C++ nsAString::FindChar方法代码示例

void
WifiProxyService::DispatchWifiEvent(const nsAString& aEvent, const nsACString& aInterface)
{
  MOZ_ASSERT(NS_IsMainThread());

#if ANDROID_VERSION < 19
  mListener->OnWaitEvent(aEvent, aInterface);
#else
  // The interface might be embedded in the event string such as
  // "IFNAME=wlan0 CTRL-EVENT-BSS-ADDED 65 3c:94:d5:7c:11:8b".
  // Parse the interface name from the event string and use p2p0
  // as the default interface if "IFNAME" is not found.
  nsAutoString event;
  nsAutoString embeddedInterface(NS_LITERAL_STRING("p2p0"));
  if (StringBeginsWith(aEvent, NS_LITERAL_STRING("IFNAME"))) {
    int32_t ifnameFrom = aEvent.FindChar('=') + 1;
    int32_t ifnameTo = aEvent.FindChar(' ') - 1;
    embeddedInterface = Substring(aEvent, ifnameFrom, ifnameTo - ifnameFrom + 1);
    event = Substring(aEvent, aEvent.FindChar(' ') + 1);
  }
  else {
    event = aEvent;
  }
  mListener->OnWaitEvent(event, NS_ConvertUTF16toUTF8(embeddedInterface));
#endif
}

static void
__ReplaceChar (nsAString &string, const PRUnichar replace, const PRUnichar with)
{
  PRInt32 i = string.FindChar (replace);
  while (i >= 0) {
    string.Replace (i, 1, &with, 1);
    i = string.FindChar (replace);
  }
}

NS_IMETHODIMP    
nsEditorSpellCheck::SetCurrentDictionary(const nsAString& aDictionary)
{
  NS_ENSURE_TRUE(mSpellChecker, NS_ERROR_NOT_INITIALIZED);

  if (!mUpdateDictionaryRunning) {

    nsDefaultStringComparator comparator;
    nsAutoString langCode;
    PRInt32 dashIdx = aDictionary.FindChar('-');
    if (dashIdx != -1) {
      langCode.Assign(Substring(aDictionary, 0, dashIdx));
    } else {
      langCode.Assign(aDictionary);
    }

    if (mPreferredLang.IsEmpty() || !nsStyleUtil::DashMatchCompare(mPreferredLang, langCode, comparator)) {
      // When user sets dictionary manually, we store this value associated
      // with editor url.
      gDictionaryStore->StoreCurrentDictionary(mEditor, aDictionary);
    } else {
      // If user sets a dictionary matching (even partially), lang defined by
      // document, we consider content pref has been canceled, and we clear it.
      gDictionaryStore->ClearCurrentDictionary(mEditor);
    }

    // Also store it in as a preference. It will be used as a default value
    // when everything else fails.
    Preferences::SetString("spellchecker.dictionary", aDictionary);
  }
  return mSpellChecker->SetCurrentDictionary(aDictionary);
}

nsTemplateCondition::nsTemplateCondition(nsIAtom* aSourceVariable,
                                         const nsAString& aRelation,
                                         const nsAString& aTargets,
                                         bool aIgnoreCase,
                                         bool aNegate,
                                         bool aIsMultiple)
    : mSourceVariable(aSourceVariable),
      mIgnoreCase(aIgnoreCase),
      mNegate(aNegate),
      mNext(nullptr)
{
    SetRelation(aRelation);

    if (aIsMultiple) {
        PRInt32 start = 0, end = 0;
        while ((end = aTargets.FindChar(',',start)) >= 0) {
            if (end > start) {
                mTargetList.AppendElement(Substring(aTargets, start, end - start));
            }
            start = end + 1;
        }
        if (start < PRInt32(aTargets.Length())) {
            mTargetList.AppendElement(Substring(aTargets, start));
        }
    }
    else {
        mTargetList.AppendElement(aTargets);
    }

    MOZ_COUNT_CTOR(nsTemplateCondition);
}

static void
RemoveCharsetFromFontSubstitute(nsAString &aName)
{
    int32_t comma = aName.FindChar(PRUnichar(','));
    if (comma >= 0)
        aName.Truncate(comma);
}

/* static */ void
PeerIdentity::GetUser(const nsAString& aPeerIdentity, nsAString& aUser)
{
  int32_t at = aPeerIdentity.FindChar('@');
  if (at >= 0) {
    aUser = Substring(aPeerIdentity, 0, at);
  } else {
    aUser.Truncate();
  }
}

nsresult
    nsSOAPUtils::GetNamespaceURI(nsISOAPEncoding * aEncoding,
                                 nsIDOMElement * aScope,
                                 const nsAString & aQName,
                                 nsAString & aURI)
{
  aURI.Truncate();
  PRInt32 i = aQName.FindChar(':');
  if (i < 0) {
    return NS_OK;
  }
  nsAutoString prefix;
  prefix = Substring(aQName, 0, i);

  nsAutoString result;
  if (prefix.Equals(gSOAPStrings->kXMLPrefix)) {
    result.Assign(gSOAPStrings->kXMLNamespaceURI);
  }
  else {

    nsresult rc;
    nsCOMPtr<nsIDOMNode> current = aScope;
    nsCOMPtr<nsIDOMNamedNodeMap> attrs;
    nsCOMPtr<nsIDOMNode> temp;
    nsAutoString value;
    while (current) {
      rc = current->GetAttributes(getter_AddRefs(attrs));
      if (NS_FAILED(rc))
        return rc;
      if (attrs) {
        rc = attrs->GetNamedItemNS(gSOAPStrings->kXMLNamespaceNamespaceURI, prefix,
                                   getter_AddRefs(temp));
        if (NS_FAILED(rc))
          return rc;
        if (temp) {
          rc = temp->GetNodeValue(result);
          if (NS_FAILED(rc))
            return rc;
          break;
        }
      }
      rc = current->GetParentNode(getter_AddRefs(temp));
      if (NS_FAILED(rc))
        return rc;
      current = temp;
    }
    if (!current)
      return SOAP_EXCEPTION(NS_ERROR_FAILURE,"SOAP_NAMESPACE", "Unable to resolve prefix in attribute value to namespace URI");
  }
  if (aEncoding) {
    return aEncoding->GetInternalSchemaURI(result,aURI);
  }
  aURI.Assign(result);
  return NS_OK;
}

const nsDependentSubstring XMLUtils::getLocalPart(const nsAString& src)
{
    // Anything after ':' is the local part of the name
    PRInt32 idx = src.FindChar(':');
    if (idx == kNotFound) {
        return Substring(src, 0, src.Length());
    }

    NS_ASSERTION(idx > 0, "This QName looks invalid.");
    return Substring(src, idx + 1, src.Length() - (idx + 1));
}

nsresult
    nsSOAPUtils::GetLocalName(const nsAString & aQName,
                              nsAString & aLocalName)
{
  PRInt32 i = aQName.FindChar(':');
  if (i < 0)
    aLocalName = aQName;
  else
    aLocalName = Substring(aQName, i+1, aQName.Length() - (i+1));
  return NS_OK;
}

static
void ProcessLengthValue(const nsAString * aInputString, nsAString & aOutputString,
                        const char * aDefaultValueString,
                        const char * aPrependString, const char* aAppendString)
{
  aOutputString.Truncate();
  if (aInputString) {
    aOutputString.Append(*aInputString);
    if (-1 == aOutputString.FindChar(char16_t('%'))) {
      aOutputString.AppendLiteral("px");
    }
  }
}

nsresult
txStylesheetCompilerState::init(const nsAString& aStylesheetURI,
                                txStylesheet* aStylesheet,
                                txListIterator* aInsertPosition)
{
    NS_ASSERTION(!aStylesheet || aInsertPosition,
                 "must provide insertposition if loading subsheet");
    mStylesheetURI = aStylesheetURI;
    // Check for fragment identifier of an embedded stylesheet.
    int32_t fragment = aStylesheetURI.FindChar('#') + 1;
    if (fragment > 0) {
        int32_t fragmentLength = aStylesheetURI.Length() - fragment;
        if (fragmentLength > 0) {
            // This is really an embedded stylesheet, not just a
            // "url#". We may want to unescape the fragment.
            mTarget = Substring(aStylesheetURI, (uint32_t)fragment,
                                fragmentLength);
            mEmbedStatus = eNeedEmbed;
            mHandlerTable = gTxEmbedHandler;
        }
    }
    nsresult rv = NS_OK;
    if (aStylesheet) {
        mStylesheet = aStylesheet;
        mToplevelIterator = *aInsertPosition;
        mIsTopCompiler = false;
    }
    else {
        mStylesheet = new txStylesheet;
        NS_ENSURE_TRUE(mStylesheet, NS_ERROR_OUT_OF_MEMORY);
        
        rv = mStylesheet->init();
        NS_ENSURE_SUCCESS(rv, rv);
        
        mToplevelIterator =
            txListIterator(&mStylesheet->mRootFrame->mToplevelItems);
        mToplevelIterator.next(); // go to the end of the list
        mIsTopCompiler = true;
    }
   
    mElementContext = new txElementContext(aStylesheetURI);
    NS_ENSURE_TRUE(mElementContext && mElementContext->mMappings,
                   NS_ERROR_OUT_OF_MEMORY);

    // Push the "old" txElementContext
    rv = pushObject(0);
    NS_ENSURE_SUCCESS(rv, rv);
    
    return NS_OK;
}

NS_IMETHODIMP    
nsEditorSpellCheck::SetCurrentDictionary(const nsAString& aDictionary)
{
  NS_ENSURE_TRUE(mSpellChecker, NS_ERROR_NOT_INITIALIZED);

  nsRefPtr<nsEditorSpellCheck> kungFuDeathGrip = this;

  // The purpose of mUpdateDictionaryRunning is to avoid doing all of this if
  // UpdateCurrentDictionary's helper method DictionaryFetched, which calls us,
  // is on the stack.
  if (!mUpdateDictionaryRunning) {

    // Ignore pending dictionary fetchers by increasing this number.
    mDictionaryFetcherGroup++;

    nsDefaultStringComparator comparator;
    nsAutoString langCode;
    int32_t dashIdx = aDictionary.FindChar('-');
    if (dashIdx != -1) {
      langCode.Assign(Substring(aDictionary, 0, dashIdx));
    } else {
      langCode.Assign(aDictionary);
    }
    uint32_t flags = 0;
    mEditor->GetFlags(&flags);
    if (!(flags & nsIPlaintextEditor::eEditorMailMask)) {
      if (mPreferredLang.IsEmpty() ||
          !nsStyleUtil::DashMatchCompare(mPreferredLang, langCode, comparator)) {
        // When user sets dictionary manually, we store this value associated
        // with editor url.
        StoreCurrentDictionary(mEditor, aDictionary);
      } else {
        // If user sets a dictionary matching (even partially), lang defined by
        // document, we consider content pref has been canceled, and we clear it.
        ClearCurrentDictionary(mEditor);
      }

      // Also store it in as a preference. It will be used as a default value
      // when everything else fails but we don't want this for mail composer
      // because it has spellchecked dictionary settings in Preferences.
      Preferences::SetString("spellchecker.dictionary", aDictionary);
    }
  }
  return mSpellChecker->SetCurrentDictionary(aDictionary);
}

PRBool
nsHTMLContentSerializer::IsJavaScript(nsIAtom* aAttrNameAtom, const nsAString& aValueString)
{
    if (aAttrNameAtom == nsGkAtoms::href ||
            aAttrNameAtom == nsGkAtoms::src) {
        static const char kJavaScript[] = "javascript";
        PRInt32 pos = aValueString.FindChar(':');
        if (pos < (PRInt32)(sizeof kJavaScript - 1))
            return PR_FALSE;
        nsAutoString scheme(Substring(aValueString, 0, pos));
        scheme.StripWhitespace();
        if ((scheme.Length() == (sizeof kJavaScript - 1)) &&
                scheme.EqualsIgnoreCase(kJavaScript))
            return PR_TRUE;
        else
            return PR_FALSE;
    }

    return nsContentUtils::IsEventAttributeName(aAttrNameAtom,
            EventNameType_HTML);
}

nsresult
nsSMILTimedElement::SetBeginOrEndSpec(const nsAString& aSpec,
                                      PRBool aIsBegin)
{
  nsRefPtr<nsSMILTimeValueSpec> spec;
  SMILTimeValueSpecList& timeSpecsList = aIsBegin ? mBeginSpecs : mEndSpecs;
  nsTArray<nsSMILInstanceTime>& instancesList
    = aIsBegin ? mBeginInstances : mEndInstances;

  timeSpecsList.Clear();
  instancesList.Clear();
  HardReset(); // XXX Need to take care of time dependents here

  PRInt32 start;
  PRInt32 end = -1;
  PRInt32 length;

  do {
    start = end + 1;
    end = aSpec.FindChar(';', start);
    length = (end == -1) ? -1 : end - start;
    spec = NS_NewSMILTimeValueSpec(this, aIsBegin,
                                   Substring(aSpec, start, length));

    if (spec)
      timeSpecsList.AppendElement(spec);
  } while (end != -1 && spec);

  if (!spec) {
    timeSpecsList.Clear();
    instancesList.Clear();
    HardReset();
    return NS_ERROR_FAILURE;
  }

  UpdateCurrentInterval();

  return NS_OK;
}

PRBool
nsHTMLContentSerializer::IsJavaScript(nsIAtom* aAttrNameAtom, const nsAString& aValueString)
{
  if (aAttrNameAtom == nsHTMLAtoms::href ||
      aAttrNameAtom == nsHTMLAtoms::src) {
    static const char kJavaScript[] = "javascript";
    PRInt32 pos = aValueString.FindChar(':');
    if (pos < (PRInt32)(sizeof kJavaScript - 1))
        return PR_FALSE;
    nsAutoString scheme(Substring(aValueString, 0, pos));
    scheme.StripWhitespace();
    if ((scheme.Length() == (sizeof kJavaScript - 1)) &&
        scheme.EqualsIgnoreCase(kJavaScript))
      return PR_TRUE;
    else
      return PR_FALSE;  
  }

  PRBool result = 
                 (aAttrNameAtom == nsLayoutAtoms::onblur)      || (aAttrNameAtom == nsLayoutAtoms::onchange)
              || (aAttrNameAtom == nsLayoutAtoms::onclick)     || (aAttrNameAtom == nsLayoutAtoms::ondblclick)
              || (aAttrNameAtom == nsLayoutAtoms::onfocus)     || (aAttrNameAtom == nsLayoutAtoms::onkeydown)
              || (aAttrNameAtom == nsLayoutAtoms::onkeypress)  || (aAttrNameAtom == nsLayoutAtoms::onkeyup)
              || (aAttrNameAtom == nsLayoutAtoms::onload)      || (aAttrNameAtom == nsLayoutAtoms::onmousedown)
              || (aAttrNameAtom == nsLayoutAtoms::onpageshow)  || (aAttrNameAtom == nsLayoutAtoms::onpagehide)
              || (aAttrNameAtom == nsLayoutAtoms::onmousemove) || (aAttrNameAtom == nsLayoutAtoms::onmouseout)
              || (aAttrNameAtom == nsLayoutAtoms::onmouseover) || (aAttrNameAtom == nsLayoutAtoms::onmouseup)
              || (aAttrNameAtom == nsLayoutAtoms::onreset)     || (aAttrNameAtom == nsLayoutAtoms::onselect)
              || (aAttrNameAtom == nsLayoutAtoms::onsubmit)    || (aAttrNameAtom == nsLayoutAtoms::onunload)
              || (aAttrNameAtom == nsLayoutAtoms::onabort)     || (aAttrNameAtom == nsLayoutAtoms::onerror)
              || (aAttrNameAtom == nsLayoutAtoms::onpaint)     || (aAttrNameAtom == nsLayoutAtoms::onresize)
              || (aAttrNameAtom == nsLayoutAtoms::onscroll)    || (aAttrNameAtom == nsLayoutAtoms::onbroadcast)
              || (aAttrNameAtom == nsLayoutAtoms::onclose)     || (aAttrNameAtom == nsLayoutAtoms::oncontextmenu)
              || (aAttrNameAtom == nsLayoutAtoms::oncommand)   || (aAttrNameAtom == nsLayoutAtoms::oncommandupdate)
              || (aAttrNameAtom == nsLayoutAtoms::ondragdrop)  || (aAttrNameAtom == nsLayoutAtoms::ondragenter)
              || (aAttrNameAtom == nsLayoutAtoms::ondragexit)  || (aAttrNameAtom == nsLayoutAtoms::ondraggesture)
              || (aAttrNameAtom == nsLayoutAtoms::ondragover)  || (aAttrNameAtom == nsLayoutAtoms::oninput);
  return result;
}