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annotate uptools/libcoding/utf8_decode.c @ 416:30f6d1c32c6f

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doc/Flash-boot-defect article removed (no longer relevant) This article is no longer relevant because the issue in question only affected one (1) defective FCDEV3B board which was not and never will be sold.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 26 Oct 2018 07:11:08 +0000
parents ec0d6d58e043
children
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ec0d6d58e043 uptools/libcoding: UTF-8 input conversion to 8859-1 implemented
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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2 * This library module implements a function that converts text input
ec0d6d58e043 uptools/libcoding: UTF-8 input conversion to 8859-1 implemented
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3 * from UTF-8 to ISO 8859-1, rejecting any input Unicode characters
ec0d6d58e043 uptools/libcoding: UTF-8 input conversion to 8859-1 implemented
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4 * that aren't in the 8859-1 range. The conversion in done in place.
ec0d6d58e043 uptools/libcoding: UTF-8 input conversion to 8859-1 implemented
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5 */
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6
ec0d6d58e043 uptools/libcoding: UTF-8 input conversion to 8859-1 implemented
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7 #include <sys/types.h>
ec0d6d58e043 uptools/libcoding: UTF-8 input conversion to 8859-1 implemented
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8
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9 utf8_to_latin1(buf)
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10 u_char *buf;
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11 {
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12 u_char *ip = buf, *op = buf;
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13 int c, c2;
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14
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15 while (c = *ip++) {
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16 if (c < 0x80) {
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17 *op++ = c;
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18 continue;
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19 }
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20 if (c != 0xC2 && c != 0xC3)
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21 return(-1);
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22 c2 = *ip++;
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23 if (c2 < 0x80 || c2 > 0xBF)
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24 return(-1);
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25 *op++ = ((c & 3) << 6) | (c2 & 0x3F);
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26 }
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27 *op = '\0';
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28 return(0);
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29 }