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comparison src/libvterm/src/utf8.h @ 11621:b8299e742f41 v8.0.0693

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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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11620:fb788b3997c1 11621:b8299e742f41
1 /* The following functions copied and adapted from libtermkey
2 *
3 * http://www.leonerd.org.uk/code/libtermkey/
4 */
5 unsigned int utf8_seqlen(long codepoint);
6
7 #if defined(DEFINE_INLINES) || USE_INLINE
8 INLINE unsigned int utf8_seqlen(long codepoint)
9 {
10 if(codepoint < 0x0000080) return 1;
11 if(codepoint < 0x0000800) return 2;
12 if(codepoint < 0x0010000) return 3;
13 if(codepoint < 0x0200000) return 4;
14 if(codepoint < 0x4000000) return 5;
15 return 6;
16 }
17 #endif
18
19 /* Does NOT NUL-terminate the buffer */
20 int fill_utf8(long codepoint, char *str);
21
22 #if defined(DEFINE_INLINES) || USE_INLINE
23 INLINE int fill_utf8(long codepoint, char *str)
24 {
25 int nbytes = utf8_seqlen(codepoint);
26
27 /* This is easier done backwards */
28 int b = nbytes;
29 while(b > 1) {
30 b--;
31 str[b] = 0x80 | (codepoint & 0x3f);
32 codepoint >>= 6;
33 }
34
35 switch(nbytes) {
36 case 1: str[0] = (codepoint & 0x7f); break;
37 case 2: str[0] = 0xc0 | (codepoint & 0x1f); break;
38 case 3: str[0] = 0xe0 | (codepoint & 0x0f); break;
39 case 4: str[0] = 0xf0 | (codepoint & 0x07); break;
40 case 5: str[0] = 0xf8 | (codepoint & 0x03); break;
41 case 6: str[0] = 0xfc | (codepoint & 0x01); break;
42 }
43
44 return nbytes;
45 }
46 #endif
47 /* end copy */