88 lines
3.2 KiB
Python
88 lines
3.2 KiB
Python
#!/usr/bin/python2
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print """
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Variable Grabbler - version 4.0_pre1
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------------------------------------"""
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################################################################
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# Changes in this version:
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#===============================================================
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# *"\?" in a variable will now be replaced with a simple ?
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# before processing, remember to double escape that because
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# json (=> \\?)
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# *commands are now not run over and over again if not needed
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#
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################################################################
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# Exit codes:
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#===============================================================
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# 0 => normal exit
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# 1 => argument error
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# 2 => error while processing
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#
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# definitions
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import os, json, sys, subprocess
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def print_err(text):
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print >> sys.stderr, text
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if not len(sys.argv)==3:
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print_err("Error: Exactly two arguments required: \"python variable_grabbler.py <file to be rewritten> <config file>\"")
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sys.exit(1)
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print "Reading config file...",
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config_file = open(sys.argv[2],"r")
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config_values = json.loads(config_file.read().decode("utf-8"))
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config_file.close()
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print "Done."
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print "Working on file: "+sys.argv[1]
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for variable in config_values:
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print "> "+variable.upper()+" => ",
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file_in = open(sys.argv[1], "r")
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file_content = file_in.read()
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file_in.close()
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if config_values[variable][0] == "file":
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print "Found array. Adding file instead: " + config_values[variable][1]
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file_replacement = open(config_values[variable][1], "r")
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replacement = file_replacement.read()
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file_replacement.close()
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elif config_values[variable][0] == "exec":
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print "Found array. Executing command instead: " + config_values[variable][1]
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if variable.upper() in file_content:
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process = subprocess.Popen(config_values[variable][1], shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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stdout, stderr = process.communicate()
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if process.returncode == 0:
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print "Process exited normally. Replacing variable with the output from STDOUT..."
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print_err("Subprocess exited normally.\nThe following error messages were produced:")
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print_err(stderr)
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replacement = stdout
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else:
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print "Process exited abnormally. Exiting. No changes will be made."
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print_err("Subprocess exited abnormally. Exiting.\nThe following output was produced:")
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print_err(stdout)
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print_err("The following error messages were produced:")
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print_err(stderr)
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print "Exiting now."
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sys.exit(2)
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else:
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print variable.upper(),
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print "was not found in the file. Skipping command execution."
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else:
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replacement = repr(config_values[variable])
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print repr(replacement)
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# look for variable sections that contain question marks
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argument_positions = []
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i = 0
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while i<len(replacement):
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if replacement[i] == '?' and (i==0 or not replacement[i-1]=='\\'):
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argument_positions = argument_positions + [ i ]
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i = i+1
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print "DEBUG: " + argument_positions
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replacement = replacement.replace("\\?", "?")
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file_out = open(sys.argv[1], "w")
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file_out.write(file_content.decode('utf-8').replace("%" + variable.upper() + "%", replacement).encode('utf-8'))
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file_out.close()
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print "Done."
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