1  #!/usr/bin/env python3
       2  
       3  "This tool is intended to be used from meson"
       4  
       5  import os, sys, shutil, re
       6  
       7  if len (sys.argv) < 4:
       8  	sys.exit(__doc__)
       9  
      10  version = sys.argv[1]
      11  major, minor, micro = version.split (".")
      12  
      13  OUTPUT = sys.argv[2]
      14  INPUT = sys.argv[3]
      15  CURRENT_SOURCE_DIR = os.path.dirname(INPUT)
      16  
      17  try:
      18  	with open (OUTPUT, "r", encoding='utf-8') as old_output:
      19  		for line in old_output:
      20  			old_version = re.match (r"#define HB_VERSION_STRING \"(\d.\d.\d)\"", line)
      21  			if old_version and old_version[1] == version:
      22  				sys.exit ()
      23  except IOError:
      24  	pass
      25  
      26  with open (INPUT, "r", encoding='utf-8') as template:
      27  	with open (OUTPUT, "wb") as output:
      28  		output.write (template.read ()
      29  			.replace ("@HB_VERSION_MAJOR@", major)
      30  			.replace ("@HB_VERSION_MINOR@", minor)
      31  			.replace ("@HB_VERSION_MICRO@", micro)
      32  			.replace ("@HB_VERSION@", version)
      33  			.encode ())
      34  
      35  # copy it also to the source tree, but only if it has changed
      36  baseline_filename = os.path.join (CURRENT_SOURCE_DIR, os.path.basename (OUTPUT))
      37  with open(baseline_filename, "rb") as baseline:
      38  	with open(OUTPUT, "rb") as generated:
      39  		if baseline.read() != generated.read():
      40  			shutil.copyfile (OUTPUT, baseline_filename)