Mercurial > vim
diff src/libvterm/src/utf8.h @ 11621:b8299e742f41 v8.0.0693
patch 8.0.0693: no terminal emulator support
commit https://github.com/vim/vim/commit/e4f25e4a8db2c8a8a71a4ba2a68540b3ab341e42
Author: Bram Moolenaar <Bram@vim.org>
Date: Fri Jul 7 11:54:15 2017 +0200
patch 8.0.0693: no terminal emulator support
Problem: No terminal emulator support. Cannot properly run commands in the
GUI. Cannot run a job interactively with an ssh connection.
Solution: Very early implementation of the :terminal command. Includes
libvterm converted to ANSI C. Many parts still missing.
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Fri, 07 Jul 2017 12:00:04 +0200 |
| parents | |
| children | 2449b6ce1456 |
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new file mode 100644 --- /dev/null +++ b/src/libvterm/src/utf8.h @@ -0,0 +1,47 @@ +/* The following functions copied and adapted from libtermkey + * + * http://www.leonerd.org.uk/code/libtermkey/ + */ +unsigned int utf8_seqlen(long codepoint); + +#if defined(DEFINE_INLINES) || USE_INLINE +INLINE unsigned int utf8_seqlen(long codepoint) +{ + if(codepoint < 0x0000080) return 1; + if(codepoint < 0x0000800) return 2; + if(codepoint < 0x0010000) return 3; + if(codepoint < 0x0200000) return 4; + if(codepoint < 0x4000000) return 5; + return 6; +} +#endif + +/* Does NOT NUL-terminate the buffer */ +int fill_utf8(long codepoint, char *str); + +#if defined(DEFINE_INLINES) || USE_INLINE +INLINE int fill_utf8(long codepoint, char *str) +{ + int nbytes = utf8_seqlen(codepoint); + + /* This is easier done backwards */ + int b = nbytes; + while(b > 1) { + b--; + str[b] = 0x80 | (codepoint & 0x3f); + codepoint >>= 6; + } + + switch(nbytes) { + case 1: str[0] = (codepoint & 0x7f); break; + case 2: str[0] = 0xc0 | (codepoint & 0x1f); break; + case 3: str[0] = 0xe0 | (codepoint & 0x0f); break; + case 4: str[0] = 0xf0 | (codepoint & 0x07); break; + case 5: str[0] = 0xf8 | (codepoint & 0x03); break; + case 6: str[0] = 0xfc | (codepoint & 0x01); break; + } + + return nbytes; +} +#endif +/* end copy */