#include "strbuf.h"
#include "quote.h"
-#define MAXNAME (256)
-
-typedef struct config_file {
- struct config_file *prev;
- FILE *f;
+struct config_source {
+ struct config_source *prev;
+ union {
+ FILE *file;
+ struct config_buf {
+ const char *buf;
+ size_t len;
+ size_t pos;
+ } buf;
+ } u;
const char *name;
+ int die_on_error;
int linenr;
int eof;
struct strbuf value;
- char var[MAXNAME];
-} config_file;
+ struct strbuf var;
+
+ int (*do_fgetc)(struct config_source *c);
+ int (*do_ungetc)(int c, struct config_source *conf);
+ long (*do_ftell)(struct config_source *c);
+};
-static config_file *cf;
+static struct config_source *cf;
static int zlib_compression_seen;
+static int config_file_fgetc(struct config_source *conf)
+{
+ return fgetc(conf->u.file);
+}
+
+static int config_file_ungetc(int c, struct config_source *conf)
+{
+ return ungetc(c, conf->u.file);
+}
+
+static long config_file_ftell(struct config_source *conf)
+{
+ return ftell(conf->u.file);
+}
+
+
+static int config_buf_fgetc(struct config_source *conf)
+{
+ if (conf->u.buf.pos < conf->u.buf.len)
+ return conf->u.buf.buf[conf->u.buf.pos++];
+
+ return EOF;
+}
+
+static int config_buf_ungetc(int c, struct config_source *conf)
+{
+ if (conf->u.buf.pos > 0)
+ return conf->u.buf.buf[--conf->u.buf.pos];
+
+ return EOF;
+}
+
+static long config_buf_ftell(struct config_source *conf)
+{
+ return conf->u.buf.pos;
+}
+
#define MAX_INCLUDE_DEPTH 10
static const char include_depth_advice[] =
"exceeded maximum include depth (%d) while including\n"
{
int ret = 0;
struct strbuf buf = STRBUF_INIT;
- char *expanded = expand_user_path(path);
+ char *expanded;
+ if (!path)
+ return config_error_nonbool("include.path");
+
+ expanded = expand_user_path(path);
if (!expanded)
return error("Could not expand include path '%s'", path);
path = expanded;
path = buf.buf;
}
- if (!access(path, R_OK)) {
+ if (!access_or_die(path, R_OK, 0)) {
if (++inc->depth > MAX_INCLUDE_DEPTH)
die(include_depth_advice, MAX_INCLUDE_DEPTH, path,
cf && cf->name ? cf->name : "the command line");
static int get_next_char(void)
{
- int c;
- FILE *f;
-
- c = '\n';
- if (cf && ((f = cf->f) != NULL)) {
- c = fgetc(f);
- if (c == '\r') {
- /* DOS like systems */
- c = fgetc(f);
- if (c != '\n') {
- ungetc(c, f);
- c = '\r';
- }
- }
- if (c == '\n')
- cf->linenr++;
- if (c == EOF) {
- cf->eof = 1;
- c = '\n';
+ int c = cf->do_fgetc(cf);
+
+ if (c == '\r') {
+ /* DOS like systems */
+ c = cf->do_fgetc(cf);
+ if (c != '\n') {
+ cf->do_ungetc(c, cf);
+ c = '\r';
}
}
+ if (c == '\n')
+ cf->linenr++;
+ if (c == EOF) {
+ cf->eof = 1;
+ c = '\n';
+ }
return c;
}
return isalnum(c) || c == '-';
}
-static int get_value(config_fn_t fn, void *data, char *name, unsigned int len)
+static int get_value(config_fn_t fn, void *data, struct strbuf *name)
{
int c;
char *value;
break;
if (!iskeychar(c))
break;
- name[len++] = tolower(c);
- if (len >= MAXNAME)
- return -1;
+ strbuf_addch(name, tolower(c));
}
- name[len] = 0;
+
while (c == ' ' || c == '\t')
c = get_next_char();
if (!value)
return -1;
}
- return fn(name, value, data);
+ return fn(name->buf, value, data);
}
-static int get_extended_base_var(char *name, int baselen, int c)
+static int get_extended_base_var(struct strbuf *name, int c)
{
do {
if (c == '\n')
/* We require the format to be '[base "extension"]' */
if (c != '"')
return -1;
- name[baselen++] = '.';
+ strbuf_addch(name, '.');
for (;;) {
int c = get_next_char();
if (c == '\n')
goto error_incomplete_line;
}
- name[baselen++] = c;
- if (baselen > MAXNAME / 2)
- return -1;
+ strbuf_addch(name, c);
}
/* Final ']' */
if (get_next_char() != ']')
return -1;
- return baselen;
+ return 0;
error_incomplete_line:
cf->linenr--;
return -1;
}
-static int get_base_var(char *name)
+static int get_base_var(struct strbuf *name)
{
- int baselen = 0;
-
for (;;) {
int c = get_next_char();
if (cf->eof)
return -1;
if (c == ']')
- return baselen;
+ return 0;
if (isspace(c))
- return get_extended_base_var(name, baselen, c);
+ return get_extended_base_var(name, c);
if (!iskeychar(c) && c != '.')
return -1;
- if (baselen > MAXNAME / 2)
- return -1;
- name[baselen++] = tolower(c);
+ strbuf_addch(name, tolower(c));
}
}
-static int git_parse_file(config_fn_t fn, void *data)
+static int git_parse_source(config_fn_t fn, void *data)
{
int comment = 0;
int baselen = 0;
- char *var = cf->var;
+ struct strbuf *var = &cf->var;
/* U+FEFF Byte Order Mark in UTF8 */
static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf";
continue;
}
if (c == '[') {
- baselen = get_base_var(var);
- if (baselen <= 0)
+ /* Reset prior to determining a new stem */
+ strbuf_reset(var);
+ if (get_base_var(var) < 0 || var->len < 1)
break;
- var[baselen++] = '.';
- var[baselen] = 0;
+ strbuf_addch(var, '.');
+ baselen = var->len;
continue;
}
if (!isalpha(c))
break;
- var[baselen] = tolower(c);
- if (get_value(fn, data, var, baselen+1) < 0)
+ /*
+ * Truncate the var name back to the section header
+ * stem prior to grabbing the suffix part of the name
+ * and the value.
+ */
+ strbuf_setlen(var, baselen);
+ strbuf_addch(var, tolower(c));
+ if (get_value(fn, data, var) < 0)
break;
}
- die("bad config file line %d in %s", cf->linenr, cf->name);
+ if (cf->die_on_error)
+ die("bad config file line %d in %s", cf->linenr, cf->name);
+ else
+ return error("bad config file line %d in %s", cf->linenr, cf->name);
}
static int parse_unit_factor(const char *end, uintmax_t *val)
return 0;
}
-static int git_parse_long(const char *value, long *ret)
+static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
{
if (value && *value) {
char *end;
val = strtoimax(value, &end, 0);
if (errno == ERANGE)
return 0;
- if (!parse_unit_factor(end, &factor))
+ if (!parse_unit_factor(end, &factor)) {
+ errno = EINVAL;
return 0;
+ }
uval = abs(val);
uval *= factor;
- if ((uval > maximum_signed_value_of_type(long)) ||
- (abs(val) > uval))
+ if (uval > max || abs(val) > uval) {
+ errno = ERANGE;
return 0;
+ }
val *= factor;
*ret = val;
return 1;
}
+ errno = EINVAL;
return 0;
}
-int git_parse_ulong(const char *value, unsigned long *ret)
+static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
{
if (value && *value) {
char *end;
if (errno == ERANGE)
return 0;
oldval = val;
- if (!parse_unit_factor(end, &val))
+ if (!parse_unit_factor(end, &val)) {
+ errno = EINVAL;
return 0;
- if ((val > maximum_unsigned_value_of_type(long)) ||
- (oldval > val))
+ }
+ if (val > max || oldval > val) {
+ errno = ERANGE;
return 0;
+ }
*ret = val;
return 1;
}
+ errno = EINVAL;
return 0;
}
-static void die_bad_config(const char *name)
+static int git_parse_int(const char *value, int *ret)
+{
+ intmax_t tmp;
+ if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
+ return 0;
+ *ret = tmp;
+ return 1;
+}
+
+static int git_parse_int64(const char *value, int64_t *ret)
+{
+ intmax_t tmp;
+ if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t)))
+ return 0;
+ *ret = tmp;
+ return 1;
+}
+
+int git_parse_ulong(const char *value, unsigned long *ret)
+{
+ uintmax_t tmp;
+ if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long)))
+ return 0;
+ *ret = tmp;
+ return 1;
+}
+
+static void die_bad_number(const char *name, const char *value)
{
+ const char *reason = errno == ERANGE ?
+ "out of range" :
+ "invalid unit";
+ if (!value)
+ value = "";
+
if (cf && cf->name)
- die("bad config value for '%s' in %s", name, cf->name);
- die("bad config value for '%s'", name);
+ die("bad numeric config value '%s' for '%s' in %s: %s",
+ value, name, cf->name, reason);
+ die("bad numeric config value '%s' for '%s': %s", value, name, reason);
}
int git_config_int(const char *name, const char *value)
{
- long ret = 0;
- if (!git_parse_long(value, &ret))
- die_bad_config(name);
+ int ret;
+ if (!git_parse_int(value, &ret))
+ die_bad_number(name, value);
+ return ret;
+}
+
+int64_t git_config_int64(const char *name, const char *value)
+{
+ int64_t ret;
+ if (!git_parse_int64(value, &ret))
+ die_bad_number(name, value);
return ret;
}
{
unsigned long ret;
if (!git_parse_ulong(value, &ret))
- die_bad_config(name);
+ die_bad_number(name, value);
return ret;
}
int git_config_maybe_bool(const char *name, const char *value)
{
- long v = git_config_maybe_bool_text(name, value);
+ int v = git_config_maybe_bool_text(name, value);
if (0 <= v)
return v;
- if (git_parse_long(value, &v))
+ if (git_parse_int(value, &v))
return !!v;
return -1;
}
trust_ctime = git_config_bool(var, value);
return 0;
}
+ if (!strcmp(var, "core.statinfo") ||
+ !strcmp(var, "core.checkstat")) {
+ /*
+ * NEEDSWORK: statinfo was a typo in v1.8.2 that has
+ * never been advertised. we will remove it at Git
+ * 2.0 boundary.
+ */
+ if (!strcmp(var, "core.statinfo")) {
+ static int warned;
+ if (!warned++) {
+ warning("'core.statinfo' will be removed in Git 2.0; "
+ "use 'core.checkstat' instead.");
+ }
+ }
+ if (!strcasecmp(value, "default"))
+ check_stat = 1;
+ else if (!strcasecmp(value, "minimal"))
+ check_stat = 0;
+ }
if (!strcmp(var, "core.quotepath")) {
quote_path_fully = git_config_bool(var, value);
return 0;
}
- if (!strcmp(var, "core.logpackaccess"))
- return git_config_string(&log_pack_access, var, value);
-
if (!strcmp(var, "core.autocrlf")) {
if (value && !strcasecmp(value, "input")) {
if (core_eol == EOL_CRLF)
if (!strcmp(var, "core.editor"))
return git_config_string(&editor_program, var, value);
+ if (!strcmp(var, "core.commentchar")) {
+ const char *comment;
+ int ret = git_config_string(&comment, var, value);
+ if (!ret)
+ comment_line_char = comment[0];
+ return ret;
+ }
+
if (!strcmp(var, "core.askpass"))
return git_config_string(&askpass_program, var, value);
return 0;
}
- /* Add other config variables here and to Documentation/config.txt. */
- return 0;
-}
-
-static int git_default_user_config(const char *var, const char *value)
-{
- if (!strcmp(var, "user.name")) {
- if (!value)
- return config_error_nonbool(var);
- strlcpy(git_default_name, value, sizeof(git_default_name));
- user_ident_explicitly_given |= IDENT_NAME_GIVEN;
- return 0;
- }
-
- if (!strcmp(var, "user.email")) {
- if (!value)
- return config_error_nonbool(var);
- strlcpy(git_default_email, value, sizeof(git_default_email));
- user_ident_explicitly_given |= IDENT_MAIL_GIVEN;
+ if (!strcmp(var, "core.precomposeunicode")) {
+ precomposed_unicode = git_config_bool(var, value);
return 0;
}
push_default = PUSH_DEFAULT_NOTHING;
else if (!strcmp(value, "matching"))
push_default = PUSH_DEFAULT_MATCHING;
+ else if (!strcmp(value, "simple"))
+ push_default = PUSH_DEFAULT_SIMPLE;
else if (!strcmp(value, "upstream"))
push_default = PUSH_DEFAULT_UPSTREAM;
else if (!strcmp(value, "tracking")) /* deprecated */
push_default = PUSH_DEFAULT_CURRENT;
else {
error("Malformed value for %s: %s", var, value);
- return error("Must be one of nothing, matching, "
- "tracking or current.");
+ return error("Must be one of nothing, matching, simple, "
+ "upstream or current.");
}
return 0;
}
{
if (!strcmp(var, "mailmap.file"))
return git_config_string(&git_mailmap_file, var, value);
+ if (!strcmp(var, "mailmap.blob"))
+ return git_config_string(&git_mailmap_blob, var, value);
/* Add other config variables here and to Documentation/config.txt. */
return 0;
int git_default_config(const char *var, const char *value, void *dummy)
{
- if (!prefixcmp(var, "core."))
+ if (starts_with(var, "core."))
return git_default_core_config(var, value);
- if (!prefixcmp(var, "user."))
- return git_default_user_config(var, value);
+ if (starts_with(var, "user."))
+ return git_ident_config(var, value, dummy);
- if (!prefixcmp(var, "i18n."))
+ if (starts_with(var, "i18n."))
return git_default_i18n_config(var, value);
- if (!prefixcmp(var, "branch."))
+ if (starts_with(var, "branch."))
return git_default_branch_config(var, value);
- if (!prefixcmp(var, "push."))
+ if (starts_with(var, "push."))
return git_default_push_config(var, value);
- if (!prefixcmp(var, "mailmap."))
+ if (starts_with(var, "mailmap."))
return git_default_mailmap_config(var, value);
- if (!prefixcmp(var, "advice."))
+ if (starts_with(var, "advice."))
return git_default_advice_config(var, value);
if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
return 0;
}
+/*
+ * All source specific fields in the union, die_on_error, name and the callbacks
+ * fgetc, ungetc, ftell of top need to be initialized before calling
+ * this function.
+ */
+static int do_config_from(struct config_source *top, config_fn_t fn, void *data)
+{
+ int ret;
+
+ /* push config-file parsing state stack */
+ top->prev = cf;
+ top->linenr = 1;
+ top->eof = 0;
+ strbuf_init(&top->value, 1024);
+ strbuf_init(&top->var, 1024);
+ cf = top;
+
+ ret = git_parse_source(fn, data);
+
+ /* pop config-file parsing state stack */
+ strbuf_release(&top->value);
+ strbuf_release(&top->var);
+ cf = top->prev;
+
+ return ret;
+}
+
int git_config_from_file(config_fn_t fn, const char *filename, void *data)
{
int ret;
ret = -1;
if (f) {
- config_file top;
+ struct config_source top;
- /* push config-file parsing state stack */
- top.prev = cf;
- top.f = f;
+ top.u.file = f;
top.name = filename;
- top.linenr = 1;
- top.eof = 0;
- strbuf_init(&top.value, 1024);
- cf = ⊤
+ top.die_on_error = 1;
+ top.do_fgetc = config_file_fgetc;
+ top.do_ungetc = config_file_ungetc;
+ top.do_ftell = config_file_ftell;
- ret = git_parse_file(fn, data);
-
- /* pop config-file parsing state stack */
- strbuf_release(&top.value);
- cf = top.prev;
+ ret = do_config_from(&top, fn, data);
fclose(f);
}
return ret;
}
+int git_config_from_buf(config_fn_t fn, const char *name, const char *buf,
+ size_t len, void *data)
+{
+ struct config_source top;
+
+ top.u.buf.buf = buf;
+ top.u.buf.len = len;
+ top.u.buf.pos = 0;
+ top.name = name;
+ top.die_on_error = 0;
+ top.do_fgetc = config_buf_fgetc;
+ top.do_ungetc = config_buf_ungetc;
+ top.do_ftell = config_buf_ftell;
+
+ return do_config_from(&top, fn, data);
+}
+
+static int git_config_from_blob_sha1(config_fn_t fn,
+ const char *name,
+ const unsigned char *sha1,
+ void *data)
+{
+ enum object_type type;
+ char *buf;
+ unsigned long size;
+ int ret;
+
+ buf = read_sha1_file(sha1, &type, &size);
+ if (!buf)
+ return error("unable to load config blob object '%s'", name);
+ if (type != OBJ_BLOB) {
+ free(buf);
+ return error("reference '%s' does not point to a blob", name);
+ }
+
+ ret = git_config_from_buf(fn, name, buf, size, data);
+ free(buf);
+
+ return ret;
+}
+
+static int git_config_from_blob_ref(config_fn_t fn,
+ const char *name,
+ void *data)
+{
+ unsigned char sha1[20];
+
+ if (get_sha1(name, sha1) < 0)
+ return error("unable to resolve config blob '%s'", name);
+ return git_config_from_blob_sha1(fn, name, sha1, data);
+}
+
const char *git_etc_gitconfig(void)
{
static const char *system_wide;
int git_config_early(config_fn_t fn, void *data, const char *repo_config)
{
int ret = 0, found = 0;
- const char *home = NULL;
+ char *xdg_config = NULL;
+ char *user_config = NULL;
+
+ home_config_paths(&user_config, &xdg_config, "config");
- if (git_config_system() && !access(git_etc_gitconfig(), R_OK)) {
+ if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0)) {
ret += git_config_from_file(fn, git_etc_gitconfig(),
data);
found += 1;
}
- home = getenv("HOME");
- if (home) {
- char buf[PATH_MAX];
- char *user_config = mksnpath(buf, sizeof(buf), "%s/.gitconfig", home);
- if (!access(user_config, R_OK)) {
- ret += git_config_from_file(fn, user_config, data);
- found += 1;
- }
+ if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK)) {
+ ret += git_config_from_file(fn, xdg_config, data);
+ found += 1;
}
- if (repo_config && !access(repo_config, R_OK)) {
+ if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK)) {
+ ret += git_config_from_file(fn, user_config, data);
+ found += 1;
+ }
+
+ if (repo_config && !access_or_die(repo_config, R_OK, 0)) {
ret += git_config_from_file(fn, repo_config, data);
found += 1;
}
break;
}
+ free(xdg_config);
+ free(user_config);
return ret == 0 ? found : ret;
}
int git_config_with_options(config_fn_t fn, void *data,
- const char *filename, int respect_includes)
+ const char *filename,
+ const char *blob_ref,
+ int respect_includes)
{
char *repo_config = NULL;
int ret;
*/
if (filename)
return git_config_from_file(fn, filename, data);
+ else if (blob_ref)
+ return git_config_from_blob_ref(fn, blob_ref, data);
repo_config = git_pathdup("config");
ret = git_config_early(fn, data, repo_config);
int git_config(config_fn_t fn, void *data)
{
- return git_config_with_options(fn, data, NULL, 1);
+ return git_config_with_options(fn, data, NULL, NULL, 1);
}
/*
* Find all the stuff for git_config_set() below.
*/
-#define MAX_MATCHES 512
-
static struct {
int baselen;
char *key;
int do_not_match;
regex_t *value_regex;
int multi_replace;
- size_t offset[MAX_MATCHES];
+ size_t *offset;
+ unsigned int offset_alloc;
enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
int seen;
} store;
{
const char *ep;
size_t section_len;
- FILE *f = cf->f;
switch (store.state) {
case KEY_SEEN:
if (matches(key, value)) {
if (store.seen == 1 && store.multi_replace == 0) {
warning("%s has multiple values", key);
- } else if (store.seen >= MAX_MATCHES) {
- error("too many matches for %s", key);
- return 1;
}
- store.offset[store.seen] = ftell(f);
+ ALLOC_GROW(store.offset, store.seen + 1,
+ store.offset_alloc);
+
+ store.offset[store.seen] = cf->do_ftell(cf);
store.seen++;
}
break;
* Do not increment matches: this is no match, but we
* just made sure we are in the desired section.
*/
- store.offset[store.seen] = ftell(f);
+ ALLOC_GROW(store.offset, store.seen + 1,
+ store.offset_alloc);
+ store.offset[store.seen] = cf->do_ftell(cf);
/* fallthru */
case SECTION_END_SEEN:
case START:
if (matches(key, value)) {
- store.offset[store.seen] = ftell(f);
+ ALLOC_GROW(store.offset, store.seen + 1,
+ store.offset_alloc);
+ store.offset[store.seen] = cf->do_ftell(cf);
store.state = KEY_SEEN;
store.seen++;
} else {
if (strrchr(key, '.') - key == store.baselen &&
!strncmp(key, store.key, store.baselen)) {
store.state = SECTION_SEEN;
- store.offset[store.seen] = ftell(f);
+ ALLOC_GROW(store.offset,
+ store.seen + 1,
+ store.offset_alloc);
+ store.offset[store.seen] = cf->do_ftell(cf);
}
}
}
out_free_ret_1:
free(*store_key);
+ *store_key = NULL;
return -CONFIG_INVALID_KEY;
}
}
}
+ ALLOC_GROW(store.offset, 1, store.offset_alloc);
store.offset[0] = 0;
store.state = START;
store.seen = 0;
return 0;
}
+static int section_name_is_ok(const char *name)
+{
+ /* Empty section names are bogus. */
+ if (!*name)
+ return 0;
+
+ /*
+ * Before a dot, we must be alphanumeric or dash. After the first dot,
+ * anything goes, so we can stop checking.
+ */
+ for (; *name && *name != '.'; name++)
+ if (*name != '-' && !isalnum(*name))
+ return 0;
+ return 1;
+}
+
/* if new_name == NULL, the section is removed instead */
int git_config_rename_section_in_file(const char *config_filename,
const char *old_name, const char *new_name)
{
int ret = 0, remove = 0;
char *filename_buf = NULL;
- struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1);
+ struct lock_file *lock;
int out_fd;
char buf[1024];
FILE *config_file;
+ if (new_name && !section_name_is_ok(new_name)) {
+ ret = error("invalid section name: %s", new_name);
+ goto out;
+ }
+
if (!config_filename)
config_filename = filename_buf = git_pathdup("config");
+ lock = xcalloc(sizeof(struct lock_file), 1);
out_fd = hold_lock_file_for_update(lock, config_filename, 0);
if (out_fd < 0) {
ret = error("could not lock config file %s", config_filename);
* Call this to report error for your variable that should not
* get a boolean value (i.e. "[my] var" means "true").
*/
+#undef config_error_nonbool
int config_error_nonbool(const char *var)
{
return error("Missing value for '%s'", var);
}
+
+int parse_config_key(const char *var,
+ const char *section,
+ const char **subsection, int *subsection_len,
+ const char **key)
+{
+ int section_len = strlen(section);
+ const char *dot;
+
+ /* Does it start with "section." ? */
+ if (!starts_with(var, section) || var[section_len] != '.')
+ return -1;
+
+ /*
+ * Find the key; we don't know yet if we have a subsection, but we must
+ * parse backwards from the end, since the subsection may have dots in
+ * it, too.
+ */
+ dot = strrchr(var, '.');
+ *key = dot + 1;
+
+ /* Did we have a subsection at all? */
+ if (dot == var + section_len) {
+ *subsection = NULL;
+ *subsection_len = 0;
+ }
+ else {
+ *subsection = var + section_len + 1;
+ *subsection_len = dot - *subsection;
+ }
+
+ return 0;
+}
/*
- * I'm tired of doing "vsnprintf()" etc just to open a
- * file, so here's a "return static buffer with printf"
- * interface for paths.
- *
- * It's obviously not thread-safe. Sue me. But it's quite
- * useful for doing things like
- *
- * f = open(mkpath("%s/%s.git", base, name), O_RDONLY);
- *
- * which is what it's designed for.
+ * Utilities for paths and pathnames
*/
#include "cache.h"
#include "strbuf.h"
+#include "string-list.h"
+
+static int get_st_mode_bits(const char *path, int *mode)
+{
+ struct stat st;
+ if (lstat(path, &st) < 0)
+ return -1;
+ *mode = st.st_mode;
+ return 0;
+}
static char bad_path[] = "/bad-path/";
return cleanup_path(buf);
}
-static char *git_vsnpath(char *buf, size_t n, const char *fmt, va_list args)
+static char *vsnpath(char *buf, size_t n, const char *fmt, va_list args)
{
const char *git_dir = get_git_dir();
size_t len;
char *git_snpath(char *buf, size_t n, const char *fmt, ...)
{
+ char *ret;
va_list args;
va_start(args, fmt);
- (void)git_vsnpath(buf, n, fmt, args);
+ ret = vsnpath(buf, n, fmt, args);
va_end(args);
- return buf;
+ return ret;
}
char *git_pathdup(const char *fmt, ...)
{
- char path[PATH_MAX];
+ char path[PATH_MAX], *ret;
+ va_list args;
+ va_start(args, fmt);
+ ret = vsnpath(path, sizeof(path), fmt, args);
+ va_end(args);
+ return xstrdup(ret);
+}
+
+char *mkpathdup(const char *fmt, ...)
+{
+ char *path;
+ struct strbuf sb = STRBUF_INIT;
va_list args;
+
va_start(args, fmt);
- (void)git_vsnpath(path, sizeof(path), fmt, args);
+ strbuf_vaddf(&sb, fmt, args);
va_end(args);
- return xstrdup(path);
+ path = xstrdup(cleanup_path(sb.buf));
+
+ strbuf_release(&sb);
+ return path;
}
char *mkpath(const char *fmt, ...)
char *git_path(const char *fmt, ...)
{
- const char *git_dir = get_git_dir();
char *pathname = get_pathname();
va_list args;
- unsigned len;
+ char *ret;
- len = strlen(git_dir);
- if (len > PATH_MAX-100)
- return bad_path;
- memcpy(pathname, git_dir, len);
- if (len && git_dir[len-1] != '/')
- pathname[len++] = '/';
va_start(args, fmt);
- len += vsnprintf(pathname + len, PATH_MAX - len, fmt, args);
+ ret = vsnpath(pathname, PATH_MAX, fmt, args);
va_end(args);
- if (len >= PATH_MAX)
- return bad_path;
- return cleanup_path(pathname);
+ return ret;
+}
+
+void home_config_paths(char **global, char **xdg, char *file)
+{
+ char *xdg_home = getenv("XDG_CONFIG_HOME");
+ char *home = getenv("HOME");
+ char *to_free = NULL;
+
+ if (!home) {
+ if (global)
+ *global = NULL;
+ } else {
+ if (!xdg_home) {
+ to_free = mkpathdup("%s/.config", home);
+ xdg_home = to_free;
+ }
+ if (global)
+ *global = mkpathdup("%s/.gitconfig", home);
+ }
+
+ if (!xdg_home)
+ *xdg = NULL;
+ else
+ *xdg = mkpathdup("%s/git/%s", xdg_home, file);
+
+ free(to_free);
}
char *git_path_submodule(const char *path, const char *fmt, ...)
char *expand_user_path(const char *path)
{
struct strbuf user_path = STRBUF_INIT;
- const char *first_slash = strchrnul(path, '/');
const char *to_copy = path;
if (path == NULL)
goto return_null;
if (path[0] == '~') {
+ const char *first_slash = strchrnul(path, '/');
const char *username = path + 1;
size_t username_len = first_slash - username;
if (username_len == 0) {
return NULL;
}
-int set_shared_perm(const char *path, int mode)
+static int calc_shared_perm(int mode)
{
- struct stat st;
- int tweak, shared, orig_mode;
+ int tweak;
- if (!shared_repository) {
- if (mode)
- return chmod(path, mode & ~S_IFMT);
- return 0;
- }
- if (!mode) {
- if (lstat(path, &st) < 0)
- return -1;
- mode = st.st_mode;
- orig_mode = mode;
- } else
- orig_mode = 0;
if (shared_repository < 0)
- shared = -shared_repository;
+ tweak = -shared_repository;
else
- shared = shared_repository;
- tweak = shared;
+ tweak = shared_repository;
if (!(mode & S_IWUSR))
tweak &= ~0222;
else
mode |= tweak;
- if (S_ISDIR(mode)) {
+ return mode;
+}
+
+
+int adjust_shared_perm(const char *path)
+{
+ int old_mode, new_mode;
+
+ if (!shared_repository)
+ return 0;
+ if (get_st_mode_bits(path, &old_mode) < 0)
+ return -1;
+
+ new_mode = calc_shared_perm(old_mode);
+ if (S_ISDIR(old_mode)) {
/* Copy read bits to execute bits */
- mode |= (shared & 0444) >> 2;
- mode |= FORCE_DIR_SET_GID;
+ new_mode |= (new_mode & 0444) >> 2;
+ new_mode |= FORCE_DIR_SET_GID;
}
- if (((shared_repository < 0
- ? (orig_mode & (FORCE_DIR_SET_GID | 0777))
- : (orig_mode & mode)) != mode) &&
- chmod(path, (mode & ~S_IFMT)) < 0)
+ if (((old_mode ^ new_mode) & ~S_IFMT) &&
+ chmod(path, (new_mode & ~S_IFMT)) < 0)
return -2;
return 0;
}
-const char *relative_path(const char *abs, const char *base)
+static int have_same_root(const char *path1, const char *path2)
+{
+ int is_abs1, is_abs2;
+
+ is_abs1 = is_absolute_path(path1);
+ is_abs2 = is_absolute_path(path2);
+ return (is_abs1 && is_abs2 && tolower(path1[0]) == tolower(path2[0])) ||
+ (!is_abs1 && !is_abs2);
+}
+
+/*
+ * 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:" */
+ if (has_dos_drive_prefix(in)) {
+ i = 2;
+ j = 2;
+ }
+ } 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;
+}
+
+/*
+ * 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 (!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]))
+ 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(abs[j]))
+ while (is_dir_sep(in[j]))
j++;
continue;
- } else if (abs[j] != base[i]) {
- return abs;
+ } else if (in[j] != prefix[i]) {
+ return in;
}
i++;
j++;
}
if (
/* "/foo" is a prefix of "/foo" */
- abs[j] &&
+ in[j] &&
/* "/foo" is not a prefix of "/foobar" */
- !is_dir_sep(base[i-1]) && !is_dir_sep(abs[j])
+ !is_dir_sep(prefix[i-1]) && !is_dir_sep(in[j])
)
- return abs;
- while (is_dir_sep(abs[j]))
+ return in;
+ while (is_dir_sep(in[j]))
j++;
- if (!abs[j])
+ if (!in[j])
strcpy(buf, ".");
else
- strcpy(buf, abs + j);
+ strcpy(buf, in + j);
return buf;
}
*
* 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.
*/
-int normalize_path_copy(char *dst, const char *src)
+int normalize_path_copy_len(char *dst, const char *src, int *prefix_len)
{
char *dst0;
/* 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;
}
+int normalize_path_copy(char *dst, const char *src)
+{
+ return normalize_path_copy_len(dst, src, NULL);
+}
+
/*
* path = Canonical absolute path
- * prefix_list = Colon-separated list of absolute paths
+ * prefixes = string_list containing normalized, absolute paths without
+ * trailing slashes (except for the root directory, which is denoted by "/").
*
- * Determines, for each path in prefix_list, whether the "prefix" really
+ * Determines, for each path in prefixes, whether the "prefix"
* is an ancestor directory of path. Returns the length of the longest
* ancestor directory, excluding any trailing slashes, or -1 if no prefix
- * is an ancestor. (Note that this means 0 is returned if prefix_list is
- * "/".) "/foo" is not considered an ancestor of "/foobar". Directories
+ * is an ancestor. (Note that this means 0 is returned if prefixes is
+ * ["/"].) "/foo" is not considered an ancestor of "/foobar". Directories
* are not considered to be their own ancestors. path must be in a
* canonical form: empty components, or "." or ".." components are not
- * allowed. prefix_list may be null, which is like "".
+ * allowed.
*/
-int longest_ancestor_length(const char *path, const char *prefix_list)
+int longest_ancestor_length(const char *path, struct string_list *prefixes)
{
- char buf[PATH_MAX+1];
- const char *ceil, *colon;
- int len, max_len = -1;
+ int i, max_len = -1;
- if (prefix_list == NULL || !strcmp(path, "/"))
+ if (!strcmp(path, "/"))
return -1;
- for (colon = ceil = prefix_list; *colon; ceil = colon+1) {
- for (colon = ceil; *colon && *colon != PATH_SEP; colon++);
- len = colon - ceil;
- if (len == 0 || len > PATH_MAX || !is_absolute_path(ceil))
- continue;
- strlcpy(buf, ceil, len+1);
- if (normalize_path_copy(buf, buf) < 0)
- continue;
- len = strlen(buf);
- if (len > 0 && buf[len-1] == '/')
- buf[--len] = '\0';
+ for (i = 0; i < prefixes->nr; i++) {
+ const char *ceil = prefixes->items[i].string;
+ int len = strlen(ceil);
+
+ if (len == 1 && ceil[0] == '/')
+ len = 0; /* root matches anything, with length 0 */
+ else if (!strncmp(path, ceil, len) && path[len] == '/')
+ ; /* match of length len */
+ else
+ continue; /* no match */
- if (!strncmp(path, buf, len) &&
- path[len] == '/' &&
- len > max_len) {
+ if (len > max_len)
max_len = len;
- }
}
return max_len;