зеркало из https://github.com/mozilla/gecko-dev.git
367 строки
9.0 KiB
C++
367 строки
9.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsString.h"
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#include "nsCharTraits.h"
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#include "nsXPCOMStrings.h"
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#include "nsNativeCharsetUtils.h"
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/* ------------------------------------------------------------------------- */
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XPCOM_API(nsresult)
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NS_StringContainerInit(nsStringContainer& aContainer)
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{
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NS_ASSERTION(sizeof(nsStringContainer_base) >= sizeof(nsString),
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"nsStringContainer is not large enough");
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// use placement new to avoid heap allocating nsString object
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new (&aContainer) nsString();
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return NS_OK;
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}
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XPCOM_API(nsresult)
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NS_StringContainerInit2(nsStringContainer& aContainer,
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const char16_t* aData,
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uint32_t aDataLength,
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uint32_t aFlags)
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{
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NS_ASSERTION(sizeof(nsStringContainer_base) >= sizeof(nsString),
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"nsStringContainer is not large enough");
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if (!aData) {
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new (&aContainer) nsString();
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} else {
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if (aDataLength == UINT32_MAX) {
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if (NS_WARN_IF(aFlags & NS_STRING_CONTAINER_INIT_SUBSTRING)) {
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return NS_ERROR_INVALID_ARG;
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}
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aDataLength = nsCharTraits<char16_t>::length(aData);
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}
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if (aFlags & (NS_STRING_CONTAINER_INIT_DEPEND |
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NS_STRING_CONTAINER_INIT_ADOPT)) {
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uint32_t flags;
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if (aFlags & NS_STRING_CONTAINER_INIT_SUBSTRING) {
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flags = nsSubstring::F_NONE;
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} else {
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flags = nsSubstring::F_TERMINATED;
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}
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if (aFlags & NS_STRING_CONTAINER_INIT_ADOPT) {
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flags |= nsSubstring::F_OWNED;
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}
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new (&aContainer) nsSubstring(const_cast<char16_t*>(aData),
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aDataLength, flags);
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} else {
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new (&aContainer) nsString(aData, aDataLength);
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}
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}
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return NS_OK;
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}
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XPCOM_API(void)
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NS_StringContainerFinish(nsStringContainer& aContainer)
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{
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// call the nsString dtor
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reinterpret_cast<nsString*>(&aContainer)->~nsString();
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}
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/* ------------------------------------------------------------------------- */
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XPCOM_API(uint32_t)
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NS_StringGetData(const nsAString& aStr, const char16_t** aData,
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bool* aTerminated)
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{
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if (aTerminated) {
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*aTerminated = aStr.IsTerminated();
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}
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*aData = aStr.BeginReading();
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return aStr.Length();
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}
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XPCOM_API(uint32_t)
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NS_StringGetMutableData(nsAString& aStr, uint32_t aDataLength,
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char16_t** aData)
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{
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if (aDataLength != UINT32_MAX) {
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aStr.SetLength(aDataLength);
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if (aStr.Length() != aDataLength) {
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*aData = nullptr;
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return 0;
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}
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}
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*aData = aStr.BeginWriting();
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return aStr.Length();
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}
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XPCOM_API(char16_t*)
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NS_StringCloneData(const nsAString& aStr)
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{
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return ToNewUnicode(aStr);
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}
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XPCOM_API(nsresult)
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NS_StringSetData(nsAString& aStr, const char16_t* aData, uint32_t aDataLength)
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{
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aStr.Assign(aData, aDataLength);
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return NS_OK; // XXX report errors
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}
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XPCOM_API(nsresult)
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NS_StringSetDataRange(nsAString& aStr,
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uint32_t aCutOffset, uint32_t aCutLength,
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const char16_t* aData, uint32_t aDataLength)
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{
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if (aCutOffset == UINT32_MAX) {
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// append case
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if (aData) {
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aStr.Append(aData, aDataLength);
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}
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return NS_OK; // XXX report errors
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}
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if (aCutLength == UINT32_MAX) {
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aCutLength = aStr.Length() - aCutOffset;
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}
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if (aData) {
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if (aDataLength == UINT32_MAX) {
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aStr.Replace(aCutOffset, aCutLength, nsDependentString(aData));
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} else {
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aStr.Replace(aCutOffset, aCutLength, Substring(aData, aDataLength));
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}
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} else {
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aStr.Cut(aCutOffset, aCutLength);
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}
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return NS_OK; // XXX report errors
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}
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XPCOM_API(nsresult)
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NS_StringCopy(nsAString& aDest, const nsAString& aSrc)
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{
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aDest.Assign(aSrc);
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return NS_OK; // XXX report errors
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}
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XPCOM_API(void)
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NS_StringSetIsVoid(nsAString& aStr, const bool aIsVoid)
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{
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aStr.SetIsVoid(aIsVoid);
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}
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XPCOM_API(bool)
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NS_StringGetIsVoid(const nsAString& aStr)
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{
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return aStr.IsVoid();
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}
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/* ------------------------------------------------------------------------- */
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XPCOM_API(nsresult)
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NS_CStringContainerInit(nsCStringContainer& aContainer)
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{
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NS_ASSERTION(sizeof(nsStringContainer_base) >= sizeof(nsCString),
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"nsCStringContainer is not large enough");
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// use placement new to avoid heap allocating nsCString object
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new (&aContainer) nsCString();
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return NS_OK;
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}
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XPCOM_API(nsresult)
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NS_CStringContainerInit2(nsCStringContainer& aContainer,
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const char* aData,
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uint32_t aDataLength,
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uint32_t aFlags)
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{
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NS_ASSERTION(sizeof(nsStringContainer_base) >= sizeof(nsCString),
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"nsStringContainer is not large enough");
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if (!aData) {
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new (&aContainer) nsCString();
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} else {
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if (aDataLength == UINT32_MAX) {
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if (NS_WARN_IF(aFlags & NS_CSTRING_CONTAINER_INIT_SUBSTRING)) {
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return NS_ERROR_INVALID_ARG;
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}
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aDataLength = nsCharTraits<char>::length(aData);
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}
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if (aFlags & (NS_CSTRING_CONTAINER_INIT_DEPEND |
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NS_CSTRING_CONTAINER_INIT_ADOPT)) {
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uint32_t flags;
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if (aFlags & NS_CSTRING_CONTAINER_INIT_SUBSTRING) {
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flags = nsCSubstring::F_NONE;
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} else {
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flags = nsCSubstring::F_TERMINATED;
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}
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if (aFlags & NS_CSTRING_CONTAINER_INIT_ADOPT) {
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flags |= nsCSubstring::F_OWNED;
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}
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new (&aContainer) nsCSubstring(const_cast<char*>(aData),
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aDataLength, flags);
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} else {
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new (&aContainer) nsCString(aData, aDataLength);
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}
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}
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return NS_OK;
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}
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XPCOM_API(void)
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NS_CStringContainerFinish(nsCStringContainer& aContainer)
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{
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// call the nsCString dtor
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reinterpret_cast<nsCString*>(&aContainer)->~nsCString();
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}
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/* ------------------------------------------------------------------------- */
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XPCOM_API(uint32_t)
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NS_CStringGetData(const nsACString& aStr, const char** aData,
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bool* aTerminated)
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{
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if (aTerminated) {
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*aTerminated = aStr.IsTerminated();
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}
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*aData = aStr.BeginReading();
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return aStr.Length();
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}
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XPCOM_API(uint32_t)
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NS_CStringGetMutableData(nsACString& aStr, uint32_t aDataLength, char** aData)
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{
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if (aDataLength != UINT32_MAX) {
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aStr.SetLength(aDataLength);
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if (aStr.Length() != aDataLength) {
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*aData = nullptr;
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return 0;
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}
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}
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*aData = aStr.BeginWriting();
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return aStr.Length();
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}
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XPCOM_API(char*)
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NS_CStringCloneData(const nsACString& aStr)
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{
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return ToNewCString(aStr);
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}
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XPCOM_API(nsresult)
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NS_CStringSetData(nsACString& aStr, const char* aData, uint32_t aDataLength)
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{
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aStr.Assign(aData, aDataLength);
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return NS_OK; // XXX report errors
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}
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XPCOM_API(nsresult)
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NS_CStringSetDataRange(nsACString& aStr,
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uint32_t aCutOffset, uint32_t aCutLength,
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const char* aData, uint32_t aDataLength)
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{
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if (aCutOffset == UINT32_MAX) {
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// append case
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if (aData) {
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aStr.Append(aData, aDataLength);
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}
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return NS_OK; // XXX report errors
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}
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if (aCutLength == UINT32_MAX) {
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aCutLength = aStr.Length() - aCutOffset;
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}
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if (aData) {
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if (aDataLength == UINT32_MAX) {
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aStr.Replace(aCutOffset, aCutLength, nsDependentCString(aData));
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} else {
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aStr.Replace(aCutOffset, aCutLength, Substring(aData, aDataLength));
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}
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} else {
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aStr.Cut(aCutOffset, aCutLength);
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}
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return NS_OK; // XXX report errors
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}
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XPCOM_API(nsresult)
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NS_CStringCopy(nsACString& aDest, const nsACString& aSrc)
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{
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aDest.Assign(aSrc);
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return NS_OK; // XXX report errors
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}
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XPCOM_API(void)
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NS_CStringSetIsVoid(nsACString& aStr, const bool aIsVoid)
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{
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aStr.SetIsVoid(aIsVoid);
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}
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XPCOM_API(bool)
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NS_CStringGetIsVoid(const nsACString& aStr)
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{
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return aStr.IsVoid();
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}
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/* ------------------------------------------------------------------------- */
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XPCOM_API(nsresult)
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NS_CStringToUTF16(const nsACString& aSrc,
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nsCStringEncoding aSrcEncoding,
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nsAString& aDest)
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{
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switch (aSrcEncoding) {
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case NS_CSTRING_ENCODING_ASCII:
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CopyASCIItoUTF16(aSrc, aDest);
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break;
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case NS_CSTRING_ENCODING_UTF8:
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CopyUTF8toUTF16(aSrc, aDest);
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break;
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case NS_CSTRING_ENCODING_NATIVE_FILESYSTEM:
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NS_CopyNativeToUnicode(aSrc, aDest);
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break;
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default:
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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return NS_OK; // XXX report errors
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}
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XPCOM_API(nsresult)
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NS_UTF16ToCString(const nsAString& aSrc,
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nsCStringEncoding aDestEncoding,
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nsACString& aDest)
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{
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switch (aDestEncoding) {
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case NS_CSTRING_ENCODING_ASCII:
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LossyCopyUTF16toASCII(aSrc, aDest);
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break;
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case NS_CSTRING_ENCODING_UTF8:
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CopyUTF16toUTF8(aSrc, aDest);
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break;
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case NS_CSTRING_ENCODING_NATIVE_FILESYSTEM:
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NS_CopyUnicodeToNative(aSrc, aDest);
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break;
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default:
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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return NS_OK; // XXX report errors
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}
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