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1 #include <wchar.h> | 1 #include <wchar.h> |
2 | 2 |
3 static const unsigned char table[] = { | 3 static const unsigned char table[] = { |
4 #include "nonspacing.h" | 4 #include "nonspacing.h" |
5 }; | 5 }; |
6 | 6 |
7 static const unsigned char wtable[] = { | 7 static const unsigned char wtable[] = { |
8 #include "wide.h" | 8 #include "wide.h" |
9 }; | 9 }; |
10 | 10 |
11 int wcwidth(wchar_t wc) | 11 int wcwidth(wchar_t wc) { |
12 { | 12 if (wc < 0xffU) |
13 » if (wc < 0xffU) | 13 return (wc + 1 & 0x7f) >= 0x21 ? 1 : wc ? -1 : 0; |
14 » » return (wc+1 & 0x7f) >= 0x21 ? 1 : wc ? -1 : 0; | 14 if ((wc & 0xfffeffffU) < 0xfffe) { |
15 » if ((wc & 0xfffeffffU) < 0xfffe) { | 15 if ((table[table[wc >> 8] * 32 + ((wc & 255) >> 3)] >> (wc & 7)) & 1) |
16 » » if ((table[table[wc>>8]*32+((wc&255)>>3)]>>(wc&7))&1) | 16 return 0; |
17 » » » return 0; | 17 if ((wtable[wtable[wc >> 8] * 32 + ((wc & 255) >> 3)] >> (wc & 7)) & 1) |
18 » » if ((wtable[wtable[wc>>8]*32+((wc&255)>>3)]>>(wc&7))&1) | 18 return 2; |
19 » » » return 2; | 19 return 1; |
20 » » return 1; | 20 } |
21 » } | 21 if ((wc & 0xfffe) == 0xfffe) |
22 » if ((wc & 0xfffe) == 0xfffe) | 22 return -1; |
23 » » return -1; | 23 if (wc - 0x20000U < 0x20000) |
24 » if (wc-0x20000U < 0x20000) | 24 return 2; |
25 » » return 2; | 25 if (wc == 0xe0001 || wc - 0xe0020U < 0x5f || wc - 0xe0100 < 0xef) |
26 » if (wc == 0xe0001 || wc-0xe0020U < 0x5f || wc-0xe0100 < 0xef) | 26 return 0; |
27 » » return 0; | 27 return 1; |
28 » return 1; | |
29 } | 28 } |
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