108 lines
2.2 KiB
C++
108 lines
2.2 KiB
C++
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#include "demofile.h"
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#include "demotypes.h"
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#include <cassert>
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#include <utility>
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// DemoFileReader
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size_t myfread ( void * ptr, size_t size, size_t count, FILE * stream )
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{
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size_t ret = fread(ptr, size, count, stream);
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if (ret != count)
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throw("fread error");
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return ret;
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}
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DemoFileReader::DemoFileReader(FILE* fp):
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m_demoFp(fp)
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{
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}
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bool DemoFileReader::IsOk() const
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{
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return ferror(m_demoFp) == 0;
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}
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void DemoFileReader::ReadDemoHeader(demoheader_t& header)
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{
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myfread(&header, sizeof(demoheader_t), 1, m_demoFp);
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}
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int32_t DemoFileReader::ReadRawData(uint8_t* buffer, int32_t maxLength)
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{
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FILE* fp = m_demoFp;
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int32_t size;
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myfread(&size, sizeof(int32_t), 1, fp);
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if (buffer && (maxLength < size))
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{
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return -1;
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}
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if (buffer)
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{
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myfread(buffer, 1, size, fp);
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}
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else
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{
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fseek(fp, size, SEEK_CUR);
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}
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return size;
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}
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Array<uint8_t> DemoFileReader::ReadRawData(int32_t maxLength)
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{
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FILE* fp = m_demoFp;
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int32_t size;
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myfread(&size, sizeof(int32_t), 1, fp);
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Array<uint8_t> data;
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if (maxLength < size)
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{
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return data;
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}
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data.reset(size);
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myfread(data.begin(), 1, size, fp);
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return data;
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}
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void DemoFileReader::ReadSequenceInfo(int32_t& seqNum1, int32_t& seqNum2)
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{
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FILE* fp = m_demoFp;
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myfread(&seqNum1, sizeof(int32_t), 1, fp);
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myfread(&seqNum2, sizeof(int32_t), 1, fp);
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}
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void DemoFileReader::ReadCmdInfo(democmdinfo_t& info)
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{
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myfread(&info, sizeof(democmdinfo_t), 1, m_demoFp);
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}
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void DemoFileReader::ReadCmdHeader(unsigned char& cmd, int32_t& tick)
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{
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FILE* fp = m_demoFp;
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myfread(&cmd, 1, sizeof(unsigned char), fp);
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if (cmd > dem_lastcmd)
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{
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cmd = dem_stop;
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}
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if (cmd != dem_stop)
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myfread(&tick, 1, sizeof(int32_t), fp);
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}
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int32_t DemoFileReader::ReadUserCmd(int32_t& cmdNum, uint8_t* buffer, int32_t maxLength)
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{
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myfread(&cmdNum, sizeof(int32_t), 1, m_demoFp);
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return ReadRawData(buffer, maxLength);
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}
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Array<uint8_t> DemoFileReader::ReadUserCmd(int32_t& cmdNum, int32_t maxLength)
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{
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myfread(&cmdNum, sizeof(int32_t), 1, m_demoFp);
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return ReadRawData(maxLength);
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}
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