| 1 | #!/usr/bin/env python |
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| 2 | # -*- coding: utf-8 -*- |
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| 3 | |
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| 4 | """ |
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| 5 | High-level CSS and JS minification class for web2py. |
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| 6 | Called by response.include_files() |
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| 7 | Created by: Ross Peoples <ross.peoples@gmail.com> |
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| 8 | Modified by: Massimo Di Pierro <massimo.dipierro@gmail.com> |
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| 9 | """ |
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| 10 | |
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| 11 | from . import cssmin |
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| 12 | from . import jsmin |
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| 13 | import os |
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| 14 | import hashlib |
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| 15 | import re |
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| 16 | import sys |
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| 17 | PY2 = sys.version_info[0] == 2 |
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| 18 | |
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| 19 | if PY2: |
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| 20 | hashlib_md5 = hashlib.md5 |
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| 21 | else: |
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| 22 | hashlib_md5 = lambda s: hashlib.md5(bytes(s, 'utf8')) |
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| 23 | |
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| 24 | def open_py23(filename, mode): |
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| 25 | if PY2: |
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| 26 | f = open(filename, mode + 'b') |
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| 27 | else: |
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| 28 | f = open(filename, mode, encoding="utf8") |
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| 29 | return f |
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| 30 | |
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| 31 | def read_binary_file(filename): |
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| 32 | f = open_py23(filename, 'r') |
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| 33 | data = f.read() |
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| 34 | f.close() |
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| 35 | return data |
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| 36 | |
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| 37 | def write_binary_file(filename, data): |
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| 38 | f = open_py23(filename, 'w') |
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| 39 | f.write(data) |
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| 40 | f.close() |
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| 41 | |
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| 42 | def fix_links(css, static_path): |
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| 43 | return re.sub(r'url\((["\'])\.\./', 'url(\\1' + static_path, css) |
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| 44 | |
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| 45 | def minify(files, path_info, folder, optimize_css, optimize_js, |
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| 46 | ignore_concat=[], |
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| 47 | ignore_minify=['/jquery.js', '/anytime.js']): |
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| 48 | |
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| 49 | """ |
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| 50 | Input: |
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| 51 | files: is a list of URLs to JS and CSS files (not repeated) |
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| 52 | path_info: is the URL of a temp static folder |
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| 53 | folder: is the application folder |
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| 54 | optimize_css: is a string of the form 'concat|minify|inline' |
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| 55 | optimize_js: is a string of the form 'concat|minify|inline' |
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| 56 | (minify requires concat, inline requires concat also) |
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| 57 | |
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| 58 | Returns a new list of: |
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| 59 | - filename (absolute or relative, css or js, actual or temporary) or |
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| 60 | - ('css:inline','...css..') |
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| 61 | - ('js:inline','...js..') |
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| 62 | """ |
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| 63 | optimize_css = optimize_css or '' |
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| 64 | optimize_js = optimize_js or '' |
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| 65 | concat_css = 'concat' in optimize_css |
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| 66 | minify_css = 'minify' in optimize_css |
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| 67 | inline_css = 'inline' in optimize_css |
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| 68 | concat_js = 'concat' in optimize_js |
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| 69 | minify_js = 'minify' in optimize_js |
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| 70 | inline_js = 'inline' in optimize_js |
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| 71 | static_path, temp = path_info.rsplit('/', 1) |
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| 72 | new_files = [] |
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| 73 | css = [] |
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| 74 | js = [] |
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| 75 | processed = [] |
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| 76 | for k, filename in enumerate(files): |
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| 77 | if not filename.startswith('/') or \ |
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| 78 | any(filename.endswith(x) |
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| 79 | for x in ignore_concat): |
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| 80 | new_files.append(filename) |
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| 81 | continue |
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| 82 | |
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| 83 | abs_filename = os.path.join( |
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| 84 | folder, 'static', filename[len(static_path) + 1:]) |
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| 85 | |
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| 86 | if filename.lower().endswith('.css'): |
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| 87 | processed.append(filename) |
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| 88 | spath_info, sfilename = \ |
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| 89 | path_info.split('/'), filename.split('/') |
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| 90 | u = 0 |
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| 91 | for i, a in enumerate(sfilename): |
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| 92 | try: |
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| 93 | if a != spath_info[i]: |
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| 94 | u = i |
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| 95 | break |
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| 96 | except: |
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| 97 | pass |
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| 98 | if concat_css: |
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| 99 | contents = read_binary_file(abs_filename) |
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| 100 | replacement = '/'.join(spath_info[:u]) + '/' |
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| 101 | contents = fix_links(contents, replacement) |
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| 102 | if minify_css: |
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| 103 | css.append(cssmin.cssmin(contents)) |
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| 104 | else: |
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| 105 | css.append(contents) |
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| 106 | else: |
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| 107 | css.append(filename) |
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| 108 | elif filename.lower().endswith('.js'): |
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| 109 | processed.append(filename) |
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| 110 | if concat_js: |
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| 111 | contents = read_binary_file(abs_filename) |
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| 112 | |
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| 113 | if minify_js and \ |
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| 114 | not filename.endswith('.min.js') and \ |
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| 115 | not any(filename.endswith(x) |
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| 116 | for x in ignore_minify): |
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| 117 | js.append(jsmin.jsmin(contents)) |
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| 118 | else: |
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| 119 | js.append(contents) |
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| 120 | else: |
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| 121 | js.append(filename) |
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| 122 | dest_key = hashlib_md5(repr(processed)).hexdigest() |
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| 123 | if css and concat_css: |
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| 124 | css = '\n\n'.join(contents for contents in css) |
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| 125 | if not inline_css: |
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| 126 | temppath = os.path.join(folder, 'static', temp) |
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| 127 | if not os.path.exists(temppath): |
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| 128 | os.mkdir(temppath) |
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| 129 | dest = "compressed_%s.css" % dest_key |
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| 130 | tempfile = os.path.join(temppath, dest) |
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| 131 | write_binary_file(tempfile, css) |
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| 132 | css = path_info + '/%s' % dest |
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| 133 | new_files.append(css) |
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| 134 | else: |
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| 135 | new_files.append(('css:inline', css)) |
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| 136 | else: |
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| 137 | new_files += css |
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| 138 | if js and concat_js: |
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| 139 | js = '\n'.join(contents for contents in js) |
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| 140 | if inline_js: |
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| 141 | js = ('js:inline', js) |
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| 142 | else: |
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| 143 | temppath = os.path.join(folder, 'static', temp) |
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| 144 | if not os.path.exists(temppath): |
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| 145 | os.mkdir(temppath) |
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| 146 | dest = "compressed_%s.js" % dest_key |
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| 147 | tempfile = os.path.join(folder, 'static', temp, dest) |
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| 148 | write_binary_file(tempfile, js) |
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| 149 | js = path_info + '/%s' % dest |
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| 150 | new_files.append(js) |
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| 151 | else: |
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| 152 | new_files += js |
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| 153 | return new_files |
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