#!/usr/bin/env python import os import shutil import subprocess import sys verbose = False html_template = """ """ usage = """%s [option] Takes javascript source, runs it through compiler and Charles Boccato's jsexe to generate minified output.\n Command line options without arguments: -C, --no-compile Do not compile, assume compilation already done. -h, --help Print this help text. -N, --no-compressed Do not compress, just write the uncompressed HTML. -U, --no-uncompressed Do not write uncompressed HTML. -v, --verbose Verbose output.\n Command line options with arguments: -c, --closure Specity path to closure compiler. (default: '%s') -j, --jsexe Specify path to jsexe.exe. (default: '%s') -p, --pnginator Specify path to pnginator. (default: '%s')""" def execute_command(cmd): """Run a command.""" if verbose: print("executing command: '%s'" % (str(" ".join(cmd)))) try: proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE) (so, se) = proc.communicate() return proc.returncode except OSError as ee: print("ERROR: failed to execute binary: '%s'" % (cmd[0])) raise ee def run_closure(binary, infile, outfile): """Execute closure compiler.""" cmd = ["java", "-jar", binary, "--compilation_level", "ADVANCED_OPTIMIZATIONS", "--js", infile, "--js_output_file", outfile] ret = execute_command(cmd) if 0 != ret: print("closure compiler command failed: %i" % (ret)) sys.exit(1) if verbose: print("wrote compiled source: '%s'" % (outfile)) def run_jsexe(binary, infile, outfile): """Execute jsexe binary.""" cmd = [binary, "-cn", infile, outfile] ret = execute_command(cmd) if 0 != ret: print("jsexe command failed: %i" % (ret)) sys.exit(1) if verbose: print("wrote compressed binary: '%s'" % (outfile)) def run_pnginator(binary, infile, outfile): """Execute pnginator script.""" cmd = ["ruby", binary, infile, outfile] ret = execute_command(cmd) if 0 != ret: print("pnginator command failed: %i" % (ret)) sys.exit(1) if verbose: print("wrote compressed binary: '%s'" % (outfile)) def write_html_outlier(infile, outfile): """Write uncompressed output file.""" infd = open(infile, "r") outfd = open(outfile, "w") outfd.write(html_template % (str(infd.read()))) if verbose: print("wrote uncompressed html: '%s'" % (outfile)) if __name__ == "__main__": if "posix" == os.name: closure = "/usr/local/src/closure_compiler/compiler.jar" pnginator = "/usr/local/src/pnginator/pnginator.rb" else: closure = "c:\local\closure_compiler\compiler.jar" pnginator = "c:\local\pnginator\pnginator.rb" input_file = None jsexe = "c:\local\jsexe\jsexe.exe" perform_compile = True write_compressed = True write_uncompressed = True ii = 1 while len(sys.argv) > ii: jj = sys.argv[ii] if jj in ("-c", "--help"): ii += 1 closure = sys.argv[ii] elif jj in ("-C", "--no-compile"): perform_compile = False elif jj in ("-h", "--help"): print(usage % (os.path.basename(__file__), closure, jsexe)) sys.exit(0) elif jj in ("-n", "--no-compressed"): write_compressed = False elif jj in ("-j", "--jsexe"): ii += 1 jsexe = sys.argv[ii] elif jj in ("-U", "--no-uncompressed"): write_uncompressed = False elif jj in ("-v", "--verbose"): verbose = True else: if input_file: print("error: only one input file accepted") sys.exit(1) else: input_file = jj ii += 1 if verbose: print("using input file: '%s'" % (input_file)) closure_input = input_file (input_path, input_base) = os.path.split(input_file) (input_base, input_extension) = os.path.splitext(input_base) uncompressed_output = input_base + "_uncompressed.html" closure_output = input_base + "_compiled" + input_extension compressed_output = input_base + ".png.html" if input_path: closure_output = os.path.normpath(input_path + '/' + closure_output) compressed_output = os.path.normpath(input_path + '/' + compressed_output) if write_uncompressed: write_html_outlier(input_file, uncompressed_output) if write_compressed: if perform_compile: if os.path.isfile(closure): if verbose: print("using closure compiler: '%s'" % (closure)) run_closure(closure, input_file, closure_output) else: print("WARNING: closure compiler (tried: '%s') not found, going without" % (closure)) shutil.copyfile(input_file, closure_output) if os.path.isfile(jsexe): if verbose: print("using jsexe binary: '%s'" % (jsexe)) run_jsexe(jsexe, closure_output, compressed_output) elif os.path.isfile(pnginator): if verbose: print("using pnginator binary: '%s'" % (pnginator)) run_pnginator(pnginator, closure_output, compressed_output) else: print("ERROR: no compressor found for output binary") sys.exit(1) if verbose: print("final size: %i bytes" % (os.stat(compressed_output).st_size)) sys.exit(0)