Class: Zstd::StreamingDecompress
- Inherits:
-
Object
- Object
- Zstd::StreamingDecompress
- Defined in:
- ext/zstdruby/streaming_decompress.c
Instance Method Summary collapse
Constructor Details
#initialize ⇒ Object
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# File 'ext/zstdruby/streaming_decompress.c', line 50
static VALUE
rb_streaming_decompress_initialize(VALUE obj)
{
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* ctx = ZSTD_createDCtx();
if (ctx == NULL) {
rb_raise(rb_eRuntimeError, "%s", "ZSTD_createDCtx error");
}
sd->ctx = ctx;
sd->buf = rb_str_new(NULL, buffOutSize);
sd->buf_size = buffOutSize;
return obj;
}
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Instance Method Details
#<<(src) ⇒ Object
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# File 'ext/zstdruby/streaming_decompress.c', line 91
static VALUE
rb_streaming_decompress_addstr(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);
while (input.pos < input.size) {
ZSTD_outBuffer output = { (void*)output_data, sd->buf_size, 0 };
size_t const result = ZSTD_decompressStream(sd->ctx, &output, &input);
if (ZSTD_isError(result)) {
rb_raise(rb_eRuntimeError, "compress error error code: %s", ZSTD_getErrorName(result));
}
}
return obj;
}
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#decompress(src) ⇒ Object
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# File 'ext/zstdruby/streaming_decompress.c', line 68
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_decompressStream(sd->ctx, &output, &input);
if (ZSTD_isError(ret)) {
rb_raise(rb_eRuntimeError, "compress error error code: %s", ZSTD_getErrorName(ret));
}
rb_str_cat(result, output.dst, output.pos);
}
return result;
}
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