mirror of https://gerrit.osmocom.org/osmo-dev
106 lines
2.7 KiB
Python
106 lines
2.7 KiB
Python
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#!/usr/bin/env python3
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import os, sys, re, shutil
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def get_arg(nr, default):
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if len(sys.argv) > nr:
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return sys.argv[nr]
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return default
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local_config_file = os.path.realpath(get_arg(1, 'local_config'))
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tmpl_dir = get_arg(2, 'tmpl')
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if not os.path.isdir(tmpl_dir):
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print("Template dir does not exist: %r" % tmpl_dir)
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exit(1)
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print('using config file %r\non templates %r' % (local_config_file, tmpl_dir))
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# read in variable values from config file
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local_config = {}
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line_nr = 0
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for line in open(local_config_file):
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line_nr += 1
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line = line.strip('\n')
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if not '=' in line:
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if line:
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print("Error: %r line %d: %r" % (local_config_file, line_nr, line))
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exit(1)
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continue
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split_pos = line.find('=')
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name = line[:split_pos]
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val = line[split_pos + 1:]
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if val.startswith('"') and val.endswith('"'):
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val = val[1:-1]
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if name in local_config:
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print("Error: duplicate identifier in %r line %d: %r" % (local_config_file, line_nr, line))
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local_config[name] = val
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print('config:\n\n' + '\n'.join('%s=%r' % (n,v) for n,v in local_config.items()))
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# replace variable names with above values recursively
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replace_re = re.compile('\$\{([A-Za-z0-9_]*)\}')
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command_re = re.compile('\$\{([A-Za-z0-9_]*)\(([^)]*)\)\}')
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idx = 0
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for tmpl_name in sorted(os.listdir(tmpl_dir)):
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tmpl_src = os.path.join(tmpl_dir, tmpl_name)
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dst = tmpl_name
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local_config['_fname'] = tmpl_name
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local_config['_name'] = os.path.splitext(tmpl_name)[0]
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local_config['_idx0'] = str(idx)
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idx += 1
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local_config['_idx1'] = str(idx)
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try:
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result = open(tmpl_src).read()
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except:
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print('Error in %r' % tmpl_src)
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raise
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while True:
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used_vars = set()
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for m in command_re.finditer(result):
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cmd = m.group(1)
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arg = m.group(2)
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if cmd == 'include':
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include_path = os.path.join(tmpl_dir, arg)
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if not os.path.isfile(include_path):
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print('Error: included file does not exist: %r in %r' % (include_path, tmpl_src))
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exit(1)
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try:
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incl = open(include_path).read()
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except:
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print('Cannot read %r for %r' % (include_path, tmpl_src))
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raise
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result = result.replace('${%s(%s)}' % (cmd, arg), incl)
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else:
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print('Error: unknown command: %r in %r' % (cmd, tmpl_src))
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exit(1)
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for m in replace_re.finditer(result):
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name = m.group(1)
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if not name in local_config:
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print('Error: undefined var %r in %r' % (name, tmpl_src))
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exit(1)
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used_vars.add(name)
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if not used_vars:
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break
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for var in used_vars:
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result = result.replace('${%s}' % var, local_config.get(var))
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with open(dst, 'w') as dst_file:
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dst_file.write(result)
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shutil.copymode(tmpl_src, dst)
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# vim: ts=2 sw=2 expandtab
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