source/virtualfilesystem.cpp

   1 #include <msp/fs/stat.h>
   2 #include <msp/fs/utils.h>
   3 #include <msp/io/print.h>
   4 #include <msp/strings/utils.h>
   5 #include "builder.h"
   6 #include "csourcefile.h"
   7 #include "misc.h"
   8 #include "sharedlibrary.h"
   9 #include "staticlibrary.h"
  10 #include "tool.h"
  11 #include "virtualfilesystem.h"
  12
  13 using namespace std;
  14 using namespace Msp;
  15
  16 VirtualFileSystem::VirtualFileSystem(Builder &b):
  17         builder(b)
  18 {
  19 }
  20
  21 FileTarget *VirtualFileSystem::get_target(const FS::Path &p) const
  22 {
  23         TargetMap::const_iterator i = targets.find(p.str());
  24         if(i!=targets.end())
  25                 return static_cast<FileTarget *>(i->second);
  26         return 0;
  27 }
  28
  29 void VirtualFileSystem::register_path(const FS::Path &path, FileTarget *t)
  30 {
  31         targets.insert(TargetMap::value_type(path.str(), t));
  32         nonexistent.erase(path);
  33         builder.get_logger().log("vfs", format("Path %s registered to %s", path, t->get_name()));
  34 }
  35
  36 FileTarget *VirtualFileSystem::find_header(const string &name, const SearchPath &path)
  37 {
  38         // XXX This will cause trouble with multiple architectures in a single build
  39         const Tool *tool = builder.get_toolchain().get_tool_for_suffix(FS::extpart(FS::basename(name)), true);
  40         if(!tool)
  41                 return 0;
  42         const Tool::SearchPath &syspath = tool->get_system_path();
  43
  44         list<FS::Path> combined_path(path.begin(), path.end());
  45         combined_path.insert(combined_path.end(), syspath.begin(), syspath.end());
  46
  47         for(list<FS::Path>::const_iterator i=combined_path.begin(); i!=combined_path.end(); ++i)
  48         {
  49                 FS::Path filename = *i/name;
  50                 if(FileTarget *tgt = get_target(filename))
  51                 {
  52                         builder.get_logger().log("vfs", format("Header %s found in %s as existing %s", name, i->str(), tgt->get_type()));
  53                         return tgt;
  54                 }
  55                 else if(file_exists(filename))
  56                 {
  57                         builder.get_logger().log("vfs", format("Header %s found in %s", name, i->str()));
  58                         return dynamic_cast<FileTarget *>(tool->create_source(filename));
  59                 }
  60
  61                 builder.get_logger().log("vfs", format("Header %s not found in %s", name, i->str()));
  62         }
  63
  64         return 0;
  65 }
  66
  67 FileTarget *VirtualFileSystem::find_library(const string &lib, const SearchPath &path, LibMode mode)
  68 {
  69         const Tool &linker = builder.get_toolchain().get_tool("LINK");
  70         const Tool::SearchPath &syspath = linker.get_system_path();
  71
  72         list<FS::Path> combined_path(path.begin(), path.end());
  73         combined_path.insert(combined_path.end(), syspath.begin(), syspath.end());
  74
  75         const Architecture &arch = builder.get_current_arch();
  76
  77         /* Try dynamic libraries only if library mode permits it */
  78         list<string> shared_names;
  79         if(mode!=ALL_STATIC)
  80         {
  81                 const list<Pattern> &shared_patterns = arch.get_shared_library_patterns();
  82                 for(list<Pattern>::const_iterator i=shared_patterns.begin(); i!=shared_patterns.end(); ++i)
  83                         shared_names.push_back(i->apply(lib));
  84         }
  85
  86         /* Static libraries are always considered, since sometimes shared versions
  87         may not be available */
  88         list<string> static_names;
  89         const list<Pattern> &static_patterns = arch.get_static_library_patterns();
  90         for(list<Pattern>::const_iterator i=static_patterns.begin(); i!=static_patterns.end(); ++i)
  91                 static_names.push_back(i->apply(lib));
  92
  93         for(list<FS::Path>::const_iterator i=combined_path.begin(); i!=combined_path.end(); ++i)
  94         {
  95                 bool shared = true;
  96                 for(list<string>::const_iterator j=shared_names.begin(); j!=static_names.end(); )
  97                 {
  98                         if(j==shared_names.end())
  99                         {
 100                                 j = static_names.begin();
 101                                 shared = false;
 102                                 continue;
 103                         }
 104
 105                         FS::Path filename = *i / *j;
 106                         if(FileTarget *tgt = get_target(filename))
 107                         {
 108                                 if(!shared || mode==DYNAMIC || !tgt->get_package())
 109                                 {
 110                                         builder.get_logger().log("vfs", format("Library %s (%s) found in %s as existing %s", lib, *j, i->str(), tgt->get_type()));
 111                                         return tgt;
 112                                 }
 113                         }
 114                         else if(file_exists(filename))
 115                         {
 116                                 builder.get_logger().log("vfs", format("Library %s (%s) found in %s", lib, *j, i->str()));
 117                                 if(shared)
 118                                         return new SharedLibrary(builder, filename);
 119                                 else
 120                                         return new StaticLibrary(builder, filename);
 121                         }
 122
 123                         ++j;
 124                 }
 125
 126                 builder.get_logger().log("vfs", format("Library %s not found in %s", lib, i->str()));
 127         }
 128
 129         return 0;
 130 }
 131
 132 bool VirtualFileSystem::file_exists(const FS::Path &filename)
 133 {
 134         if(nonexistent.count(filename))
 135                 return false;
 136         if(FS::is_reg(filename))
 137                 return true;
 138         nonexistent.insert(filename);
 139         return false;
 140 }