//===----------------------------------------------------------------------===//
#include "llvm/Support/raw_ostream.h"
-#include "llvm/Support/Format.h"
-#include "llvm/Support/Program.h"
-#include "llvm/Support/Process.h"
-#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringExtras.h"
#include "llvm/Config/config.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/ErrorHandling.h"
-#include "llvm/ADT/STLExtras.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/Process.h"
+#include "llvm/Support/Program.h"
#include <cctype>
#include <cerrno>
#include <sys/stat.h>
-#include <sys/types.h>
+#include <system_error>
-#if defined(HAVE_UNISTD_H)
-# include <unistd.h>
-#endif
+// <fcntl.h> may provide O_BINARY.
#if defined(HAVE_FCNTL_H)
# include <fcntl.h>
#endif
+
+#if defined(HAVE_UNISTD_H)
+# include <unistd.h>
+#endif
#if defined(HAVE_SYS_UIO_H) && defined(HAVE_WRITEV)
# include <sys/uio.h>
#endif
#if defined(_MSC_VER)
#include <io.h>
-#include <fcntl.h>
#ifndef STDIN_FILENO
# define STDIN_FILENO 0
#endif
}
void raw_ostream::SetBufferAndMode(char *BufferStart, size_t Size,
- BufferKind Mode) {
- assert(((Mode == Unbuffered && BufferStart == 0 && Size == 0) ||
- (Mode != Unbuffered && BufferStart && Size)) &&
+ BufferKind Mode) {
+ assert(((Mode == Unbuffered && !BufferStart && Size == 0) ||
+ (Mode != Unbuffered && BufferStart && Size != 0)) &&
"stream must be unbuffered or have at least one byte");
// Make sure the current buffer is free of content (we can't flush here; the
// child buffer management logic will be in write_impl).
raw_ostream &raw_ostream::operator<<(long N) {
if (N < 0) {
*this << '-';
- N = -N;
+ // Avoid undefined behavior on LONG_MIN with a cast.
+ N = -(unsigned long)N;
}
return this->operator<<(static_cast<unsigned long>(N));
}
raw_ostream &raw_ostream::operator<<(double N) {
+#ifdef _WIN32
+ // On MSVCRT and compatible, output of %e is incompatible to Posix
+ // by default. Number of exponent digits should be at least 2. "%+03d"
+ // FIXME: Implement our formatter to here or Support/Format.h!
+#if __cplusplus >= 201103L && defined(__MINGW32__)
+ // FIXME: It should be generic to C++11.
+ if (N == 0.0 && std::signbit(N))
+ return *this << "-0.000000e+00";
+#else
+ int fpcl = _fpclass(N);
+
+ // negative zero
+ if (fpcl == _FPCLASS_NZ)
+ return *this << "-0.000000e+00";
+#endif
+
+ char buf[16];
+ unsigned len;
+ len = snprintf(buf, sizeof(buf), "%e", N);
+ if (len <= sizeof(buf) - 2) {
+ if (len >= 5 && buf[len - 5] == 'e' && buf[len - 3] == '0') {
+ int cs = buf[len - 4];
+ if (cs == '+' || cs == '-') {
+ int c1 = buf[len - 2];
+ int c0 = buf[len - 1];
+ if (isdigit(static_cast<unsigned char>(c1)) &&
+ isdigit(static_cast<unsigned char>(c0))) {
+ // Trim leading '0': "...e+012" -> "...e+12\0"
+ buf[len - 3] = c1;
+ buf[len - 2] = c0;
+ buf[--len] = 0;
+ }
+ }
+ }
+ return this->operator<<(buf);
+ }
+#endif
return this->operator<<(format("%e", N));
}
raw_ostream &raw_ostream::write(unsigned char C) {
// Group exceptional cases into a single branch.
- if (BUILTIN_EXPECT(OutBufCur >= OutBufEnd, false)) {
- if (BUILTIN_EXPECT(!OutBufStart, false)) {
+ if (LLVM_UNLIKELY(OutBufCur >= OutBufEnd)) {
+ if (LLVM_UNLIKELY(!OutBufStart)) {
if (BufferMode == Unbuffered) {
write_impl(reinterpret_cast<char*>(&C), 1);
return *this;
raw_ostream &raw_ostream::write(const char *Ptr, size_t Size) {
// Group exceptional cases into a single branch.
- if (BUILTIN_EXPECT(OutBufCur+Size > OutBufEnd, false)) {
- if (BUILTIN_EXPECT(!OutBufStart, false)) {
+ if (LLVM_UNLIKELY(size_t(OutBufEnd - OutBufCur) < Size)) {
+ if (LLVM_UNLIKELY(!OutBufStart)) {
if (BufferMode == Unbuffered) {
write_impl(Ptr, Size);
return *this;
// If the buffer is empty at this point we have a string that is larger
// than the buffer. Directly write the chunk that is a multiple of the
// preferred buffer size and put the remainder in the buffer.
- if (BUILTIN_EXPECT(OutBufCur == OutBufStart, false)) {
+ if (LLVM_UNLIKELY(OutBufCur == OutBufStart)) {
size_t BytesToWrite = Size - (Size % NumBytes);
write_impl(Ptr, BytesToWrite);
- copy_to_buffer(Ptr + BytesToWrite, Size - BytesToWrite);
+ size_t BytesRemaining = Size - BytesToWrite;
+ if (BytesRemaining > size_t(OutBufEnd - OutBufCur)) {
+ // Too much left over to copy into our buffer.
+ return write(Ptr + BytesToWrite, BytesRemaining);
+ }
+ copy_to_buffer(Ptr + BytesToWrite, BytesRemaining);
return *this;
}
/// stream should be immediately destroyed; the string will be empty
/// if no error occurred.
raw_fd_ostream::raw_fd_ostream(const char *Filename, std::string &ErrorInfo,
- unsigned Flags)
- : Error(false), UseAtomicWrites(false), pos(0)
-{
- assert(Filename != 0 && "Filename is null");
- // Verify that we don't have both "append" and "excl".
- assert((!(Flags & F_Excl) || !(Flags & F_Append)) &&
- "Cannot specify both 'excl' and 'append' file creation flags!");
-
+ sys::fs::OpenFlags Flags)
+ : Error(false), UseAtomicWrites(false), pos(0) {
+ assert(Filename && "Filename is null");
ErrorInfo.clear();
// Handle "-" as stdout. Note that when we do this, we consider ourself
FD = STDOUT_FILENO;
// If user requested binary then put stdout into binary mode if
// possible.
- if (Flags & F_Binary)
- sys::Program::ChangeStdoutToBinary();
+ if (!(Flags & sys::fs::F_Text))
+ sys::ChangeStdoutToBinary();
// Close stdout when we're done, to detect any output errors.
ShouldClose = true;
return;
}
- int OpenFlags = O_WRONLY|O_CREAT;
-#ifdef O_BINARY
- if (Flags & F_Binary)
- OpenFlags |= O_BINARY;
-#endif
+ std::error_code EC = sys::fs::openFileForWrite(Filename, FD, Flags);
- if (Flags & F_Append)
- OpenFlags |= O_APPEND;
- else
- OpenFlags |= O_TRUNC;
- if (Flags & F_Excl)
- OpenFlags |= O_EXCL;
-
- while ((FD = open(Filename, OpenFlags, 0664)) < 0) {
- if (errno != EINTR) {
- ErrorInfo = "Error opening output file '" + std::string(Filename) + "'";
- ShouldClose = false;
- return;
- }
+ if (EC) {
+ ErrorInfo = "Error opening output file '" + std::string(Filename) + "': " +
+ EC.message();
+ ShouldClose = false;
+ return;
}
// Ok, we successfully opened the file, so it'll need to be closed.
: raw_ostream(unbuffered), FD(fd),
ShouldClose(shouldClose), Error(false), UseAtomicWrites(false) {
#ifdef O_BINARY
- // Setting STDOUT and STDERR to binary mode is necessary in Win32
+ // Setting STDOUT to binary mode is necessary in Win32
// to avoid undesirable linefeed conversion.
- if (fd == STDOUT_FILENO || fd == STDERR_FILENO)
+ // Don't touch STDERR, or w*printf() (in assert()) would barf wide chars.
+ if (fd == STDOUT_FILENO)
setmode(fd, O_BINARY);
#endif
// has_error() and clear the error flag with clear_error() before
// destructing raw_ostream objects which may have errors.
if (has_error())
- report_fatal_error("IO failure on output stream.");
+ report_fatal_error("IO failure on output stream.", /*GenCrashDiag=*/false);
}
ssize_t ret;
// Check whether we should attempt to use atomic writes.
- if (BUILTIN_EXPECT(!UseAtomicWrites, true)) {
+ if (LLVM_LIKELY(!UseAtomicWrites)) {
ret = ::write(FD, Ptr, Size);
} else {
// Use ::writev() where available.
#if defined(HAVE_WRITEV)
- struct iovec IOV = { (void*) Ptr, Size };
+ const void *Addr = static_cast<const void *>(Ptr);
+ struct iovec IOV = {const_cast<void *>(Addr), Size };
ret = ::writev(FD, &IOV, 1);
#else
ret = ::write(FD, Ptr, Size);
return *this;
}
+raw_ostream &raw_fd_ostream::reverseColor() {
+ if (sys::Process::ColorNeedsFlush())
+ flush();
+ const char *colorcode = sys::Process::OutputReverse();
+ if (colorcode) {
+ size_t len = strlen(colorcode);
+ write(colorcode, len);
+ // don't account colors towards output characters
+ pos -= len;
+ }
+ return *this;
+}
+
bool raw_fd_ostream::is_displayed() const {
return sys::Process::FileDescriptorIsDisplayed(FD);
}
+bool raw_fd_ostream::has_colors() const {
+ return sys::Process::FileDescriptorHasColors(FD);
+}
+
//===----------------------------------------------------------------------===//
// outs(), errs(), nulls()
//===----------------------------------------------------------------------===//
/// Use it like: outs() << "foo" << "bar";
raw_ostream &llvm::outs() {
// Set buffer settings to model stdout behavior.
- // Delete the file descriptor when the program exists, forcing error
+ // Delete the file descriptor when the program exits, forcing error
// detection. If you don't want this behavior, don't use outs().
static raw_fd_ostream S(STDOUT_FILENO, true);
return S;
}
void raw_svector_ostream::write_impl(const char *Ptr, size_t Size) {
- // If we're writing bytes from the end of the buffer into the smallvector, we
- // don't need to copy the bytes, just commit the bytes because they are
- // already in the right place.
if (Ptr == OS.end()) {
- assert(OS.size() + Size <= OS.capacity() && "Invalid write_impl() call!");
- OS.set_size(OS.size() + Size);
+ // Grow the buffer to include the scratch area without copying.
+ size_t NewSize = OS.size() + Size;
+ assert(NewSize <= OS.capacity() && "Invalid write_impl() call!");
+ OS.set_size(NewSize);
} else {
- assert(GetNumBytesInBuffer() == 0 &&
- "Should be writing from buffer if some bytes in it");
- // Otherwise, do copy the bytes.
- OS.append(Ptr, Ptr+Size);
+ assert(!GetNumBytesInBuffer());
+ OS.append(Ptr, Ptr + Size);
}
- // Grow the vector if necessary.
- if (OS.capacity() - OS.size() < 64)
- OS.reserve(OS.capacity() * 2);
-
- // Update the buffer position.
+ OS.reserve(OS.size() + 64);
SetBuffer(OS.end(), OS.capacity() - OS.size());
}
projects / oota-llvm.git / blobdiff