/**
* get next format token Note: Supported format specifieres i,d,u - decimal o - octal x,X -
* hexa-decimal c - character e,E,f,F,g,G,a,A - float/double s - string S - string with quotes y -
* boolean Supported options: #,0,-, ,+,* - flags 1-9 - width . - precision {<name>}s -
* enumeration <name> <x>s, <x>S - quoting character <x> <space>s,<space>S - accept spaces, ignore
* quotes *s - accept all to eol h,l,j,z,t - length modifier
*
* @param format format string
* @param formatIndex index in format string
* @param formatToken format token
* @return next format string index
*/
private static int getNextFormatToken(String format, int formatIndex, FormatToken formatToken) {
formatToken.token = new StringBuffer();
formatToken.length = 0;
formatToken.alternateFlag = false;
formatToken.zeroPaddingFlag = false;
formatToken.leftAdjustedFlag = false;
formatToken.blankFlag = false;
formatToken.greedyFlag = false;
formatToken.width = 0;
formatToken.precision = 0;
formatToken.lengthType = LengthTypes.INTEGER;
formatToken.quoteChar = '\0';
formatToken.enumClassName = null;
formatToken.conversionChar = '\0';
/* format start character */
assert format.charAt(formatIndex) == '%';
formatToken.token.append('%');
formatIndex++;
if (formatIndex >= format.length()) {
return -1;
}
/* flags */
while ((formatIndex < format.length())
&& ((format.charAt(formatIndex) == '#')
|| (format.charAt(formatIndex) == '0')
|| (format.charAt(formatIndex) == '-')
|| (format.charAt(formatIndex) == ' ')
|| (format.charAt(formatIndex) == '+')
|| (format.charAt(formatIndex) == '*'))) {
formatToken.token.append(format.charAt(formatIndex));
switch (format.charAt(formatIndex)) {
case '#':
formatToken.alternateFlag = true;
break;
case '0':
formatToken.zeroPaddingFlag = true;
break;
case '-':
formatToken.leftAdjustedFlag = true;
break;
case ' ':
formatToken.blankFlag = true;
break;
case '+':
formatToken.blankFlag = true;
break;
case '*':
formatToken.greedyFlag = true;
break;
default:
return -1;
}
formatIndex++;
}
if (formatIndex >= format.length()) {
return -1;
}
/* width, precision */
while ((formatIndex < format.length()) && (Character.isDigit(format.charAt(formatIndex)))) {
formatToken.token.append(format.charAt(formatIndex));
formatToken.width = formatToken.width * 10 + (format.charAt(formatIndex) - '0');
formatIndex++;
}
if (formatIndex >= format.length()) {
return -1;
}
/* precision */
if (format.charAt(formatIndex) == '.') {
formatToken.token.append(format.charAt(formatIndex));
formatIndex++;
while ((formatIndex < format.length()) && Character.isDigit(format.charAt(formatIndex))) {
formatToken.token.append(format.charAt(formatIndex));
formatToken.precision = formatToken.precision * 10 + (format.charAt(formatIndex) - '0');
formatIndex++;
}
}
/* quoting character */
if ((formatIndex + 1 < format.length())
&& (format.charAt(formatIndex) != '{')
&& ((format.charAt(formatIndex + 1) == 's') || (format.charAt(formatIndex + 1) == 'S'))) {
formatToken.quoteChar = format.charAt(formatIndex);
formatIndex++;
}
/* length modifier */
if ((formatIndex + 1 < format.length())
&& (format.charAt(formatIndex) == 'h')
&& (format.charAt(formatIndex + 1) == 'h')) {
formatToken.token.append(format.charAt(formatIndex + 0));
formatToken.token.append(format.charAt(formatIndex + 1));
formatToken.lengthType = LengthTypes.INTEGER;
formatIndex += 2;
} else if ((formatIndex < format.length()) && (format.charAt(formatIndex) == 'h')) {
formatToken.token.append(format.charAt(formatIndex));
formatToken.lengthType = LengthTypes.INTEGER;
formatIndex++;
} else if ((formatIndex + 1 < format.length())
&& (format.charAt(formatIndex) == 'l')
&& (format.charAt(formatIndex + 1) == 'l')) {
formatToken.token.append(format.charAt(formatIndex + 0));
formatToken.token.append(format.charAt(formatIndex + 1));
formatToken.lengthType = LengthTypes.LONG;
formatIndex += 2;
} else if ((formatIndex < format.length()) && (format.charAt(formatIndex) == 'l')) {
formatToken.token.append(format.charAt(formatIndex));
formatToken.lengthType = LengthTypes.LONG;
formatIndex++;
} else if ((formatIndex < format.length()) && (format.charAt(formatIndex) == 'j')) {
formatToken.token.append(format.charAt(formatIndex));
formatToken.lengthType = LengthTypes.INTEGER;
formatIndex++;
} else if ((formatIndex < format.length()) && (format.charAt(formatIndex) == 'z')) {
formatToken.token.append(format.charAt(formatIndex));
formatToken.lengthType = LengthTypes.INTEGER;
formatIndex++;
} else if ((formatIndex < format.length()) && (format.charAt(formatIndex) == 't')) {
formatToken.token.append(format.charAt(formatIndex));
formatToken.lengthType = LengthTypes.INTEGER;
formatIndex++;
}
if ((formatIndex < format.length()) && (format.charAt(formatIndex) == '{')) {
/* enum name */
formatToken.token.append(format.charAt(formatIndex));
formatIndex++;
StringBuffer buffer = new StringBuffer();
while ((formatIndex < format.length()) && (format.charAt(formatIndex) != '}')) {
char ch = format.charAt(formatIndex);
formatToken.token.append(ch);
buffer.append((ch != '.') ? ch : '$');
formatIndex++;
}
formatIndex++;
formatToken.enumClassName = buffer.toString();
}
if (formatIndex >= format.length()) {
return -1;
}
/* conversion character */
switch (format.charAt(formatIndex)) {
case 'S':
formatToken.token.append('s');
formatToken.conversionChar = 'S';
break;
default:
formatToken.token.append(format.charAt(formatIndex));
formatToken.conversionChar = format.charAt(formatIndex);
break;
}
formatIndex++;
return formatIndex;
}
