make-js-file-arrays.py [plain text]
from __future__ import print_function
import io
import os
from optparse import OptionParser
import sys
if sys.version_info.major == 2:
from StringIO import StringIO
else:
from io import StringIO
from jsmin import JavascriptMinify
def stringifyCodepoint(code):
if code < 128:
return '{0:d}'.format(code)
else:
return "'\\x{0:02x}'".format(code)
def chunk(list, chunkSize):
for i in range(0, len(list), chunkSize):
yield list[i:i + chunkSize]
def main():
parser = OptionParser(usage="usage: %prog [options] header source [input [input...]]")
parser.add_option('--no-minify', action='store_true', help='Do not run the input files through jsmin')
parser.add_option('-n', '--namespace', help='Namespace to use')
(options, arguments) = parser.parse_args()
if not options.namespace:
print('Error: must provide a namespace')
parser.print_usage()
exit(-1)
if len(arguments) < 3:
print('Error: must provide at least 3 arguments')
parser.print_usage()
exit(-1)
namespace = options.namespace
headerPath = arguments[0]
sourcePath = arguments[1]
inputPaths = arguments[2:]
headerFile = open(headerPath, 'w')
print('namespace {0:s} {{'.format(namespace), file=headerFile)
sourceFile = open(sourcePath, 'w')
print('#include "{0:s}"'.format(os.path.basename(headerPath)), file=sourceFile)
print('namespace {0:s} {{'.format(namespace), file=sourceFile)
jsm = JavascriptMinify()
for inputFileName in inputPaths:
inputStream = io.FileIO(inputFileName)
outputStream = StringIO()
if not options.no_minify:
jsm.minify(inputStream, outputStream)
characters = outputStream.getvalue()
else:
characters = inputStream.read()
size = len(characters)
variableName = os.path.splitext(os.path.basename(inputFileName))[0]
print('extern const char {0:s}JavaScript[{1:d}];'.format(variableName, size), file=headerFile)
print('const char {0:s}JavaScript[{1:d}] = {{'.format(variableName, size), file=sourceFile)
codepoints = list(map(ord, characters))
for codepointChunk in chunk(codepoints, 16):
print(' {0:s},'.format(','.join(map(stringifyCodepoint, codepointChunk))), file=sourceFile)
print('};', file=sourceFile)
print('}} // namespace {0:s}'.format(namespace), file=headerFile)
print('}} // namespace {0:s}'.format(namespace), file=sourceFile)
if __name__ == '__main__':
main()