Use a pre-built minified CodeMirror in the release build

I've started to maintain a minified CodeMirror distribution at
https://www.npmjs.com/package/codemirror-minified. It is released
on both NPM and WebJars with a version number that matches the
current version of CodeMirror. It comes with all non-test
JavaScript and CSS files minified.

Commit 7b11d6ad30
(change I05d925c94a3c0368366e9d3ad109cf84492810fc) already turned off
CodeMirror obfuscation in non-release builds. With this further change,
we can avoid running Closure Compiler altogether.

Removed the special case for CodeMirror in
Documentation/gen_licenses.py since it's no longer needed.

Removed the now unused js_minify() rule and the rules for downloading
Closure Compiler and its externs. They will be re-added to tools/js for
minifying PolyGerrit.

Change-Id: I36b4c29e2300384f49d3660266cc7b89140c9faf

lib/codemirror/BUCK

@@ -1,159 +1,108 @@
 include_defs('//lib/maven.defs')
 include_defs('//lib/codemirror/cm.defs')
-include_defs('//lib/codemirror/closure.defs')
 
-REPO = MAVEN_CENTRAL
 VERSION = '5.13.2'
-SHA1 = '4a26f060aeca679fdf751d2b480499c8a5f71e47'
+TOP = 'META-INF/resources/webjars/codemirror/%s' % VERSION
+TOP_MINIFIED = 'META-INF/resources/webjars/codemirror-minified/%s' % VERSION
 
-if REPO == MAVEN_CENTRAL:
-  URL = REPO + 'org/webjars/codemirror/%s/codemirror-%s.jar' % (VERSION, VERSION)
-  TOP = 'META-INF/resources/webjars/codemirror/%s' % VERSION
-  ZIP = 'codemirror-%s.jar' % VERSION
-else:
-  URL = REPO + 'net/codemirror/codemirror-%s.zip' % VERSION
-  TOP = 'codemirror-%s' % VERSION
-  ZIP = 'codemirror-%s.zip' % VERSION
-
-
-CLOSURE_VERSION = 'v20160315'
-
-CLOSURE_COMPILER_ARGS = [
-  '--compilation_level SIMPLE_OPTIMIZATIONS',
-  '--language_out ECMASCRIPT5_STRICT',
-  '--warning_level QUIET'
-]
-
-genrule(
-  name = 'css',
-  cmd = ';'.join([
-      "echo '/** @license' >$OUT",
-      'unzip -p $(location :zip) %s/LICENSE >>$OUT' % TOP,
-      "echo '*/' >>$OUT",
-    ] +
-    ['unzip -p $(location :zip) %s/%s >>$OUT' % (TOP, n)
-     for n in CM_CSS]
-  ),
-  out = 'cm.css',
+maven_jar(
+  name = 'codemirror-minified',
+  id = 'org.webjars.npm:codemirror-minified:' + VERSION,
+  sha1 = '420b73c0dfa7885ff7f60df2dce7d2cbae4ffeef',
+  attach_source = False,
+  license = 'codemirror-minified',
+  visibility = [],
 )
 
-for n in CM_THEMES:
+maven_jar(
+  name = 'codemirror-original',
+  id = 'org.webjars.npm:codemirror:' + VERSION,
+  sha1 = '4a26f060aeca679fdf751d2b480499c8a5f71e47',
+  attach_source = False,
+  license = 'codemirror-original',
+  visibility = [],
+)
+
+for archive, suffix, top in [('codemirror-original', '', TOP), ('codemirror-minified', '_r', TOP_MINIFIED)]:
+  # Main JavaScript and addons
   genrule(
-    name = 'theme_%s' % n,
+    name = 'cm' + suffix,
     cmd = ';'.join([
         "echo '/** @license' >$OUT",
-        'unzip -p $(location :zip) %s/LICENSE >>$OUT' % TOP,
+        'unzip -p $(location :%s) %s/LICENSE >>$OUT' % (archive, top),
         "echo '*/' >>$OUT",
-        'unzip -p $(location :zip) %s/theme/%s.css >>$OUT' % (TOP, n)
-      ]
+      ] +
+      ['unzip -p $(location :%s) %s/%s >>$OUT' % (archive, top, n) for n in CM_JS] +
+      ['unzip -p $(location :%s) %s/addon/%s >>$OUT' % (archive, top, n)
+       for n in CM_ADDONS]
     ),
-    out = 'theme_%s.css' % n,
+    out = 'cm%s.js' % suffix,
   )
 
-genrule(
-  name = 'cm-verbose',
-  cmd = ';'.join([
-      "echo '/** @license' >$OUT",
-      'unzip -p $(location :zip) %s/LICENSE >>$OUT' % TOP,
-      "echo '*/' >>$OUT",
-    ] +
-    ['unzip -p $(location :zip) %s/%s >>$OUT' % (TOP, n) for n in CM_JS] +
-    ['unzip -p $(location :zip) %s/addon/%s >>$OUT' % (TOP, n)
-     for n in CM_ADDONS]
-  ),
-  out = 'cm-verbose.js',
-)
-
-js_minify(
-  name = 'js',
-  generated = [':cm-verbose'],
-  compiler_args = CLOSURE_COMPILER_ARGS,
-  out = 'cm.js'
-)
-
-for n in CM_MODES:
-  genrule (
-    name = 'mode_%s_src' % n,
+  # Main CSS
+  genrule(
+    name = 'css' + suffix,
     cmd = ';'.join([
-      "echo '/** @license' >$OUT",
-      'unzip -p $(location :zip) %s/LICENSE >>$OUT' % TOP,
-      "echo '*/' >>$OUT",
-      'unzip -p $(location :zip) %s/mode/%s/%s.js >>$OUT' % (TOP, n, n),
-      ]),
-    out = 'mode_%s_src.js' %n,
-  )
-  js_minify(
-    name = 'mode_%s_js' % n,
-    generated = [':mode_%s_src' % n],
-    compiler_args = CLOSURE_COMPILER_ARGS,
-    out = 'mode_%s.js' % n,
+        "echo '/** @license' >$OUT",
+        'unzip -p $(location :%s) %s/LICENSE >>$OUT' % (archive, top),
+        "echo '*/' >>$OUT",
+      ] +
+      ['unzip -p $(location :%s) %s/%s >>$OUT' % (archive, top, n)
+       for n in CM_CSS]
+    ),
+    out = 'cm%s.css' % suffix,
   )
 
-prebuilt_jar(
-  name = 'codemirror_r',
-  binary_jar = ':jar_r',
-  deps = [
-    ':jar_r',
-    '//lib:LICENSE-codemirror',
-  ],
-  visibility = ['PUBLIC'],
-)
+  # Modes
+  for n in CM_MODES:
+    genrule (
+      name = 'mode_%s%s' % (n, suffix),
+      cmd = ';'.join([
+        "echo '/** @license' >$OUT",
+        'unzip -p $(location :%s) %s/LICENSE >>$OUT' % (archive, top),
+        "echo '*/' >>$OUT",
+        'unzip -p $(location :%s) %s/mode/%s/%s.js >>$OUT' % (archive, top, n, n),
+        ]),
+      out = 'mode_%s%s.js' % (n, suffix),
+    )
 
-prebuilt_jar(
-  name = 'codemirror',
-  binary_jar = ':jar',
-  deps = [
-    ':jar',
-    '//lib:LICENSE-codemirror',
-  ],
-  visibility = ['PUBLIC'],
-)
+  # Themes
+  for n in CM_THEMES:
+    genrule(
+      name = 'theme_%s%s' % (n, suffix),
+      cmd = ';'.join([
+          "echo '/** @license' >$OUT",
+          'unzip -p $(location :%s) %s/LICENSE >>$OUT' % (archive, top),
+          "echo '*/' >>$OUT",
+          'unzip -p $(location :%s) %s/theme/%s.css >>$OUT' % (archive, top, n)
+        ]
+      ),
+      out = 'theme_%s%s.css' % (n, suffix),
+    )
 
-for suffix, cm, mode_suffix in [('_r', ':js', '_js'), ('', ':cm-verbose', '_src')]:
+  # Jar packaging
   genrule(
     name = 'jar' + suffix,
     cmd = ';'.join([
       'cd $TMP',
       'mkdir -p net/codemirror/{lib,mode,theme}',
-      'cp $(location :css) net/codemirror/lib',
-      'cp $(location %s) net/codemirror/lib/cm.js' % cm]
-      + ['cp $(location :mode_%s%s) net/codemirror/mode/%s.js' % (n, mode_suffix, n)
+      'cp $(location :css%s) net/codemirror/lib/cm.css' % suffix,
+      'cp $(location :cm%s) net/codemirror/lib/cm.js' % suffix]
+      + ['cp $(location :mode_%s%s) net/codemirror/mode/%s.js' % (n, suffix, n)
          for n in CM_MODES]
-      + ['cp $(location :theme_%s) net/codemirror/theme/%s.css' % (n, n)
+      + ['cp $(location :theme_%s%s) net/codemirror/theme/%s.css' % (n, suffix, n)
          for n in CM_THEMES]
       + ['zip -qr $OUT net/codemirror/{lib,mode,theme}']),
     out = 'codemirror%s.jar' % suffix,
-)
+  )
 
-genrule(
-  name = 'zip',
-  cmd = '$(exe //tools:download_file)' +
-    ' -o $OUT' +
-    ' -u ' + URL +
-    ' -v ' + SHA1,
-  out = ZIP,
-)
+  prebuilt_jar(
+    name = 'codemirror' + suffix,
+    binary_jar = ':jar%s' % suffix,
+    deps = [
+      ':jar' + suffix,
+      '//lib:LICENSE-' + archive,
+    ],
+    visibility = ['PUBLIC'],
+  )
 
-java_binary(
-  name = 'js_minifier',
-  main_class = 'com.google.javascript.jscomp.CommandLineRunner',
-  deps = [':compiler-jar']
-)
-
-maven_jar(
-  name = 'compiler-jar',
-  id = 'com.google.javascript:closure-compiler:' + CLOSURE_VERSION,
-  sha1 = 'f5b1a03f83a014e545db60a795fcf94db14a5ba2',
-  license = 'DO_NOT_DISTRIBUTE',
-  deps = [':closure-compiler-externs'],
-  visibility = [],
-)
-
-maven_jar(
-  name = 'closure-compiler-externs',
-  id = 'com.google.javascript:closure-compiler-externs:' + CLOSURE_VERSION,
-  sha1 = 'a0c252a8fced5f0a542302e3f03066c8144d7371',
-  license = 'Apache2.0',
-  visibility = [],
-  attach_source = False,
-)

lib/codemirror/closure.defs

@@ -1,18 +0,0 @@
-def js_minify(
-    name,
-    out,
-    compiler_args = [],
-    srcs = [],
-    generated = []):
-  cmd = ['$(exe :js_minifier) --js_output_file $OUT'] + compiler_args
-  if srcs:
-    cmd.append('$SRCS')
-  if generated:
-    cmd.extend(['$(location %s)' % n for n in generated])
-
-  genrule(
-    name = name,
-    cmd = ' '.join(cmd),
-    srcs = srcs,
-    out = out,
-  )