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