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/* 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/. */

#include "nsINIParserImpl.h"

#include "nsIFile.h"

#include "nsINIParser.h"
#include "nsStringEnumerator.h"
#include "nsTArray.h"
#include "mozilla/Attributes.h"

class nsINIParserImpl MOZ_FINAL :
  public nsIINIParser
{
public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIINIPARSER

  nsresult Init(nsIFile* aINIFile) {
    return mParser.Init(aINIFile);
  }

private:
  nsINIParser mParser;
};

NS_IMPL_ISUPPORTS2(nsINIParserFactory,
                   nsIINIParserFactory,
                   nsIFactory)

NS_IMETHODIMP
nsINIParserFactory::CreateINIParser(nsIFile* aINIFile,
                                    nsIINIParser* *aResult)
{
  *aResult = nullptr;

  nsCOMPtr<nsINIParserImpl> p(new nsINIParserImpl());
  if (!p)
    return NS_ERROR_OUT_OF_MEMORY;

  nsresult rv = p->Init(aINIFile);

  if (NS_SUCCEEDED(rv))
    NS_ADDREF(*aResult = p);

  return rv;
}

NS_IMETHODIMP
nsINIParserFactory::CreateInstance(nsISupports* aOuter,
                                   REFNSIID aIID,
                                   void **aResult)
{
  NS_ENSURE_NO_AGGREGATION(aOuter);

  // We are our own singleton.
  return QueryInterface(aIID, aResult);
}

NS_IMETHODIMP
nsINIParserFactory::LockFactory(bool aLock)
{
  return NS_OK;
}

NS_IMPL_ISUPPORTS1(nsINIParserImpl,
                   nsIINIParser)

static bool
SectionCB(const char* aSection, void *aClosure)
{
  nsTArray<nsCString> *strings = static_cast<nsTArray<nsCString>*>(aClosure);

  strings->AppendElement(nsDependentCString(aSection));
  return true;
}

NS_IMETHODIMP
nsINIParserImpl::GetSections(nsIUTF8StringEnumerator* *aResult)
{
  nsTArray<nsCString> *strings = new nsTArray<nsCString>;
  if (!strings)
    return NS_ERROR_OUT_OF_MEMORY;

  nsresult rv = mParser.GetSections(SectionCB, strings);
  if (NS_SUCCEEDED(rv))
    rv = NS_NewAdoptingUTF8StringEnumerator(aResult, strings);

  if (NS_FAILED(rv))
    delete strings;

  return rv;
}

static bool
KeyCB(const char* aKey, const char *aValue, void *aClosure)
{
  nsTArray<nsCString> *strings = static_cast<nsTArray<nsCString>*>(aClosure);

  strings->AppendElement(nsDependentCString(aKey));
  return true;
}

NS_IMETHODIMP
nsINIParserImpl::GetKeys(const nsACString& aSection,
                         nsIUTF8StringEnumerator* *aResult)
{
  nsTArray<nsCString> *strings = new nsTArray<nsCString>;
  if (!strings)
    return NS_ERROR_OUT_OF_MEMORY;

  nsresult rv = mParser.GetStrings(PromiseFlatCString(aSection).get(),
                                   KeyCB, strings);
  if (NS_SUCCEEDED(rv))
    rv = NS_NewAdoptingUTF8StringEnumerator(aResult, strings);

  if (NS_FAILED(rv))
    delete strings;

  return rv;

}

NS_IMETHODIMP
nsINIParserImpl::GetString(const nsACString& aSection,
                           const nsACString& aKey,
                           nsACString& aResult)
{
  return mParser.GetString(PromiseFlatCString(aSection).get(),
                           PromiseFlatCString(aKey).get(),
                           aResult);
}