Mercurial > projects > ldc
view gen/configfile.cpp @ 1650:40bd4a0d4870
Update to work with LLVM 2.7.
Removed use of dyn_cast, llvm no compiles
without exceptions and rtti by
default. We do need exceptions for the libconfig stuff, but rtti isn't
necessary (anymore).
Debug info needs to be rewritten, as in LLVM 2.7 the format has
completely changed. To have something to look at while rewriting, the
old code has been wrapped inside #ifndef DISABLE_DEBUG_INFO , this means
that you have to define this to compile at the moment.
Updated tango 0.99.9 patch to include updated EH runtime code, which is
needed for LLVM 2.7 as well.
author | Tomas Lindquist Olsen |
---|---|
date | Wed, 19 May 2010 12:42:32 +0200 |
parents | ee6b20e7aedb |
children |
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#include <iostream> #include <string> #include <cassert> #include <cstring> #include "llvm/System/Path.h" #include "libconfig.h++" #include "gen/configfile.h" #include "mars.h" namespace sys = llvm::sys; ConfigFile::ConfigFile() { cfg = new libconfig::Config; } ConfigFile::~ConfigFile() { delete cfg; } bool ConfigFile::locate(sys::Path& p, const char* argv0, void* mainAddr, const char* filename) { // temporary configuration // try the current working dir p = sys::Path::GetCurrentDirectory(); p.appendComponent(filename); if (p.exists()) return true; // user configuration // try ~/.ldc p = sys::Path::GetUserHomeDirectory(); p.appendComponent(".ldc"); p.appendComponent(filename); if (p.exists()) return true; #if _WIN32 // try home dir p = sys::Path::GetUserHomeDirectory(); p.appendComponent(filename); if (p.exists()) return true; #endif // system configuration #if _WIN32 // try the install-prefix p = sys::Path(LDC_INSTALL_PREFIX); p.appendComponent(filename); if (p.exists()) return true; #else // try the install-prefix/etc p = sys::Path(LDC_INSTALL_PREFIX); p.appendComponent("etc"); p.appendComponent(filename); if (p.exists()) return true; // try the install-prefix/etc/ldc p = sys::Path(LDC_INSTALL_PREFIX); p.appendComponent("etc"); p.appendComponent("ldc"); p.appendComponent(filename); if (p.exists()) return true; // try /etc (absolute path) p = sys::Path("/etc"); p.appendComponent(filename); if (p.exists()) return true; // try /etc/ldc (absolute path) p = sys::Path("/etc/ldc"); p.appendComponent(filename); if (p.exists()) return true; #endif // try next to the executable p = sys::Path::GetMainExecutable(argv0, mainAddr); p.eraseComponent(); p.appendComponent(filename); if (p.exists()) return true; return false; } bool ConfigFile::read(const char* argv0, void* mainAddr, const char* filename) { sys::Path p; if (!locate(p, argv0, mainAddr, filename)) { // failed to find cfg, users still have the DFLAGS environment var std::cerr << "Error failed to locate the configuration file: " << filename << std::endl; return false; } // save config file path for -v output pathstr = p.str(); try { // read the cfg cfg->readFile(p.c_str()); // make sure there's a default group if (!cfg->exists("default")) { std::cerr << "no default settings in configuration file" << std::endl; return false; } libconfig::Setting& root = cfg->lookup("default"); if (!root.isGroup()) { std::cerr << "default is not a group" << std::endl; return false; } // handle switches if (root.exists("switches")) { std::string binpathkey = "%%ldcbinarypath%%"; std::string binpath = sys::Path::GetMainExecutable(argv0, mainAddr).getDirname(); libconfig::Setting& arr = cfg->lookup("default.switches"); int len = arr.getLength(); for (int i=0; i<len; i++) { std::string v = arr[i]; // replace binpathkey with binpath size_t p; while (std::string::npos != (p = v.find(binpathkey))) v.replace(p, binpathkey.size(), binpath); switches.push_back(strdup(v.c_str())); } } } catch(libconfig::FileIOException& fioe) { std::cerr << "Error reading configuration file: " << filename << std::endl; return false; } catch(libconfig::ParseException& pe) { std::cerr << "Error parsing configuration file: " << filename << "(" << pe.getLine() << "): " << pe.getError() << std::endl; return false; } catch(...) { std::cerr << "Unknown exception caught!" << std::endl; return false; } return true; }