diff options
Diffstat (limited to 'Src/pattern.c')
| -rw-r--r-- | Src/pattern.c | 28 |
1 files changed, 22 insertions, 6 deletions
diff --git a/Src/pattern.c b/Src/pattern.c index 7d38988a0..7457cbd23 100644 --- a/Src/pattern.c +++ b/Src/pattern.c @@ -224,6 +224,22 @@ typedef zlong zrange_t; typedef unsigned long zrange_t; #endif +#ifdef MULTIBYTE_SUPPORT +/* + * Handle a byte that's not part of a valid character. + * + * This range in Unicode is recommended for purposes of this + * kind as it corresponds to invalid characters. + * + * Note that this strictly only works if wchar_t represents + * Unicode code points, which isn't necessarily true; however, + * converting an invalid character into an unknown format is + * a bit tricky... + */ +#define WCHAR_INVALID(ch) \ + ((wchar_t) (0xDC00 + STOUC(ch))) +#endif /* MULTIBYTE_SUPPORT */ + /* * Array of characters corresponding to zpc_chars enum, which it must match. */ @@ -353,10 +369,10 @@ metacharinc(char **x) return wc; } - /* Error. Treat as single byte. */ + /* Error. */ /* Reset the shift state for next time. */ memset(&shiftstate, 0, sizeof(shiftstate)); - return (wchar_t) STOUC(*(*x)++); + return WCHAR_INVALID(*(*x)++); } #else @@ -1867,10 +1883,10 @@ charref(char *x, char *y) ret = mbrtowc(&wc, x, y-x, &shiftstate); if (ret == MB_INVALID || ret == MB_INCOMPLETE) { - /* Error. Treat as single byte. */ + /* Error. */ /* Reset the shift state for next time. */ memset(&shiftstate, 0, sizeof(shiftstate)); - return (wchar_t) STOUC(*x); + return WCHAR_INVALID(*x); } return wc; @@ -1913,7 +1929,7 @@ charrefinc(char **x, char *y, int *z) size_t ret; if (!(patglobflags & GF_MULTIBYTE) || !(STOUC(**x) & 0x80)) - return (wchar_t) STOUC(*(*x)++); + return WCHAR_INVALID(*(*x)++); ret = mbrtowc(&wc, *x, y-*x, &shiftstate); @@ -1922,7 +1938,7 @@ charrefinc(char **x, char *y, int *z) *z = 1; /* Reset the shift state for next time. */ memset(&shiftstate, 0, sizeof(shiftstate)); - return (wchar_t) STOUC(*(*x)++); + return WCHAR_INVALID(*(*x)++); } /* Nulls here are normal characters */ |