diff options
Diffstat (limited to 're.c')
| -rw-r--r-- | re.c | 1489 |
1 files changed, 0 insertions, 1489 deletions
@@ -1,1489 +0,0 @@ -/********************************************************************** - - re.c - - - $Author$ - created at: Mon Aug 9 18:24:49 JST 1993 - - Copyright (C) 1993-2001 Yukihiro Matsumoto - -**********************************************************************/ - -#include "ruby.h" -#include "re.h" -#include <ctype.h> - -static VALUE rb_eRegexpError; - -#define BEG(no) regs->beg[no] -#define END(no) regs->end[no] - -#if 'a' == 97 /* it's ascii */ -static const char casetable[] = { - '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007', - '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017', - '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027', - '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037', - /* ' ' '!' '"' '#' '$' '%' '&' ''' */ - '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047', - /* '(' ')' '*' '+' ',' '-' '.' '/' */ - '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057', - /* '0' '1' '2' '3' '4' '5' '6' '7' */ - '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067', - /* '8' '9' ':' ';' '<' '=' '>' '?' */ - '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077', - /* '@' 'A' 'B' 'C' 'D' 'E' 'F' 'G' */ - '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147', - /* 'H' 'I' 'J' 'K' 'L' 'M' 'N' 'O' */ - '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157', - /* 'P' 'Q' 'R' 'S' 'T' 'U' 'V' 'W' */ - '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167', - /* 'X' 'Y' 'Z' '[' '\' ']' '^' '_' */ - '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137', - /* '`' 'a' 'b' 'c' 'd' 'e' 'f' 'g' */ - '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147', - /* 'h' 'i' 'j' 'k' 'l' 'm' 'n' 'o' */ - '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157', - /* 'p' 'q' 'r' 's' 't' 'u' 'v' 'w' */ - '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167', - /* 'x' 'y' 'z' '{' '|' '}' '~' */ - '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177', - '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207', - '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217', - '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227', - '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237', - '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247', - '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257', - '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267', - '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277', - '\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307', - '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317', - '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327', - '\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337', - '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347', - '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357', - '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367', - '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377', -}; -#else ->>> "You lose. You will need a translation table for your character set." <<< -#endif - -#define MIN(a,b) (((a)>(b))?(b):(a)) - -int -rb_memcicmp(p1, p2, len) - char *p1, *p2; - long len; -{ - int tmp; - - while (len--) { - if (tmp = casetable[(unsigned)*p1++] - casetable[(unsigned)*p2++]) - return tmp; - } - return 0; -} - -int -rb_memcmp(p1, p2, len) - char *p1, *p2; - long len; -{ - int tmp; - - if (!ruby_ignorecase) { - return memcmp(p1, p2, len); - } - return rb_memcicmp(p1, p2, len); -} - -#define REG_CASESTATE FL_USER0 -#define KCODE_NONE 0 -#define KCODE_EUC FL_USER1 -#define KCODE_SJIS FL_USER2 -#define KCODE_UTF8 FL_USER3 -#define KCODE_FIXED FL_USER4 -#define KCODE_MASK (KCODE_EUC|KCODE_SJIS|KCODE_UTF8) - -static int reg_kcode = DEFAULT_KCODE; - -static void -kcode_euc(re) - struct RRegexp *re; -{ - FL_UNSET(re, KCODE_MASK); - FL_SET(re, KCODE_EUC); - FL_SET(re, KCODE_FIXED); -} - -static void -kcode_sjis(re) - struct RRegexp *re; -{ - FL_UNSET(re, KCODE_MASK); - FL_SET(re, KCODE_SJIS); - FL_SET(re, KCODE_FIXED); -} - -static void -kcode_utf8(re) - struct RRegexp *re; -{ - FL_UNSET(re, KCODE_MASK); - FL_SET(re, KCODE_UTF8); - FL_SET(re, KCODE_FIXED); -} - -static void -kcode_none(re) - struct RRegexp *re; -{ - FL_UNSET(re, KCODE_MASK); - FL_SET(re, KCODE_FIXED); -} - -static int curr_kcode; - -static void -kcode_set_option(re) - VALUE re; -{ - if (!FL_TEST(re, KCODE_FIXED)) return; - - curr_kcode = RBASIC(re)->flags & KCODE_MASK; - if (reg_kcode == curr_kcode) return; - switch (curr_kcode) { - case KCODE_NONE: - re_mbcinit(MBCTYPE_ASCII); - break; - case KCODE_EUC: - re_mbcinit(MBCTYPE_EUC); - break; - case KCODE_SJIS: - re_mbcinit(MBCTYPE_SJIS); - break; - case KCODE_UTF8: - re_mbcinit(MBCTYPE_UTF8); - break; - } -} - -static void -kcode_reset_option() -{ - if (reg_kcode == curr_kcode) return; - switch (reg_kcode) { - case KCODE_NONE: - re_mbcinit(MBCTYPE_ASCII); - break; - case KCODE_EUC: - re_mbcinit(MBCTYPE_EUC); - break; - case KCODE_SJIS: - re_mbcinit(MBCTYPE_SJIS); - break; - case KCODE_UTF8: - re_mbcinit(MBCTYPE_UTF8); - break; - } -} - -int -rb_reg_mbclen2(c, re) - unsigned int c; - VALUE re; -{ - int len; - - if (!FL_TEST(re, KCODE_FIXED)) - return mbclen(c); - kcode_set_option(re); - len = mbclen(c); - kcode_reset_option(); - return len; -} - -static void -rb_reg_check(re) - VALUE re; -{ - if (!RREGEXP(re)->ptr || !RREGEXP(re)->str) { - rb_raise(rb_eTypeError, "uninitialized Regexp"); - } -} - -extern int ruby_in_compile; - -static void -rb_reg_expr_str(str, s, len) - VALUE str; - const char *s; - int len; -{ - const char *p, *pend; - int need_escape = 0; - - p = s; pend = p + len; - while (p<pend) { - if (*p == '/' || (!ISPRINT(*p) && !ismbchar(*p))) { - need_escape = 1; - break; - } - p++; - } - if (!need_escape) { - rb_str_buf_cat(str, s, len); - } - else { - p = s; - while (p<pend) { - if (*p == '/') { - char c = '\\'; - rb_str_buf_cat(str, &c, 1); - rb_str_buf_cat(str, p, 1); - } - else if (ismbchar(*p)) { - rb_str_buf_cat(str, p, mbclen(*p)); - p += mbclen(*p); - continue; - } - else if (ISPRINT(*p)) { - rb_str_buf_cat(str, p, 1); - } - else { - char b[8]; - switch (*p) { - case '\r': - rb_str_buf_cat(str, "\\r", 2); - break; - case '\n': - rb_str_buf_cat(str, "\\n", 2); - break; - case '\t': - rb_str_buf_cat(str, "\\t", 2); - break; - case '\f': - rb_str_buf_cat(str, "\\f", 2); - break; - case 007: - rb_str_buf_cat(str, "\\a", 2); - break; - case 013: - rb_str_buf_cat(str, "\\v", 2); - break; - case 033: - rb_str_buf_cat(str, "\\e", 2); - break; - default: - sprintf(b, "\\%03o", *p & 0377); - rb_str_buf_cat(str, b, 4); - break; - } - } - p++; - } - } -} - -static VALUE -rb_reg_desc(s, len, re) - const char *s; - int len; - VALUE re; -{ - VALUE str = rb_str_buf_new2("/"); - - rb_reg_expr_str(str, s, len); - rb_str_buf_cat2(str, "/"); - if (re) { - rb_reg_check(re); - /* /p is obsolete; to be removed */ - if ((RREGEXP(re)->ptr->options & RE_OPTION_POSIXLINE) == RE_OPTION_POSIXLINE) - rb_str_buf_cat2(str, "p"); - else if (RREGEXP(re)->ptr->options & RE_OPTION_MULTILINE) - rb_str_buf_cat2(str, "m"); - if (RREGEXP(re)->ptr->options & RE_OPTION_IGNORECASE) - rb_str_buf_cat2(str, "i"); - if (RREGEXP(re)->ptr->options & RE_OPTION_EXTENDED) - rb_str_buf_cat2(str, "x"); - - if (FL_TEST(re, KCODE_FIXED)) { - switch ((RBASIC(re)->flags & KCODE_MASK)) { - case KCODE_NONE: - rb_str_buf_cat2(str, "n"); - break; - case KCODE_EUC: - rb_str_buf_cat2(str, "e"); - break; - case KCODE_SJIS: - rb_str_buf_cat2(str, "s"); - break; - case KCODE_UTF8: - rb_str_buf_cat2(str, "u"); - break; - } - } - } - OBJ_INFECT(str, re); - return str; -} - -static VALUE -rb_reg_source(re) - VALUE re; -{ - VALUE str; - - rb_reg_check(re); - str = rb_str_new(RREGEXP(re)->str,RREGEXP(re)->len); - if (OBJ_TAINTED(re)) OBJ_TAINT(str); - return str; -} - -static VALUE -rb_reg_inspect(re) - VALUE re; -{ - rb_reg_check(re); - return rb_reg_desc(RREGEXP(re)->str, RREGEXP(re)->len, re); -} - -static void -rb_reg_raise(s, len, err, re) - const char *s; - int len; - const char *err; - VALUE re; -{ - VALUE desc = rb_reg_desc(s, len, re); - - if (ruby_in_compile) - rb_compile_error("%s: %s", err, RSTRING(desc)->ptr); - else - rb_raise(rb_eRegexpError, "%s: %s", err, RSTRING(desc)->ptr); -} - -static VALUE -rb_reg_casefold_p(re) - VALUE re; -{ - rb_reg_check(re); - if (RREGEXP(re)->ptr->options & RE_OPTION_IGNORECASE) return Qtrue; - return Qfalse; -} - -static VALUE -rb_reg_options_m(re) - VALUE re; -{ - rb_reg_check(re); - return INT2NUM(RREGEXP(re)->ptr->options); -} - -static VALUE -rb_reg_kcode_m(re) - VALUE re; -{ - char *kcode; - - if (FL_TEST(re, KCODE_FIXED)) { - switch (RBASIC(re)->flags & KCODE_MASK) { - case KCODE_NONE: - kcode = "none"; break; - case KCODE_EUC: - kcode = "euc"; break; - case KCODE_SJIS: - kcode = "sjis"; break; - case KCODE_UTF8: - kcode = "utf8"; break; - default: - rb_bug("unknow kcode - should not happen"); - break; - } - return rb_str_new2(kcode); - } - return Qnil; -} - -static Regexp* -make_regexp(s, len, flags) - const char *s; - int len, flags; -{ - Regexp *rp; - char *err; - - /* Handle escaped characters first. */ - - /* Build a copy of the string (in dest) with the - escaped characters translated, and generate the regex - from that. - */ - - rp = ALLOC(Regexp); - MEMZERO((char *)rp, Regexp, 1); - rp->buffer = ALLOC_N(char, 16); - rp->allocated = 16; - rp->fastmap = ALLOC_N(char, 256); - if (flags) { - rp->options = flags; - } - err = re_compile_pattern(s, len, rp); - if (err != NULL) { - rb_reg_raise(s, len, err, 0); - } - - return rp; -} - -static VALUE rb_cMatch; - -static VALUE -match_alloc() -{ - NEWOBJ(match, struct RMatch); - OBJSETUP(match, rb_cMatch, T_MATCH); - - match->str = 0; - match->regs = 0; - match->regs = ALLOC(struct re_registers); - MEMZERO(match->regs, struct re_registers, 1); - - return (VALUE)match; -} - -static VALUE -match_clone(match) - VALUE match; -{ - NEWOBJ(clone, struct RMatch); - CLONESETUP(clone, match); - - clone->str = RMATCH(match)->str; - clone->regs = 0; - - clone->regs = ALLOC(struct re_registers); - clone->regs->allocated = 0; - re_copy_registers(clone->regs, RMATCH(match)->regs); - - return (VALUE)clone; -} - -static VALUE -match_size(match) - VALUE match; -{ - return INT2FIX(RMATCH(match)->regs->num_regs); -} - -static VALUE -match_offset(match, n) - VALUE match, n; -{ - int i = NUM2INT(n); - - if (i < 0 || RMATCH(match)->regs->num_regs <= i) - rb_raise(rb_eIndexError, "index %d out of matches", i); - - if (RMATCH(match)->regs->beg[i] < 0) - return rb_assoc_new(Qnil, Qnil); - - return rb_assoc_new(INT2FIX(RMATCH(match)->regs->beg[i]), - INT2FIX(RMATCH(match)->regs->end[i])); -} - -static VALUE -match_begin(match, n) - VALUE match, n; -{ - int i = NUM2INT(n); - - if (i < 0 || RMATCH(match)->regs->num_regs <= i) - rb_raise(rb_eIndexError, "index %d out of matches", i); - - if (RMATCH(match)->regs->beg[i] < 0) - return Qnil; - - return INT2FIX(RMATCH(match)->regs->beg[i]); -} - -static VALUE -match_end(match, n) - VALUE match, n; -{ - int i = NUM2INT(n); - - if (i < 0 || RMATCH(match)->regs->num_regs <= i) - rb_raise(rb_eIndexError, "index %d out of matches", i); - - if (RMATCH(match)->regs->beg[i] < 0) - return Qnil; - - return INT2FIX(RMATCH(match)->regs->end[i]); -} - -#define MATCH_BUSY FL_USER2 - -void -rb_match_busy(match) - VALUE match; -{ - FL_SET(match, MATCH_BUSY); -} - -int ruby_ignorecase; -static int may_need_recompile; - -static void -rb_reg_prepare_re(re) - VALUE re; -{ - int need_recompile = 0; - int state; - - rb_reg_check(re); - state = FL_TEST(re, REG_CASESTATE); - /* ignorecase status */ - if (ruby_ignorecase && !state) { - FL_SET(re, REG_CASESTATE); - RREGEXP(re)->ptr->options |= RE_OPTION_IGNORECASE; - need_recompile = 1; - } - if (!ruby_ignorecase && state) { - FL_UNSET(re, REG_CASESTATE); - RREGEXP(re)->ptr->options &= ~RE_OPTION_IGNORECASE; - need_recompile = 1; - } - - if (!FL_TEST(re, KCODE_FIXED) && - (RBASIC(re)->flags & KCODE_MASK) != reg_kcode) { - need_recompile = 1; - RBASIC(re)->flags &= ~KCODE_MASK; - RBASIC(re)->flags |= reg_kcode; - } - - if (need_recompile) { - char *err; - - if (FL_TEST(re, KCODE_FIXED)) - kcode_set_option(re); - rb_reg_check(re); - RREGEXP(re)->ptr->fastmap_accurate = 0; - err = re_compile_pattern(RREGEXP(re)->str, RREGEXP(re)->len, RREGEXP(re)->ptr); - if (err != NULL) { - rb_reg_raise(RREGEXP(re)->str, RREGEXP(re)->len, err, re); - } - } -} - -int -rb_reg_adjust_startpos(re, str, pos, reverse) - VALUE re, str; - int pos, reverse; -{ - int range; - - rb_reg_check(re); - if (may_need_recompile) rb_reg_prepare_re(re); - - if (FL_TEST(re, KCODE_FIXED)) - kcode_set_option(re); - else if (reg_kcode != curr_kcode) - kcode_reset_option(); - - if (reverse) { - range = -pos; - } - else { - range = RSTRING(str)->len - pos; - } - return re_adjust_startpos(RREGEXP(re)->ptr, - RSTRING(str)->ptr, RSTRING(str)->len, - pos, range); -} - -int -rb_reg_search(re, str, pos, reverse) - VALUE re, str; - int pos, reverse; -{ - int result; - VALUE match; - static struct re_registers regs; - int range; - - if (pos > RSTRING(str)->len || pos < 0) { - rb_backref_set(Qnil); - return -1; - } - - rb_reg_check(re); - if (may_need_recompile) rb_reg_prepare_re(re); - - if (FL_TEST(re, KCODE_FIXED)) - kcode_set_option(re); - else if (reg_kcode != curr_kcode) - kcode_reset_option(); - - if (reverse) { - range = -pos; - } - else { - range = RSTRING(str)->len - pos; - } - result = re_search(RREGEXP(re)->ptr,RSTRING(str)->ptr,RSTRING(str)->len, - pos, range, ®s); - - if (FL_TEST(re, KCODE_FIXED)) - kcode_reset_option(); - - if (result == -2) { - rb_reg_raise(RREGEXP(re)->str, RREGEXP(re)->len, - "Stack overflow in regexp matcher", re); - } - - if (result < 0) { - rb_backref_set(Qnil); - return result; - } - - match = rb_backref_get(); - if (NIL_P(match) || FL_TEST(match, MATCH_BUSY)) { - match = match_alloc(); - } - else { - if (rb_safe_level() >= 3) - OBJ_TAINT(match); - else - FL_UNSET(match, FL_TAINT); - } - - re_copy_registers(RMATCH(match)->regs, ®s); - RMATCH(match)->str = rb_str_new4(str); - rb_backref_set(match); - - OBJ_INFECT(match, re); - OBJ_INFECT(match, str); - return result; -} - -VALUE -rb_reg_nth_defined(nth, match) - int nth; - VALUE match; -{ - if (NIL_P(match)) return Qnil; - if (nth >= RMATCH(match)->regs->num_regs) { - return Qnil; - } - if (nth < 0) { - nth += RMATCH(match)->regs->num_regs; - if (nth <= 0) return Qnil; - } - if (RMATCH(match)->BEG(nth) == -1) return Qfalse; - return Qtrue; -} - -VALUE -rb_reg_nth_match(nth, match) - int nth; - VALUE match; -{ - VALUE str; - int start, end, len; - - if (NIL_P(match)) return Qnil; - if (nth >= RMATCH(match)->regs->num_regs) { - return Qnil; - } - if (nth < 0) { - nth += RMATCH(match)->regs->num_regs; - if (nth <= 0) return Qnil; - } - start = RMATCH(match)->BEG(nth); - if (start == -1) return Qnil; - end = RMATCH(match)->END(nth); - len = end - start; - str = rb_str_new(RSTRING(RMATCH(match)->str)->ptr + start, len); - if (OBJ_TAINTED(match)) OBJ_TAINT(str); - return str; -} - -VALUE -rb_reg_last_match(match) - VALUE match; -{ - return rb_reg_nth_match(0, match); -} - -VALUE -rb_reg_match_pre(match) - VALUE match; -{ - VALUE str; - - if (NIL_P(match)) return Qnil; - if (RMATCH(match)->BEG(0) == -1) return Qnil; - str = rb_str_new(RSTRING(RMATCH(match)->str)->ptr, RMATCH(match)->BEG(0)); - if (OBJ_TAINTED(match)) OBJ_TAINT(str); - return str; -} - -VALUE -rb_reg_match_post(match) - VALUE match; -{ - VALUE str; - - if (NIL_P(match)) return Qnil; - if (RMATCH(match)->BEG(0) == -1) return Qnil; - str = rb_str_new(RSTRING(RMATCH(match)->str)->ptr+RMATCH(match)->END(0), - RSTRING(RMATCH(match)->str)->len-RMATCH(match)->END(0)); - if (OBJ_TAINTED(match)) OBJ_TAINT(str); - return str; -} - -VALUE -rb_reg_match_last(match) - VALUE match; -{ - int i; - - if (NIL_P(match)) return Qnil; - if (RMATCH(match)->BEG(0) == -1) return Qnil; - - for (i=RMATCH(match)->regs->num_regs-1; RMATCH(match)->BEG(i) == -1 && i > 0; i--) - ; - if (i == 0) return Qnil; - return rb_reg_nth_match(i, match); -} - -static VALUE -last_match_getter() -{ - return rb_reg_last_match(rb_backref_get()); -} - -static VALUE -prematch_getter() -{ - return rb_reg_match_pre(rb_backref_get()); -} - -static VALUE -postmatch_getter() -{ - return rb_reg_match_post(rb_backref_get()); -} - -static VALUE -last_paren_match_getter() -{ - return rb_reg_match_last(rb_backref_get()); -} - -static VALUE -match_to_a(match) - VALUE match; -{ - struct re_registers *regs = RMATCH(match)->regs; - VALUE ary = rb_ary_new2(regs->num_regs); - char *ptr = RSTRING(RMATCH(match)->str)->ptr; - int i; - int taint = OBJ_TAINTED(match); - - for (i=0; i<regs->num_regs; i++) { - if (regs->beg[i] == -1) { - rb_ary_push(ary, Qnil); - } else { - VALUE str = rb_str_new(ptr+regs->beg[i], regs->end[i]-regs->beg[i]); - if (taint) OBJ_TAINT(str); - rb_ary_push(ary, str); - } - } - return ary; -} - -static VALUE -match_aref(argc, argv, match) - int argc; - VALUE *argv; - VALUE match; -{ - VALUE idx, rest; - - rb_scan_args(argc, argv, "11", &idx, &rest); - - if (!NIL_P(rest) || !FIXNUM_P(idx) || FIX2INT(idx) < 0) { - return rb_ary_aref(argc, argv, match_to_a(match)); - } - return rb_reg_nth_match(FIX2INT(idx), match); -} - -static VALUE -match_select(argc, argv, match) - int argc; - VALUE *argv; - VALUE match; -{ - struct re_registers *regs = RMATCH(match)->regs; - char *ptr = RSTRING(RMATCH(match)->str)->ptr; - VALUE result = rb_ary_new(); - int i; - long idx; - int taint = OBJ_TAINTED(match); - - for (i=0; i<argc; i++) { - idx = NUM2LONG(argv[i]); - if (idx < 0) idx += regs->num_regs; - if (idx < 0 || regs->num_regs <= idx) { - rb_ary_push(result, Qnil); - } - else { - VALUE str = rb_str_new(ptr+regs->beg[i], regs->end[i]-regs->beg[i]); - if (taint) OBJ_TAINT(str); - rb_ary_push(result, str); - } - } - return result; -} - -static VALUE -match_to_s(match) - VALUE match; -{ - VALUE str = rb_reg_last_match(match); - - if (NIL_P(str)) str = rb_str_new(0,0); - if (OBJ_TAINTED(match)) OBJ_TAINT(str); - if (OBJ_TAINTED(RMATCH(match)->str)) OBJ_TAINT(str); - return str; -} - -static VALUE -match_string(match) - VALUE match; -{ - return RMATCH(match)->str; /* str is frozen */ -} - -VALUE rb_cRegexp; - -static void -rb_reg_initialize(obj, s, len, options) - VALUE obj; - const char *s; - int len; - int options; /* CASEFOLD = 1 */ - /* EXTENDED = 2 */ - /* MULTILINE = 4 */ - /* CODE_NONE = 16 */ - /* CODE_EUC = 32 */ - /* CODE_SJIS = 48 */ - /* CODE_UTF8 = 64 */ -{ - struct RRegexp *re = RREGEXP(obj); - - if (re->ptr) re_free_pattern(re->ptr); - if (re->str) free(re->str); - re->ptr = 0; - re->str = 0; - - switch (options & ~0xf) { - case 0: - default: - FL_SET(re, reg_kcode); - break; - case 16: - kcode_none(re); - break; - case 32: - kcode_euc(re); - break; - case 48: - kcode_sjis(re); - break; - case 64: - kcode_utf8(re); - break; - } - - if (options & ~0xf) { - kcode_set_option((VALUE)re); - } - if (ruby_ignorecase) { - options |= RE_OPTION_IGNORECASE; - FL_SET(re, REG_CASESTATE); - } - re->ptr = make_regexp(s, len, options & 0xf); - re->str = ALLOC_N(char, len+1); - memcpy(re->str, s, len); - re->str[len] = '\0'; - re->len = len; - if (options & ~0xf) { - kcode_reset_option(); - } -} - -static VALUE -rb_reg_s_alloc(klass) - VALUE klass; -{ - NEWOBJ(re, struct RRegexp); - OBJSETUP(re, klass, T_REGEXP); - - re->ptr = 0; - re->len = 0; - re->str = 0; - - return (VALUE)re; -} - -VALUE -rb_reg_new(s, len, options) - const char *s; - long len; - int options; -{ - VALUE re = rb_reg_s_alloc(rb_cRegexp); - - rb_reg_initialize(re, s, len, options); - return (VALUE)re; -} - -static int case_cache; -static int kcode_cache; -static VALUE reg_cache; - -VALUE -rb_reg_regcomp(str) - VALUE str; -{ - if (reg_cache && RREGEXP(reg_cache)->len == RSTRING(str)->len - && case_cache == ruby_ignorecase - && kcode_cache == reg_kcode - && memcmp(RREGEXP(reg_cache)->str, RSTRING(str)->ptr, RSTRING(str)->len) == 0) - return reg_cache; - - case_cache = ruby_ignorecase; - kcode_cache = reg_kcode; - return reg_cache = rb_reg_new(RSTRING(str)->ptr, RSTRING(str)->len, - ruby_ignorecase); -} - -static int -rb_reg_cur_kcode(re) - VALUE re; -{ - if (FL_TEST(re, KCODE_FIXED)) { - return RBASIC(re)->flags & KCODE_MASK; - } - return 0; -} - -static VALUE -rb_reg_equal(re1, re2) - VALUE re1, re2; -{ - if (re1 == re2) return Qtrue; - if (TYPE(re2) != T_REGEXP) return Qfalse; - rb_reg_check(re1); rb_reg_check(re2); - if (RREGEXP(re1)->len != RREGEXP(re2)->len) return Qfalse; - if (memcmp(RREGEXP(re1)->str, RREGEXP(re2)->str, RREGEXP(re1)->len) == 0 && - rb_reg_cur_kcode(re1) == rb_reg_cur_kcode(re2) && - RREGEXP(re1)->ptr->options == RREGEXP(re2)->ptr->options) { - return Qtrue; - } - return Qfalse; -} - -VALUE -rb_reg_match(re, str) - VALUE re, str; -{ - int start; - - if (NIL_P(str)) { - rb_backref_set(Qnil); - return Qnil; - } - StringValue(str); - start = rb_reg_search(re, str, 0, 0); - if (start < 0) { - return Qnil; - } - return INT2FIX(start); -} - -VALUE -rb_reg_match2(re) - VALUE re; -{ - int start; - VALUE line = rb_lastline_get(); - - if (TYPE(line) != T_STRING) { - rb_backref_set(Qnil); - return Qnil; - } - - start = rb_reg_search(re, line, 0, 0); - if (start < 0) { - return Qnil; - } - return INT2FIX(start); -} - -static VALUE -rb_reg_match_m(re, str) - VALUE re, str; -{ - VALUE result = rb_reg_match(re, str); - - if (NIL_P(result)) return Qnil; - result = rb_backref_get(); - rb_match_busy(result); - return result; -} - -static VALUE -rb_reg_initialize_m(argc, argv, self) - int argc; - VALUE *argv; - VALUE self; -{ - VALUE src; - int flags = 0; - - if (argc == 0 || argc > 3) { - rb_raise(rb_eArgError, "wrong number of argument"); - } - if (argc >= 2) { - if (FIXNUM_P(argv[1])) flags = FIX2INT(argv[1]); - else if (RTEST(argv[1])) flags = RE_OPTION_IGNORECASE; - } - if (argc == 3) { - char *kcode = StringValuePtr(argv[2]); - - switch (kcode[0]) { - case 'n': case 'N': - flags |= 16; - break; - case 'e': case 'E': - flags |= 32; - break; - case 's': case 'S': - flags |= 48; - break; - case 'u': case 'U': - flags |= 64; - break; - default: - break; - } - } - - src = argv[0]; - if (TYPE(src) == T_REGEXP) { - rb_reg_check(src); - rb_reg_initialize(self, RREGEXP(src)->str, RREGEXP(src)->len, flags); - } - else { - StringValue(src); - rb_reg_initialize(self, RSTRING(src)->ptr, RSTRING(src)->len, flags); - } - return self; -} - -static VALUE -rb_reg_s_quote(argc, argv) - int argc; - VALUE *argv; -{ - VALUE str, kcode; - int kcode_saved = reg_kcode; - char *s, *send, *t; - VALUE tmp; - - rb_scan_args(argc, argv, "11", &str, &kcode); - if (!NIL_P(kcode)) { - rb_set_kcode(StringValuePtr(kcode)); - curr_kcode = reg_kcode; - reg_kcode = kcode_saved; - } - StringValue(str); - s = RSTRING(str)->ptr; - send = s + RSTRING(str)->len; - tmp = rb_str_new(0, RSTRING(str)->len*2); - t = RSTRING(tmp)->ptr; - - for (; s < send; s++) { - if (ismbchar(*s)) { - int n = mbclen(*s); - - while (n-- && s < send) - *t++ = *s++; - s--; - continue; - } - if (*s == '[' || *s == ']' - || *s == '{' || *s == '}' - || *s == '(' || *s == ')' - || *s == '|' || *s == '-' - || *s == '*' || *s == '.' || *s == '\\' - || *s == '?' || *s == '+' - || *s == '^' || *s == '$') { - *t++ = '\\'; - } - *t++ = *s; - } - kcode_reset_option(); - rb_str_resize(tmp, t - RSTRING(tmp)->ptr); - OBJ_INFECT(tmp, str); - return tmp; -} - -int -rb_kcode() -{ - switch (reg_kcode) { - case KCODE_EUC: - return MBCTYPE_EUC; - case KCODE_SJIS: - return MBCTYPE_SJIS; - case KCODE_UTF8: - return MBCTYPE_UTF8; - case KCODE_NONE: - return MBCTYPE_ASCII; - } - rb_bug("wrong reg_kcode value (0x%x)", reg_kcode); -} - -static int -rb_reg_get_kcode(re) - VALUE re; -{ - switch (RBASIC(re)->flags & KCODE_MASK) { - case KCODE_NONE: - return 16; - case KCODE_EUC: - return 32; - case KCODE_SJIS: - return 48; - case KCODE_UTF8: - return 64; - default: - return 0; - } -} - -int -rb_reg_options(re) - VALUE re; -{ - int options = 0; - - rb_reg_check(re); - if (RREGEXP(re)->ptr->options & RE_OPTION_IGNORECASE) - options |= RE_OPTION_IGNORECASE; - if ((RREGEXP(re)->ptr->options & RE_OPTION_POSIXLINE) == RE_OPTION_POSIXLINE) - options |= RE_OPTION_POSIXLINE; - else if (RREGEXP(re)->ptr->options & RE_OPTION_MULTILINE) - options |= RE_OPTION_MULTILINE; - if (RREGEXP(re)->ptr->options & RE_OPTION_EXTENDED) - options |= RE_OPTION_EXTENDED; - if (FL_TEST(re, KCODE_FIXED)) { - options |= rb_reg_get_kcode(re); - } - return options; -} - -static VALUE -rb_reg_clone(re) - VALUE re; -{ - VALUE clone = rb_obj_clone(re); - - RREGEXP(clone)->ptr = 0; - RREGEXP(clone)->len = 0; - RREGEXP(clone)->str = 0; - rb_reg_check(re); - rb_reg_initialize(clone, RREGEXP(re)->str, RREGEXP(re)->len, - rb_reg_options(re)); - return clone; -} - -VALUE -rb_reg_regsub(str, src, regs) - VALUE str, src; - struct re_registers *regs; -{ - VALUE val = 0; - char *p, *s, *e, c; - int no; - - p = s = RSTRING(str)->ptr; - e = s + RSTRING(str)->len; - - while (s < e) { - char *ss = s; - - c = *s++; - if (ismbchar(c)) { - s += mbclen(c) - 1; - continue; - } - if (c != '\\' || s == e) continue; - - if (!val) { - val = rb_str_buf_new(ss-p); - rb_str_buf_cat(val, p, ss-p); - } - else { - rb_str_buf_cat(val, p, ss-p); - } - - c = *s++; - p = s; - switch (c) { - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': - no = c - '0'; - break; - case '&': - no = 0; - break; - - case '`': - rb_str_buf_cat(val, RSTRING(src)->ptr, BEG(0)); - continue; - - case '\'': - rb_str_buf_cat(val, RSTRING(src)->ptr+END(0), RSTRING(src)->len-END(0)); - continue; - - case '+': - no = regs->num_regs-1; - while (BEG(no) == -1 && no > 0) no--; - if (no == 0) continue; - break; - - case '\\': - rb_str_buf_cat(val, s-1, 1); - continue; - - default: - rb_str_buf_cat(val, s-2, 2); - continue; - } - - if (no >= 0) { - if (no >= regs->num_regs) continue; - if (BEG(no) == -1) continue; - rb_str_buf_cat(val, RSTRING(src)->ptr+BEG(no), END(no)-BEG(no)); - } - } - - if (p < e) { - if (!val) { - val = rb_str_buf_new(e-p); - rb_str_buf_cat(val, p, e-p); - } - else { - rb_str_buf_cat(val, p, e-p); - } - } - if (!val) return str; - - return val; -} - -const char* -rb_get_kcode() -{ - switch (reg_kcode) { - case KCODE_SJIS: - return "SJIS"; - case KCODE_EUC: - return "EUC"; - case KCODE_UTF8: - return "UTF8"; - default: - return "NONE"; - } -} - -static VALUE -kcode_getter() -{ - return rb_str_new2(rb_get_kcode()); -} - -void -rb_set_kcode(code) - const char *code; -{ - if (code == 0) goto set_no_conversion; - - switch (code[0]) { - case 'E': - case 'e': - reg_kcode = KCODE_EUC; - re_mbcinit(MBCTYPE_EUC); - break; - case 'S': - case 's': - reg_kcode = KCODE_SJIS; - re_mbcinit(MBCTYPE_SJIS); - break; - case 'U': - case 'u': - reg_kcode = KCODE_UTF8; - re_mbcinit(MBCTYPE_UTF8); - break; - default: - case 'N': - case 'n': - case 'A': - case 'a': - set_no_conversion: - reg_kcode = KCODE_NONE; - re_mbcinit(MBCTYPE_ASCII); - break; - } -} - -static void -kcode_setter(val) - VALUE val; -{ - may_need_recompile = 1; - rb_set_kcode(StringValuePtr(val)); -} - -static VALUE -ignorecase_getter() -{ - return ruby_ignorecase?Qtrue:Qfalse; -} - -static void -ignorecase_setter(val, id) - VALUE val; - ID id; -{ - rb_warn("modifying %s is deperecated", rb_id2name(id)); - may_need_recompile = 1; - ruby_ignorecase = RTEST(val); -} - -static VALUE -match_getter() -{ - VALUE match = rb_backref_get(); - - if (NIL_P(match)) return Qnil; - rb_match_busy(match); - return match; -} - -static void -match_setter(val) - VALUE val; -{ - Check_Type(val, T_MATCH); - rb_backref_set(val); -} - -static VALUE -rb_reg_s_last_match(argc, argv) - int argc; - VALUE *argv; -{ - VALUE nth; - - if (rb_scan_args(argc, argv, "01", &nth) == 1) { - return rb_reg_nth_match(NUM2INT(nth), rb_backref_get()); - } - return match_getter(); -} - -void -Init_Regexp() -{ - rb_eRegexpError = rb_define_class("RegexpError", rb_eStandardError); - - re_set_casetable(casetable); -#if DEFAULT_KCODE == KCODE_EUC - re_mbcinit(MBCTYPE_EUC); -#else -#if DEFAULT_KCODE == KCODE_SJIS - re_mbcinit(MBCTYPE_SJIS); -#else -#if DEFAULT_KCODE == KCODE_UTF8 - re_mbcinit(MBCTYPE_UTF8); -#else - re_mbcinit(MBCTYPE_ASCII); -#endif -#endif -#endif - - rb_define_virtual_variable("$~", match_getter, match_setter); - rb_define_virtual_variable("$&", last_match_getter, 0); - rb_define_virtual_variable("$`", prematch_getter, 0); - rb_define_virtual_variable("$'", postmatch_getter, 0); - rb_define_virtual_variable("$+", last_paren_match_getter, 0); - - rb_define_virtual_variable("$=", ignorecase_getter, ignorecase_setter); - rb_define_virtual_variable("$KCODE", kcode_getter, kcode_setter); - rb_define_virtual_variable("$-K", kcode_getter, kcode_setter); - - rb_cRegexp = rb_define_class("Regexp", rb_cObject); - rb_define_singleton_method(rb_cRegexp, "allocate", rb_reg_s_alloc, 0); - rb_define_singleton_method(rb_cRegexp, "compile", rb_class_new_instance, -1); - rb_define_singleton_method(rb_cRegexp, "quote", rb_reg_s_quote, -1); - rb_define_singleton_method(rb_cRegexp, "escape", rb_reg_s_quote, -1); - rb_define_singleton_method(rb_cRegexp, "last_match", rb_reg_s_last_match, -1); - - rb_define_method(rb_cRegexp, "initialize", rb_reg_initialize_m, -1); - rb_define_method(rb_cRegexp, "clone", rb_reg_clone, 0); - rb_define_method(rb_cRegexp, "==", rb_reg_equal, 1); - rb_define_method(rb_cRegexp, "=~", rb_reg_match, 1); - rb_define_method(rb_cRegexp, "===", rb_reg_match, 1); - rb_define_method(rb_cRegexp, "~", rb_reg_match2, 0); - rb_define_method(rb_cRegexp, "match", rb_reg_match_m, 1); - rb_define_method(rb_cRegexp, "to_s", rb_reg_inspect, 0); - rb_define_method(rb_cRegexp, "inspect", rb_reg_inspect, 0); - rb_define_method(rb_cRegexp, "source", rb_reg_source, 0); - rb_define_method(rb_cRegexp, "casefold?", rb_reg_casefold_p, 0); - rb_define_method(rb_cRegexp, "options", rb_reg_options_m, 0); - rb_define_method(rb_cRegexp, "kcode", rb_reg_kcode_m, 0); - - rb_define_const(rb_cRegexp, "IGNORECASE", INT2FIX(RE_OPTION_IGNORECASE)); - rb_define_const(rb_cRegexp, "EXTENDED", INT2FIX(RE_OPTION_EXTENDED)); - rb_define_const(rb_cRegexp, "MULTILINE", INT2FIX(RE_OPTION_MULTILINE)); - - rb_global_variable(®_cache); - - rb_cMatch = rb_define_class("MatchData", rb_cObject); - rb_define_global_const("MatchingData", rb_cMatch); - rb_undef_method(CLASS_OF(rb_cMatch), "allocate"); - rb_undef_method(CLASS_OF(rb_cMatch), "new"); - - rb_define_method(rb_cMatch, "clone", match_clone, 0); - rb_define_method(rb_cMatch, "size", match_size, 0); - rb_define_method(rb_cMatch, "length", match_size, 0); - rb_define_method(rb_cMatch, "offset", match_offset, 1); - rb_define_method(rb_cMatch, "begin", match_begin, 1); - rb_define_method(rb_cMatch, "end", match_end, 1); - rb_define_method(rb_cMatch, "to_a", match_to_a, 0); - rb_define_method(rb_cMatch, "to_ary", match_to_a, 0); - rb_define_method(rb_cMatch, "[]", match_aref, -1); - rb_define_method(rb_cMatch, "select", match_select, -1); - rb_define_method(rb_cMatch, "pre_match", rb_reg_match_pre, 0); - rb_define_method(rb_cMatch, "post_match", rb_reg_match_post, 0); - rb_define_method(rb_cMatch, "to_s", match_to_s, 0); - rb_define_method(rb_cMatch, "inspect", rb_any_to_s, 0); - rb_define_method(rb_cMatch, "string", match_string, 0); -} |