FreeCalypso > hg > fc-sim-tools
view libutil/hexread.c @ 53:fbedb67d234f
serial: fix parity for inverse coding convention
Important note: it is my (Mother Mychaela's) understanding that
SIM cards with inverse coding convention are extremely rare,
and I have never seen such a card. Therefore, our support for
the inverse coding convention will likely remain forever untested.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 21 Mar 2021 20:46:09 +0000 |
parents | 34bbb0585cab |
children |
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/* * This module contains the function for reading hex files, * to be used in the implementation of manual write commands. */ #include <sys/types.h> #include <ctype.h> #include <stdio.h> #include <stdlib.h> extern FILE *open_script_input_file(); read_hex_data_file(filename, databuf, maxlen) char *filename; u_char *databuf; unsigned maxlen; { FILE *inf; unsigned count; int c, c2; inf = open_script_input_file(filename); if (!inf) { perror(filename); return(-1); } for (count = 0; ; ) { do c = getc(inf); while (isspace(c)); if (c < 0) break; if (c == '#') { do c = getc(inf); while (c >= 0 && c != '\n'); continue; } if (!isxdigit(c)) { inv_input: fprintf(stderr, "%s: invalid hex file input\n", filename); fclose(inf); return(-1); } c2 = getc(inf); if (!isxdigit(c2)) goto inv_input; if (count >= maxlen) { fprintf(stderr, "%s: hex input data is too long\n", filename); fclose(inf); return(-1); } databuf[count++] = (decode_hex_digit(c) << 4) | decode_hex_digit(c2); } fclose(inf); if (!count) { fprintf(stderr, "%s: no hex data input found\n", filename); return(-1); } return(count); }