134 lines
4.4 KiB
C
134 lines
4.4 KiB
C
/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#include <ruby.h>
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#include <constants.h>
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#include <bytes.h>
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#include <macros.h>
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ID buf_ivar_id;
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ID index_ivar_id;
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ID slice_method_id;
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int GARBAGE_BUFFER_SIZE;
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#define GET_BUF(self) rb_ivar_get(self, buf_ivar_id)
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VALUE rb_thrift_memory_buffer_write(VALUE self, VALUE str);
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VALUE rb_thrift_memory_buffer_read(VALUE self, VALUE length_value);
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VALUE rb_thrift_memory_buffer_read_byte(VALUE self);
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VALUE rb_thrift_memory_buffer_read_into_buffer(VALUE self, VALUE buffer_value, VALUE size_value);
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VALUE rb_thrift_memory_buffer_write(VALUE self, VALUE str) {
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VALUE buf = GET_BUF(self);
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str = force_binary_encoding(str);
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rb_str_buf_cat(buf, StringValuePtr(str), RSTRING_LEN(str));
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return Qnil;
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}
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VALUE rb_thrift_memory_buffer_read(VALUE self, VALUE length_value) {
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int length = FIX2INT(length_value);
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VALUE index_value = rb_ivar_get(self, index_ivar_id);
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int index = FIX2INT(index_value);
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VALUE buf = GET_BUF(self);
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VALUE data = rb_funcall(buf, slice_method_id, 2, index_value, length_value);
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index += length;
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if (index > RSTRING_LEN(buf)) {
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index = RSTRING_LEN(buf);
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}
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if (index >= GARBAGE_BUFFER_SIZE) {
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rb_ivar_set(self, buf_ivar_id, rb_funcall(buf, slice_method_id, 2, INT2FIX(index), INT2FIX(RSTRING_LEN(buf) - 1)));
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index = 0;
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}
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rb_ivar_set(self, index_ivar_id, INT2FIX(index));
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if (RSTRING_LEN(data) < length) {
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rb_raise(rb_eEOFError, "Not enough bytes remain in memory buffer");
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}
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return data;
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}
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VALUE rb_thrift_memory_buffer_read_byte(VALUE self) {
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VALUE index_value = rb_ivar_get(self, index_ivar_id);
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int index = FIX2INT(index_value);
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VALUE buf = GET_BUF(self);
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if (index >= RSTRING_LEN(buf)) {
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rb_raise(rb_eEOFError, "Not enough bytes remain in memory buffer");
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}
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char byte = RSTRING_PTR(buf)[index++];
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if (index >= GARBAGE_BUFFER_SIZE) {
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rb_ivar_set(self, buf_ivar_id, rb_funcall(buf, slice_method_id, 2, INT2FIX(index), INT2FIX(RSTRING_LEN(buf) - 1)));
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index = 0;
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}
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rb_ivar_set(self, index_ivar_id, INT2FIX(index));
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int result = (int) byte;
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return INT2FIX(result);
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}
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VALUE rb_thrift_memory_buffer_read_into_buffer(VALUE self, VALUE buffer_value, VALUE size_value) {
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int i = 0;
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int size = FIX2INT(size_value);
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int index;
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VALUE buf = GET_BUF(self);
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index = FIX2INT(rb_ivar_get(self, index_ivar_id));
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while (i < size) {
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if (index >= RSTRING_LEN(buf)) {
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rb_raise(rb_eEOFError, "Not enough bytes remain in memory buffer");
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}
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char byte = RSTRING_PTR(buf)[index++];
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if (i >= RSTRING_LEN(buffer_value)) {
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rb_raise(rb_eIndexError, "index %d out of string", i);
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}
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((char*)RSTRING_PTR(buffer_value))[i] = byte;
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i++;
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}
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if (index >= GARBAGE_BUFFER_SIZE) {
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rb_ivar_set(self, buf_ivar_id, rb_funcall(buf, slice_method_id, 2, INT2FIX(index), INT2FIX(RSTRING_LEN(buf) - 1)));
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index = 0;
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}
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rb_ivar_set(self, index_ivar_id, INT2FIX(index));
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return INT2FIX(i);
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}
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void Init_memory_buffer() {
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VALUE thrift_memory_buffer_class = rb_const_get(thrift_module, rb_intern("MemoryBufferTransport"));
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rb_define_method(thrift_memory_buffer_class, "write", rb_thrift_memory_buffer_write, 1);
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rb_define_method(thrift_memory_buffer_class, "read", rb_thrift_memory_buffer_read, 1);
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rb_define_method(thrift_memory_buffer_class, "read_byte", rb_thrift_memory_buffer_read_byte, 0);
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rb_define_method(thrift_memory_buffer_class, "read_into_buffer", rb_thrift_memory_buffer_read_into_buffer, 2);
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buf_ivar_id = rb_intern("@buf");
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index_ivar_id = rb_intern("@index");
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slice_method_id = rb_intern("slice");
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GARBAGE_BUFFER_SIZE = FIX2INT(rb_const_get(thrift_memory_buffer_class, rb_intern("GARBAGE_BUFFER_SIZE")));
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}
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