[WebUI] Improve the minify script

minify_web_js.py

@@ -9,7 +9,7 @@
 # See LICENSE for more details.
 #
 
-"""Minifies the Webui JS files.
+"""Minifies the WebUI JS files.
 
 Usage: python minify_web_js.py deluge/ui/web/js/deluge-all
 
@@ -20,55 +20,90 @@ import fnmatch
 import os
 import sys
 
-from slimit import minify
 
-if len(sys.argv) != 2:
-    print 'Specify a source js directory, e.g. deluge/ui/web/js/deluge-all'
-    sys.exit(1)
-
-SOURCE_DIR = os.path.abspath(sys.argv[1])
-BUILD_NAME = os.path.basename(SOURCE_DIR)
-BUILD_DIR = os.path.dirname(SOURCE_DIR)
-SRC_FILE_LIST = []
-
-for root, dirnames, filenames in os.walk(SOURCE_DIR):
-    dirnames.sort(reverse=True)
-    filenames_js = fnmatch.filter(filenames, '*.js')
-    filenames_js.sort()
-
-    order_file = os.path.join(root, '.order')
-    if os.path.isfile(order_file):
-        with open(order_file, 'r') as _file:
-            for line in _file:
-                line = line.strip()
-                if not line or line[0] == '#':
-                    continue
-                order_pos, order_filename = line.split()
-                filenames_js.pop(filenames_js.index(order_filename))
-                if order_pos == '+':
-                    filenames_js.insert(0, order_filename)
-
-    # Ensure root directory files are bottom of list.
-    if dirnames:
-        for filename in filenames_js:
-            SRC_FILE_LIST.append(os.path.join(root, filename))
+def module_exists(module_name):
+    try:
+        __import__(module_name)
+    except ImportError:
+        return False
     else:
-        for filename in reversed(filenames_js):
-            SRC_FILE_LIST.insert(0, os.path.join(root, filename))
+        return True
 
-if not SRC_FILE_LIST:
-    print 'No js files found'
-    sys.exit(1)
+# slimit creates smallest file size
+if module_exists('slimit'):
+    from slimit import minify
+elif module_exists('jsmin'):
+    from jsmin import jsmin as minify
+elif module_exists('rjsmin'):
+    from rjsmin import jsmin as minify
+else:
+    raise ImportError('Minifying WebUI JS requires slimit, jsmin or rjsmin')
 
-print 'Minifying %s ...' % BUILD_NAME
 
-# Create the unminified debug file.
-file_debug_js = os.path.join(BUILD_DIR, BUILD_NAME + '-debug.js')
-with open(file_debug_js, 'w') as _file:
-    input_lines = fileinput.input(SRC_FILE_LIST)
-    _file.writelines(input_lines)
+def source_files_list(source_dir):
 
-file_minified_js = os.path.join(BUILD_DIR, BUILD_NAME + '.js')
-with open(file_minified_js, 'w') as file_out:
-    with open(file_debug_js, 'r') as file_in:
-        file_out.write(minify(file_in.read()))
+    src_file_list = []
+
+    for root, dirnames, filenames in os.walk(source_dir):
+        dirnames.sort(reverse=True)
+        filenames_js = fnmatch.filter(filenames, '*.js')
+        filenames_js.sort()
+
+        order_file = os.path.join(root, '.order')
+        if os.path.isfile(order_file):
+            with open(order_file, 'r') as _file:
+                for line in _file:
+                    line = line.strip()
+                    if not line or line[0] == '#':
+                        continue
+                    order_pos, order_filename = line.split()
+                    filenames_js.pop(filenames_js.index(order_filename))
+                    if order_pos == '+':
+                        filenames_js.insert(0, order_filename)
+
+        # Ensure root directory files are bottom of list.
+        if dirnames:
+            for filename in filenames_js:
+                src_file_list.append(os.path.join(root, filename))
+        else:
+            for filename in reversed(filenames_js):
+                src_file_list.insert(0, os.path.join(root, filename))
+
+    return src_file_list
+
+
+def concat_src_files(file_list, fileout_path):
+    with open(fileout_path, 'w') as file_out:
+        file_in = fileinput.input(file_list)
+        file_out.writelines(file_in)
+
+
+def minify_file(file_debug, file_minified):
+    with open(file_minified, 'w') as file_out:
+        with open(file_debug, 'r') as file_in:
+            file_out.write(minify(file_in.read()))
+
+
+def minify_js_dir(source_dir):
+    build_name = os.path.basename(source_dir)
+    build_dir = os.path.dirname(source_dir)
+    file_debug_js = os.path.join(build_dir, build_name + '-debug.js')
+    file_minified_js = os.path.join(build_dir, build_name + '.js')
+    source_files = source_files_list(source_dir)
+
+    if not source_files:
+        print 'No js files found, skipping %s' % source_dir
+        return
+
+    concat_src_files(source_files, file_debug_js)
+    minify_file(file_debug_js, file_minified_js)
+    print 'Minified %s' % source_dir
+
+if __name__ == '__main__':
+    if len(sys.argv) != 2:
+        JS_SOURCE_DIRS = ['deluge/ui/web/js/deluge-all', 'deluge/ui/web/js/extjs/ext-extensions']
+    else:
+        JS_SOURCE_DIRS = [os.path.abspath(sys.argv[1])]
+
+    for source_dir in JS_SOURCE_DIRS:
+        minify_js_dir(source_dir)