Module: Snappy

Defined in:
lib/snappy/shim.rb,
lib/snappy/hadoop.rb,
lib/snappy/reader.rb,
lib/snappy/writer.rb,
lib/snappy/version.rb,
lib/snappy/hadoop/reader.rb,
lib/snappy/hadoop/writer.rb,
ext/api.c

Defined Under Namespace

Modules: Hadoop Classes: Error, Reader, Writer

Constant Summary collapse

VERSION = 
"0.4.0"

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.deflate(*args) ⇒ Object 



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# File 'ext/api.c', line 19

static VALUE
snappy_deflate(int argc, VALUE *argv, VALUE self)
{
    VALUE src, dst;
    size_t output_length;
    snappy_status result;

    rb_scan_args(argc, argv, "11", &src, &dst);
    StringValue(src);

    output_length = snappy_max_compressed_length(RSTRING_LEN(src));

    if (NIL_P(dst)) {
        dst = rb_str_new(NULL, output_length);
    } else {
    	StringValue(dst);
    	rb_str_resize(dst, output_length);
    }

    result = snappy_compress(RSTRING_PTR(src), RSTRING_LEN(src), RSTRING_PTR(dst), &output_length);
    if (result != SNAPPY_OK) {
        return snappy_raise(result);
    }

    rb_str_resize(dst, output_length);
    return dst;
}

.inflate(*args) ⇒ Object 



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# File 'ext/api.c', line 47

static VALUE
snappy_inflate(int argc, VALUE *argv, VALUE self)
{
    VALUE src, dst;
    size_t output_length;
    snappy_status result;

    rb_scan_args(argc, argv, "11", &src, &dst);
    StringValue(src);

    result = snappy_uncompressed_length(RSTRING_PTR(src), RSTRING_LEN(src), &output_length);
    if (result != SNAPPY_OK) {
        return snappy_raise(result);
    }

    if (NIL_P(dst)) {
        dst = rb_str_new(NULL, output_length);
    } else {
    	StringValue(dst);
    	rb_str_resize(dst, output_length);
    }

    result = snappy_uncompress(RSTRING_PTR(src), RSTRING_LEN(src), RSTRING_PTR(dst), &output_length);
    if (result != SNAPPY_OK) {
        return snappy_raise(result);
    }

    rb_str_resize(dst, output_length);
    return dst;
}

.valid?(str) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/api.c', line 78

static VALUE
snappy_valid_p(VALUE self, VALUE str)
{
    snappy_status result;

    StringValue(str);
    result = snappy_validate_compressed_buffer(RSTRING_PTR(str), RSTRING_LEN(str));
    if (result == SNAPPY_OK) {
        return Qtrue;
    } else {
        return Qfalse;
    }
}

Instance Method Details

#b(str) ⇒ Object 



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# File 'lib/snappy/shim.rb', line 11

def b(str)
  str
end

#set_encoding(io) ⇒ Object 



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# File 'lib/snappy/shim.rb', line 7

def set_encoding(io)
  io
end