/** * (C) 1999-2003 Lars Knoll (knoll@kde.org) * Copyright (C) 2004, 2005, 2006, 2007 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #include "config.h" #include "FontFamilyValue.h" #include "PlatformString.h" #include "RegularExpression.h" namespace WebCore { 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 >= 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 instead. String quotedString = string; quotedString.replace('\\', "\\\\"); quotedString.replace('\'', "\\'"); return "'" + quotedString + "'"; } FontFamilyValue::FontFamilyValue(const DeprecatedString& string) : CSSPrimitiveValue(String(), CSS_STRING) { static const RegularExpression parenReg(" \\(.*\\)$"); static const RegularExpression braceReg(" \\[.*\\]$"); parsedFontName = string; // a language tag is often added in braces at the end. Remove it. parsedFontName.replace(parenReg, ""); // remove [Xft] qualifiers parsedFontName.replace(braceReg, ""); } String FontFamilyValue::cssText() const { return quoteStringIfNeeded(parsedFontName); } }