mirror of
https://github.com/ptitSeb/Serious-Engine
synced 2024-10-06 07:54:51 +02:00
24cb244d43
This was a _ton_ of changes, made 15 years ago, so there are probably some problems to work out still. Among others: Engine/Base/Stream.* was mostly abandoned and will need to be re-ported. Still, this is a pretty good start, and probably holds a world record for lines of changes or something. :)
346 lines
7.7 KiB
C++
346 lines
7.7 KiB
C++
/* Copyright (c) 2002-2012 Croteam Ltd. All rights reserved. */
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/* rcg10142001 Implemented. */
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// !!! FIXME: rcg10142001 This should really be using CTStrings...
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <pwd.h>
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#include <sys/types.h>
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#include <dirent.h>
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#include <sys/param.h>
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#include <unistd.h>
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#include <Engine/Engine.h>
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#include <Engine/Base/FileSystem.h>
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ENGINE_API CFileSystem *_pFileSystem = NULL;
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class CUnixFileSystem : public CFileSystem
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{
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public:
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CUnixFileSystem(const char *argv0, const char *gamename);
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virtual ~CUnixFileSystem(void);
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virtual void GetExecutablePath(char *buf, ULONG bufSize);
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virtual void GetUserDirectory(char *buf, ULONG bufSize);
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virtual CDynamicArray<CTString> *FindFiles(const char *dir,
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const char *wildcard);
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protected:
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char *exePath;
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char *userDir;
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};
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const char *CFileSystem::GetDirSeparator(void)
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{
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return("/");
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}
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BOOL CFileSystem::IsDummyFile(const char *fname)
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{
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return( (strcmp(fname, ".") == 0) || (strcmp(fname, "..") == 0) );
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}
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BOOL CFileSystem::Exists(const char *fname)
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{
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struct stat s;
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if (stat(fname, &s) == -1)
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return(FALSE);
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return(TRUE);
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}
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BOOL CFileSystem::IsDirectory(const char *fname)
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{
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struct stat s;
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if (stat(fname, &s) == -1)
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return(FALSE);
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return(S_ISDIR(s.st_mode) ? TRUE : FALSE);
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}
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CFileSystem *CFileSystem::GetInstance(const char *argv0, const char *gamename)
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{
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return(new CUnixFileSystem(argv0, gamename));
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}
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static char *copyEnvironmentVariable(const char *varname)
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{
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const char *envr = getenv(varname);
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char *retval = NULL;
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if (envr != NULL)
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{
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retval = new char[strlen(envr) + 1];
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strcpy(retval, envr);
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}
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return(retval);
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}
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static char *getUserDirByUID(void)
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{
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uid_t uid = getuid();
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struct passwd *pw;
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char *retval = NULL;
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pw = getpwuid(uid);
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if ((pw != NULL) && (pw->pw_dir != NULL))
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{
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retval = new char[strlen(pw->pw_dir) + 1];
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strcpy(retval, pw->pw_dir);
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}
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return(retval);
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}
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// !!! FIXME: This could stand to use CTFileNames ...
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static char *calcExePath(const char *_argv0)
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{
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char *ptr;
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char *retval = NULL;
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char *argv0 = new char[strlen(_argv0) + 1];
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strcpy(argv0, _argv0); /* _argv0 may be read-only... */
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ptr = strrchr(argv0, '/');
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if (ptr != NULL) // explicit path specified? We're done.
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{
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retval = new char[strlen(argv0) + 1];
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strcpy(retval, argv0);
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}
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// If there isn't a path on argv0, then look through the $PATH for it...
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else
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{
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char *envr;
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char *start;
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char *exe;
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envr = copyEnvironmentVariable("PATH");
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if (!envr)
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{
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delete[] argv0;
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return(NULL);
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}
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start = envr;
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do
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{
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ptr = strchr(start, ':');
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if (ptr)
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*ptr = '\0';
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exe = new char[strlen(start) + strlen(argv0) + 2];
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strcpy(exe, start);
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if (exe[strlen(exe) - 1] != '/') // make sure there's a dir sep...
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strcat(exe, "/");
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strcat(exe, argv0); // add on the binary name...
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if (access(exe, X_OK) != 0) // Not our binary?
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delete[] exe;
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else // matching executable file found on path...this is it.
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{
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retval = new char[strlen(exe) + 1];
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strcpy(retval, exe);
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delete[] exe;
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break;
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}
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start = ptr + 1;
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} while (ptr != NULL);
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delete[] envr;
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}
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delete[] argv0;
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if (retval != NULL)
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{
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char full[MAXPATHLEN];
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realpath(retval, full);
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delete[] retval;
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retval = new char[strlen(full) + 1];
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strcpy(retval, full);
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}
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return(retval);
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}
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// !!! FIXME: cut and paste from Engine.cpp ! --ryan.
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// reverses string
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static void StrRev( char *str) {
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char ctmp;
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char *pch0 = str;
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char *pch1 = str+strlen(str)-1;
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while( pch1>pch0) {
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ctmp = *pch0;
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*pch0 = *pch1;
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*pch1 = ctmp;
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pch0++;
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pch1--;
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}
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}
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// FIXME: This is such a lame hack. --ryan.
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static void calcModExt(char *full, const char *exePath, const char *gamename)
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{
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strcat(full, gamename);
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// bah...duplication from Engine.cpp ...
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char strDirPath[MAX_PATH] = "";
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char strTmpPath[MAX_PATH] = "";
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strncpy(strTmpPath, exePath, sizeof(strTmpPath)-1);
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strDirPath[sizeof(strTmpPath)-1] = 0;
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// remove name from application path
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StrRev(strTmpPath);
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// find last backslash
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char *pstr = strchr( strTmpPath, '/');
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if( pstr==NULL) {
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// not found - path is just "\"
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strcpy( strTmpPath, "/");
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pstr = strTmpPath;
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}
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// remove 'debug' from app path if needed
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if( strnicmp( pstr, "/gubed", 6)==0) pstr += 6;
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if( *pstr == '/') pstr++;
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char *pstrFin = strchr( pstr, '/');
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if( pstrFin==NULL) {
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strcpy( pstr, "/");
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pstrFin = pstr;
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}
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// copy that to the path
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StrRev(pstrFin);
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strncpy( strDirPath, pstrFin, sizeof(strDirPath)-1);
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strDirPath[sizeof(strDirPath)-1] = 0;
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strcat(strDirPath, "/ModExt.txt");
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if (access(strDirPath, F_OK) == 0)
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{
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FILE *in = fopen(strDirPath, "rb");
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int rc = fread(strTmpPath, 1, 30, in);
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if (rc > 0)
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{
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strTmpPath[rc] = '\0';
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strcat(full, strTmpPath);
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}
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}
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strcat(full, "/");
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}
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CUnixFileSystem::CUnixFileSystem(const char *argv0, const char *gamename)
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: exePath(NULL),
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userDir(NULL)
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{
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exePath = calcExePath(argv0);
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if (exePath == NULL)
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{
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exePath = new char[strlen(argv0) + 3];
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strcpy(exePath, "./"); // (*shrug*)
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strcat(exePath, argv0);
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}
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userDir = copyEnvironmentVariable("HOME");
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if (userDir == NULL)
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userDir = getUserDirByUID();
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char full[MAXPATHLEN];
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realpath(userDir, full);
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delete[] userDir;
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if (full[strlen(full) - 1] != '/')
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strcat(full, "/");
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// make sure it ends with a dir separator!
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#if PLATFORM_MACOSX
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strcat(full, "Library/");
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mkdir(full, S_IRWXU); // don't care if this fails. We'll catch it later.
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strcat(full, "Application Support/");
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mkdir(full, S_IRWXU); // don't care if this fails. We'll catch it later.
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strcat(full, "Serious Sam/");
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#else
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strcat(full, ".serious/");
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#endif
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if (!Exists(full)) {
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if (mkdir(full, S_IRWXU) == -1) {
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FatalError("User dir creation failed! (%s)\n", strerror(errno));
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}
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}
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calcModExt(full, exePath, gamename);
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if (!Exists(full)) {
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if (mkdir(full, S_IRWXU) == -1) {
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FatalError("User dir creation failed! (%s)\n", strerror(errno));
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}
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}
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userDir = new char[strlen(full) + 1];
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strcpy(userDir, full);
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}
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CUnixFileSystem::~CUnixFileSystem(void)
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{
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delete[] exePath;
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delete[] userDir;
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}
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void CUnixFileSystem::GetExecutablePath(char *buf, ULONG bufSize)
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{
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buf[bufSize - 1] = '\0'; // just in case.
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strncpy(buf, exePath, bufSize);
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}
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void CUnixFileSystem::GetUserDirectory(char *buf, ULONG bufSize)
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{
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buf[bufSize - 1] = '\0'; // just in case.
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strncpy(buf, userDir, bufSize);
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}
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CDynamicArray<CTString> *CUnixFileSystem::FindFiles(const char *dir,
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const char *wildcard)
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{
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CDynamicArray<CTString> *retval = new CDynamicArray<CTString>;
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DIR *d = opendir(dir);
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if (d != NULL)
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{
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struct dirent *dent;
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while ((dent = readdir(d)) != NULL)
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{
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CTString str(dent->d_name);
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if (str.Matches(wildcard))
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*retval->New() = str;
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}
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closedir(d);
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}
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return(retval);
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}
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// end of UnixFileSystem.cpp ...
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