// file : butl/triplet.cxx -*- C++ -*- // copyright : Copyright (c) 2014-2016 Code Synthesis Ltd // license : MIT; see accompanying LICENSE file #include <butl/triplet> #include <stdexcept> // invalid_argument using namespace std; namespace butl { triplet:: triplet (const string& s, string* c) { auto bad = [](const char* m) {throw invalid_argument (m);}; // Find the first and the last components. The first is CPU and the last is // (part of) SYSTEM, that we know for sure. // string::size_type f (s.find ('-')), l (s.rfind ('-')); if (f == 0 || f == string::npos) bad ("missing cpu"); cpu.assign (s, 0, f); if (c != nullptr) *c = cpu; // If we have something in between, then the first component after CPU is // VENDOR. Unless it is a first component of two-component system, as in // i686-linux-gnu. // if (f != l) { // [f, p) is VENDOR. // string::size_type p (s.find ('-', ++f)), n (p - f); if (n == 0) bad ("empty vendor"); // Do we have all four components? If so, then we don't need to do any // special recognition of two-component systems. // if (l != p) { l = s.rfind ('-', --l); if (l != p) bad ("too many components"); // Handle the none-* case here. // if (s.compare (l + 1, 5, "none-") == 0) l += 5; } else { // See if this is one of the well-known non-vendors. // if (s.compare (f, n, "linux") == 0 || s.compare (f, n, "kfreebsd") == 0) { l = f - 1; n = 0; // No VENDOR. } } // Handle special VENDOR values. // if (n != 0) { if (s.compare (f, n, "pc") != 0 && s.compare (f, n, "none") != 0 && s.compare (f, n, "unknown") != 0) { vendor.assign (s, f, n); if (c != nullptr) { *c += '-'; *c += vendor; } } } } // (l, npos) is SYSTEM // system.assign (s, ++l, string::npos); if (system.empty ()) bad ("missing os/kernel/abi"); if (system.front () == '-' || system.back () == '-') bad ("invalid os/kernel/abi"); if (c != nullptr) { *c += '-'; *c += system; } // Extract VERSION for some recognized systems. // string::size_type v (0); if (system.compare (0, (v = 6), "darwin") == 0 || system.compare (0, (v = 7), "freebsd") == 0 || system.compare (0, (v = 7), "openbsd") == 0 || system.compare (0, (v = 6), "netbsd") == 0 || system.compare (0, (v = 7), "solaris") == 0 || system.compare (0, (v = 3), "aix") == 0 || system.compare (0, (v = 4), "hpux") == 0 || system.compare (0, (v = 10), "win32-msvc") == 0) { version.assign (system, v, string::npos); system.resize (system.size () - version.size ()); } // Determine class for some recognized systems. // if (system.compare (0, 5, "linux") == 0) class_ = "linux"; else if (vendor == "apple" && system == "darwin") class_ = "macosx"; else if (system == "freebsd") class_ = "freebsd"; else if (system.compare (0, 5, "win32") == 0 || system == "mingw32") class_ = "windows"; else class_ = "other"; } }