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No debug file and no parser rules stored on disk # The rules are small enough to be generated on the fly self.parser = yacc.yacc(module = self, write_tables = False, debug = False) self.lines_checked = 0 self.checked = 0 self.spdx_valid = 0 self.spdx_errors = 0 self.curline = 0 self.deepest = 0 # Validate License and Exception IDs def validate(self, tok): id = tok.value.upper() if tok.type == 'ID': if not id in self.spdx.licenses: raise ParserException(tok, 'Invalid License ID') self.lastid = id elif tok.type == 'EXC': if id not in self.spdx.exceptions: raise ParserException(tok, 'Invalid Exception ID') if self.lastid not in self.spdx.exceptions[id]: raise ParserException(tok, 'Exception not valid for license %s' %self.lastid) self.lastid = None elif tok.type != 'WITH': self.lastid = None # Lexer functions def t_RPAR(self, tok): r'\)' self.lasttok = tok.type return tok def t_LPAR(self, tok): r'\(' self.lasttok = tok.type return tok def t_ID(self, tok): r'[A-Za-z.0-9\-+]+' if self.lasttok == 'EXC': print(tok) raise ParserException(tok, 'Missing parentheses') tok.value = tok.value.strip() val = tok.value.upper() if val in self.reserved: tok.type = val elif self.lasttok == 'WITH': tok.type = 'EXC' self.lasttok = tok.type self.validate(tok) return tok def t_error(self, tok): raise ParserException(tok, 'Invalid token') def p_expr(self, p): '''expr : ID | ID WITH EXC | expr AND expr | expr OR expr | LPAR expr RPAR''' pass def p_error(self, p): if not p: raise ParserException(None, 'Unfinished license expression') else: raise ParserException(p, 'Syntax error') def parse(self, expr): self.lasttok = None self.lastid = None self.parser.parse(expr, lexer = self.lexer) def parse_lines(self, fd, maxlines, fname): self.checked += 1 self.curline = 0 try: for line in fd: line = line.decode(locale.getpreferredencoding(False), errors='ignore') self.curline += 1 if self.curline > maxlines: break self.lines_checked += 1 if line.find("SPDX-License-Identifier:") < 0: continue expr = line.split(':')[1].strip() # Remove trailing comment closure if line.strip().endswith('*/'): expr = expr.rstrip('*/').strip() # Special case for SH magic boot code files if line.startswith('LIST \"'): expr = expr.rstrip('\"').strip() self.parse(expr) self.spdx_valid += 1 # # Should we check for more SPDX ids in the same file and # complain if there are any? # break except ParserException as pe: if pe.tok: col = line.find(expr) + pe.tok.lexpos tok = pe.tok.value sys.stdout.write('%s: %d:%d %s: %s\n' %(fname, self.curline, col, pe.txt, tok)) else: sys.stdout.write('%s: %d:0 %s\n' %(fname, self.curline, col, pe.txt)) self.spdx_errors += 1 def scan_git_tree(tree): for el in tree.traverse(): # Exclude stuff which would make pointless noise # FIXME: Put this somewhere more sensible if el.path.startswith("LICENSES"): continue if el.path.find("license-rules.rst") >= 0: continue if not os.path.isfile(el.path): continue with open(el.path, 'rb') as fd: parser.parse_lines(fd, args.maxlines, el.path) def scan_git_subtree(tree, path): for p in path.strip('/').split('/'): tree = tree[p] scan_git_tree(tree) if __name__ == '__main__': ap = ArgumentParser(description='SPDX expression checker') ap.add_argument('path', nargs='*', help='Check path or file. If not given full git tree scan. For stdin use "-"') ap.add_argument('-m', '--maxlines', type=int, default=15, help='Maximum number of lines to scan in a file. Default 15') ap.add_argument('-v', '--verbose', action='store_true', help='Verbose statistics output') args = ap.parse_args() # Sanity check path arguments if '-' in args.path and len(args.path) > 1: sys.stderr.write('stdin input "-" must be the only path argument\n') sys.exit(1) try: # Use git to get the valid license expressions repo = git.Repo(os.getcwd()) assert not repo.bare # Initialize SPDX data spdx = read_spdxdata(repo) # Initilize the parser parser = id_parser(spdx) except SPDXException as se: if se.el: sys.stderr.write('%s: %s\n' %(se.el.path, se.txt)) else: sys.stderr.write('%s\n' %se.txt) sys.exit(1) except Exception as ex: sys.stderr.write('FAIL: %s\n' %ex) sys.stderr.write('%s\n' %traceback.format_exc()) sys.exit(1) try: if len(args.path) and args.path[0] == '-': stdin = os.fdopen(sys.stdin.fileno(), 'rb') parser.parse_lines(stdin, args.maxlines, '-') else: if args.path: for p in args.path: if os.path.isfile(p): parser.parse_lines(open(p, 'rb'), args.maxlines, p) elif os.path.isdir(p): scan_git_subtree(repo.head.reference.commit.tree, p) else: sys.stderr.write('path %s does not exist\n' %p) sys.exit(1) else: # Full git tree scan scan_git_tree(repo.head.commit.tree) if args.verbose: sys.stderr.write('\n') sys.stderr.write('License files: %12d\n' %spdx.license_files) sys.stderr.write('Exception files: %12d\n' %spdx.exception_files) sys.stderr.write('License IDs %12d\n' %len(spdx.licenses)) sys.stderr.write('Exception IDs %12d\n' %len(spdx.exceptions)) sys.stderr.write('\n') sys.stderr.write('Files checked: %12d\n' %parser.checked) sys.stderr.write('Lines checked: %12d\n' %parser.lines_checked) sys.stderr.write('Files with SPDX: %12d\n' %parser.spdx_valid) sys.stderr.write('Files with errors: %12d\n' %parser.spdx_errors) sys.exit(0) except Exception as ex: sys.stderr.write('FAIL: %s\n' %ex) sys.stderr.write('%s\n' %traceback.format_exc()) sys.exit(1)