/**
* Analyze a picture string into two sub-pictures.
*
* @param picture the picture as written (possibly two subpictures separated by a semicolon)
* @param dfs the decimal format symbols
* @return an array of two sub-pictures, the positive and the negative sub-pictures respectively.
* If there is only one sub-picture, the second one is null.
*/
private SubPicture[] getSubPictures(String picture, DecimalSymbols dfs) throws XPathException {
int[] picture4 = StringValue.expand(picture);
SubPicture[] pics = new SubPicture[2];
if (picture4.length == 0) {
XPathException err = new XPathException("format-number() picture is zero-length");
err.setErrorCode("XTDE1310");
throw err;
}
int sep = -1;
for (int c = 0; c < picture4.length; c++) {
if (picture4[c] == dfs.patternSeparator) {
if (c == 0) {
grumble("first subpicture is zero-length");
} else if (sep >= 0) {
grumble("more than one pattern separator");
} else if (sep == picture4.length - 1) {
grumble("second subpicture is zero-length");
}
sep = c;
}
}
if (sep < 0) {
pics[0] = new SubPicture(picture4, dfs);
pics[1] = null;
} else {
int[] pic0 = new int[sep];
System.arraycopy(picture4, 0, pic0, 0, sep);
int[] pic1 = new int[picture4.length - sep - 1];
System.arraycopy(picture4, sep + 1, pic1, 0, picture4.length - sep - 1);
pics[0] = new SubPicture(pic0, dfs);
pics[1] = new SubPicture(pic1, dfs);
}
return pics;
}
/**
* Insert an integer into an array of integers. This may or may not modify the supplied array.
*
* @param array the initial array
* @param used the number of items in the initial array that are used
* @param value the integer to be inserted
* @param position the position of the new integer in the final array
* @return the new array, with the new integer inserted
*/
private static int[] insert(int[] array, int used, int value, int position) {
if (used + 1 > array.length) {
int[] a2 = new int[used + 10];
System.arraycopy(array, 0, a2, 0, used);
array = a2;
}
for (int i = used - 1; i >= position; i--) {
array[i + 1] = array[i];
}
array[position] = value;
return array;
}