ziver/zutil
1
0
Fork 0
Code Issues Pull requests Activity Actions

Added integer to condition tag

Browse source
This commit is contained in:
Ziver Koc 2015-04-03 22:49:45 +00:00
parent 9db86cfa02
commit c22c866000
2 changed files with 97 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

86
src/zutil/parser/Templator.java
View file

@ -22,14 +22,15 @@
package zutil.parser;
import zutil.io.file.FileUtil;
import zutil.log.LogUtil;
import zutil.struct.MutableInt;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
@ -47,37 +48,63 @@ import java.util.logging.Logger;
* <b> {{#obj.attr}}...{{/obj.attr}} </b><br>
* Will display content between the tags if:
* key is defined,
* if the key references a list the content will be iterated
* if the key references a list or array the content will be iterated
* for every element, the element can be referenced by the tag {{.}},
* if key is a true boolean (false will not display content).</li>
* if key is a boolean with the value true,
* if key is a Integer with the value anything other then 0.</li>
* <li><b> {{^key}}</b><br>
* <b> {{^obj.attr}}...{{/obj.attr}} </b><br>
* A negative condition, will display content if:
* the key is undefined,
* the key is a empty list,
* the key is a false boolean.</li>
* the key is a zero length array,
* the key is a false boolean,
* the key is a 0 Integer</li>
* <li><b>{{! ignore me }}</b><br>
* Comment, will be ignored.</li>
* </ul>
*
* TODO: {{> file}}: include file
* TODO: {{=<% %>=}}: change delimiter
* TODO: {{obj.func()}}: execute functions
*
* @author Ziver koc
*/
public class Templator {
private static final Logger log = LogUtil.getLogger();
private HashMap<String,Object> data;
private TemplateEntity tmplRoot;
// File metadata
private File file;
private long lastModified;
/**
* A template file will be read from the disk. The template will
* be regenerated if the file changes.
*/
public Templator(File tmpl) throws IOException {
this.data = new HashMap<String, Object>();
this.file = tmpl;
parseTemplate(FileUtil.getContent(file));
this.lastModified = file.lastModified();
}
public Templator(String tmpl){
this.data = new HashMap<String, Object>();
parseTemplate(tmpl);
}
public void set(String key, Object data){
this.data.put(key, data);
}
public Object get(String key){
return this.data.get(key);
}
public void remove(String key){
this.data.remove(key);
}
/**
* Will clear all data attributes
@ -87,6 +114,16 @@ public class Templator {
}
public String compile(){
if(file != null && lastModified != file.lastModified()){
try {
log.info("Template file changed. Regenerating template...");
parseTemplate(FileUtil.getContent(file));
this.lastModified = file.lastModified();
} catch(IOException e) {
log.log(Level.WARNING, "Unable to regenerate template", e);
}
}
StringBuilder str = new StringBuilder();
if(tmplRoot != null)
tmplRoot.compile(str);
@ -207,19 +244,38 @@ public class Templator {
public void compile(StringBuilder str) {
Object obj = attrib.getObject();
if(obj != null) {
Object prevObj = get(".");
set(".", obj);
if(obj instanceof Boolean){
if ((Boolean) obj)
super.compile(str);
}
else if(obj instanceof Integer){
if ((Integer) obj > 0)
super.compile(str);
}
else if(obj instanceof Iterable){
for(Object o : (Iterable)obj){ // Iterate through the whole list
set(".", o);
super.compile(str);
}
set(".", null);
}
else if (obj.getClass().isArray()) {
int length = Array.getLength(obj);
for (int i = 0; i < length; i ++) {
set(".", Array.get(obj, i));
super.compile(str);
}
}
else
super.compile(str);
// Reset map to parent object
if(prevObj != null)
set(".", obj);
else
remove(".");
}
}
}
@ -240,10 +296,18 @@ public class Templator {
if ( ! (Boolean) obj)
super.compile(str);
}
else if(obj instanceof Integer){
if ((Integer) obj == 0)
super.compile(str);
}
else if(obj instanceof Collection) {
if (((Collection) obj).isEmpty())
super.compile(str);
}
else if(obj.getClass().isArray()) {
if (((Object[]) obj).length <= 0)
super.compile(str);
}
}
}
}
@ -269,6 +333,8 @@ public class Templator {
this.tag = tag;
String[] s = tag.trim().split("\\.", 2);
this.key = s[0];
if(this.key.isEmpty()) // tag starts with "."
this.key = ".";
if(s.length > 1)
this.attrib = s[1];
}
@ -277,7 +343,7 @@ public class Templator {
public Object getObject(){
if (data.containsKey(tag))
return data.get(tag);
else if (data.containsKey(key)) {
else if (data.containsKey(key) && data.get(key) != null) {
if (attrib != null) {
Object obj = getFieldValue(data.get(key), attrib);
if(obj != null)
@ -290,6 +356,8 @@ public class Templator {
}
protected Object getFieldValue(Object obj, String attrib){
try {
if(obj.getClass().isArray() && "length".equals(attrib))
return Array.getLength(obj);
for (Field field : obj.getClass().getDeclaredFields()) {
if(field.getName().equals(attrib)) {
field.setAccessible(true);

20
src/zutil/test/TemplatorTest.java
View file

@ -151,6 +151,26 @@ public class TemplatorTest {
assertEquals(
"<HTML>123456789</HTML>", tmpl.compile());
}
@Test
public void conditionArrayTest(){
Templator tmpl = new Templator("<HTML>{{#list}}{{.}}{{/list}}</HTML>");
tmpl.set("list", new int[]{1,2,3,4,5,6,7,8,9});
assertEquals(
"<HTML>123456789</HTML>", tmpl.compile());
}
@Test
public void conditionArrayLength(){
Templator tmpl = new Templator("<HTML>{{#list.length}}run once{{/list.length}}</HTML>");
tmpl.set("list", new int[]{});
assertEquals(
"<HTML></HTML>", tmpl.compile());
tmpl.set("list", new int[]{1});
assertEquals(
"<HTML>run once</HTML>", tmpl.compile());
tmpl.set("list", new int[]{1,2,3,4,5,6,7,8,9});
assertEquals(
"<HTML>run once</HTML>", tmpl.compile());
}
@Test