tools/lldbmacros/core/syntax_checker.py

   1 #!/usr/bin/env python
   2
   3 helpdoc = """
   4 A simple utility that verifies the syntax for python scripts.
   5 The checks it does are :
   6   * Check for 'tab' characters in .py files
   7   * Compile errors in py sources
   8 Usage:
   9   python syntax_checker.py <python_source_file> [<python_source_file> ..]
  10 """
  11 import py_compile
  12 import sys
  13 import os
  14 import re
  15
  16 tabs_search_rex = re.compile("^\s*\t+",re.MULTILINE|re.DOTALL)
  17
  18 if __name__ == "__main__":
  19     if len(sys.argv) < 2:
  20         print >>sys.stderr, "Error: Unknown arguments"
  21         print helpdoc
  22         sys.exit(1)
  23     for fname in sys.argv[1:]:
  24         if not os.path.exists(fname):
  25             print >>sys.stderr, "Error: Cannot recognize %s as a file" % fname
  26             sys.exit(1)
  27         if fname.split('.')[-1] != 'py':
  28             print "Note: %s is not a valid python file. Skipping." % fname
  29             continue
  30         fh = open(fname)
  31         strdata = fh.readlines()
  32         lineno = 0
  33         tab_check_status = True
  34         for linedata in strdata:
  35             lineno += 1
  36             if len(tabs_search_rex.findall(linedata)) > 0 :
  37                 print >>sys.stderr, "Error: Found a TAB character at %s:%d" % (fname, lineno)
  38                 tab_check_status = False
  39         if tab_check_status == False:
  40             print >>sys.stderr, "Error: Syntax check failed. Please fix the errors and try again."
  41             sys.exit(1)
  42         #now check for error in compilation
  43         try:
  44             compile_result = py_compile.compile(fname, cfile="/dev/null", doraise=True)
  45         except py_compile.PyCompileError as exc:
  46             print >>sys.stderr, str(exc)
  47             print >>sys.stderr, "Error: Compilation failed. Please fix the errors and try again."
  48             sys.exit(1)
  49         print "Success: Checked %s. No syntax errors found." % fname
  50     sys.exit(0)
  51