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Implement a function to print a warning if bytecode output is to be sent to

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a terminal/console.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19237 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2005-01-01 23:56:20 +00:00
parent c6dffe0a5b
commit 436f23ebf5
2 changed files with 16 additions and 11 deletions
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9
include/llvm/Support/SystemUtils.h
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@ -19,9 +19,12 @@
namespace llvm {
/// isStandardOutAConsole - Return true if we can tell that the standard output
/// stream goes to a terminal window or console.
bool isStandardOutAConsole();
/// Determine if the ostream provided is connected to the std::cout and
/// displayed or not (to a console window). If so, generate a warning message
/// advising against display of bytecode and return true. Otherwise just return
/// false
/// @brief Check for output written to a console
bool CheckBytecodeOutputToConsole(std::ostream* stream_to_check);
/// FindExecutable - Find a named executable, giving the argv[0] of program
/// being executed. This allows us to find another LLVM tool if it is built into

18
lib/Support/SystemUtils.cpp
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@ -14,20 +14,22 @@
#include "llvm/Support/SystemUtils.h"
#include "llvm/System/Program.h"
#include "llvm/System/Process.h"
#include <iostream>
using namespace llvm;
/// isStandardOutAConsole - Return true if we can tell that the standard output
/// stream goes to a terminal window or console.
bool llvm::isStandardOutAConsole() {
#if HAVE_ISATTY
return isatty(1);
#endif
// If we don't have isatty, just return false.
bool llvm::CheckBytecodeOutputToConsole(std::ostream* stream_to_check) {
if (stream_to_check == &std::cout && sys::Process::StandardOutIsDisplayed()) {
std::cerr << "WARNING: You're attempting to print out a bytecode file.\n";
std::cerr << "This is inadvisable as it may cause display problems. If\n";
std::cerr << "you REALLY want to taste LLVM bytecode first-hand, you can\n";
std::cerr << "force output with the `-f' option.\n\n";
return true;
}
return false;
}
/// FindExecutable - Find a named executable, giving the argv[0] of program
/// being executed. This allows us to find another LLVM tool if it is built
/// into the same directory, but that directory is neither the current