+++ /dev/null
-/* jsmin.js - 2006-08-31
-Author: Franck Marcia
-This work is an adaptation of jsminc.c published by Douglas Crockford.
-Permission is hereby granted to use the Javascript version under the same
-conditions as the jsmin.c on which it is based.
-
-jsmin.c
-2006-05-04
-
-Copyright (c) 2002 Douglas Crockford (www.crockford.com)
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
-of the Software, and to permit persons to whom the Software is furnished to do
-so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-The Software shall be used for Good, not Evil.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-
-Update:
- add level:
- 1: minimal, keep linefeeds if single
- 2: normal, the standard algorithm
- 3: agressive, remove any linefeed and doesn't take care of potential
- missing semicolons (can be regressive)
- store stats
- jsmin.oldSize
- jsmin.newSize
-*/
-
-String.prototype.has = function(c) {
- return this.indexOf(c) > -1;
-};
-
-function jsmin(comment, input, level) {
-
- if (input === undefined) {
- input = comment;
- comment = '';
- level = 2;
- } else if (level === undefined || level < 1 || level > 3) {
- level = 2;
- }
-
- if (comment.length > 0) {
- comment += '\n';
- }
-
- var a = '',
- b = '',
- EOF = -1,
- LETTERS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz',
- DIGITS = '0123456789',
- ALNUM = LETTERS + DIGITS + '_$\\',
- theLookahead = EOF;
-
-
- /* isAlphanum -- return true if the character is a letter, digit, underscore,
- dollar sign, or non-ASCII character.
- */
-
- function isAlphanum(c) {
- return c != EOF && (ALNUM.has(c) || c.charCodeAt(0) > 126);
- }
-
-
- /* get -- return the next character. Watch out for lookahead. If the
- character is a control character, translate it to a space or
- linefeed.
- */
-
- function get() {
-
- var c = theLookahead;
- if (get.i == get.l) {
- return EOF;
- }
- theLookahead = EOF;
- if (c == EOF) {
- c = input.charAt(get.i);
- ++get.i;
- }
- if (c >= ' ' || c == '\n') {
- return c;
- }
- if (c == '\r') {
- return '\n';
- }
- return ' ';
- }
-
- get.i = 0;
- get.l = input.length;
-
-
- /* peek -- get the next character without getting it.
- */
-
- function peek() {
- theLookahead = get();
- return theLookahead;
- }
-
-
- /* next -- get the next character, excluding comments. peek() is used to see
- if a '/' is followed by a '/' or '*'.
- */
-
- function next() {
-
- var c = get();
- if (c == '/') {
- switch (peek()) {
- case '/':
- for (;;) {
- c = get();
- if (c <= '\n') {
- return c;
- }
- }
- break;
- case '*':
- get();
- for (;;) {
- switch (get()) {
- case '*':
- if (peek() == '/') {
- get();
- return ' ';
- }
- break;
- case EOF:
- throw 'Error: Unterminated comment.';
- }
- }
- break;
- default:
- return c;
- }
- }
- return c;
- }
-
-
- /* action -- do something! What you do is determined by the argument:
- 1 Output A. Copy B to A. Get the next B.
- 2 Copy B to A. Get the next B. (Delete A).
- 3 Get the next B. (Delete B).
- action treats a string as a single character. Wow!
- action recognizes a regular expression if it is preceded by ( or , or =.
- */
-
- function action(d) {
-
- var r = [];
-
- if (d == 1) {
- r.push(a);
- }
-
- if (d < 3) {
- a = b;
- if (a == '\'' || a == '"') {
- for (;;) {
- r.push(a);
- a = get();
- if (a == b) {
- break;
- }
- if (a <= '\n') {
- throw 'Error: unterminated string literal: ' + a;
- }
- if (a == '\\') {
- r.push(a);
- a = get();
- }
- }
- }
- }
-
- b = next();
-
- if (b == '/' && '(,=:[!&|'.has(a)) {
- r.push(a);
- r.push(b);
- for (;;) {
- a = get();
- if (a == '/') {
- break;
- } else if (a =='\\') {
- r.push(a);
- a = get();
- } else if (a <= '\n') {
- throw 'Error: unterminated Regular Expression literal';
- }
- r.push(a);
- }
- b = next();
- }
-
- return r.join('');
- }
-
-
- /* m -- Copy the input to the output, deleting the characters which are
- insignificant to JavaScript. Comments will be removed. Tabs will be
- replaced with spaces. Carriage returns will be replaced with
- linefeeds.
- Most spaces and linefeeds will be removed.
- */
-
- function m() {
-
- var r = [];
- a = '\n';
-
- r.push(action(3));
-
- while (a != EOF) {
- switch (a) {
- case ' ':
- if (isAlphanum(b)) {
- r.push(action(1));
- } else {
- r.push(action(2));
- }
- break;
- case '\n':
- switch (b) {
- case '{':
- case '[':
- case '(':
- case '+':
- case '-':
- r.push(action(1));
- break;
- case ' ':
- r.push(action(3));
- break;
- default:
- if (isAlphanum(b)) {
- r.push(action(1));
- } else {
- if (level == 1 && b != '\n') {
- r.push(action(1));
- } else {
- r.push(action(2));
- }
- }
- }
- break;
- default:
- switch (b) {
- case ' ':
- if (isAlphanum(a)) {
- r.push(action(1));
- break;
- }
- r.push(action(3));
- break;
- case '\n':
- if (level == 1 && a != '\n') {
- r.push(action(1));
- } else {
- switch (a) {
- case '}':
- case ']':
- case ')':
- case '+':
- case '-':
- case '"':
- case '\'':
- if (level == 3) {
- r.push(action(3));
- } else {
- r.push(action(1));
- }
- break;
- default:
- if (isAlphanum(a)) {
- r.push(action(1));
- } else {
- r.push(action(3));
- }
- }
- }
- break;
- default:
- r.push(action(1));
- break;
- }
- }
- }
-
- return r.join('');
- }
-
- jsmin.oldSize = input.length;
- var r = m(input);
- jsmin.newSize = r.length;
-
- return comment + r;
-
-}
git.asbjorn.biz / jquery.git / blobdiff