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author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-05-30 07:20:28 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-05-30 07:20:28 +0000 |
commit | 79a85b18cc6ad27f1a70a703270680dc30a1263e (patch) | |
tree | 4fbfcaf67c80822fe2ea7b2de20a9c49304aa734 /ext/-test-/string | |
parent | bfc9c3766f3efd58002bd6e58074c16322abd852 (diff) | |
download | ruby-79a85b18cc6ad27f1a70a703270680dc30a1263e.tar.gz |
string.c: return reallocated pointer
* string.c (str_fill_term): return new pointer reallocated by
filling terminator.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55212 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ext/-test-/string')
-rw-r--r-- | ext/-test-/string/cstr.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/ext/-test-/string/cstr.c b/ext/-test-/string/cstr.c index 9bd33a344e..fc47d5206f 100644 --- a/ext/-test-/string/cstr.c +++ b/ext/-test-/string/cstr.c @@ -50,6 +50,28 @@ bug_str_cstr_term_char(VALUE str) } static VALUE +bug_str_unterminated_substring(VALUE str, VALUE vbeg, VALUE vlen) +{ + long beg = NUM2LONG(vbeg); + long len = NUM2LONG(vlen); + rb_str_modify(str); + if (len < 0) rb_raise(rb_eArgError, "negative length: %ld", len); + if (RSTRING_LEN(str) < beg) rb_raise(rb_eIndexError, "beg: %ld", beg); + if (RSTRING_LEN(str) < beg + len) rb_raise(rb_eIndexError, "end: %ld", beg + len); + str = rb_str_new_shared(str); + if (STR_EMBED_P(str)) { + RSTRING(str)->basic.flags &= ~RSTRING_EMBED_LEN_MASK; + RSTRING(str)->basic.flags |= len << RSTRING_EMBED_LEN_SHIFT; + memmove(RSTRING(str)->as.ary, RSTRING(str)->as.ary + beg, len); + } + else { + RSTRING(str)->as.heap.ptr += beg; + RSTRING(str)->as.heap.len = len; + } + return str; +} + +static VALUE bug_str_s_cstr_term(VALUE self, VALUE str) { Check_Type(str, T_STRING); @@ -114,6 +136,7 @@ Init_cstr(VALUE klass) rb_define_method(klass, "cstr_term", bug_str_cstr_term, 0); rb_define_method(klass, "cstr_unterm", bug_str_cstr_unterm, 1); rb_define_method(klass, "cstr_term_char", bug_str_cstr_term_char, 0); + rb_define_method(klass, "unterminated_substring", bug_str_unterminated_substring, 2); rb_define_singleton_method(klass, "cstr_term", bug_str_s_cstr_term, 1); rb_define_singleton_method(klass, "cstr_unterm", bug_str_s_cstr_unterm, 2); rb_define_singleton_method(klass, "cstr_term_char", bug_str_s_cstr_term_char, 1); |