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sync-file.py

@@ -0,0 +1,130 @@
+#!/usr/bin/python3
+
+import os
+import subprocess
+import getopt
+import sys
+import filecmp
+import shutil
+
+CRED = '\033[91m'
+CEND = '\033[0m'
+CCYAN = '\033[96m'
+CBLUE = '\033[94m'
+CGREEN = '\033[92m'
+
+def _usage():
+   """ print command line options """
+   print("usage sync-file.py -h/--help -c/--compare-path=<path> -p/--print file\n"\
+      "file                       # input fil , left side of diff\n"\
+      "-c / -compare-path= <path> # <path> to directory to file-sync\n"\
+      "-p / --print               # print only, dont do any actual sync\n"\
+      "-h / --help                # Help ")
+
+def _get_last_mod_date(file):
+   try: 
+      return int(round(os.path.getmtime(file)))
+   except FileNotFoundError as err:
+      print(err)
+      return None
+
+def _diff_files(src_file, dst_file):
+   diff_cmd = shutil.which('meld')
+
+   if diff_cmd != None:
+      try:
+         subprocess.run([diff_cmd, src_file, dst_file])
+      except:
+         print("can't start diff tool")
+   else:
+      print("can't find diff tool")
+
+def _conditional_copy_file(src_file, dst_file):
+   if _ask():
+      os.system('cp ' + src_file + ' ' + dst_file) 
+   
+def _ask():
+   try: 
+      answer = lower(input('\tproceed with copy? [Y/n]: '))
+   except EOFError:
+      return False
+
+   ret_val = False
+   if answer == '' or answer == 'y' or answer == 'yes':
+      ret_val =  True
+   
+   return ret_val
+
+def main():
+   try:
+      opts, args = getopt.getopt(sys.argv[1:], "dphc:", ["diff", "compare-path=", "print", "help"])
+   except getopt.GetoptError as err:
+      # print help information and exit:
+      print(err) # will print something like "option -a not recognized"
+      sys.exit(2)
+
+   file_diff = False
+   dry_run = False
+   compare_path = "."
+
+   ### parse input command line
+   for o, a in opts:
+      if o in ("-h", "--help"):
+         _usage()
+         sys.exit()
+      elif o in ("-p", "--print"):
+         dry_run = True
+      elif o in ("-c", "--compare-path"):
+         compare_path = a
+      elif o in ("-d", "--diff"):
+         file_diff = True
+      else:
+         print(o, a)
+         assert False, "unhandled option"
+
+   for left_file in args:
+      #left_file contain the full path + file name. pick out filename only and apply the compare_path
+      right_file = compare_path + '/' + left_file #os.path.basename(left_file)
+      #print(left_file)
+      #print(right_file)
+      left_file_exists = os.path.isfile(left_file)
+      right_file_exists = os.path.isfile(right_file)
+      
+      if not left_file_exists:
+         print(CRED + '\tno such file... ' + left_file + CEND)
+      if not right_file_exists:
+         print(CRED + '\tno such file... ' + right_file + CEND)
+
+         if not dry_run:
+            _conditional_copy_file(left_file, right_file)
+
+      if left_file_exists and right_file_exists:
+         #if left and right are different, decide which file is to be copied
+         if not filecmp.cmp(left_file, right_file):
+            left_file_mod_time = _get_last_mod_date(left_file)
+            right_file_mod_time = _get_last_mod_date(right_file)
+
+            if left_file_mod_time < right_file_mod_time:  # left file newer
+               src_file = right_file
+               dst_file = left_file
+               color = CBLUE     
+            else:                                         # right file newer
+               src_file = left_file
+               dst_file = right_file
+               color = CCYAN
+
+            print(color + '\t' + src_file + ' is newer than ' + dst_file + '...' + CEND)
+
+            if not dry_run:
+               _conditional_copy_file(src_file, dst_file)
+
+            if file_diff:
+               _diff_files(left_file, right_file)
+
+
+         else:
+            print(CGREEN + '\t' + os.path.basename(left_file) + ' same same...' + CEND)
+
+
+if __name__ == '__main__':
+   main()