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* string.c (rb_str_sub_bang): should preserve replacement points
since they may be altered in the yielded block. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17466 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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@ -1,3 +1,8 @@
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Fri Jun 20 11:57:46 2008 Yukihiro Matsumoto <matz@ruby-lang.org>
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* string.c (rb_str_sub_bang): should preserve replacement points
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since they may be altered in the yielded block.
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Fri Jun 20 11:07:56 2008 Tanaka Akira <akr@fsij.org>
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* string.c (rb_memhash): randomize hash to avoid algorithmic
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20
string.c
20
string.c
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@ -3121,6 +3121,8 @@ rb_str_sub_bang(int argc, VALUE *argv, VALUE str)
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int cr = ENC_CODERANGE(str);
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VALUE match = rb_backref_get();
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struct re_registers *regs = RMATCH_REGS(match);
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long beg0 = BEG(0);
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long end0 = END(0);
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if (iter || !NIL_P(hash)) {
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char *p = RSTRING_PTR(str); long len = RSTRING_LEN(str);
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@ -3129,7 +3131,7 @@ rb_str_sub_bang(int argc, VALUE *argv, VALUE str)
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repl = rb_obj_as_string(rb_yield(rb_reg_nth_match(0, match)));
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}
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else {
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repl = rb_hash_aref(hash, rb_str_subseq(str, BEG(0), END(0) - BEG(0)));
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repl = rb_hash_aref(hash, rb_str_subseq(str, beg0, end0 - beg0));
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repl = rb_obj_as_string(repl);
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}
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str_mod_check(str, p, len);
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@ -3141,9 +3143,9 @@ rb_str_sub_bang(int argc, VALUE *argv, VALUE str)
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enc = rb_enc_compatible(str, repl);
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if (!enc) {
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rb_encoding *str_enc = STR_ENC_GET(str);
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if (coderange_scan(RSTRING_PTR(str), BEG(0), str_enc) != ENC_CODERANGE_7BIT ||
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coderange_scan(RSTRING_PTR(str)+END(0),
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RSTRING_LEN(str)-END(0), str_enc) != ENC_CODERANGE_7BIT) {
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if (coderange_scan(RSTRING_PTR(str), beg0, str_enc) != ENC_CODERANGE_7BIT ||
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coderange_scan(RSTRING_PTR(str)+end0,
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RSTRING_LEN(str)-end0, str_enc) != ENC_CODERANGE_7BIT) {
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rb_raise(rb_eArgError, "character encodings differ: %s and %s",
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rb_enc_name(str_enc),
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rb_enc_name(STR_ENC_GET(repl)));
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@ -3157,16 +3159,16 @@ rb_str_sub_bang(int argc, VALUE *argv, VALUE str)
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int cr2 = ENC_CODERANGE(repl);
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if (cr2 == ENC_CODERANGE_UNKNOWN || cr2 > cr) cr = cr2;
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}
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plen = END(0) - BEG(0);
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plen = end0 - beg0;
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if (RSTRING_LEN(repl) > plen) {
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RESIZE_CAPA(str, RSTRING_LEN(str) + RSTRING_LEN(repl) - plen);
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}
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if (RSTRING_LEN(repl) != plen) {
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memmove(RSTRING_PTR(str) + BEG(0) + RSTRING_LEN(repl),
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RSTRING_PTR(str) + BEG(0) + plen,
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RSTRING_LEN(str) - BEG(0) - plen);
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memmove(RSTRING_PTR(str) + beg0 + RSTRING_LEN(repl),
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RSTRING_PTR(str) + beg0 + plen,
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RSTRING_LEN(str) - beg0 - plen);
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}
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memcpy(RSTRING_PTR(str) + BEG(0),
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memcpy(RSTRING_PTR(str) + beg0,
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RSTRING_PTR(repl), RSTRING_LEN(repl));
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STR_SET_LEN(str, RSTRING_LEN(str) + RSTRING_LEN(repl) - plen);
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RSTRING_PTR(str)[RSTRING_LEN(str)] = '\0';
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