/*
* A simpler implementation of relative_path
*
* Get relative path by removing "prefix" from "in". This function
* first appears in v1.5.6-1-g044bbbc, and makes git_dir shorter
* to increase performance when traversing the path to work_tree.
*/
const char *remove_leading_path(const char *in, const char *prefix)
{
static char buf[PATH_MAX + 1];
int i = 0, j = 0;
if (!prefix || !prefix[0])
return in;
while (prefix[i]) {
if (is_dir_sep(prefix[i])) {
if (!is_dir_sep(in[j]))
return in;
while (is_dir_sep(prefix[i]))
i++;
while (is_dir_sep(in[j]))
j++;
continue;
} else if (in[j] != prefix[i]) {
return in;
}
i++;
j++;
}
if (
/* "/foo" is a prefix of "/foo" */
in[j] &&
/* "/foo" is not a prefix of "/foobar" */
!is_dir_sep(prefix[i-1]) && !is_dir_sep(in[j])
)
return in;
while (is_dir_sep(in[j]))
j++;
if (!in[j])
strcpy(buf, ".");
else
strcpy(buf, in + j);
return buf;
}
const char *relative_path(const char *abs, const char *base)
{
static char buf[PATH_MAX + 1];
int i = 0, j = 0;
if (!base || !base[0])
return abs;
while (base[i]) {
if (is_dir_sep(base[i])) {
if (!is_dir_sep(abs[j]))
return abs;
while (is_dir_sep(base[i]))
i++;
while (is_dir_sep(abs[j]))
j++;
continue;
} else if (abs[j] != base[i]) {
return abs;
}
i++;
j++;
}
if (
/* "/foo" is a prefix of "/foo" */
abs[j] &&
/* "/foo" is not a prefix of "/foobar" */
!is_dir_sep(base[i-1]) && !is_dir_sep(abs[j])
)
return abs;
while (is_dir_sep(abs[j]))
j++;
if (!abs[j])
strcpy(buf, ".");
else
strcpy(buf, abs + j);
return buf;
}
/*===========================================
* filepath -- Find file in sequence of paths
* handles NULL in either argument
* returns alloc'd buffer
* Warning: if called with mode other than "r" this may not
* do what you want, because 1) if file is not found, it appends ext.
* and 2) file always goes in 1st specified directory of path unless
* name is absolute or ./something
*=========================================*/
STRING
filepath (CNSTRING name, CNSTRING mode, CNSTRING path, CNSTRING ext, INT utf8)
{
char buf1[MAXPATHLEN], buf2[MAXPATHLEN];
STRING p, q;
INT nlen, elen;
if (ISNULL(name)) return NULL;
if (ISNULL(path)) return strsave(name);
nlen = strlen(name);
if (ext && *ext) {
elen = strlen(ext);
if ((nlen > elen) && path_match(name+nlen-elen, ext)) {
ext = NULL;
elen = 0;
}
}
else { ext = NULL; elen = 0; }
/* at this point ext is non-null only if name doesn't
* end in ext. I.E. we need to check for name + ext and name
*/
if (nlen + strlen(path) + elen >= MAXLINELEN) return NULL;
/* for absolute and relative path names we first check the
* pathname for validity relative to the current directory
*/
if (is_path(name)) {
/* If this is a path, i.e. it has multiple path elements
* use the name as is first. So absolute paths don't
* get resolved by appending search paths.
*/
if (ext) {
strcpy(buf1,name);
nlen = strlen(buf1);
strcat(buf1, ext);
if (access(buf1, 0) == 0) return strsave(buf1);
buf1[nlen] = '\0'; /* remove extension */
if (access(buf1, 0) == 0) return strsave(buf1);
}
if (access(name, 0) == 0) return strsave(name);
/* fail if get here and name begins with a / or ./
* as we didn't find the file.
* however let foo/bar sneak thru, so we allow access
* to files in subdirectories of the search path if
* named in the filename.
*/
if (is_dir_sep(name[0]) || (name[0] == '.' && is_dir_sep(name[1])))
return strsave(name);
#ifdef WIN32
if (name[0] && name[1]==':' && isasciiletter(name[0])) {
return strsave(name);
}
#endif
}
/* it is a relative path, so search for it in search path */
strcpy(buf1, path);
zero_separate_path(buf1);
p = buf1;
while (*p) {
q = buf2;
strcpy(q, p);
expand_special_fname_chars(buf2, sizeof(buf2), utf8);
q += strlen(q);
if (q>buf2 && !is_dir_sep(q[-1])) {
strcpy(q, LLSTRDIRSEPARATOR);
q++;
}
strcpy(q, name);
if (ext) {
nlen = strlen(buf2);
strcat(buf2, ext);
if (access(buf2, 0) == 0) return strsave(buf2);
buf2[nlen] = '\0'; /* remove extension */
}
if (access(buf2, 0) == 0) return strsave(buf2);
p += strlen(p);
p++;
}
if (mode[0] == 'r') return NULL;
p = buf1;
q = buf2;
strcpy(q, p);
expand_special_fname_chars(buf2, sizeof(buf2), utf8);
q += strlen(q);
if (q>buf2 && !is_dir_sep(q[-1])) {
strcpy(q, LLSTRDIRSEPARATOR);
q++;
}
strcpy(q, name);
if (ext) strcat(q, ext);
return strsave(buf2);
}
int cmd_grep(int argc, const char **argv, const char *prefix)
{
int hit = 0;
int cached = 0;
int seen_dashdash = 0;
int external_grep_allowed__ignored;
const char *show_in_pager = NULL, *default_pager = "dummy";
struct grep_opt opt;
struct object_array list = OBJECT_ARRAY_INIT;
const char **paths = NULL;
struct string_list path_list = STRING_LIST_INIT_NODUP;
int i;
int dummy;
int use_index = 1;
struct option options[] = {
OPT_BOOLEAN(0, "cached", &cached,
"search in index instead of in the work tree"),
OPT_BOOLEAN(0, "index", &use_index,
"--no-index finds in contents not managed by git"),
OPT_GROUP(""),
OPT_BOOLEAN('v', "invert-match", &opt.invert,
"show non-matching lines"),
OPT_BOOLEAN('i', "ignore-case", &opt.ignore_case,
"case insensitive matching"),
OPT_BOOLEAN('w', "word-regexp", &opt.word_regexp,
"match patterns only at word boundaries"),
OPT_SET_INT('a', "text", &opt.binary,
"process binary files as text", GREP_BINARY_TEXT),
OPT_SET_INT('I', NULL, &opt.binary,
"don't match patterns in binary files",
GREP_BINARY_NOMATCH),
{ OPTION_INTEGER, 0, "max-depth", &opt.max_depth, "depth",
"descend at most <depth> levels", PARSE_OPT_NONEG,
NULL, 1 },
OPT_GROUP(""),
OPT_BIT('E', "extended-regexp", &opt.regflags,
"use extended POSIX regular expressions", REG_EXTENDED),
OPT_NEGBIT('G', "basic-regexp", &opt.regflags,
"use basic POSIX regular expressions (default)",
REG_EXTENDED),
OPT_BOOLEAN('F', "fixed-strings", &opt.fixed,
"interpret patterns as fixed strings"),
OPT_GROUP(""),
OPT_BOOLEAN('n', NULL, &opt.linenum, "show line numbers"),
OPT_NEGBIT('h', NULL, &opt.pathname, "don't show filenames", 1),
OPT_BIT('H', NULL, &opt.pathname, "show filenames", 1),
OPT_NEGBIT(0, "full-name", &opt.relative,
"show filenames relative to top directory", 1),
OPT_BOOLEAN('l', "files-with-matches", &opt.name_only,
"show only filenames instead of matching lines"),
OPT_BOOLEAN(0, "name-only", &opt.name_only,
"synonym for --files-with-matches"),
OPT_BOOLEAN('L', "files-without-match",
&opt.unmatch_name_only,
"show only the names of files without match"),
OPT_BOOLEAN('z', "null", &opt.null_following_name,
"print NUL after filenames"),
OPT_BOOLEAN('c', "count", &opt.count,
"show the number of matches instead of matching lines"),
OPT__COLOR(&opt.color, "highlight matches"),
OPT_GROUP(""),
OPT_CALLBACK('C', NULL, &opt, "n",
"show <n> context lines before and after matches",
context_callback),
OPT_INTEGER('B', NULL, &opt.pre_context,
"show <n> context lines before matches"),
OPT_INTEGER('A', NULL, &opt.post_context,
"show <n> context lines after matches"),
OPT_NUMBER_CALLBACK(&opt, "shortcut for -C NUM",
context_callback),
OPT_BOOLEAN('p', "show-function", &opt.funcname,
"show a line with the function name before matches"),
OPT_GROUP(""),
OPT_CALLBACK('f', NULL, &opt, "file",
"read patterns from file", file_callback),
{ OPTION_CALLBACK, 'e', NULL, &opt, "pattern",
"match <pattern>", PARSE_OPT_NONEG, pattern_callback },
{ OPTION_CALLBACK, 0, "and", &opt, NULL,
"combine patterns specified with -e",
PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback },
OPT_BOOLEAN(0, "or", &dummy, ""),
{ OPTION_CALLBACK, 0, "not", &opt, NULL, "",
PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback },
{ OPTION_CALLBACK, '(', NULL, &opt, NULL, "",
PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
open_callback },
{ OPTION_CALLBACK, ')', NULL, &opt, NULL, "",
PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
close_callback },
OPT_BOOLEAN('q', "quiet", &opt.status_only,
"indicate hit with exit status without output"),
OPT_BOOLEAN(0, "all-match", &opt.all_match,
"show only matches from files that match all patterns"),
OPT_GROUP(""),
{ OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager,
"pager", "show matching files in the pager",
PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager },
OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed__ignored,
"allow calling of grep(1) (ignored by this build)"),
{ OPTION_CALLBACK, 0, "help-all", &options, NULL, "show usage",
PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback },
OPT_END()
};
/*
* 'git grep -h', unlike 'git grep -h <pattern>', is a request
* to show usage information and exit.
*/
if (argc == 2 && !strcmp(argv[1], "-h"))
usage_with_options(grep_usage, options);
memset(&opt, 0, sizeof(opt));
opt.prefix = prefix;
opt.prefix_length = (prefix && *prefix) ? strlen(prefix) : 0;
opt.relative = 1;
opt.pathname = 1;
opt.pattern_tail = &opt.pattern_list;
opt.header_tail = &opt.header_list;
opt.regflags = REG_NEWLINE;
opt.max_depth = -1;
strcpy(opt.color_context, "");
strcpy(opt.color_filename, "");
strcpy(opt.color_function, "");
strcpy(opt.color_lineno, "");
strcpy(opt.color_match, GIT_COLOR_BOLD_RED);
strcpy(opt.color_selected, "");
strcpy(opt.color_sep, GIT_COLOR_CYAN);
opt.color = -1;
git_config(grep_config, &opt);
if (opt.color == -1)
opt.color = git_use_color_default;
/*
* If there is no -- then the paths must exist in the working
* tree. If there is no explicit pattern specified with -e or
* -f, we take the first unrecognized non option to be the
* pattern, but then what follows it must be zero or more
* valid refs up to the -- (if exists), and then existing
* paths. If there is an explicit pattern, then the first
* unrecognized non option is the beginning of the refs list
* that continues up to the -- (if exists), and then paths.
*/
argc = parse_options(argc, argv, prefix, options, grep_usage,
PARSE_OPT_KEEP_DASHDASH |
PARSE_OPT_STOP_AT_NON_OPTION |
PARSE_OPT_NO_INTERNAL_HELP);
if (use_index && !startup_info->have_repository)
/* die the same way as if we did it at the beginning */
setup_git_directory();
/*
* skip a -- separator; we know it cannot be
* separating revisions from pathnames if
* we haven't even had any patterns yet
*/
if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) {
argv++;
argc--;
}
/* First unrecognized non-option token */
if (argc > 0 && !opt.pattern_list) {
append_grep_pattern(&opt, argv[0], "command line", 0,
GREP_PATTERN);
argv++;
argc--;
}
if (show_in_pager == default_pager)
show_in_pager = git_pager(1);
if (show_in_pager) {
opt.color = 0;
opt.name_only = 1;
opt.null_following_name = 1;
opt.output_priv = &path_list;
opt.output = append_path;
string_list_append(&path_list, show_in_pager);
use_threads = 0;
}
if (!opt.pattern_list)
die("no pattern given.");
if (!opt.fixed && opt.ignore_case)
opt.regflags |= REG_ICASE;
if ((opt.regflags != REG_NEWLINE) && opt.fixed)
die("cannot mix --fixed-strings and regexp");
#ifndef NO_PTHREADS
if (online_cpus() == 1 || !grep_threads_ok(&opt))
use_threads = 0;
if (use_threads) {
if (opt.pre_context || opt.post_context)
print_hunk_marks_between_files = 1;
start_threads(&opt);
}
#else
use_threads = 0;
#endif
compile_grep_patterns(&opt);
/* Check revs and then paths */
for (i = 0; i < argc; i++) {
const char *arg = argv[i];
unsigned char sha1[20];
/* Is it a rev? */
if (!get_sha1(arg, sha1)) {
struct object *object = parse_object(sha1);
if (!object)
die("bad object %s", arg);
add_object_array(object, arg, &list);
continue;
}
if (!strcmp(arg, "--")) {
i++;
seen_dashdash = 1;
}
break;
}
/* The rest are paths */
if (!seen_dashdash) {
int j;
for (j = i; j < argc; j++)
verify_filename(prefix, argv[j]);
}
if (i < argc)
paths = get_pathspec(prefix, argv + i);
else if (prefix) {
paths = xcalloc(2, sizeof(const char *));
paths[0] = prefix;
paths[1] = NULL;
}
if (show_in_pager && (cached || list.nr))
die("--open-files-in-pager only works on the worktree");
if (show_in_pager && opt.pattern_list && !opt.pattern_list->next) {
const char *pager = path_list.items[0].string;
int len = strlen(pager);
if (len > 4 && is_dir_sep(pager[len - 5]))
pager += len - 4;
if (!strcmp("less", pager) || !strcmp("vi", pager)) {
struct strbuf buf = STRBUF_INIT;
strbuf_addf(&buf, "+/%s%s",
strcmp("less", pager) ? "" : "*",
opt.pattern_list->pattern);
string_list_append(&path_list, buf.buf);
strbuf_detach(&buf, NULL);
}
}
if (!show_in_pager)
setup_pager();
if (!use_index) {
if (cached)
die("--cached cannot be used with --no-index.");
if (list.nr)
die("--no-index cannot be used with revs.");
hit = grep_directory(&opt, paths);
} else if (!list.nr) {
if (!cached)
setup_work_tree();
hit = grep_cache(&opt, paths, cached);
} else {
if (cached)
die("both --cached and trees are given.");
hit = grep_objects(&opt, paths, &list);
}
if (use_threads)
hit |= wait_all();
if (hit && show_in_pager)
run_pager(&opt, prefix);
free_grep_patterns(&opt);
return !hit;
}
static int dir_prefix(const char *buf, const char *dir)
{
int len = strlen(dir);
return !strncmp(buf, dir, len) &&
(is_dir_sep(buf[len]) || buf[len] == '\0');
}
/*
* It is okay if dst == src, but they should not overlap otherwise.
*
* Performs the following normalizations on src, storing the result in dst:
* - Ensures that components are separated by '/' (Windows only)
* - Squashes sequences of '/'.
* - Removes "." components.
* - Removes ".." components, and the components the precede them.
* Returns failure (non-zero) if a ".." component appears as first path
* component anytime during the normalization. Otherwise, returns success (0).
*
* Note that this function is purely textual. It does not follow symlinks,
* verify the existence of the path, or make any system calls.
*
* prefix_len != NULL is for a specific case of prefix_pathspec():
* assume that src == dst and src[0..prefix_len-1] is already
* normalized, any time "../" eats up to the prefix_len part,
* prefix_len is reduced. In the end prefix_len is the remaining
* prefix that has not been overridden by user pathspec.
*
* NEEDSWORK: This function doesn't perform normalization w.r.t. trailing '/'.
* For everything but the root folder itself, the normalized path should not
* end with a '/', then the callers need to be fixed up accordingly.
*
*/
int normalize_path_copy_len(char *dst, const char *src, int *prefix_len)
{
char *dst0;
int i = has_unc_prefix(src);
for (i = i ? i : has_dos_drive_prefix(src); i > 0; i--)
*dst++ = *src++;
dst0 = dst;
if (is_dir_sep(*src)) {
*dst++ = '/';
while (is_dir_sep(*src))
src++;
}
for (;;) {
char c = *src;
/*
* A path component that begins with . could be
* special:
* (1) "." and ends -- ignore and terminate.
* (2) "./" -- ignore them, eat slash and continue.
* (3) ".." and ends -- strip one and terminate.
* (4) "../" -- strip one, eat slash and continue.
*/
if (c == '.') {
if (!src[1]) {
/* (1) */
src++;
} else if (is_dir_sep(src[1])) {
/* (2) */
src += 2;
while (is_dir_sep(*src))
src++;
continue;
} else if (src[1] == '.') {
if (!src[2]) {
/* (3) */
src += 2;
goto up_one;
} else if (is_dir_sep(src[2])) {
/* (4) */
src += 3;
while (is_dir_sep(*src))
src++;
goto up_one;
}
}
}
/* copy up to the next '/', and eat all '/' */
while ((c = *src++) != '\0' && !is_dir_sep(c))
*dst++ = c;
if (is_dir_sep(c)) {
*dst++ = '/';
while (is_dir_sep(c))
c = *src++;
src--;
} else if (!c)
break;
continue;
up_one:
/*
* dst0..dst is prefix portion, and dst[-1] is '/';
* go up one level.
*/
dst--; /* go to trailing '/' */
if (dst <= dst0)
return -1;
/* Windows: dst[-1] cannot be backslash anymore */
while (dst0 < dst && dst[-1] != '/')
dst--;
if (prefix_len && *prefix_len > dst - dst0)
*prefix_len = dst - dst0;
}
*dst = '\0';
return 0;
}
static char *guess_dir_name(const char *repo, int is_bundle, int is_bare)
{
const char *end = repo + strlen(repo), *start;
char *dir;
/*
* Strip trailing spaces, slashes and /.git
*/
while (repo < end && (is_dir_sep(end[-1]) || isspace(end[-1])))
end--;
if (end - repo > 5 && is_dir_sep(end[-5]) &&
!strncmp(end - 4, ".git", 4)) {
end -= 5;
while (repo < end && is_dir_sep(end[-1]))
end--;
}
/*
* Find last component, but be prepared that repo could have
* the form "remote.example.com:foo.git", i.e. no slash
* in the directory part.
*/
start = end;
while (repo < start && !is_dir_sep(start[-1]) && start[-1] != ':')
start--;
/*
* Strip .{bundle,git}.
*/
if (is_bundle) {
if (end - start > 7 && !strncmp(end - 7, ".bundle", 7))
end -= 7;
} else {
if (end - start > 4 && !strncmp(end - 4, ".git", 4))
end -= 4;
}
if (is_bare) {
struct strbuf result = STRBUF_INIT;
strbuf_addf(&result, "%.*s.git", (int)(end - start), start);
dir = strbuf_detach(&result, NULL);
} else
dir = xstrndup(start, end - start);
/*
* Replace sequences of 'control' characters and whitespace
* with one ascii space, remove leading and trailing spaces.
*/
if (*dir) {
char *out = dir;
int prev_space = 1 /* strip leading whitespace */;
for (end = dir; *end; ++end) {
char ch = *end;
if ((unsigned char)ch < '\x20')
ch = '\x20';
if (isspace(ch)) {
if (prev_space)
continue;
prev_space = 1;
} else
prev_space = 0;
*out++ = ch;
}
*out = '\0';
if (out > dir && prev_space)
out[-1] = '\0';
}
return dir;
}
static void prepare_attr_stack(const char *path, int dirlen,
struct attr_stack **stack)
{
struct attr_stack *info;
struct strbuf pathbuf = STRBUF_INIT;
/*
* At the bottom of the attribute stack is the built-in
* set of attribute definitions, followed by the contents
* of $(prefix)/etc/gitattributes and a file specified by
* core.attributesfile. Then, contents from
* .gitattribute files from directories closer to the
* root to the ones in deeper directories are pushed
* to the stack. Finally, at the very top of the stack
* we always keep the contents of $GIT_DIR/info/attributes.
*
* When checking, we use entries from near the top of the
* stack, preferring $GIT_DIR/info/attributes, then
* .gitattributes in deeper directories to shallower ones,
* and finally use the built-in set as the default.
*/
bootstrap_attr_stack(stack);
/*
* Pop the "info" one that is always at the top of the stack.
*/
info = *stack;
*stack = info->prev;
/*
* Pop the ones from directories that are not the prefix of
* the path we are checking. Break out of the loop when we see
* the root one (whose origin is an empty string "") or the builtin
* one (whose origin is NULL) without popping it.
*/
while ((*stack)->origin) {
int namelen = (*stack)->originlen;
struct attr_stack *elem;
elem = *stack;
if (namelen <= dirlen &&
!strncmp(elem->origin, path, namelen) &&
(!namelen || path[namelen] == '/'))
break;
debug_pop(elem);
*stack = elem->prev;
attr_stack_free(elem);
}
/*
* bootstrap_attr_stack() should have added, and the
* above loop should have stopped before popping, the
* root element whose attr_stack->origin is set to an
* empty string.
*/
assert((*stack)->origin);
strbuf_addstr(&pathbuf, (*stack)->origin);
/* Build up to the directory 'path' is in */
while (pathbuf.len < dirlen) {
size_t len = pathbuf.len;
struct attr_stack *next;
char *origin;
/* Skip path-separator */
if (len < dirlen && is_dir_sep(path[len]))
len++;
/* Find the end of the next component */
while (len < dirlen && !is_dir_sep(path[len]))
len++;
if (pathbuf.len > 0)
strbuf_addch(&pathbuf, '/');
strbuf_add(&pathbuf, path + pathbuf.len, (len - pathbuf.len));
strbuf_addf(&pathbuf, "/%s", GITATTRIBUTES_FILE);
next = read_attr(pathbuf.buf, 0);
/* reset the pathbuf to not include "/.gitattributes" */
strbuf_setlen(&pathbuf, len);
origin = xstrdup(pathbuf.buf);
push_stack(stack, next, origin, len);
}
/*
* Finally push the "info" one at the top of the stack.
*/
push_stack(stack, info, NULL, 0);
strbuf_release(&pathbuf);
}
/*
* Return the real path (i.e., absolute path, with symlinks resolved
* and extra slashes removed) equivalent to the specified path. (If
* you want an absolute path but don't mind links, use
* absolute_path().) The return value is a pointer to a static
* buffer.
*
* The input and all intermediate paths must be shorter than MAX_PATH.
* The directory part of path (i.e., everything up to the last
* dir_sep) must denote a valid, existing directory, but the last
* component need not exist. If die_on_error is set, then die with an
* informative error message if there is a problem. Otherwise, return
* NULL on errors (without generating any output).
*
* If path is our buffer, then return path, as it's already what the
* user wants.
*/
static const char *real_path_internal(const char *path, int die_on_error)
{
static struct strbuf sb = STRBUF_INIT;
char *retval = NULL;
/*
* If we have to temporarily chdir(), store the original CWD
* here so that we can chdir() back to it at the end of the
* function:
*/
struct strbuf cwd = STRBUF_INIT;
int depth = MAXDEPTH;
char *last_elem = NULL;
struct stat st;
/* We've already done it */
if (path == sb.buf)
return path;
if (!*path) {
if (die_on_error)
die("The empty string is not a valid path");
else
goto error_out;
}
strbuf_reset(&sb);
strbuf_addstr(&sb, path);
while (depth--) {
if (!is_directory(sb.buf)) {
char *last_slash = find_last_dir_sep(sb.buf);
if (last_slash) {
last_elem = xstrdup(last_slash + 1);
strbuf_setlen(&sb, last_slash - sb.buf + 1);
} else {
last_elem = xmemdupz(sb.buf, sb.len);
strbuf_reset(&sb);
}
}
if (sb.len) {
if (!cwd.len && strbuf_getcwd(&cwd)) {
if (die_on_error)
die_errno("Could not get current working directory");
else
goto error_out;
}
if (chdir(sb.buf)) {
if (die_on_error)
die_errno("Could not switch to '%s'",
sb.buf);
else
goto error_out;
}
}
if (strbuf_getcwd(&sb)) {
if (die_on_error)
die_errno("Could not get current working directory");
else
goto error_out;
}
if (last_elem) {
if (sb.len && !is_dir_sep(sb.buf[sb.len - 1]))
strbuf_addch(&sb, '/');
strbuf_addstr(&sb, last_elem);
free(last_elem);
last_elem = NULL;
}
if (!lstat(sb.buf, &st) && S_ISLNK(st.st_mode)) {
struct strbuf next_sb = STRBUF_INIT;
ssize_t len = strbuf_readlink(&next_sb, sb.buf, 0);
if (len < 0) {
if (die_on_error)
die_errno("Invalid symlink '%s'",
sb.buf);
else
goto error_out;
}
strbuf_swap(&sb, &next_sb);
strbuf_release(&next_sb);
} else
break;
}
retval = sb.buf;
error_out:
free(last_elem);
if (cwd.len && chdir(cwd.buf))
die_errno("Could not change back to '%s'", cwd.buf);
strbuf_release(&cwd);
return retval;
}
int dir_iterator_advance(struct dir_iterator *dir_iterator)
{
struct dir_iterator_int *iter =
(struct dir_iterator_int *)dir_iterator;
while (1) {
struct dir_iterator_level *level =
&iter->levels[iter->levels_nr - 1];
struct dirent *de;
if (!level->initialized) {
/*
* Note: dir_iterator_begin() ensures that
* path is not the empty string.
*/
if (!is_dir_sep(iter->base.path.buf[iter->base.path.len - 1]))
strbuf_addch(&iter->base.path, '/');
level->prefix_len = iter->base.path.len;
level->dir = opendir(iter->base.path.buf);
if (!level->dir && errno != ENOENT) {
warning("error opening directory %s: %s",
iter->base.path.buf, strerror(errno));
/* Popping the level is handled below */
}
level->initialized = 1;
} else if (S_ISDIR(iter->base.st.st_mode)) {
if (level->dir_state == DIR_STATE_ITER) {
/*
* The directory was just iterated
* over; now prepare to iterate into
* it.
*/
level->dir_state = DIR_STATE_RECURSE;
ALLOC_GROW(iter->levels, iter->levels_nr + 1,
iter->levels_alloc);
level = &iter->levels[iter->levels_nr++];
level->initialized = 0;
continue;
} else {
/*
* The directory has already been
* iterated over and iterated into;
* we're done with it.
*/
}
}
if (!level->dir) {
/*
* This level is exhausted (or wasn't opened
* successfully); pop up a level.
*/
if (--iter->levels_nr == 0)
return dir_iterator_abort(dir_iterator);
continue;
}
/*
* Loop until we find an entry that we can give back
* to the caller:
*/
while (1) {
strbuf_setlen(&iter->base.path, level->prefix_len);
errno = 0;
de = readdir(level->dir);
if (!de) {
/* This level is exhausted; pop up a level. */
if (errno) {
warning("error reading directory %s: %s",
iter->base.path.buf, strerror(errno));
} else if (closedir(level->dir))
warning("error closing directory %s: %s",
iter->base.path.buf, strerror(errno));
level->dir = NULL;
if (--iter->levels_nr == 0)
return dir_iterator_abort(dir_iterator);
break;
}
if (is_dot_or_dotdot(de->d_name))
continue;
strbuf_addstr(&iter->base.path, de->d_name);
if (lstat(iter->base.path.buf, &iter->base.st) < 0) {
if (errno != ENOENT)
warning("error reading path '%s': %s",
iter->base.path.buf,
strerror(errno));
continue;
}
/*
* We have to set these each time because
* the path strbuf might have been realloc()ed.
*/
iter->base.relative_path =
iter->base.path.buf + iter->levels[0].prefix_len;
iter->base.basename =
iter->base.path.buf + level->prefix_len;
level->dir_state = DIR_STATE_ITER;
return ITER_OK;
}
}
}
/*
* Use this to get the real path, i.e. resolve links. If you want an
* absolute path but don't mind links, use absolute_path.
*
* If path is our buffer, then return path, as it's already what the
* user wants.
*/
const char *real_path(const char *path)
{
static char bufs[2][PATH_MAX + 1], *buf = bufs[0], *next_buf = bufs[1];
char cwd[1024] = "";
int buf_index = 1;
int depth = MAXDEPTH;
char *last_elem = NULL;
struct stat st;
/* We've already done it */
if (path == buf || path == next_buf)
return path;
if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
die ("Too long path: %.*s", 60, path);
while (depth--) {
if (!is_directory(buf)) {
char *last_slash = find_last_dir_sep(buf);
if (last_slash) {
*last_slash = '\0';
last_elem = xstrdup(last_slash + 1);
} else {
last_elem = xstrdup(buf);
*buf = '\0';
}
}
if (*buf) {
if (!*cwd && !getcwd(cwd, sizeof(cwd)))
die_errno ("Could not get current working directory");
if (chdir(buf))
die_errno ("Could not switch to '%s'", buf);
}
if (!getcwd(buf, PATH_MAX))
die_errno ("Could not get current working directory");
if (last_elem) {
size_t len = strlen(buf);
if (len + strlen(last_elem) + 2 > PATH_MAX)
die ("Too long path name: '%s/%s'",
buf, last_elem);
if (len && !is_dir_sep(buf[len-1]))
buf[len++] = '/';
strcpy(buf + len, last_elem);
free(last_elem);
last_elem = NULL;
}
if (!lstat(buf, &st) && S_ISLNK(st.st_mode)) {
ssize_t len = readlink(buf, next_buf, PATH_MAX);
if (len < 0)
die_errno ("Invalid symlink '%s'", buf);
if (PATH_MAX <= len)
die("symbolic link too long: %s", buf);
next_buf[len] = '\0';
buf = next_buf;
buf_index = 1 - buf_index;
next_buf = bufs[buf_index];
} else
break;
}
if (*cwd && chdir(cwd))
die_errno ("Could not change back to '%s'", cwd);
return buf;
}
static int starts_with_dot_dot_slash(const char *str)
{
return str[0] == '.' && str[1] == '.' && is_dir_sep(str[2]);
}
/*
* The `url` argument is the URL that navigates to the submodule origin
* repo. When relative, this URL is relative to the superproject origin
* URL repo. The `up_path` argument, if specified, is the relative
* path that navigates from the submodule working tree to the superproject
* working tree. Returns the origin URL of the submodule.
*
* Return either an absolute URL or filesystem path (if the superproject
* origin URL is an absolute URL or filesystem path, respectively) or a
* relative file system path (if the superproject origin URL is a relative
* file system path).
*
* When the output is a relative file system path, the path is either
* relative to the submodule working tree, if up_path is specified, or to
* the superproject working tree otherwise.
*
* NEEDSWORK: This works incorrectly on the domain and protocol part.
* remote_url url outcome expectation
* http://a.com/b ../c http://a.com/c as is
* http://a.com/b/ ../c http://a.com/c same as previous line, but
* ignore trailing slash in url
* http://a.com/b ../../c http://c error out
* http://a.com/b ../../../c http:/c error out
* http://a.com/b ../../../../c http:c error out
* http://a.com/b ../../../../../c .:c error out
* NEEDSWORK: Given how chop_last_dir() works, this function is broken
* when a local part has a colon in its path component, too.
*/
static char *relative_url(const char *remote_url,
const char *url,
const char *up_path)
{
int is_relative = 0;
int colonsep = 0;
char *out;
char *remoteurl = xstrdup(remote_url);
struct strbuf sb = STRBUF_INIT;
size_t len = strlen(remoteurl);
if (is_dir_sep(remoteurl[len-1]))
remoteurl[len-1] = '\0';
if (!url_is_local_not_ssh(remoteurl) || is_absolute_path(remoteurl))
is_relative = 0;
else {
is_relative = 1;
/*
* Prepend a './' to ensure all relative
* remoteurls start with './' or '../'
*/
if (!starts_with_dot_slash(remoteurl) &&
!starts_with_dot_dot_slash(remoteurl)) {
strbuf_reset(&sb);
strbuf_addf(&sb, "./%s", remoteurl);
free(remoteurl);
remoteurl = strbuf_detach(&sb, NULL);
}
}
/*
* When the url starts with '../', remove that and the
* last directory in remoteurl.
*/
while (url) {
if (starts_with_dot_dot_slash(url)) {
url += 3;
colonsep |= chop_last_dir(&remoteurl, is_relative);
} else if (starts_with_dot_slash(url))
url += 2;
else
break;
}
strbuf_reset(&sb);
strbuf_addf(&sb, "%s%s%s", remoteurl, colonsep ? ":" : "/", url);
if (ends_with(url, "/"))
strbuf_setlen(&sb, sb.len - 1);
free(remoteurl);
if (starts_with_dot_slash(sb.buf))
out = xstrdup(sb.buf + 2);
else
out = xstrdup(sb.buf);
strbuf_reset(&sb);
if (!up_path || !is_relative)
return out;
strbuf_addf(&sb, "%s%s", up_path, out);
free(out);
return strbuf_detach(&sb, NULL);
}
/*
* Return the real path (i.e., absolute path, with symlinks resolved
* and extra slashes removed) equivalent to the specified path. (If
* you want an absolute path but don't mind links, use
* absolute_path().) The return value is a pointer to a static
* buffer.
*
* The input and all intermediate paths must be shorter than MAX_PATH.
* The directory part of path (i.e., everything up to the last
* dir_sep) must denote a valid, existing directory, but the last
* component need not exist. If die_on_error is set, then die with an
* informative error message if there is a problem. Otherwise, return
* NULL on errors (without generating any output).
*
* If path is our buffer, then return path, as it's already what the
* user wants.
*/
static const char *real_path_internal(const char *path, int die_on_error)
{
static char bufs[2][PATH_MAX + 1], *buf = bufs[0], *next_buf = bufs[1];
char *retval = NULL;
/*
* If we have to temporarily chdir(), store the original CWD
* here so that we can chdir() back to it at the end of the
* function:
*/
char cwd[1024] = "";
int buf_index = 1;
int depth = MAXDEPTH;
char *last_elem = NULL;
struct stat st;
/* We've already done it */
if (path == buf || path == next_buf)
return path;
if (!*path) {
if (die_on_error)
die("The empty string is not a valid path");
else
goto error_out;
}
if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX) {
if (die_on_error)
die("Too long path: %.*s", 60, path);
else
goto error_out;
}
while (depth--) {
if (!is_directory(buf)) {
char *last_slash = find_last_dir_sep(buf);
if (last_slash) {
last_elem = xstrdup(last_slash + 1);
last_slash[1] = '\0';
} else {
last_elem = xstrdup(buf);
*buf = '\0';
}
}
if (*buf) {
if (!*cwd && !getcwd(cwd, sizeof(cwd))) {
if (die_on_error)
die_errno("Could not get current working directory");
else
goto error_out;
}
if (chdir(buf)) {
if (die_on_error)
die_errno("Could not switch to '%s'", buf);
else
goto error_out;
}
}
if (!getcwd(buf, PATH_MAX)) {
if (die_on_error)
die_errno("Could not get current working directory");
else
goto error_out;
}
if (last_elem) {
size_t len = strlen(buf);
if (len + strlen(last_elem) + 2 > PATH_MAX) {
if (die_on_error)
die("Too long path name: '%s/%s'",
buf, last_elem);
else
goto error_out;
}
if (len && !is_dir_sep(buf[len - 1]))
buf[len++] = '/';
strcpy(buf + len, last_elem);
free(last_elem);
last_elem = NULL;
}
if (!lstat(buf, &st) && S_ISLNK(st.st_mode)) {
ssize_t len = readlink(buf, next_buf, PATH_MAX);
if (len < 0) {
if (die_on_error)
die_errno("Invalid symlink '%s'", buf);
else
goto error_out;
}
if (PATH_MAX <= len) {
if (die_on_error)
die("symbolic link too long: %s", buf);
else
goto error_out;
}
next_buf[len] = '\0';
buf = next_buf;
buf_index = 1 - buf_index;
next_buf = bufs[buf_index];
} else
break;
}
retval = buf;
error_out:
free(last_elem);
if (*cwd && chdir(cwd))
die_errno ("Could not change back to '%s'", cwd);
return retval;
}
static char *guess_dir_name(const char *repo, int is_bundle, int is_bare)
{
const char *end = repo + strlen(repo), *start, *ptr;
size_t len;
char *dir;
/*
* Skip scheme.
*/
start = strstr(repo, "://");
if (start == NULL)
start = repo;
else
start += 3;
/*
* Skip authentication data. The stripping does happen
* greedily, such that we strip up to the last '@' inside
* the host part.
*/
for (ptr = start; ptr < end && !is_dir_sep(*ptr); ptr++) {
if (*ptr == '@')
start = ptr + 1;
}
/*
* Strip trailing spaces, slashes and /.git
*/
while (start < end && (is_dir_sep(end[-1]) || isspace(end[-1])))
end--;
if (end - start > 5 && is_dir_sep(end[-5]) &&
!strncmp(end - 4, ".git", 4)) {
end -= 5;
while (start < end && is_dir_sep(end[-1]))
end--;
}
/*
* Strip trailing port number if we've got only a
* hostname (that is, there is no dir separator but a
* colon). This check is required such that we do not
* strip URI's like '/foo/bar:2222.git', which should
* result in a dir '2222' being guessed due to backwards
* compatibility.
*/
if (memchr(start, '/', end - start) == NULL
&& memchr(start, ':', end - start) != NULL) {
ptr = end;
while (start < ptr && isdigit(ptr[-1]) && ptr[-1] != ':')
ptr--;
if (start < ptr && ptr[-1] == ':')
end = ptr - 1;
}
/*
* Find last component. To remain backwards compatible we
* also regard colons as path separators, such that
* cloning a repository 'foo:bar.git' would result in a
* directory 'bar' being guessed.
*/
ptr = end;
while (start < ptr && !is_dir_sep(ptr[-1]) && ptr[-1] != ':')
ptr--;
start = ptr;
/*
* Strip .{bundle,git}.
*/
len = end - start;
strip_suffix_mem(start, &len, is_bundle ? ".bundle" : ".git");
if (!len || (len == 1 && *start == '/'))
die(_("No directory name could be guessed.\n"
"Please specify a directory on the command line"));
if (is_bare)
dir = xstrfmt("%.*s.git", (int)len, start);
else
dir = xstrndup(start, len);
/*
* Replace sequences of 'control' characters and whitespace
* with one ascii space, remove leading and trailing spaces.
*/
if (*dir) {
char *out = dir;
int prev_space = 1 /* strip leading whitespace */;
for (end = dir; *end; ++end) {
char ch = *end;
if ((unsigned char)ch < '\x20')
ch = '\x20';
if (isspace(ch)) {
if (prev_space)
continue;
prev_space = 1;
} else
prev_space = 0;
*out++ = ch;
}
*out = '\0';
if (out > dir && prev_space)
out[-1] = '\0';
}
return dir;
}
int cmd_rm(int argc, const char **argv, const char *prefix)
{
int i, newfd;
const char **pathspec;
char *seen;
git_config(git_default_config, NULL);
argc = parse_options(argc, argv, prefix, builtin_rm_options,
builtin_rm_usage, 0);
if (!argc)
usage_with_options(builtin_rm_usage, builtin_rm_options);
if (!index_only)
setup_work_tree();
newfd = hold_locked_index(&lock_file, 1);
if (read_cache() < 0)
die(_("index file corrupt"));
/*
* Drop trailing directory separators from directories so we'll find
* submodules in the index.
*/
for (i = 0; i < argc; i++) {
size_t pathlen = strlen(argv[i]);
if (pathlen && is_dir_sep(argv[i][pathlen - 1]) &&
is_directory(argv[i])) {
do {
pathlen--;
} while (pathlen && is_dir_sep(argv[i][pathlen - 1]));
argv[i] = xmemdupz(argv[i], pathlen);
}
}
pathspec = get_pathspec(prefix, argv);
refresh_index(&the_index, REFRESH_QUIET, pathspec, NULL, NULL);
seen = NULL;
for (i = 0; pathspec[i] ; i++)
/* nothing */;
seen = xcalloc(i, 1);
for (i = 0; i < active_nr; i++) {
struct cache_entry *ce = active_cache[i];
if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen))
continue;
ALLOC_GROW(list.entry, list.nr + 1, list.alloc);
list.entry[list.nr].name = ce->name;
list.entry[list.nr++].is_submodule = S_ISGITLINK(ce->ce_mode);
}
if (pathspec) {
const char *match;
int seen_any = 0;
for (i = 0; (match = pathspec[i]) != NULL ; i++) {
if (!seen[i]) {
if (!ignore_unmatch) {
die(_("pathspec '%s' did not match any files"),
match);
}
}
else {
seen_any = 1;
}
if (!recursive && seen[i] == MATCHED_RECURSIVELY)
die(_("not removing '%s' recursively without -r"),
*match ? match : ".");
}
if (! seen_any)
exit(0);
}
/*
* If not forced, the file, the index and the HEAD (if exists)
* must match; but the file can already been removed, since
* this sequence is a natural "novice" way:
*
* rm F; git rm F
*
* Further, if HEAD commit exists, "diff-index --cached" must
* report no changes unless forced.
*/
if (!force) {
unsigned char sha1[20];
if (get_sha1("HEAD", sha1))
hashclr(sha1);
if (check_local_mod(sha1, index_only))
exit(1);
} else if (!index_only) {
if (check_submodules_use_gitfiles())
exit(1);
}
/*
* First remove the names from the index: we won't commit
* the index unless all of them succeed.
*/
for (i = 0; i < list.nr; i++) {
const char *path = list.entry[i].name;
if (!quiet)
printf("rm '%s'\n", path);
if (remove_file_from_cache(path))
die(_("git rm: unable to remove %s"), path);
}
if (show_only)
return 0;
/*
* Then, unless we used "--cached", remove the filenames from
* the workspace. If we fail to remove the first one, we
* abort the "git rm" (but once we've successfully removed
* any file at all, we'll go ahead and commit to it all:
* by then we've already committed ourselves and can't fail
* in the middle)
*/
if (!index_only) {
int removed = 0;
for (i = 0; i < list.nr; i++) {
const char *path = list.entry[i].name;
if (list.entry[i].is_submodule) {
if (is_empty_dir(path)) {
if (!rmdir(path)) {
removed = 1;
continue;
}
} else {
struct strbuf buf = STRBUF_INIT;
strbuf_addstr(&buf, path);
if (!remove_dir_recursively(&buf, 0)) {
removed = 1;
strbuf_release(&buf);
continue;
}
strbuf_release(&buf);
/* Fallthrough and let remove_path() fail. */
}
}
if (!remove_path(path)) {
removed = 1;
continue;
}
if (!removed)
die_errno("git rm: '%s'", path);
}
}
if (active_cache_changed) {
if (write_cache(newfd, active_cache, active_nr) ||
commit_locked_index(&lock_file))
die(_("Unable to write new index file"));
}
return 0;
}
int cmd_grep(int argc, const char **argv, const char *prefix)
{
int hit = 0;
int cached = 0, untracked = 0, opt_exclude = -1;
int seen_dashdash = 0;
int external_grep_allowed__ignored;
const char *show_in_pager = NULL, *default_pager = "dummy";
struct grep_opt opt;
struct object_array list = OBJECT_ARRAY_INIT;
struct pathspec pathspec;
struct string_list path_list = STRING_LIST_INIT_NODUP;
int i;
int dummy;
int use_index = 1;
int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED;
int allow_revs;
struct option options[] = {
OPT_BOOL(0, "cached", &cached,
N_("search in index instead of in the work tree")),
OPT_NEGBIT(0, "no-index", &use_index,
N_("find in contents not managed by git"), 1),
OPT_BOOL(0, "untracked", &untracked,
N_("search in both tracked and untracked files")),
OPT_SET_INT(0, "exclude-standard", &opt_exclude,
N_("ignore files specified via '.gitignore'"), 1),
OPT_BOOL(0, "recurse-submodules", &recurse_submodules,
N_("recursively search in each submodule")),
OPT_GROUP(""),
OPT_BOOL('v', "invert-match", &opt.invert,
N_("show non-matching lines")),
OPT_BOOL('i', "ignore-case", &opt.ignore_case,
N_("case insensitive matching")),
OPT_BOOL('w', "word-regexp", &opt.word_regexp,
N_("match patterns only at word boundaries")),
OPT_SET_INT('a', "text", &opt.binary,
N_("process binary files as text"), GREP_BINARY_TEXT),
OPT_SET_INT('I', NULL, &opt.binary,
N_("don't match patterns in binary files"),
GREP_BINARY_NOMATCH),
OPT_BOOL(0, "textconv", &opt.allow_textconv,
N_("process binary files with textconv filters")),
{ OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"),
N_("descend at most <depth> levels"), PARSE_OPT_NONEG,
NULL, 1 },
OPT_GROUP(""),
OPT_SET_INT('E', "extended-regexp", &pattern_type_arg,
N_("use extended POSIX regular expressions"),
GREP_PATTERN_TYPE_ERE),
OPT_SET_INT('G', "basic-regexp", &pattern_type_arg,
N_("use basic POSIX regular expressions (default)"),
GREP_PATTERN_TYPE_BRE),
OPT_SET_INT('F', "fixed-strings", &pattern_type_arg,
N_("interpret patterns as fixed strings"),
GREP_PATTERN_TYPE_FIXED),
OPT_SET_INT('P', "perl-regexp", &pattern_type_arg,
N_("use Perl-compatible regular expressions"),
GREP_PATTERN_TYPE_PCRE),
OPT_GROUP(""),
OPT_BOOL('n', "line-number", &opt.linenum, N_("show line numbers")),
OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1),
OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1),
OPT_NEGBIT(0, "full-name", &opt.relative,
N_("show filenames relative to top directory"), 1),
OPT_BOOL('l', "files-with-matches", &opt.name_only,
N_("show only filenames instead of matching lines")),
OPT_BOOL(0, "name-only", &opt.name_only,
N_("synonym for --files-with-matches")),
OPT_BOOL('L', "files-without-match",
&opt.unmatch_name_only,
N_("show only the names of files without match")),
OPT_BOOL('z', "null", &opt.null_following_name,
N_("print NUL after filenames")),
OPT_BOOL('c', "count", &opt.count,
N_("show the number of matches instead of matching lines")),
OPT__COLOR(&opt.color, N_("highlight matches")),
OPT_BOOL(0, "break", &opt.file_break,
N_("print empty line between matches from different files")),
OPT_BOOL(0, "heading", &opt.heading,
N_("show filename only once above matches from same file")),
OPT_GROUP(""),
OPT_CALLBACK('C', "context", &opt, N_("n"),
N_("show <n> context lines before and after matches"),
context_callback),
OPT_INTEGER('B', "before-context", &opt.pre_context,
N_("show <n> context lines before matches")),
OPT_INTEGER('A', "after-context", &opt.post_context,
N_("show <n> context lines after matches")),
OPT_INTEGER(0, "threads", &num_threads,
N_("use <n> worker threads")),
OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"),
context_callback),
OPT_BOOL('p', "show-function", &opt.funcname,
N_("show a line with the function name before matches")),
OPT_BOOL('W', "function-context", &opt.funcbody,
N_("show the surrounding function")),
OPT_GROUP(""),
OPT_CALLBACK('f', NULL, &opt, N_("file"),
N_("read patterns from file"), file_callback),
{ OPTION_CALLBACK, 'e', NULL, &opt, N_("pattern"),
N_("match <pattern>"), PARSE_OPT_NONEG, pattern_callback },
{ OPTION_CALLBACK, 0, "and", &opt, NULL,
N_("combine patterns specified with -e"),
PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback },
OPT_BOOL(0, "or", &dummy, ""),
{ OPTION_CALLBACK, 0, "not", &opt, NULL, "",
PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback },
{ OPTION_CALLBACK, '(', NULL, &opt, NULL, "",
PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
open_callback },
{ OPTION_CALLBACK, ')', NULL, &opt, NULL, "",
PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
close_callback },
OPT__QUIET(&opt.status_only,
N_("indicate hit with exit status without output")),
OPT_BOOL(0, "all-match", &opt.all_match,
N_("show only matches from files that match all patterns")),
{ OPTION_SET_INT, 0, "debug", &opt.debug, NULL,
N_("show parse tree for grep expression"),
PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1 },
OPT_GROUP(""),
{ OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager,
N_("pager"), N_("show matching files in the pager"),
PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager },
OPT_BOOL(0, "ext-grep", &external_grep_allowed__ignored,
N_("allow calling of grep(1) (ignored by this build)")),
OPT_END()
};
init_grep_defaults();
git_config(grep_cmd_config, NULL);
grep_init(&opt, prefix);
/*
* If there is no -- then the paths must exist in the working
* tree. If there is no explicit pattern specified with -e or
* -f, we take the first unrecognized non option to be the
* pattern, but then what follows it must be zero or more
* valid refs up to the -- (if exists), and then existing
* paths. If there is an explicit pattern, then the first
* unrecognized non option is the beginning of the refs list
* that continues up to the -- (if exists), and then paths.
*/
argc = parse_options(argc, argv, prefix, options, grep_usage,
PARSE_OPT_KEEP_DASHDASH |
PARSE_OPT_STOP_AT_NON_OPTION);
grep_commit_pattern_type(pattern_type_arg, &opt);
if (use_index && !startup_info->have_repository) {
int fallback = 0;
git_config_get_bool("grep.fallbacktonoindex", &fallback);
if (fallback)
use_index = 0;
else
/* die the same way as if we did it at the beginning */
setup_git_directory();
}
/*
* skip a -- separator; we know it cannot be
* separating revisions from pathnames if
* we haven't even had any patterns yet
*/
if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) {
argv++;
argc--;
}
/* First unrecognized non-option token */
if (argc > 0 && !opt.pattern_list) {
append_grep_pattern(&opt, argv[0], "command line", 0,
GREP_PATTERN);
argv++;
argc--;
}
if (show_in_pager == default_pager)
show_in_pager = git_pager(1);
if (show_in_pager) {
opt.color = 0;
opt.name_only = 1;
opt.null_following_name = 1;
opt.output_priv = &path_list;
opt.output = append_path;
string_list_append(&path_list, show_in_pager);
}
if (!opt.pattern_list)
die(_("no pattern given."));
/*
* We have to find "--" in a separate pass, because its presence
* influences how we will parse arguments that come before it.
*/
for (i = 0; i < argc; i++) {
if (!strcmp(argv[i], "--")) {
seen_dashdash = 1;
break;
}
}
/*
* Resolve any rev arguments. If we have a dashdash, then everything up
* to it must resolve as a rev. If not, then we stop at the first
* non-rev and assume everything else is a path.
*/
allow_revs = use_index && !untracked;
for (i = 0; i < argc; i++) {
const char *arg = argv[i];
struct object_id oid;
struct object_context oc;
struct object *object;
if (!strcmp(arg, "--")) {
i++;
break;
}
if (!allow_revs) {
if (seen_dashdash)
die(_("--no-index or --untracked cannot be used with revs"));
break;
}
if (get_oid_with_context(arg, GET_OID_RECORD_PATH,
&oid, &oc)) {
if (seen_dashdash)
die(_("unable to resolve revision: %s"), arg);
break;
}
object = parse_object_or_die(&oid, arg);
if (!seen_dashdash)
verify_non_filename(prefix, arg);
add_object_array_with_path(object, arg, &list, oc.mode, oc.path);
free(oc.path);
}
/*
* Anything left over is presumed to be a path. But in the non-dashdash
* "do what I mean" case, we verify and complain when that isn't true.
*/
if (!seen_dashdash) {
int j;
for (j = i; j < argc; j++)
verify_filename(prefix, argv[j], j == i && allow_revs);
}
parse_pathspec(&pathspec, 0,
PATHSPEC_PREFER_CWD |
(opt.max_depth != -1 ? PATHSPEC_MAXDEPTH_VALID : 0),
prefix, argv + i);
pathspec.max_depth = opt.max_depth;
pathspec.recursive = 1;
pathspec.recurse_submodules = !!recurse_submodules;
#ifndef NO_PTHREADS
if (list.nr || cached || show_in_pager)
num_threads = 0;
else if (num_threads == 0)
num_threads = GREP_NUM_THREADS_DEFAULT;
else if (num_threads < 0)
die(_("invalid number of threads specified (%d)"), num_threads);
if (num_threads == 1)
num_threads = 0;
#else
if (num_threads)
warning(_("no threads support, ignoring --threads"));
num_threads = 0;
#endif
if (!num_threads)
/*
* The compiled patterns on the main path are only
* used when not using threading. Otherwise
* start_threads() below calls compile_grep_patterns()
* for each thread.
*/
compile_grep_patterns(&opt);
#ifndef NO_PTHREADS
if (num_threads) {
if (!(opt.name_only || opt.unmatch_name_only || opt.count)
&& (opt.pre_context || opt.post_context ||
opt.file_break || opt.funcbody))
skip_first_line = 1;
start_threads(&opt);
}
#endif
if (show_in_pager && (cached || list.nr))
die(_("--open-files-in-pager only works on the worktree"));
if (show_in_pager && opt.pattern_list && !opt.pattern_list->next) {
const char *pager = path_list.items[0].string;
int len = strlen(pager);
if (len > 4 && is_dir_sep(pager[len - 5]))
pager += len - 4;
if (opt.ignore_case && !strcmp("less", pager))
string_list_append(&path_list, "-I");
if (!strcmp("less", pager) || !strcmp("vi", pager)) {
struct strbuf buf = STRBUF_INIT;
strbuf_addf(&buf, "+/%s%s",
strcmp("less", pager) ? "" : "*",
opt.pattern_list->pattern);
string_list_append(&path_list, buf.buf);
strbuf_detach(&buf, NULL);
}
}
if (recurse_submodules && (!use_index || untracked))
die(_("option not supported with --recurse-submodules."));
if (!show_in_pager && !opt.status_only)
setup_pager();
if (!use_index && (untracked || cached))
die(_("--cached or --untracked cannot be used with --no-index."));
if (!use_index || untracked) {
int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
hit = grep_directory(&opt, &pathspec, use_exclude, use_index);
} else if (0 <= opt_exclude) {
die(_("--[no-]exclude-standard cannot be used for tracked contents."));
} else if (!list.nr) {
if (!cached)
setup_work_tree();
hit = grep_cache(&opt, the_repository, &pathspec, cached);
} else {
if (cached)
die(_("both --cached and trees are given."));
hit = grep_objects(&opt, &pathspec, the_repository, &list);
}
if (num_threads)
hit |= wait_all();
if (hit && show_in_pager)
run_pager(&opt, prefix);
clear_pathspec(&pathspec);
free_grep_patterns(&opt);
return !hit;
}
/*
* It is okay if dst == src, but they should not overlap otherwise.
*
* Performs the following normalizations on src, storing the result in dst:
* - Ensures that components are separated by '/' (Windows only)
* - Squashes sequences of '/' except "//server/share" on Windows
* - Removes "." components.
* - Removes ".." components, and the components the precede them.
* Returns failure (non-zero) if a ".." component appears as first path
* component anytime during the normalization. Otherwise, returns success (0).
*
* Note that this function is purely textual. It does not follow symlinks,
* verify the existence of the path, or make any system calls.
*
* prefix_len != NULL is for a specific case of prefix_pathspec():
* assume that src == dst and src[0..prefix_len-1] is already
* normalized, any time "../" eats up to the prefix_len part,
* prefix_len is reduced. In the end prefix_len is the remaining
* prefix that has not been overridden by user pathspec.
*
* NEEDSWORK: This function doesn't perform normalization w.r.t. trailing '/'.
* For everything but the root folder itself, the normalized path should not
* end with a '/', then the callers need to be fixed up accordingly.
*
*/
int normalize_path_copy_len(char *dst, const char *src, int *prefix_len)
{
char *dst0;
const char *end;
/*
* Copy initial part of absolute path: "/", "C:/", "//server/share/".
*/
end = src + offset_1st_component(src);
while (src < end) {
char c = *src++;
if (is_dir_sep(c))
c = '/';
*dst++ = c;
}
dst0 = dst;
while (is_dir_sep(*src))
src++;
for (;;) {
char c = *src;
/*
* A path component that begins with . could be
* special:
* (1) "." and ends -- ignore and terminate.
* (2) "./" -- ignore them, eat slash and continue.
* (3) ".." and ends -- strip one and terminate.
* (4) "../" -- strip one, eat slash and continue.
*/
if (c == '.') {
if (!src[1]) {
/* (1) */
src++;
} else if (is_dir_sep(src[1])) {
/* (2) */
src += 2;
while (is_dir_sep(*src))
src++;
continue;
} else if (src[1] == '.') {
if (!src[2]) {
/* (3) */
src += 2;
goto up_one;
} else if (is_dir_sep(src[2])) {
/* (4) */
src += 3;
while (is_dir_sep(*src))
src++;
goto up_one;
}
}
}
/* copy up to the next '/', and eat all '/' */
while ((c = *src++) != '\0' && !is_dir_sep(c))
*dst++ = c;
if (is_dir_sep(c)) {
*dst++ = '/';
while (is_dir_sep(c))
c = *src++;
src--;
} else if (!c)
break;
continue;
up_one:
/*
* dst0..dst is prefix portion, and dst[-1] is '/';
* go up one level.
*/
dst--; /* go to trailing '/' */
if (dst <= dst0)
return -1;
/* Windows: dst[-1] cannot be backslash anymore */
while (dst0 < dst && dst[-1] != '/')
dst--;
if (prefix_len && *prefix_len > dst - dst0)
*prefix_len = dst - dst0;
}
*dst = '\0';
return 0;
}
void strbuf_trim_trailing_dir_sep(struct strbuf *sb)
{
while (sb->len > 0 && is_dir_sep((unsigned char)sb->buf[sb->len - 1]))
sb->len--;
sb->buf[sb->len] = '\0';
}
static int run_dir_diff(const char *extcmd, int symlinks, const char *prefix,
int argc, const char **argv)
{
char tmpdir[PATH_MAX];
struct strbuf info = STRBUF_INIT, lpath = STRBUF_INIT;
struct strbuf rpath = STRBUF_INIT, buf = STRBUF_INIT;
struct strbuf ldir = STRBUF_INIT, rdir = STRBUF_INIT;
struct strbuf wtdir = STRBUF_INIT;
char *lbase_dir, *rbase_dir;
size_t ldir_len, rdir_len, wtdir_len;
const char *workdir, *tmp;
int ret = 0, i;
FILE *fp;
struct hashmap working_tree_dups, submodules, symlinks2;
struct hashmap_iter iter;
struct pair_entry *entry;
struct index_state wtindex;
struct checkout lstate, rstate;
int rc, flags = RUN_GIT_CMD, err = 0;
struct child_process child = CHILD_PROCESS_INIT;
const char *helper_argv[] = { "difftool--helper", NULL, NULL, NULL };
struct hashmap wt_modified, tmp_modified;
int indices_loaded = 0;
workdir = get_git_work_tree();
/* Setup temp directories */
tmp = getenv("TMPDIR");
xsnprintf(tmpdir, sizeof(tmpdir), "%s/git-difftool.XXXXXX", tmp ? tmp : "/tmp");
if (!mkdtemp(tmpdir))
return error("could not create '%s'", tmpdir);
strbuf_addf(&ldir, "%s/left/", tmpdir);
strbuf_addf(&rdir, "%s/right/", tmpdir);
strbuf_addstr(&wtdir, workdir);
if (!wtdir.len || !is_dir_sep(wtdir.buf[wtdir.len - 1]))
strbuf_addch(&wtdir, '/');
mkdir(ldir.buf, 0700);
mkdir(rdir.buf, 0700);
memset(&wtindex, 0, sizeof(wtindex));
memset(&lstate, 0, sizeof(lstate));
lstate.base_dir = lbase_dir = xstrdup(ldir.buf);
lstate.base_dir_len = ldir.len;
lstate.force = 1;
memset(&rstate, 0, sizeof(rstate));
rstate.base_dir = rbase_dir = xstrdup(rdir.buf);
rstate.base_dir_len = rdir.len;
rstate.force = 1;
ldir_len = ldir.len;
rdir_len = rdir.len;
wtdir_len = wtdir.len;
hashmap_init(&working_tree_dups,
(hashmap_cmp_fn)working_tree_entry_cmp, NULL, 0);
hashmap_init(&submodules, (hashmap_cmp_fn)pair_cmp, NULL, 0);
hashmap_init(&symlinks2, (hashmap_cmp_fn)pair_cmp, NULL, 0);
child.no_stdin = 1;
child.git_cmd = 1;
child.use_shell = 0;
child.clean_on_exit = 1;
child.dir = prefix;
child.out = -1;
argv_array_pushl(&child.args, "diff", "--raw", "--no-abbrev", "-z",
NULL);
for (i = 0; i < argc; i++)
argv_array_push(&child.args, argv[i]);
if (start_command(&child))
die("could not obtain raw diff");
fp = xfdopen(child.out, "r");
/* Build index info for left and right sides of the diff */
i = 0;
while (!strbuf_getline_nul(&info, fp)) {
int lmode, rmode;
struct object_id loid, roid;
char status;
const char *src_path, *dst_path;
if (starts_with(info.buf, "::"))
die(N_("combined diff formats('-c' and '--cc') are "
"not supported in\n"
"directory diff mode('-d' and '--dir-diff')."));
if (parse_index_info(info.buf, &lmode, &rmode, &loid, &roid,
&status))
break;
if (strbuf_getline_nul(&lpath, fp))
break;
src_path = lpath.buf;
i++;
if (status != 'C' && status != 'R') {
dst_path = src_path;
} else {
if (strbuf_getline_nul(&rpath, fp))
break;
dst_path = rpath.buf;
}
if (S_ISGITLINK(lmode) || S_ISGITLINK(rmode)) {
strbuf_reset(&buf);
strbuf_addf(&buf, "Subproject commit %s",
oid_to_hex(&loid));
add_left_or_right(&submodules, src_path, buf.buf, 0);
strbuf_reset(&buf);
strbuf_addf(&buf, "Subproject commit %s",
oid_to_hex(&roid));
if (!oidcmp(&loid, &roid))
strbuf_addstr(&buf, "-dirty");
add_left_or_right(&submodules, dst_path, buf.buf, 1);
continue;
}
if (S_ISLNK(lmode)) {
char *content = get_symlink(&loid, src_path);
add_left_or_right(&symlinks2, src_path, content, 0);
free(content);
}
if (S_ISLNK(rmode)) {
char *content = get_symlink(&roid, dst_path);
add_left_or_right(&symlinks2, dst_path, content, 1);
free(content);
}
if (lmode && status != 'C') {
if (checkout_path(lmode, &loid, src_path, &lstate)) {
ret = error("could not write '%s'", src_path);
goto finish;
}
}
if (rmode && !S_ISLNK(rmode)) {
struct working_tree_entry *entry;
/* Avoid duplicate working_tree entries */
FLEX_ALLOC_STR(entry, path, dst_path);
hashmap_entry_init(entry, strhash(dst_path));
if (hashmap_get(&working_tree_dups, entry, NULL)) {
free(entry);
continue;
}
hashmap_add(&working_tree_dups, entry);
if (!use_wt_file(workdir, dst_path, &roid)) {
if (checkout_path(rmode, &roid, dst_path,
&rstate)) {
ret = error("could not write '%s'",
dst_path);
goto finish;
}
} else if (!is_null_oid(&roid)) {
/*
* Changes in the working tree need special
* treatment since they are not part of the
* index.
*/
struct cache_entry *ce2 =
make_cache_entry(rmode, roid.hash,
dst_path, 0, 0);
add_index_entry(&wtindex, ce2,
ADD_CACHE_JUST_APPEND);
add_path(&rdir, rdir_len, dst_path);
if (ensure_leading_directories(rdir.buf)) {
ret = error("could not create "
"directory for '%s'",
dst_path);
goto finish;
}
add_path(&wtdir, wtdir_len, dst_path);
if (symlinks) {
if (symlink(wtdir.buf, rdir.buf)) {
ret = error_errno("could not symlink '%s' to '%s'", wtdir.buf, rdir.buf);
goto finish;
}
} else {
struct stat st;
if (stat(wtdir.buf, &st))
st.st_mode = 0644;
if (copy_file(rdir.buf, wtdir.buf,
st.st_mode)) {
ret = error("could not copy '%s' to '%s'", wtdir.buf, rdir.buf);
goto finish;
}
}
}
}
}
fclose(fp);
fp = NULL;
if (finish_command(&child)) {
ret = error("error occurred running diff --raw");
goto finish;
}
if (!i)
goto finish;
/*
* Changes to submodules require special treatment.This loop writes a
* temporary file to both the left and right directories to show the
* change in the recorded SHA1 for the submodule.
*/
hashmap_iter_init(&submodules, &iter);
while ((entry = hashmap_iter_next(&iter))) {
if (*entry->left) {
add_path(&ldir, ldir_len, entry->path);
ensure_leading_directories(ldir.buf);
write_file(ldir.buf, "%s", entry->left);
}
if (*entry->right) {
add_path(&rdir, rdir_len, entry->path);
ensure_leading_directories(rdir.buf);
write_file(rdir.buf, "%s", entry->right);
}
}
/*
* Symbolic links require special treatment.The standard "git diff"
* shows only the link itself, not the contents of the link target.
* This loop replicates that behavior.
*/
hashmap_iter_init(&symlinks2, &iter);
while ((entry = hashmap_iter_next(&iter))) {
if (*entry->left) {
add_path(&ldir, ldir_len, entry->path);
ensure_leading_directories(ldir.buf);
write_file(ldir.buf, "%s", entry->left);
}
if (*entry->right) {
add_path(&rdir, rdir_len, entry->path);
ensure_leading_directories(rdir.buf);
write_file(rdir.buf, "%s", entry->right);
}
}
strbuf_release(&buf);
strbuf_setlen(&ldir, ldir_len);
helper_argv[1] = ldir.buf;
strbuf_setlen(&rdir, rdir_len);
helper_argv[2] = rdir.buf;
if (extcmd) {
helper_argv[0] = extcmd;
flags = 0;
} else
setenv("GIT_DIFFTOOL_DIRDIFF", "true", 1);
rc = run_command_v_opt(helper_argv, flags);
/*
* If the diff includes working copy files and those
* files were modified during the diff, then the changes
* should be copied back to the working tree.
* Do not copy back files when symlinks are used and the
* external tool did not replace the original link with a file.
*
* These hashes are loaded lazily since they aren't needed
* in the common case of --symlinks and the difftool updating
* files through the symlink.
*/
hashmap_init(&wt_modified, (hashmap_cmp_fn)path_entry_cmp,
NULL, wtindex.cache_nr);
hashmap_init(&tmp_modified, (hashmap_cmp_fn)path_entry_cmp,
NULL, wtindex.cache_nr);
for (i = 0; i < wtindex.cache_nr; i++) {
struct hashmap_entry dummy;
const char *name = wtindex.cache[i]->name;
struct stat st;
add_path(&rdir, rdir_len, name);
if (lstat(rdir.buf, &st))
continue;
if ((symlinks && S_ISLNK(st.st_mode)) || !S_ISREG(st.st_mode))
continue;
if (!indices_loaded) {
static struct lock_file lock;
strbuf_reset(&buf);
strbuf_addf(&buf, "%s/wtindex", tmpdir);
if (hold_lock_file_for_update(&lock, buf.buf, 0) < 0 ||
write_locked_index(&wtindex, &lock, COMMIT_LOCK)) {
ret = error("could not write %s", buf.buf);
rollback_lock_file(&lock);
goto finish;
}
changed_files(&wt_modified, buf.buf, workdir);
strbuf_setlen(&rdir, rdir_len);
changed_files(&tmp_modified, buf.buf, rdir.buf);
add_path(&rdir, rdir_len, name);
indices_loaded = 1;
}
hashmap_entry_init(&dummy, strhash(name));
if (hashmap_get(&tmp_modified, &dummy, name)) {
add_path(&wtdir, wtdir_len, name);
if (hashmap_get(&wt_modified, &dummy, name)) {
warning(_("both files modified: '%s' and '%s'."),
wtdir.buf, rdir.buf);
warning(_("working tree file has been left."));
warning("%s", "");
err = 1;
} else if (unlink(wtdir.buf) ||
copy_file(wtdir.buf, rdir.buf, st.st_mode))
warning_errno(_("could not copy '%s' to '%s'"),
rdir.buf, wtdir.buf);
}
}
if (err) {
warning(_("temporary files exist in '%s'."), tmpdir);
warning(_("you may want to cleanup or recover these."));
exit(1);
} else
exit_cleanup(tmpdir, rc);
finish:
if (fp)
fclose(fp);
free(lbase_dir);
free(rbase_dir);
strbuf_release(&ldir);
strbuf_release(&rdir);
strbuf_release(&wtdir);
strbuf_release(&buf);
return ret;
}
int cmd_mv(int argc, const char **argv, const char *prefix)
{
int i, flags, gitmodules_modified = 0;
int verbose = 0, show_only = 0, force = 0, ignore_errors = 0;
struct option builtin_mv_options[] = {
OPT__VERBOSE(&verbose, N_("be verbose")),
OPT__DRY_RUN(&show_only, N_("dry run")),
OPT__FORCE(&force, N_("force move/rename even if target exists")),
OPT_BOOL('k', NULL, &ignore_errors, N_("skip move/rename errors")),
OPT_END(),
};
const char **source, **destination, **dest_path, **submodule_gitfile;
enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
struct stat st;
struct string_list src_for_dst = STRING_LIST_INIT_NODUP;
gitmodules_config();
git_config(git_default_config, NULL);
argc = parse_options(argc, argv, prefix, builtin_mv_options,
builtin_mv_usage, 0);
if (--argc < 1)
usage_with_options(builtin_mv_usage, builtin_mv_options);
hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
if (read_cache() < 0)
die(_("index file corrupt"));
source = internal_prefix_pathspec(prefix, argv, argc, 0);
modes = xcalloc(argc, sizeof(enum update_mode));
/*
* Keep trailing slash, needed to let
* "git mv file no-such-dir/" error out, except in the case
* "git mv directory no-such-dir/".
*/
flags = KEEP_TRAILING_SLASH;
if (argc == 1 && is_directory(argv[0]) && !is_directory(argv[1]))
flags = 0;
dest_path = internal_prefix_pathspec(prefix, argv + argc, 1, flags);
submodule_gitfile = xcalloc(argc, sizeof(char *));
if (dest_path[0][0] == '\0')
/* special case: "." was normalized to "" */
destination = internal_prefix_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
else if (!lstat(dest_path[0], &st) &&
S_ISDIR(st.st_mode)) {
dest_path[0] = add_slash(dest_path[0]);
destination = internal_prefix_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
} else {
if (argc != 1)
die(_("destination '%s' is not a directory"), dest_path[0]);
destination = dest_path;
}
/* Checking */
for (i = 0; i < argc; i++) {
const char *src = source[i], *dst = destination[i];
int length, src_is_dir;
const char *bad = NULL;
if (show_only)
printf(_("Checking rename of '%s' to '%s'\n"), src, dst);
length = strlen(src);
if (lstat(src, &st) < 0)
bad = _("bad source");
else if (!strncmp(src, dst, length) &&
(dst[length] == 0 || dst[length] == '/')) {
bad = _("can not move directory into itself");
} else if ((src_is_dir = S_ISDIR(st.st_mode))
&& lstat(dst, &st) == 0)
bad = _("cannot move directory over file");
else if (src_is_dir) {
int first = cache_name_pos(src, length), last;
if (first >= 0)
prepare_move_submodule(src, first,
submodule_gitfile + i);
else if (index_range_of_same_dir(src, length,
&first, &last) < 1)
bad = _("source directory is empty");
else { /* last - first >= 1 */
int j, dst_len, n;
modes[i] = WORKING_DIRECTORY;
n = argc + last - first;
REALLOC_ARRAY(source, n);
REALLOC_ARRAY(destination, n);
REALLOC_ARRAY(modes, n);
REALLOC_ARRAY(submodule_gitfile, n);
dst = add_slash(dst);
dst_len = strlen(dst);
for (j = 0; j < last - first; j++) {
const char *path = active_cache[first + j]->name;
source[argc + j] = path;
destination[argc + j] =
prefix_path(dst, dst_len, path + length + 1);
modes[argc + j] = INDEX;
submodule_gitfile[argc + j] = NULL;
}
argc += last - first;
}
} else if (cache_name_pos(src, length) < 0)
bad = _("not under version control");
else if (lstat(dst, &st) == 0 &&
(!ignore_case || strcasecmp(src, dst))) {
bad = _("destination exists");
if (force) {
/*
* only files can overwrite each other:
* check both source and destination
*/
if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) {
if (verbose)
warning(_("overwriting '%s'"), dst);
bad = NULL;
} else
bad = _("Cannot overwrite");
}
} else if (string_list_has_string(&src_for_dst, dst))
bad = _("multiple sources for the same target");
else if (is_dir_sep(dst[strlen(dst) - 1]))
bad = _("destination directory does not exist");
else
string_list_insert(&src_for_dst, dst);
if (!bad)
continue;
if (!ignore_errors)
die(_("%s, source=%s, destination=%s"),
bad, src, dst);
if (--argc > 0) {
int n = argc - i;
memmove(source + i, source + i + 1,
n * sizeof(char *));
memmove(destination + i, destination + i + 1,
n * sizeof(char *));
memmove(modes + i, modes + i + 1,
n * sizeof(enum update_mode));
memmove(submodule_gitfile + i, submodule_gitfile + i + 1,
n * sizeof(char *));
i--;
}
}
for (i = 0; i < argc; i++) {
const char *src = source[i], *dst = destination[i];
enum update_mode mode = modes[i];
int pos;
if (show_only || verbose)
printf(_("Renaming %s to %s\n"), src, dst);
if (show_only)
continue;
if (mode != INDEX && rename(src, dst) < 0) {
if (ignore_errors)
continue;
die_errno(_("renaming '%s' failed"), src);
}
if (submodule_gitfile[i]) {
if (submodule_gitfile[i] != SUBMODULE_WITH_GITDIR)
connect_work_tree_and_git_dir(dst, submodule_gitfile[i]);
if (!update_path_in_gitmodules(src, dst))
gitmodules_modified = 1;
}
if (mode == WORKING_DIRECTORY)
continue;
pos = cache_name_pos(src, strlen(src));
assert(pos >= 0);
if (!show_only)
rename_cache_entry_at(pos, dst);
}
if (gitmodules_modified)
stage_updated_gitmodules();
if (active_cache_changed &&
write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
die(_("Unable to write new index file"));
return 0;
}
int cmd_grep(int argc, const char **argv, const char *prefix)
{
int hit = 0;
int cached = 0, untracked = 0, opt_exclude = -1;
int seen_dashdash = 0;
int external_grep_allowed__ignored;
const char *show_in_pager = NULL, *default_pager = "dummy";
struct grep_opt opt;
struct object_array list = OBJECT_ARRAY_INIT;
const char **paths = NULL;
struct pathspec pathspec;
struct string_list path_list = STRING_LIST_INIT_NODUP;
int i;
int dummy;
int use_index = 1;
int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED;
struct option options[] = {
OPT_BOOLEAN(0, "cached", &cached,
N_("search in index instead of in the work tree")),
OPT_NEGBIT(0, "no-index", &use_index,
N_("find in contents not managed by git"), 1),
OPT_BOOLEAN(0, "untracked", &untracked,
N_("search in both tracked and untracked files")),
OPT_SET_INT(0, "exclude-standard", &opt_exclude,
N_("search also in ignored files"), 1),
OPT_GROUP(""),
OPT_BOOLEAN('v', "invert-match", &opt.invert,
N_("show non-matching lines")),
OPT_BOOLEAN('i', "ignore-case", &opt.ignore_case,
N_("case insensitive matching")),
OPT_BOOLEAN('w', "word-regexp", &opt.word_regexp,
N_("match patterns only at word boundaries")),
OPT_SET_INT('a', "text", &opt.binary,
N_("process binary files as text"), GREP_BINARY_TEXT),
OPT_SET_INT('I', NULL, &opt.binary,
N_("don't match patterns in binary files"),
GREP_BINARY_NOMATCH),
{ OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"),
N_("descend at most <depth> levels"), PARSE_OPT_NONEG,
NULL, 1 },
OPT_GROUP(""),
OPT_SET_INT('E', "extended-regexp", &pattern_type_arg,
N_("use extended POSIX regular expressions"),
GREP_PATTERN_TYPE_ERE),
OPT_SET_INT('G', "basic-regexp", &pattern_type_arg,
N_("use basic POSIX regular expressions (default)"),
GREP_PATTERN_TYPE_BRE),
OPT_SET_INT('F', "fixed-strings", &pattern_type_arg,
N_("interpret patterns as fixed strings"),
GREP_PATTERN_TYPE_FIXED),
OPT_SET_INT('P', "perl-regexp", &pattern_type_arg,
N_("use Perl-compatible regular expressions"),
GREP_PATTERN_TYPE_PCRE),
OPT_GROUP(""),
OPT_BOOLEAN('n', "line-number", &opt.linenum, N_("show line numbers")),
OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1),
OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1),
OPT_NEGBIT(0, "full-name", &opt.relative,
N_("show filenames relative to top directory"), 1),
OPT_BOOLEAN('l', "files-with-matches", &opt.name_only,
N_("show only filenames instead of matching lines")),
OPT_BOOLEAN(0, "name-only", &opt.name_only,
N_("synonym for --files-with-matches")),
OPT_BOOLEAN('L', "files-without-match",
&opt.unmatch_name_only,
N_("show only the names of files without match")),
OPT_BOOLEAN('z', "null", &opt.null_following_name,
N_("print NUL after filenames")),
OPT_BOOLEAN('c', "count", &opt.count,
N_("show the number of matches instead of matching lines")),
OPT__COLOR(&opt.color, N_("highlight matches")),
OPT_BOOLEAN(0, "break", &opt.file_break,
N_("print empty line between matches from different files")),
OPT_BOOLEAN(0, "heading", &opt.heading,
N_("show filename only once above matches from same file")),
OPT_GROUP(""),
OPT_CALLBACK('C', "context", &opt, N_("n"),
N_("show <n> context lines before and after matches"),
context_callback),
OPT_INTEGER('B', "before-context", &opt.pre_context,
N_("show <n> context lines before matches")),
OPT_INTEGER('A', "after-context", &opt.post_context,
N_("show <n> context lines after matches")),
OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"),
context_callback),
OPT_BOOLEAN('p', "show-function", &opt.funcname,
N_("show a line with the function name before matches")),
OPT_BOOLEAN('W', "function-context", &opt.funcbody,
N_("show the surrounding function")),
OPT_GROUP(""),
OPT_CALLBACK('f', NULL, &opt, N_("file"),
N_("read patterns from file"), file_callback),
{ OPTION_CALLBACK, 'e', NULL, &opt, N_("pattern"),
N_("match <pattern>"), PARSE_OPT_NONEG, pattern_callback },
{ OPTION_CALLBACK, 0, "and", &opt, NULL,
N_("combine patterns specified with -e"),
PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback },
OPT_BOOLEAN(0, "or", &dummy, ""),
{ OPTION_CALLBACK, 0, "not", &opt, NULL, "",
PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback },
{ OPTION_CALLBACK, '(', NULL, &opt, NULL, "",
PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
open_callback },
{ OPTION_CALLBACK, ')', NULL, &opt, NULL, "",
PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
close_callback },
OPT__QUIET(&opt.status_only,
N_("indicate hit with exit status without output")),
OPT_BOOLEAN(0, "all-match", &opt.all_match,
N_("show only matches from files that match all patterns")),
{ OPTION_SET_INT, 0, "debug", &opt.debug, NULL,
N_("show parse tree for grep expression"),
PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1 },
OPT_GROUP(""),
{ OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager,
N_("pager"), N_("show matching files in the pager"),
PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager },
OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed__ignored,
N_("allow calling of grep(1) (ignored by this build)")),
{ OPTION_CALLBACK, 0, "help-all", &options, NULL, N_("show usage"),
PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback },
OPT_END()
};
/*
* 'git grep -h', unlike 'git grep -h <pattern>', is a request
* to show usage information and exit.
*/
if (argc == 2 && !strcmp(argv[1], "-h"))
usage_with_options(grep_usage, options);
init_grep_defaults();
git_config(grep_cmd_config, NULL);
grep_init(&opt, prefix);
/*
* If there is no -- then the paths must exist in the working
* tree. If there is no explicit pattern specified with -e or
* -f, we take the first unrecognized non option to be the
* pattern, but then what follows it must be zero or more
* valid refs up to the -- (if exists), and then existing
* paths. If there is an explicit pattern, then the first
* unrecognized non option is the beginning of the refs list
* that continues up to the -- (if exists), and then paths.
*/
argc = parse_options(argc, argv, prefix, options, grep_usage,
PARSE_OPT_KEEP_DASHDASH |
PARSE_OPT_STOP_AT_NON_OPTION |
PARSE_OPT_NO_INTERNAL_HELP);
grep_commit_pattern_type(pattern_type_arg, &opt);
if (use_index && !startup_info->have_repository)
/* die the same way as if we did it at the beginning */
setup_git_directory();
/*
* skip a -- separator; we know it cannot be
* separating revisions from pathnames if
* we haven't even had any patterns yet
*/
if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) {
argv++;
argc--;
}
/* First unrecognized non-option token */
if (argc > 0 && !opt.pattern_list) {
append_grep_pattern(&opt, argv[0], "command line", 0,
GREP_PATTERN);
argv++;
argc--;
}
if (show_in_pager == default_pager)
show_in_pager = git_pager(1);
if (show_in_pager) {
opt.color = 0;
opt.name_only = 1;
opt.null_following_name = 1;
opt.output_priv = &path_list;
opt.output = append_path;
string_list_append(&path_list, show_in_pager);
use_threads = 0;
}
if ((opt.binary & GREP_BINARY_NOMATCH))
use_threads = 0;
if (!opt.pattern_list)
die(_("no pattern given."));
if (!opt.fixed && opt.ignore_case)
opt.regflags |= REG_ICASE;
compile_grep_patterns(&opt);
/* Check revs and then paths */
for (i = 0; i < argc; i++) {
const char *arg = argv[i];
unsigned char sha1[20];
/* Is it a rev? */
if (!get_sha1(arg, sha1)) {
struct object *object = parse_object(sha1);
if (!object)
die(_("bad object %s"), arg);
add_object_array(object, arg, &list);
continue;
}
if (!strcmp(arg, "--")) {
i++;
seen_dashdash = 1;
}
break;
}
#ifndef NO_PTHREADS
if (list.nr || cached || online_cpus() == 1)
use_threads = 0;
#else
use_threads = 0;
#endif
#ifndef NO_PTHREADS
if (use_threads) {
if (!(opt.name_only || opt.unmatch_name_only || opt.count)
&& (opt.pre_context || opt.post_context ||
opt.file_break || opt.funcbody))
skip_first_line = 1;
start_threads(&opt);
}
#endif
/* The rest are paths */
if (!seen_dashdash) {
int j;
for (j = i; j < argc; j++)
verify_filename(prefix, argv[j], j == i);
}
paths = get_pathspec(prefix, argv + i);
init_pathspec(&pathspec, paths);
pathspec.max_depth = opt.max_depth;
pathspec.recursive = 1;
if (show_in_pager && (cached || list.nr))
die(_("--open-files-in-pager only works on the worktree"));
if (show_in_pager && opt.pattern_list && !opt.pattern_list->next) {
const char *pager = path_list.items[0].string;
int len = strlen(pager);
if (len > 4 && is_dir_sep(pager[len - 5]))
pager += len - 4;
if (opt.ignore_case && !strcmp("less", pager))
string_list_append(&path_list, "-i");
if (!strcmp("less", pager) || !strcmp("vi", pager)) {
struct strbuf buf = STRBUF_INIT;
strbuf_addf(&buf, "+/%s%s",
strcmp("less", pager) ? "" : "*",
opt.pattern_list->pattern);
string_list_append(&path_list, buf.buf);
strbuf_detach(&buf, NULL);
}
}
if (!show_in_pager)
setup_pager();
if (!use_index && (untracked || cached))
die(_("--cached or --untracked cannot be used with --no-index."));
if (!use_index || untracked) {
int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
if (list.nr)
die(_("--no-index or --untracked cannot be used with revs."));
hit = grep_directory(&opt, &pathspec, use_exclude);
} else if (0 <= opt_exclude) {
die(_("--[no-]exclude-standard cannot be used for tracked contents."));
} else if (!list.nr) {
if (!cached)
setup_work_tree();
hit = grep_cache(&opt, &pathspec, cached);
} else {
if (cached)
die(_("both --cached and trees are given."));
hit = grep_objects(&opt, &pathspec, &list);
}
if (use_threads)
hit |= wait_all();
if (hit && show_in_pager)
run_pager(&opt, prefix);
free_grep_patterns(&opt);
return !hit;
}
int cmd_mv(int argc, const char **argv, const char *prefix)
{
int i, newfd, gitmodules_modified = 0;
int verbose = 0, show_only = 0, force = 0, ignore_errors = 0;
struct option builtin_mv_options[] = {
OPT__VERBOSE(&verbose, N_("be verbose")),
OPT__DRY_RUN(&show_only, N_("dry run")),
OPT__FORCE(&force, N_("force move/rename even if target exists")),
OPT_BOOL('k', NULL, &ignore_errors, N_("skip move/rename errors")),
OPT_END(),
};
const char **source, **destination, **dest_path, **submodule_gitfile;
enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
struct stat st;
struct string_list src_for_dst = STRING_LIST_INIT_NODUP;
gitmodules_config();
git_config(git_default_config, NULL);
argc = parse_options(argc, argv, prefix, builtin_mv_options,
builtin_mv_usage, 0);
if (--argc < 1)
usage_with_options(builtin_mv_usage, builtin_mv_options);
newfd = hold_locked_index(&lock_file, 1);
if (read_cache() < 0)
die(_("index file corrupt"));
source = internal_copy_pathspec(prefix, argv, argc, 0);
modes = xcalloc(argc, sizeof(enum update_mode));
/*
* Keep trailing slash, needed to let
* "git mv file no-such-dir/" error out.
*/
dest_path = internal_copy_pathspec(prefix, argv + argc, 1,
KEEP_TRAILING_SLASH);
submodule_gitfile = xcalloc(argc, sizeof(char *));
if (dest_path[0][0] == '\0')
/* special case: "." was normalized to "" */
destination = internal_copy_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
else if (!lstat(dest_path[0], &st) &&
S_ISDIR(st.st_mode)) {
dest_path[0] = add_slash(dest_path[0]);
destination = internal_copy_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
} else {
if (argc != 1)
die("destination '%s' is not a directory", dest_path[0]);
destination = dest_path;
}
/* Checking */
for (i = 0; i < argc; i++) {
const char *src = source[i], *dst = destination[i];
int length, src_is_dir;
const char *bad = NULL;
if (show_only)
printf(_("Checking rename of '%s' to '%s'\n"), src, dst);
length = strlen(src);
if (lstat(src, &st) < 0)
bad = _("bad source");
else if (!strncmp(src, dst, length) &&
(dst[length] == 0 || dst[length] == '/')) {
bad = _("can not move directory into itself");
} else if ((src_is_dir = S_ISDIR(st.st_mode))
&& lstat(dst, &st) == 0)
bad = _("cannot move directory over file");
else if (src_is_dir) {
int first = cache_name_pos(src, length);
if (first >= 0) {
struct strbuf submodule_dotgit = STRBUF_INIT;
if (!S_ISGITLINK(active_cache[first]->ce_mode))
die (_("Huh? Directory %s is in index and no submodule?"), src);
if (!is_staging_gitmodules_ok())
die (_("Please, stage your changes to .gitmodules or stash them to proceed"));
strbuf_addf(&submodule_dotgit, "%s/.git", src);
submodule_gitfile[i] = read_gitfile(submodule_dotgit.buf);
if (submodule_gitfile[i])
submodule_gitfile[i] = xstrdup(submodule_gitfile[i]);
else
submodule_gitfile[i] = SUBMODULE_WITH_GITDIR;
strbuf_release(&submodule_dotgit);
} else {
const char *src_w_slash = add_slash(src);
int last, len_w_slash = length + 1;
modes[i] = WORKING_DIRECTORY;
first = cache_name_pos(src_w_slash, len_w_slash);
if (first >= 0)
die (_("Huh? %.*s is in index?"),
len_w_slash, src_w_slash);
first = -1 - first;
for (last = first; last < active_nr; last++) {
const char *path = active_cache[last]->name;
if (strncmp(path, src_w_slash, len_w_slash))
break;
}
free((char *)src_w_slash);
if (last - first < 1)
bad = _("source directory is empty");
else {
int j, dst_len;
if (last - first > 0) {
source = xrealloc(source,
(argc + last - first)
* sizeof(char *));
destination = xrealloc(destination,
(argc + last - first)
* sizeof(char *));
modes = xrealloc(modes,
(argc + last - first)
* sizeof(enum update_mode));
submodule_gitfile = xrealloc(submodule_gitfile,
(argc + last - first)
* sizeof(char *));
}
dst = add_slash(dst);
dst_len = strlen(dst);
for (j = 0; j < last - first; j++) {
const char *path =
active_cache[first + j]->name;
source[argc + j] = path;
destination[argc + j] =
prefix_path(dst, dst_len,
path + length + 1);
modes[argc + j] = INDEX;
submodule_gitfile[argc + j] = NULL;
}
argc += last - first;
}
}
} else if (cache_name_pos(src, length) < 0)
bad = _("not under version control");
else if (lstat(dst, &st) == 0) {
bad = _("destination exists");
if (force) {
/*
* only files can overwrite each other:
* check both source and destination
*/
if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) {
if (verbose)
warning(_("overwriting '%s'"), dst);
bad = NULL;
} else
bad = _("Cannot overwrite");
}
} else if (string_list_has_string(&src_for_dst, dst))
bad = _("multiple sources for the same target");
else if (is_dir_sep(dst[strlen(dst) - 1]))
bad = _("destination directory does not exist");
else
string_list_insert(&src_for_dst, dst);
if (bad) {
if (ignore_errors) {
if (--argc > 0) {
memmove(source + i, source + i + 1,
(argc - i) * sizeof(char *));
memmove(destination + i,
destination + i + 1,
(argc - i) * sizeof(char *));
memmove(modes + i, modes + i + 1,
(argc - i) * sizeof(enum update_mode));
memmove(submodule_gitfile + i,
submodule_gitfile + i + 1,
(argc - i) * sizeof(char *));
i--;
}
} else
die (_("%s, source=%s, destination=%s"),
bad, src, dst);
}
}
for (i = 0; i < argc; i++) {
const char *src = source[i], *dst = destination[i];
enum update_mode mode = modes[i];
int pos;
if (show_only || verbose)
printf(_("Renaming %s to %s\n"), src, dst);
if (!show_only && mode != INDEX) {
if (rename(src, dst) < 0 && !ignore_errors)
die_errno (_("renaming '%s' failed"), src);
if (submodule_gitfile[i]) {
if (submodule_gitfile[i] != SUBMODULE_WITH_GITDIR)
connect_work_tree_and_git_dir(dst, submodule_gitfile[i]);
if (!update_path_in_gitmodules(src, dst))
gitmodules_modified = 1;
}
}
if (mode == WORKING_DIRECTORY)
continue;
pos = cache_name_pos(src, strlen(src));
assert(pos >= 0);
if (!show_only)
rename_cache_entry_at(pos, dst);
}
if (gitmodules_modified)
stage_updated_gitmodules();
if (active_cache_changed) {
if (write_cache(newfd, active_cache, active_nr) ||
commit_locked_index(&lock_file))
die(_("Unable to write new index file"));
}
return 0;
}
/* strip arbitrary amount of directory separators at end of path */
static inline int chomp_trailing_dir_sep(const char *path, int len)
{
while (len && is_dir_sep(path[len - 1]))
len--;
return len;
}
int offset_1st_component(const char *path)
{
if (has_dos_drive_prefix(path))
return 2 + is_dir_sep(path[2]);
return is_dir_sep(path[0]);
}
/*
* Give path as relative to prefix.
*
* The strbuf may or may not be used, so do not assume it contains the
* returned path.
*/
const char *relative_path(const char *in, const char *prefix,
struct strbuf *sb)
{
int in_len = in ? strlen(in) : 0;
int prefix_len = prefix ? strlen(prefix) : 0;
int in_off = 0;
int prefix_off = 0;
int i = 0, j = 0;
if (!in_len)
return "./";
else if (!prefix_len)
return in;
if (have_same_root(in, prefix))
/* bypass dos_drive, for "c:" is identical to "C:" */
i = j = has_dos_drive_prefix(in);
else {
return in;
}
while (i < prefix_len && j < in_len && prefix[i] == in[j]) {
if (is_dir_sep(prefix[i])) {
while (is_dir_sep(prefix[i]))
i++;
while (is_dir_sep(in[j]))
j++;
prefix_off = i;
in_off = j;
} else {
i++;
j++;
}
}
if (
/* "prefix" seems like prefix of "in" */
i >= prefix_len &&
/*
* but "/foo" is not a prefix of "/foobar"
* (i.e. prefix not end with '/')
*/
prefix_off < prefix_len) {
if (j >= in_len) {
/* in="/a/b", prefix="/a/b" */
in_off = in_len;
} else if (is_dir_sep(in[j])) {
/* in="/a/b/c", prefix="/a/b" */
while (is_dir_sep(in[j]))
j++;
in_off = j;
} else {
/* in="/a/bbb/c", prefix="/a/b" */
i = prefix_off;
}
} else if (
/* "in" is short than "prefix" */
j >= in_len &&
/* "in" not end with '/' */
in_off < in_len) {
if (is_dir_sep(prefix[i])) {
/* in="/a/b", prefix="/a/b/c/" */
while (is_dir_sep(prefix[i]))
i++;
in_off = in_len;
}
}
in += in_off;
in_len -= in_off;
if (i >= prefix_len) {
if (!in_len)
return "./";
else
return in;
}
strbuf_reset(sb);
strbuf_grow(sb, in_len);
while (i < prefix_len) {
if (is_dir_sep(prefix[i])) {
strbuf_addstr(sb, "../");
while (is_dir_sep(prefix[i]))
i++;
continue;
}
i++;
}
if (!is_dir_sep(prefix[prefix_len - 1]))
strbuf_addstr(sb, "../");
strbuf_addstr(sb, in);
return sb->buf;
}
static int sanitary_path_copy(char *dst, const char *src)
{
char *dst0;
if (has_dos_drive_prefix(src)) {
*dst++ = *src++;
*dst++ = *src++;
}
dst0 = dst;
if (is_dir_sep(*src)) {
*dst++ = '/';
while (is_dir_sep(*src))
src++;
}
for (;;) {
char c = *src;
/*
* A path component that begins with . could be
* special:
* (1) "." and ends -- ignore and terminate.
* (2) "./" -- ignore them, eat slash and continue.
* (3) ".." and ends -- strip one and terminate.
* (4) "../" -- strip one, eat slash and continue.
*/
if (c == '.') {
if (!src[1]) {
/* (1) */
src++;
} else if (is_dir_sep(src[1])) {
/* (2) */
src += 2;
while (is_dir_sep(*src))
src++;
continue;
} else if (src[1] == '.') {
if (!src[2]) {
/* (3) */
src += 2;
goto up_one;
} else if (is_dir_sep(src[2])) {
/* (4) */
src += 3;
while (is_dir_sep(*src))
src++;
goto up_one;
}
}
}
/* copy up to the next '/', and eat all '/' */
while ((c = *src++) != '\0' && !is_dir_sep(c))
*dst++ = c;
if (is_dir_sep(c)) {
*dst++ = '/';
while (is_dir_sep(c))
c = *src++;
src--;
} else if (!c)
break;
continue;
up_one:
/*
* dst0..dst is prefix portion, and dst[-1] is '/';
* go up one level.
*/
dst -= 2; /* go past trailing '/' if any */
if (dst < dst0)
return -1;
while (1) {
if (dst <= dst0)
break;
c = *dst--;
if (c == '/') { /* MinGW: cannot be '\\' anymore */
dst += 2;
break;
}
}
}
*dst = '\0';
return 0;
}