+++ /dev/null
-/* jsmin.c
- 2011-09-30
-
-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.
-*/
-
-#include <stdlib.h>
-#include <stdio.h>
-
-static int theA;
-static int theB;
-static int theLookahead = EOF;
-
-
-/* isAlphanum -- return true if the character is a letter, digit, underscore,
- dollar sign, or non-ASCII character.
-*/
-
-static int
-isAlphanum(int c)
-{
- return ((c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') ||
- (c >= 'A' && c <= 'Z') || c == '_' || c == '$' || c == '\\' ||
- c > 126);
-}
-
-
-/* get -- return the next character from stdin. Watch out for lookahead. If
- the character is a control character, translate it to a space or
- linefeed.
-*/
-
-static int
-get()
-{
- int c = theLookahead;
- theLookahead = EOF;
- if (c == EOF) {
- c = getc(stdin);
- }
- if (c >= ' ' || c == '\n' || c == EOF) {
- return c;
- }
- if (c == '\r') {
- return '\n';
- }
- return ' ';
-}
-
-
-/* peek -- get the next character without getting it.
-*/
-
-static int
-peek()
-{
- theLookahead = get();
- return theLookahead;
-}
-
-
-/* next -- get the next character, excluding comments. peek() is used to see
- if a '/' is followed by a '/' or '*'.
-*/
-
-static int
-next()
-{
- int c = get();
- if (c == '/') {
- switch (peek()) {
- case '/':
- for (;;) {
- c = get();
- if (c <= '\n') {
- return c;
- }
- }
- case '*':
- get();
- for (;;) {
- switch (get()) {
- case '*':
- if (peek() == '/') {
- get();
- return ' ';
- }
- break;
- case EOF:
- fprintf(stderr, "Error: JSMIN Unterminated comment.\n");
- exit(1);
- }
- }
- 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 =.
-*/
-
-static void
-action(int d)
-{
- switch (d) {
- case 1:
- putc(theA, stdout);
- case 2:
- theA = theB;
- if (theA == '\'' || theA == '"' || theA == '`') {
- for (;;) {
- putc(theA, stdout);
- theA = get();
- if (theA == theB) {
- break;
- }
- if (theA == '\\') {
- putc(theA, stdout);
- theA = get();
- }
- if (theA == EOF) {
- fprintf(stderr, "Error: JSMIN unterminated string literal.");
- exit(1);
- }
- }
- }
- case 3:
- theB = next();
- if (theB == '/' && (theA == '(' || theA == ',' || theA == '=' ||
- theA == ':' || theA == '[' || theA == '!' ||
- theA == '&' || theA == '|' || theA == '?' ||
- theA == '{' || theA == '}' || theA == ';' ||
- theA == '\n')) {
- putc(theA, stdout);
- putc(theB, stdout);
- for (;;) {
- theA = get();
- if (theA == '[') {
- for (;;) {
- putc(theA, stdout);
- theA = get();
- if (theA == ']') {
- break;
- }
- if (theA == '\\') {
- putc(theA, stdout);
- theA = get();
- }
- if (theA == EOF) {
- fprintf(stderr,
- "Error: JSMIN unterminated set in Regular Expression literal.\n");
- exit(1);
- }
- }
- } else if (theA == '/') {
- break;
- } else if (theA =='\\') {
- putc(theA, stdout);
- theA = get();
- }
- if (theA == EOF) {
- fprintf(stderr,
- "Error: JSMIN unterminated Regular Expression literal.\n");
- exit(1);
- }
- putc(theA, stdout);
- }
- theB = next();
- }
- }
-}
-
-
-/* jsmin -- 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.
-*/
-
-static void
-jsmin()
-{
- theA = '\n';
- action(3);
- while (theA != EOF) {
- switch (theA) {
- case ' ':
- if (isAlphanum(theB)) {
- action(1);
- } else {
- action(2);
- }
- break;
- case '\n':
- switch (theB) {
- case '{':
- case '[':
- case '(':
- case '+':
- case '-':
- action(1);
- break;
- case ' ':
- action(3);
- break;
- default:
- if (isAlphanum(theB)) {
- action(1);
- } else {
- action(2);
- }
- }
- break;
- default:
- switch (theB) {
- case ' ':
- if (isAlphanum(theA)) {
- action(1);
- break;
- }
- action(3);
- break;
- case '\n':
- switch (theA) {
- case '}':
- case ']':
- case ')':
- case '+':
- case '-':
- case '"':
- case '\'':
- case '`':
- action(1);
- break;
- default:
- if (isAlphanum(theA)) {
- action(1);
- } else {
- action(3);
- }
- }
- break;
- default:
- action(1);
- break;
- }
- }
- }
-}
-
-
-/* main -- Output any command line arguments as comments
- and then minify the input.
-*/
-extern int
-main(int argc, char* argv[])
-{
- int i;
- for (i = 1; i < argc; i += 1) {
- fprintf(stdout, "// %s\n", argv[i]);
- }
- jsmin();
- return 0;
-}
projects / librecmc / librecmc.git / commitdiff