xenia/kakoune
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

utf8: add dump(OutputIterator& it, Codepoint cp)

Browse Source
This commit is contained in:
Maxime Coste 2012-10-09 14:29:37 +02:00
parent c7272e427d
commit 1af7465107
1 changed files with 32 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
src/utf8.hh
View File

@ -1,6 +1,9 @@
#ifndef utf8_hh_INCLUDED #ifndef utf8_hh_INCLUDED
#define utf8_hh_INCLUDED #define utf8_hh_INCLUDED
#include <cstdint>
#include <cstddef>
namespace Kakoune namespace Kakoune
{ {
@ -109,6 +112,35 @@ Codepoint codepoint(Iterator it)
throw invalid_utf8_sequence{}; throw invalid_utf8_sequence{};
} }
struct invalid_codepoint{};
template<typename OutputIterator>
void dump(OutputIterator& it, Codepoint cp)
{
if (cp <= 0x7F)
*it++ = cp;
else if (cp <= 0x7FF)
{
*it++ = 0xC0 | (cp >> 6);
*it++ = 0x80 | (cp & 0x3F);
}
else if (cp <= 0xFFFF)
{
*it++ = 0xE0 | (cp >> 12);
*it++ = 0x80 | ((cp >> 6) & 0x3F);
*it++ = 0x80 | (cp & 0x3F);
}
else if (cp <= 0x10FFFF)
{
*it++ = 0xF0 | (cp >> 18);
*it++ = 0x80 | ((cp >> 12) & 0x3F);
*it++ = 0x80 | ((cp >> 6) & 0x3F);
*it++ = 0x80 | (cp & 0x3F);
}
else
throw invalid_codepoint{};
}
} }
} }