libui/windows/debug.cpp

124 lines
2.8 KiB
C++

// 25 february 2015
#include "uipriv_windows.h"
// TODO disable logging and stopping on no-debug builds
// TODO are the newlines needed?
static void printDebug(WCHAR *msg)
{
OutputDebugStringW(msg);
}
#define debugfmt L"%s:" L ## PRIiMAX L":%s()"
HRESULT _logLastError(debugargs, const WCHAR *func, const WCHAR *s)
{
DWORD le;
WCHAR *msg;
WCHAR *formatted;
BOOL useFormatted;
le = GetLastError();
useFormatted = FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, le, 0, (LPWSTR) (&formatted), 0, NULL) != 0;
if (!useFormatted)
formatted = L"\n";
msg = debugstrf(L"[libui] " debugfmt L" %s: GetLastError() == %I32u %s",
file, line, func,
s, le, formatted);
if (useFormatted)
LocalFree(formatted); // ignore error
if (msg == NULL) {
printDebug(L"[libui] (debugstrf() failed; printing raw) ");
printDebug(file);
printDebug(func);
printDebug(s);
printDebug(L"\n");
} else {
printDebug(msg);
uiFree(msg);
}
DebugBreak();
SetLastError(le);
// a function does not have to set a last error
// if the last error we get is actually 0, then HRESULT_FROM_WIN32(0) will return S_OK (0 cast to an HRESULT, since 0 <= 0), which we don't want
// prevent this by returning E_FAIL
if (le == 0)
return E_FAIL;
return HRESULT_FROM_WIN32(le);
}
HRESULT _logHRESULT(debugargs, const WCHAR *s, HRESULT hr)
{
DWORD le;
WCHAR *msg;
WCHAR *formatted;
BOOL useFormatted;
useFormatted = FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, hr, 0, (LPWSTR) (&formatted), 0, NULL) != 0;
if (!useFormatted)
formatted = L"\n";
msg = debugstrf(L"[libui] " debugfmt L" %s: HRESULT == 0x%08I32X %s",
file, line, func,
s, hr, formatted);
if (useFormatted)
LocalFree(formatted); // ignore error
if (msg == NULL) {
printDebug(L"[libui] (debugstrf() failed; printing raw) ");
printDebug(file);
printDebug(func);
printDebug(s);
printDebug(L"\n");
} else {
printDebug(msg);
uiFree(msg);
}
DebugBreak();
return hr;
}
#define implbugmsg L"either you have or libui has a bug in a control implementation; if libui does, contact andlabs"
void _implbug(debugargs, const WCHAR *format, ...)
{
va_list ap;
WCHAR *formatted;
WCHAR *full;
const WCHAR *onerr;
va_start(ap, format);
formatted = debugvstrf(format, ap);
va_end(ap);
if (formatted == NULL) {
onerr = s;
goto bad;
}
full = debugstrf(L"[libui] " debugfmt L" " implbugmsg L" — %s\n",
file, line, func,
formatted);
if (full == NULL) {
onerr = formatted;
goto bad;
}
printDebug(full);
uiFree(full);
uiFree(formatted);
goto after;
bad:
printDebug(L"[libui] (debugstrf() failed; printing raw) ");
printDebug(implbugmsg);
printDebug(file);
printDebug(func);
printDebug(onerr);
printDebug(L"\n");
after:
DebugBreak();
abort();
}