ddidderr/zstd-rs
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

minor refactor

Browse Source
This commit is contained in:
Yann Collet
2016-12-02 12:40:57 -08:00
parent 2238312c2f
commit 5bd4237beb
2 changed files with 39 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files
programs/Makefile
+2 -2
View File
@@ -27,7 +27,7 @@ else
ALIGN_LOOP = ALIGN_LOOP =
endif endif
CPPFLAGS= -I$(ZSTDDIR) -I$(ZSTDDIR)/common -I$(ZSTDDIR)/dictBuilder CPPFLAGS+= -I$(ZSTDDIR) -I$(ZSTDDIR)/common -I$(ZSTDDIR)/dictBuilder
CFLAGS ?= -O3 CFLAGS ?= -O3
CFLAGS += -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow -Wstrict-aliasing=1 \ CFLAGS += -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow -Wstrict-aliasing=1 \
-Wswitch-enum -Wdeclaration-after-statement -Wstrict-prototypes -Wundef \ -Wswitch-enum -Wdeclaration-after-statement -Wstrict-prototypes -Wundef \
@@ -126,7 +126,7 @@ zstd-compress: $(ZSTDCOMMON_FILES) $(ZSTDCOMP_FILES) zstdcli.c fileio.c
gzstd: clean_decomp_o gzstd: clean_decomp_o
ifeq ($(shell ld -lz 2>/dev/null && echo -n true),true) ifeq ($(shell ld -lz 2>/dev/null && echo -n true),true)
$(MAKE) zstd MOREFLAGS=-DZSTD_GZDECOMPRESS LDFLAGS="-lz" CPPFLAGS=-DZSTD_GZDECOMPRESS LDFLAGS="-lz" $(MAKE) zstd
else else
$(MAKE) zstd $(MAKE) zstd
endif endif
programs/fileio.c
+19 -23
View File
@@ -7,7 +7,6 @@
* of patent rights can be found in the PATENTS file in the same directory. * of patent rights can be found in the PATENTS file in the same directory.
*/ */
/* ************************************* /* *************************************
* Compiler Options * Compiler Options
***************************************/ ***************************************/
@@ -587,7 +586,7 @@ static void FIO_fwriteSparseEnd(FILE* file, unsigned storedSkips)
@return : size of decoded frame @return : size of decoded frame
*/ */
unsigned long long FIO_decompressFrame(dRess_t ress, unsigned long long FIO_decompressFrame(dRess_t ress,
FILE* foutput, FILE* finput, size_t alreadyLoaded, FILE* finput, size_t alreadyLoaded,
U64 alreadyDecoded) U64 alreadyDecoded)
{ {
U64 frameSize = 0; U64 frameSize = 0;
@@ -610,7 +609,7 @@ unsigned long long FIO_decompressFrame(dRess_t ress,
if (ZSTD_isError(readSizeHint)) EXM_THROW(36, "Decoding error : %s", ZSTD_getErrorName(readSizeHint)); if (ZSTD_isError(readSizeHint)) EXM_THROW(36, "Decoding error : %s", ZSTD_getErrorName(readSizeHint));
/* Write block */ /* Write block */
storedSkips = FIO_fwriteSparse(foutput, ress.dstBuffer, outBuff.pos, storedSkips); storedSkips = FIO_fwriteSparse(ress.dstFile, ress.dstBuffer, outBuff.pos, storedSkips);
frameSize += outBuff.pos; frameSize += outBuff.pos;
DISPLAYUPDATE(2, "\rDecoded : %u MB... ", (U32)((alreadyDecoded+frameSize)>>20) ); DISPLAYUPDATE(2, "\rDecoded : %u MB... ", (U32)((alreadyDecoded+frameSize)>>20) );
@@ -623,7 +622,7 @@ unsigned long long FIO_decompressFrame(dRess_t ress,
if (readSize < toRead) EXM_THROW(39, "Read error : premature end"); if (readSize < toRead) EXM_THROW(39, "Read error : premature end");
} } } }
FIO_fwriteSparseEnd(foutput, storedSkips); FIO_fwriteSparseEnd(ress.dstFile, storedSkips);
return frameSize; return frameSize;
} }
@@ -650,14 +649,11 @@ static unsigned FIO_passThrough(FILE* foutput, FILE* finput, void* buffer, size_
return 0; return 0;
} }
#ifdef ZSTD_GZDECOMPRESS #ifdef ZSTD_GZDECOMPRESS
static size_t FIO_decompressGzFile(dRess_t ress, size_t headBufSize, const char* srcFileName, FILE* srcFile) static unsigned long long FIO_decompressGzFrame(dRess_t ress, FILE* srcFile, const char* srcFileName, size_t alreadyLoaded)
{ {
int ret;
unsigned char in[1];
unsigned char* headBuf = (unsigned char*)ress.srcBuffer; unsigned char* headBuf = (unsigned char*)ress.srcBuffer;
size_t decompBytes, outFileSize = 0; unsigned long long outFileSize = 0;
z_stream strm; z_stream strm;
strm.zalloc = Z_NULL; strm.zalloc = Z_NULL;
@@ -665,32 +661,33 @@ static size_t FIO_decompressGzFile(dRess_t ress, size_t headBufSize, const char*
strm.opaque = Z_NULL; strm.opaque = Z_NULL;
strm.next_in = 0; strm.next_in = 0;
strm.avail_in = Z_NULL; strm.avail_in = Z_NULL;
if (inflateInit2(&strm, 15 + 16) != Z_OK) return 0; if (inflateInit2(&strm, 15 /* maxWindowLogSize */ + 16 /* gzip only */) != Z_OK) return 0; /* see http://www.zlib.net/manual.html */
strm.next_out = ress.dstBuffer; strm.next_out = ress.dstBuffer;
strm.avail_out = ress.dstBufferSize; strm.avail_out = ress.dstBufferSize;
for ( ; ; ) { for ( ; ; ) {
if (headBufSize) { unsigned char in[1];
headBufSize--; if (alreadyLoaded) {
alreadyLoaded--;
in[0] = *headBuf++; in[0] = *headBuf++;
} else { } else {
if (fread(in, 1, 1, srcFile) == 0) break; if (fread(in, 1, 1, srcFile) == 0) break;
} }
strm.next_in = in; strm.next_in = in;
strm.avail_in = 1; strm.avail_in = 1;
ret = inflate(&strm, Z_NO_FLUSH); { int const ret = inflate(&strm, Z_NO_FLUSH);
if (ret == Z_STREAM_END) break; if (ret == Z_STREAM_END) break;
if (ret != Z_OK) { DISPLAY("zstd: %s: inflate error %d \n", srcFileName, ret); return 0; } if (ret != Z_OK) { DISPLAY("zstd: %s: inflate error %d \n", srcFileName, ret); return 0; }
}
decompBytes = ress.dstBufferSize - strm.avail_out; { size_t const decompBytes = ress.dstBufferSize - strm.avail_out;
if (decompBytes) { if (decompBytes) {
if (fwrite(ress.dstBuffer, 1, decompBytes, ress.dstFile) != (size_t)decompBytes) EXM_THROW(31, "Write error : cannot write to output file"); if (fwrite(ress.dstBuffer, 1, decompBytes, ress.dstFile) != decompBytes) EXM_THROW(31, "Write error : cannot write to output file");
outFileSize += decompBytes; outFileSize += decompBytes;
strm.next_out = ress.dstBuffer; strm.next_out = ress.dstBuffer;
strm.avail_out = ress.dstBufferSize; strm.avail_out = ress.dstBufferSize;
} } } }
}
inflateEnd(&strm); inflateEnd(&strm);
return outFileSize; return outFileSize;
@@ -705,10 +702,9 @@ static size_t FIO_decompressGzFile(dRess_t ress, size_t headBufSize, const char*
*/ */
static int FIO_decompressSrcFile(dRess_t ress, const char* srcFileName) static int FIO_decompressSrcFile(dRess_t ress, const char* srcFileName)
{ {
unsigned long long filesize = 0;
FILE* const dstFile = ress.dstFile;
FILE* srcFile; FILE* srcFile;
unsigned readSomething = 0; unsigned readSomething = 0;
unsigned long long filesize = 0;
if (UTIL_isDirectory(srcFileName)) { if (UTIL_isDirectory(srcFileName)) {
DISPLAYLEVEL(1, "zstd: %s is a directory -- ignored \n", srcFileName); DISPLAYLEVEL(1, "zstd: %s is a directory -- ignored \n", srcFileName);
@@ -732,17 +728,17 @@ static int FIO_decompressSrcFile(dRess_t ress, const char* srcFileName)
if (sizeCheck != toRead) { DISPLAY("zstd: %s: unknown header \n", srcFileName); fclose(srcFile); return 1; } /* srcFileName is empty */ if (sizeCheck != toRead) { DISPLAY("zstd: %s: unknown header \n", srcFileName); fclose(srcFile); return 1; } /* srcFileName is empty */
if (buf[0] == 31 && buf[1] == 139) { /* gz header */ if (buf[0] == 31 && buf[1] == 139) { /* gz header */
#ifdef ZSTD_GZDECOMPRESS #ifdef ZSTD_GZDECOMPRESS
size_t const result = FIO_decompressGzFile(ress, toRead, srcFileName, srcFile); unsigned long long const result = FIO_decompressGzFrame(ress, srcFile, srcFileName, toRead);
if (result == 0) return 1; if (result == 0) return 1;
filesize += result; filesize += result;
#else #else
DISPLAYLEVEL(1, "zstd: %s: gzip file cannot be uncompressed -- ignored (zstd compiled without ZSTD_GZDECOMPRESS) \n", srcFileName); DISPLAYLEVEL(1, "zstd: %s: gzip file cannot be uncompressed (zstd compiled without ZSTD_GZDECOMPRESS) -- ignored \n", srcFileName);
return 1; return 1;
#endif #endif
} else { } else {
if (!ZSTD_isFrame(ress.srcBuffer, toRead)) { if (!ZSTD_isFrame(ress.srcBuffer, toRead)) {
if ((g_overwrite) && !strcmp (srcFileName, stdinmark)) { /* pass-through mode */ if ((g_overwrite) && !strcmp (srcFileName, stdinmark)) { /* pass-through mode */
unsigned const result = FIO_passThrough(dstFile, srcFile, ress.srcBuffer, ress.srcBufferSize); unsigned const result = FIO_passThrough(ress.dstFile, srcFile, ress.srcBuffer, ress.srcBufferSize);
if (fclose(srcFile)) EXM_THROW(32, "zstd: %s close error", srcFileName); /* error should never happen */ if (fclose(srcFile)) EXM_THROW(32, "zstd: %s close error", srcFileName); /* error should never happen */
return result; return result;
} else { } else {
@@ -750,7 +746,7 @@ static int FIO_decompressSrcFile(dRess_t ress, const char* srcFileName)
fclose(srcFile); fclose(srcFile);
return 1; return 1;
} } } }
filesize += FIO_decompressFrame(ress, dstFile, srcFile, toRead, filesize); filesize += FIO_decompressFrame(ress, srcFile, toRead, filesize);
} }
} }