diff options
Diffstat (limited to 'base/string_util.h')
| -rw-r--r-- | base/string_util.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/base/string_util.h b/base/string_util.h index 5faa9cf..ca0496c 100644 --- a/base/string_util.h +++ b/base/string_util.h @@ -92,6 +92,29 @@ inline int swprintf(wchar_t* buffer, size_t size, const wchar_t* format, ...) { size_t strlcpy(char* dst, const char* src, size_t dst_size); size_t wcslcpy(wchar_t* dst, const wchar_t* src, size_t dst_size); +// Scan a wprintf format string to determine whether it's portable across a +// variety of systems. This function only checks that the conversion +// specifiers used by the format string are supported and have the same meaning +// on a variety of systems. It doesn't check for other errors that might occur +// within a format string. +// +// Nonportable conversion specifiers for wprintf are: +// - 's' and 'c' without an 'l' length modifier. %s and %c operate on char +// data on all systems except Windows, which treat them as wchar_t data. +// Use %ls and %lc for wchar_t data instead. +// - 'S' and 'C', which operate on wchar_t data on all systems except Windows, +// which treat them as char data. Use %ls and %lc for wchar_t data +// instead. +// - 'F', which is not identified by Windows wprintf documentation. +// - 'D', 'O', and 'U', which are deprecated and not available on all systems. +// Use %ld, %lo, and %lu instead. +// +// Note that there is no portable conversion specifier for char data when +// working with wprintf. +// +// This function is intended to be called from base::vswprintf. +bool IsWprintfFormatPortable(const wchar_t* format); + } // namespace base #if defined(OS_WIN) |