lib/Bitcode/Writer/BitWriter.cpp

   1 //===-- BitWriter.cpp -----------------------------------------------------===//
   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 #include "llvm-c/BitWriter.h"
  11 #include "llvm/Bitcode/ReaderWriter.h"
  12 #include <fstream>
  13
  14 using namespace llvm;
  15
  16
  17 /*===-- Operations on modules ---------------------------------------------===*/
  18
  19 int LLVMWriteBitcodeToFile(LLVMModuleRef M, const char *Path) {
  20   std::ofstream OS(Path, std::ios_base::out|std::ios::trunc|std::ios::binary);
  21
  22   if (!OS.fail())
  23     WriteBitcodeToFile(unwrap(M), OS);
  24
  25   if (OS.fail())
  26     return -1;
  27
  28   return 0;
  29 }
  30
  31 #if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR >= 4)
  32 #include <ext/stdio_filebuf.h>
  33
  34 // FIXME: Control this with configure? Provide some portable abstraction in
  35 // libSystem? As is, the user will just get a linker error if they use this on
  36 // non-GCC. Some C++ stdlibs even have ofstream::ofstream(int fd).
  37 int LLVMWriteBitcodeToFileHandle(LLVMModuleRef M, int FileHandle) {
  38   __gnu_cxx::stdio_filebuf<char> Buffer(FileHandle, std::ios_base::out |
  39                                                     std::ios::trunc |
  40                                                     std::ios::binary);
  41   std::ostream OS(&Buffer);
  42
  43   if (!OS.fail())
  44     WriteBitcodeToFile(unwrap(M), OS);
  45
  46   if (OS.fail())
  47     return -1;
  48
  49   return 0;
  50 }
  51
  52 #else
  53
  54 int LLVMWriteBitcodeToFileHandle(LLVMModuleRef M, int FileHandle) {
  55   return -1; // Not supported.
  56 }
  57
  58 #endif