[Performous-commit] Lasse Karkkainen : Add a function for finding where the executable is

[Tapio V. <aa...@us...>]

Module: performous
Branch: dance
Commit: 3be2d201398b4e6baba09495c66c17bfa07ab84c

Author: Lasse Karkkainen <tro...@tr...>
Date:   Tue Nov  3 04:13:27 2009 +0200

Add a function for finding where the executable is

---

 game/selfpath.cc |   52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 game/selfpath.hh |    7 +++++++
 2 files changed, 59 insertions(+), 0 deletions(-)

diff --git a/game/selfpath.cc b/game/selfpath.cc
new file mode 100644
index 0000000..69cfca3
--- /dev/null
+++ b/game/selfpath.cc
@@ -0,0 +1,52 @@
+#include "selfpath.hh"
+
+#if defined(_WIN32)
+#include <windows.h>
+boost::filesystem::path selfpath() {
+	char buf[1024];
+	DWORD ret = GetModuleFileName(NULL, buf, sizeof(buf));
+	if (ret == 0 || ret == sizeof(buf)) return boost::filesystem::path();
+	return buf;
+}
+#elif defined(__APPLE__)  // Not tested
+#include <mach-o/dyld.h>
+boost::filesystem::path selfpath() {
+	char buf[1024];
+	uint32_t size = sizeof(buf);
+	int ret = _NSGetExecutablePath(buf, &size);
+	if (ret != 0) return boost::filesystem::path();
+	return buf;
+}
+#elif defined(sun) || defined(__sun)
+#include <stdlib.h>
+boost::filesystem::path selfpath() {
+	return getexecname();
+}
+#elif defined(__FreeBSD__)
+#include <sys/sysctl.h>
+boost::filesystem::path selfpath() {
+	int mib[4];
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_PROC;
+	mib[2] = KERN_PROC_PATHNAME;
+	mib[3] = -1;
+	char buf[1024];
+	size_t size = sizeof(buf);
+	sysctl(mib, 4, buf, &size, NULL, 0);
+	if (size == 0 || size == sizeof(buf)) return boost::filesystem::path();
+	return std::string(buf, size);
+}
+#elif defined(__linux__)
+#include <unistd.h>
+boost::filesystem::path selfpath() {
+	char buf[1024];
+	ssize_t ret = readlink("/proc/self/exe", buf, sizeof(buf));
+	if (ret == 0 || ret == sizeof(buf)) return boost::filesystem::path();
+	return std::string(buf, ret);
+}
+#else
+boost::filesystem::path selfpath() {
+	return boost::filesystem::path();
+}
+#endif
+
diff --git a/game/selfpath.hh b/game/selfpath.hh
new file mode 100644
index 0000000..5acbd12
--- /dev/null
+++ b/game/selfpath.hh
@@ -0,0 +1,7 @@
+#pragma once
+#include <boost/filesystem.hpp>
+
+/// Get the current executable name with path. Returns empty path if the name
+/// cannot be found. May return absolute or relative paths.
+boost::filesystem::path selfpath();
+