FontFamilyValue.cpp [plain text]
#include "config.h"
#include "FontFamilyValue.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 == '-' || 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;
}
static String quoteStringIfNeeded(const String& string)
{
if (isValidCSSIdentifier(string))
return string;
String quotedString = string;
quotedString.replace('\\', "\\\\");
quotedString.replace('\'', "\\'");
return "'" + quotedString + "'";
}
FontFamilyValue::FontFamilyValue(const String& familyName)
: CSSPrimitiveValue(String(), CSS_STRING)
, m_familyName(familyName)
{
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);
}
}