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Add a Force option to raw_fd_ostream to specify whether opening

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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
This commit is contained in:
Dan Gohman committed 2009-07-15 17:29:42 +00:00
1 parent 2286f8dc4c
commit a1bdcedc38
12 files changed
+116 -146
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tools/llc/llc.cpp
+13 -26
View File
@@ -41,8 +41,6 @@
#include "llvm/Config/config.h"
#include "llvm/LinkAllVMCore.h"
#include "llvm/Target/TargetSelect.h"
#include <fstream>
#include <iostream>
#include <memory>
using namespace llvm;
@@ -133,28 +131,22 @@ static formatted_raw_ostream *GetOutputStream(const char *ProgName) {
if (OutputFilename == "-")
return &fouts();
// Specified an output filename?
if (!Force && std::ifstream(OutputFilename.c_str())) {
// If force is not specified, make sure not to overwrite a file!
errs() << ProgName << ": error opening '" << OutputFilename
<< "': file exists!\n"
<< "Use -f command line argument to force output\n";
return 0;
}
// Make sure that the Out file gets unlinked from the disk if we get a
// SIGINT
sys::RemoveFileOnSignal(sys::Path(OutputFilename));
std::string error;
raw_fd_ostream *FDOut = new raw_fd_ostream(OutputFilename.c_str(),
true, error);
formatted_raw_ostream *Out =
new formatted_raw_ostream(*FDOut, formatted_raw_ostream::DELETE_STREAM);
/*Binary=*/true, Force, error);
if (!error.empty()) {
errs() << error << '\n';
delete Out;
if (!Force)
errs() << "Use -f command line argument to force output\n";
delete FDOut;
return 0;
}
formatted_raw_ostream *Out =
new formatted_raw_ostream(*FDOut, formatted_raw_ostream::DELETE_STREAM);
return Out;
}
@@ -189,29 +181,24 @@ static formatted_raw_ostream *GetOutputStream(const char *ProgName) {
break;
}
if (!Force && std::ifstream(OutputFilename.c_str())) {
// If force is not specified, make sure not to overwrite a file!
errs() << ProgName << ": error opening '" << OutputFilename
<< "': file exists!\n"
<< "Use -f command line argument to force output\n";
return 0;
}
// Make sure that the Out file gets unlinked from the disk if we get a
// SIGINT
sys::RemoveFileOnSignal(sys::Path(OutputFilename));
std::string error;
raw_fd_ostream *FDOut = new raw_fd_ostream(OutputFilename.c_str(),
Binary, error);
formatted_raw_ostream *Out =
new formatted_raw_ostream(*FDOut, formatted_raw_ostream::DELETE_STREAM);
Binary, Force, error);
if (!error.empty()) {
errs() << error << '\n';
delete Out;
if (!Force)
errs() << "Use -f command line argument to force output\n";
delete FDOut;
return 0;
}
formatted_raw_ostream *Out =
new formatted_raw_ostream(*FDOut, formatted_raw_ostream::DELETE_STREAM);
return Out;
}