diff --git a/dependencies/CMakeLists.txt b/dependencies/CMakeLists.txt index d228b03..d570e54 100644 --- a/dependencies/CMakeLists.txt +++ b/dependencies/CMakeLists.txt @@ -74,3 +74,4 @@ find_package(Gettext REQUIRED) add_subdirectory(catch2) add_subdirectory(nlohmann_json) +add_subdirectory(whereami) diff --git a/dependencies/whereami/CMakeLists.txt b/dependencies/whereami/CMakeLists.txt new file mode 100644 index 0000000..85b563a --- /dev/null +++ b/dependencies/whereami/CMakeLists.txt @@ -0,0 +1,18 @@ +############################################################################### +# License: BSD Zero Clause License file +# Copyright: +# (C) 2022 Alexander Shaduri +############################################################################### + +add_library(whereami STATIC) + +target_sources(whereami PRIVATE + whereami/src/whereami.cpp + whereami/src/whereami.h +) + +target_include_directories(whereami + PUBLIC + "${CMAKE_CURRENT_SOURCE_DIR}/whereami/src" +) + diff --git a/dependencies/whereami/version.txt b/dependencies/whereami/version.txt new file mode 100644 index 0000000..0d218ae --- /dev/null +++ b/dependencies/whereami/version.txt @@ -0,0 +1,5 @@ +Where Am I? +git master 2022-01-15 +https://github.com/gpakosz/whereami + +whereami.c renamed to whereami.cpp diff --git a/dependencies/whereami/whereami/LICENSE.MIT b/dependencies/whereami/whereami/LICENSE.MIT new file mode 100644 index 0000000..5369786 --- /dev/null +++ b/dependencies/whereami/whereami/LICENSE.MIT @@ -0,0 +1,18 @@ +Copyright Gregory Pakosz + +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of +the Software, and to permit persons to whom the Software is furnished to do so, +subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS +FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR +COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER +IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/dependencies/whereami/whereami/LICENSE.WTFPLv2 b/dependencies/whereami/whereami/LICENSE.WTFPLv2 new file mode 100644 index 0000000..ad8b9ab --- /dev/null +++ b/dependencies/whereami/whereami/LICENSE.WTFPLv2 @@ -0,0 +1,25 @@ +-------------------------------------------------------------------------------- + DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE + Version 2, December 2004 + + Copyright (C) 2004 Sam Hocevar + + Everyone is permitted to copy and distribute verbatim or modified + copies of this license document, and changing it is allowed as long + as the name is changed. + + DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. You just DO WHAT THE FUCK YOU WANT TO. + 1. Bla bla bla + 2. Montesqieu et camembert, vive la France, zut alors! + +-------------------------------------------------------------------------------- + +WTFPLv2 is very permissive, see http://www.wtfpl.net/faq/ + +However, if this WTFPLV2 is REALLY a blocker and is the reason you can't use +this project, contact me and I'll dual license it. + +-------------------------------------------------------------------------------- diff --git a/dependencies/whereami/whereami/README.md b/dependencies/whereami/whereami/README.md new file mode 100644 index 0000000..6a179f4 --- /dev/null +++ b/dependencies/whereami/whereami/README.md @@ -0,0 +1,123 @@ +# Where Am I? + +A drop-in two files library to locate the current executable and the current +module on the file system. + +Supported platforms: + +- Windows +- Linux +- Mac +- iOS +- Android +- QNX Neutrino +- FreeBSD +- NetBSD +- DragonFly BSD +- SunOS +- OpenBSD + +Just drop `whereami.h` and `whereami.c` into your build and get started. (see +also [customizing compilation]) + +[customizing compilation]: #customizing-compilation + +-------------------------------------------------------------------------------- + +## Usage + +- `wai_getExecutablePath()` returns the path of the enclosing executable +- `wai_getModulePath()` returns the path of the enclosing module + +Example usage: + +- first call `int length = wai_getExecutablePath(NULL, 0, NULL);` to retrieve + the length of the path +- allocate the destination buffer with `path = (char*)malloc(length + 1);` +- call `wai_getExecutablePath(path, length, &dirname_length)` again to retrieve + the path +- add a terminal `NUL` character with `path[length] = '\0';` + +Here is the output of the example: + + $ make -j -C _gnu-make + $ cp ./bin/mac-x86_64/library.dylib /tmp/ + $ ./bin/mac-x86_64/executable --load-library=/tmp/library.dylib + + executable path: /Users/gregory/Projects/whereami/bin/mac-x86_64/executable + dirname: /Users/gregory/Projects/whereami/bin/mac-x86_64 + basename: executable + module path: /Users/gregory/Projects/whereami/bin/mac-x86_64/executable + dirname: /Users/gregory/Projects/whereami/bin/mac-x86_64 + basename: executable + + library loaded + executable path: /Users/gregory/Projects/whereami/bin/mac-x86_64/executable + dirname: /Users/gregory/Projects/whereami/bin/mac-x86_64 + basename: executable + module path: /private/tmp/library.dylib + dirname: /private/tmp + basename: library.dylib + library unloaded + +-------------------------------------------------------------------------------- + +## Customizing compilation + +You can customize the library's behavior by defining the following macros: + +- `WAI_FUNCSPEC` +- `WAI_PREFIX` +- `WAI_MALLOC` +- `WAI_REALLOC` +- `WAI_FREE` + +## Compiling for Windows + +There is a Visual Studio 2015 solution in the `_win-vs14/` folder. + +## Compiling for Linux or Mac + +There is a GNU Make 3.81 `MakeFile` in the `_gnu-make/` folder: + + $ make -j -C _gnu-make/ + +## Compiling for Mac + +See above if you want to compile from command line. Otherwise there is an Xcode +project located in the `_mac-xcode/` folder. + +## Compiling for iOS + +There is an Xcode project located in the `_ios-xcode/` folder. + +If you prefer compiling from command line and deploying to a jailbroken device +through SSH, use: + + $ make -j -C _gnu-make/ binsubdir=ios CC="$(xcrun --sdk iphoneos --find clang) -isysroot $(xcrun --sdk iphoneos --show-sdk-path) -arch armv7 -arch armv7s -arch arm64" postbuild="codesign -s 'iPhone Developer'" + +## Compiling for Android + +You will have to install the Android NDK, and point the `$NDK_ROOT` environment +variable to the NDK path: e.g. `export NDK_ROOT=/opt/android-ndk` (without a +trailing `/` character). + +Next, the easy way is to make a standalone Android toolchain with the following +command: + + $ $NDK_ROOT/build/tools/make_standalone_toolchain.py --arch=arm64 --api 21 --install-dir=/tmp/android-toolchain + +Now you can compile the example by running: + + $ make -j -C _gnu-make/ platform=android architecture=arm64 CC=/tmp/android-toolchain/bin/aarch64-linux-android-gcc CXX=/tmp/android-toolchain/bin/aarch64-linux-android-g++ + +Loading page aligned library straight from APKs is supported. To test, use the +following: + + $ zip -Z store app bin/android/library.so + $ zipalign -v -f -p 4 ./app.zip ./app.apk + +Then copy `bin/android/executable` and `app.apk` to your Android device and +there launch: + + $ ./executable --load-library=$PWD/app.apk!/bin/android/library.so diff --git a/dependencies/whereami/whereami/src/whereami.cpp b/dependencies/whereami/whereami/src/whereami.cpp new file mode 100644 index 0000000..390ea5f --- /dev/null +++ b/dependencies/whereami/whereami/src/whereami.cpp @@ -0,0 +1,796 @@ +// (‑●‑●)> dual licensed under the WTFPL v2 and MIT licenses +// without any warranty. +// by Gregory Pakosz (@gpakosz) +// https://github.com/gpakosz/whereami + +// in case you want to #include "whereami.c" in a larger compilation unit +#if !defined(WHEREAMI_H) +#include +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +#if !defined(WAI_MALLOC) || !defined(WAI_FREE) || !defined(WAI_REALLOC) +#include +#endif + +#if !defined(WAI_MALLOC) +#define WAI_MALLOC(size) malloc(size) +#endif + +#if !defined(WAI_FREE) +#define WAI_FREE(p) free(p) +#endif + +#if !defined(WAI_REALLOC) +#define WAI_REALLOC(p, size) realloc(p, size) +#endif + +#ifndef WAI_NOINLINE +#if defined(_MSC_VER) +#define WAI_NOINLINE __declspec(noinline) +#elif defined(__GNUC__) +#define WAI_NOINLINE __attribute__((noinline)) +#else +#error unsupported compiler +#endif +#endif + +#if defined(_MSC_VER) +#define WAI_RETURN_ADDRESS() _ReturnAddress() +#elif defined(__GNUC__) +#define WAI_RETURN_ADDRESS() __builtin_extract_return_addr(__builtin_return_address(0)) +#else +#error unsupported compiler +#endif + +#if defined(_WIN32) + +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN +#endif +#if defined(_MSC_VER) +#pragma warning(push, 3) +#endif +#include +#include +#if defined(_MSC_VER) +#pragma warning(pop) +#endif +#include + +static int WAI_PREFIX(getModulePath_)(HMODULE module, char* out, int capacity, int* dirname_length) +{ + wchar_t buffer1[MAX_PATH]; + wchar_t buffer2[MAX_PATH]; + wchar_t* path = NULL; + int length = -1; + bool ok; + + for (ok = false; !ok; ok = true) + { + DWORD size; + int length_, length__; + + size = GetModuleFileNameW(module, buffer1, sizeof(buffer1) / sizeof(buffer1[0])); + + if (size == 0) + break; + else if (size == (DWORD)(sizeof(buffer1) / sizeof(buffer1[0]))) + { + DWORD size_ = size; + do + { + wchar_t* path_; + + path_ = (wchar_t*)WAI_REALLOC(path, sizeof(wchar_t) * size_ * 2); + if (!path_) + break; + size_ *= 2; + path = path_; + size = GetModuleFileNameW(module, path, size_); + } + while (size == size_); + + if (size == size_) + break; + } + else + path = buffer1; + + if (!_wfullpath(buffer2, path, MAX_PATH)) + break; + length_ = (int)wcslen(buffer2); + length__ = WideCharToMultiByte(CP_UTF8, 0, buffer2, length_ , out, capacity, NULL, NULL); + + if (length__ == 0) + length__ = WideCharToMultiByte(CP_UTF8, 0, buffer2, length_, NULL, 0, NULL, NULL); + if (length__ == 0) + break; + + if (length__ <= capacity && dirname_length) + { + int i; + + for (i = length__ - 1; i >= 0; --i) + { + if (out[i] == '\\') + { + *dirname_length = i; + break; + } + } + } + + length = length__; + } + + if (path != buffer1) + WAI_FREE(path); + + return ok ? length : -1; +} + +WAI_NOINLINE WAI_FUNCSPEC +int WAI_PREFIX(getExecutablePath)(char* out, int capacity, int* dirname_length) +{ + return WAI_PREFIX(getModulePath_)(NULL, out, capacity, dirname_length); +} + +WAI_NOINLINE WAI_FUNCSPEC +int WAI_PREFIX(getModulePath)(char* out, int capacity, int* dirname_length) +{ + HMODULE module; + int length = -1; + +#if defined(_MSC_VER) +#pragma warning(push) +#pragma warning(disable: 4054) +#endif + if (GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, (LPCTSTR)WAI_RETURN_ADDRESS(), &module)) +#if defined(_MSC_VER) +#pragma warning(pop) +#endif + { + length = WAI_PREFIX(getModulePath_)(module, out, capacity, dirname_length); + } + + return length; +} + +#elif defined(__linux__) || defined(__CYGWIN__) || defined(__sun) || defined(WAI_USE_PROC_SELF_EXE) + +#include +#include +#include +#if defined(__linux__) +#include +#else +#include +#endif +#ifndef __STDC_FORMAT_MACROS +#define __STDC_FORMAT_MACROS +#endif +#include +#include + +#if !defined(WAI_PROC_SELF_EXE) +#if defined(__sun) +#define WAI_PROC_SELF_EXE "/proc/self/path/a.out" +#else +#define WAI_PROC_SELF_EXE "/proc/self/exe" +#endif +#endif + +WAI_FUNCSPEC +int WAI_PREFIX(getExecutablePath)(char* out, int capacity, int* dirname_length) +{ + char buffer[PATH_MAX]; + char* resolved = NULL; + int length = -1; + bool ok; + + for (ok = false; !ok; ok = true) + { + resolved = realpath(WAI_PROC_SELF_EXE, buffer); + if (!resolved) + break; + + length = (int)strlen(resolved); + if (length <= capacity) + { + memcpy(out, resolved, length); + + if (dirname_length) + { + int i; + + for (i = length - 1; i >= 0; --i) + { + if (out[i] == '/') + { + *dirname_length = i; + break; + } + } + } + } + } + + return ok ? length : -1; +} + +#if !defined(WAI_PROC_SELF_MAPS_RETRY) +#define WAI_PROC_SELF_MAPS_RETRY 5 +#endif + +#if !defined(WAI_PROC_SELF_MAPS) +#if defined(__sun) +#define WAI_PROC_SELF_MAPS "/proc/self/map" +#else +#define WAI_PROC_SELF_MAPS "/proc/self/maps" +#endif +#endif + +#if defined(__ANDROID__) || defined(ANDROID) +#include +#include +#include +#endif +#include + +WAI_NOINLINE WAI_FUNCSPEC +int WAI_PREFIX(getModulePath)(char* out, int capacity, int* dirname_length) +{ + int length = -1; + FILE* maps = NULL; + + for (int r = 0; r < WAI_PROC_SELF_MAPS_RETRY; ++r) + { + maps = fopen(WAI_PROC_SELF_MAPS, "r"); + if (!maps) + break; + + for (;;) + { + char buffer[PATH_MAX < 1024 ? 1024 : PATH_MAX]; + uint64_t low, high; + char perms[5]; + uint64_t offset; + uint32_t major, minor; + char path[PATH_MAX]; + uint32_t inode; + + if (!fgets(buffer, sizeof(buffer), maps)) + break; + + if (sscanf(buffer, "%" PRIx64 "-%" PRIx64 " %s %" PRIx64 " %x:%x %u %s\n", &low, &high, perms, &offset, &major, &minor, &inode, path) == 8) + { + uint64_t addr = (uintptr_t)WAI_RETURN_ADDRESS(); + if (low <= addr && addr <= high) + { + char* resolved; + + resolved = realpath(path, buffer); + if (!resolved) + break; + + length = (int)strlen(resolved); +#if defined(__ANDROID__) || defined(ANDROID) + if (length > 4 + &&buffer[length - 1] == 'k' + &&buffer[length - 2] == 'p' + &&buffer[length - 3] == 'a' + &&buffer[length - 4] == '.') + { + int fd = open(path, O_RDONLY); + if (fd == -1) + { + length = -1; // retry + break; + } + + char* begin = (char*)mmap(0, offset, PROT_READ, MAP_SHARED, fd, 0); + if (begin == MAP_FAILED) + { + close(fd); + length = -1; // retry + break; + } + + char* p = begin + offset - 30; // minimum size of local file header + while (p >= begin) // scan backwards + { + if (*((uint32_t*)p) == 0x04034b50UL) // local file header signature found + { + uint16_t length_ = *((uint16_t*)(p + 26)); + + if (length + 2 + length_ < (int)sizeof(buffer)) + { + memcpy(&buffer[length], "!/", 2); + memcpy(&buffer[length + 2], p + 30, length_); + length += 2 + length_; + } + + break; + } + + --p; + } + + munmap(begin, offset); + close(fd); + } +#endif + if (length <= capacity) + { + memcpy(out, resolved, length); + + if (dirname_length) + { + int i; + + for (i = length - 1; i >= 0; --i) + { + if (out[i] == '/') + { + *dirname_length = i; + break; + } + } + } + } + + break; + } + } + } + + fclose(maps); + maps = NULL; + + if (length != -1) + break; + } + + return length; +} + +#elif defined(__APPLE__) + +#define _DARWIN_BETTER_REALPATH +#include +#include +#include +#include +#include +#include + +WAI_FUNCSPEC +int WAI_PREFIX(getExecutablePath)(char* out, int capacity, int* dirname_length) +{ + char buffer1[PATH_MAX]; + char buffer2[PATH_MAX]; + char* path = buffer1; + char* resolved = NULL; + int length = -1; + bool ok; + + for (ok = false; !ok; ok = true) + { + uint32_t size = (uint32_t)sizeof(buffer1); + if (_NSGetExecutablePath(path, &size) == -1) + { + path = (char*)WAI_MALLOC(size); + if (!_NSGetExecutablePath(path, &size)) + break; + } + + resolved = realpath(path, buffer2); + if (!resolved) + break; + + length = (int)strlen(resolved); + if (length <= capacity) + { + memcpy(out, resolved, length); + + if (dirname_length) + { + int i; + + for (i = length - 1; i >= 0; --i) + { + if (out[i] == '/') + { + *dirname_length = i; + break; + } + } + } + } + } + + if (path != buffer1) + WAI_FREE(path); + + return ok ? length : -1; +} + +WAI_NOINLINE WAI_FUNCSPEC +int WAI_PREFIX(getModulePath)(char* out, int capacity, int* dirname_length) +{ + char buffer[PATH_MAX]; + char* resolved = NULL; + int length = -1; + + for(;;) + { + Dl_info info; + + if (dladdr(WAI_RETURN_ADDRESS(), &info)) + { + resolved = realpath(info.dli_fname, buffer); + if (!resolved) + break; + + length = (int)strlen(resolved); + if (length <= capacity) + { + memcpy(out, resolved, length); + + if (dirname_length) + { + int i; + + for (i = length - 1; i >= 0; --i) + { + if (out[i] == '/') + { + *dirname_length = i; + break; + } + } + } + } + } + + break; + } + + return length; +} + +#elif defined(__QNXNTO__) + +#include +#include +#include +#include +#include +#include + +#if !defined(WAI_PROC_SELF_EXE) +#define WAI_PROC_SELF_EXE "/proc/self/exefile" +#endif + +WAI_FUNCSPEC +int WAI_PREFIX(getExecutablePath)(char* out, int capacity, int* dirname_length) +{ + char buffer1[PATH_MAX]; + char buffer2[PATH_MAX]; + char* resolved = NULL; + FILE* self_exe = NULL; + int length = -1; + bool ok; + + for (ok = false; !ok; ok = true) + { + self_exe = fopen(WAI_PROC_SELF_EXE, "r"); + if (!self_exe) + break; + + if (!fgets(buffer1, sizeof(buffer1), self_exe)) + break; + + resolved = realpath(buffer1, buffer2); + if (!resolved) + break; + + length = (int)strlen(resolved); + if (length <= capacity) + { + memcpy(out, resolved, length); + + if (dirname_length) + { + int i; + + for (i = length - 1; i >= 0; --i) + { + if (out[i] == '/') + { + *dirname_length = i; + break; + } + } + } + } + } + + fclose(self_exe); + + return ok ? length : -1; +} + +WAI_FUNCSPEC +int WAI_PREFIX(getModulePath)(char* out, int capacity, int* dirname_length) +{ + char buffer[PATH_MAX]; + char* resolved = NULL; + int length = -1; + + for(;;) + { + Dl_info info; + + if (dladdr(WAI_RETURN_ADDRESS(), &info)) + { + resolved = realpath(info.dli_fname, buffer); + if (!resolved) + break; + + length = (int)strlen(resolved); + if (length <= capacity) + { + memcpy(out, resolved, length); + + if (dirname_length) + { + int i; + + for (i = length - 1; i >= 0; --i) + { + if (out[i] == '/') + { + *dirname_length = i; + break; + } + } + } + } + } + + break; + } + + return length; +} + +#elif defined(__DragonFly__) || defined(__FreeBSD__) || \ + defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) + +#include +#include +#include +#include +#include +#include +#include + +#if defined(__OpenBSD__) + +#include + +WAI_FUNCSPEC +int WAI_PREFIX(getExecutablePath)(char* out, int capacity, int* dirname_length) +{ + char buffer1[4096]; + char buffer2[PATH_MAX]; + char buffer3[PATH_MAX]; + char** argv = (char**)buffer1; + char* resolved = NULL; + int length = -1; + bool ok; + + for (ok = false; !ok; ok = true) + { + int mib[4] = { CTL_KERN, KERN_PROC_ARGS, getpid(), KERN_PROC_ARGV }; + size_t size; + + if (sysctl(mib, 4, NULL, &size, NULL, 0) != 0) + break; + + if (size > sizeof(buffer1)) + { + argv = (char**)WAI_MALLOC(size); + if (!argv) + break; + } + + if (sysctl(mib, 4, argv, &size, NULL, 0) != 0) + break; + + if (strchr(argv[0], '/')) + { + resolved = realpath(argv[0], buffer2); + if (!resolved) + break; + } + else + { + const char* PATH = getenv("PATH"); + if (!PATH) + break; + + size_t argv0_length = strlen(argv[0]); + + const char* begin = PATH; + while (1) + { + const char* separator = strchr(begin, ':'); + const char* end = separator ? separator : begin + strlen(begin); + + if (end - begin > 0) + { + if (*(end -1) == '/') + --end; + + if (((end - begin) + 1 + argv0_length + 1) <= sizeof(buffer2)) + { + memcpy(buffer2, begin, end - begin); + buffer2[end - begin] = '/'; + memcpy(buffer2 + (end - begin) + 1, argv[0], argv0_length + 1); + + resolved = realpath(buffer2, buffer3); + if (resolved) + break; + } + } + + if (!separator) + break; + + begin = ++separator; + } + + if (!resolved) + break; + } + + length = (int)strlen(resolved); + if (length <= capacity) + { + memcpy(out, resolved, length); + + if (dirname_length) + { + int i; + + for (i = length - 1; i >= 0; --i) + { + if (out[i] == '/') + { + *dirname_length = i; + break; + } + } + } + } + } + + if (argv != (char**)buffer1) + WAI_FREE(argv); + + return ok ? length : -1; +} + +#else + +WAI_FUNCSPEC +int WAI_PREFIX(getExecutablePath)(char* out, int capacity, int* dirname_length) +{ + char buffer1[PATH_MAX]; + char buffer2[PATH_MAX]; + char* path = buffer1; + char* resolved = NULL; + int length = -1; + bool ok; + + for (ok = false; !ok; ok = true) + { +#if defined(__NetBSD__) + int mib[4] = { CTL_KERN, KERN_PROC_ARGS, -1, KERN_PROC_PATHNAME }; +#else + int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 }; +#endif + size_t size = sizeof(buffer1); + + if (sysctl(mib, 4, path, &size, NULL, 0) != 0) + break; + + resolved = realpath(path, buffer2); + if (!resolved) + break; + + length = (int)strlen(resolved); + if (length <= capacity) + { + memcpy(out, resolved, length); + + if (dirname_length) + { + int i; + + for (i = length - 1; i >= 0; --i) + { + if (out[i] == '/') + { + *dirname_length = i; + break; + } + } + } + } + } + + return ok ? length : -1; +} + +#endif + +WAI_NOINLINE WAI_FUNCSPEC +int WAI_PREFIX(getModulePath)(char* out, int capacity, int* dirname_length) +{ + char buffer[PATH_MAX]; + char* resolved = NULL; + int length = -1; + + for(;;) + { + Dl_info info; + + if (dladdr(WAI_RETURN_ADDRESS(), &info)) + { + resolved = realpath(info.dli_fname, buffer); + if (!resolved) + break; + + length = (int)strlen(resolved); + if (length <= capacity) + { + memcpy(out, resolved, length); + + if (dirname_length) + { + int i; + + for (i = length - 1; i >= 0; --i) + { + if (out[i] == '/') + { + *dirname_length = i; + break; + } + } + } + } + } + + break; + } + + return length; +} + +#else + +#error unsupported platform + +#endif + +#ifdef __cplusplus +} +#endif diff --git a/dependencies/whereami/whereami/src/whereami.h b/dependencies/whereami/whereami/src/whereami.h new file mode 100644 index 0000000..670db54 --- /dev/null +++ b/dependencies/whereami/whereami/src/whereami.h @@ -0,0 +1,67 @@ +// (‑●‑●)> dual licensed under the WTFPL v2 and MIT licenses +// without any warranty. +// by Gregory Pakosz (@gpakosz) +// https://github.com/gpakosz/whereami + +#ifndef WHEREAMI_H +#define WHEREAMI_H + +#ifdef __cplusplus +extern "C" { +#endif + +#ifndef WAI_FUNCSPEC + #define WAI_FUNCSPEC +#endif +#ifndef WAI_PREFIX +#define WAI_PREFIX(function) wai_##function +#endif + +/** + * Returns the path to the current executable. + * + * Usage: + * - first call `int length = wai_getExecutablePath(NULL, 0, NULL);` to + * retrieve the length of the path + * - allocate the destination buffer with `path = (char*)malloc(length + 1);` + * - call `wai_getExecutablePath(path, length, NULL)` again to retrieve the + * path + * - add a terminal NUL character with `path[length] = '\0';` + * + * @param out destination buffer, optional + * @param capacity destination buffer capacity + * @param dirname_length optional recipient for the length of the dirname part + * of the path. + * + * @return the length of the executable path on success (without a terminal NUL + * character), otherwise `-1` + */ +WAI_FUNCSPEC +int WAI_PREFIX(getExecutablePath)(char* out, int capacity, int* dirname_length); + +/** + * Returns the path to the current module + * + * Usage: + * - first call `int length = wai_getModulePath(NULL, 0, NULL);` to retrieve + * the length of the path + * - allocate the destination buffer with `path = (char*)malloc(length + 1);` + * - call `wai_getModulePath(path, length, NULL)` again to retrieve the path + * - add a terminal NUL character with `path[length] = '\0';` + * + * @param out destination buffer, optional + * @param capacity destination buffer capacity + * @param dirname_length optional recipient for the length of the dirname part + * of the path. + * + * @return the length of the module path on success (without a terminal NUL + * character), otherwise `-1` + */ +WAI_FUNCSPEC +int WAI_PREFIX(getModulePath)(char* out, int capacity, int* dirname_length); + +#ifdef __cplusplus +} +#endif + +#endif // #ifndef WHEREAMI_H