| /* |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| #include "ts_lua_io.h" |
| |
| int64_t |
| IOBufferReaderCopy(TSIOBufferReader readerp, void *buf, int64_t length) |
| { |
| int64_t avail, need, n; |
| const char *start; |
| TSIOBufferBlock blk; |
| |
| n = 0; |
| blk = TSIOBufferReaderStart(readerp); |
| |
| while (blk) { |
| start = TSIOBufferBlockReadStart(blk, readerp, &avail); |
| need = length < avail ? length : avail; |
| |
| if (need > 0) { |
| memcpy((char *)buf + n, start, need); |
| length -= need; |
| n += need; |
| } |
| |
| if (length == 0) { |
| break; |
| } |
| |
| blk = TSIOBufferBlockNext(blk); |
| } |
| |
| return n; |
| } |