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Demos: Use new format functions.

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asynts 2020-10-07 12:21:32 +02:00 • committed by Andreas Kling
parent d781f3f6b5
commit 560c52989c
6 changed files with 34 additions and 45 deletions
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54
Demos/DynamicLink/LinkDemo/main.cpp
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@ -32,34 +32,32 @@
int main(int argc, char** argv, char** envp)
{
for (int i = 0; i < argc; ++i) {
printf("argv[%d]: %s\n", i, argv[i]);
}
for (int i = 0; i < argc; ++i)
outln("argv[{}]: {}", i, argv[i]);
char** env;
for (env = envp; *env; ++env) {
printf("env: %s\n", *env);
}
for (env = envp; *env; ++env)
outln("env: {}", *env);
for (auxv_t* auxvp = (auxv_t*)++env; auxvp->a_type != AT_NULL; ++auxvp) {
printf("AuxVal: Type=%ld, Val/Ptr=%p\n", auxvp->a_type, auxvp->a_un.a_ptr);
outln("AuxVal: Type={}, Val/Ptr={}", auxvp->a_type, auxvp->a_un.a_ptr);
if (auxvp->a_type == AT_PLATFORM) {
printf(" Platform: %s\n", (char*)auxvp->a_un.a_ptr);
outln(" Platform: {}", (char*)auxvp->a_un.a_ptr);
} else if (auxvp->a_type == AT_EXECFN) {
printf(" Filename: %s\n", (char*)auxvp->a_un.a_ptr);
outln(" Filename: {}", (char*)auxvp->a_un.a_ptr);
} else if (auxvp->a_type == AT_RANDOM) {
auto byte_ptr = (uint8_t*)auxvp->a_un.a_ptr;
printf(" My Random bytes are: ");
for (size_t i = 0; i < 16; ++i) {
printf("0x%2x ", byte_ptr[i]);
}
printf("\n");
outln(" My Random bytes are: ");
for (size_t i = 0; i < 16; ++i)
new_out("{:#02x} ", byte_ptr[i]);
outln();
}
}
void* handle = dlopen("/usr/lib/libDynamicLib.so", RTLD_LAZY | RTLD_GLOBAL);
if (!handle) {
printf("Failed to dlopen! %s\n", dlerror());
warnln("Failed to dlopen! {}", dlerror());
return 1;
}
@ -67,57 +65,57 @@ int main(int argc, char** argv, char** envp)
int* ptr_global = (int*)dlsym(handle, "global_lib_variable");
if (!ptr_global) {
printf("Failed to dlsym for \"global_lib_variable\"! %s\n", dlerror());
warnln("Failed to dlsym for \"global_lib_variable\"! {}", dlerror());
return 2;
}
printf("Found global lib variable address: %p\n", ptr_global);
outln("Found global lib variable address: {}", ptr_global);
printf("Global lib variable is %d\n", *ptr_global);
outln("Global lib variable is {}", *ptr_global);
// Test getting a method from the library and calling it
void (*lib_func)(void) = (void (*)(void))dlsym(handle, "global_lib_function");
printf("Found global lib function address: %p\n", lib_func);
outln("Found global lib function address: {}", lib_func);
if (!lib_func) {
printf("Failed to dlsym for \"global_lib_function\"! %s\n", dlerror());
warnln("Failed to dlsym for \"global_lib_function\"! {}", dlerror());
return 2;
}
lib_func();
printf("I think I called my lib function!\n");
outln("I think I called my lib function!");
// Test getting a method that takes and returns arguments now
const char* (*other_func)(int) = (const char* (*)(int))dlsym(handle, "other_lib_function");
printf("Found other lib function address %p\n", other_func);
outln("Found other lib function address {}", other_func);
if (!other_func) {
printf("Failed to dlsym for \"other_lib_function\"! %s\n", dlerror());
warnln("Failed to dlsym for \"other_lib_function\"! {}", dlerror());
return 2;
}
// Call it twice with different arguments
String formatted_result = other_func(10);
printf("(%d + %d = %d) %s\n", *ptr_global, 10, *ptr_global + 10, formatted_result.characters());
outln("({} + {} = {}) {}", *ptr_global, 10, *ptr_global + 10, formatted_result);
*ptr_global = 17;
formatted_result = other_func(5);
printf("(%d + %d = %d) %s\n", *ptr_global, 5, *ptr_global + 5, formatted_result.characters());
outln("({} + {} = {}) {}", *ptr_global, 5, *ptr_global + 5, formatted_result);
int ret = dlclose(handle);
if (ret < 0) {
printf("Failed to dlclose! %s\n", dlerror());
warnln("Failed to dlclose! {}", dlerror());
return 3;
}
printf("Bye for now!\n");
outln("Bye for now!");
return 0;
}
}