From 33daac87f1d8f234f46e8c544343ac25827387c8 Mon Sep 17 00:00:00 2001
From: Dave Kliczbor <dave@fsinfo.cs.tu-dortmund.de>
Date: Fri, 26 Oct 2018 18:52:32 +0200
Subject: [PATCH] Added script to regenerate client minified/header files from
 sources

---
 tools/prepare_static_ui_sources.py | 107 +++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100755 tools/prepare_static_ui_sources.py

diff --git a/tools/prepare_static_ui_sources.py b/tools/prepare_static_ui_sources.py
new file mode 100755
index 0000000..5be705e
--- /dev/null
+++ b/tools/prepare_static_ui_sources.py
@@ -0,0 +1,107 @@
+#!/usr/bin/env python3
+
+from jsmin import jsmin as jsminify
+from htmlmin import minify as htmlminify
+from csscompressor import compress as cssminify
+import gzip
+import sys
+import os.path
+import argparse
+import re
+from glob import glob
+
+TARGET_TEMPLATE = '''const char {constant}[] PROGMEM = R"=====(
+{minidata}
+)=====";
+
+const uint8_t {constant}_GZIP[{gziplen}] PROGMEM = {{ {gzipdata} }};
+'''
+
+def parse_arguments(args=None):
+    parser = argparse.ArgumentParser(
+        description="Prepares ESPUI header files by minifying and gzipping JS and CSS source files.")
+    parser.add_argument("--sources", "-s", dest="sources", default="../examples/gui/data",
+                        help="Sources directory containing CSS or JS files")
+    parser.add_argument("--target", "-t", dest="target", default="../src",
+                        help="Target directory containing header files")
+    parser.add_argument("--nostoremini", "-m", action="store_false", dest="storemini",
+                        help="Store intermediate minified files")
+    args = parser.parse_args(args)
+    return args
+
+def get_context(infile, outfile):
+    infile	= os.path.realpath(infile)
+    dir, name, type 	= (os.path.basename(os.path.dirname(infile)), os.path.basename(infile).split(os.path.extsep)[0], os.path.basename(infile).split(os.path.extsep)[-1] )
+    type = type.strip(".")
+    if dir == type:
+        dir = os.path.basename(os.path.dirname(os.path.dirname(infile)))
+    if type == "htm":
+        type = 'html'
+    name = os.path.basename(name)
+    indir	= os.path.dirname(infile)
+    if os.path.isdir(outfile):
+        outdir 	= os.path.realpath(outfile)
+        outfilename	= "%s%s%s.h" % (dir, name.capitalize(), type.upper())
+        outfile	= os.path.realpath(os.path.sep.join([outdir, outfilename]))
+    else:
+        outfile	= os.path.realpath(outfile)
+        outdir	= os.path.dirname(outfile)
+        outfilename	= os.path.basename(outfile)
+    minifile	= re.sub('\.([^.]+)$', '.min.\\1', infile) if not ".min." in infile else infile
+    constant	= '%s_%s' % (type.upper(), name.upper())
+    return locals()
+    
+def perform_gzip(c):
+    compressed = gzip.compress(bytes(c['minidata'], 'utf-8'))
+    c['gzipdata'] = ','.join([ str(b) for b in compressed ])
+    c['gziplen'] = len(compressed)
+    print("  GZIP data length: %s" % c['gziplen'])
+    return c
+    
+def perform_minify(c):
+    with open(c['infile']) as infile:
+        minifier = cssminify if c['type'] == 'css' else jsminify if c['type'] == 'js' else htmlminify
+        print("  Using %s minifier" % c['type'])
+        c['minidata'] = minifier(infile.read())
+    return perform_gzip(c)
+
+def process_file(infile, outdir, storemini=True):
+    print("Processing file %s" % infile)
+    c = get_context(infile, outdir)
+    c = perform_minify(c)
+    if storemini:
+        if c['infile'] == c['minifile']:
+            print("  Original file is already minified, refusing to overwrite it")
+        else:
+            print("  Writing minified file %s" % c['minifile'])
+            with open(c['minifile'], 'w+') as minifile:
+                minifile.write(c['minidata'])
+    with open(c['outfile'], 'w+') as outfile:
+        print("  Using C constant names %s and %s_GZIP" % (c['constant'], c['constant']))
+        print("  Writing C header file %s" % c['outfile'])
+        outfile.write(TARGET_TEMPLATE.format(**c))
+        
+def filenamefilter(pattern, strings):
+    return filter(re.compile(pattern).search, strings)        
+        
+def process_dir(sourcedir, outdir, recursive=True, storemini=True):
+    pattern = r'/*\.(css|js|htm|html)$'
+    files = glob(sourcedir + "/**/*", recursive=True)+glob(sourcedir + "/*") if recursive else glob(sourcedir + "/*")
+    files = filenamefilter(pattern, files)
+    for f in set(files):
+        if not '.min.' in f:
+            process_file(f, outdir, storemini)
+        elif not os.path.isfile(f.replace(".min.", ".")):
+            process_file(f, outdir, storemini)
+
+def main(args):
+    if not args.sources is None:
+        if os.path.isfile(args.sources):
+            print("Source %s is a file, will process one file only." % args.sources)
+            process_file(args.sources, args.target, storemini = args.storemini)
+        elif os.path.isdir(args.sources):
+            print("Source %s is a directory, searching for files recursively..." % args.sources)
+            process_dir(args.sources, args.target, recursive = True, storemini = args.storemini)
+
+if __name__ == "__main__" and "get_ipython" not in dir():
+    main(parse_arguments())