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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 /*
     17  * Expanding byte buffer, with primitives for appending basic data types.
     18  */
     19 #ifndef _DALVIK_JDWP_EXPANDBUF
     20 #define _DALVIK_JDWP_EXPANDBUF
     21 
     22 #include "Common.h"     // need u1/u2/u4/u8 types
     23 
     24 struct ExpandBuf;   /* private */
     25 typedef struct ExpandBuf ExpandBuf;
     26 
     27 /* create a new struct */
     28 ExpandBuf* expandBufAlloc(void);
     29 /* free storage */
     30 void expandBufFree(ExpandBuf* pBuf);
     31 
     32 /*
     33  * Accessors.  The buffer pointer and length will only be valid until more
     34  * data is added.
     35  */
     36 u1* expandBufGetBuffer(ExpandBuf* pBuf);
     37 size_t expandBufGetLength(ExpandBuf* pBuf);
     38 
     39 /*
     40  * The "add" operations allocate additional storage and append the data.
     41  *
     42  * There are no "get" operations included with this "class", other than
     43  * GetBuffer().  If you want to get or set data from a position other
     44  * than the end, get a pointer to the buffer and use the inline functions
     45  * defined elsewhere.
     46  *
     47  * expandBufAddSpace() returns a pointer to the *start* of the region
     48  * added.
     49  */
     50 u1* expandBufAddSpace(ExpandBuf* pBuf, int gapSize);
     51 void expandBufAdd1(ExpandBuf* pBuf, u1 val);
     52 void expandBufAdd2BE(ExpandBuf* pBuf, u2 val);
     53 void expandBufAdd4BE(ExpandBuf* pBuf, u4 val);
     54 void expandBufAdd8BE(ExpandBuf* pBuf, u8 val);
     55 void expandBufAddUtf8String(ExpandBuf* pBuf, const u1* str);
     56 
     57 #endif /*_DALVIK_JDWP_EXPANDBUF*/
     58