gecko-dev/xpcom/base/nsIDUtils.h

33 строки
1.1 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef XPCOM_BASE_NSIDUTILS_H_
#define XPCOM_BASE_NSIDUTILS_H_
#include "nsID.h"
#include "nsString.h"
#include "nsTString.h"
/**
* Trims the brackets around the nsID string, since it wraps its ID with
* brackets: {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}.
*/
template <typename T>
class NSID_TrimBrackets : public nsTAutoString<T> {
public:
explicit NSID_TrimBrackets(const nsID& aID) {
nsIDToCString toCString(aID);
// The string from nsIDToCString::get() includes a null terminator.
// Thus this trims 3 characters: `{`, `}`, and the null terminator.
this->AssignASCII(toCString.get() + 1, NSID_LENGTH - 3);
}
};
using NSID_TrimBracketsUTF16 = NSID_TrimBrackets<char16_t>;
using NSID_TrimBracketsASCII = NSID_TrimBrackets<char>;
#endif // XPCOM_BASE_NSIDUTILS_H_