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| author | Lennart Poettering <lennart@poettering.net> | 2013-09-26 19:58:33 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2013-09-26 20:20:30 +0200 |
| commit | e203f7c3ad6a95dfa6179e30904ce0432ea0de91 (patch) | |
| tree | a9c9dc977839311c525d19c90c5fb3827045dbc1 /src/shared/path-util.h | |
| parent | baa89da40a1d42242c9c62603501ada7e9e52613 (diff) | |
util: properly handle the root dir in PATH_FOREACH_PREFIX
Also add PATH_FOREACH_PREFIX_MORE which includes the specified dir
itself in the iteration
Diffstat (limited to 'src/shared/path-util.h')
| -rw-r--r-- | src/shared/path-util.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/shared/path-util.h b/src/shared/path-util.h index 03f2cf273..0a42de7e2 100644 --- a/src/shared/path-util.h +++ b/src/shared/path-util.h @@ -52,5 +52,12 @@ int path_is_os_tree(const char *path); int find_binary(const char *name, char **filename); +/* Iterates through the path prefixes of the specified path, going up + * the tree, to root. Also returns "" (and not "/"!) for the root + * directory. Excludes the specified directory itself */ #define PATH_FOREACH_PREFIX(prefix, path) \ - for (char *_slash = strrchr(path_kill_slashes(strcpy(prefix, path)), '/'); _slash && !(*_slash = 0); _slash = strrchr((prefix), '/')) + for (char *_slash = ({ path_kill_slashes(strcpy(prefix, path)); streq(prefix, "/") ? NULL : strrchr(prefix, '/'); }); _slash && !(*_slash = 0); _slash = strrchr((prefix), '/')) + +/* Same as PATH_FOREACH_PREFIX but also includes the specified path itself */ +#define PATH_FOREACH_PREFIX_MORE(prefix, path) \ + for (char *_slash = ({ path_kill_slashes(strcpy(prefix, path)); if (streq(prefix, "/")) prefix[0] = 0; strrchr(prefix, 0); }); _slash && !(*_slash = 0); _slash = strrchr((prefix), '/')) |