package be.nikiroo.utils.serial;
+import java.io.IOException;
+import java.io.InputStream;
+import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;
-import java.util.Scanner;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Field;
import be.nikiroo.utils.IOUtils;
+import be.nikiroo.utils.NextableInputStream;
+import be.nikiroo.utils.NextableInputStreamStep;
import be.nikiroo.utils.StringUtils;
/**
private String currentFieldName;
+ /**
+ * Create a new {@link Importer}.
+ */
public Importer() {
map = new HashMap<String, Object>();
map.put("NULL", null);
this.map = map;
}
- public Importer readLine(String line) {
- try {
- processLine(line);
- } catch (Exception e) {
- throw new IllegalArgumentException(e);
- }
- return this;
- }
+ /**
+ * Read some data into this {@link Importer}: it can be the full serialised
+ * content, or a number of lines of it (any given line <b>MUST</b> be
+ * complete though) and accumulate it with the already present data.
+ *
+ * @param data
+ * the data to parse
+ *
+ * @return itself so it can be chained
+ *
+ * @throws NoSuchFieldException
+ * if the serialised data contains information about a field
+ * which does actually not exist in the class we know of
+ * @throws NoSuchMethodException
+ * if a class described in the serialised data cannot be created
+ * because it is not compatible with this code
+ * @throws ClassNotFoundException
+ * if a class described in the serialised data cannot be found
+ * @throws IOException
+ * if the content cannot be read (for instance, corrupt data)
+ * @throws NullPointerException
+ * if the stream is empty
+ */
+ public Importer read(InputStream in) throws NoSuchFieldException,
+ NoSuchMethodException, ClassNotFoundException, IOException,
+ NullPointerException {
- public Importer read(String data) {
- try {
- if (data.startsWith("ZIP:")) {
- data = StringUtils.unzip64(data.substring("ZIP:".length()));
+ // TODO: fix NexInStream: next() MUST be called first time, too
+ // TODO: NexInStream: add getBytes() (size downloaded)
+ // TODO: public InputStrem open() (open/close do nothing)
+ // TODO: public boolean eof()
+ // TODO: public nextAll(): next, but disable separation of sub-streams
+ // TODO: close(alsoCloseIncludedField)
+
+ NextableInputStream stream = new NextableInputStream(in,
+ new NextableInputStreamStep('\n'));
+
+ if (in == null || stream.eof()) {
+ if (in == null) {
+ throw new NullPointerException("InputStream is null");
}
- Scanner scan = new Scanner(data);
- scan.useDelimiter("\n");
- while (scan.hasNext()) {
- processLine(scan.next());
+ throw new NullPointerException("InputStream is empty");
+ }
+
+ while (stream.next()) {
+ boolean zip = stream.startsWiths("ZIP:");
+ boolean b64 = stream.startsWiths("B64:");
+
+ if (zip || b64) {
+ InputStream decoded = StringUtils.unbase64(stream.open(), zip);
+ try {
+ read(decoded);
+ } finally {
+ decoded.close();
+ }
+ } else {
+ processLine(stream);
}
- scan.close();
- } catch (Exception e) {
- throw new IllegalArgumentException(e);
}
+
return this;
}
- public boolean processLine(String line) throws IllegalArgumentException,
- NoSuchFieldException, SecurityException, IllegalAccessException,
- NoSuchMethodException, InstantiationException, ClassNotFoundException, InvocationTargetException {
+ /**
+ * Read a single (whole) line of serialised data into this {@link Importer}
+ * and accumulate it with the already present data.
+ *
+ * @param line
+ * the line to parse
+ *
+ * @return TRUE if we are just done with one object or sub-object
+ *
+ * @throws NoSuchFieldException
+ * if the serialised data contains information about a field
+ * which does actually not exist in the class we know of
+ * @throws NoSuchMethodException
+ * if a class described in the serialised data cannot be created
+ * because it is not compatible with this code
+ * @throws ClassNotFoundException
+ * if a class described in the serialised data cannot be found
+ * @throws IOException
+ * if the content cannot be read (for instance, corrupt data)
+ */
+ private boolean processLine(InputStream in) throws NoSuchFieldException,
+ NoSuchMethodException, ClassNotFoundException, IOException {
+
// Defer to latest child if any
if (child != null) {
- if (child.processLine(line)) {
+ if (child.processLine(in)) {
if (currentFieldName != null) {
setField(currentFieldName, child.getValue());
currentFieldName = null;
return false;
}
+ // TODO use the stream, Luke
+ String line = IOUtils.readSmallStream(in);
+
if (line.equals("{")) { // START: new child if needed
if (link != null) {
child = new Importer(map);
} else if (line.equals("}")) { // STOP: report self to parent
return true;
} else if (line.startsWith("REF ")) { // REF: create/link self
- String ref = line.substring(4).split("@")[1];
+ String[] tab = line.substring("REF ".length()).split("@");
+ String type = tab[0];
+ tab = tab[1].split(":");
+ String ref = tab[0];
+
link = map.containsKey(ref);
if (link) {
me = map.get(ref);
} else {
- me = SerialUtils.createObject(line.substring(4).split("@")[0]);
+ if (line.endsWith(":")) {
+ // construct
+ me = SerialUtils.createObject(type);
+ } else {
+ // direct value
+ int pos = line.indexOf(":");
+ String encodedValue = line.substring(pos + 1);
+ me = SerialUtils.decode(encodedValue);
+ }
map.put(ref, me);
}
- } else { // FIELD: new field
+ } else { // FIELD: new field *or* direct simple value
if (line.endsWith(":")) {
// field value is compound
currentFieldName = line.substring(0, line.length() - 1);
+ } else if (line.startsWith(":") || !line.contains(":")
+ || line.startsWith("\"") || CustomSerializer.isCustom(line)) {
+ // not a field value but a direct value
+ me = SerialUtils.decode(line);
} else {
// field value is direct
int pos = line.indexOf(":");
}
private void setField(String name, Object value)
- throws NoSuchFieldException, SecurityException,
- IllegalArgumentException, IllegalAccessException {
+ throws NoSuchFieldException {
try {
Field field = me.getClass().getDeclaredField(name);
throw new NoSuchFieldException(String.format(
"Field \"%s\" was not found in object of type \"%s\".",
name, me.getClass().getCanonicalName()));
+ } catch (Exception e) {
+ throw new NoSuchFieldException(String.format(
+ "Internal error when setting \"%s.%s\": %s", me.getClass()
+ .getCanonicalName(), name, e.getMessage()));
}
}
+ /**
+ * Find the given needle in the data and return its position (or -1 if not
+ * found).
+ *
+ * @param data
+ * the data to look through
+ * @param offset
+ * the offset at wich to start searching
+ * @param needle
+ * the needle to find
+ *
+ * @return the position of the needle if found, -1 if not found
+ */
+ private int find(byte[] data, int offset, byte[] needle) {
+ for (int i = offset; i + needle.length - 1 < data.length; i++) {
+ boolean same = true;
+ for (int j = 0; j < needle.length; j++) {
+ if (data[i + j] != needle[j]) {
+ same = false;
+ break;
+ }
+ }
+
+ if (same) {
+ return i;
+ }
+ }
+
+ return -1;
+ }
+
+ /**
+ * Return the current deserialised value.
+ *
+ * @return the current value
+ */
public Object getValue() {
return me;
}
git://git.nikiroo.be / nikiroo-utils.git / blobdiff