#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/Format.h"
+#include "llvm/System/Program.h"
+#include "llvm/System/Process.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Config/config.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/ErrorHandling.h"
#include <ostream>
#if defined(HAVE_UNISTD_H)
raw_ostream &raw_ostream::operator<<(long N) {
if (N < 0) {
- if (OutBufCur >= OutBufEnd)
- flush_impl();
- *OutBufCur++ = '-';
-
+ *this << '-';
N = -N;
}
raw_ostream &raw_ostream::operator<<(long long N) {
if (N < 0) {
- if (OutBufCur >= OutBufEnd)
- flush_impl();
- *OutBufCur++ = '-';
-
+ *this << '-';
N = -N;
}
}
raw_ostream &raw_ostream::operator<<(const void *P) {
- // FIXME: This could be much faster if it matters.
- return *this << format("%p", P);
+ uintptr_t N = (uintptr_t) P;
+ *this << '0' << 'x';
+
+ // Zero is a special case.
+ if (N == 0)
+ return *this << '0';
+
+ char NumberBuffer[20];
+ char *EndPtr = NumberBuffer+sizeof(NumberBuffer);
+ char *CurPtr = EndPtr;
+
+ while (N) {
+ unsigned x = N % 16;
+ *--CurPtr = (x < 10 ? '0' + x : 'a' + x - 10);
+ N /= 16;
+ }
+
+ return write(CurPtr, EndPtr-CurPtr);
+}
+
+void raw_ostream::flush_nonempty() {
+ assert(OutBufCur > OutBufStart && "Invalid call to flush_nonempty.");
+ write_impl(OutBufStart, OutBufCur - OutBufStart);
+ OutBufCur = OutBufStart;
}
+raw_ostream &raw_ostream::write(unsigned char C) {
+ // Group exceptional cases into a single branch.
+ if (OutBufCur >= OutBufEnd) {
+ if (Unbuffered) {
+ write_impl(reinterpret_cast<char*>(&C), 1);
+ return *this;
+ }
+
+ if (!OutBufStart)
+ SetBufferSize();
+ else
+ flush_nonempty();
+ }
+
+ *OutBufCur++ = C;
+ return *this;
+}
raw_ostream &raw_ostream::write(const char *Ptr, unsigned Size) {
- if (OutBufCur+Size > OutBufEnd)
- flush_impl();
+ // Group exceptional cases into a single branch.
+ if (BUILTIN_EXPECT(OutBufCur+Size > OutBufEnd, false)) {
+ if (Unbuffered) {
+ write_impl(Ptr, Size);
+ return *this;
+ }
+
+ if (!OutBufStart)
+ SetBufferSize();
+ else
+ flush_nonempty();
+ }
// Handle short strings specially, memcpy isn't very good at very short
// strings.
case 0: break;
default:
// Normally the string to emit is shorter than the buffer.
- if (Size <= unsigned(OutBufEnd-OutBufStart)) {
+ if (Size <= unsigned(OutBufEnd-OutBufCur)) {
memcpy(OutBufCur, Ptr, Size);
break;
- }
+ }
- // If emitting a string larger than our buffer, emit in chunks. In this
- // case we know that we just flushed the buffer.
- while (Size) {
- unsigned NumToEmit = OutBufEnd-OutBufStart;
- if (Size < NumToEmit) NumToEmit = Size;
- assert(OutBufCur == OutBufStart);
- memcpy(OutBufStart, Ptr, NumToEmit);
- Ptr += NumToEmit;
- Size -= NumToEmit;
- OutBufCur = OutBufStart + NumToEmit;
- flush_impl();
- }
+ // Otherwise we are emitting a string larger than our buffer. We
+ // know we already flushed, so just write it out directly.
+ write_impl(Ptr, Size);
+ Size = 0;
break;
}
OutBufCur += Size;
+
return *this;
}
// Formatted output.
raw_ostream &raw_ostream::operator<<(const format_object_base &Fmt) {
- // If we have more than a few bytes left in our output buffer, try formatting
- // directly onto its end.
+ // If we have more than a few bytes left in our output buffer, try
+ // formatting directly onto its end.
+ //
+ // FIXME: This test is a bit silly, since if we don't have enough
+ // space in the buffer we will have to flush the formatted output
+ // anyway. We should just flush upfront in such cases, and use the
+ // whole buffer as our scratch pad. Note, however, that this case is
+ // also necessary for correctness on unbuffered streams.
unsigned NextBufferSize = 127;
if (OutBufEnd-OutBufCur > 3) {
unsigned BufferBytesLeft = OutBufEnd-OutBufCur;
/// occurs, information about the error is put into ErrorInfo, and the
/// 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) {
+raw_fd_ostream::raw_fd_ostream(const char *Filename, bool Binary,
+ std::string &ErrorInfo) : pos(0) {
ErrorInfo.clear();
// Handle "-" as stdout.
if (Filename[0] == '-' && Filename[1] == 0) {
FD = STDOUT_FILENO;
+ // If user requested binary then put stdout into binary mode if
+ // possible.
+ if (Binary)
+ sys::Program::ChangeStdoutToBinary();
ShouldClose = false;
return;
}
- FD = open(Filename, O_WRONLY|O_CREAT|O_TRUNC, 0644);
+ int Flags = O_WRONLY|O_CREAT|O_TRUNC;
+#ifdef O_BINARY
+ if (Binary)
+ Flags |= O_BINARY;
+#endif
+ FD = open(Filename, Flags, 0644);
if (FD < 0) {
ErrorInfo = "Error opening output file '" + std::string(Filename) + "'";
ShouldClose = false;
}
}
-void raw_fd_ostream::flush_impl() {
+void raw_fd_ostream::write_impl(const char *Ptr, unsigned Size) {
assert (FD >= 0 && "File already closed.");
- if (OutBufCur-OutBufStart)
- ::write(FD, OutBufStart, OutBufCur-OutBufStart);
- HandleFlush();
+ pos += Size;
+ if (::write(FD, Ptr, Size) != (ssize_t) Size)
+ llvm_report_error("IO failure writing to output stream.");
}
void raw_fd_ostream::close() {
FD = -1;
}
+uint64_t raw_fd_ostream::seek(uint64_t off) {
+ flush();
+ pos = ::lseek(FD, off, SEEK_SET);
+ return pos;
+}
+
+raw_ostream &raw_fd_ostream::changeColor(enum Colors colors, bool bold,
+ bool bg) {
+ if (sys::Process::ColorNeedsFlush())
+ flush();
+ const char *colorcode =
+ (colors == SAVEDCOLOR) ? sys::Process::OutputBold(bg)
+ : sys::Process::OutputColor(colors, bold, bg);
+ if (colorcode) {
+ unsigned len = strlen(colorcode);
+ write(colorcode, len);
+ // don't account colors towards output characters
+ pos -= len;
+ }
+ return *this;
+}
+
+raw_ostream &raw_fd_ostream::resetColor() {
+ if (sys::Process::ColorNeedsFlush())
+ flush();
+ const char *colorcode = sys::Process::ResetColor();
+ if (colorcode) {
+ unsigned len = strlen(colorcode);
+ write(colorcode, len);
+ // don't account colors towards output characters
+ pos -= len;
+ }
+ return *this;
+}
+
//===----------------------------------------------------------------------===//
// raw_stdout/err_ostream
//===----------------------------------------------------------------------===//
raw_stdout_ostream::raw_stdout_ostream():raw_fd_ostream(STDOUT_FILENO, false) {}
-raw_stderr_ostream::raw_stderr_ostream():raw_fd_ostream(STDERR_FILENO, false) {}
+raw_stderr_ostream::raw_stderr_ostream():raw_fd_ostream(STDERR_FILENO, false,
+ true) {}
// An out of line virtual method to provide a home for the class vtable.
void raw_stdout_ostream::handle() {}
flush();
}
-/// flush_impl - The is the piece of the class that is implemented by
-/// subclasses. This outputs the currently buffered data and resets the
-/// buffer to empty.
-void raw_os_ostream::flush_impl() {
- if (OutBufCur-OutBufStart)
- OS.write(OutBufStart, OutBufCur-OutBufStart);
- HandleFlush();
+void raw_os_ostream::write_impl(const char *Ptr, unsigned Size) {
+ OS.write(Ptr, Size);
+}
+
+uint64_t raw_os_ostream::current_pos() { return OS.tellp(); }
+
+uint64_t raw_os_ostream::tell() {
+ return (uint64_t)OS.tellp() + GetNumBytesInBuffer();
}
//===----------------------------------------------------------------------===//
flush();
}
-/// flush_impl - The is the piece of the class that is implemented by
-/// subclasses. This outputs the currently buffered data and resets the
-/// buffer to empty.
-void raw_string_ostream::flush_impl() {
- if (OutBufCur-OutBufStart)
- OS.append(OutBufStart, OutBufCur-OutBufStart);
- HandleFlush();
+void raw_string_ostream::write_impl(const char *Ptr, unsigned Size) {
+ OS.append(Ptr, Size);
}
//===----------------------------------------------------------------------===//
flush();
}
-/// flush_impl - The is the piece of the class that is implemented by
-/// subclasses. This outputs the currently buffered data and resets the
-/// buffer to empty.
-void raw_svector_ostream::flush_impl() {
- if (OutBufCur-OutBufStart)
- OS.append(OutBufStart, OutBufCur);
- HandleFlush();
+void raw_svector_ostream::write_impl(const char *Ptr, unsigned Size) {
+ OS.append(Ptr, Ptr + Size);
}
+uint64_t raw_svector_ostream::current_pos() { return OS.size(); }
+
+uint64_t raw_svector_ostream::tell() {
+ return OS.size() + GetNumBytesInBuffer();
+}
projects / oota-llvm.git / blobdiff