diff options
| -rw-r--r-- | findutils/grep.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/findutils/grep.c b/findutils/grep.c index f2ed01e74..e0f01c9c2 100644 --- a/findutils/grep.c +++ b/findutils/grep.c @@ -87,7 +87,11 @@ enum { struct globals { int max_matches; +#if !ENABLE_EXTRA_COMPAT int reflags; +#else + RE_TRANSLATE_TYPE case_fold; /* RE_TRANSLATE_TYPE is [[un]signed] char* */ +#endif smalluint invert_search; smalluint print_filename; smalluint open_errors; @@ -110,7 +114,19 @@ struct globals { }; \ } while (0) #define max_matches (G.max_matches ) +#if !ENABLE_EXTRA_COMPAT #define reflags (G.reflags ) +#else +#define case_fold (G.case_fold ) +/* http://www.delorie.com/gnu/docs/regex/regex_46.html */ +#define reflags re_syntax_options +#undef REG_NOSUB +#undef REG_EXTENDED +#undef REG_ICASE +#define REG_NOSUB bug:is:here /* should not be used */ +#define REG_EXTENDED RE_SYNTAX_EGREP +#define REG_ICASE bug:is:here /* should not be used */ +#endif #define invert_search (G.invert_search ) #define print_filename (G.print_filename ) #define open_errors (G.open_errors ) @@ -240,6 +256,7 @@ static int grep_file(FILE *file) xregcomp(&gl->compiled_regex, gl->pattern, reflags); #else memset(&gl->compiled_regex, 0, sizeof(gl->compiled_regex)); + gl->compiled_regex.translate = case_fold; /* for -i */ if (re_compile_pattern(gl->pattern, strlen(gl->pattern), &gl->compiled_regex)) bb_error_msg_and_die("bad regex '%s'", gl->pattern); #endif @@ -532,8 +549,10 @@ int grep_main(int argc, char **argv) if (ENABLE_FEATURE_GREP_FGREP_ALIAS && applet_name[0] == 'f') option_mask32 |= OPT_F; +#if !ENABLE_EXTRA_COMPAT if (!(option_mask32 & (OPT_o | OPT_w))) reflags = REG_NOSUB; +#endif if (ENABLE_FEATURE_GREP_EGREP_ALIAS && (applet_name[0] == 'e' || (option_mask32 & OPT_E)) @@ -541,8 +560,18 @@ int grep_main(int argc, char **argv) reflags |= REG_EXTENDED; } - if (option_mask32 & OPT_i) + if (option_mask32 & OPT_i) { +#if !ENABLE_EXTRA_COMPAT reflags |= REG_ICASE; +#else + int i; + case_fold = xmalloc(256); + for (i = 0; i < 256; i++) + case_fold[i] = (unsigned char)i; + for (i = 'a'; i <= 'z'; i++) + case_fold[i] = (unsigned char)(i - ('a' - 'A')); +#endif + } argv += optind; argc -= optind; |