Allow using absolute paths in more places.

src/config.cpp

@@ -697,7 +697,7 @@ const Anope::string &File::GetName() const
 
 Anope::string File::GetPath() const
 {
-	return (this->executable ? "" : Anope::ConfigDir + "/") + this->name;
+	return this->executable ? this->name : Anope::ExpandConfig(this->name);
 }
 
 bool File::IsOpen() const
@@ -708,7 +708,7 @@ bool File::IsOpen() const
 bool File::Open()
 {
 	this->Close();
-	this->fp = (this->executable ? popen(this->name.c_str(), "r") : fopen((Anope::ConfigDir + "/" + this->name).c_str(), "r"));
+	this->fp = (this->executable ? popen(GetPath().c_str(), "r") : fopen(GetPath().c_str(), "r"));
 	return this->fp != NULL;
 }
 

src/init.cpp

@@ -417,12 +417,9 @@ bool Anope::Init(int ac, char **av)
 	}
 
 	Log(LOG_TERMINAL) << "Anope " << Anope::Version() << ", " << Anope::VersionBuildString();
+	Log(LOG_TERMINAL) << "Using configuration file " << Anope::ExpandConfig(ServicesConf.GetName());
 
-#ifdef _WIN32
-	Log(LOG_TERMINAL) << "Using configuration file " << Anope::ConfigDir << "\\" << ServicesConf.GetName();
-#else
-	Log(LOG_TERMINAL) << "Using configuration file " << Anope::ConfigDir << "/" << ServicesConf.GetName();
-
+#ifndef _WIN32
 	/* Fork to background */
 	if (!Anope::NoFork)
 	{

src/logger.cpp

@@ -52,7 +52,7 @@ static inline Anope::string CreateLogName(const Anope::string &file, time_t t =
 	tm *tm = localtime(&t);
 	strftime(timestamp, sizeof(timestamp), "%Y%m%d", tm);
 
-	return Anope::LogDir + "/" + file + "." + timestamp;
+	return Anope::ExpandLog(file + "." + timestamp);
 }
 
 LogFile::LogFile(const Anope::string &name) : filename(name), stream(name.c_str(), std::ios_base::out | std::ios_base::app)

src/misc.cpp

@@ -23,6 +23,7 @@
 #include <climits>
 #include <numeric>
 #include <random>
+#include <filesystem>
 #include <sys/stat.h>
 #include <sys/types.h>
 #ifndef _WIN32
@@ -808,3 +809,26 @@ void Anope::UpdateTime()
 	CurTimeNs = tv.tv_usec * 1000;
 #endif
 }
+
+Anope::string Anope::Expand(const Anope::string& base, const Anope::string& fragment)
+{
+	// The fragment is an absolute path, don't modify it.
+	if (std::filesystem::path(fragment.str()).is_absolute())
+		return fragment;
+
+#ifdef _WIN32
+	static constexpr const char separator = '\\';
+#else
+	static constexpr const char separator = '/';
+#endif
+
+	// The fragment is relative to a home directory, expand that.
+	if (!fragment.compare(0, 2, "~/", 2))
+	{
+		const auto *homedir = getenv("HOME");
+		if (homedir && *homedir)
+			return Anope::printf("%s%c%s", homedir, separator, fragment.c_str() + 2);
+	}
+
+	return Anope::printf("%s%c%s", base.c_str(), separator, fragment.c_str());
+}

src/module.cpp

@@ -46,7 +46,7 @@ Module::Module(const Anope::string &modname, const Anope::string &, ModType modt
 		Anope::string lang;
 		sepstream(language, '.').GetToken(lang);
 
-		if (Anope::IsFile(Anope::LocaleDir + "/" + lang + "/LC_MESSAGES/" + modname + ".mo"))
+		if (Anope::IsFile(Anope::ExpandLocale(lang + "/LC_MESSAGES/" + modname + ".mo")))
 		{
 			if (!bindtextdomain(this->name.c_str(), Anope::LocaleDir.c_str()))
 				Log() << "Error calling bindtextdomain, " << Anope::LastError();

src/modulemanager.cpp

@@ -27,7 +27,7 @@ std::vector<Module *> ModuleManager::EventHandlers[I_SIZE];
 #ifdef _WIN32
 void ModuleManager::CleanupRuntimeDirectory()
 {
-	Anope::string dirbuf = Anope::DataDir + "/runtime";
+	Anope::string dirbuf = Anope::ExpandData("runtime");
 
 	Log(LOG_DEBUG) << "Cleaning out Module run time directory (" << dirbuf << ") - this may take a moment, please wait";
 	try
@@ -55,7 +55,7 @@ void ModuleManager::CleanupRuntimeDirectory()
  */
 static ModuleReturn moduleCopyFile(const Anope::string &name, Anope::string &output)
 {
-	Anope::string input = Anope::ModuleDir + "/modules/" + name + DLL_EXT;
+	const auto input = Anope::ExpandModule("modules/" + name + DLL_EXT);
 
 	struct stat s;
 	if (stat(input.c_str(), &s) == -1)
@@ -133,7 +133,7 @@ ModuleReturn ModuleManager::LoadModule(const Anope::string &modname, User *u)
 
 #ifdef _WIN32
 	/* Generate the filename for the temporary copy of the module */
-	Anope::string pbuf = Anope::DataDir + "/runtime/" + modname + DLL_EXT ".XXXXXX";
+	const auto pbuf = Anope::ExpandData("runtime/" + modname + DLL_EXT ".XXXXXX");
 
 	/* Don't skip return value checking! -GD */
 	ModuleReturn ret = moduleCopyFile(modname, pbuf);
@@ -146,7 +146,7 @@ ModuleReturn ModuleManager::LoadModule(const Anope::string &modname, User *u)
 		return ret;
 	}
 #else
-	Anope::string pbuf = Anope::ModuleDir + "/modules/" + modname + DLL_EXT;
+	const auto pbuf = Anope::ExpandModule("modules/" + modname + DLL_EXT);
 #endif
 
 	dlerror();