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* string.c (coderange_scan): optimize ASCII-8BIT string.

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(rb_enc_str_buf_cat): don't call coderange_scan if possible.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14915 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2008-01-06 16:38:04 +00:00
parent 35f28e6b81
commit b2168c5a2a
2 changed files with 31 additions and 5 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Mon Jan 7 01:36:49 2008 Tanaka Akira <akr@fsij.org>
* string.c (coderange_scan): optimize ASCII-8BIT string.
(rb_enc_str_buf_cat): don't call coderange_scan if possible.
Mon Jan 7 01:05:45 2008 Tanaka Akira <akr@fsij.org>
* lib/erb.rb (ERB::Revision): cut off locale dependent string in Date

31
string.c
View file

@ -119,6 +119,17 @@ coderange_scan(const char *p, long len, rb_encoding *enc)
const char *e = p + len;
int cr;
if (rb_enc_to_index(enc) == 0) {
/* enc is ASCII-8BIT. ASCII-8BIT string never be broken. */
while (p < e) {
if (!ISASCII((unsigned char)*p)) {
return ENC_CODERANGE_VALID;
}
p++;
}
return ENC_CODERANGE_7BIT;
}
cr = rb_enc_asciicompat(enc) ? ENC_CODERANGE_7BIT : ENC_CODERANGE_VALID;
while (p < e) {
int ret = rb_enc_precise_mbclen(p, e, enc);
@ -1056,12 +1067,22 @@ rb_enc_str_buf_cat(VALUE str, const char *ptr, long len, rb_encoding *ptr_enc)
int ptr_a8 = rb_enc_to_index(ptr_enc) == 0;
str_cr = ENC_CODERANGE(str);
ptr_cr = coderange_scan(ptr, len, ptr_enc);
if (str_cr == ENC_CODERANGE_UNKNOWN) {
if (str_a8 ? !ptr_a8
: (str_enc != ptr_enc && ptr_cr != ENC_CODERANGE_7BIT)) {
str_cr = rb_enc_str_coderange(str);
if (str_enc == ptr_enc) {
if (str_cr == ENC_CODERANGE_UNKNOWN ||
(ptr_a8 && str_cr != ENC_CODERANGE_7BIT)) {
ptr_cr = ENC_CODERANGE_UNKNOWN;
}
else {
ptr_cr = coderange_scan(ptr, len, ptr_enc);
}
}
else {
ptr_cr = coderange_scan(ptr, len, ptr_enc);
if (str_cr == ENC_CODERANGE_UNKNOWN) {
if (str_a8 || ptr_cr != ENC_CODERANGE_7BIT) {
str_cr = rb_enc_str_coderange(str);
}
}
}