Merge branch 'bw/pathspec-cleanup'
authorJunio C Hamano <gitster@pobox.com>
Wed, 18 Jan 2017 23:12:14 +0000 (15:12 -0800)
committerJunio C Hamano <gitster@pobox.com>
Wed, 18 Jan 2017 23:12:15 +0000 (15:12 -0800)
Code clean-up in the pathspec API.

* bw/pathspec-cleanup:
pathspec: rename prefix_pathspec to init_pathspec_item
pathspec: small readability changes
pathspec: create strip submodule slash helpers
pathspec: create parse_element_magic helper
pathspec: create parse_long_magic function
pathspec: create parse_short_magic function
pathspec: factor global magic into its own function
pathspec: simpler logic to prefix original pathspec elements
pathspec: always show mnemonic and name in unsupported_magic
pathspec: remove unused variable from unsupported_magic
pathspec: copy and free owned memory
pathspec: remove the deprecated get_pathspec function
ls-tree: convert show_recursive to use the pathspec struct interface
dir: convert fill_directory to use the pathspec struct interface
dir: remove struct path_simplify
mv: remove use of deprecated 'get_pathspec()'

Documentation/technical/api-setup.txt
builtin/ls-tree.c
builtin/mv.c
cache.h
dir.c
pathspec.c
pathspec.h
index 540e45568990f89fceb50ad619ca8402e9925983..eb1fa9853ef6fd3ba9ab29342cf55747efaa2a69 100644 (file)
@@ -27,8 +27,6 @@ parse_pathspec(). This function takes several arguments:
 
 - prefix and args come from cmd_* functions
 
-get_pathspec() is obsolete and should never be used in new code.
-
 parse_pathspec() helps catch unsupported features and reject them
 politely. At a lower level, different pathspec-related functions may
 not support the same set of features. Such pathspec-sensitive
index 0e30d862303b67ace2c7accf2e7c9346d8f63264..d7ebeb4ce6b1f1a0491f8db8a66001968a41b641 100644 (file)
@@ -31,21 +31,18 @@ static const  char * const ls_tree_usage[] = {
 
 static int show_recursive(const char *base, int baselen, const char *pathname)
 {
-       const char **s;
+       int i;
 
        if (ls_options & LS_RECURSIVE)
                return 1;
 
-       s = pathspec._raw;
-       if (!s)
+       if (!pathspec.nr)
                return 0;
 
-       for (;;) {
-               const char *spec = *s++;
+       for (i = 0; i < pathspec.nr; i++) {
+               const char *spec = pathspec.items[i].match;
                int len, speclen;
 
-               if (!spec)
-                       return 0;
                if (strncmp(base, spec, baselen))
                        continue;
                len = strlen(pathname);
@@ -59,6 +56,7 @@ static int show_recursive(const char *base, int baselen, const char *pathname)
                        continue;
                return 1;
        }
+       return 0;
 }
 
 static int show_tree(const unsigned char *sha1, struct strbuf *base,
@@ -175,8 +173,8 @@ int cmd_ls_tree(int argc, const char **argv, const char *prefix)
         * cannot be lifted until it is converted to use
         * match_pathspec() or tree_entry_interesting()
         */
-       parse_pathspec(&pathspec, PATHSPEC_GLOB | PATHSPEC_ICASE |
-                                 PATHSPEC_EXCLUDE,
+       parse_pathspec(&pathspec, PATHSPEC_ALL_MAGIC &
+                                 ~(PATHSPEC_FROMTOP | PATHSPEC_LITERAL),
                       PATHSPEC_PREFER_CWD,
                       prefix, argv + 1);
        for (i = 0; i < pathspec.nr; i++)
index 43adf92ba64426a2f312cd6133276a98b20855f1..61d20037add7cf56df721f8d69612b50412f94e9 100644 (file)
@@ -4,6 +4,7 @@
  * Copyright (C) 2006 Johannes Schindelin
  */
 #include "builtin.h"
+#include "pathspec.h"
 #include "lockfile.h"
 #include "dir.h"
 #include "cache-tree.h"
@@ -19,31 +20,42 @@ static const char * const builtin_mv_usage[] = {
 #define DUP_BASENAME 1
 #define KEEP_TRAILING_SLASH 2
 
-static const char **internal_copy_pathspec(const char *prefix,
-                                          const char **pathspec,
-                                          int count, unsigned flags)
+static const char **internal_prefix_pathspec(const char *prefix,
+                                            const char **pathspec,
+                                            int count, unsigned flags)
 {
        int i;
        const char **result;
+       int prefixlen = prefix ? strlen(prefix) : 0;
        ALLOC_ARRAY(result, count + 1);
-       COPY_ARRAY(result, pathspec, count);
-       result[count] = NULL;
+
+       /* Create an intermediate copy of the pathspec based on the flags */
        for (i = 0; i < count; i++) {
-               int length = strlen(result[i]);
+               int length = strlen(pathspec[i]);
                int to_copy = length;
+               char *it;
                while (!(flags & KEEP_TRAILING_SLASH) &&
-                      to_copy > 0 && is_dir_sep(result[i][to_copy - 1]))
+                      to_copy > 0 && is_dir_sep(pathspec[i][to_copy - 1]))
                        to_copy--;
-               if (to_copy != length || flags & DUP_BASENAME) {
-                       char *it = xmemdupz(result[i], to_copy);
-                       if (flags & DUP_BASENAME) {
-                               result[i] = xstrdup(basename(it));
-                               free(it);
-                       } else
-                               result[i] = it;
+
+               it = xmemdupz(pathspec[i], to_copy);
+               if (flags & DUP_BASENAME) {
+                       result[i] = xstrdup(basename(it));
+                       free(it);
+               } else {
+                       result[i] = it;
                }
        }
-       return get_pathspec(prefix, result);
+       result[count] = NULL;
+
+       /* Prefix the pathspec and free the old intermediate strings */
+       for (i = 0; i < count; i++) {
+               const char *match = prefix_path(prefix, prefixlen, result[i]);
+               free((char *) result[i]);
+               result[i] = match;
+       }
+
+       return result;
 }
 
 static const char *add_slash(const char *path)
@@ -130,7 +142,7 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
        if (read_cache() < 0)
                die(_("index file corrupt"));
 
-       source = internal_copy_pathspec(prefix, argv, argc, 0);
+       source = internal_prefix_pathspec(prefix, argv, argc, 0);
        modes = xcalloc(argc, sizeof(enum update_mode));
        /*
         * Keep trailing slash, needed to let
@@ -140,16 +152,16 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
        flags = KEEP_TRAILING_SLASH;
        if (argc == 1 && is_directory(argv[0]) && !is_directory(argv[1]))
                flags = 0;
-       dest_path = internal_copy_pathspec(prefix, argv + argc, 1, flags);
+       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_copy_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
+               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_copy_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
+               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]);
diff --git a/cache.h b/cache.h
index c74df701276e92aaae71dee36da96197b2dc3316..40f7ddd24710b8d16d34fd00c9a0841fc346ec5c 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -514,7 +514,6 @@ extern void set_git_work_tree(const char *tree);
 
 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
 
-extern const char **get_pathspec(const char *prefix, const char **pathspec);
 extern void setup_work_tree(void);
 extern const char *setup_git_directory_gently(int *);
 extern const char *setup_git_directory(void);
diff --git a/dir.c b/dir.c
index d872cc1570989bf22d8bd5d741d817372e76018f..4ac63bc940fa043fe82002dd6c282b0b5abcbad8 100644 (file)
--- a/dir.c
+++ b/dir.c
 #include "varint.h"
 #include "ewah/ewok.h"
 
-struct path_simplify {
-       int len;
-       const char *path;
-};
-
 /*
  * Tells read_directory_recursive how a file or directory should be treated.
  * Values are ordered by significance, e.g. if a directory contains both
@@ -50,7 +45,7 @@ struct cached_dir {
 
 static enum path_treatment read_directory_recursive(struct dir_struct *dir,
        const char *path, int len, struct untracked_cache_dir *untracked,
-       int check_only, const struct path_simplify *simplify);
+       int check_only, const struct pathspec *pathspec);
 static int get_dtype(struct dirent *de, const char *path, int len);
 
 int fspathcmp(const char *a, const char *b)
@@ -179,17 +174,21 @@ char *common_prefix(const struct pathspec *pathspec)
 
 int fill_directory(struct dir_struct *dir, const struct pathspec *pathspec)
 {
-       size_t len;
+       char *prefix;
+       size_t prefix_len;
 
        /*
         * Calculate common prefix for the pathspec, and
         * use that to optimize the directory walk
         */
-       len = common_prefix_len(pathspec);
+       prefix = common_prefix(pathspec);
+       prefix_len = prefix ? strlen(prefix) : 0;
 
        /* Read the directory and prune it */
-       read_directory(dir, pathspec->nr ? pathspec->_raw[0] : "", len, pathspec);
-       return len;
+       read_directory(dir, prefix, prefix_len, pathspec);
+
+       free(prefix);
+       return prefix_len;
 }
 
 int within_depth(const char *name, int namelen,
@@ -1312,7 +1311,7 @@ static enum exist_status directory_exists_in_index(const char *dirname, int len)
 static enum path_treatment treat_directory(struct dir_struct *dir,
        struct untracked_cache_dir *untracked,
        const char *dirname, int len, int baselen, int exclude,
-       const struct path_simplify *simplify)
+       const struct pathspec *pathspec)
 {
        /* The "len-1" is to strip the final '/' */
        switch (directory_exists_in_index(dirname, len-1)) {
@@ -1341,7 +1340,7 @@ static enum path_treatment treat_directory(struct dir_struct *dir,
        untracked = lookup_untracked(dir->untracked, untracked,
                                     dirname + baselen, len - baselen);
        return read_directory_recursive(dir, dirname, len,
-                                       untracked, 1, simplify);
+                                       untracked, 1, pathspec);
 }
 
 /*
@@ -1349,24 +1348,33 @@ static enum path_treatment treat_directory(struct dir_struct *dir,
  * reading - if the path cannot possibly be in the pathspec,
  * return true, and we'll skip it early.
  */
-static int simplify_away(const char *path, int pathlen, const struct path_simplify *simplify)
+static int simplify_away(const char *path, int pathlen,
+                        const struct pathspec *pathspec)
 {
-       if (simplify) {
-               for (;;) {
-                       const char *match = simplify->path;
-                       int len = simplify->len;
+       int i;
 
-                       if (!match)
-                               break;
-                       if (len > pathlen)
-                               len = pathlen;
-                       if (!memcmp(path, match, len))
-                               return 0;
-                       simplify++;
-               }
-               return 1;
+       if (!pathspec || !pathspec->nr)
+               return 0;
+
+       GUARD_PATHSPEC(pathspec,
+                      PATHSPEC_FROMTOP |
+                      PATHSPEC_MAXDEPTH |
+                      PATHSPEC_LITERAL |
+                      PATHSPEC_GLOB |
+                      PATHSPEC_ICASE |
+                      PATHSPEC_EXCLUDE);
+
+       for (i = 0; i < pathspec->nr; i++) {
+               const struct pathspec_item *item = &pathspec->items[i];
+               int len = item->nowildcard_len;
+
+               if (len > pathlen)
+                       len = pathlen;
+               if (!ps_strncmp(item, item->match, path, len))
+                       return 0;
        }
-       return 0;
+
+       return 1;
 }
 
 /*
@@ -1380,19 +1388,33 @@ static int simplify_away(const char *path, int pathlen, const struct path_simpli
  *   2. the path is a directory prefix of some element in the
  *      pathspec
  */
-static int exclude_matches_pathspec(const char *path, int len,
-               const struct path_simplify *simplify)
-{
-       if (simplify) {
-               for (; simplify->path; simplify++) {
-                       if (len == simplify->len
-                           && !memcmp(path, simplify->path, len))
-                               return 1;
-                       if (len < simplify->len
-                           && simplify->path[len] == '/'
-                           && !memcmp(path, simplify->path, len))
-                               return 1;
-               }
+static int exclude_matches_pathspec(const char *path, int pathlen,
+                                   const struct pathspec *pathspec)
+{
+       int i;
+
+       if (!pathspec || !pathspec->nr)
+               return 0;
+
+       GUARD_PATHSPEC(pathspec,
+                      PATHSPEC_FROMTOP |
+                      PATHSPEC_MAXDEPTH |
+                      PATHSPEC_LITERAL |
+                      PATHSPEC_GLOB |
+                      PATHSPEC_ICASE |
+                      PATHSPEC_EXCLUDE);
+
+       for (i = 0; i < pathspec->nr; i++) {
+               const struct pathspec_item *item = &pathspec->items[i];
+               int len = item->nowildcard_len;
+
+               if (len == pathlen &&
+                   !ps_strncmp(item, item->match, path, pathlen))
+                       return 1;
+               if (len > pathlen &&
+                   item->match[pathlen] == '/' &&
+                   !ps_strncmp(item, item->match, path, pathlen))
+                       return 1;
        }
        return 0;
 }
@@ -1460,7 +1482,7 @@ static enum path_treatment treat_one_path(struct dir_struct *dir,
                                          struct untracked_cache_dir *untracked,
                                          struct strbuf *path,
                                          int baselen,
-                                         const struct path_simplify *simplify,
+                                         const struct pathspec *pathspec,
                                          int dtype, struct dirent *de)
 {
        int exclude;
@@ -1512,7 +1534,7 @@ static enum path_treatment treat_one_path(struct dir_struct *dir,
        case DT_DIR:
                strbuf_addch(path, '/');
                return treat_directory(dir, untracked, path->buf, path->len,
-                                      baselen, exclude, simplify);
+                                      baselen, exclude, pathspec);
        case DT_REG:
        case DT_LNK:
                return exclude ? path_excluded : path_untracked;
@@ -1524,7 +1546,7 @@ static enum path_treatment treat_path_fast(struct dir_struct *dir,
                                           struct cached_dir *cdir,
                                           struct strbuf *path,
                                           int baselen,
-                                          const struct path_simplify *simplify)
+                                          const struct pathspec *pathspec)
 {
        strbuf_setlen(path, baselen);
        if (!cdir->ucd) {
@@ -1541,7 +1563,7 @@ static enum path_treatment treat_path_fast(struct dir_struct *dir,
                 * with check_only set.
                 */
                return read_directory_recursive(dir, path->buf, path->len,
-                                               cdir->ucd, 1, simplify);
+                                               cdir->ucd, 1, pathspec);
        /*
         * We get path_recurse in the first run when
         * directory_exists_in_index() returns index_nonexistent. We
@@ -1556,23 +1578,23 @@ static enum path_treatment treat_path(struct dir_struct *dir,
                                      struct cached_dir *cdir,
                                      struct strbuf *path,
                                      int baselen,
-                                     const struct path_simplify *simplify)
+                                     const struct pathspec *pathspec)
 {
        int dtype;
        struct dirent *de = cdir->de;
 
        if (!de)
                return treat_path_fast(dir, untracked, cdir, path,
-                                      baselen, simplify);
+                                      baselen, pathspec);
        if (is_dot_or_dotdot(de->d_name) || !strcmp(de->d_name, ".git"))
                return path_none;
        strbuf_setlen(path, baselen);
        strbuf_addstr(path, de->d_name);
-       if (simplify_away(path->buf, path->len, simplify))
+       if (simplify_away(path->buf, path->len, pathspec))
                return path_none;
 
        dtype = DTYPE(de);
-       return treat_one_path(dir, untracked, path, baselen, simplify, dtype, de);
+       return treat_one_path(dir, untracked, path, baselen, pathspec, dtype, de);
 }
 
 static void add_untracked(struct untracked_cache_dir *dir, const char *name)
@@ -1703,7 +1725,7 @@ static void close_cached_dir(struct cached_dir *cdir)
 static enum path_treatment read_directory_recursive(struct dir_struct *dir,
                                    const char *base, int baselen,
                                    struct untracked_cache_dir *untracked, int check_only,
-                                   const struct path_simplify *simplify)
+                                   const struct pathspec *pathspec)
 {
        struct cached_dir cdir;
        enum path_treatment state, subdir_state, dir_state = path_none;
@@ -1719,7 +1741,8 @@ static enum path_treatment read_directory_recursive(struct dir_struct *dir,
 
        while (!read_cached_dir(&cdir)) {
                /* check how the file or directory should be treated */
-               state = treat_path(dir, untracked, &cdir, &path, baselen, simplify);
+               state = treat_path(dir, untracked, &cdir, &path,
+                                  baselen, pathspec);
 
                if (state > dir_state)
                        dir_state = state;
@@ -1731,8 +1754,9 @@ static enum path_treatment read_directory_recursive(struct dir_struct *dir,
                                              path.buf + baselen,
                                              path.len - baselen);
                        subdir_state =
-                               read_directory_recursive(dir, path.buf, path.len,
-                                                        ud, check_only, simplify);
+                               read_directory_recursive(dir, path.buf,
+                                                        path.len, ud,
+                                                        check_only, pathspec);
                        if (subdir_state > dir_state)
                                dir_state = subdir_state;
                }
@@ -1756,7 +1780,7 @@ static enum path_treatment read_directory_recursive(struct dir_struct *dir,
                        else if ((dir->flags & DIR_SHOW_IGNORED_TOO) ||
                                ((dir->flags & DIR_COLLECT_IGNORED) &&
                                exclude_matches_pathspec(path.buf, path.len,
-                                       simplify)))
+                                                        pathspec)))
                                dir_add_ignored(dir, path.buf, path.len);
                        break;
 
@@ -1787,36 +1811,9 @@ static int cmp_name(const void *p1, const void *p2)
        return name_compare(e1->name, e1->len, e2->name, e2->len);
 }
 
-static struct path_simplify *create_simplify(const char **pathspec)
-{
-       int nr, alloc = 0;
-       struct path_simplify *simplify = NULL;
-
-       if (!pathspec)
-               return NULL;
-
-       for (nr = 0 ; ; nr++) {
-               const char *match;
-               ALLOC_GROW(simplify, nr + 1, alloc);
-               match = *pathspec++;
-               if (!match)
-                       break;
-               simplify[nr].path = match;
-               simplify[nr].len = simple_length(match);
-       }
-       simplify[nr].path = NULL;
-       simplify[nr].len = 0;
-       return simplify;
-}
-
-static void free_simplify(struct path_simplify *simplify)
-{
-       free(simplify);
-}
-
 static int treat_leading_path(struct dir_struct *dir,
                              const char *path, int len,
-                             const struct path_simplify *simplify)
+                             const struct pathspec *pathspec)
 {
        struct strbuf sb = STRBUF_INIT;
        int baselen, rc = 0;
@@ -1840,9 +1837,9 @@ static int treat_leading_path(struct dir_struct *dir,
                strbuf_add(&sb, path, baselen);
                if (!is_directory(sb.buf))
                        break;
-               if (simplify_away(sb.buf, sb.len, simplify))
+               if (simplify_away(sb.buf, sb.len, pathspec))
                        break;
-               if (treat_one_path(dir, NULL, &sb, baselen, simplify,
+               if (treat_one_path(dir, NULL, &sb, baselen, pathspec,
                                   DT_DIR, NULL) == path_none)
                        break; /* do not recurse into it */
                if (len <= baselen) {
@@ -2010,33 +2007,14 @@ static struct untracked_cache_dir *validate_untracked_cache(struct dir_struct *d
        return root;
 }
 
-int read_directory(struct dir_struct *dir, const char *path, int len, const struct pathspec *pathspec)
+int read_directory(struct dir_struct *dir, const char *path,
+                  int len, const struct pathspec *pathspec)
 {
-       struct path_simplify *simplify;
        struct untracked_cache_dir *untracked;
 
-       /*
-        * Check out create_simplify()
-        */
-       if (pathspec)
-               GUARD_PATHSPEC(pathspec,
-                              PATHSPEC_FROMTOP |
-                              PATHSPEC_MAXDEPTH |
-                              PATHSPEC_LITERAL |
-                              PATHSPEC_GLOB |
-                              PATHSPEC_ICASE |
-                              PATHSPEC_EXCLUDE);
-
        if (has_symlink_leading_path(path, len))
                return dir->nr;
 
-       /*
-        * exclude patterns are treated like positive ones in
-        * create_simplify. Usually exclude patterns should be a
-        * subset of positive ones, which has no impacts on
-        * create_simplify().
-        */
-       simplify = create_simplify(pathspec ? pathspec->_raw : NULL);
        untracked = validate_untracked_cache(dir, len, pathspec);
        if (!untracked)
                /*
@@ -2044,9 +2022,8 @@ int read_directory(struct dir_struct *dir, const char *path, int len, const stru
                 * e.g. prep_exclude()
                 */
                dir->untracked = NULL;
-       if (!len || treat_leading_path(dir, path, len, simplify))
-               read_directory_recursive(dir, path, len, untracked, 0, simplify);
-       free_simplify(simplify);
+       if (!len || treat_leading_path(dir, path, len, pathspec))
+               read_directory_recursive(dir, path, len, untracked, 0, pathspec);
        QSORT(dir->entries, dir->nr, cmp_name);
        QSORT(dir->ignored, dir->ignored_nr, cmp_name);
        if (dir->untracked) {
index 22ca74a126e79995607e68a557ae8bd4c2ab02f7..ff2509ddd1519b19090bd4df6ed7bfdb4909d499 100644 (file)
@@ -67,20 +67,19 @@ static struct pathspec_magic {
        char mnemonic; /* this cannot be ':'! */
        const char *name;
 } pathspec_magic[] = {
-       { PATHSPEC_FROMTOP, '/', "top" },
-       { PATHSPEC_LITERAL,   0, "literal" },
-       { PATHSPEC_GLOB,   '\0', "glob" },
-       { PATHSPEC_ICASE,  '\0', "icase" },
-       { PATHSPEC_EXCLUDE, '!', "exclude" },
+       { PATHSPEC_FROMTOP,  '/', "top" },
+       { PATHSPEC_LITERAL, '\0', "literal" },
+       { PATHSPEC_GLOB,    '\0', "glob" },
+       { PATHSPEC_ICASE,   '\0', "icase" },
+       { PATHSPEC_EXCLUDE,  '!', "exclude" },
 };
 
-static void prefix_short_magic(struct strbuf *sb, int prefixlen,
-                              unsigned short_magic)
+static void prefix_magic(struct strbuf *sb, int prefixlen, unsigned magic)
 {
        int i;
        strbuf_addstr(sb, ":(");
        for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
-               if (short_magic & pathspec_magic[i].bit) {
+               if (magic & pathspec_magic[i].bit) {
                        if (sb->buf[sb->len - 1] != '(')
                                strbuf_addch(sb, ',');
                        strbuf_addstr(sb, pathspec_magic[i].name);
@@ -88,54 +87,61 @@ static void prefix_short_magic(struct strbuf *sb, int prefixlen,
        strbuf_addf(sb, ",prefix:%d)", prefixlen);
 }
 
-/*
- * Take an element of a pathspec and check for magic signatures.
- * Append the result to the prefix. Return the magic bitmap.
- *
- * For now, we only parse the syntax and throw out anything other than
- * "top" magic.
- *
- * NEEDSWORK: This needs to be rewritten when we start migrating
- * get_pathspec() users to use the "struct pathspec" interface.  For
- * example, a pathspec element may be marked as case-insensitive, but
- * the prefix part must always match literally, and a single stupid
- * string cannot express such a case.
- */
-static unsigned prefix_pathspec(struct pathspec_item *item,
-                               unsigned *p_short_magic,
-                               const char **raw, unsigned flags,
-                               const char *prefix, int prefixlen,
-                               const char *elt)
+static inline int get_literal_global(void)
 {
-       static int literal_global = -1;
-       static int glob_global = -1;
-       static int noglob_global = -1;
-       static int icase_global = -1;
-       unsigned magic = 0, short_magic = 0, global_magic = 0;
-       const char *copyfrom = elt, *long_magic_end = NULL;
-       char *match;
-       int i, pathspec_prefix = -1;
+       static int literal = -1;
+
+       if (literal < 0)
+               literal = git_env_bool(GIT_LITERAL_PATHSPECS_ENVIRONMENT, 0);
+
+       return literal;
+}
+
+static inline int get_glob_global(void)
+{
+       static int glob = -1;
+
+       if (glob < 0)
+               glob = git_env_bool(GIT_GLOB_PATHSPECS_ENVIRONMENT, 0);
+
+       return glob;
+}
+
+static inline int get_noglob_global(void)
+{
+       static int noglob = -1;
+
+       if (noglob < 0)
+               noglob = git_env_bool(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, 0);
+
+       return noglob;
+}
+
+static inline int get_icase_global(void)
+{
+       static int icase = -1;
 
-       if (literal_global < 0)
-               literal_global = git_env_bool(GIT_LITERAL_PATHSPECS_ENVIRONMENT, 0);
-       if (literal_global)
+       if (icase < 0)
+               icase = git_env_bool(GIT_ICASE_PATHSPECS_ENVIRONMENT, 0);
+
+       return icase;
+}
+
+static int get_global_magic(int element_magic)
+{
+       int global_magic = 0;
+
+       if (get_literal_global())
                global_magic |= PATHSPEC_LITERAL;
 
-       if (glob_global < 0)
-               glob_global = git_env_bool(GIT_GLOB_PATHSPECS_ENVIRONMENT, 0);
-       if (glob_global)
+       /* --glob-pathspec is overridden by :(literal) */
+       if (get_glob_global() && !(element_magic & PATHSPEC_LITERAL))
                global_magic |= PATHSPEC_GLOB;
 
-       if (noglob_global < 0)
-               noglob_global = git_env_bool(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, 0);
-
-       if (glob_global && noglob_global)
+       if (get_glob_global() && get_noglob_global())
                die(_("global 'glob' and 'noglob' pathspec settings are incompatible"));
 
-
-       if (icase_global < 0)
-               icase_global = git_env_bool(GIT_ICASE_PATHSPECS_ENVIRONMENT, 0);
-       if (icase_global)
+       if (get_icase_global())
                global_magic |= PATHSPEC_ICASE;
 
        if ((global_magic & PATHSPEC_LITERAL) &&
@@ -143,84 +149,177 @@ static unsigned prefix_pathspec(struct pathspec_item *item,
                die(_("global 'literal' pathspec setting is incompatible "
                      "with all other global pathspec settings"));
 
-       if (flags & PATHSPEC_LITERAL_PATH)
-               global_magic = 0;
+       /* --noglob-pathspec adds :(literal) _unless_ :(glob) is specified */
+       if (get_noglob_global() && !(element_magic & PATHSPEC_GLOB))
+               global_magic |= PATHSPEC_LITERAL;
+
+       return global_magic;
+}
 
-       if (elt[0] != ':' || literal_global ||
-           (flags & PATHSPEC_LITERAL_PATH)) {
-               ; /* nothing to do */
-       } else if (elt[1] == '(') {
-               /* longhand */
-               const char *nextat;
-               for (copyfrom = elt + 2;
-                    *copyfrom && *copyfrom != ')';
-                    copyfrom = nextat) {
-                       size_t len = strcspn(copyfrom, ",)");
-                       if (copyfrom[len] == ',')
-                               nextat = copyfrom + len + 1;
-                       else
-                               /* handle ')' and '\0' */
-                               nextat = copyfrom + len;
-                       if (!len)
-                               continue;
-                       for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
-                               if (strlen(pathspec_magic[i].name) == len &&
-                                   !strncmp(pathspec_magic[i].name, copyfrom, len)) {
-                                       magic |= pathspec_magic[i].bit;
-                                       break;
-                               }
-                               if (starts_with(copyfrom, "prefix:")) {
-                                       char *endptr;
-                                       pathspec_prefix = strtol(copyfrom + 7,
-                                                                &endptr, 10);
-                                       if (endptr - copyfrom != len)
-                                               die(_("invalid parameter for pathspec magic 'prefix'"));
-                                       /* "i" would be wrong, but it does not matter */
-                                       break;
-                               }
+/*
+ * Parse the pathspec element looking for long magic
+ *
+ * saves all magic in 'magic'
+ * if prefix magic is used, save the prefix length in 'prefix_len'
+ * returns the position in 'elem' after all magic has been parsed
+ */
+static const char *parse_long_magic(unsigned *magic, int *prefix_len,
+                                   const char *elem)
+{
+       const char *pos;
+       const char *nextat;
+
+       for (pos = elem + 2; *pos && *pos != ')'; pos = nextat) {
+               size_t len = strcspn(pos, ",)");
+               int i;
+
+               if (pos[len] == ',')
+                       nextat = pos + len + 1; /* handle ',' */
+               else
+                       nextat = pos + len; /* handle ')' and '\0' */
+
+               if (!len)
+                       continue;
+
+               if (starts_with(pos, "prefix:")) {
+                       char *endptr;
+                       *prefix_len = strtol(pos + 7, &endptr, 10);
+                       if (endptr - pos != len)
+                               die(_("invalid parameter for pathspec magic 'prefix'"));
+                       continue;
+               }
+
+               for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
+                       if (strlen(pathspec_magic[i].name) == len &&
+                           !strncmp(pathspec_magic[i].name, pos, len)) {
+                               *magic |= pathspec_magic[i].bit;
+                               break;
                        }
-                       if (ARRAY_SIZE(pathspec_magic) <= i)
-                               die(_("Invalid pathspec magic '%.*s' in '%s'"),
-                                   (int) len, copyfrom, elt);
                }
-               if (*copyfrom != ')')
-                       die(_("Missing ')' at the end of pathspec magic in '%s'"), elt);
-               long_magic_end = copyfrom;
-               copyfrom++;
-       } else {
-               /* shorthand */
-               for (copyfrom = elt + 1;
-                    *copyfrom && *copyfrom != ':';
-                    copyfrom++) {
-                       char ch = *copyfrom;
 
-                       if (!is_pathspec_magic(ch))
+               if (ARRAY_SIZE(pathspec_magic) <= i)
+                       die(_("Invalid pathspec magic '%.*s' in '%s'"),
+                           (int) len, pos, elem);
+       }
+
+       if (*pos != ')')
+               die(_("Missing ')' at the end of pathspec magic in '%s'"),
+                   elem);
+       pos++;
+
+       return pos;
+}
+
+/*
+ * Parse the pathspec element looking for short magic
+ *
+ * saves all magic in 'magic'
+ * returns the position in 'elem' after all magic has been parsed
+ */
+static const char *parse_short_magic(unsigned *magic, const char *elem)
+{
+       const char *pos;
+
+       for (pos = elem + 1; *pos && *pos != ':'; pos++) {
+               char ch = *pos;
+               int i;
+
+               if (!is_pathspec_magic(ch))
+                       break;
+
+               for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
+                       if (pathspec_magic[i].mnemonic == ch) {
+                               *magic |= pathspec_magic[i].bit;
                                break;
-                       for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
-                               if (pathspec_magic[i].mnemonic == ch) {
-                                       short_magic |= pathspec_magic[i].bit;
-                                       break;
-                               }
-                       if (ARRAY_SIZE(pathspec_magic) <= i)
-                               die(_("Unimplemented pathspec magic '%c' in '%s'"),
-                                   ch, elt);
+                       }
                }
-               if (*copyfrom == ':')
-                       copyfrom++;
+
+               if (ARRAY_SIZE(pathspec_magic) <= i)
+                       die(_("Unimplemented pathspec magic '%c' in '%s'"),
+                           ch, elem);
        }
 
-       magic |= short_magic;
-       *p_short_magic = short_magic;
+       if (*pos == ':')
+               pos++;
 
-       /* --noglob-pathspec adds :(literal) _unless_ :(glob) is specified */
-       if (noglob_global && !(magic & PATHSPEC_GLOB))
-               global_magic |= PATHSPEC_LITERAL;
+       return pos;
+}
 
-       /* --glob-pathspec is overridden by :(literal) */
-       if ((global_magic & PATHSPEC_GLOB) && (magic & PATHSPEC_LITERAL))
-               global_magic &= ~PATHSPEC_GLOB;
+static const char *parse_element_magic(unsigned *magic, int *prefix_len,
+                                      const char *elem)
+{
+       if (elem[0] != ':' || get_literal_global())
+               return elem; /* nothing to do */
+       else if (elem[1] == '(')
+               /* longhand */
+               return parse_long_magic(magic, prefix_len, elem);
+       else
+               /* shorthand */
+               return parse_short_magic(magic, elem);
+}
+
+static void strip_submodule_slash_cheap(struct pathspec_item *item)
+{
+       if (item->len >= 1 && item->match[item->len - 1] == '/') {
+               int i = cache_name_pos(item->match, item->len - 1);
+
+               if (i >= 0 && S_ISGITLINK(active_cache[i]->ce_mode)) {
+                       item->len--;
+                       item->match[item->len] = '\0';
+               }
+       }
+}
+
+static void strip_submodule_slash_expensive(struct pathspec_item *item)
+{
+       int i;
+
+       for (i = 0; i < active_nr; i++) {
+               struct cache_entry *ce = active_cache[i];
+               int ce_len = ce_namelen(ce);
+
+               if (!S_ISGITLINK(ce->ce_mode))
+                       continue;
+
+               if (item->len <= ce_len || item->match[ce_len] != '/' ||
+                   memcmp(ce->name, item->match, ce_len))
+                       continue;
+
+               if (item->len == ce_len + 1) {
+                       /* strip trailing slash */
+                       item->len--;
+                       item->match[item->len] = '\0';
+               } else {
+                       die(_("Pathspec '%s' is in submodule '%.*s'"),
+                           item->original, ce_len, ce->name);
+               }
+       }
+}
 
-       magic |= global_magic;
+/*
+ * Perform the initialization of a pathspec_item based on a pathspec element.
+ */
+static void init_pathspec_item(struct pathspec_item *item, unsigned flags,
+                              const char *prefix, int prefixlen,
+                              const char *elt)
+{
+       unsigned magic = 0, element_magic = 0;
+       const char *copyfrom = elt;
+       char *match;
+       int pathspec_prefix = -1;
+
+       /* PATHSPEC_LITERAL_PATH ignores magic */
+       if (flags & PATHSPEC_LITERAL_PATH) {
+               magic = PATHSPEC_LITERAL;
+       } else {
+               copyfrom = parse_element_magic(&element_magic,
+                                              &pathspec_prefix,
+                                              elt);
+               magic |= element_magic;
+               magic |= get_global_magic(element_magic);
+       }
+
+       item->magic = magic;
 
        if (pathspec_prefix >= 0 &&
            (prefixlen || (prefix && *prefix)))
@@ -229,6 +328,7 @@ static unsigned prefix_pathspec(struct pathspec_item *item,
        if ((magic & PATHSPEC_LITERAL) && (magic & PATHSPEC_GLOB))
                die(_("%s: 'literal' and 'glob' are incompatible"), elt);
 
+       /* Create match string which will be used for pathspec matching */
        if (pathspec_prefix >= 0) {
                match = xstrdup(copyfrom);
                prefixlen = pathspec_prefix;
@@ -236,69 +336,47 @@ static unsigned prefix_pathspec(struct pathspec_item *item,
                match = xstrdup(copyfrom);
                prefixlen = 0;
        } else {
-               match = prefix_path_gently(prefix, prefixlen, &prefixlen, copyfrom);
+               match = prefix_path_gently(prefix, prefixlen,
+                                          &prefixlen, copyfrom);
                if (!match)
                        die(_("%s: '%s' is outside repository"), elt, copyfrom);
        }
-       *raw = item->match = match;
+
+       item->match = match;
+       item->len = strlen(item->match);
+       item->prefix = prefixlen;
+
        /*
         * Prefix the pathspec (keep all magic) and assign to
         * original. Useful for passing to another command.
         */
-       if (flags & PATHSPEC_PREFIX_ORIGIN) {
+       if ((flags & PATHSPEC_PREFIX_ORIGIN) &&
+           prefixlen && !get_literal_global()) {
                struct strbuf sb = STRBUF_INIT;
-               if (prefixlen && !literal_global) {
-                       /* Preserve the actual prefix length of each pattern */
-                       if (short_magic)
-                               prefix_short_magic(&sb, prefixlen, short_magic);
-                       else if (long_magic_end) {
-                               strbuf_add(&sb, elt, long_magic_end - elt);
-                               strbuf_addf(&sb, ",prefix:%d)", prefixlen);
-                       } else
-                               strbuf_addf(&sb, ":(prefix:%d)", prefixlen);
-               }
+
+               /* Preserve the actual prefix length of each pattern */
+               prefix_magic(&sb, prefixlen, element_magic);
+
                strbuf_addstr(&sb, match);
                item->original = strbuf_detach(&sb, NULL);
-       } else
-               item->original = elt;
-       item->len = strlen(item->match);
-       item->prefix = prefixlen;
-
-       if ((flags & PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP) &&
-           (item->len >= 1 && item->match[item->len - 1] == '/') &&
-           (i = cache_name_pos(item->match, item->len - 1)) >= 0 &&
-           S_ISGITLINK(active_cache[i]->ce_mode)) {
-               item->len--;
-               match[item->len] = '\0';
+       } else {
+               item->original = xstrdup(elt);
        }
 
+       if (flags & PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP)
+               strip_submodule_slash_cheap(item);
+
        if (flags & PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE)
-               for (i = 0; i < active_nr; i++) {
-                       struct cache_entry *ce = active_cache[i];
-                       int ce_len = ce_namelen(ce);
-
-                       if (!S_ISGITLINK(ce->ce_mode))
-                               continue;
-
-                       if (item->len <= ce_len || match[ce_len] != '/' ||
-                           memcmp(ce->name, match, ce_len))
-                               continue;
-                       if (item->len == ce_len + 1) {
-                               /* strip trailing slash */
-                               item->len--;
-                               match[item->len] = '\0';
-                       } else
-                               die (_("Pathspec '%s' is in submodule '%.*s'"),
-                                    elt, ce_len, ce->name);
-               }
+               strip_submodule_slash_expensive(item);
 
-       if (magic & PATHSPEC_LITERAL)
+       if (magic & PATHSPEC_LITERAL) {
                item->nowildcard_len = item->len;
-       else {
+       else {
                item->nowildcard_len = simple_length(item->match);
                if (item->nowildcard_len < prefixlen)
                        item->nowildcard_len = prefixlen;
        }
+
        item->flags = 0;
        if (magic & PATHSPEC_GLOB) {
                /*
@@ -315,7 +393,6 @@ static unsigned prefix_pathspec(struct pathspec_item *item,
        /* sanity checks, pathspec matchers assume these are sane */
        assert(item->nowildcard_len <= item->len &&
               item->prefix         <= item->len);
-       return magic;
 }
 
 static int pathspec_item_cmp(const void *a_, const void *b_)
@@ -328,22 +405,22 @@ static int pathspec_item_cmp(const void *a_, const void *b_)
 }
 
 static void NORETURN unsupported_magic(const char *pattern,
-                                      unsigned magic,
-                                      unsigned short_magic)
+                                      unsigned magic)
 {
        struct strbuf sb = STRBUF_INIT;
-       int i, n;
-       for (n = i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
+       int i;
+       for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
                const struct pathspec_magic *m = pathspec_magic + i;
                if (!(magic & m->bit))
                        continue;
                if (sb.len)
-                       strbuf_addch(&sb, ' ');
-               if (short_magic & m->bit)
-                       strbuf_addf(&sb, "'%c'", m->mnemonic);
+                       strbuf_addstr(&sb, ", ");
+
+               if (m->mnemonic)
+                       strbuf_addf(&sb, _("'%s' (mnemonic: '%c')"),
+                                   m->name, m->mnemonic);
                else
                        strbuf_addf(&sb, "'%s'", m->name);
-               n++;
        }
        /*
         * We may want to substitute "this command" with a command
@@ -381,8 +458,6 @@ void parse_pathspec(struct pathspec *pathspec,
 
        /* No arguments with prefix -> prefix pathspec */
        if (!entry) {
-               static const char *raw[2];
-
                if (flags & PATHSPEC_PREFER_FULL)
                        return;
 
@@ -390,14 +465,11 @@ void parse_pathspec(struct pathspec *pathspec,
                        die("BUG: PATHSPEC_PREFER_CWD requires arguments");
 
                pathspec->items = item = xcalloc(1, sizeof(*item));
-               item->match = prefix;
-               item->original = prefix;
+               item->match = xstrdup(prefix);
+               item->original = xstrdup(prefix);
                item->nowildcard_len = item->len = strlen(prefix);
                item->prefix = item->len;
-               raw[0] = prefix;
-               raw[1] = NULL;
                pathspec->nr = 1;
-               pathspec->_raw = raw;
                return;
        }
 
@@ -415,25 +487,17 @@ void parse_pathspec(struct pathspec *pathspec,
        pathspec->nr = n;
        ALLOC_ARRAY(pathspec->items, n);
        item = pathspec->items;
-       pathspec->_raw = argv;
        prefixlen = prefix ? strlen(prefix) : 0;
 
        for (i = 0; i < n; i++) {
-               unsigned short_magic;
                entry = argv[i];
 
-               item[i].magic = prefix_pathspec(item + i, &short_magic,
-                                               argv + i, flags,
-                                               prefix, prefixlen, entry);
-               if ((flags & PATHSPEC_LITERAL_PATH) &&
-                   !(magic_mask & PATHSPEC_LITERAL))
-                       item[i].magic |= PATHSPEC_LITERAL;
+               init_pathspec_item(item + i, flags, prefix, prefixlen, entry);
+
                if (item[i].magic & PATHSPEC_EXCLUDE)
                        nr_exclude++;
                if (item[i].magic & magic_mask)
-                       unsupported_magic(entry,
-                                         item[i].magic & magic_mask,
-                                         short_magic);
+                       unsupported_magic(entry, item[i].magic & magic_mask);
 
                if ((flags & PATHSPEC_SYMLINK_LEADING_PATH) &&
                    has_symlink_leading_path(item[i].match, item[i].len)) {
@@ -457,45 +521,29 @@ void parse_pathspec(struct pathspec *pathspec,
        }
 }
 
-/*
- * N.B. get_pathspec() is deprecated in favor of the "struct pathspec"
- * based interface - see pathspec.c:parse_pathspec().
- *
- * Arguments:
- *  - prefix - a path relative to the root of the working tree
- *  - pathspec - a list of paths underneath the prefix path
- *
- * Iterates over pathspec, prepending each path with prefix,
- * and return the resulting list.
- *
- * If pathspec is empty, return a singleton list containing prefix.
- *
- * If pathspec and prefix are both empty, return an empty list.
- *
- * This is typically used by built-in commands such as add.c, in order
- * to normalize argv arguments provided to the built-in into a list of
- * paths to process, all relative to the root of the working tree.
- */
-const char **get_pathspec(const char *prefix, const char **pathspec)
-{
-       struct pathspec ps;
-       parse_pathspec(&ps,
-                      PATHSPEC_ALL_MAGIC &
-                      ~(PATHSPEC_FROMTOP | PATHSPEC_LITERAL),
-                      PATHSPEC_PREFER_CWD,
-                      prefix, pathspec);
-       return ps._raw;
-}
-
 void copy_pathspec(struct pathspec *dst, const struct pathspec *src)
 {
+       int i;
+
        *dst = *src;
        ALLOC_ARRAY(dst->items, dst->nr);
        COPY_ARRAY(dst->items, src->items, dst->nr);
+
+       for (i = 0; i < dst->nr; i++) {
+               dst->items[i].match = xstrdup(src->items[i].match);
+               dst->items[i].original = xstrdup(src->items[i].original);
+       }
 }
 
 void clear_pathspec(struct pathspec *pathspec)
 {
+       int i;
+
+       for (i = 0; i < pathspec->nr; i++) {
+               free(pathspec->items[i].match);
+               free(pathspec->items[i].original);
+       }
        free(pathspec->items);
        pathspec->items = NULL;
+       pathspec->nr = 0;
 }
index 59809e4793a20e3030462ec23bff2b5358283282..49fd823ddfe9eb96c983f9f812f6ca1dcf062951 100644 (file)
 #define PATHSPEC_ONESTAR 1     /* the pathspec pattern satisfies GFNM_ONESTAR */
 
 struct pathspec {
-       const char **_raw; /* get_pathspec() result, not freed by clear_pathspec() */
        int nr;
        unsigned int has_wildcard:1;
        unsigned int recursive:1;
        unsigned magic;
        int max_depth;
        struct pathspec_item {
-               const char *match;
-               const char *original;
+               char *match;
+               char *original;
                unsigned magic;
                int len, prefix;
                int nowildcard_len;