| #!/usr/bin/env python3 |
| |
| import os, re, sys, subprocess, shutil, tempfile |
| |
| os.chdir (os.path.dirname (__file__)) |
| |
| if len (sys.argv) < 2: |
| ragel_sources = [x for x in os.listdir ('.') if x.endswith ('.rl')] |
| else: |
| ragel_sources = sys.argv[2:] |
| |
| ragel = shutil.which ('ragel') |
| |
| if not ragel: |
| print ('You have to install ragel if you are going to develop HarfBuzz itself') |
| exit (1) |
| |
| if not len (ragel_sources): |
| exit (77) |
| |
| tempdir = tempfile.mkdtemp () |
| |
| for rl in ragel_sources: |
| hh = rl.replace ('.rl', '.hh') |
| shutil.copy (rl, tempdir) |
| # writing to stdout has some complication on Windows |
| subprocess.Popen ([ragel, '-e', '-F1', '-o', hh, rl], cwd=tempdir).wait () |
| |
| generated_path = os.path.join (tempdir, hh) |
| with open (generated_path, "rb") as temp_file: |
| generated = temp_file.read() |
| |
| with open (hh, "rb") as current_file: |
| current = current_file.read() |
| |
| # overwrite only if is changed |
| if generated != current: |
| shutil.copyfile (generated_path, hh) |
| |
| shutil.rmtree (tempdir) |
