diff options
Diffstat (limited to 'source/blender/blenlib/intern/path_util.c')
| -rw-r--r-- | source/blender/blenlib/intern/path_util.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/path_util.c b/source/blender/blenlib/intern/path_util.c index cff11ec0361..6272f2109d2 100644 --- a/source/blender/blenlib/intern/path_util.c +++ b/source/blender/blenlib/intern/path_util.c @@ -1438,6 +1438,37 @@ bool BLI_path_extension_check_glob(const char *str, const char *ext_fnmatch) return false; } +/** + * Does basic validation of the given glob string, to prevent common issues from string truncation. + * + * For now, only forbids last group to be a wildcard-only one, if there are more than one group + * (i.e. things like "*.txt;*.cpp;*" are changed to "*.txt;*.cpp;") + * + * \returns true if it had to modify given \a ext_fnmatch pattern. + */ +bool BLI_path_extension_glob_validate(char *ext_fnmatch) +{ + bool only_wildcards = false; + + for (size_t i = strlen(ext_fnmatch); i-- > 0; ) { + if (ext_fnmatch[i] == ';') { + /* Group separator, we truncate here if we only had wildcards so far. Otherwise, all is sound and fine. */ + if (only_wildcards) { + ext_fnmatch[i] = '\0'; + return true; + } + return false; + } + if (!ELEM(ext_fnmatch[i], '?', '*')) { + /* Non-wildcard char, we can break here and consider the pattern valid. */ + return false; + } + /* So far, only wildcards in last group of the pattern... */ + only_wildcards = true; + } + /* Only one group in the pattern, so even if its only made of wildcard(s), it is assumed vaid. */ + return false; +} /** * Removes any existing extension on the end of \a path and appends \a ext. |