Merge branch 'jc/apply-ws-fix-expands' into maint
[git/git.git] / builtin / apply.c
index e895340..c484b53 100644 (file)
@@ -7,6 +7,7 @@
  *
  */
 #include "cache.h"
+#include "lockfile.h"
 #include "cache-tree.h"
 #include "quote.h"
 #include "blob.h"
@@ -435,7 +436,7 @@ static unsigned long linelen(const char *buffer, unsigned long size)
 
 static int is_dev_null(const char *str)
 {
-       return !memcmp("/dev/null", str, 9) && isspace(str[9]);
+       return skip_prefix(str, "/dev/null", &str) && isspace(*str);
 }
 
 #define TERM_SPACE     1
@@ -656,11 +657,6 @@ static size_t diff_timestamp_len(const char *line, size_t len)
        return line + len - end;
 }
 
-static char *null_strdup(const char *s)
-{
-       return s ? xstrdup(s) : NULL;
-}
-
 static char *find_name_common(const char *line, const char *def,
                              int p_value, const char *end, int terminate)
 {
@@ -683,10 +679,10 @@ static char *find_name_common(const char *line, const char *def,
                        start = line;
        }
        if (!start)
-               return squash_slash(null_strdup(def));
+               return squash_slash(xstrdup_or_null(def));
        len = line - start;
        if (!len)
-               return squash_slash(null_strdup(def));
+               return squash_slash(xstrdup_or_null(def));
 
        /*
         * Generally we prefer the shorter name, especially
@@ -908,7 +904,7 @@ static void parse_traditional_patch(const char *first, const char *second, struc
                        patch->old_name = name;
                } else {
                        patch->old_name = name;
-                       patch->new_name = null_strdup(name);
+                       patch->new_name = xstrdup_or_null(name);
                }
        }
        if (!name)
@@ -997,7 +993,7 @@ static int gitdiff_delete(const char *line, struct patch *patch)
 {
        patch->is_delete = 1;
        free(patch->old_name);
-       patch->old_name = null_strdup(patch->def_name);
+       patch->old_name = xstrdup_or_null(patch->def_name);
        return gitdiff_oldmode(line, patch);
 }
 
@@ -1005,7 +1001,7 @@ static int gitdiff_newfile(const char *line, struct patch *patch)
 {
        patch->is_new = 1;
        free(patch->new_name);
-       patch->new_name = null_strdup(patch->def_name);
+       patch->new_name = xstrdup_or_null(patch->def_name);
        return gitdiff_newmode(line, patch);
 }
 
@@ -1075,7 +1071,7 @@ static int gitdiff_index(const char *line, struct patch *patch)
 
        line = ptr + 2;
        ptr = strchr(line, ' ');
-       eol = strchr(line, '\n');
+       eol = strchrnul(line, '\n');
 
        if (!ptr || eol < ptr)
                ptr = eol;
@@ -1281,9 +1277,7 @@ static int parse_git_header(const char *line, int len, unsigned int size, struct
         */
        patch->def_name = git_header_name(line, len);
        if (patch->def_name && root) {
-               char *s = xmalloc(root_len + strlen(patch->def_name) + 1);
-               strcpy(s, root);
-               strcpy(s + root_len, patch->def_name);
+               char *s = xstrfmt("%s%s", root, patch->def_name);
                free(patch->def_name);
                patch->def_name = s;
        }
@@ -1922,6 +1916,66 @@ static int parse_binary(char *buffer, unsigned long size, struct patch *patch)
        return used;
 }
 
+static void prefix_one(char **name)
+{
+       char *old_name = *name;
+       if (!old_name)
+               return;
+       *name = xstrdup(prefix_filename(prefix, prefix_length, *name));
+       free(old_name);
+}
+
+static void prefix_patch(struct patch *p)
+{
+       if (!prefix || p->is_toplevel_relative)
+               return;
+       prefix_one(&p->new_name);
+       prefix_one(&p->old_name);
+}
+
+/*
+ * include/exclude
+ */
+
+static struct string_list limit_by_name;
+static int has_include;
+static void add_name_limit(const char *name, int exclude)
+{
+       struct string_list_item *it;
+
+       it = string_list_append(&limit_by_name, name);
+       it->util = exclude ? NULL : (void *) 1;
+}
+
+static int use_patch(struct patch *p)
+{
+       const char *pathname = p->new_name ? p->new_name : p->old_name;
+       int i;
+
+       /* Paths outside are not touched regardless of "--include" */
+       if (0 < prefix_length) {
+               int pathlen = strlen(pathname);
+               if (pathlen <= prefix_length ||
+                   memcmp(prefix, pathname, prefix_length))
+                       return 0;
+       }
+
+       /* See if it matches any of exclude/include rule */
+       for (i = 0; i < limit_by_name.nr; i++) {
+               struct string_list_item *it = &limit_by_name.items[i];
+               if (!wildmatch(it->string, pathname, 0, NULL))
+                       return (it->util != NULL);
+       }
+
+       /*
+        * If we had any include, a path that does not match any rule is
+        * not used.  Otherwise, we saw bunch of exclude rules (or none)
+        * and such a path is used.
+        */
+       return !has_include;
+}
+
+
 /*
  * Read the patch text in "buffer" that extends for "size" bytes; stop
  * reading after seeing a single patch (i.e. changes to a single file).
@@ -1937,9 +1991,14 @@ static int parse_chunk(char *buffer, unsigned long size, struct patch *patch)
        if (offset < 0)
                return offset;
 
-       patch->ws_rule = whitespace_rule(patch->new_name
-                                        ? patch->new_name
-                                        : patch->old_name);
+       prefix_patch(patch);
+
+       if (!use_patch(patch))
+               patch->ws_rule = 0;
+       else
+               patch->ws_rule = whitespace_rule(patch->new_name
+                                                ? patch->new_name
+                                                : patch->old_name);
 
        patchsize = parse_single_patch(buffer + offset + hdrsize,
                                       size - offset - hdrsize, patch);
@@ -2588,7 +2647,7 @@ static void update_image(struct image *img,
                 * NOTE: this knows that we never call remove_first_line()
                 * on anything other than pre/post image.
                 */
-               img->line = xrealloc(img->line, nr * sizeof(*img->line));
+               REALLOC_ARRAY(img->line, nr);
                img->line_allocated = img->line;
        }
        if (preimage_limit != postimage->nr)
@@ -3109,13 +3168,15 @@ static void prepare_fn_table(struct patch *patch)
        }
 }
 
-static int checkout_target(struct cache_entry *ce, struct stat *st)
+static int checkout_target(struct index_state *istate,
+                          struct cache_entry *ce, struct stat *st)
 {
        struct checkout costate;
 
        memset(&costate, 0, sizeof(costate));
        costate.base_dir = "";
        costate.refresh_cache = 1;
+       costate.istate = istate;
        if (checkout_entry(ce, &costate, NULL) || lstat(ce->name, st))
                return error(_("cannot checkout %s"), ce->name);
        return 0;
@@ -3282,7 +3343,7 @@ static int load_current(struct image *image, struct patch *patch)
        if (lstat(name, &st)) {
                if (errno != ENOENT)
                        return error(_("%s: %s"), name, strerror(errno));
-               if (checkout_target(ce, &st))
+               if (checkout_target(&the_index, ce, &st))
                        return -1;
        }
        if (verify_index_match(ce, &st))
@@ -3436,7 +3497,7 @@ static int check_preimage(struct patch *patch, struct cache_entry **ce, struct s
                }
                *ce = active_cache[pos];
                if (stat_ret < 0) {
-                       if (checkout_target(*ce, st))
+                       if (checkout_target(&the_index, *ce, st))
                                return -1;
                }
                if (!cached && verify_index_match(*ce, st))
@@ -3669,7 +3730,7 @@ static void build_fake_ancestor(struct patch *list, const char *filename)
 {
        struct patch *patch;
        struct index_state result = { NULL };
-       int fd;
+       static struct lock_file lock;
 
        /* Once we start supporting the reverse patch, it may be
         * worth showing the new sha1 prefix, but until then...
@@ -3687,7 +3748,7 @@ static void build_fake_ancestor(struct patch *list, const char *filename)
                        if (!preimage_sha1_in_gitlink_patch(patch, sha1))
                                ; /* ok, the textual part looks sane */
                        else
-                               die("sha1 information is lacking or useless for submoule %s",
+                               die("sha1 information is lacking or useless for submodule %s",
                                    name);
                } else if (!get_sha1_blob(patch->old_sha1_prefix, sha1)) {
                        ; /* ok */
@@ -3707,8 +3768,8 @@ static void build_fake_ancestor(struct patch *list, const char *filename)
                        die ("Could not add %s to temporary index", name);
        }
 
-       fd = open(filename, O_WRONLY | O_CREAT, 0666);
-       if (fd < 0 || write_index(&result, fd) || close(fd))
+       hold_lock_file_for_update(&lock, filename, LOCK_DIE_ON_ERROR);
+       if (write_locked_index(&result, &lock, COMMIT_LOCK))
                die ("Could not write temporary index to %s", filename);
 
        discard_index(&result);
@@ -3870,9 +3931,10 @@ static void add_index_file(const char *path, unsigned mode, void *buf, unsigned
        ce->ce_flags = create_ce_flags(0);
        ce->ce_namelen = namelen;
        if (S_ISGITLINK(mode)) {
-               const char *s = buf;
+               const char *s;
 
-               if (get_sha1_hex(s + strlen("Subproject commit "), ce->sha1))
+               if (!skip_prefix(buf, "Subproject commit ", &s) ||
+                   get_sha1_hex(s, ce->sha1))
                        die(_("corrupt patch for submodule %s"), path);
        } else {
                if (!cached) {
@@ -4138,7 +4200,7 @@ static int write_out_results(struct patch *list)
        if (cpath.nr) {
                struct string_list_item *item;
 
-               sort_string_list(&cpath);
+               string_list_sort(&cpath);
                for_each_string_list_item(item, &cpath)
                        fprintf(stderr, "U %s\n", item->string);
                string_list_clear(&cpath, 0);
@@ -4151,64 +4213,6 @@ static int write_out_results(struct patch *list)
 
 static struct lock_file lock_file;
 
-static struct string_list limit_by_name;
-static int has_include;
-static void add_name_limit(const char *name, int exclude)
-{
-       struct string_list_item *it;
-
-       it = string_list_append(&limit_by_name, name);
-       it->util = exclude ? NULL : (void *) 1;
-}
-
-static int use_patch(struct patch *p)
-{
-       const char *pathname = p->new_name ? p->new_name : p->old_name;
-       int i;
-
-       /* Paths outside are not touched regardless of "--include" */
-       if (0 < prefix_length) {
-               int pathlen = strlen(pathname);
-               if (pathlen <= prefix_length ||
-                   memcmp(prefix, pathname, prefix_length))
-                       return 0;
-       }
-
-       /* See if it matches any of exclude/include rule */
-       for (i = 0; i < limit_by_name.nr; i++) {
-               struct string_list_item *it = &limit_by_name.items[i];
-               if (!wildmatch(it->string, pathname, 0, NULL))
-                       return (it->util != NULL);
-       }
-
-       /*
-        * If we had any include, a path that does not match any rule is
-        * not used.  Otherwise, we saw bunch of exclude rules (or none)
-        * and such a path is used.
-        */
-       return !has_include;
-}
-
-
-static void prefix_one(char **name)
-{
-       char *old_name = *name;
-       if (!old_name)
-               return;
-       *name = xstrdup(prefix_filename(prefix, prefix_length, *name));
-       free(old_name);
-}
-
-static void prefix_patches(struct patch *p)
-{
-       if (!prefix || p->is_toplevel_relative)
-               return;
-       for ( ; p; p = p->next) {
-               prefix_one(&p->new_name);
-               prefix_one(&p->old_name);
-       }
-}
-
 #define INACCURATE_EOF (1<<0)
 #define RECOUNT                (1<<1)
 
@@ -4234,8 +4238,6 @@ static int apply_patch(int fd, const char *filename, int options)
                        break;
                if (apply_in_reverse)
                        reverse_patches(patch);
-               if (prefix)
-                       prefix_patches(patch);
                if (use_patch(patch)) {
                        patch_stats(patch);
                        *listp = patch;
@@ -4293,13 +4295,11 @@ static int apply_patch(int fd, const char *filename, int options)
        return 0;
 }
 
-static int git_apply_config(const char *var, const char *value, void *cb)
+static void git_apply_config(void)
 {
-       if (!strcmp(var, "apply.whitespace"))
-               return git_config_string(&apply_default_whitespace, var, value);
-       else if (!strcmp(var, "apply.ignorewhitespace"))
-               return git_config_string(&apply_default_ignorewhitespace, var, value);
-       return git_default_config(var, value, cb);
+       git_config_get_string_const("apply.whitespace", &apply_default_whitespace);
+       git_config_get_string_const("apply.ignorewhitespace", &apply_default_ignorewhitespace);
+       git_config(git_default_config, NULL);
 }
 
 static int option_parse_exclude(const struct option *opt,
@@ -4447,7 +4447,7 @@ int cmd_apply(int argc, const char **argv, const char *prefix_)
 
        prefix = prefix_;
        prefix_length = prefix ? strlen(prefix) : 0;
-       git_config(git_apply_config, NULL);
+       git_apply_config();
        if (apply_default_whitespace)
                parse_whitespace_option(apply_default_whitespace);
        if (apply_default_ignorewhitespace)
@@ -4526,8 +4526,7 @@ int cmd_apply(int argc, const char **argv, const char *prefix_)
        }
 
        if (update_index) {
-               if (write_cache(newfd, active_cache, active_nr) ||
-                   commit_locked_index(&lock_file))
+               if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
                        die(_("Unable to write new index file"));
        }