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 "misc.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, const SearchPath &path)
  39 {
  40         // XXX This will cause trouble with multiple architectures in a single build
  41         const Tool *tool = builder.get_toolchain().get_tool_for_suffix(FS::extpart(FS::basename(name)), true);
  42         if(!tool)
  43                 return 0;
  44         const Tool::SearchPath &syspath = tool->get_system_path();
  45
  46         list<FS::Path> combined_path(path.begin(), path.end());
  47         combined_path.insert(combined_path.end(), syspath.begin(), syspath.end());
  48
  49         for(list<FS::Path>::const_iterator i=combined_path.begin(); i!=combined_path.end(); ++i)
  50         {
  51                 FS::Path filename = *i/name;
  52                 if(FileTarget *tgt = get_target(filename))
  53                 {
  54                         builder.get_logger().log("vfs", format("Header %s found in %s as existing %s", name, i->str(), tgt->get_type()));
  55                         return tgt;
  56                 }
  57                 else if(file_exists(filename))
  58                 {
  59                         builder.get_logger().log("vfs", format("Header %s found in %s", name, i->str()));
  60                         return dynamic_cast<FileTarget *>(tool->create_source(filename));
  61                 }
  62
  63                 builder.get_logger().log("vfs", format("Header %s not found in %s", name, i->str()));
  64         }
  65
  66         return 0;
  67 }
  68
  69 FileTarget *VirtualFileSystem::find_library(const string &lib, const SearchPath &path, LibMode mode)
  70 {
  71         const Tool &linker = builder.get_toolchain().get_tool("LINK");
  72         const Tool::SearchPath &syspath = linker.get_system_path();
  73
  74         list<FS::Path> combined_path(path.begin(), path.end());
  75         combined_path.insert(combined_path.end(), syspath.begin(), syspath.end());
  76
  77         const Architecture &arch = builder.get_current_arch();
  78
  79         /* Try dynamic libraries only if library mode permits it */
  80         list<string> shared_names;
  81         if(mode!=ALL_STATIC)
  82         {
  83                 const list<Pattern> &shared_patterns = arch.get_shared_library_patterns();
  84                 for(list<Pattern>::const_iterator i=shared_patterns.begin(); i!=shared_patterns.end(); ++i)
  85                         shared_names.push_back(i->apply(lib));
  86         }
  87
  88         /* Static libraries are always considered, since sometimes shared versions
  89         may not be available */
  90         list<string> static_names;
  91         const list<Pattern> &static_patterns = arch.get_static_library_patterns();
  92         for(list<Pattern>::const_iterator i=static_patterns.begin(); i!=static_patterns.end(); ++i)
  93                 static_names.push_back(i->apply(lib));
  94
  95         for(list<FS::Path>::const_iterator i=combined_path.begin(); i!=combined_path.end(); ++i)
  96         {
  97                 bool shared = true;
  98                 for(list<string>::const_iterator j=shared_names.begin(); j!=static_names.end(); )
  99                 {
 100                         if(j==shared_names.end())
 101                         {
 102                                 j = static_names.begin();
 103                                 shared = false;
 104                                 continue;
 105                         }
 106
 107                         FS::Path filename = *i / *j;
 108                         if(FileTarget *tgt = get_target(filename))
 109                         {
 110                                 if(!shared || mode==DYNAMIC || !tgt->get_package())
 111                                 {
 112                                         builder.get_logger().log("vfs", format("Library %s (%s) found in %s as existing %s", lib, *j, i->str(), tgt->get_type()));
 113                                         return tgt;
 114                                 }
 115                         }
 116                         else if(file_exists(filename))
 117                         {
 118                                 builder.get_logger().log("vfs", format("Library %s (%s) found in %s", lib, *j, i->str()));
 119                                 if(shared)
 120                                         return new SharedLibrary(builder, filename);
 121                                 else
 122                                         return new StaticLibrary(builder, filename);
 123                         }
 124
 125                         ++j;
 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 }