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/*
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "FontFamilyValue.h"
namespace WebCore {
// FIXME: This appears identical to isCSSTokenizerIdentifier from CSSPrimitiveValue.cpp, we should use a single function.
static bool isValidCSSIdentifier(const String& string)
{
unsigned length = string.length();
if (!length)
return false;
const UChar* characters = string.characters();
UChar c = characters[0];
if (!(c == '_' || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '-' || c >= 0x80))
return false;
for (unsigned i = 1; i < length; ++i) {
c = characters[i];
if (!(c == '_' || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '-' || c >= 0x80))
return false;
}
return true;
}
// Quotes the string if it needs quoting.
// We use single quotes because serialization code uses double quotes, and it's nice to
// avoid having to turn all the quote marks into " as we would have to.
static String quoteStringIfNeeded(const String& string)
{
if (isValidCSSIdentifier(string))
return string;
// FIXME: Also need to transform control characters (00-1F) into \ sequences.
// FIXME: This is inefficient -- should use a Vector<UChar> instead.
String quotedString = string;
quotedString.replace('\\', "\\\\");
quotedString.replace('\'', "\\'");
return "'" + quotedString + "'";
}
FontFamilyValue::FontFamilyValue(const String& familyName)
: CSSPrimitiveValue(String(), CSS_STRING)
, m_familyName(familyName)
{
// If there is anything in parentheses or square brackets at the end, delete it.
// FIXME: Do we really need this? The original code mentioned "a language tag in
// braces at the end" and "[Xft] qualifiers", but it's not clear either of those
// is in active use on the web.
unsigned length = m_familyName.length();
while (length >= 3) {
UChar startCharacter = 0;
switch (m_familyName[length - 1]) {
case ']':
startCharacter = '[';
break;
case ')':
startCharacter = '(';
break;
}
if (!startCharacter)
break;
unsigned first = 0;
for (unsigned i = length - 2; i > 0; --i) {
if (m_familyName[i - 1] == ' ' && m_familyName[i] == startCharacter)
first = i - 1;
}
if (!first)
break;
length = first;
}
m_familyName.truncate(length);
}
void FontFamilyValue::appendSpaceSeparated(const UChar* characters, unsigned length)
{
m_familyName.append(' ');
m_familyName.append(characters, length);
}
String FontFamilyValue::cssText() const
{
return quoteStringIfNeeded(m_familyName);
}
}
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