static VALUE rb_lzfx_compress(VALUE self, VALUE input) {
unsigned char *compressed, *data;
int out_length, data_length;
int retcode;
VALUE retval;
Check_Type(input, T_STRING);
data = StringValuePtr(input);
data_length = RSTRING_LEN(input);
if (data_length < 1) {
return Qnil;
}
out_length = data_length * COFFICIENT_OF_BUFFER;
compressed = malloc(out_length);
retcode = lzfx_compress(data, data_length, compressed, &out_length);
if(retcode < 0) {
ruby_xfree(compressed);
return Qnil;
}
retval = rb_str_new(compressed, out_length);
ruby_xfree(compressed);
return retval;
}
int
lz_fx_compress(void *src, uint64_t srclen, void *dst, uint64_t *dstlen,
int level, uchar_t chdr, int btype, void *data)
{
int rv;
struct lzfx_params *lzdat = (struct lzfx_params *)data;
unsigned int _srclen = srclen;
unsigned int _dstlen = *dstlen;
/*
* Ignore compressed data in fast modes.
*/
if (level < 7 && PC_TYPE(btype) == TYPE_COMPRESSED)
return (-1);
rv = lzfx_compress(src, _srclen, dst, &_dstlen, lzdat->htab_bits);
if (rv != 0) {
if (rv != LZFX_ESIZE)
lz_fx_err(rv);
return (-1);
}
*dstlen = _dstlen;
return (0);
}
/// This is the entry-point function for the executable
int APIENTRY _tWinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow)
{
char ibuf[16], obuf[16];
// Call lzfx function, which does nothing useful other than to
// prove whether any function can be called.
int n = lzfx_compress((void*)(*ibuf), 0, (void*)(*obuf), 0);
// If we successfully return from the lzfx function, then exit
// with a distinctive code that the caller can recognize. If the caller sees
// this code, then it indicates that there was no missing dependency error.
ExitProcess(23445);
}
int
lz_fx_compress(void *src, uint64_t srclen, void *dst, uint64_t *dstlen,
int level, uchar_t chdr, void *data)
{
int rv;
struct lzfx_params *lzdat = (struct lzfx_params *)data;
unsigned int _srclen = srclen;
unsigned int _dstlen = *dstlen;
rv = lzfx_compress(src, _srclen, dst, &_dstlen, lzdat->htab_bits);
if (rv != 0) {
if (rv != LZFX_ESIZE)
lz_fx_err(rv);
return (-1);
}
*dstlen = _dstlen;
return (0);
}