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* enc/trans/utf_16_32.erb.c (fun_so_from_utf_32le): implemented.

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(fun_so_to_utf_32le): implemented.
  [ruby-dev:35777]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@18447 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2008-08-08 16:08:50 +00:00
parent fbe9c1026d
commit 6db9e77e64
2 changed files with 50 additions and 1 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
Sat Aug 9 01:07:51 2008 Tanaka Akira <akr@fsij.org>
* enc/trans/utf_16_32.erb.c (fun_so_from_utf_32le): implemented.
(fun_so_to_utf_32le): implemented.
[ruby-dev:35777]
Sat Aug 9 00:42:33 2008 Tanaka Akira <akr@fsij.org>
* transcode_data.h (rb_transcoder): from_unit_length field added.

45
enc/trans/utf_16_32.erb.c
View file

@ -170,12 +170,55 @@ fun_so_to_utf_32be(rb_transcoding* t, const unsigned char* s, size_t l, unsigned
static int
fun_so_from_utf_32le(rb_transcoding* t, const unsigned char* s, size_t l, unsigned char* o)
{
return 1;
if (!s[2]) {
if (s[1]==0 && s[0]<0x80) {
o[0] = s[0];
return 1;
}
else if (s[1]<0x08) {
o[0] = 0xC0 | (s[1]<<2) | (s[0]>>6);
o[1] = 0x80 | (s[0]&0x3F);
return 2;
}
else {
o[0] = 0xE0 | (s[1]>>4);
o[1] = 0x80 | ((s[1]&0x0F)<<2) | (s[0]>>6);
o[2] = 0x80 | (s[0]&0x3F);
return 3;
}
}
else {
o[0] = 0xF0 | (s[2]>>2);
o[1] = 0x80 | ((s[2]&0x03)<<4) | (s[1]>>4);
o[2] = 0x80 | ((s[1]&0x0F)<<2) | (s[0]>>6);
o[3] = 0x80 | (s[0]&0x3F);
return 4;
}
}
static int
fun_so_to_utf_32le(rb_transcoding* t, const unsigned char* s, size_t l, unsigned char* o)
{
o[3] = 0;
if (!(s[0]&0x80)) {
o[2] = o[1] = 0x00;
o[0] = s[0];
}
else if ((s[0]&0xE0)==0xC0) {
o[2] = 0x00;
o[1] = (s[0]>>2)&0x07;
o[0] = ((s[0]&0x03)<<6) | (s[1]&0x3F);
}
else if ((s[0]&0xF0)==0xE0) {
o[2] = 0x00;
o[1] = (s[0]<<4) | ((s[1]>>2)^0x20);
o[0] = (s[1]<<6) | (s[2]^0x80);
}
else {
o[2] = ((s[0]&0x07)<<2) | ((s[1]>>4)&0x03);
o[1] = ((s[1]&0x0F)<<4) | ((s[2]>>2)&0x0F);
o[0] = ((s[2]&0x03)<<6) | (s[3]&0x3F);
}
return 4;
}