| /* demo_utf8towc() against libc mbrtowc() |
| * |
| * Copyright 2017 Rob Landley <rob@landley.net> |
| |
| USE_DEMO_UTF8TOWC(NEWTOY(demo_utf8towc, 0, TOYFLAG_USR|TOYFLAG_BIN)) |
| |
| config DEMO_UTF8TOWC |
| bool "demo_utf8towc" |
| default n |
| help |
| usage: demo_utf8towc |
| |
| Print differences between toybox's utf8 conversion routines vs libc du jour. |
| */ |
| |
| #include "toys.h" |
| |
| void demo_utf8towc_main(void) |
| { |
| mbstate_t mb; |
| int len1, len2; |
| unsigned u, h, wc2; |
| wchar_t wc1; |
| |
| memset(&mb, 0, sizeof(mb)); |
| for (u = 1; u<=0x10ffff; u++) { |
| char *str = (void *)&h; |
| |
| wc1 = wc2 = 0; |
| len2 = 4; |
| h = htonl(u); |
| while (!*str) str++, len2--; |
| |
| len1 = mbrtowc(&wc1, str, len2, &mb); |
| if (len1<0) memset(&mb, 0, sizeof(mb)); |
| len2 = utf8towc(&wc2, str, len2); |
| if (len1 != len2 || wc1 != wc2) |
| printf("%x %d %x %d %x\n", u, len1, wc1, len2, wc2); |
| } |
| } |