112 lines
2.6 KiB
C
112 lines
2.6 KiB
C
/* Handle to devil Library */
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#ifdef _WIN32
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#include "extil.h"
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static HMODULE devILhandle;
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#else
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#include <dlfcn.h>
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#include "extil.h"
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#include <libgen.h>
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static void* devILhandle;
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#endif
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#include "org_lwjgl_devil_ILNative.h";
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/*
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* Class: org_lwjgl_devil_ILNative
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* Method: getNativeLibraryVersion
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* Signature: ()I
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*/
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JNIEXPORT jint JNICALL Java_org_lwjgl_devil_ILNative_getNativeLibraryVersion(JNIEnv *env, jclass clazz) {
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return org_lwjgl_devil_ILNative_JNI_VERSION;
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}
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/**
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* Retrieves a function pointer from the devil library
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* @param function Name of function to retrieve
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*/
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static void *NativeGetFunctionPointer(const char *function) {
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#ifdef _WIN32
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return GetProcAddress(devILhandle, function);
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#else
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return dlsym(devILhandle, function);
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#endif
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}
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/**
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* Retrieves a pointer to the named function
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*
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* @param function Name of function
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* @return pointer to named function, or NULL if not found
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*/
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static void* extil_GetProcAddress(const char* function) {
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void *p = NativeGetFunctionPointer(function);
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if (p == NULL) {
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printfDebug("Could not locate symbol %s\n", function);
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}
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return p;
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}
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/**
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* Initializes all functions for class
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*/
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void extil_InitializeClass(JNIEnv *env, jclass clazz, int num_functions, JavaMethodAndExtFunction *functions) {
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ext_InitializeClass(env, clazz, &extil_GetProcAddress, num_functions, functions);
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}
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/**
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* Opens the native library
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*/
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bool extil_Open(JNIEnv *env, jobjectArray ilPaths) {
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jsize pathcount = (*env)->GetArrayLength(env, ilPaths);
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int i;
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jstring path;
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char *path_str;
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printfDebug("Found %d devil paths\n", (int)pathcount);
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for(i=0;i<pathcount;i++) {
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path = (jstring) (*env)->GetObjectArrayElement(env, ilPaths, i);
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path_str = GetStringNativeChars(env, path);
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printfDebug("Testing '%s'\n", path_str);
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#ifdef _WIN32
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devILhandle = LoadLibrary(path_str);
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#else
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char* directoryName = dirname(path_str);
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char* fileName = basename(path_str);
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char* currentDirectory = getwd(NULL);
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if(directoryName != NULL) {
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chdir(directoryName);
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}
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devILhandle = dlopen(fileName, RTLD_LAZY);
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if(devILhandle == NULL) {
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printfDebug("dlopen failure: %s\n\n\n", dlerror());
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}
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chdir(currentDirectory);
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free(currentDirectory);
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#endif
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if (devILhandle != NULL) {
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printfDebug("Found devil at '%s'\n", path_str);
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}
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free(path_str);
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if (devILhandle != NULL) {
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return true;
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}
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}
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throwException(env, "Could not load devil library.");
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return false;
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}
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/**
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* Closes the native library
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*/
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void extil_Close(void) {
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#ifdef _WIN32
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FreeLibrary(devILhandle);
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#else
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if (devILhandle != NULL) {
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dlclose(devILhandle);
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}
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#endif
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devILhandle = NULL;
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}
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