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- /* 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);
- }
- }
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