62 lines
1.1 KiB
C++
62 lines
1.1 KiB
C++
#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Support/ManagedStatic.h"
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#include <cassert>
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#include <xlocale.h>
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namespace {
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struct locale_holder {
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locale_holder()
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: l(newlocale(LC_CTYPE_MASK,"en_US.UTF-8",LC_GLOBAL_LOCALE))
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{
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assert(NULL!=l);
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}
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~locale_holder() {
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freelocale(l);
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}
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int mbswidth(llvm::SmallString<16> s) const {
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// this implementation assumes no '\0' in s
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assert(s.size()==strlen(s.c_str()));
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size_t size = mbstowcs_l(NULL,s.c_str(),0,l);
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assert(size!=(size_t)-1);
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if (size==0)
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return 0;
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llvm::SmallVector<wchar_t,200> ws(size);
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size = mbstowcs_l(&ws[0],s.c_str(),ws.size(),l);
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assert(ws.size()==size);
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return wcswidth_l(&ws[0],ws.size(),l);
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}
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int isprint(int c) const {
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return iswprint_l(c,l);
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}
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private:
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locale_t l;
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};
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llvm::ManagedStatic<locale_holder> l;
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}
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namespace llvm {
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namespace sys {
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namespace locale {
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int columnWidth(StringRef s) {
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int width = l->mbswidth(s);
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assert(width>=0);
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return width;
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}
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bool isPrint(int c) {
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return l->isprint(c);
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}
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}
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}
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}
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