FreeCalypso > hg > freecalypso-tools

annotate uptools/libcoding/gsm7_decode.c @ 964:a96cb97b66a2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
ringtools/imy: fix duplicate definition of tdma_durations[] The bug was reported by Vadim Yanitskiy <fixeria@osmocom.org>, although the present fix is slightly different from the contributed patch: because main.c doesn't need this tdma_durations[] array at all, let's simply remove the reference to this array from main.c rather than turn it into an extern. I no longer remember my original thought flow that resulted (by mistake) in tdma_durations[] being multiply defined in main.c and durations.c. My intent might have been to define all globals in main.c and have the reference in durations.c be an extern - and I missed that extern - but without clear memory, I have no certainty. In any case, having this data array defined in the same module that fills it (durations.c) is sensible, so let's make it the new way.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 31 Aug 2023 19:38:18 +0000
parents 30fbaa652ea5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
328
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This library module implements the decoding of GSM7-encoded data
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * into ASCII, ISO 8859-1 or UTF-8.
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 */
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 #include <sys/types.h>
802
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
7 #include <stdio.h>
328
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 extern u_short gsm7_decode_table[128];
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 extern u_short gsm7ext_decode_table[128];
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11
804
30fbaa652ea5 pcm-sms-decode & sms-pdu-decode: rm remains of bad chars count
Mychaela Falconia <falcon@freecalypso.org>
parents: 803
diff changeset
12 gsm7_to_ascii_or_ext(inbuf, inlen, outbuf, outlenp, ascii_ext, newline_ok)
328
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 u_char *inbuf, *outbuf;
804
30fbaa652ea5 pcm-sms-decode & sms-pdu-decode: rm remains of bad chars count
Mychaela Falconia <falcon@freecalypso.org>
parents: 803
diff changeset
14 unsigned inlen, *outlenp;
328
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 {
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 u_char *inp, *endp, *outp;
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 unsigned gsm, uni;
802
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
18 int is_ext;
328
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 inp = inbuf;
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 endp = inbuf + inlen;
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 outp = outbuf;
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 while (inp < endp) {
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 gsm = *inp++;
802
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
25 if (gsm == 0x1B && inp < endp && *inp != 0x1B && *inp != '\n'
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
26 && *inp != '\r') {
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
27 gsm = *inp++;
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
28 uni = gsm7ext_decode_table[gsm];
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
29 if (uni == '\\') {
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
30 *outp++ = '\\';
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
31 *outp++ = '\\';
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
32 continue;
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
33 }
803
5637794913a8 pcm-sms-decode & sms-pdu-decode: decode \E for Euro symbol
Mychaela Falconia <falcon@freecalypso.org>
parents: 802
diff changeset
34 if (uni == 0x20AC && ascii_ext < 2) {
5637794913a8 pcm-sms-decode & sms-pdu-decode: decode \E for Euro symbol
Mychaela Falconia <falcon@freecalypso.org>
parents: 802
diff changeset
35 *outp++ = '\\';
5637794913a8 pcm-sms-decode & sms-pdu-decode: decode \E for Euro symbol
Mychaela Falconia <falcon@freecalypso.org>
parents: 802
diff changeset
36 *outp++ = 'E';
5637794913a8 pcm-sms-decode & sms-pdu-decode: decode \E for Euro symbol
Mychaela Falconia <falcon@freecalypso.org>
parents: 802
diff changeset
37 continue;
5637794913a8 pcm-sms-decode & sms-pdu-decode: decode \E for Euro symbol
Mychaela Falconia <falcon@freecalypso.org>
parents: 802
diff changeset
38 }
802
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
39 is_ext = 1;
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
40 } else {
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
41 switch (gsm) {
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
42 case 0x1B:
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
43 *outp++ = '\\';
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
44 *outp++ = 'e';
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
45 continue;
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
46 case '\n':
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
47 if (newline_ok)
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
48 *outp++ = '\n';
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
49 else {
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
50 *outp++ = '\\';
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
51 *outp++ = 'n';
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
52 }
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
53 continue;
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
54 case '\r':
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
55 *outp++ = '\\';
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
56 *outp++ = 'r';
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
57 continue;
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
58 }
328
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 uni = gsm7_decode_table[gsm];
802
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
60 is_ext = 0;
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
61 }
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
62 if (!uni || !is_decoded_char_ok(uni, ascii_ext)) {
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
63 if (is_ext) {
328
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 *outp++ = '\\';
802
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
65 *outp++ = 'e';
328
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 }
802
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
67 sprintf(outp, "\\%02X", gsm);
1c599681fd60 pcm-sms-decode & sms-pdu-decode: revamp bad char decoding
Mychaela Falconia <falcon@freecalypso.org>
parents: 328
diff changeset
68 outp += 3;
328
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 } else if (ascii_ext == 2)
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 outp += emit_utf8_char(uni, outp);
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 else
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 *outp++ = uni;
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 }
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 *outp = '\0';
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 if (outlenp)
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 *outlenp = outp - outbuf;
978571e23318 uptools started with libcoding
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 }