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Codebase cleanups and README

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This commit is contained in:
Jack Andersen
2016-01-25 10:21:10 -10:00
parent df5e8d068c
commit 3de662940b
6 changed files with 299 additions and 122 deletions
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111
lib/FileIOFILE.cpp
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@@ -3,15 +3,6 @@
#include "NOD/Util.hpp"
#include "NOD/IFileIO.hpp"
#if _WIN32
#define ftello _ftelli64
#define fseeko _fseeki64
#endif
/* Macros for min/max */
#define MIN(a,b) (((a)<(b))?(a):(b))
#define MAX(a,b) (((a)>(b))?(a):(b))
namespace NOD
{
@@ -26,38 +17,15 @@ public:
bool exists()
{
#if _WIN32
HANDLE fp = CreateFileW(m_path.c_str(), GENERIC_READ, FILE_SHARE_READ,
nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr);
if (fp == INVALID_HANDLE_VALUE)
return false;
CloseHandle(fp);
return true;
#else
FILE* fp = fopen(m_path.c_str(), "rb");
if (!fp)
return false;
fclose(fp);
return true;
#endif
}
uint64_t size()
{
#if _WIN32
HANDLE fp = CreateFileW(m_path.c_str(), GENERIC_READ, FILE_SHARE_READ,
nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr);
if (fp == INVALID_HANDLE_VALUE)
return 0;
LARGE_INTEGER sz;
if (!GetFileSizeEx(fp, &sz))
{
CloseHandle(fp);
return 0;
}
CloseHandle(fp);
return sz.QuadPart;
#else
FILE* fp = fopen(m_path.c_str(), "rb");
if (!fp)
return 0;
@@ -65,44 +33,20 @@ public:
uint64_t result = ftello(fp);
fclose(fp);
return result;
#endif
}
struct WriteStream : public IFileIO::IWriteStream
{
uint8_t buf[0x7c00];
#if _WIN32
HANDLE fp;
#else
FILE* fp;
#endif
WriteStream(const SystemString& path)
{
#if _WIN32
fp = CreateFileW(path.c_str(), GENERIC_WRITE, FILE_SHARE_WRITE,
nullptr, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr);
if (fp == INVALID_HANDLE_VALUE)
goto FailLoc;
#else
fp = fopen(path.c_str(), "wb");
if (!fp)
goto FailLoc;
#endif
return;
FailLoc:
LogModule.report(LogVisor::FatalError, _S("unable to open '%s' for writing"), path.c_str());
LogModule.report(LogVisor::FatalError, _S("unable to open '%s' for writing"), path.c_str());
}
WriteStream(const SystemString& path, uint64_t offset)
{
#if _WIN32
fp = CreateFileW(path.c_str(), GENERIC_WRITE, FILE_SHARE_WRITE,
nullptr, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr);
if (fp == INVALID_HANDLE_VALUE)
goto FailLoc;
LARGE_INTEGER lioffset;
lioffset.QuadPart = offset;
SetFilePointerEx(fp, lioffset, nullptr, FILE_BEGIN);
#else
fp = fopen(path.c_str(), "ab");
if (!fp)
goto FailLoc;
@@ -111,35 +55,24 @@ public:
if (!fp)
goto FailLoc;
FSeek(fp, offset, SEEK_SET);
#endif
return;
FailLoc:
LogModule.report(LogVisor::FatalError, _S("unable to open '%s' for writing"), path.c_str());
}
~WriteStream()
{
#if _WIN32
CloseHandle(fp);
#else
fclose(fp);
#endif
}
uint64_t write(const void* buf, uint64_t length)
{
#if _WIN32
DWORD ret = 0;
WriteFile(fp, buf, length, &ret, nullptr);
return ret;
#else
return fwrite(buf, 1, length, fp);
#endif
}
uint64_t copyFromDisc(IPartReadStream& discio, uint64_t length)
{
uint64_t read = 0;
while (length)
{
uint64_t thisSz = MIN(0x7c00, length);
uint64_t thisSz = NOD::min(uint64_t(0x7c00), length);
uint64_t readSz = discio.read(buf, thisSz);
if (thisSz != readSz)
{
@@ -168,73 +101,37 @@ public:
struct ReadStream : public IFileIO::IReadStream
{
#if _WIN32
HANDLE fp;
#else
FILE* fp;
#endif
uint8_t buf[0x7c00];
ReadStream(const SystemString& path)
{
#if _WIN32
fp = CreateFileW(path.c_str(), GENERIC_READ, FILE_SHARE_READ,
nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr);
if (fp == INVALID_HANDLE_VALUE)
goto FailLoc;
#else
fp = fopen(path.c_str(), "rb");
if (!fp)
goto FailLoc;
#endif
return;
FailLoc:
LogModule.report(LogVisor::FatalError, _S("unable to open '%s' for reading"), path.c_str());
LogModule.report(LogVisor::FatalError, _S("unable to open '%s' for reading"), path.c_str());
}
ReadStream(const SystemString& path, uint64_t offset)
: ReadStream(path)
{
#if _WIN32
LARGE_INTEGER lioffset;
lioffset.QuadPart = offset;
SetFilePointerEx(fp, lioffset, nullptr, FILE_BEGIN);
#else
FSeek(fp, offset, SEEK_SET);
#endif
}
~ReadStream()
{
#if _WIN32
CloseHandle(fp);
#else
fclose(fp);
#endif
}
void seek(int64_t offset, int whence)
{
#if _WIN32
LARGE_INTEGER li;
li.QuadPart = offset;
SetFilePointerEx(fp, li, nullptr, whence);
#else
FSeek(fp, offset, whence);
#endif
}
uint64_t read(void* buf, uint64_t length)
{
#if _WIN32
DWORD ret = 0;
ReadFile(fp, buf, length, &ret, nullptr);
return ret;
#else
return fread(buf, 1, length, fp);
#endif
}
uint64_t copyToDisc(IPartWriteStream& discio, uint64_t length)
{
uint64_t written = 0;
while (length)
{
uint64_t thisSz = MIN(0x7c00, length);
uint64_t thisSz = NOD::min(uint64_t(0x7c00), length);
if (read(buf, thisSz) != thisSz)
{
LogModule.report(LogVisor::FatalError, "unable to read enough from file");