87 lines
2.1 KiB
Python
Executable file
87 lines
2.1 KiB
Python
Executable file
#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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# Give me a random hostname!
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import sys, os
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import random
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def read_file(filename) :
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ret = []
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with open(filename, 'r') as f_in :
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for line in f_in.readlines():
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line = line.strip()
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# ignore empty lines or comment
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if len(line) == 0 or line[0] in "#:!$%" : continue
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ret.append(line)
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return ret
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def file_exists(filename) :
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return os.path.exists(filename)
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def scan_files(path, suffix = ".txt") :
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ret = []
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with os.scandir(path) as dirs:
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for entry in dirs :
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filename = entry.name
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if filename.endswith(".txt") :
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ret.append(filename)
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return ret
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def usage() :
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print("print hostname suggestions")
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print("Usage: %s [OPTIONS] [FILES...]" % (sys.argv[0]))
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print("OPTIONS")
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print(" -h, --help Print this help message")
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print(" -l, --ls Print source files")
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if __name__ == "__main__" :
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# By default, print 10 lines, 4 entries each line
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n = 10
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c = 4
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hostnames = []
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filenames = []
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args = sys.argv[1:]
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for arg in args :
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if arg == "" : continue
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if arg[0] == '-' :
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if arg == "-h" or arg == "--help" :
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usage()
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sys.exit(0)
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elif arg == "-l" or arg == "--ls" :
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for filename in scan_files(".") :
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print(filename)
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sys.exit(0)
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else :
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filenames.append(arg)
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# If no files are given, take all files
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if len(filenames) == 0 :
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filenames = scan_files(".")
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# Load hostnames from files
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for filename in filenames :
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# Add txt if not yet present
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if not file_exists(filename) and not filename.endswith(".txt") :
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if file_exists(filename + ".txt") : filename += ".txt"
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if not file_exists(filename) :
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sys.stderr.write("file not found: %s\n" % (filename))
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sys.exit(1)
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hostnames += read_file(filename)
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if len(hostnames) == 0 :
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sys.stderr.write("no hostnames found\n")
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sys.exit(1)
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for i in range(n) :
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if len(hostnames) == 0 : break
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for j in range(c) :
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if len(hostnames) == 0 : break
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hostname = hostnames[random.randint(0, len(hostnames)-1)]
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hostnames.remove(hostname)
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sys.stdout.write("%-20s" % (hostname))
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sys.stdout.write("\n")
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