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//===-- GraphWriter.cpp - Implements GraphWriter support routines ---------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements misc. GraphWriter support routines.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/GraphWriter.h"
#include "llvm/Config/config.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Program.h"
using namespace llvm;
static cl::opt<bool> ViewBackground("view-background", cl::Hidden,
cl::desc("Execute graph viewer in the background. Creates tmp file litter."));
std::string llvm::DOT::EscapeString(const std::string &Label) {
std::string Str(Label);
for (unsigned i = 0; i != Str.length(); ++i)
switch (Str[i]) {
case '\n':
Str.insert(Str.begin()+i, '\\'); // Escape character...
++i;
Str[i] = 'n';
break;
case '\t':
Str.insert(Str.begin()+i, ' '); // Convert to two spaces
++i;
Str[i] = ' ';
break;
case '\\':
if (i+1 != Str.length())
switch (Str[i+1]) {
case 'l': continue; // don't disturb \l
case '|': case '{': case '}':
Str.erase(Str.begin()+i); continue;
default: break;
}
case '{': case '}':
case '<': case '>':
case '|': case '"':
Str.insert(Str.begin()+i, '\\'); // Escape character...
++i; // don't infinite loop
break;
}
return Str;
}
/// \brief Get a color string for this node number. Simply round-robin selects
/// from a reasonable number of colors.
StringRef llvm::DOT::getColorString(unsigned ColorNumber) {
static const int NumColors = 20;
static const char* Colors[NumColors] = {
"aaaaaa", "aa0000", "00aa00", "aa5500", "0055ff", "aa00aa", "00aaaa",
"555555", "ff5555", "55ff55", "ffff55", "5555ff", "ff55ff", "55ffff",
"ffaaaa", "aaffaa", "ffffaa", "aaaaff", "ffaaff", "aaffff"};
return Colors[ColorNumber % NumColors];
}
std::string llvm::createGraphFilename(const Twine &Name, int &FD) {
FD = -1;
SmallString<128> Filename;
error_code EC = sys::fs::createTemporaryFile(Name, "dot", FD, Filename);
if (EC) {
errs() << "Error: " << EC.message() << "\n";
return "";
}
errs() << "Writing '" << Filename << "'... ";
return Filename.str();
}
// Execute the graph viewer. Return true if successful.
static bool LLVM_ATTRIBUTE_UNUSED
ExecGraphViewer(StringRef ExecPath, std::vector<const char*> &args,
StringRef Filename, bool wait, std::string &ErrMsg) {
if (wait) {
if (sys::ExecuteAndWait(ExecPath, &args[0],0,0,0,0,&ErrMsg)) {
errs() << "Error: " << ErrMsg << "\n";
return false;
}
bool Existed;
sys::fs::remove(Filename, Existed);
errs() << " done. \n";
}
else {
sys::ExecuteNoWait(ExecPath, &args[0],0,0,0,&ErrMsg);
errs() << "Remember to erase graph file: " << Filename.str() << "\n";
}
return true;
}
void llvm::DisplayGraph(StringRef FilenameRef, bool wait,
GraphProgram::Name program) {
std::string Filename = FilenameRef;
wait &= !ViewBackground;
std::string ErrMsg;
#if HAVE_GRAPHVIZ
std::string Graphviz(LLVM_PATH_GRAPHVIZ);
std::vector<const char*> args;
args.push_back(Graphviz.c_str());
args.push_back(Filename.c_str());
args.push_back(0);
errs() << "Running 'Graphviz' program... ";
if (!ExecGraphViewer(Graphviz, args, Filename, wait, ErrMsg))
return;
#elif HAVE_XDOT
std::vector<const char*> args;
args.push_back(LLVM_PATH_XDOT);
args.push_back(Filename.c_str());
switch (program) {
case GraphProgram::DOT: args.push_back("-f"); args.push_back("dot"); break;
case GraphProgram::FDP: args.push_back("-f"); args.push_back("fdp"); break;
case GraphProgram::NEATO: args.push_back("-f"); args.push_back("neato");break;
case GraphProgram::TWOPI: args.push_back("-f"); args.push_back("twopi");break;
case GraphProgram::CIRCO: args.push_back("-f"); args.push_back("circo");break;
}
args.push_back(0);
errs() << "Running 'xdot.py' program... ";
if (!ExecGraphViewer(LLVM_PATH_XDOT, args, Filename, wait, ErrMsg))
return;
#elif (HAVE_GV && (HAVE_DOT || HAVE_FDP || HAVE_NEATO || \
HAVE_TWOPI || HAVE_CIRCO))
std::string PSFilename = Filename + ".ps";
std::string prog;
// Set default grapher
#if HAVE_CIRCO
prog = LLVM_PATH_CIRCO;
#endif
#if HAVE_TWOPI
prog = LLVM_PATH_TWOPI;
#endif
#if HAVE_NEATO
prog = LLVM_PATH_NEATO;
#endif
#if HAVE_FDP
prog = LLVM_PATH_FDP;
#endif
#if HAVE_DOT
prog = LLVM_PATH_DOT;
#endif
// Find which program the user wants
#if HAVE_DOT
if (program == GraphProgram::DOT)
prog = LLVM_PATH_DOT;
#endif
#if (HAVE_FDP)
if (program == GraphProgram::FDP)
prog = LLVM_PATH_FDP;
#endif
#if (HAVE_NEATO)
if (program == GraphProgram::NEATO)
prog = LLVM_PATH_NEATO;
#endif
#if (HAVE_TWOPI)
if (program == GraphProgram::TWOPI)
prog = LLVM_PATH_TWOPI;
#endif
#if (HAVE_CIRCO)
if (program == GraphProgram::CIRCO)
prog = LLVM_PATH_CIRCO;
#endif
std::vector<const char*> args;
args.push_back(prog.c_str());
args.push_back("-Tps");
args.push_back("-Nfontname=Courier");
args.push_back("-Gsize=7.5,10");
args.push_back(Filename.c_str());
args.push_back("-o");
args.push_back(PSFilename.c_str());
args.push_back(0);
errs() << "Running '" << prog << "' program... ";
if (!ExecGraphViewer(prog, args, Filename, wait, ErrMsg))
return;
std::string gv(LLVM_PATH_GV);
args.clear();
args.push_back(gv.c_str());
args.push_back(PSFilename.c_str());
args.push_back("--spartan");
args.push_back(0);
ErrMsg.clear();
if (!ExecGraphViewer(gv, args, PSFilename, wait, ErrMsg))
return;
#elif HAVE_DOTTY
std::string dotty(LLVM_PATH_DOTTY);
std::vector<const char*> args;
args.push_back(dotty.c_str());
args.push_back(Filename.c_str());
args.push_back(0);
// Dotty spawns another app and doesn't wait until it returns
#if defined (__MINGW32__) || defined (_WINDOWS)
wait = false;
#endif
errs() << "Running 'dotty' program... ";
if (!ExecGraphViewer(dotty, args, Filename, wait, ErrMsg))
return;
#else
(void)Filename;
(void)ErrMsg;
#endif
}
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