diff options
Diffstat (limited to 'src/libs/7zip/unix/CPP/7zip/Archive/Tar/TarOut.cpp')
-rw-r--r-- | src/libs/7zip/unix/CPP/7zip/Archive/Tar/TarOut.cpp | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/src/libs/7zip/unix/CPP/7zip/Archive/Tar/TarOut.cpp b/src/libs/7zip/unix/CPP/7zip/Archive/Tar/TarOut.cpp new file mode 100644 index 000000000..e542a3b2f --- /dev/null +++ b/src/libs/7zip/unix/CPP/7zip/Archive/Tar/TarOut.cpp @@ -0,0 +1,187 @@ +// TarOut.cpp + +#include "StdAfx.h" + +#include "Common/IntToString.h" + +#include "../../Common/StreamUtils.h" + +#include "TarOut.h" + +namespace NArchive { +namespace NTar { + +HRESULT COutArchive::WriteBytes(const void *buffer, UInt32 size) +{ + return WriteStream(m_Stream, buffer, size); +} + +void COutArchive::Create(ISequentialOutStream *outStream) +{ + m_Stream = outStream; +} + +static AString MakeOctalString(UInt64 value) +{ + char s[32]; + ConvertUInt64ToString(value, s, 8); + return AString(s) + ' '; +} + +static void MyStrNCpy(char *dest, const char *src, int size) +{ + for (int i = 0; i < size; i++) + { + char c = src[i]; + dest[i] = c; + if (c == 0) + break; + } +} + +static bool MakeOctalString8(char *s, UInt32 value) +{ + AString tempString = MakeOctalString(value); + + const int kMaxSize = 8; + if (tempString.Length() >= kMaxSize) + return false; + int numSpaces = kMaxSize - (tempString.Length() + 1); + for(int i = 0; i < numSpaces; i++) + s[i] = ' '; + MyStringCopy(s + numSpaces, (const char *)tempString); + return true; +} + +static void MakeOctalString12(char *s, UInt64 value) +{ + AString tempString = MakeOctalString(value); + const int kMaxSize = 12; + if (tempString.Length() > kMaxSize) + { + // GNU extension; + s[0] = (char)(Byte)0x80; + s[1] = s[2] = s[3] = 0; + for (int i = 0; i < 8; i++, value <<= 8) + s[4 + i] = (char)(value >> 56); + return; + } + int numSpaces = kMaxSize - tempString.Length(); + for(int i = 0; i < numSpaces; i++) + s[i] = ' '; + memmove(s + numSpaces, (const char *)tempString, tempString.Length()); +} + +static bool CopyString(char *dest, const AString &src, int maxSize) +{ + if (src.Length() >= maxSize) + return false; + MyStringCopy(dest, (const char *)src); + return true; +} + +#define RETURN_IF_NOT_TRUE(x) { if (!(x)) return E_FAIL; } + +HRESULT COutArchive::WriteHeaderReal(const CItem &item) +{ + char record[NFileHeader::kRecordSize]; + char *cur = record; + int i; + for (i = 0; i < NFileHeader::kRecordSize; i++) + record[i] = 0; + + // RETURN_IF_NOT_TRUE(CopyString(header.Name, item.Name, NFileHeader::kNameSize)); + if (item.Name.Length() > NFileHeader::kNameSize) + return E_FAIL; + MyStrNCpy(cur, item.Name, NFileHeader::kNameSize); + cur += NFileHeader::kNameSize; + + RETURN_IF_NOT_TRUE(MakeOctalString8(cur, item.Mode)); cur += 8; + RETURN_IF_NOT_TRUE(MakeOctalString8(cur, item.UID)); cur += 8; + RETURN_IF_NOT_TRUE(MakeOctalString8(cur, item.GID)); cur += 8; + + MakeOctalString12(cur, item.Size); cur += 12; + MakeOctalString12(cur, item.MTime); cur += 12; + + memmove(cur, NFileHeader::kCheckSumBlanks, 8); + cur += 8; + + *cur++ = item.LinkFlag; + + RETURN_IF_NOT_TRUE(CopyString(cur, item.LinkName, NFileHeader::kNameSize)); + cur += NFileHeader::kNameSize; + + memmove(cur, item.Magic, 8); + cur += 8; + + RETURN_IF_NOT_TRUE(CopyString(cur, item.User, NFileHeader::kUserNameSize)); + cur += NFileHeader::kUserNameSize; + RETURN_IF_NOT_TRUE(CopyString(cur, item.Group, NFileHeader::kGroupNameSize)); + cur += NFileHeader::kGroupNameSize; + + + if (item.DeviceMajorDefined) + RETURN_IF_NOT_TRUE(MakeOctalString8(cur, item.DeviceMajor)); + cur += 8; + + if (item.DeviceMinorDefined) + RETURN_IF_NOT_TRUE(MakeOctalString8(cur, item.DeviceMinor)); + cur += 8; + + + UInt32 checkSumReal = 0; + for(i = 0; i < NFileHeader::kRecordSize; i++) + checkSumReal += Byte(record[i]); + + RETURN_IF_NOT_TRUE(MakeOctalString8(record + 148, checkSumReal)); + + return WriteBytes(record, NFileHeader::kRecordSize); +} + +HRESULT COutArchive::WriteHeader(const CItem &item) +{ + int nameSize = item.Name.Length(); + if (nameSize < NFileHeader::kNameSize) + return WriteHeaderReal(item); + + CItem modifiedItem = item; + int nameStreamSize = nameSize + 1; + modifiedItem.Size = nameStreamSize; + modifiedItem.LinkFlag = 'L'; + modifiedItem.Name = NFileHeader::kLongLink; + modifiedItem.LinkName.Empty(); + RINOK(WriteHeaderReal(modifiedItem)); + RINOK(WriteBytes(item.Name, nameStreamSize)); + RINOK(FillDataResidual(nameStreamSize)); + + modifiedItem = item; + modifiedItem.Name = item.Name.Left(NFileHeader::kNameSize - 1); + return WriteHeaderReal(modifiedItem); +} + +HRESULT COutArchive::FillDataResidual(UInt64 dataSize) +{ + UInt32 lastRecordSize = UInt32(dataSize & (NFileHeader::kRecordSize - 1)); + if (lastRecordSize == 0) + return S_OK; + UInt32 residualSize = NFileHeader::kRecordSize - lastRecordSize; + Byte residualBytes[NFileHeader::kRecordSize]; + for (UInt32 i = 0; i < residualSize; i++) + residualBytes[i] = 0; + return WriteBytes(residualBytes, residualSize); +} + +HRESULT COutArchive::WriteFinishHeader() +{ + Byte record[NFileHeader::kRecordSize]; + int i; + for (i = 0; i < NFileHeader::kRecordSize; i++) + record[i] = 0; + for (i = 0; i < 2; i++) + { + RINOK(WriteBytes(record, NFileHeader::kRecordSize)); + } + return S_OK; +} + +}} |