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comparison libutil/gsm7_decode.c @ 68:c5e7c9e1d857

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GSM7 to qstring decoding: rework in a new way, emit \E for Euro
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 25 Mar 2021 00:04:08 +0000
parents 34bbb0585cab
children
comparison
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67:1b905e730abd 68:c5e7c9e1d857
1 /* 1 /*
2 * This module contains functions for decoding GSM7 strings 2 * This module implements a function for decoding GSM7 strings
3 * that exist in various SIM files. 3 * to ASCII with output to a stdio file; it is an implementation
4 * of lossless conversion per our SIM-data-formats spec
5 * in freecalypso-docs.
4 */ 6 */
5 7
6 #include <sys/types.h> 8 #include <sys/types.h>
7 #include <stdio.h> 9 #include <stdio.h>
8 10
9 static char gsm7_decode_table[128] = { 11 static char basic_table[128] = {
10 '@', 0, '$', 0, 0, 0, 0, 0, 12 '@', 0, '$', 0, 0, 0, 0, 0,
11 0, 0, '\n', 0, 0, '\r', 0, 0, 13 0, 0, 'n'|0x80, 0, 0, 'r'|0x80, 0, 0,
12 0, '_', 0, 0, 0, 0, 0, 0, 14 0, '_', 0, 0, 0, 0, 0, 0,
13 0, 0, 0, 0, 0, 0, 0, 0, 15 0, 0, 0, 0, 0, 0, 0, 0,
14 ' ', '!', '"', '#', 0, '%', '&', 0x27, 16 ' ', '!', '"'|0x80, '#', 0, '%', '&', 0x27,
15 '(', ')', '*', '+', ',', '-', '.', '/', 17 '(', ')', '*', '+', ',', '-', '.', '/',
16 '0', '1', '2', '3', '4', '5', '6', '7', 18 '0', '1', '2', '3', '4', '5', '6', '7',
17 '8', '9', ':', ';', '<', '=', '>', '?', 19 '8', '9', ':', ';', '<', '=', '>', '?',
18 0, 'A', 'B', 'C', 'D', 'E', 'F', 'G', 20 0, 'A', 'B', 'C', 'D', 'E', 'F', 'G',
19 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 21 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
20 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 22 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
21 'X', 'Y', 'Z', 0, 0, 0, 0, 0, 23 'X', 'Y', 'Z', 0, 0, 0, 0, 0,
22 0, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 24 0, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
23 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 25 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
24 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 26 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
25 'x', 'y', 'z', 0, 0, 0, 0, 0 27 'x', 'y', 'z', 0, 0, 0, 0, 0
26 }; 28 };
27 29
28 static char gsm7ext_decode_table[128] = { 30 static char escape_table[128] = {
29 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 31 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
30 0, 0, 0, 0, '^', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32 0, 0, 0, 0, '^', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
31 0, 0, 0, 0, 0, 0, 0, 0, '{', '}', 0, 0, 0, 0, 0, '\\', 33 0, 0, 0, 0, 0, 0, 0, 0, '{', '}', 0, 0, 0, 0, 0, '\\'|0x80,
32 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, '[', '~', ']', 0, 34 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, '[', '~', ']', 0,
33 '|', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 35 '|', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
34 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 36 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
35 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 37 0, 0, 0, 0, 0,'E'|0x80,0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
36 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 38 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
37 }; 39 };
38 40
39 void 41 void
40 print_gsm7_string_to_file(data, nbytes, outf) 42 print_gsm7_string_to_file(data, nbytes, outf)
41 u_char *data; 43 u_char *data;
56 putc('\\', outf); 58 putc('\\', outf);
57 putc('e', outf); 59 putc('e', outf);
58 continue; 60 continue;
59 } 61 }
60 b = *dp++; 62 b = *dp++;
61 c = gsm7ext_decode_table[b]; 63 c = escape_table[b];
62 if (!c) { 64 if (!c) {
63 fprintf(outf, "\\e\\%02X", b); 65 fprintf(outf, "\\e\\%02X", b);
64 continue; 66 continue;
65 } 67 }
66 } else { 68 } else {
67 c = gsm7_decode_table[b]; 69 c = basic_table[b];
68 if (!c) { 70 if (!c) {
69 fprintf(outf, "\\%02X", b); 71 fprintf(outf, "\\%02X", b);
70 continue; 72 continue;
71 } 73 }
72 } 74 }
73 if (c == '\n') { 75 if (c & 0x80) {
74 putc('\\', outf); 76 putc('\\', outf);
75 putc('n', outf); 77 c &= 0x7F;
76 continue;
77 } 78 }
78 if (c == '\r') {
79 putc('\\', outf);
80 putc('r', outf);
81 continue;
82 }
83 if (c == '"' || c == '\\')
84 putc('\\', outf);
85 putc(c, outf); 79 putc(c, outf);
86 } 80 }
87 putc('"', outf); 81 putc('"', outf);
88 } 82 }