From: Jim Freeze <jim@...>
Date: 2003-04-27T13:18:31+09:00
Subject: Re: File reading and line continuation with '\'

On Sunday, 27 April 2003 at 10:11:06 +0900, John Johnson wrote:
> This should do it:
> 
> File.open(in_filename, "r") { |inFile|
>   inFile.each_line ("\\") { |line|
> 	# whatever
>   }
> }
> 

Hmm... I don't get it.

irb(main):009:0> File.open("a") { |f|
irb(main):010:1* f.each_line("\\") { |line| p line }}
"one \\"
"\ntwo \\"
"\nthree\nfour\n"
=> #<File:0x1de408>

> cat a
one \
two \
three
four

I was thinking I would get:

"one two three\n"
"three\n"
"four"

ri says:
----------------------------------------------------------- IO#each_line
  ios.each_line( aSepString=$/ ) {| line | block }  -> ios
------------------------------------------------------------------------
  Synonym for IO#each.

What I need to match on as a sep string is /[^\\]\n$/.
I don't see how "\\" can work, but, it is after midnight
my time.

Jim



> Regards,
>   JJ
> 
> On Sat, 2003-04-26 at 20:39, Jim Freeze wrote:
> > Hi:
> > 
> > Is there an simple way to get ruby to read lines in a file
> > ending with a backslash, '\', as a single line?
> > 
> > > cat a
> > one\
> > two
> > irb(main):001:0> a=File.read("a")
> > => "one\\\ntwo\n"
> > irb(main):002:0> b=File.readlines("a")
> > => ["one\\\n", "two\n"]
> > 
> > I would like instead:
> >  
> >  f=File.readlines("a")
> >  ["onetwo\n"]
> > 
> > Thanks
> > 
> > -- 
> > Jim Freeze
> > ----------
> > Positive, adj.:
> > 	Mistaken at the top of one's voice.
> > 		-- Ambrose Bierce, "The Devil's Dictionary"
> > 
> 
> 
> 

-- 
Jim Freeze
----------
Acquaintance, n.:
	A person whom we know well enough to borrow from, but not well
enough to lend to.
		-- Ambrose Bierce, "The Devil's Dictionary"