source/virtualfilesystem.cpp

   1 #include <cstdlib>
   2 #include <msp/fs/stat.h>
   3 #include <msp/fs/utils.h>
   4 #include <msp/io/print.h>
   5 #include <msp/strings/utils.h>
   6 #include "builder.h"
   7 #include "csourcefile.h"
   8 #include "executable.h"
   9 #include "importlibrary.h"
  10 #include "sharedlibrary.h"
  11 #include "staticlibrary.h"
  12 #include "tool.h"
  13 #include "virtualfilesystem.h"
  14
  15 using namespace std;
  16 using namespace Msp;
  17
  18 VirtualFileSystem::VirtualFileSystem(Builder &b):
  19         builder(b)
  20 {
  21 }
  22
  23 FileTarget *VirtualFileSystem::get_target(const FS::Path &p) const
  24 {
  25         TargetMap::const_iterator i = targets.find(p.str());
  26         if(i!=targets.end())
  27                 return static_cast<FileTarget *>(i->second);
  28         return 0;
  29 }
  30
  31 void VirtualFileSystem::register_path(const FS::Path &path, FileTarget *t)
  32 {
  33         targets.insert(TargetMap::value_type(path.str(), t));
  34         nonexistent.erase(path);
  35         builder.get_logger().log("vfs", format("Path %s registered to %s", path, t->get_name()));
  36 }
  37
  38 FileTarget *VirtualFileSystem::find_header(const string &name, Tool *tool, const SearchPath &path, bool use_syspath)
  39 {
  40         if(!tool)
  41                 tool = builder.get_toolchain().get_tool_for_suffix(FS::extpart(FS::basename(name)), true);
  42         if(!tool)
  43                 return 0;
  44
  45         tool->prepare();
  46
  47         list<FS::Path> combined_path(path.begin(), path.end());
  48         if(use_syspath)
  49         {
  50                 const Tool::SearchPath &syspath = tool->get_system_path();
  51                 combined_path.insert(combined_path.end(), syspath.begin(), syspath.end());
  52         }
  53
  54         for(list<FS::Path>::const_iterator i=combined_path.begin(); i!=combined_path.end(); ++i)
  55         {
  56                 FS::Path filename = *i/name;
  57                 if(FileTarget *tgt = get_target(filename))
  58                 {
  59                         builder.get_logger().log("vfs", format("Header %s found in %s as existing %s", name, i->str(), tgt->get_type()));
  60                         return tgt;
  61                 }
  62                 else if(file_exists(filename))
  63                 {
  64                         builder.get_logger().log("vfs", format("Header %s found in %s", name, i->str()));
  65                         return dynamic_cast<FileTarget *>(tool->create_source(filename));
  66                 }
  67
  68                 builder.get_logger().log("vfs", format("Header %s not found in %s", name, i->str()));
  69         }
  70
  71         return 0;
  72 }
  73
  74 FileTarget *VirtualFileSystem::find_library(const string &lib, const SearchPath &path, BuildInfo::LibraryMode mode, bool use_syspath)
  75 {
  76         list<FS::Path> combined_path(path.begin(), path.end());
  77         if(use_syspath)
  78         {
  79                 Tool &linker = builder.get_toolchain().get_tool("LINK");
  80                 linker.prepare();
  81                 const Tool::SearchPath &syspath = linker.get_system_path();
  82                 combined_path.insert(combined_path.end(), syspath.begin(), syspath.end());
  83         }
  84
  85         const Architecture &arch = builder.get_current_arch();
  86
  87         list<string> shared_names;
  88         if(mode!=BuildInfo::FORCE_STATIC)
  89                 shared_names = Pattern::apply_list(arch.get_shared_library_patterns(), lib);
  90
  91         list<string> static_names;
  92         if(mode!=BuildInfo::FORCE_DYNAMIC)
  93                 static_names = Pattern::apply_list(arch.get_static_library_patterns(), lib);
  94
  95         for(list<FS::Path>::const_iterator i=combined_path.begin(); i!=combined_path.end(); ++i)
  96         {
  97                 const list<string> *cur_names = (mode>=BuildInfo::DYNAMIC ? &shared_names : &static_names);
  98                 for(list<string>::const_iterator j=cur_names->begin(); j!=cur_names->end(); )
  99                 {
 100                         FS::Path filename = *i / *j;
 101                         if(FileTarget *tgt = get_target(filename))
 102                         {
 103                                 builder.get_logger().log("vfs", format("Library %s (%s) found in %s as existing %s", lib, *j, i->str(), tgt->get_type()));
 104                                 return tgt;
 105                         }
 106                         else if(file_exists(filename))
 107                         {
 108                                 builder.get_logger().log("vfs", format("Library %s (%s) found in %s", lib, *j, i->str()));
 109                                 if(cur_names==&shared_names)
 110                                 {
 111                                         /* XXX Hack: create ImportLibraries here; they should be handled
 112                                         separately, but I need a more generic way of handling all these
 113                                         filename patterns */
 114                                         if(FS::extpart(*j)==".a")
 115                                                 return new ImportLibrary(builder, filename);
 116                                         return new SharedLibrary(builder, filename);
 117                                 }
 118                                 else
 119                                         return new StaticLibrary(builder, filename);
 120                         }
 121
 122                         if(++j==cur_names->end())
 123                         {
 124                                 if(mode==BuildInfo::DYNAMIC && cur_names==&shared_names)
 125                                         cur_names = &static_names;
 126                                 else if(mode==BuildInfo::STATIC && cur_names==&static_names)
 127                                         cur_names = &shared_names;
 128                                 else
 129                                         break;
 130                                 j = cur_names->begin();
 131                         }
 132                 }
 133
 134                 builder.get_logger().log("vfs", format("Library %s not found in %s", lib, i->str()));
 135         }
 136
 137         return 0;
 138 }
 139
 140 FileTarget *VirtualFileSystem::find_binary(const string &name)
 141 {
 142         SearchPath path;
 143         if(FS::Path(name).is_absolute())
 144                 path.push_back("/");
 145         else if(const char *env_path = getenv("PATH"))
 146         {
 147                 vector<string> parts = split(env_path, ':');
 148                 for(vector<string>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
 149                         path.push_back(*i);
 150         }
 151         else
 152         {
 153                 path.push_back("/bin");
 154                 path.push_back("/usr/bin");
 155         }
 156
 157         for(SearchPath::const_iterator i=path.begin(); i!=path.end(); ++i)
 158         {
 159                 FS::Path filename = *i/name;
 160                 if(FileTarget *tgt = get_target(filename))
 161                 {
 162                         builder.get_logger().log("vfs", format("Binary %s found in %s as existing %s", name, *i, tgt->get_type()));
 163                         return tgt;
 164                 }
 165                 else if(file_exists(filename))
 166                 {
 167                         builder.get_logger().log("vfs", format("Binary %s found in %s", name, *i));
 168                         return new Executable(builder, filename);
 169                 }
 170
 171                 builder.get_logger().log("vfs", format("Binary %s not found in %s", name, *i));
 172         }
 173
 174         return 0;
 175 }
 176
 177 bool VirtualFileSystem::file_exists(const FS::Path &filename)
 178 {
 179         if(nonexistent.count(filename))
 180                 return false;
 181         if(FS::is_reg(filename))
 182                 return true;
 183         nonexistent.insert(filename);
 184         return false;
 185 }