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//usr/lib/python2.4/lib-old/grep.py
# 'grep' import regex from regex_syntax import * opt_show_where = 0 opt_show_filename = 0 opt_show_lineno = 1 def grep(pat, *files): return ggrep(RE_SYNTAX_GREP, pat, files) def egrep(pat, *files): return ggrep(RE_SYNTAX_EGREP, pat, files) def emgrep(pat, *files): return ggrep(RE_SYNTAX_EMACS, pat, files) def ggrep(syntax, pat, files): if len(files) == 1 and type(files[0]) == type([]): files = files[0] global opt_show_filename opt_show_filename = (len(files) != 1) syntax = regex.set_syntax(syntax) try: prog = regex.compile(pat) finally: syntax = regex.set_syntax(syntax) for filename in files: fp = open(filename, 'r') lineno = 0 while 1: line = fp.readline() if not line: break lineno = lineno + 1 if prog.search(line) >= 0: showline(filename, lineno, line, prog) fp.close() def pgrep(pat, *files): if len(files) == 1 and type(files[0]) == type([]): files = files[0] global opt_show_filename opt_show_filename = (len(files) != 1) import re prog = re.compile(pat) for filename in files: fp = open(filename, 'r') lineno = 0 while 1: line = fp.readline() if not line: break lineno = lineno + 1 if prog.search(line): showline(filename, lineno, line, prog) fp.close() def showline(filename, lineno, line, prog): if line[-1:] == '\n': line = line[:-1] if opt_show_lineno: prefix = `lineno`.rjust(3) + ': ' else: prefix = '' if opt_show_filename: prefix = filename + ': ' + prefix print prefix + line if opt_show_where: start, end = prog.regs()[0] line = line[:start] if '\t' not in line: prefix = ' ' * (len(prefix) + start) else: prefix = ' ' * len(prefix) for c in line: if c != '\t': c = ' ' prefix = prefix + c if start == end: prefix = prefix + '\\' else: prefix = prefix + '^'*(end-start) print prefix