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llvm-6502/lib/Support/Locale.cpp
Alexander Kornienko 280e5eef43 Move generic isPrint and columnWidth implementations to a separate header/source to allow using both generic and system-dependent versions on win32.
Summary:
This is needed so we can use generic columnWidthUTF8 in clang-format on
win32 simultaneously with a separate system-dependent implementations of
isPrint/columnWidth in TextDiagnostic.cpp to avoid attempts to print Unicode
characters using narrow-character interfaces (which is not supported on Windows,
and we'll have to figure out how to handle this).

Reviewers: jordan_rose

Reviewed By: jordan_rose

CC: llvm-commits, klimek

Differential Revision: http://llvm-reviews.chandlerc.com/D1559

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189952 91177308-0d34-0410-b5e6-96231b3b80d8
2013-09-04 16:00:12 +00:00

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#include "llvm/Support/Locale.h"
#include "llvm/Support/Unicode.h"
namespace llvm {
namespace sys {
namespace locale {
int columnWidth(StringRef Text) {
#if LLVM_ON_WIN32
return Text.size();
#else
return llvm::sys::unicode::columnWidthUTF8(Text);
#endif
}
bool isPrint(int UCS) {
#if LLVM_ON_WIN32
// Restrict characters that we'll try to print to the the lower part of ASCII
// except for the control characters (0x20 - 0x7E). In general one can not
// reliably output code points U+0080 and higher using narrow character C/C++
// output functions in Windows, because the meaning of the upper 128 codes is
// determined by the active code page in the console.
return ' ' <= UCS && UCS <= '~';
#else
return llvm::sys::unicode::isPrintable(UCS);
#endif
}
} // namespace locale
} // namespace sys
} // namespace llvm