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engine: platform: add Platform_LibraryExists and implement it for iOS and generally for everything else with FS_FileExists

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This commit is contained in:
Alibek Omarov
2026-04-03 04:01:29 +05:00
parent 8e450d869b
commit b67b261ddb
4 changed files with 66 additions and 32 deletions
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2
engine/common/common.h
View File

@@ -37,8 +37,6 @@ GNU General Public License for more details.
#include "com_model.h"
#include "com_strings.h"
#include "crtlib.h"
#define FSCALLBACK_OVERRIDE_MALLOC_LIKE
#include "fscallback.h"
#include "cvar.h"
#include "con_nprint.h"
#include "crclib.h"

80
engine/platform/ios/lib_ios.c
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@@ -13,63 +13,83 @@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
#include <string.h>
#include <unistd.h>
#include <SDL.h>
#include <dlfcn.h>
#include <sys/stat.h>
#include "crtlib.h"
#include "library.h"
#include "platform/ios/lib_ios.h"
#include "common.h"
#define EXT_LENGTH 5
const char *g_szLibrarySuffix;
static void *IOS_LoadLibraryInternal( const char *dllname )
{
void *pHandle;
string errorstring = "";
char path[MAX_SYSPATH];
Q_snprintf( path, MAX_SYSPATH, "%s%s", SDL_GetBasePath(), dllname );
Q_snprintf( path, sizeof( path ), "%s%s", SDL_GetBasePath(), dllname );
pHandle = dlopen( path, RTLD_LAZY );
if( !pHandle )
{
COM_PushLibraryError(errorstring);
COM_PushLibraryError(dlerror());
}
COM_PushLibraryError(dlerror( ));
return pHandle;
}
const char *g_szLibrarySuffix;
static qboolean IOS_LibraryExistsInternal( const char *name )
{
struct stat buf;
char path[MAX_SYSPATH];
Q_snprintf( path, sizeof( path ), "%s%s", SDL_GetBasePath(), name );
return stat( path, &buf ) == 0;
}
static const char *IOS_GetLibraryPostfix( void )
{
if( g_szLibrarySuffix )
return g_szLibrarySuffix;
return Q_strcmp( host.default_gamedir, FS_Gamedir( )) ? FS_Gamedir( ) : "";
}
static void IOS_PrepareGameLibraryPath( const char *dllname, char *out, size_t outsize )
{
string strippedname;
Q_strncpy( strippedname, dllname, sizeof( strippedname ));
COM_StripExtension( strippedname );
Q_snprintf( out, outsize, "%s_%s.dylib", strippedname, IOS_GetLibraryPostfix( ));
}
void *IOS_LoadLibrary( const char *dllname )
{
//Immediately load if the library is filesystem_stdio.dylib or we will crash when accessing gamedir
if ( !Q_strcmp( dllname, "filesystem_stdio.dylib" ) )
{
// filesystem_stdio is a special case, as engine won't work correctly without it
// but it's always located at known path
if( !Q_strcmp( dllname, "filesystem_stdio.dylib" ))
return IOS_LoadLibraryInternal( dllname );
}
string name;
string strippedname;
const char *postfix = g_szLibrarySuffix;
char *pHandle;
if( !postfix )
{
if ( Q_strcmp(FS_Gamedir(), host.default_gamedir ) )
{
postfix = FS_Gamedir( );
}
else postfix = "";
}
Q_strncpy( strippedname, dllname, sizeof( strippedname ) );
COM_StripExtension(strippedname);
Q_snprintf( name, MAX_STRING, "%s_%s.dylib", strippedname, postfix );
IOS_PrepareGameLibraryPath( dllname, name, sizeof( name ));
pHandle = IOS_LoadLibraryInternal( name );
if( pHandle )
return pHandle;
if( !pHandle )
pHandle = IOS_LoadLibraryInternal( dllname );
return IOS_LoadLibraryInternal( dllname );
return pHandle;
}
qboolean IOS_LibraryExists( const char *dllname )
{
string name;
IOS_PrepareGameLibraryPath( dllname, name, sizeof( name ));
return IOS_LibraryExistsInternal( name ) || IOS_LibraryExistsInternal( dllname );
}

1
engine/platform/ios/lib_ios.h
View File

@@ -20,6 +20,7 @@ GNU General Public License for more details.
#define Platform_POSIX_LoadLibrary( x ) IOS_LoadLibrary(( x ))
void *IOS_LoadLibrary( const char *dllname );
qboolean IOS_LibraryExists( const char *name );
#endif // IOS_LIB_H
#endif // TARGET_OS_IPHONE

15
engine/platform/platform.h
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@@ -18,6 +18,8 @@ GNU General Public License for more details.
#define PLATFORM_H
#include <errno.h>
#define FSCALLBACK_OVERRIDE_MALLOC_LIKE
#include "fscallback.h"
#include "common.h"
#include "system.h"
#include "defaults.h"
@@ -43,6 +45,7 @@ qboolean Platform_DebuggerPresent( void );
int IOS_GetArgs( char ***argv );
const char *IOS_GetDocsDir( void );
void IOS_LaunchDialog( void );
#include "platform/ios/lib_ios.h"
#endif // TARGET_OS_IOS
#if XASH_WIN32 || XASH_LINUX
@@ -207,6 +210,18 @@ static inline void Sys_RestoreCrashHandler( void )
}
#endif
static inline qboolean Platform_LibraryExists( const char *name, qboolean gamedironly )
{
#if XASH_IOS
return IOS_LibraryExists( name );
#elif XASH_ANDROID
// sorry, unimplemented
return false;
#else
return g_fsapi.FileExists( name, gamedironly );
#endif
}
/*
==============================================================================