int init_pathspec(struct pathspec *pathspec, const char **paths)
{
const char **p = paths;
int i;
memset(pathspec, 0, sizeof(*pathspec));
if (!p)
return 0;
while (*p)
p++;
pathspec->raw = paths;
pathspec->nr = p - paths;
if (!pathspec->nr)
return 0;
pathspec->items = xmalloc(sizeof(struct pathspec_item)*pathspec->nr);
for (i = 0; i < pathspec->nr; i++) {
struct pathspec_item *item = pathspec->items+i;
const char *path = paths[i];
item->match = path;
item->len = strlen(path);
item->use_wildcard = !no_wildcard(path);
if (item->use_wildcard)
pathspec->has_wildcard = 1;
}
qsort(pathspec->items, pathspec->nr,
sizeof(struct pathspec_item), pathspec_item_cmp);
return 0;
}
/*
* Verify a filename that we got as an argument for a pathspec
* entry. Note that a filename that begins with "-" never verifies
* as true, because even if such a filename were to exist, we want
* it to be preceded by the "--" marker (or we want the user to
* use a format like "./-filename")
*
* The "diagnose_misspelt_rev" is used to provide a user-friendly
* diagnosis when dying upon finding that "name" is not a pathname.
* If set to 1, the diagnosis will try to diagnose "name" as an
* invalid object name (e.g. HEAD:foo). If set to 0, the diagnosis
* will only complain about an inexisting file.
*
* This function is typically called to check that a "file or rev"
* argument is unambiguous. In this case, the caller will want
* diagnose_misspelt_rev == 1 when verifying the first non-rev
* argument (which could have been a revision), and
* diagnose_misspelt_rev == 0 for the next ones (because we already
* saw a filename, there's not ambiguity anymore).
*/
void verify_filename(const char *prefix,
const char *arg,
int diagnose_misspelt_rev)
{
if (*arg == '-')
die("bad flag '%s' used after filename", arg);
if (check_filename(prefix, arg) || !no_wildcard(arg))
return;
die_verify_filename(prefix, arg, diagnose_misspelt_rev);
}
void add_exclude(const char *string, const char *base,
int baselen, struct exclude_list *which)
{
struct exclude *x;
size_t len;
int to_exclude = 1;
int flags = 0;
if (*string == '!') {
to_exclude = 0;
string++;
}
len = strlen(string);
if (len && string[len - 1] == '/') {
char *s;
x = xmalloc(sizeof(*x) + len);
s = (char *)(x+1);
memcpy(s, string, len - 1);
s[len - 1] = '\0';
string = s;
x->pattern = s;
flags = EXC_FLAG_MUSTBEDIR;
} else {
x = xmalloc(sizeof(*x));
x->pattern = string;
}
x->to_exclude = to_exclude;
x->patternlen = strlen(string);
x->base = base;
x->baselen = baselen;
x->flags = flags;
if (!strchr(string, '/'))
x->flags |= EXC_FLAG_NODIR;
if (no_wildcard(string))
x->flags |= EXC_FLAG_NOWILDCARD;
if (*string == '*' && no_wildcard(string+1))
x->flags |= EXC_FLAG_ENDSWITH;
ALLOC_GROW(which->excludes, which->nr + 1, which->alloc);
which->excludes[which->nr++] = x;
}
int init_pathspec(struct pathspec *pathspec, const char **paths)
{
const char **p = paths;
int i;
memset(pathspec, 0, sizeof(*pathspec));
if (!p)
return 0;
while (*p)
p++;
pathspec->raw = paths;
pathspec->nr = p - paths;
if (!pathspec->nr)
return 0;
pathspec->items = xmalloc(sizeof(struct pathspec_item)*pathspec->nr);
for (i = 0; i < pathspec->nr; i++) {
struct pathspec_item *item = pathspec->items+i;
const char *path = paths[i];
item->match = path;
item->len = strlen(path);
item->flags = 0;
if (limit_pathspec_to_literal()) {
item->nowildcard_len = item->len;
} else {
item->nowildcard_len = simple_length(path);
if (item->nowildcard_len < item->len) {
pathspec->has_wildcard = 1;
if (path[item->nowildcard_len] == '*' &&
no_wildcard(path + item->nowildcard_len + 1))
item->flags |= PATHSPEC_ONESTAR;
}
}
}
qsort(pathspec->items, pathspec->nr,
sizeof(struct pathspec_item), pathspec_item_cmp);
return 0;
}
int check_filename(const char *prefix, const char *arg)
{
const char *name;
struct stat st;
if (starts_with(arg, ":/")) {
if (arg[2] == '\0') /* ":/" is root dir, always exists */
return 1;
name = arg + 2;
} else if (!no_wildcard(arg))
return 1;
else if (prefix)
name = prefix_filename(prefix, strlen(prefix), arg);
else
name = arg;
if (!lstat(name, &st))
return 1; /* file exists */
if (errno == ENOENT || errno == ENOTDIR)
return 0; /* file does not exist */
die_errno("failed to stat '%s'", arg);
}
void parse_exclude_pattern(const char **pattern,
int *patternlen,
int *flags,
int *nowildcardlen)
{
const char *p = *pattern;
size_t i, len;
*flags = 0;
if (*p == '!') {
*flags |= EXC_FLAG_NEGATIVE;
p++;
}
len = strlen(p);
if (len && p[len - 1] == '/') {
len--;
*flags |= EXC_FLAG_MUSTBEDIR;
}
for (i = 0; i < len; i++) {
if (p[i] == '/')
break;
}
if (i == len)
*flags |= EXC_FLAG_NODIR;
*nowildcardlen = simple_length(p);
/*
* we should have excluded the trailing slash from 'p' too,
* but that's one more allocation. Instead just make sure
* nowildcardlen does not exceed real patternlen
*/
if (*nowildcardlen > len)
*nowildcardlen = len;
if (*p == '*' && no_wildcard(p + 1))
*flags |= EXC_FLAG_ENDSWITH;
*pattern = p;
*patternlen = len;
}
static int parse_branchname_arg(int argc, const char **argv,
int dwim_new_local_branch_ok,
struct branch_info *new_branch_info,
struct checkout_opts *opts,
struct object_id *rev,
int *dwim_remotes_matched)
{
struct tree **source_tree = &opts->source_tree;
const char **new_branch = &opts->new_branch;
int argcount = 0;
struct object_id branch_rev;
const char *arg;
int dash_dash_pos;
int has_dash_dash = 0;
int i;
/*
* case 1: git checkout <ref> -- [<paths>]
*
* <ref> must be a valid tree, everything after the '--' must be
* a path.
*
* case 2: git checkout -- [<paths>]
*
* everything after the '--' must be paths.
*
* case 3: git checkout <something> [--]
*
* (a) If <something> is a commit, that is to
* switch to the branch or detach HEAD at it. As a special case,
* if <something> is A...B (missing A or B means HEAD but you can
* omit at most one side), and if there is a unique merge base
* between A and B, A...B names that merge base.
*
* (b) If <something> is _not_ a commit, either "--" is present
* or <something> is not a path, no -t or -b was given, and
* and there is a tracking branch whose name is <something>
* in one and only one remote (or if the branch exists on the
* remote named in checkout.defaultRemote), then this is a
* short-hand to fork local <something> from that
* remote-tracking branch.
*
* (c) Otherwise, if "--" is present, treat it like case (1).
*
* (d) Otherwise :
* - if it's a reference, treat it like case (1)
* - else if it's a path, treat it like case (2)
* - else: fail.
*
* case 4: git checkout <something> <paths>
*
* The first argument must not be ambiguous.
* - If it's *only* a reference, treat it like case (1).
* - If it's only a path, treat it like case (2).
* - else: fail.
*
*/
if (!argc)
return 0;
arg = argv[0];
dash_dash_pos = -1;
for (i = 0; i < argc; i++) {
if (!strcmp(argv[i], "--")) {
dash_dash_pos = i;
break;
}
}
if (dash_dash_pos == 0)
return 1; /* case (2) */
else if (dash_dash_pos == 1)
has_dash_dash = 1; /* case (3) or (1) */
else if (dash_dash_pos >= 2)
die(_("only one reference expected, %d given."), dash_dash_pos);
opts->count_checkout_paths = !opts->quiet && !has_dash_dash;
if (!strcmp(arg, "-"))
arg = "@{-1}";
if (get_oid_mb(arg, rev)) {
/*
* Either case (3) or (4), with <something> not being
* a commit, or an attempt to use case (1) with an
* invalid ref.
*
* It's likely an error, but we need to find out if
* we should auto-create the branch, case (3).(b).
*/
int recover_with_dwim = dwim_new_local_branch_ok;
int could_be_checkout_paths = !has_dash_dash &&
check_filename(opts->prefix, arg);
if (!has_dash_dash && !no_wildcard(arg))
recover_with_dwim = 0;
/*
* Accept "git checkout foo" and "git checkout foo --"
* as candidates for dwim.
*/
if (!(argc == 1 && !has_dash_dash) &&
!(argc == 2 && has_dash_dash))
recover_with_dwim = 0;
if (recover_with_dwim) {
const char *remote = unique_tracking_name(arg, rev,
dwim_remotes_matched);
if (remote) {
if (could_be_checkout_paths)
die(_("'%s' could be both a local file and a tracking branch.\n"
"Please use -- (and optionally --no-guess) to disambiguate"),
arg);
*new_branch = arg;
arg = remote;
/* DWIMmed to create local branch, case (3).(b) */
} else {
recover_with_dwim = 0;
}
}
if (!recover_with_dwim) {
if (has_dash_dash)
die(_("invalid reference: %s"), arg);
return argcount;
}
}
/* we can't end up being in (2) anymore, eat the argument */
argcount++;
argv++;
argc--;
new_branch_info->name = arg;
setup_branch_path(new_branch_info);
if (!check_refname_format(new_branch_info->path, 0) &&
!read_ref(new_branch_info->path, &branch_rev))
oidcpy(rev, &branch_rev);
else
new_branch_info->path = NULL; /* not an existing branch */
new_branch_info->commit = lookup_commit_reference_gently(the_repository, rev, 1);
if (!new_branch_info->commit) {
/* not a commit */
*source_tree = parse_tree_indirect(rev);
} else {
parse_commit_or_die(new_branch_info->commit);
*source_tree = get_commit_tree(new_branch_info->commit);
}
if (!*source_tree) /* case (1): want a tree */
die(_("reference is not a tree: %s"), arg);
if (!has_dash_dash) { /* case (3).(d) -> (1) */
/*
* Do not complain the most common case
* git checkout branch
* even if there happen to be a file called 'branch';
* it would be extremely annoying.
*/
if (argc)
verify_non_filename(opts->prefix, arg);
} else {
argcount++;
argv++;
argc--;
}
return argcount;
}
/*
* Take an element of a pathspec and check for magic signatures.
* Append the result to the prefix. Return the magic bitmap.
*
* For now, we only parse the syntax and throw out anything other than
* "top" magic.
*
* NEEDSWORK: This needs to be rewritten when we start migrating
* get_pathspec() users to use the "struct pathspec" interface. For
* example, a pathspec element may be marked as case-insensitive, but
* the prefix part must always match literally, and a single stupid
* string cannot express such a case.
*/
static unsigned prefix_pathspec(struct pathspec_item *item,
unsigned *p_short_magic,
const char **raw, unsigned flags,
const char *prefix, int prefixlen,
const char *elt)
{
static int literal_global = -1;
static int glob_global = -1;
static int noglob_global = -1;
static int icase_global = -1;
unsigned magic = 0, short_magic = 0, global_magic = 0;
const char *copyfrom = elt, *long_magic_end = NULL;
char *match;
int i, pathspec_prefix = -1;
if (literal_global < 0)
literal_global = git_env_bool(GIT_LITERAL_PATHSPECS_ENVIRONMENT, 0);
if (literal_global)
global_magic |= PATHSPEC_LITERAL;
if (glob_global < 0)
glob_global = git_env_bool(GIT_GLOB_PATHSPECS_ENVIRONMENT, 0);
if (glob_global)
global_magic |= PATHSPEC_GLOB;
if (noglob_global < 0)
noglob_global = git_env_bool(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, 0);
if (glob_global && noglob_global)
die(_("global 'glob' and 'noglob' pathspec settings are incompatible"));
if (icase_global < 0)
icase_global = git_env_bool(GIT_ICASE_PATHSPECS_ENVIRONMENT, 0);
if (icase_global)
global_magic |= PATHSPEC_ICASE;
if ((global_magic & PATHSPEC_LITERAL) &&
(global_magic & ~PATHSPEC_LITERAL))
die(_("global 'literal' pathspec setting is incompatible "
"with all other global pathspec settings"));
if (flags & PATHSPEC_LITERAL_PATH)
global_magic = 0;
if (elt[0] != ':' || literal_global ||
(flags & PATHSPEC_LITERAL_PATH)) {
; /* nothing to do */
} else if (elt[1] == '(') {
/* longhand */
const char *nextat;
for (copyfrom = elt + 2;
*copyfrom && *copyfrom != ')';
copyfrom = nextat) {
size_t len = strcspn(copyfrom, ",)");
if (copyfrom[len] == ',')
nextat = copyfrom + len + 1;
else
/* handle ')' and '\0' */
nextat = copyfrom + len;
if (!len)
continue;
for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
if (strlen(pathspec_magic[i].name) == len &&
!strncmp(pathspec_magic[i].name, copyfrom, len)) {
magic |= pathspec_magic[i].bit;
break;
}
if (starts_with(copyfrom, "prefix:")) {
char *endptr;
pathspec_prefix = strtol(copyfrom + 7,
&endptr, 10);
if (endptr - copyfrom != len)
die(_("invalid parameter for pathspec magic 'prefix'"));
/* "i" would be wrong, but it does not matter */
break;
}
}
if (ARRAY_SIZE(pathspec_magic) <= i)
die(_("Invalid pathspec magic '%.*s' in '%s'"),
(int) len, copyfrom, elt);
}
if (*copyfrom != ')')
die(_("Missing ')' at the end of pathspec magic in '%s'"), elt);
long_magic_end = copyfrom;
copyfrom++;
} else {
/* shorthand */
for (copyfrom = elt + 1;
*copyfrom && *copyfrom != ':';
copyfrom++) {
char ch = *copyfrom;
if (!is_pathspec_magic(ch))
break;
for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
if (pathspec_magic[i].mnemonic == ch) {
short_magic |= pathspec_magic[i].bit;
break;
}
if (ARRAY_SIZE(pathspec_magic) <= i)
die(_("Unimplemented pathspec magic '%c' in '%s'"),
ch, elt);
}
if (*copyfrom == ':')
copyfrom++;
}
magic |= short_magic;
*p_short_magic = short_magic;
/* --noglob-pathspec adds :(literal) _unless_ :(glob) is specified */
if (noglob_global && !(magic & PATHSPEC_GLOB))
global_magic |= PATHSPEC_LITERAL;
/* --glob-pathspec is overridden by :(literal) */
if ((global_magic & PATHSPEC_GLOB) && (magic & PATHSPEC_LITERAL))
global_magic &= ~PATHSPEC_GLOB;
magic |= global_magic;
if (pathspec_prefix >= 0 &&
(prefixlen || (prefix && *prefix)))
die("BUG: 'prefix' magic is supposed to be used at worktree's root");
if ((magic & PATHSPEC_LITERAL) && (magic & PATHSPEC_GLOB))
die(_("%s: 'literal' and 'glob' are incompatible"), elt);
if (pathspec_prefix >= 0) {
match = xstrdup(copyfrom);
prefixlen = pathspec_prefix;
} else if (magic & PATHSPEC_FROMTOP) {
match = xstrdup(copyfrom);
prefixlen = 0;
} else {
match = prefix_path_gently(prefix, prefixlen, &prefixlen, copyfrom);
if (!match)
die(_("%s: '%s' is outside repository"), elt, copyfrom);
}
*raw = item->match = match;
/*
* Prefix the pathspec (keep all magic) and assign to
* original. Useful for passing to another command.
*/
if (flags & PATHSPEC_PREFIX_ORIGIN) {
struct strbuf sb = STRBUF_INIT;
const char *start = elt;
if (prefixlen && !literal_global) {
/* Preserve the actual prefix length of each pattern */
if (short_magic)
die("BUG: prefixing on short magic is not supported");
else if (long_magic_end) {
strbuf_add(&sb, start, long_magic_end - start);
strbuf_addf(&sb, ",prefix:%d", prefixlen);
start = long_magic_end;
} else {
if (*start == ':')
start++;
strbuf_addf(&sb, ":(prefix:%d)", prefixlen);
}
}
strbuf_add(&sb, start, copyfrom - start);
strbuf_addstr(&sb, match);
item->original = strbuf_detach(&sb, NULL);
} else
item->original = elt;
item->len = strlen(item->match);
item->prefix = prefixlen;
if ((flags & PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP) &&
(item->len >= 1 && item->match[item->len - 1] == '/') &&
(i = cache_name_pos(item->match, item->len - 1)) >= 0 &&
S_ISGITLINK(active_cache[i]->ce_mode)) {
item->len--;
match[item->len] = '\0';
}
if (flags & PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE)
for (i = 0; i < active_nr; i++) {
struct cache_entry *ce = active_cache[i];
int ce_len = ce_namelen(ce);
if (!S_ISGITLINK(ce->ce_mode))
continue;
if (item->len <= ce_len || match[ce_len] != '/' ||
memcmp(ce->name, match, ce_len))
continue;
if (item->len == ce_len + 1) {
/* strip trailing slash */
item->len--;
match[item->len] = '\0';
} else
die (_("Pathspec '%s' is in submodule '%.*s'"),
elt, ce_len, ce->name);
}
if (magic & PATHSPEC_LITERAL)
item->nowildcard_len = item->len;
else {
item->nowildcard_len = simple_length(item->match);
if (item->nowildcard_len < prefixlen)
item->nowildcard_len = prefixlen;
}
item->flags = 0;
if (magic & PATHSPEC_GLOB) {
/*
* FIXME: should we enable ONESTAR in _GLOB for
* pattern "* * / * . c"?
*/
} else {
if (item->nowildcard_len < item->len &&
item->match[item->nowildcard_len] == '*' &&
no_wildcard(item->match + item->nowildcard_len + 1))
item->flags |= PATHSPEC_ONESTAR;
}
/* sanity checks, pathspec matchers assume these are sane */
assert(item->nowildcard_len <= item->len &&
item->prefix <= item->len);
return magic;
}
