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      1 //===--- Distro.h - Linux distribution detection support --------*- C++ -*-===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 
     10 #ifndef LLVM_CLANG_DRIVER_DISTRO_H
     11 #define LLVM_CLANG_DRIVER_DISTRO_H
     12 
     13 #include "clang/Basic/VirtualFileSystem.h"
     14 
     15 namespace clang {
     16 namespace driver {
     17 
     18 /// Distro - Helper class for detecting and classifying Linux distributions.
     19 ///
     20 /// This class encapsulates the clang Linux distribution detection mechanism
     21 /// as well as helper functions that match the specific (versioned) results
     22 /// into wider distribution classes.
     23 class Distro {
     24 public:
     25   enum DistroType {
     26     // NB: Releases of a particular Linux distro should be kept together
     27     // in this enum, because some tests are done by integer comparison against
     28     // the first and last known member in the family, e.g. IsRedHat().
     29     ArchLinux,
     30     DebianLenny,
     31     DebianSqueeze,
     32     DebianWheezy,
     33     DebianJessie,
     34     DebianStretch,
     35     Exherbo,
     36     RHEL5,
     37     RHEL6,
     38     RHEL7,
     39     Fedora,
     40     OpenSUSE,
     41     UbuntuHardy,
     42     UbuntuIntrepid,
     43     UbuntuJaunty,
     44     UbuntuKarmic,
     45     UbuntuLucid,
     46     UbuntuMaverick,
     47     UbuntuNatty,
     48     UbuntuOneiric,
     49     UbuntuPrecise,
     50     UbuntuQuantal,
     51     UbuntuRaring,
     52     UbuntuSaucy,
     53     UbuntuTrusty,
     54     UbuntuUtopic,
     55     UbuntuVivid,
     56     UbuntuWily,
     57     UbuntuXenial,
     58     UbuntuYakkety,
     59     UbuntuZesty,
     60     UbuntuArtful,
     61     UnknownDistro
     62   };
     63 
     64 private:
     65   /// The distribution, possibly with specific version.
     66   DistroType DistroVal;
     67 
     68 public:
     69   /// @name Constructors
     70   /// @{
     71 
     72   /// Default constructor leaves the distribution unknown.
     73   Distro() : DistroVal() {}
     74 
     75   /// Constructs a Distro type for specific distribution.
     76   Distro(DistroType D) : DistroVal(D) {}
     77 
     78   /// Detects the distribution using specified VFS.
     79   explicit Distro(clang::vfs::FileSystem& VFS);
     80 
     81   bool operator==(const Distro &Other) const {
     82     return DistroVal == Other.DistroVal;
     83   }
     84 
     85   bool operator!=(const Distro &Other) const {
     86     return DistroVal != Other.DistroVal;
     87   }
     88 
     89   bool operator>=(const Distro &Other) const {
     90     return DistroVal >= Other.DistroVal;
     91   }
     92 
     93   bool operator<=(const Distro &Other) const {
     94     return DistroVal <= Other.DistroVal;
     95   }
     96 
     97   /// @}
     98   /// @name Convenience Predicates
     99   /// @{
    100 
    101   bool IsRedhat() const {
    102     return DistroVal == Fedora || (DistroVal >= RHEL5 && DistroVal <= RHEL7);
    103   }
    104 
    105   bool IsOpenSUSE() const {
    106     return DistroVal == OpenSUSE;
    107   }
    108 
    109   bool IsDebian() const {
    110     return DistroVal >= DebianLenny && DistroVal <= DebianStretch;
    111   }
    112 
    113   bool IsUbuntu() const {
    114     return DistroVal >= UbuntuHardy && DistroVal <= UbuntuArtful;
    115   }
    116 
    117   /// @}
    118 };
    119 
    120 } // end namespace driver
    121 } // end namespace clang
    122 
    123 #endif
    124