2012年12月8日土曜日

開発環境

『初めてのPerl 第6版』(Randal L. Schwartz, Tom Phoenix, brian d foy 共著、近藤 嘉雪 訳、オライリー・ジャパン、2012年、ISBN978-4-87311-567-2) の8章(正規表現によるマッチ)、8.10(練習問題)2を解いてみる。

その他参考書籍

2.

コード(TextWrangler)

sample.pl

#!/usr/bin/env perl
use strict;
use warnings;
use utf8;
use 5.016;
binmode STDIN, ':utf8';
binmode STDOUT, ':utf8';

while(<>){
  chomp;
  if(/a\b/){
    print "Matched: |$`|<$&>$'|\n";
  } else {
    print "No match: |$_|\n";
  }
}

入出力結果(Terminal)

$ ./sample.pl test.txt
No match: |A|
Matched: ||<a>|
Matched: ||<kamimura>'s blog|
Matched: |http://|<sitekamimura>.blogspot.com|
No match: |KMI|
Matched: |http://www.|<mkamimura>.com   |
No match: |Fred|
No match: |FRED|
No match: |fred|
No match: |frederick|
No match: |Alfred|
No match: |fred flintstone|
No match: |Mr. Slate     |
No match: |Mississippi|
No match: |Bamm-Bamm    |
Matched: ||<wilama>|
No match: |barney|
Matched: ||<wilma> and fred|
Matched: |fred and |<wilma>|
Matched: ||<Wilma> and Fred      |
Matched: |Fred and |<Wilma>|
Matched: ||<wilma>&fred|
Matched: |Mrs. |<Wilma> Flintstone   |
Matched: |I saw |<Wilma> yesterday|
Matched: |I, |<Wilma>!|
No match: |Z|
Matched: ||<llama>|
$ cat test.txt
A
a
kamimura's blog
http://sitekamimura.blogspot.com
KMI
http://www.mkamimura.com   
Fred
FRED
fred
frederick
Alfred
fred flintstone
Mr. Slate     
Mississippi
Bamm-Bamm    
wilama
barney
wilma and fred
fred and wilma
Wilma and Fred      
Fred and Wilma
wilma&fred
Mrs. Wilma Flintstone   
I saw Wilma yesterday
I, Wilma!
Z
llama
$

ちなみにJavaScriptの場合。

コード(TextWrangler)

var result = "";
var str = "A\na\nkamimura's blog\nhttp://sitekamimura.blogspot.com\nKMI\nhttp://www.mkamimura.com   \nFred\nFRED\nfred\nfrederick\nAlfred\nfred flintstone\nMr. Slate     \nMississippi\nBamm-Bamm    \nwilama\nbarney\nwilma and fred\nfred and wilma\nWilma and Fred      \nFred and Wilma\nwilma&fred\nMrs. Wilma Flintstone   \nI saw Wilma yesterday\nI, Wilma!\nZ\nllama\n";
var lines = str.split("\n");
for(var i = 0; i < lines.length; i++){
  if(/a\b/.test(lines[i])) result += lines[i] + "\n";
}
$('#pre0').text(result);


pythonの場合。

sample.py

コード(TextWrangler)

#!/usr/bin/env python3.3
#-*- coding:utf-8 -*-

import sys, re

for line in open(sys.argv[1]):
    if re.search(r"a\b", line):
        print(line, end="")

入出力結果(Terminal)

$ ./sample.py test.txt
a
kamimura's blog
http://sitekamimura.blogspot.com
http://www.mkamimura.com   
wilama
wilma and fred
fred and wilma
Wilma and Fred      
Fred and Wilma
wilma&fred
Mrs. Wilma Flintstone   
I saw Wilma yesterday
I, Wilma!
llama
$

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