FreeCalypso > hg > freecalypso-tools
view uptools/libcoding/gsm7_decode.c @ 594:2c75cf810146
fc-fsio: cleandir command implemented
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Tue, 04 Feb 2020 05:09:13 +0000 |
parents | 978571e23318 |
children | 1c599681fd60 |
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/* * This library module implements the decoding of GSM7-encoded data * into ASCII, ISO 8859-1 or UTF-8. */ #include <sys/types.h> extern u_short gsm7_decode_table[128]; extern u_short gsm7ext_decode_table[128]; gsm7_to_ascii_or_ext(inbuf, inlen, outbuf, outlenp, ascii_ext, newline_ok, errp) u_char *inbuf, *outbuf; unsigned inlen, *outlenp, *errp; { u_char *inp, *endp, *outp; unsigned errcnt = 0; unsigned gsm, uni; inp = inbuf; endp = inbuf + inlen; outp = outbuf; while (inp < endp) { gsm = *inp++; if (gsm == 0x1B && inp < endp) uni = gsm7ext_decode_table[*inp++]; else uni = gsm7_decode_table[gsm]; if (uni == '\r') { *outp++ = '\\'; *outp++ = 'r'; errcnt++; } else if (uni == '\n') { if (newline_ok) *outp++ = '\n'; else { *outp++ = '\\'; *outp++ = 'n'; errcnt++; } } else if (!uni || !is_decoded_char_ok(uni, ascii_ext)) { *outp++ = '?'; errcnt++; } else if (ascii_ext == 2) outp += emit_utf8_char(uni, outp); else *outp++ = uni; } *outp = '\0'; if (outlenp) *outlenp = outp - outbuf; if (errp) *errp = errcnt; }