| /* |
| * Handle git attributes. See gitattributes(5) for a description of |
| * the file syntax, and Documentation/technical/api-gitattributes.txt |
| * for a description of the API. |
| * |
| * One basic design decision here is that we are not going to support |
| * an insanely large number of attributes. |
| */ |
| |
| #define NO_THE_INDEX_COMPATIBILITY_MACROS |
| #include "cache.h" |
| #include "exec_cmd.h" |
| #include "attr.h" |
| #include "dir.h" |
| |
| const char git_attr__true[] = "(builtin)true"; |
| const char git_attr__false[] = "\0(builtin)false"; |
| static const char git_attr__unknown[] = "(builtin)unknown"; |
| #define ATTR__TRUE git_attr__true |
| #define ATTR__FALSE git_attr__false |
| #define ATTR__UNSET NULL |
| #define ATTR__UNKNOWN git_attr__unknown |
| |
| /* This is a randomly chosen prime. */ |
| #define HASHSIZE 257 |
| |
| #ifndef DEBUG_ATTR |
| #define DEBUG_ATTR 0 |
| #endif |
| |
| struct git_attr { |
| struct git_attr *next; |
| unsigned h; |
| int attr_nr; |
| char name[FLEX_ARRAY]; |
| }; |
| static int attr_nr; |
| |
| static struct git_attr_check *check_all_attr; |
| static struct git_attr *(git_attr_hash[HASHSIZE]); |
| |
| char *git_attr_name(struct git_attr *attr) |
| { |
| return attr->name; |
| } |
| |
| static unsigned hash_name(const char *name, int namelen) |
| { |
| unsigned val = 0, c; |
| |
| while (namelen--) { |
| c = *name++; |
| val = ((val << 7) | (val >> 22)) ^ c; |
| } |
| return val; |
| } |
| |
| static int invalid_attr_name(const char *name, int namelen) |
| { |
| /* |
| * Attribute name cannot begin with '-' and must consist of |
| * characters from [-A-Za-z0-9_.]. |
| */ |
| if (namelen <= 0 || *name == '-') |
| return -1; |
| while (namelen--) { |
| char ch = *name++; |
| if (! (ch == '-' || ch == '.' || ch == '_' || |
| ('0' <= ch && ch <= '9') || |
| ('a' <= ch && ch <= 'z') || |
| ('A' <= ch && ch <= 'Z')) ) |
| return -1; |
| } |
| return 0; |
| } |
| |
| static struct git_attr *git_attr_internal(const char *name, int len) |
| { |
| unsigned hval = hash_name(name, len); |
| unsigned pos = hval % HASHSIZE; |
| struct git_attr *a; |
| |
| for (a = git_attr_hash[pos]; a; a = a->next) { |
| if (a->h == hval && |
| !memcmp(a->name, name, len) && !a->name[len]) |
| return a; |
| } |
| |
| if (invalid_attr_name(name, len)) |
| return NULL; |
| |
| a = xmalloc(sizeof(*a) + len + 1); |
| memcpy(a->name, name, len); |
| a->name[len] = 0; |
| a->h = hval; |
| a->next = git_attr_hash[pos]; |
| a->attr_nr = attr_nr++; |
| git_attr_hash[pos] = a; |
| |
| check_all_attr = xrealloc(check_all_attr, |
| sizeof(*check_all_attr) * attr_nr); |
| check_all_attr[a->attr_nr].attr = a; |
| check_all_attr[a->attr_nr].value = ATTR__UNKNOWN; |
| return a; |
| } |
| |
| struct git_attr *git_attr(const char *name) |
| { |
| return git_attr_internal(name, strlen(name)); |
| } |
| |
| /* What does a matched pattern decide? */ |
| struct attr_state { |
| struct git_attr *attr; |
| const char *setto; |
| }; |
| |
| /* |
| * One rule, as from a .gitattributes file. |
| * |
| * If is_macro is true, then u.attr is a pointer to the git_attr being |
| * defined. |
| * |
| * If is_macro is false, then u.pattern points at the filename pattern |
| * to which the rule applies. (The memory pointed to is part of the |
| * memory block allocated for the match_attr instance.) |
| * |
| * In either case, num_attr is the number of attributes affected by |
| * this rule, and state is an array listing them. The attributes are |
| * listed as they appear in the file (macros unexpanded). |
| */ |
| struct match_attr { |
| union { |
| char *pattern; |
| struct git_attr *attr; |
| } u; |
| char is_macro; |
| unsigned num_attr; |
| struct attr_state state[FLEX_ARRAY]; |
| }; |
| |
| static const char blank[] = " \t\r\n"; |
| |
| /* |
| * Parse a whitespace-delimited attribute state (i.e., "attr", |
| * "-attr", "!attr", or "attr=value") from the string starting at src. |
| * If e is not NULL, write the results to *e. Return a pointer to the |
| * remainder of the string (with leading whitespace removed), or NULL |
| * if there was an error. |
| */ |
| static const char *parse_attr(const char *src, int lineno, const char *cp, |
| struct attr_state *e) |
| { |
| const char *ep, *equals; |
| int len; |
| |
| ep = cp + strcspn(cp, blank); |
| equals = strchr(cp, '='); |
| if (equals && ep < equals) |
| equals = NULL; |
| if (equals) |
| len = equals - cp; |
| else |
| len = ep - cp; |
| if (!e) { |
| if (*cp == '-' || *cp == '!') { |
| cp++; |
| len--; |
| } |
| if (invalid_attr_name(cp, len)) { |
| fprintf(stderr, |
| "%.*s is not a valid attribute name: %s:%d\n", |
| len, cp, src, lineno); |
| return NULL; |
| } |
| } else { |
| if (*cp == '-' || *cp == '!') { |
| e->setto = (*cp == '-') ? ATTR__FALSE : ATTR__UNSET; |
| cp++; |
| len--; |
| } |
| else if (!equals) |
| e->setto = ATTR__TRUE; |
| else { |
| e->setto = xmemdupz(equals + 1, ep - equals - 1); |
| } |
| e->attr = git_attr_internal(cp, len); |
| } |
| return ep + strspn(ep, blank); |
| } |
| |
| static struct match_attr *parse_attr_line(const char *line, const char *src, |
| int lineno, int macro_ok) |
| { |
| int namelen; |
| int num_attr, i; |
| const char *cp, *name, *states; |
| struct match_attr *res = NULL; |
| int is_macro; |
| |
| cp = line + strspn(line, blank); |
| if (!*cp || *cp == '#') |
| return NULL; |
| name = cp; |
| namelen = strcspn(name, blank); |
| if (strlen(ATTRIBUTE_MACRO_PREFIX) < namelen && |
| !prefixcmp(name, ATTRIBUTE_MACRO_PREFIX)) { |
| if (!macro_ok) { |
| fprintf(stderr, "%s not allowed: %s:%d\n", |
| name, src, lineno); |
| return NULL; |
| } |
| is_macro = 1; |
| name += strlen(ATTRIBUTE_MACRO_PREFIX); |
| name += strspn(name, blank); |
| namelen = strcspn(name, blank); |
| if (invalid_attr_name(name, namelen)) { |
| fprintf(stderr, |
| "%.*s is not a valid attribute name: %s:%d\n", |
| namelen, name, src, lineno); |
| return NULL; |
| } |
| } |
| else |
| is_macro = 0; |
| |
| states = name + namelen; |
| states += strspn(states, blank); |
| |
| /* First pass to count the attr_states */ |
| for (cp = states, num_attr = 0; *cp; num_attr++) { |
| cp = parse_attr(src, lineno, cp, NULL); |
| if (!cp) |
| return NULL; |
| } |
| |
| res = xcalloc(1, |
| sizeof(*res) + |
| sizeof(struct attr_state) * num_attr + |
| (is_macro ? 0 : namelen + 1)); |
| if (is_macro) |
| res->u.attr = git_attr_internal(name, namelen); |
| else { |
| res->u.pattern = (char *)&(res->state[num_attr]); |
| memcpy(res->u.pattern, name, namelen); |
| res->u.pattern[namelen] = 0; |
| } |
| res->is_macro = is_macro; |
| res->num_attr = num_attr; |
| |
| /* Second pass to fill the attr_states */ |
| for (cp = states, i = 0; *cp; i++) { |
| cp = parse_attr(src, lineno, cp, &(res->state[i])); |
| } |
| |
| return res; |
| } |
| |
| /* |
| * Like info/exclude and .gitignore, the attribute information can |
| * come from many places. |
| * |
| * (1) .gitattribute file of the same directory; |
| * (2) .gitattribute file of the parent directory if (1) does not have |
| * any match; this goes recursively upwards, just like .gitignore. |
| * (3) $GIT_DIR/info/attributes, which overrides both of the above. |
| * |
| * In the same file, later entries override the earlier match, so in the |
| * global list, we would have entries from info/attributes the earliest |
| * (reading the file from top to bottom), .gitattribute of the root |
| * directory (again, reading the file from top to bottom) down to the |
| * current directory, and then scan the list backwards to find the first match. |
| * This is exactly the same as what excluded() does in dir.c to deal with |
| * .gitignore |
| */ |
| |
| static struct attr_stack { |
| struct attr_stack *prev; |
| char *origin; |
| unsigned num_matches; |
| unsigned alloc; |
| struct match_attr **attrs; |
| } *attr_stack; |
| |
| static void free_attr_elem(struct attr_stack *e) |
| { |
| int i; |
| free(e->origin); |
| for (i = 0; i < e->num_matches; i++) { |
| struct match_attr *a = e->attrs[i]; |
| int j; |
| for (j = 0; j < a->num_attr; j++) { |
| const char *setto = a->state[j].setto; |
| if (setto == ATTR__TRUE || |
| setto == ATTR__FALSE || |
| setto == ATTR__UNSET || |
| setto == ATTR__UNKNOWN) |
| ; |
| else |
| free((char *) setto); |
| } |
| free(a); |
| } |
| free(e->attrs); |
| free(e); |
| } |
| |
| static const char *builtin_attr[] = { |
| "[attr]binary -diff -text", |
| NULL, |
| }; |
| |
| static void handle_attr_line(struct attr_stack *res, |
| const char *line, |
| const char *src, |
| int lineno, |
| int macro_ok) |
| { |
| struct match_attr *a; |
| |
| a = parse_attr_line(line, src, lineno, macro_ok); |
| if (!a) |
| return; |
| if (res->alloc <= res->num_matches) { |
| res->alloc = alloc_nr(res->num_matches); |
| res->attrs = xrealloc(res->attrs, |
| sizeof(struct match_attr *) * |
| res->alloc); |
| } |
| res->attrs[res->num_matches++] = a; |
| } |
| |
| static struct attr_stack *read_attr_from_array(const char **list) |
| { |
| struct attr_stack *res; |
| const char *line; |
| int lineno = 0; |
| |
| res = xcalloc(1, sizeof(*res)); |
| while ((line = *(list++)) != NULL) |
| handle_attr_line(res, line, "[builtin]", ++lineno, 1); |
| return res; |
| } |
| |
| static enum git_attr_direction direction; |
| static struct index_state *use_index; |
| |
| static struct attr_stack *read_attr_from_file(const char *path, int macro_ok) |
| { |
| FILE *fp = fopen(path, "r"); |
| struct attr_stack *res; |
| char buf[2048]; |
| int lineno = 0; |
| |
| if (!fp) |
| return NULL; |
| res = xcalloc(1, sizeof(*res)); |
| while (fgets(buf, sizeof(buf), fp)) |
| handle_attr_line(res, buf, path, ++lineno, macro_ok); |
| fclose(fp); |
| return res; |
| } |
| |
| static void *read_index_data(const char *path) |
| { |
| int pos, len; |
| unsigned long sz; |
| enum object_type type; |
| void *data; |
| struct index_state *istate = use_index ? use_index : &the_index; |
| |
| len = strlen(path); |
| pos = index_name_pos(istate, path, len); |
| if (pos < 0) { |
| /* |
| * We might be in the middle of a merge, in which |
| * case we would read stage #2 (ours). |
| */ |
| int i; |
| for (i = -pos - 1; |
| (pos < 0 && i < istate->cache_nr && |
| !strcmp(istate->cache[i]->name, path)); |
| i++) |
| if (ce_stage(istate->cache[i]) == 2) |
| pos = i; |
| } |
| if (pos < 0) |
| return NULL; |
| data = read_sha1_file(istate->cache[pos]->sha1, &type, &sz); |
| if (!data || type != OBJ_BLOB) { |
| free(data); |
| return NULL; |
| } |
| return data; |
| } |
| |
| static struct attr_stack *read_attr_from_index(const char *path, int macro_ok) |
| { |
| struct attr_stack *res; |
| char *buf, *sp; |
| int lineno = 0; |
| |
| buf = read_index_data(path); |
| if (!buf) |
| return NULL; |
| |
| res = xcalloc(1, sizeof(*res)); |
| for (sp = buf; *sp; ) { |
| char *ep; |
| int more; |
| for (ep = sp; *ep && *ep != '\n'; ep++) |
| ; |
| more = (*ep == '\n'); |
| *ep = '\0'; |
| handle_attr_line(res, sp, path, ++lineno, macro_ok); |
| sp = ep + more; |
| } |
| free(buf); |
| return res; |
| } |
| |
| static struct attr_stack *read_attr(const char *path, int macro_ok) |
| { |
| struct attr_stack *res; |
| |
| if (direction == GIT_ATTR_CHECKOUT) { |
| res = read_attr_from_index(path, macro_ok); |
| if (!res) |
| res = read_attr_from_file(path, macro_ok); |
| } |
| else if (direction == GIT_ATTR_CHECKIN) { |
| res = read_attr_from_file(path, macro_ok); |
| if (!res) |
| /* |
| * There is no checked out .gitattributes file there, but |
| * we might have it in the index. We allow operation in a |
| * sparsely checked out work tree, so read from it. |
| */ |
| res = read_attr_from_index(path, macro_ok); |
| } |
| else |
| res = read_attr_from_index(path, macro_ok); |
| if (!res) |
| res = xcalloc(1, sizeof(*res)); |
| return res; |
| } |
| |
| #if DEBUG_ATTR |
| static void debug_info(const char *what, struct attr_stack *elem) |
| { |
| fprintf(stderr, "%s: %s\n", what, elem->origin ? elem->origin : "()"); |
| } |
| static void debug_set(const char *what, const char *match, struct git_attr *attr, const void *v) |
| { |
| const char *value = v; |
| |
| if (ATTR_TRUE(value)) |
| value = "set"; |
| else if (ATTR_FALSE(value)) |
| value = "unset"; |
| else if (ATTR_UNSET(value)) |
| value = "unspecified"; |
| |
| fprintf(stderr, "%s: %s => %s (%s)\n", |
| what, attr->name, (char *) value, match); |
| } |
| #define debug_push(a) debug_info("push", (a)) |
| #define debug_pop(a) debug_info("pop", (a)) |
| #else |
| #define debug_push(a) do { ; } while (0) |
| #define debug_pop(a) do { ; } while (0) |
| #define debug_set(a,b,c,d) do { ; } while (0) |
| #endif |
| |
| static void drop_attr_stack(void) |
| { |
| while (attr_stack) { |
| struct attr_stack *elem = attr_stack; |
| attr_stack = elem->prev; |
| free_attr_elem(elem); |
| } |
| } |
| |
| static const char *git_etc_gitattributes(void) |
| { |
| static const char *system_wide; |
| if (!system_wide) |
| system_wide = system_path(ETC_GITATTRIBUTES); |
| return system_wide; |
| } |
| |
| static int git_attr_system(void) |
| { |
| return !git_env_bool("GIT_ATTR_NOSYSTEM", 0); |
| } |
| |
| static void bootstrap_attr_stack(void) |
| { |
| struct attr_stack *elem; |
| |
| if (attr_stack) |
| return; |
| |
| elem = read_attr_from_array(builtin_attr); |
| elem->origin = NULL; |
| elem->prev = attr_stack; |
| attr_stack = elem; |
| |
| if (git_attr_system()) { |
| elem = read_attr_from_file(git_etc_gitattributes(), 1); |
| if (elem) { |
| elem->origin = NULL; |
| elem->prev = attr_stack; |
| attr_stack = elem; |
| } |
| } |
| |
| if (git_attributes_file) { |
| elem = read_attr_from_file(git_attributes_file, 1); |
| if (elem) { |
| elem->origin = NULL; |
| elem->prev = attr_stack; |
| attr_stack = elem; |
| } |
| } |
| |
| if (!is_bare_repository() || direction == GIT_ATTR_INDEX) { |
| elem = read_attr(GITATTRIBUTES_FILE, 1); |
| elem->origin = xstrdup(""); |
| elem->prev = attr_stack; |
| attr_stack = elem; |
| debug_push(elem); |
| } |
| |
| elem = read_attr_from_file(git_path(INFOATTRIBUTES_FILE), 1); |
| if (!elem) |
| elem = xcalloc(1, sizeof(*elem)); |
| elem->origin = NULL; |
| elem->prev = attr_stack; |
| attr_stack = elem; |
| } |
| |
| static void prepare_attr_stack(const char *path) |
| { |
| struct attr_stack *elem, *info; |
| int dirlen, len; |
| const char *cp; |
| |
| cp = strrchr(path, '/'); |
| if (!cp) |
| dirlen = 0; |
| else |
| dirlen = cp - path; |
| |
| /* |
| * 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(); |
| |
| /* |
| * Pop the "info" one that is always at the top of the stack. |
| */ |
| info = attr_stack; |
| attr_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 (attr_stack->origin) { |
| int namelen = strlen(attr_stack->origin); |
| |
| elem = attr_stack; |
| if (namelen <= dirlen && |
| !strncmp(elem->origin, path, namelen) && |
| (!namelen || path[namelen] == '/')) |
| break; |
| |
| debug_pop(elem); |
| attr_stack = elem->prev; |
| free_attr_elem(elem); |
| } |
| |
| /* |
| * Read from parent directories and push them down |
| */ |
| if (!is_bare_repository() || direction == GIT_ATTR_INDEX) { |
| /* |
| * 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. |
| */ |
| struct strbuf pathbuf = STRBUF_INIT; |
| |
| assert(attr_stack->origin); |
| while (1) { |
| len = strlen(attr_stack->origin); |
| if (dirlen <= len) |
| break; |
| cp = memchr(path + len + 1, '/', dirlen - len - 1); |
| if (!cp) |
| cp = path + dirlen; |
| strbuf_add(&pathbuf, path, cp - path); |
| strbuf_addch(&pathbuf, '/'); |
| strbuf_addstr(&pathbuf, GITATTRIBUTES_FILE); |
| elem = read_attr(pathbuf.buf, 0); |
| strbuf_setlen(&pathbuf, cp - path); |
| elem->origin = strbuf_detach(&pathbuf, NULL); |
| elem->prev = attr_stack; |
| attr_stack = elem; |
| debug_push(elem); |
| } |
| |
| strbuf_release(&pathbuf); |
| } |
| |
| /* |
| * Finally push the "info" one at the top of the stack. |
| */ |
| info->prev = attr_stack; |
| attr_stack = info; |
| } |
| |
| static int path_matches(const char *pathname, int pathlen, |
| const char *pattern, |
| const char *base, int baselen) |
| { |
| if (!strchr(pattern, '/')) { |
| /* match basename */ |
| const char *basename = strrchr(pathname, '/'); |
| basename = basename ? basename + 1 : pathname; |
| return (fnmatch_icase(pattern, basename, 0) == 0); |
| } |
| /* |
| * match with FNM_PATHNAME; the pattern has base implicitly |
| * in front of it. |
| */ |
| if (*pattern == '/') |
| pattern++; |
| if (pathlen < baselen || |
| (baselen && pathname[baselen] != '/') || |
| strncmp(pathname, base, baselen)) |
| return 0; |
| if (baselen != 0) |
| baselen++; |
| return fnmatch_icase(pattern, pathname + baselen, FNM_PATHNAME) == 0; |
| } |
| |
| static int macroexpand_one(int attr_nr, int rem); |
| |
| static int fill_one(const char *what, struct match_attr *a, int rem) |
| { |
| struct git_attr_check *check = check_all_attr; |
| int i; |
| |
| for (i = a->num_attr - 1; 0 < rem && 0 <= i; i--) { |
| struct git_attr *attr = a->state[i].attr; |
| const char **n = &(check[attr->attr_nr].value); |
| const char *v = a->state[i].setto; |
| |
| if (*n == ATTR__UNKNOWN) { |
| debug_set(what, |
| a->is_macro ? a->u.attr->name : a->u.pattern, |
| attr, v); |
| *n = v; |
| rem--; |
| rem = macroexpand_one(attr->attr_nr, rem); |
| } |
| } |
| return rem; |
| } |
| |
| static int fill(const char *path, int pathlen, struct attr_stack *stk, int rem) |
| { |
| int i; |
| const char *base = stk->origin ? stk->origin : ""; |
| |
| for (i = stk->num_matches - 1; 0 < rem && 0 <= i; i--) { |
| struct match_attr *a = stk->attrs[i]; |
| if (a->is_macro) |
| continue; |
| if (path_matches(path, pathlen, |
| a->u.pattern, base, strlen(base))) |
| rem = fill_one("fill", a, rem); |
| } |
| return rem; |
| } |
| |
| static int macroexpand_one(int attr_nr, int rem) |
| { |
| struct attr_stack *stk; |
| struct match_attr *a = NULL; |
| int i; |
| |
| if (check_all_attr[attr_nr].value != ATTR__TRUE) |
| return rem; |
| |
| for (stk = attr_stack; !a && stk; stk = stk->prev) |
| for (i = stk->num_matches - 1; !a && 0 <= i; i--) { |
| struct match_attr *ma = stk->attrs[i]; |
| if (!ma->is_macro) |
| continue; |
| if (ma->u.attr->attr_nr == attr_nr) |
| a = ma; |
| } |
| |
| if (a) |
| rem = fill_one("expand", a, rem); |
| |
| return rem; |
| } |
| |
| /* |
| * Collect all attributes for path into the array pointed to by |
| * check_all_attr. |
| */ |
| static void collect_all_attrs(const char *path) |
| { |
| struct attr_stack *stk; |
| int i, pathlen, rem; |
| |
| prepare_attr_stack(path); |
| for (i = 0; i < attr_nr; i++) |
| check_all_attr[i].value = ATTR__UNKNOWN; |
| |
| pathlen = strlen(path); |
| rem = attr_nr; |
| for (stk = attr_stack; 0 < rem && stk; stk = stk->prev) |
| rem = fill(path, pathlen, stk, rem); |
| } |
| |
| int git_check_attr(const char *path, int num, struct git_attr_check *check) |
| { |
| int i; |
| |
| collect_all_attrs(path); |
| |
| for (i = 0; i < num; i++) { |
| const char *value = check_all_attr[check[i].attr->attr_nr].value; |
| if (value == ATTR__UNKNOWN) |
| value = ATTR__UNSET; |
| check[i].value = value; |
| } |
| |
| return 0; |
| } |
| |
| int git_all_attrs(const char *path, int *num, struct git_attr_check **check) |
| { |
| int i, count, j; |
| |
| collect_all_attrs(path); |
| |
| /* Count the number of attributes that are set. */ |
| count = 0; |
| for (i = 0; i < attr_nr; i++) { |
| const char *value = check_all_attr[i].value; |
| if (value != ATTR__UNSET && value != ATTR__UNKNOWN) |
| ++count; |
| } |
| *num = count; |
| *check = xmalloc(sizeof(**check) * count); |
| j = 0; |
| for (i = 0; i < attr_nr; i++) { |
| const char *value = check_all_attr[i].value; |
| if (value != ATTR__UNSET && value != ATTR__UNKNOWN) { |
| (*check)[j].attr = check_all_attr[i].attr; |
| (*check)[j].value = value; |
| ++j; |
| } |
| } |
| |
| return 0; |
| } |
| |
| void git_attr_set_direction(enum git_attr_direction new, struct index_state *istate) |
| { |
| enum git_attr_direction old = direction; |
| |
| if (is_bare_repository() && new != GIT_ATTR_INDEX) |
| die("BUG: non-INDEX attr direction in a bare repo"); |
| |
| direction = new; |
| if (new != old) |
| drop_attr_stack(); |
| use_index = istate; |
| } |