Created
August 29, 2012 15:06
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grep
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#!/usr/bin/env python | |
# ecoding: utf-8 | |
import sys | |
ENCONTRADO = 0 | |
NAO_ENCONTRADO = 1 | |
ERRO = 2 | |
def colore_linha(linha, palavra): | |
colorida = "\033[1;31m%s\033[0;0m" % palavra | |
return linha.replace(palavra, colorida) | |
def busca_arquivo(busca, arquivo): | |
a = open(arquivo) | |
n_linha = 1 | |
for linha in a: | |
if busca in linha: | |
yield (n_linha, "%s" % colore_linha(linha.strip(), busca)) | |
n_linha += 1 | |
a.close() | |
def main(args): | |
retorno = NAO_ENCONTRADO | |
try: | |
busca = args[1] | |
except IndexError: | |
print >>sys.stderr, "Uso: grep [OPÇÃO]... PADRÃO [ARQUIVO]..." | |
return ERRO | |
arquivos = args[2:] | |
try: | |
for arquivo in arquivos: | |
for r in busca_arquivo(busca, arquivo): | |
print "\033[0;32m%s\033[1;33m: \033[1;33m[\033[0;32m%s\033[1;33m]\033[0;0m %s" % (arquivo, r[0], r[1]) | |
retorno = ENCONTRADO | |
except IOError, ex: | |
print >>sys.stderr, "grep.py: %s: %s" % (ex.filename, ex.strerror) | |
retorno = ERRO | |
return retorno | |
args = sys.argv | |
ret = main(args) | |
sys.exit(ret) |
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