
* Proposed "new-style" GNU patch/diff format; see
* https://lore.kernel.org/git/7vll0wvb2a.fsf@assigned-by-dhcp.cox.net/
*/
if (unquote_c_style(&name, line, NULL)) {
strbuf_release(&name);
return NULL;
}
for (cp = name.buf; p_value; p_value--) {
cp = strchr(cp, '/');
if (!cp) {
strbuf_release(&name);
return NULL;
}
cp++;
}
strbuf_remove(&name, 0, cp - name.buf);
if (root->len)
strbuf_insert(&name, 0, root->buf, root->len);
return squash_slash(strbuf_detach(&name, NULL));
}
static size_t sane_tz_len(const char *line, size_t len)
{
const char *tz, *p;
if (len < strlen(" +0500") || line[len-strlen(" +0500")] != ' ')
return 0;
tz = line + len - strlen(" +0500");
if (tz[1] != '+' && tz[1] != '-')
return 0;
for (p = tz + 2; p != line + len; p++)
if (!isdigit(*p))
return 0;
return line + len - tz;
}
static size_t tz_with_colon_len(const char *line, size_t len)
{
const char *tz, *p;
if (len < strlen(" +08:00") || line[len - strlen(":00")] != ':')
return 0;
tz = line + len - strlen(" +08:00");
if (tz[0] != ' ' || (tz[1] != '+' && tz[1] != '-'))
return 0;
p = tz + 2;
if (!isdigit(*p++) || !isdigit(*p++) || *p++ != ':' ||
!isdigit(*p++) || !isdigit(*p++))
return 0;
return line + len - tz;
}
static size_t date_len(const char *line, size_t len)
{
const char *date, *p;
if (len < strlen("72-02-05") || line[len-strlen("-05")] != '-')
return 0;
p = date = line + len - strlen("72-02-05");
if (!isdigit(*p++) || !isdigit(*p++) || *p++ != '-' ||
!isdigit(*p++) || !isdigit(*p++) || *p++ != '-' ||
!isdigit(*p++) || !isdigit(*p++)) /* Not a date. */
return 0;
if (date - line >= strlen("19") &&
isdigit(date[-1]) && isdigit(date[-2])) /* 4-digit year */
date -= strlen("19");
return line + len - date;
}
static size_t short_time_len(const char *line, size_t len)
{
const char *time, *p;
if (len < strlen(" 07:01:32") || line[len-strlen(":32")] != ':')
return 0;
p = time = line + len - strlen(" 07:01:32");
/* Permit 1-digit hours? */
if (*p++ != ' ' ||
!isdigit(*p++) || !isdigit(*p++) || *p++ != ':' ||
!isdigit(*p++) || !isdigit(*p++) || *p++ != ':' ||
!isdigit(*p++) || !isdigit(*p++)) /* Not a time. */
return 0;
return line + len - time;
}
static size_t fractional_time_len(const char *line, size_t len)
{
const char *p;
size_t n;
/* Expected format: 19:41:17.620000023 */
if (!len || !isdigit(line[len - 1]))
return 0;
p = line + len - 1;
/* Fractional seconds. */
while (p > line && isdigit(*p))
p--;
if (*p != '.')
return 0;
/* Hours, minutes, and whole seconds. */
n = short_time_len(line, p - line);
if (!n)
return 0;
return line + len - p + n;
}
static size_t trailing_spaces_len(const char *line, size_t len)
{
const char *p;
/* Expected format: ' ' x (1 or more) */
if (!len || line[len - 1] != ' ')
return 0;
p = line + len;
while (p != line) {
p--;
if (*p != ' ')
return line + len - (p + 1);
}
/* All spaces! */
return len;
}
static size_t diff_timestamp_len(const char *line, size_t len)
{
const char *end = line + len;
size_t n;
/*
* Posix: 2010-07-05 19:41:17
* GNU: 2010-07-05 19:41:17.620000023 -0500
*/
if (!isdigit(end[-1]))
return 0;
n = sane_tz_len(line, end - line);
if (!n)
n = tz_with_colon_len(line, end - line);
end -= n;
n = short_time_len(line, end - line);
if (!n)
n = fractional_time_len(line, end - line);
end -= n;
n = date_len(line, end - line);
if (!n) /* No date. Too bad. */
return 0;
end -= n;
if (end == line) /* No space before date. */
return 0;
if (end[-1] == '\t') { /* Success! */
end--;
return line + len - end;
}
if (end[-1] != ' ') /* No space before date. */
return 0;
/* Whitespace damage. */
end -= trailing_spaces_len(line, end - line);
return line + len - end;
}
static char *find_name_common(struct strbuf *root,
const char *line,
const char *def,
int p_value,
const char *end,
int terminate)
{
int len;
const char *start = NULL;
if (p_value == 0)
start = line;
while (line != end) {
char c = *line;
if (!end && isspace(c)) {
if (c == '\n')
break;
if (name_terminate(c, terminate))
break;
}
line++;
if (c == '/' && !--p_value)
start = line;
}
if (!start)
return squash_slash(xstrdup_or_null(def));
len = line - start;
if (!len)
return squash_slash(xstrdup_or_null(def));
/*
* Generally we prefer the shorter name, especially
* if the other one is just a variation of that with
* something else tacked on to the end (ie "file.orig"
* or "file~").
*/
if (def) {
int deflen = strlen(def);
if (deflen < len && !strncmp(start, def, deflen))
return squash_slash(xstrdup(def));
}
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 strbuf *root,
const char *line,
char *def,
int p_value,
int terminate)
{
if (*line == '"') {
char *name = find_name_gnu(root, line, p_value);
if (name)
return name;
}
return find_name_common(root, line, def, p_value, NULL, terminate);
}
static char *find_name_traditional(struct strbuf *root,
const char *line,
char *def,
int p_value)
{
size_t len;
size_t date_len;
if (*line == '"') {
char *name = find_name_gnu(root, line, p_value);
if (name)
return name;
}
len = strchrnul(line, '\n') - line;
date_len = diff_timestamp_len(line, len);
if (!date_len)
return find_name_common(root, line, def, p_value, NULL, TERM_TAB);
len -= date_len;
return find_name_common(root, line, def, p_value, line + len, 0);
}
/*
* Given the string after "--- " or "+++ ", guess the appropriate
* p_value for the given patch.
*/
static int guess_p_value(struct apply_state *state, const char *nameline)
{
char *name, *cp;
int val = -1;
if (is_dev_null(nameline))
return -1;
name = find_name_traditional(&state->root, nameline, NULL, 0);
if (!name)
return -1;
cp = strchr(name, '/');
if (!cp)
val = 0;
else if (state->prefix) {
/*
* Does it begin with "a/$our-prefix" and such? Then this is
* very likely to apply to our directory.
*/
if (starts_with(name, state->prefix))
val = count_slashes(state->prefix);
else {
cp++;
if (starts_with(cp, state->prefix))
val = count_slashes(state->prefix) + 1;
}
}
free(name);
return val;
}
/*
* Does the ---/+++ line have the POSIX timestamp after the last HT?
* GNU diff puts epoch there to signal a creation/deletion event. Is
* this such a timestamp?
*/
static int has_epoch_timestamp(const char *nameline)
{
/*
* We are only interested in epoch timestamp; any non-zero
* fraction cannot be one, hence "(\.0+)?" in the regexp below.
* For the same reason, the date must be either 1969-12-31 or
* 1970-01-01, and the seconds part must be "00".
*/
const char stamp_regexp[] =
"^[0-2][0-9]:([0-5][0-9]):00(\\.0+)?"
" "
"([-+][0-2][0-9]:?[0-5][0-9])\n";
const char *timestamp = NULL, *cp, *colon;
static regex_t *stamp;
regmatch_t m[10];
int zoneoffset, epoch_hour, hour, minute;
int status;
for (cp = nameline; *cp != '\n'; cp++) {
if (*cp == '\t')
timestamp = cp + 1;
}
if (!timestamp)
return 0;
/*
* YYYY-MM-DD hh:mm:ss must be from either 1969-12-31
* (west of GMT) or 1970-01-01 (east of GMT)
*/
if (skip_prefix(timestamp, "1969-12-31 ", ×tamp))
epoch_hour = 24;
else if (skip_prefix(timestamp, "1970-01-01 ", ×tamp))
epoch_hour = 0;
else
return 0;
if (!stamp) {
stamp = xmalloc(sizeof(*stamp));
if (regcomp(stamp, stamp_regexp, REG_EXTENDED)) {
warning(_("Cannot prepare timestamp regexp %s"),
stamp_regexp);
return 0;
}
}
status = regexec(stamp, timestamp, ARRAY_SIZE(m), m, 0);
if (status) {
if (status != REG_NOMATCH)
warning(_("regexec returned %d for input: %s"),
status, timestamp);
return 0;
}
hour = strtol(timestamp, NULL, 10);
minute = strtol(timestamp + m[1].rm_so, NULL, 10);
zoneoffset = strtol(timestamp + m[3].rm_so + 1, (char **) &colon, 10);
if (*colon == ':')
zoneoffset = zoneoffset * 60 + strtol(colon + 1, NULL, 10);
else
zoneoffset = (zoneoffset / 100) * 60 + (zoneoffset % 100);
if (timestamp[m[3].rm_so] == '-')
zoneoffset = -zoneoffset;
return hour * 60 + minute - zoneoffset == epoch_hour * 60;
}
/*
* Get the name etc info from the ---/+++ lines of a traditional patch header
*
* FIXME! The end-of-filename heuristics are kind of screwy. For existing
* files, we can happily check the index for a match, but for creating a
* new file we should try to match whatever "patch" does. I have no idea.
*/
static int parse_traditional_patch(struct apply_state *state,
const char *first,
const char *second,
struct patch *patch)
{
char *name;
first += 4; /* skip "--- " */
second += 4; /* skip "+++ " */
if (!state->p_value_known) {
int p, q;
p = guess_p_value(state, first);
q = guess_p_value(state, second);
if (p < 0) p = q;
if (0 <= p && p == q) {
state->p_value = p;
state->p_value_known = 1;
}
}
if (is_dev_null(first)) {
patch->is_new = 1;
patch->is_delete = 0;
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->root, first, NULL, state->p_value);
patch->old_name = name;
} else {
char *first_name;
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;
patch->is_delete = 0;
patch->new_name = name;
} else if (has_epoch_timestamp(second)) {
patch->is_new = 0;
patch->is_delete = 1;
patch->old_name = name;
} else {
patch->old_name = name;
patch->new_name = xstrdup_or_null(name);
}
}
if (!name)
return error(_("unable to find filename in patch at line %d"), state->linenr);
return 0;
}
static int gitdiff_hdrend(struct gitdiff_data *state UNUSED,
const char *line UNUSED,
struct patch *patch UNUSED)
{
return 1;
}
/*
* We're anal about diff header consistency, to make
* sure that we don't end up having strange ambiguous
* patches floating around.
*
* As a result, gitdiff_{old|new}name() will check
* their names against any previous information, just
* to make sure..
*/
#define DIFF_OLD_NAME 0
#define DIFF_NEW_NAME 1
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->root, line, NULL, state->p_value, TERM_TAB);
return 0;
}
if (*name) {
char *another;
if (isnull)
return error(_("git apply: bad git-diff - expected /dev/null, got %s on line %d"),
*name, state->linenr);
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) ?
_("git apply: bad git-diff - inconsistent new filename on line %d") :
_("git apply: bad git-diff - inconsistent old filename on line %d"), state->linenr);
}
free(another);
} else {
if (!is_dev_null(line))
return error(_("git apply: bad git-diff - expected /dev/null on line %d"), state->linenr);
}
return 0;
}
static int gitdiff_oldname(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
return gitdiff_verify_name(state, line,
patch->is_new, &patch->old_name,
DIFF_OLD_NAME);
}
static int gitdiff_newname(struct gitdiff_data *state,
const char *line,
struct patch *patch)
{
return gitdiff_verify_name(state, line,
patch->is_delete, &patch->new_name,
DIFF_NEW_NAME);
}
static int parse_mode_line(const char *line, int linenr, unsigned int *mode)
{
char *end;
*mode = strtoul(line, &end, 8);
if (end == line || !isspace(*end))
return error(_("invalid mode on line %d: %s"), linenr, line);
*mode = canon_mode(*mode);
return 0;
}
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 gitdiff_data *state,
const char *line,
struct patch *patch)
{
return parse_mode_line(line, state->linenr, &patch->new_mode);
}