FreeCalypso > hg > freecalypso-tools
view uptools/libcoding/gsm7_encode.c @ 992:c4c400c1b10c
fc-loadtool flash: no flash2 ppb-erase-all
All PPBs from across the entire flash chip can only be erased together
as a unit, spanning across both banks on 16 MiB chips - therefore,
we shall disallow 'flash2 ppb-erase-all', and accept 'flash ppb-erase-all'
only.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 03 Dec 2023 04:47:31 +0000 |
parents | ec7e23d5151f |
children |
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/* * This library module implements the function for encoding from ISO 8859-1 * into the GSM 7-bit default alphabet (03.38 or 23.038). */ #include <sys/types.h> #include <ctype.h> extern u_char gsm7_encode_table[256]; static unsigned handle_escape(ipp) u_char **ipp; { unsigned c; c = *(*ipp)++; if (c >= '0' && c <= '7' && isxdigit(**ipp)) { c = ((c - '0') << 4) | decode_hex_digit(*(*ipp)++); return c; } switch (c) { case 'n': return '\n'; case 'r': return '\r'; case 'e': return 0x1B; case 'E': /* Euro currency symbol */ return 0xE5; case '"': case '\\': c = gsm7_encode_table[c]; return c; default: return 0xFF; } } latin1_to_gsm7(inbuf, outbuf, outmax, outlenp, allow_escape) u_char *inbuf, *outbuf; unsigned outmax, *outlenp; { u_char *ip = inbuf, *op = outbuf; unsigned outcnt = 0, c, n; while (c = *ip++) { if (c == '\\' && allow_escape) { c = handle_escape(&ip); if (c == 0xFF) return(-3); } else { c = gsm7_encode_table[c]; if (c == 0xFF) return(-1); } if (c & 0x80) n = 2; else n = 1; if (outcnt + n > outmax) return(-2); if (c & 0x80) { *op++ = 0x1B; *op++ = c & 0x7F; } else *op++ = c; outcnt += n; } *outlenp = outcnt; return(0); }