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authorDan Gohman <gohman@apple.com>2009-07-15 17:29:42 +0000
committerDan Gohman <gohman@apple.com>2009-07-15 17:29:42 +0000
commita1bdcedc3879510a874d24c450e07feb170d9cd6 (patch)
tree87232c6e8e70de1345065d6e50540c4577f68dc3 /tools/llvm-dis/llvm-dis.cpp
parent2286f8dc4cec0625f7d7a14e2570926cf8599646 (diff)
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Add a Force option to raw_fd_ostream to specify whether opening
an existing file is considered an error. Convert several tools to use raw_fd_ostream instead of std::ostream, and to use this new option instead of doing a manual check. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75801 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/llvm-dis/llvm-dis.cpp')
-rw-r--r--tools/llvm-dis/llvm-dis.cpp55
1 files changed, 25 insertions, 30 deletions
diff --git a/tools/llvm-dis/llvm-dis.cpp b/tools/llvm-dis/llvm-dis.cpp
index 901c8e9d3a..8fa00d5b03 100644
--- a/tools/llvm-dis/llvm-dis.cpp
+++ b/tools/llvm-dis/llvm-dis.cpp
@@ -28,8 +28,6 @@
#include "llvm/Support/Streams.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/System/Signals.h"
-#include <iostream>
-#include <fstream>
#include <memory>
using namespace llvm;
@@ -56,7 +54,7 @@ int main(int argc, char **argv) {
try {
cl::ParseCommandLineOptions(argc, argv, "llvm .bc -> .ll disassembler\n");
- std::ostream *Out = &std::cout; // Default to printing to stdout.
+ raw_ostream *Out = &outs(); // Default to printing to stdout.
std::string ErrorMessage;
std::auto_ptr<Module> M;
@@ -80,12 +78,15 @@ int main(int argc, char **argv) {
// Just use stdout. We won't actually print anything on it.
} else if (OutputFilename != "") { // Specified an output filename?
if (OutputFilename != "-") { // Not stdout?
- if (!Force && std::ifstream(OutputFilename.c_str())) {
- // If force is not specified, make sure not to overwrite a file!
- cerr << argv[0] << ": error opening '" << OutputFilename
- << "': file exists! Sending to standard output.\n";
- } else {
- Out = new std::ofstream(OutputFilename.c_str());
+ std::string ErrorInfo;
+ Out = new raw_fd_ostream(OutputFilename.c_str(), /*Binary=*/false,
+ Force, ErrorInfo);
+ if (!ErrorInfo.empty()) {
+ errs() << ErrorInfo << '\n';
+ if (!Force)
+ errs() << "Use -f command line argument to force output\n";
+ delete Out;
+ return 1;
}
}
} else {
@@ -101,38 +102,32 @@ int main(int argc, char **argv) {
OutputFilename = IFN+".ll";
}
- if (!Force && std::ifstream(OutputFilename.c_str())) {
- // If force is not specified, make sure not to overwrite a file!
- cerr << argv[0] << ": error opening '" << OutputFilename
- << "': file exists! Sending to standard output.\n";
- } else {
- Out = new std::ofstream(OutputFilename.c_str());
-
- // Make sure that the Out file gets unlinked from the disk if we get a
- // SIGINT
- sys::RemoveFileOnSignal(sys::Path(OutputFilename));
+ std::string ErrorInfo;
+ Out = new raw_fd_ostream(OutputFilename.c_str(), /*Binary=*/false,
+ Force, ErrorInfo);
+ if (!ErrorInfo.empty()) {
+ errs() << ErrorInfo << '\n';
+ if (!Force)
+ errs() << "Use -f command line argument to force output\n";
+ delete Out;
+ return 1;
}
- }
- }
- if (!Out->good()) {
- cerr << argv[0] << ": error opening " << OutputFilename
- << ": sending to stdout instead!\n";
- Out = &std::cout;
+ // Make sure that the Out file gets unlinked from the disk if we get a
+ // SIGINT
+ sys::RemoveFileOnSignal(sys::Path(OutputFilename));
+ }
}
// All that llvm-dis does is write the assembly to a file.
if (!DontPrint) {
PassManager Passes;
- raw_os_ostream L(*Out);
- Passes.add(createPrintModulePass(&L));
+ Passes.add(createPrintModulePass(Out));
Passes.run(*M.get());
}
- if (Out != &std::cout) {
- ((std::ofstream*)Out)->close();
+ if (Out != &outs())
delete Out;
- }
return 0;
} catch (const std::string& msg) {
cerr << argv[0] << ": " << msg << "\n";