FreeCalypso > hg > freecalypso-tools

annotate uptools/libcoding/ucs2_decode.c @ 1012:11391cb6bdc0

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patch from fixeria: doc change from SE K2x0 to K2xx Since their discovery in late 2022, Sony Ericsson K200 and K220 phones were collectively referred to as SE K2x0 in FreeCalypso documentation. However, now that SE K205 has been discovered as yet another member of the same family (same PCBA in different case), it makes more sense to refer to the whole family as SE K2xx.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 23 Sep 2024 12:23:20 +0000
parents 30fbaa652ea5
children
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1 /*
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2 * This library module implements the conversion of UCS2-encoded data
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3 * (typically received in SMS) into ASCII, ISO 8859-1 or UTF-8,
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4 * maintaining parallelism with the corresponding function for decoding
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5 * GSM7-encoded data.
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6 */
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7
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8 #include <sys/types.h>
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9 #include <stdio.h>
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10
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11 ucs2_to_ascii_or_ext(inbuf, inlen, outbuf, outlenp, ascii_ext, newline_ok)
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12 u_char *inbuf, *outbuf;
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13 unsigned inlen, *outlenp;
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14 {
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15 u_char *inp, *endp, *outp;
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16 unsigned uni;
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17
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18 inp = inbuf;
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19 endp = inbuf + (inlen & ~1);
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20 outp = outbuf;
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21 while (inp < endp) {
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22 if ((endp - inp) >= 4 && (inp[0] & 0xFC) == 0xD8 &&
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23 (inp[2] & 0xFC) == 0xDC) {
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24 uni = ((inp[0] & 3) << 18) | (inp[1] << 10) |
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25 ((inp[2] & 3) << 8) | inp[3];
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26 inp += 4;
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27 uni += 0x10000;
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28 if (ascii_ext == 2)
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29 outp += emit_utf8_char(uni, outp);
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30 else {
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31 sprintf(outp, "\\U%06X", uni);
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32 outp += 8;
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33 }
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34 continue;
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35 }
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36 uni = (inp[0] << 8) | inp[1];
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37 inp += 2;
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38 if (uni == '\\') {
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39 *outp++ = '\\';
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40 *outp++ = '\\';
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41 } else if (uni == '\r') {
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42 *outp++ = '\\';
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43 *outp++ = 'r';
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44 } else if (uni == '\n') {
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45 if (newline_ok)
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46 *outp++ = '\n';
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47 else {
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48 *outp++ = '\\';
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49 *outp++ = 'n';
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50 }
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51 } else if (!is_decoded_char_ok(uni, ascii_ext)) {
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52 sprintf(outp, "\\u%04X", uni);
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53 outp += 6;
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54 } else if (ascii_ext == 2)
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55 outp += emit_utf8_char(uni, outp);
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56 else
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57 *outp++ = uni;
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58 }
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59 *outp = '\0';
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60 if (outlenp)
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61 *outlenp = outp - outbuf;
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62 }