FreeCalypso > hg > fc-pcsc-tools

annotate libutil/gsm7_pack.c @ 226:0f96b5136541

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
sws-email2db program written
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 10 Mar 2021 20:34:03 +0000
parents 50bdc48e7487
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
213
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This library module implements the function for packing septets into octets.
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 */
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 #include <sys/types.h>
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 gsm7_pack(inbuf, outbuf, noctets)
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 u_char *inbuf, *outbuf;
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 unsigned noctets;
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 {
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 u_char *ip = inbuf, *op = outbuf;
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 unsigned n, c;
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 for (n = 0; n < noctets; n++) {
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 c = n % 7;
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 *op++ = ((ip[1] << 7) | ip[0]) >> c;
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 if (c == 6)
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 ip += 2;
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 else
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 ip += 1;
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 }
50bdc48e7487 libutil: gsm7_pack.c brought over from FC uptools
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 }