1 files changed, 212 insertions, 0 deletions
diff --git a/trunk/infrastructure/rhino1_7R1/toolsrc/org/mozilla/javascript/tools/idswitch/CodePrinter.java b/trunk/infrastructure/rhino1_7R1/toolsrc/org/mozilla/javascript/tools/idswitch/CodePrinter.java
new file mode 100644
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--- /dev/null
+++ b/trunk/infrastructure/rhino1_7R1/toolsrc/org/mozilla/javascript/tools/idswitch/CodePrinter.java
@@ -0,0 +1,212 @@
+/* -*- Mode: java; tab-width: 4; indent-tabs-mode: 1; c-basic-offset: 4 -*-
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Rhino code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Igor Bukanov
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License Version 2 or later (the "GPL"), in which
+ * case the provisions of the GPL are applicable instead of those above. If
+ * you wish to allow use of your version of this file only under the terms of
+ * the GPL and not to allow others to use your version of this file under the
+ * MPL, indicate your decision by deleting the provisions above and replacing
+ * them with the notice and other provisions required by the GPL. If you do
+ * not delete the provisions above, a recipient may use your version of this
+ * file under either the MPL or the GPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+package org.mozilla.javascript.tools.idswitch;
+
+class CodePrinter {
+
+// length of u-type escape like \u12AB
+    private static final int LITERAL_CHAR_MAX_SIZE = 6;
+
+    private String lineTerminator = "\n";
+
+    private int indentStep = 4;
+    private int indentTabSize = 8;
+
+    private char[] buffer = new char[1 << 12]; // 4K
+    private int offset;
+
+    public String getLineTerminator() { return lineTerminator; }
+    public void setLineTerminator(String value) { lineTerminator = value; }
+
+    public int getIndentStep() { return indentStep; }
+    public void setIndentStep(int char_count) { indentStep = char_count; }
+
+    public int getIndentTabSize() {    return indentTabSize; }
+    public void setIndentTabSize(int tab_size) { indentTabSize = tab_size; }
+
+    public void clear() {
+        offset = 0;
+    }
+
+    private int ensure_area(int area_size) {
+        int begin = offset;
+        int end = begin + area_size;
+        if (end > buffer.length) {
+            int new_capacity = buffer.length * 2;
+            if (end > new_capacity) { new_capacity = end; }
+            char[] tmp = new char[new_capacity];
+            System.arraycopy(buffer, 0, tmp, 0, begin);
+            buffer = tmp;
+        }
+        return begin;
+    }
+
+    private int add_area(int area_size) {
+        int pos = ensure_area(area_size);
+        offset = pos + area_size;
+        return pos;
+    }
+
+    public int getOffset() {
+        return offset;
+    }
+
+    public int getLastChar() {
+        return offset == 0 ? -1 : buffer[offset - 1];
+    }
+
+    public void p(char c) {
+        int pos = add_area(1);
+        buffer[pos] = c;
+    }
+
+    public void p(String s) {
+        int l = s.length();
+        int pos = add_area(l);
+        s.getChars(0, l, buffer, pos);
+    }
+
+    public final void p(char[] array) {
+        p(array, 0, array.length);
+    }
+
+    public void p(char[] array, int begin, int end) {
+        int l = end - begin;
+        int pos = add_area(l);
+        System.arraycopy(array, begin, buffer, pos, l);
+    }
+
+    public void p(int i) {
+        p(Integer.toString(i));
+    }
+
+    public void qchar(int c) {
+        int pos = ensure_area(2 + LITERAL_CHAR_MAX_SIZE);
+        buffer[pos] = '\'';
+        pos = put_string_literal_char(pos + 1, c, false);
+        buffer[pos] = '\'';
+        offset = pos + 1;
+    }
+
+    public void qstring(String s) {
+        int l = s.length();
+        int pos = ensure_area(2 + LITERAL_CHAR_MAX_SIZE * l);
+        buffer[pos] = '"';
+        ++pos;
+        for (int i = 0; i != l; ++i) {
+            pos = put_string_literal_char(pos, s.charAt(i), true);
+        }
+        buffer[pos] = '"';
+        offset = pos + 1;
+    }
+
+    private int put_string_literal_char(int pos, int c, boolean in_string) {
+        boolean backslash_symbol = true;
+        switch (c) {
+            case '\b': c = 'b'; break;
+            case '\t': c = 't'; break;
+            case '\n': c = 'n'; break;
+            case '\f': c = 'f'; break;
+            case '\r': c = 'r'; break;
+            case '\'': backslash_symbol = !in_string; break;
+            case '"': backslash_symbol = in_string; break;
+            default: backslash_symbol = false;
+        }
+
+        if (backslash_symbol) {
+            buffer[pos] = '\\';
+            buffer[pos + 1] = (char)c;
+            pos += 2;
+        }
+        else if (' ' <= c && c <= 126) {
+            buffer[pos] = (char)c;
+            ++pos;
+        }
+        else {
+            buffer[pos] = '\\';
+            buffer[pos + 1] = 'u';
+            buffer[pos + 2] = digit_to_hex_letter(0xF & (c >> 12));
+            buffer[pos + 3] = digit_to_hex_letter(0xF & (c >> 8));
+            buffer[pos + 4] = digit_to_hex_letter(0xF & (c >> 4));
+            buffer[pos + 5] = digit_to_hex_letter(0xF & c);
+            pos += 6;
+        }
+        return pos;
+    }
+
+    private static char digit_to_hex_letter(int d) {
+        return (char)((d < 10) ? '0' + d : 'A' - 10 + d);
+    }
+
+    public void indent(int level) {
+        int visible_size = indentStep * level;
+        int indent_size, tab_count;
+        if (indentTabSize <= 0) {
+            tab_count = 0; indent_size = visible_size;
+        }
+        else {
+            tab_count = visible_size / indentTabSize;
+            indent_size = tab_count + visible_size % indentTabSize;
+        }
+        int pos = add_area(indent_size);
+        int tab_end = pos + tab_count;
+        int indent_end = pos + indent_size;
+        for (; pos != tab_end; ++pos) {    buffer[pos] = '\t'; }
+        for (; pos != indent_end; ++pos) {    buffer[pos] = ' '; }
+    }
+
+    public void nl() {
+        p('\n');
+    }
+
+    public void line(int indent_level, String s) {
+        indent(indent_level); p(s); nl();
+    }
+
+    public void erase(int begin, int end) {
+        System.arraycopy(buffer, end, buffer, begin, offset - end);
+        offset -= end - begin;
+    }
+
+    public String toString() {
+        return new String(buffer, 0, offset);
+    }
+
+
+
+}