// Static data/methods ///////////////////////////////////////////////////////////////////
+ /** maximum length of a line */
+ private static final int MAX_COLUMN = 150;
+
/** a template cache so that only one Template object is created for each xwt */
private static Hashtable cache = new Hashtable(1000);
}
public static Template buildTemplate(InputStream is, String nodeName) {
+ return buildTemplate(is, nodeName, new TemplateHelper());
+ }
+
+ public static Template buildTemplate(InputStream is, String nodeName, TemplateHelper t) {
try {
- return new Template(is, nodeName);
- } catch (XML.SAXParseException e) {
- if (Log.on) Log.log(Template.class, "error parsing template at " + nodeName + ":" + e.getLineNumber() + "," + e.getColumnNumber());
- if (Log.on) Log.log(Template.class, e);
- return null;
- } catch (XML.SAXException e) {
+ return new Template(is, nodeName, t);
+ } catch (XML.SchemaException e) {
if (Log.on) Log.log(Template.class, "error parsing template " + nodeName);
- if (Log.on) Log.log(Template.class, e);
+ if (Log.on) Log.log(Template.class, e.getMessage());
return null;
- } catch (TemplateException te) {
- if (Log.on) Log.log(Template.class, "error parsing template " + nodeName);
- if (Log.on) Log.log(Template.class, te);
+ } catch (XML.XMLException e) {
+ if (Log.on) Log.log(Template.class, "error parsing template at " + nodeName + ":" + e.getLine() + "," + e.getCol());
+ if (Log.on) Log.log(Template.class, e.getMessage());
return null;
} catch (IOException e) {
if (Log.on) Log.log(Template.class, "IOException while parsing template " + nodeName + " -- this should never happen");
this.nodeName = nodeName;
cache.put(nodeName, this);
}
- private Template(InputStream is, String nodeName) throws XML.SAXException, IOException {
+ private Template(InputStream is, String nodeName, TemplateHelper th) throws XML.XMLException, IOException {
this(nodeName);
- new TemplateHelper().parseit(is, this);
+ th.parseit(is, this);
}
/** calculates, caches, and returns an integer approximation of how long it will take to apply this template, including pre/post and children */
// XML Parsing /////////////////////////////////////////////////////////////////
/** handles XML parsing; builds a Template tree as it goes */
- private static class TemplateHelper extends XML {
+ static final class TemplateHelper extends XML {
- TemplateHelper() {
- for(int i=0; i<defaultImportList.length; i++) importlist.addElement(defaultImportList[i]);
- }
+ TemplateHelper() { }
/** parse an XML input stream, building a Template tree off of <tt>root</tt> */
- void parseit(InputStream is, Template root) throws XML.SAXException, IOException {
+ void parseit(InputStream is, Template root) throws XML.XMLException, IOException {
+ rootNodeHasBeenEncountered = false;
+ templateNodeHasBeenEncountered = false;
+ staticNodeHasBeenEncountered = false;
+ templateNodeHasBeenFinished = false;
+ nameOfHeaderNodeBeingProcessed = null;
+
+ nodeStack.setSize(0);
+ importlist.setSize(0);
+ preapply.setSize(0);
+ postapply.setSize(0);
+
+ importlist.fromArray(defaultImportList);
+
t = root;
- parse(new TabAndMaxColumnEnforcingReader(new InputStreamReader(is), root.nodeName));
+ parse(new InputStreamReader(is));
}
/** parsing state: true iff we have already encountered the <xwt> open-tag */
/** the template we're currently working on */
Template t = null;
- public void startElement(String name, String[] keys, Object[] vals, int line, int col) throws XML.SAXException {
-
+ public void startElement(XML.Element c) throws XML.SchemaException {
if (templateNodeHasBeenFinished) {
- throw new XML.SAXException("no elements may appear after the <template> node");
+ throw new XML.SchemaException("no elements may appear after the <template> node");
} else if (!rootNodeHasBeenEncountered) {
- if (!"xwt".equals(name)) throw new XML.SAXException("root element was not <xwt>");
- if (keys.length != 0) throw new XML.SAXException("root element must not have attributes");
+ if (!"xwt".equals(c.localName)) throw new XML.SchemaException("root element was not <xwt>");
+ if (c.len != 0) throw new XML.SchemaException("root element must not have attributes");
rootNodeHasBeenEncountered = true;
return;
} else if (!templateNodeHasBeenEncountered) {
- if (nameOfHeaderNodeBeingProcessed != null) throw new XML.SAXException("can't nest header nodes");
- nameOfHeaderNodeBeingProcessed = name;
+ if (nameOfHeaderNodeBeingProcessed != null) throw new XML.SchemaException("can't nest header nodes");
+ nameOfHeaderNodeBeingProcessed = c.localName;
- if (name.equals("import")) {
- if (keys.length != 1 || !keys[0].equals("name"))
- throw new XML.SAXException("<import> node must have exactly one attribute, which must be called 'name'");
- String importpackage = vals[0].toString();
+ if (c.localName.equals("import")) {
+ if (c.len != 1 || !c.keys[0].equals("name"))
+ throw new XML.SchemaException("<import> node must have exactly one attribute, which must be called 'name'");
+ String importpackage = c.vals[0].toString();
if (importpackage.endsWith(".*")) importpackage = importpackage.substring(0, importpackage.length() - 2);
importlist.addElement(importpackage);
return;
- } else if (name.equals("redirect")) {
- if (keys.length != 1 || !keys[0].equals("target"))
- throw new XML.SAXException("<redirect> node must have exactly one attribute, which must be called 'target'");
+ } else if (c.localName.equals("redirect")) {
+ if (c.len != 1 || !c.keys[0].equals("target"))
+ throw new XML.SchemaException("<redirect> node must have exactly one attribute, which must be called 'target'");
if (t.redirect != null)
- throw new XML.SAXException("the <redirect> header element may not appear more than once");
- t.redirect = vals[0].toString();
+ throw new XML.SchemaException("the <redirect> header element may not appear more than once");
+ t.redirect = c.vals[0].toString();
return;
- } else if (name.equals("preapply")) {
- if (keys.length != 1 || !keys[0].equals("name"))
- throw new XML.SAXException("<preapply> node must have exactly one attribute, which must be called 'name'");
- preapply.addElement(vals[0]);
+ } else if (c.localName.equals("preapply")) {
+ if (c.len != 1 || !c.keys[0].equals("name"))
+ throw new XML.SchemaException("<preapply> node must have exactly one attribute, which must be called 'name'");
+ preapply.addElement(c.vals[0]);
return;
- } else if (name.equals("postapply")) {
- if (keys.length != 1 || !keys[0].equals("name"))
- throw new XML.SAXException("<postapply> node must have exactly one attribute, which must be called 'name'");
- postapply.addElement(vals[0]);
+ } else if (c.localName.equals("postapply")) {
+ if (c.len != 1 || !c.keys[0].equals("name"))
+ throw new XML.SchemaException("<postapply> node must have exactly one attribute, which must be called 'name'");
+ postapply.addElement(c.vals[0]);
return;
- } else if (name.equals("static")) {
+ } else if (c.localName.equals("static")) {
if (staticNodeHasBeenEncountered)
- throw new XML.SAXException("the <static> header node may not appear more than once");
- if (keys.length > 0)
- throw new XML.SAXException("the <static> node may not have attributes");
+ throw new XML.SchemaException("the <static> header node may not appear more than once");
+ if (c.len > 0)
+ throw new XML.SchemaException("the <static> node may not have attributes");
staticNodeHasBeenEncountered = true;
return;
- } else if (name.equals("preserve")) {
- if (keys.length != 1 || !keys[0].equals("attributes"))
- throw new XML.SAXException("<preserve> node must have exactly one attribute, which must be called 'attributes'");
+ } else if (c.localName.equals("preserve")) {
+ if (c.len != 1 || !c.keys[0].equals("attributes"))
+ throw new XML.SchemaException("<preserve> node must have exactly one attribute, which must be called 'attributes'");
if (t.preserve != null)
- throw new XML.SAXException("<preserve> header element may not appear more than once");
+ throw new XML.SchemaException("<preserve> header element may not appear more than once");
- StringTokenizer tok = new StringTokenizer(vals[0].toString(), ",", false);
+ StringTokenizer tok = new StringTokenizer(c.vals[0].toString(), ",", false);
t.preserve = new String[tok.countTokens()];
for(int i=0; i<t.preserve.length; i++) t.preserve[i] = tok.nextToken();
return;
- } else if (name.equals("template")) {
+ } else if (c.localName.equals("template")) {
// finalize importlist/preapply/postapply, since they can't change from here on
- t.startLine = line;
+ t.startLine = getLine();
importlist.toArray(t.importlist = new String[importlist.size()]);
if (preapply.size() > 0) preapply.copyInto(t.preapply = new String[preapply.size()]);
if (postapply.size() > 0) postapply.copyInto(t.postapply = new String[postapply.size()]);
- importlist = preapply = postapply = null;
+ importlist.setSize(0); preapply.setSize(0); postapply.setSize(0);
templateNodeHasBeenEncountered = true;
} else {
- throw new XML.SAXException("unrecognized header node \"" + name + "\"");
+ throw new XML.SchemaException("unrecognized header node \"" + c.localName + "\"");
}
// instantiate a new node, and set its nodeName/importlist/preapply
Template t2 = new Template(t.nodeName + "." + t.childvect.size());
t2.importlist = t.importlist;
- t2.startLine = line;
- if (!name.equals("box")) t2.preapply = new String[] { name };
+ t2.startLine = getLine();
+ if (!c.localName.equals("box")) t2.preapply = new String[] { c.localName };
// make the new node the current node
t = t2;
}
- t.keys = keys;
- t.vals = vals;
-
+ // TODO: Sort contents straight from one array to another
+ t.keys = new String[c.len];
+ t.vals = new Object[c.len];
+ System.arraycopy(c.keys, 0, t.keys, 0, c.len);
+ System.arraycopy(c.vals, 0, t.vals, 0, c.len);
quickSortAttributes(0, t.keys.length - 1);
for(int i=0; i<t.keys.length; i++) {
if (t.keys[i].equals("id")) {
- t.id = vals[i].toString().intern();
+ t.id = t.vals[i].toString().intern();
t.keys[i] = null;
continue;
}
t.keys[i] = t.keys[i].intern();
- String valString = vals[i].toString();
+ String valString = t.vals[i].toString();
if (valString.equals("true")) t.vals[i] = Boolean.TRUE;
else if (valString.equals("false")) t.vals[i] = Boolean.FALSE;
hasNonNumeral = true;
break;
}
- if (valString.length() > 0 && !hasNonNumeral) vals[i] = new Double(valString);
- else vals[i] = valString.intern();
+ if (valString.length() > 0 && !hasNonNumeral) t.vals[i] = new Double(valString);
+ else t.vals[i] = valString.intern();
}
// bump thisbox to the front of the pack
o = t.vals[right]; t.vals[right] = t.vals[i]; t.vals[i] = o;
return i;
}
-
+
/** simple quicksort, from http://sourceforge.net/snippet/detail.php?type=snippet&id=100240 */
private void quickSortAttributes(int left, int right) {
if (left >= right) return;
quickSortAttributes(left, p - 1);
quickSortAttributes(p + 1, right);
}
-
- public void endElement(String name, int line, int col) throws XML.SAXException {
-
- boolean hasNonWhitespace = false;
-
- int len = t == null || t.content == null ? 0 : t.content.length();
- for(int i=0; t.content != null && i<len; i++)
-
- // ignore double-slash comment blocks
- if (t.content.charAt(i) == '/' && t.content.charAt(i + 1) == '/') {
- while(t.content.charAt(i) != '\n' && i<len) i++;
- i--;
-
- // ignore /* .. */ comment blocks
- } else if (i<len - 1 && t.content.charAt(i) == '/' && t.content.charAt(i + 1) == '*') {
- i += 2;
- while(i<len - 1 && !(t.content.charAt(i) == '*' && t.content.charAt(i + 1) == '/')) i++;
- if (i<len - 1 && t.content.charAt(i) == '*' && t.content.charAt(i + 1) == '/') i += 2;
- i--;
-
- // check for named functions
- } else if (i + 8 <= len && t.content.charAt(i) == 'f' && t.content.charAt(i+1) == 'u' &&
- t.content.charAt(i+2) == 'n' && t.content.charAt(i+3) == 'c' && t.content.charAt(i+4) == 't' &&
- t.content.charAt(i+5) == 'i' && t.content.charAt(i+6) == 'o' && t.content.charAt(i+7) == 'n') {
- int j = i + 8;
- while(j<len && Character.isWhitespace(t.content.charAt(j))) j++;
- if (j<len && t.content.charAt(j) != '(')
- throw new XML.SAXException("named functions are not permitted in XWT -- instead of \"function foo() { ... }\"," +
- " use \"foo = function() { ... }\"");
-
- // replace " and " with " && "
- } else if (i + 5 < len && Character.isWhitespace(t.content.charAt(i)) &&
- t.content.charAt(i+1) == 'a' && t.content.charAt(i+2) == 'n' && t.content.charAt(i+3) == 'd' &&
- Character.isWhitespace(t.content.charAt(i + 4))) {
- t.content.setCharAt(i+1, '&');
- t.content.setCharAt(i+2, '&');
- t.content.setCharAt(i+3, ' ');
- hasNonWhitespace = true;
-
- // generic check for nonwhitespace
- } else if (!Character.isWhitespace(t.content.charAt(i))) {
- hasNonWhitespace = true;
- }
-
+ public void endElement(XML.Element c) throws XML.SchemaException {
if (rootNodeHasBeenEncountered && !templateNodeHasBeenEncountered) {
- if ("static".equals(nameOfHeaderNodeBeingProcessed) && hasNonWhitespace) t.staticscript = genscript(true);
+ if ("static".equals(nameOfHeaderNodeBeingProcessed) && t.content != null) t.staticscript = genscript(true);
nameOfHeaderNodeBeingProcessed = null;
} else if (templateNodeHasBeenEncountered && !templateNodeHasBeenFinished) {
-
// turn our childvect into a Template[]
t.childvect.copyInto(t.children = new Template[t.childvect.size()]);
t.childvect = null;
- if (hasNonWhitespace) t.script = genscript(false);
+ if (t.content != null) t.script = genscript(false);
if (nodeStack.size() == 0) {
// </template>
if (Log.on) Log.log(this, " ERROR: " + ee.getMessage());
thisscript = null;
} catch (IOException ioe) {
- if (Log.on) Log.log(this, "IOException while compiling script; this should never happen");
- if (Log.on) Log.log(this, ioe);
+ if (Log.on) Log.log(this, " ERROR: " + ioe.getMessage());
thisscript = null;
}
return thisscript;
}
- public void content(char[] ch, int start, int length, int line, int col) throws XML.SAXException {
- if ("static".equals(nameOfHeaderNodeBeingProcessed) || templateNodeHasBeenEncountered) {
- int contentlines = 0;
- for(int i=start; i<start + length; i++) if (ch[i] == '\n') contentlines++;
- line -= contentlines;
+ public void characters(char[] ch, int start, int length) throws XML.SchemaException {
+ // invoke the max-column-length and no-tab crusade
+ if (getCol() + length > MAX_COLUMN) throw new XML.SchemaException(
+ t.nodeName+ ":" + getLine() + ": lines longer than " + MAX_COLUMN + " characters not allowed");
+
+ for (int i=0; length >i; i++) if (ch[start+i] == '\t') throw new XML.SchemaException(
+ t.nodeName+ ":" + getLine() + "," + getCol() + ": tabs are not allowed in XWT files");
+ if ("static".equals(nameOfHeaderNodeBeingProcessed) || templateNodeHasBeenEncountered) {
if (t.content == null) {
- t.content_start = line;
+ t.content_start = getLine();
t.content_lines = 0;
t.content = new StringBuffer();
}
- for(int i=t.content_start + t.content_lines; i<line; i++) {
- t.content.append('\n');
- t.content_lines++;
- }
-
t.content.append(ch, start, length);
- t.content_lines += contentlines;
+ t.content_lines++;
} else if (nameOfHeaderNodeBeingProcessed != null) {
- throw new XML.SAXException("header node <" + nameOfHeaderNodeBeingProcessed + "> cannot have text content");
-
+ throw new XML.SchemaException("header node <" + nameOfHeaderNodeBeingProcessed + "> cannot have text content");
}
-
}
- }
-
- /** a filtering reader that watches for tabs and long lines */
- private static class TabAndMaxColumnEnforcingReader extends FilterReader {
- private int MAX_COLUMN = 150;
- private int column = 0;
- private int line = 1;
- private boolean lastCharWasCR = false;
- private String filename;
- public TabAndMaxColumnEnforcingReader(Reader r, String filename) { super(r); this.filename = filename; }
- public int read() {
- if (Log.on) Log.log(this, this.getClass().getName() + ".read() not supported, this should never happen");
- return -1;
+ public void whitespace(char[] ch, int start, int length) throws XML.SchemaException {
}
- public long skip(long numskip) {
- if (Log.on) Log.log(this, this.getClass().getName() + ".skip() not supported; this should never happen");
- return numskip;
- }
- public int read(char[] buf, int off, int len) throws IOException {
- int ret = super.read(buf, off, len);
- for(int i=off; i<off + ret; i++)
- if (buf[i] == '\t') {
- throw new TemplateException(filename + ":" + line + "," + column + ": tabs are not allowed in XWT files");
- } else if (buf[i] == '\r') {
- column = 0;
- line++;
- lastCharWasCR = true;
- } else if (buf[i] == '\n') {
- column = 0;
- if (!lastCharWasCR) line++;
- } else if (++column > MAX_COLUMN) {
- throw new TemplateException(filename + ":" + line + ": lines longer than " + MAX_COLUMN + " characters not allowed");
- } else {
- lastCharWasCR = false;
- }
- return ret;
- }
- }
-
- private static class TemplateException extends IOException {
- TemplateException(String s) { super(s); }
}
}
projects / org.ibex.core.git / blobdiff