Class: Zstd::StreamingDecompress
- Inherits:
-
Object
- Object
- Zstd::StreamingDecompress
- Defined in:
- ext/zstdruby/streaming_decompress.c
Instance Method Summary collapse
- #decompress(src) ⇒ Object
- #initialize(*args) ⇒ Object constructor
Constructor Details
#initialize(*args) ⇒ Object
70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 |
# File 'ext/zstdruby/streaming_decompress.c', line 70
static VALUE
rb_streaming_decompress_initialize(int argc, VALUE *argv, VALUE obj)
{
VALUE kwargs;
rb_scan_args(argc, argv, "00:", &kwargs);
struct streaming_decompress_t* sd;
TypedData_Get_Struct(obj, struct streaming_decompress_t, &streaming_decompress_type, sd);
size_t const buffOutSize = ZSTD_DStreamOutSize();
ZSTD_DCtx* dctx = ZSTD_createDCtx();
if (dctx == NULL) {
rb_raise(rb_eRuntimeError, "%s", "ZSTD_createDCtx error");
}
set_decompress_params(dctx, kwargs);
sd->dctx = dctx;
sd->buf = rb_str_new(NULL, buffOutSize);
sd->buf_size = buffOutSize;
return obj;
}
|
Instance Method Details
#decompress(src) ⇒ Object
93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 |
# File 'ext/zstdruby/streaming_decompress.c', line 93
static VALUE
rb_streaming_decompress_decompress(VALUE obj, VALUE src)
{
StringValue(src);
const char* input_data = RSTRING_PTR(src);
size_t input_size = RSTRING_LEN(src);
ZSTD_inBuffer input = { input_data, input_size, 0 };
struct streaming_decompress_t* sd;
TypedData_Get_Struct(obj, struct streaming_decompress_t, &streaming_decompress_type, sd);
const char* output_data = RSTRING_PTR(sd->buf);
VALUE result = rb_str_new(0, 0);
while (input.pos < input.size) {
ZSTD_outBuffer output = { (void*)output_data, sd->buf_size, 0 };
size_t const ret = zstd_stream_decompress(sd->dctx, &output, &input, false);
if (ZSTD_isError(ret)) {
rb_raise(rb_eRuntimeError, "decompress error error code: %s", ZSTD_getErrorName(ret));
}
rb_str_cat(result, output.dst, output.pos);
}
return result;
}
|