diff options
| -rw-r--r-- | usr.bin/grep/regex/tre-fastmatch.c | 45 |
1 files changed, 36 insertions, 9 deletions
diff --git a/usr.bin/grep/regex/tre-fastmatch.c b/usr.bin/grep/regex/tre-fastmatch.c index 3e5394c..bf59b9f 100644 --- a/usr.bin/grep/regex/tre-fastmatch.c +++ b/usr.bin/grep/regex/tre-fastmatch.c @@ -98,6 +98,18 @@ static int fastcmp(const fastmatch_t *fg, const void *data, fg->pattern[siz] = '\0'; \ } \ +#define CONV_MBS_PAT(src, dest, destsz) \ + { \ + destsz = wcstombs(NULL, src, 0); \ + if (destsz == (size_t)-1) \ + return REG_BADPAT; \ + dest = malloc(destsz + 1); \ + if (dest == NULL) \ + return REG_ESPACE; \ + wcstombs(dest, src, destsz); \ + dest[destsz] = '\0'; \ + } \ + #define IS_OUT_OF_BOUNDS \ ((!fg->reversed \ ? ((type == STR_WIDE) ? ((j + fg->wlen) > len) \ @@ -630,7 +642,7 @@ tre_compile_fast(fastmatch_t *fg, const tre_char_t *pat, size_t n, if (escaped) { if (!_escmap) - _escmap = malloc(n * sizeof(bool)); + _escmap = calloc(n, sizeof(bool)); if (!_escmap) { free(tmp); @@ -714,8 +726,8 @@ badpat: { if (fg->wescmap != NULL) { - fg->escmap = malloc(fg->len * sizeof(bool)); - if (!fg->escmap) + fg->escmap = calloc(fg->len, sizeof(bool)); + if (fg->escmap == NULL) { tre_free_fast(fg); return REG_ESPACE; @@ -723,15 +735,29 @@ badpat: } escaped = false; - for (unsigned int i = 0; i < fg->len; i++) - if (fg->pattern[i] == '\\') - escaped = !escaped; - else if (fg->pattern[i] == '.' && fg->escmap && escaped) + char *_checkpat = NULL; + size_t _checklen = 0; + unsigned int escofs = 0; + /* + * Make a copy here of the original pattern, because fg->pattern has + * already been stripped of all escape sequences in the above processing. + * This is necessary if we wish to later treat fg->escmap as an actual, + * functional replacement of fg->wescmap. + */ + CONV_MBS_PAT(pat, _checkpat, _checklen); + for (unsigned int i = 0; i < n; i++) + if (_checkpat[i] == '\\') + { + escaped = !escaped; + if (escaped) + ++escofs; + } + else if (_checkpat[i] == '.' && fg->escmap != NULL && escaped) { - fg->escmap[i] = true; + fg->escmap[i - escofs] = true; escaped = false; } - else if (fg->pattern[i] == '.' && !escaped) + else if (_checkpat[i] == '.' && !escaped) { hasdot = i; if (firstdot == -1) @@ -739,6 +765,7 @@ badpat: } else escaped = false; + free(_checkpat); } #else SAVE_PATTERN(tmp, pos, fg->pattern, fg->len); |
