1 #include <wchar.h> 2 3 static const unsigned char table[] = { 4 #include "nonspacing.h" 5 }; 6 7 static const unsigned char wtable[] = { 8 #include "wide.h" 9 }; 10 11 int wcwidth(wchar_t wc) 12 { 13 if (wc < 0xffU) 14 return (wc+1 & 0x7f) >= 0x21 ? 1 : wc ? -1 : 0; 15 if ((wc & 0xfffeffffU) < 0xfffe) { 16 if ((table[table[wc>>8]*32+((wc&255)>>3)]>>(wc&7))&1) 17 return 0; 18 if ((wtable[wtable[wc>>8]*32+((wc&255)>>3)]>>(wc&7))&1) 19 return 2; 20 return 1; 21 } 22 if ((wc & 0xfffe) == 0xfffe) 23 return -1; 24 if (wc-0x20000U < 0x20000) 25 return 2; 26 if (wc == 0xe0001 || wc-0xe0020U < 0x5f || wc-0xe0100 < 0xef) 27 return 0; 28 return 1; 29 } 30
