ddidderr/zstd-rs
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refactoring for C90 syntax

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This commit is contained in:
Paul Cruz
2017-06-12 16:53:50 -07:00
parent 6e33c74133
commit 618a7b66e2
2 changed files with 50 additions and 24 deletions
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programs/fileio.c
+46 -20
View File
@@ -891,36 +891,54 @@ int getFileInfo(fileInfo_t* info, const char* inFileName){
while(1){
BYTE magicNumberBuffer[4];
size_t numBytesRead = fread(magicNumberBuffer, 1, 4, srcFile);
U32 magicNumber;
if(numBytesRead != 4) break;
U32 magicNumber = MEM_readLE32(magicNumberBuffer);
magicNumber = MEM_readLE32(magicNumberBuffer);
if(magicNumber==ZSTD_MAGICNUMBER){
int frameContentSizeBytes=0;
info->numActualFrames++;
BYTE frameHeaderDescriptor;
fread(&frameHeaderDescriptor, 1, 1, srcFile);
int frameContentSizeFlag;
int singleSegmentFlag;
int contentChecksumFlag;
int dictionaryIDFlag;
int frameContentSizeBytes=0;
int windowDescriptorBytes;
int dictionaryIDBytes;
int totalFrameHeaderBytes;
BYTE* frameHeader;
U64 additional;
int lastBlock;
size_t readBytes = fread(&frameHeaderDescriptor, 1, 1, srcFile);
info->numActualFrames++;
if(readBytes != 1){
DISPLAY("There was an error with reading frame header descriptor\n");
exit(1);
}
/* calculate actual frame header size */
int frameContentSizeFlag = frameHeaderDescriptor >> 6;
int singleSegmentFlag = (frameHeaderDescriptor & (1 << 5)) >> 5;
int contentChecksumFlag = (frameHeaderDescriptor & (1 << 2)) >> 2;
int dictionaryIDFlag = frameHeaderDescriptor & 3;
frameContentSizeFlag = frameHeaderDescriptor >> 6;
singleSegmentFlag = (frameHeaderDescriptor & (1 << 5)) >> 5;
contentChecksumFlag = (frameHeaderDescriptor & (1 << 2)) >> 2;
dictionaryIDFlag = frameHeaderDescriptor & 3;
if(frameContentSizeFlag!=0){
frameContentSizeBytes = 1 << frameContentSizeFlag;
}
else if(singleSegmentFlag){
frameContentSizeBytes = 1;
}
int windowDescriptorBytes = singleSegmentFlag ? 0 : 1;
int dictionaryIDBytes = dictionaryIDFlag ? 1 << (dictionaryIDFlag - 1): 0;
int totalFrameHeaderBytes = 4 + 1 + windowDescriptorBytes + frameContentSizeBytes + dictionaryIDBytes;
windowDescriptorBytes = singleSegmentFlag ? 0 : 1;
dictionaryIDBytes = dictionaryIDFlag ? 1 << (dictionaryIDFlag - 1): 0;
totalFrameHeaderBytes = 4 + 1 + windowDescriptorBytes + frameContentSizeBytes + dictionaryIDBytes;
/* reset to beginning of from and read entire header */
fseek(srcFile, -5, SEEK_CUR);
BYTE* frameHeader = (BYTE*)malloc(totalFrameHeaderBytes);
fread(frameHeader, totalFrameHeaderBytes, 1, srcFile);
frameHeader = (BYTE*)malloc(totalFrameHeaderBytes);
readBytes = fread(frameHeader, 1, totalFrameHeaderBytes, srcFile);
if(readBytes != (size_t)totalFrameHeaderBytes){
DISPLAY("There was an error reading the frame header\n");
exit(1);
}
/* get decompressed file size */
U64 additional = ZSTD_getFrameContentSize(frameHeader, totalFrameHeaderBytes);
additional = ZSTD_getFrameContentSize(frameHeader, totalFrameHeaderBytes);
if(additional!=ZSTD_CONTENTSIZE_UNKNOWN && additional!=ZSTD_CONTENTSIZE_ERROR){
info->decompressedSize += additional;
}
@@ -934,10 +952,14 @@ int getFileInfo(fileInfo_t* info, const char* inFileName){
}
/* skip the rest of the blocks in the frame */
int lastBlock = 0;
lastBlock = 0;
do{
BYTE blockHeaderBuffer[3];
fread(blockHeaderBuffer, 3, 1, srcFile);
readBytes = fread(blockHeaderBuffer, 1, 3, srcFile);
if(readBytes != 3){
DISPLAY("There was a problem reading the block header\n");
exit(1);
}
U32 blockHeader = MEM_readLE24(blockHeaderBuffer);
lastBlock = blockHeader & 1;
int blockSize = (blockHeader - (blockHeader & 7)) >> 3;
@@ -950,7 +972,11 @@ int getFileInfo(fileInfo_t* info, const char* inFileName){
else if(magicNumber==ZSTD_MAGIC_SKIPPABLE_START){
info->numSkippableFrames++;
BYTE frameSizeBuffer[4];
fread(frameSizeBuffer, 4, 1, srcFile);
size_t readBytes = fread(frameSizeBuffer, 1, 4, srcFile);
if(readBytes != 4){
DISPLAY("There was an error reading skippable frame size");
exit(1);
}
long frameSize = MEM_readLE32(frameSizeBuffer);
fseek(srcFile, frameSize, SEEK_CUR);
}
@@ -985,9 +1011,9 @@ int FIO_listFile(const char* inFileName, int displayLevel){
else{
DISPLAY("# Zstandard Frames: %d\n", info->numActualFrames);
DISPLAY("# Skippable Frames: %d\n", info->numSkippableFrames);
DISPLAY("Compressed Size: %.2f MB (%lu B)\n", compressedSizeMB, info->compressedSize);
DISPLAY("Compressed Size: %.2f MB (%llu B)\n", compressedSizeMB, info->compressedSize);
if(info->canComputeDecompSize){
DISPLAY("Decompressed Size: %.2f MB (%lu B)\n", decompressedSizeMB, info->decompressedSize);
DISPLAY("Decompressed Size: %.2f MB (%llu B)\n", decompressedSizeMB, info->decompressedSize);
DISPLAY("Ratio: %.4f\n", compressedSizeMB/decompressedSizeMB);
}
if(info->usesCheck){
programs/zstdcli.c
+4 -4
View File
@@ -674,13 +674,13 @@ int main(int argCount, const char* argv[])
}
#endif
if(operation==zom_list){
DISPLAY("===========================================\n");
DISPLAY("Printing information about compressed files\n");
DISPLAY("===========================================\n");
unsigned u;
DISPLAY("===========================================\n");
DISPLAY("Printing information about compressed files\n");
DISPLAY("===========================================\n");
DISPLAY("Number of files listed: %d\n", filenameIdx);
for(u=0; u<filenameIdx;u++){
FIO_listFile(filenameTable[u],g_displayLevel);
FIO_listFile(filenameTable[u],g_displayLevel);
}
CLEAN_RETURN(0);
}