1 /* demo_utf8towc() against libc mbrtowc() 2 * 3 * Copyright 2017 Rob Landley <rob (at) landley.net> 4 5 USE_DEMO_UTF8TOWC(NEWTOY(demo_utf8towc, 0, TOYFLAG_USR|TOYFLAG_BIN)) 6 7 config DEMO_UTF8TOWC 8 bool "demo_utf8towc" 9 default n 10 help 11 usage: demo_utf8towc 12 13 Print differences between toybox's utf8 conversion routines vs libc du jour. 14 */ 15 16 #include "toys.h" 17 18 void demo_utf8towc_main(void) 19 { 20 mbstate_t mb; 21 int len1, len2; 22 unsigned u, h; 23 wchar_t wc1, wc2; 24 25 setlocale(LC_ALL, "en_US.UTF-8"); 26 27 memset(&mb, 0, sizeof(mb)); 28 for (u=1; u; u++) { 29 char *str = (void *)&h; 30 31 wc1 = wc2 = 0; 32 len2 = 4; 33 h = htonl(u); 34 while (!*str) str++, len2--; 35 36 len1 = mbrtowc(&wc1, str, len2, &mb); 37 if (len1<0) memset(&mb, 0, sizeof(mb)); 38 len2 = utf8towc(&wc2, str, len2); 39 if (len1 != len2 || wc1 != wc2) 40 printf("%x %d %x %d %x\n", u, len1, wc1, len2, wc2); 41 } 42 } 43
