FreeCalypso > hg > sms-coding-utils
view libcoding/utf8_decode2.c @ 4:d88c5ab03447
libcoding/number_encode.c: import from fc-sim-tools/libutil
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 05 Aug 2023 03:17:09 +0000 |
parents | 2d0082216916 |
children | e56bb9f09ff1 |
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/* * This library module implements the function for converting UTF-8 input * to UCS-2 in outgoing SMS composition. */ #include <sys/types.h> utf8_to_ucs2(inbuf, outbuf, outmax, outlenp) u_char *inbuf; u_short *outbuf; unsigned outmax, *outlenp; { u_char *ip = inbuf; u_short *op = outbuf; unsigned outcnt = 0, c, n, uni; while (c = *ip++) { if (c < 0x80) { uni = c; goto gotuni; } if (c < 0xC0 || c > 0xEF) return(-1); uni = c & 0x1F; if (c >= 0xE0) n = 2; else n = 1; for (; n; n--) { c = *ip++; if (c < 0x80 || c > 0xBF) return(-1); uni <<= 6; uni |= c & 0x3F; } gotuni: if (outcnt >= outmax) return(-2); *op++ = uni; outcnt++; } *outlenp = outcnt; return(0); }