began platform support

initial import of platform library code
tested on win32

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%40146
This commit is contained in:
David Anderson
2006-11-05 02:47:13 +00:00
parent c63d26e1c5
commit f83a597e49
6 changed files with 422 additions and 6 deletions
+278
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@@ -0,0 +1,278 @@
#include <stdio.h>
#include "LibrarySys.h"
LibrarySystem g_LibSys;
CLibrary::~CLibrary()
{
if (m_lib)
{
#if defined PLATFORM_WINDOWS
FreeLibrary(m_lib);
#else if defined PLATFORM_POSIX
dlclose(m_lib);
#endif
m_lib = NULL;
}
}
CLibrary::CLibrary(LibraryHandle me)
{
m_lib = me;
}
void CLibrary::CloseLibrary()
{
delete this;
}
void *CLibrary::GetSymbolAddress(const char *symname)
{
#if defined PLATFORM_WINDOWS
return GetProcAddress(m_lib, symname);
#else if defined PLATFORM_POSIX
return dlsym(m_lib, symname);
#endif
}
/********************
** Directory Code **
********************/
CDirectory::CDirectory(const char *path)
{
#if defined PLATFORM_WINDOWS
char newpath[PLATFORM_MAX_PATH];
snprintf(newpath, sizeof(newpath), "%s\\*.*", path);
m_dir = FindFirstFileA(newpath, &m_fd);
if (!IsValid())
{
m_fd.cFileName[0] = '\0';
}
#else if defined PLATFORM_POSIX
m_dir = opendir(path);
if (IsValid())
{
/* :TODO: we need to read past "." and ".."! */
ep = readdir(dp);
snprintf(m_origpath, PLATFORM_MAX_PATH, "%s", path);
} else {
ep = NULL;
}
#endif
}
CDirectory::~CDirectory()
{
if (IsValid())
{
#if defined PLATFORM_WINDOWS
FindClose(m_dir);
#else if defined PLATFORM_POSIX
closedir(m_dir);
#endif
}
}
void CDirectory::NextEntry()
{
#if defined PLATFORM_WINDOWS
if (FindNextFile(m_dir, &m_fd) == 0)
{
FindClose(m_dir);
m_dir = INVALID_HANDLE_VALUE;
}
#else if defined PLATFORM_POSIX
if ((ep=readdir(m_dir) == NULL)
{
closedir(m_dir);
m_dir = NULL;
}
#endif
}
bool CDirectory::IsEntryDirectory()
{
#if defined PLATFORM_WINDOWS
return ((m_fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == FILE_ATTRIBUTE_DIRECTORY);
#else if defined PLATFORM_LINUX
char temppath[PLATFORM_MAX_PATH];
snprintf(temppath, sizeof(temppath), "%s/%s", m_origpath, GetEntryName());
return g_LibrarySys.IsPathDirectory(temppath);
#endif
}
bool CDirectory::IsEntryFile()
{
#if defined PLATFORM_WINDOWS
return !(m_fd.dwFileAttributes & (FILE_ATTRIBUTE_DIRECTORY|FILE_ATTRIBUTE_DEVICE));
#else if defined PLATFORM_POSIX
char temppath[PLATFORM_MAX_PATH];
snprintf(temppath, sizeof(temppath), "%s/%s", m_origpath, GetEntryName());
return g_LibrarySys.IsPathFile(temppath);
#endif
}
const char *CDirectory::GetEntryName()
{
#if defined PLATFORM_WINDOWS
return m_fd.cFileName;
#else if defined PLATFORM_LINUX
return ep ? ep->d_name : "";
#endif
}
bool CDirectory::MoreFiles()
{
return IsValid();
}
bool CDirectory::IsValid()
{
#if defined PLATFORM_WINDOWS
return (m_dir != INVALID_HANDLE_VALUE);
#else if defined PLATFORM_LINUX
return (m_dir != NULL);
#endif
}
/*************************
** Library System Code **
*************************/
bool LibrarySystem::PathExists(const char *path)
{
#if defined PLATFORM_WINDOWS
DWORD attr = GetFileAttributesA(path);
return (attr != INVALID_FILE_ATTRIBUTES);
#else if defined PLATFORM_POSIX
struct stat s;
return (stat(path, &s) == 0);
#endif
}
bool LibrarySystem::IsPathFile(const char *path)
{
#if defined PLATFORM_WINDOWS
DWORD attr = GetFileAttributes(path);
if (attr == INVALID_FILE_ATTRIBUTES)
{
return false;
}
if (attr & (FILE_ATTRIBUTE_DIRECTORY|FILE_ATTRIBUTE_DEVICE))
{
return false;
}
return true;
#else if defined PLATFORM_LINUX
struct stat s;
if (stat(path, &s) != 0)
{
return false;
}
return S_ISREG(s.st_mode) ? true : false;
#endif
}
bool LibrarySystem::IsPathDirectory(const char *path)
{
#if defined PLATFORM_WINDOWS
DWORD attr = GetFileAttributes(path);
if (attr == INVALID_FILE_ATTRIBUTES)
{
return false;
}
if (attr & FILE_ATTRIBUTE_DIRECTORY)
{
return true;
}
#else if defined PLATFORM_LINUX
struct stat s;
if (stat(path, &s) != 0)
{
return false;
}
if (S_ISDIR(s.st_mode))
{
return true;
}
#endif
return false;
}
IDirectory *LibrarySystem::OpenDirectory(const char *path)
{
CDirectory *dir = new CDirectory(path);
if (!dir->IsValid())
{
delete dir;
return NULL;
}
return dir;
}
void LibrarySystem::GetPlatformError(char *error, size_t err_max)
{
if (error && err_max)
{
#if defined PLATFORM_WINDOWS
DWORD dw = GetLastError();
FormatMessageA(
FORMAT_MESSAGE_FROM_SYSTEM,
NULL,
dw,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPSTR)error,
err_max,
NULL);
#else if defined PLATFORM_POSIX
snprintf(error, err_max, "%s", strerror(errno));
#endif
}
}
void LibrarySystem::CloseDirectory(IDirectory *dir)
{
delete dir;
}
ILibrary *LibrarySystem::OpenLibrary(const char *path, char *error, size_t err_max)
{
LibraryHandle lib;
#if defined PLATFORM_WINDOWS
lib = LoadLibraryA(path);
if (!lib)
{
GetPlatformError(error, err_max);
return false;
}
#else if defined PLATFORM_POSIX
lib = dlopen(path, RTLD_NOW);
if (!lib)
{
GetPlatformError(error, err_max);
return false;
}
#endif
return new CLibrary(lib);
}
+65
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#ifndef _INCLUDE_SOURCEMOD_SYSTEM_LIBRARY_H_
#define _INCLUDE_SOURCEMOD_SYSTEM_LIBRARY_H_
#include <ILibrarySys.h>
#include "sm_platform.h"
using namespace SourceMod;
#if defined PLATFORM_WINDOWS
typedef HMODULE LibraryHandle;
#else if defined PLATFORM_POSIX
typedef void * LibraryHandle;
#endif
class CDirectory : public IDirectory
{
public:
CDirectory(const char *path);
~CDirectory();
public:
virtual bool MoreFiles();
virtual void NextEntry();
virtual const char *GetEntryName();
virtual bool IsEntryDirectory();
virtual bool IsEntryFile();
public:
bool IsValid();
private:
#if defined PLATFORM_WINDOWS
HANDLE m_dir;
WIN32_FIND_DATAA m_fd;
#else if defined PLATFORM_LINUX
DIR *m_dir;
struct dirent *ep;
char m_origpath[PLATFORM_MAX_PATH];
#endif
};
class CLibrary : public ILibrary
{
public:
CLibrary(LibraryHandle me);
~CLibrary();
public:
virtual void CloseLibrary();
virtual void *GetSymbolAddress(const char *symname);
private:
LibraryHandle m_lib;
};
class LibrarySystem
{
public:
virtual ILibrary *OpenLibrary(const char *path, char *error, size_t err_max);
virtual IDirectory *OpenDirectory(const char *path);
virtual void CloseDirectory(IDirectory *dir);
virtual bool PathExists(const char *path);
virtual bool IsPathFile(const char *path);
virtual bool IsPathDirectory(const char *path);
virtual void GetPlatformError(char *error, size_t err_max);
};
extern LibrarySystem g_LibSys;
#endif //_INCLUDE_SOURCEMOD_SYSTEM_LIBRARY_H_