public static boolean unpack(MsgItem item, UnpackContext context) {
int pos = context.pos, pos2;
byte[] SOH = {1};
// colCount
pos2 = ByteArrayUtils.IndexOf(context.bytes, SOH, pos);
String colCountStr =
new String(ByteArrayUtils.SubArray(context.bytes, pos, pos2 - pos), context.spec.encoding);
pos = pos2 + 1;
int colCount = Integer.parseInt(colCountStr);
// rowCount
pos2 = ByteArrayUtils.IndexOf(context.bytes, SOH, pos);
String rowCountStr =
new String(ByteArrayUtils.SubArray(context.bytes, pos, pos2 - pos), context.spec.encoding);
pos = pos2 + 1;
int rowCount = Integer.parseInt(rowCountStr);
// title
String[] title = new String[colCount];
for (int i = 0; i < colCount; i++) {
pos2 = ByteArrayUtils.IndexOf(context.bytes, SOH, pos);
title[i] =
new String(
ByteArrayUtils.SubArray(context.bytes, pos, pos2 - pos), context.spec.encoding);
pos = pos2 + 1;
}
// body
MsgDocument doc = (MsgDocument) item;
MsgArray root = new MsgArray();
doc.put("root", root);
for (int i = 0; i < rowCount; i++) {
MsgStruct stru = new MsgStruct();
stru.setAttribute("name", "root");
stru.setAttribute("isarray", true);
for (int j = 0; j < colCount; j++) {
pos2 = ByteArrayUtils.IndexOf(context.bytes, SOH, pos);
String data =
new String(
ByteArrayUtils.SubArray(context.bytes, pos, pos2 - pos), context.spec.encoding);
pos = pos2 + 1;
MsgField field = new MsgField();
field.setAttribute("name", title[j]);
field.set(data);
stru.put(title[j], field);
}
root.add(stru);
}
context.length = context.bytes.length - context.pos;
return true;
}
@Override
protected Value calculate(MsgItem item, PackContext context) {
MsgField field;
// 如果v参数带有后缀 则取由后缀指定的节点
if (context.param.postfix == null) field = (MsgField) item;
else {
field = item.SelectSingleField(context.param.postfix);
if (field == null)
throw new TESException(
MsgErr.Pack.VTargetNull, "target: " + context.param.postfix + " item: " + item);
}
// 将域本身的属性添加到Processor的参数列表 Processor原有的参数的优先级为高
for (String k : item.getAttributes().keySet())
if (!context.processorParams.containsKey(k))
context.processorParams.put(k, item.getAttribute(k).str);
return new Value(field.value());
}