lib/Support/GraphWriter.cpp

   1 //===-- GraphWriter.cpp - Implements GraphWriter support routines ---------===//
   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 // This file implements misc. GraphWriter support routines.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "llvm/Support/GraphWriter.h"
  15 #include "llvm/Support/Path.h"
  16 #include "llvm/Support/Program.h"
  17 #include "llvm/Config/config.h"
  18 using namespace llvm;
  19
  20 std::string llvm::DOT::EscapeString(const std::string &Label) {
  21   std::string Str(Label);
  22   for (unsigned i = 0; i != Str.length(); ++i)
  23   switch (Str[i]) {
  24     case '\n':
  25       Str.insert(Str.begin()+i, '\\');  // Escape character...
  26       ++i;
  27       Str[i] = 'n';
  28       break;
  29     case '\t':
  30       Str.insert(Str.begin()+i, ' ');  // Convert to two spaces
  31       ++i;
  32       Str[i] = ' ';
  33       break;
  34     case '\\':
  35       if (i+1 != Str.length())
  36         switch (Str[i+1]) {
  37           case 'l': continue; // don't disturb \l
  38           case '|': case '{': case '}':
  39             Str.erase(Str.begin()+i); continue;
  40           default: break;
  41         }
  42     case '{': case '}':
  43     case '<': case '>':
  44     case '|': case '"':
  45       Str.insert(Str.begin()+i, '\\');  // Escape character...
  46       ++i;  // don't infinite loop
  47       break;
  48   }
  49   return Str;
  50 }
  51
  52
  53
  54 void llvm::DisplayGraph(const sys::Path &Filename, bool wait,
  55                         GraphProgram::Name program) {
  56   std::string ErrMsg;
  57 #if HAVE_GRAPHVIZ
  58   sys::Path Graphviz(LLVM_PATH_GRAPHVIZ);
  59
  60   std::vector<const char*> args;
  61   args.push_back(Graphviz.c_str());
  62   args.push_back(Filename.c_str());
  63   args.push_back(0);
  64
  65   errs() << "Running 'Graphviz' program... ";
  66   if (sys::Program::ExecuteAndWait(Graphviz, &args[0],0,0,0,0,&ErrMsg)) {
  67     errs() << "Error: " << ErrMsg << "\n";
  68     return;
  69   }
  70   Filename.eraseFromDisk();
  71   errs() << " done. \n";
  72
  73 #elif HAVE_XDOT_PY
  74   std::vector<const char*> args;
  75   args.push_back(LLVM_PATH_XDOT_PY);
  76   args.push_back(Filename.c_str());
  77
  78   switch (program) {
  79   case GraphProgram::DOT:   args.push_back("-f"); args.push_back("dot"); break;
  80   case GraphProgram::FDP:   args.push_back("-f"); args.push_back("fdp"); break;
  81   case GraphProgram::NEATO: args.push_back("-f"); args.push_back("neato");break;
  82   case GraphProgram::TWOPI: args.push_back("-f"); args.push_back("twopi");break;
  83   case GraphProgram::CIRCO: args.push_back("-f"); args.push_back("circo");break;
  84   default: errs() << "Unknown graph layout name; using default.\n";
  85   }
  86
  87   args.push_back(0);
  88
  89   errs() << "Running 'xdot.py' program... ";
  90   if (sys::Program::ExecuteAndWait(sys::Path(LLVM_PATH_XDOT_PY),
  91                                    &args[0],0,0,0,0,&ErrMsg)) {
  92     errs() << "Error: " << ErrMsg << "\n";
  93     return;
  94   }
  95   Filename.eraseFromDisk();
  96   errs() << " done. \n";
  97
  98 #elif (HAVE_GV && (HAVE_DOT || HAVE_FDP || HAVE_NEATO || \
  99                    HAVE_TWOPI || HAVE_CIRCO))
 100   sys::Path PSFilename = Filename;
 101   PSFilename.appendSuffix("ps");
 102
 103   sys::Path prog;
 104
 105   // Set default grapher
 106 #if HAVE_CIRCO
 107   prog = sys::Path(LLVM_PATH_CIRCO);
 108 #endif
 109 #if HAVE_TWOPI
 110   prog = sys::Path(LLVM_PATH_TWOPI);
 111 #endif
 112 #if HAVE_NEATO
 113   prog = sys::Path(LLVM_PATH_NEATO);
 114 #endif
 115 #if HAVE_FDP
 116   prog = sys::Path(LLVM_PATH_FDP);
 117 #endif
 118 #if HAVE_DOT
 119   prog = sys::Path(LLVM_PATH_DOT);
 120 #endif
 121
 122   // Find which program the user wants
 123 #if HAVE_DOT
 124   if (program == GraphProgram::DOT)
 125     prog = sys::Path(LLVM_PATH_DOT);
 126 #endif
 127 #if (HAVE_FDP)
 128   if (program == GraphProgram::FDP)
 129     prog = sys::Path(LLVM_PATH_FDP);
 130 #endif
 131 #if (HAVE_NEATO)
 132   if (program == GraphProgram::NEATO)
 133     prog = sys::Path(LLVM_PATH_NEATO);
 134 #endif
 135 #if (HAVE_TWOPI)
 136   if (program == GraphProgram::TWOPI)
 137     prog = sys::Path(LLVM_PATH_TWOPI);
 138 #endif
 139 #if (HAVE_CIRCO)
 140   if (program == GraphProgram::CIRCO)
 141     prog = sys::Path(LLVM_PATH_CIRCO);
 142 #endif
 143
 144   std::vector<const char*> args;
 145   args.push_back(prog.c_str());
 146   args.push_back("-Tps");
 147   args.push_back("-Nfontname=Courier");
 148   args.push_back("-Gsize=7.5,10");
 149   args.push_back(Filename.c_str());
 150   args.push_back("-o");
 151   args.push_back(PSFilename.c_str());
 152   args.push_back(0);
 153
 154   errs() << "Running '" << prog.str() << "' program... ";
 155
 156   if (sys::Program::ExecuteAndWait(prog, &args[0], 0, 0, 0, 0, &ErrMsg)) {
 157     errs() << "Error: " << ErrMsg << "\n";
 158     return;
 159   }
 160   errs() << " done. \n";
 161
 162   sys::Path gv(LLVM_PATH_GV);
 163   args.clear();
 164   args.push_back(gv.c_str());
 165   args.push_back(PSFilename.c_str());
 166   args.push_back("--spartan");
 167   args.push_back(0);
 168
 169   ErrMsg.clear();
 170   if (wait) {
 171      if (sys::Program::ExecuteAndWait(gv, &args[0],0,0,0,0,&ErrMsg))
 172         errs() << "Error: " << ErrMsg << "\n";
 173      Filename.eraseFromDisk();
 174      PSFilename.eraseFromDisk();
 175   }
 176   else {
 177      sys::Program::ExecuteNoWait(gv, &args[0],0,0,0,&ErrMsg);
 178      errs() << "Remember to erase graph files: " << Filename.str() << " "
 179             << PSFilename.str() << "\n";
 180   }
 181 #elif HAVE_DOTTY
 182   sys::Path dotty(LLVM_PATH_DOTTY);
 183
 184   std::vector<const char*> args;
 185   args.push_back(dotty.c_str());
 186   args.push_back(Filename.c_str());
 187   args.push_back(0);
 188
 189   errs() << "Running 'dotty' program... ";
 190   if (sys::Program::ExecuteAndWait(dotty, &args[0],0,0,0,0,&ErrMsg)) {
 191      errs() << "Error: " << ErrMsg << "\n";
 192   } else {
 193 // Dotty spawns another app and doesn't wait until it returns
 194 #if defined (__MINGW32__) || defined (_WINDOWS)
 195     return;
 196 #endif
 197     Filename.eraseFromDisk();
 198   }
 199 #endif
 200 }