FreeCalypso > hg > fc-pcsc-tools
diff libcommon/gsm7_decode.c @ 21:d4dc86195382
GSM7 quoted string output factored out, uses new escapes
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 12 Feb 2021 04:16:35 +0000 |
parents | libcommon/alpha_decode.c@f7145c77b7fb |
children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libcommon/gsm7_decode.c Fri Feb 12 04:16:35 2021 +0000 @@ -0,0 +1,88 @@ +/* + * This module contains functions for decoding GSM7 strings + * that exist in various SIM files. + */ + +#include <sys/types.h> +#include <stdio.h> + +static char gsm7_decode_table[128] = { + '@', 0, '$', 0, 0, 0, 0, 0, + 0, 0, '\n', 0, 0, '\r', 0, 0, + 0, '_', 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + ' ', '!', '"', '#', 0, '%', '&', 0x27, + '(', ')', '*', '+', ',', '-', '.', '/', + '0', '1', '2', '3', '4', '5', '6', '7', + '8', '9', ':', ';', '<', '=', '>', '?', + 0, 'A', 'B', 'C', 'D', 'E', 'F', 'G', + 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', + 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', + 'X', 'Y', 'Z', 0, 0, 0, 0, 0, + 0, 'a', 'b', 'c', 'd', 'e', 'f', 'g', + 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', + 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', + 'x', 'y', 'z', 0, 0, 0, 0, 0 +}; + +static char gsm7ext_decode_table[128] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, '^', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, '{', '}', 0, 0, 0, 0, 0, '\\', + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, '[', '~', ']', 0, + '|', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 +}; + +void +print_gsm7_string_to_file(data, nbytes, outf) + u_char *data; + unsigned nbytes; + FILE *outf; +{ + u_char *dp, *endp; + int b, c; + + dp = data; + endp = data + nbytes; + putc('"', outf); + while (dp < endp) { + b = *dp++; + if (b == 0x1B) { + if (dp >= endp || *dp == 0x1B || *dp == '\n' || + *dp == '\r') { + putc('\\', outf); + putc('e', outf); + continue; + } + b = *dp++; + c = gsm7ext_decode_table[b]; + if (!c) { + fprintf(outf, "\\e\\%02X", b); + continue; + } + } else { + c = gsm7_decode_table[b]; + if (!c) { + fprintf(outf, "\\%02X", b); + continue; + } + } + if (c == '\n') { + putc('\\', outf); + putc('n', outf); + continue; + } + if (c == '\r') { + putc('\\', outf); + putc('r', outf); + continue; + } + if (c == '"' || c == '\\') + putc('\\', outf); + putc(c, outf); + } + putc('"', outf); +}