/* -*- 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/. */

#include "PolicyTokenizer.h"

static LogModule*

GetPolicyTokenizerLog()

{

  static LazyLogModule gPolicyTokenizerPRLog("PolicyTokenizer");

  return gPolicyTokenizerPRLog;

}

#define POLICYTOKENIZERLOG(args) MOZ_LOG(GetPolicyTokenizerLog(), mozilla::LogLevel::Debug, args)

static const char16_t SEMICOL = ';';

PolicyTokenizer::PolicyTokenizer(const char16_t* aStart,

                                 const char16_t* aEnd)

  : mCurChar(aStart)

  , mEndChar(aEnd)

{

  POLICYTOKENIZERLOG(("PolicyTokenizer::PolicyTokenizer"));

}

PolicyTokenizer::~PolicyTokenizer()

{

  POLICYTOKENIZERLOG(("PolicyTokenizer::~PolicyTokenizer"));

}

void

PolicyTokenizer::generateNextToken()

{

  skipWhiteSpaceAndSemicolon();

  while (!atEnd() &&

         !nsContentUtils::IsHTMLWhitespace(*mCurChar) &&

         *mCurChar != SEMICOL) {

    mCurToken.Append(*mCurChar++);

  }

  POLICYTOKENIZERLOG(("PolicyTokenizer::generateNextToken: %s", NS_ConvertUTF16toUTF8(mCurToken).get()));

}

void

PolicyTokenizer::generateTokens(policyTokens& outTokens)

{

  POLICYTOKENIZERLOG(("PolicyTokenizer::generateTokens"));

  // dirAndSrcs holds one set of [ name, src, src, src, ... ]

  nsTArray <nsString> dirAndSrcs;

  while (!atEnd()) {

    generateNextToken();

    dirAndSrcs.AppendElement(mCurToken);

    skipWhiteSpace();

    if (atEnd() || accept(SEMICOL)) {

      outTokens.AppendElement(dirAndSrcs);

      dirAndSrcs.Clear();

    }

  }

}

void

PolicyTokenizer::tokenizePolicy(const nsAString &aPolicyString,

                                policyTokens& outTokens)

{

  POLICYTOKENIZERLOG(("PolicyTokenizer::tokenizePolicy"));

  PolicyTokenizer tokenizer(aPolicyString.BeginReading(),

                            aPolicyString.EndReading());

  tokenizer.generateTokens(outTokens);

}