如何在Perl中将小文本文件的内容读入标量? [英] How do I read the contents of a small text file into a scalar in Perl?
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问题描述
我有一个小的文本文件,我想读入一个标量变量,就像它在文件中一样(保留行分隔符和其他空格)。
Python中的等价物就像
buffer =
try:
file = open(fileName,'rU')
try:
buffer + = file.read()
finally:
file.close()
除了IOError:
buffer + =文件无法打开。
这是为了简单地重新显示网页上的文件内容,这就是为什么我的错误信息正在进入我的文件缓冲区。 解决方案
从 Perl Cookbook :
my $ filename ='file 。文本';
打开(FILE,'<',$ filename)或死掉'Could not open file:'。 $ !;
undef $ /;
my $ whole_file =< FILE> ;;
我会将这些更改本地化:
my $ whole_file ='';
{
local $ /;
$ whole_file =< FILE>;
}
I have a small text file that I'd like to read into a scalar variable exactly as it is in the file (preserving line separators and other whitespace).
The equivalent in Python would be something like
buffer = ""
try:
file = open("fileName", 'rU')
try:
buffer += file.read()
finally:
file.close()
except IOError:
buffer += "The file could not be opened."
This is for simply redisplaying the contents of the file on a web page, which is why my error message is going into my file buffer.
解决方案
From the Perl Cookbook:
my $filename = 'file.txt';
open( FILE, '<', $filename ) or die 'Could not open file: ' . $!;
undef $/;
my $whole_file = <FILE>;
I would localize the changes though:
my $whole_file = '';
{
local $/;
$whole_file = <FILE>;
}
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