How to preserve line endings in strings with YAML?

[Tom Payne]

Hi all,

Normally I would expect that
YAML.load(x.to_yaml) == x
for all sensible values of x.

However, this does not seem to be the case if the string contains
certain new line characters, for example:
YAML.load("abc\r\n".to_yaml) # => "abc\n" ("\r" lost)
YAML.load("\r\n".to_yaml) # => "" ("\r\n" lost)
YAML.load("\n".to_yaml) # => "" ("\n" lost)

My question is: how can I configure YAML to preserve my line endings?
I'm using Ruby 1.8.4-preview2 and have Googled for a solution without
success. Note that the :UseBlock option to to_yaml does not help.

The reason that I need this functionality is that I would like to store
a string which includes a digital signature in a YAML document. Any
corruption of the line endings changes the string and consequently
invalidates the digital signature.

Thanks very much,

 

[Bill Kelly]

YAML.load("abc\r\n".to_yaml) # => "abc\n" ("\r" lost)
YAML.load("\r\n".to_yaml) # => "" ("\r\n" lost)
YAML.load("\n".to_yaml) # => "" ("\n" lost)

My question is: how can I configure YAML to preserve my line endings?
I'm using Ruby 1.8.4-preview2 and have Googled for a solution without
success. Note that the :UseBlock option to to_yaml does not help.

=> "\r\n"

But the third didn't:
=> " "

I guess if all else fails you could:
=> "\n"


Regards,

Bill

 

[Tom Payne]

Sorry to bump, but the timing of my initial posting (early hours of
Sunday morning European time, late Saturday US time, Sunday Japanese
time) was probably unwise.

Hi all,

Normally I would expect that
YAML.load(x.to_yaml) == x
for all sensible values of x.

However, this does not seem to be the case if the string contains
certain new line characters, for example:
YAML.load("abc\r\n".to_yaml) # => "abc\n" ("\r" lost)
YAML.load("\r\n".to_yaml) # => "" ("\r\n" lost)
YAML.load("\n".to_yaml) # => "" ("\n" lost)

My question is: how can I configure YAML to preserve my line endings?
I'm using Ruby 1.8.4-preview2 and have Googled for a solution without
success. Note that the :UseBlock option to to_yaml does not help.

The reason that I need this functionality is that I would like to store
a string which includes a digital signature in a YAML document. Any
corruption of the line endings changes the string and consequently
invalidates the digital signature.

Thanks very much,

No more bumps (promise!)

Cheers,

 

[Johannes Friestad]

That's part of the YAML specification.
To keep newlines, use the pipe syntax, like this:
---
signature: |
ax890a
b0098b

=3D> { 'signature' =3D> "ax890a\nb0098b\n" }
---
There are several other newline-keeping options..
Suggested reading:
http://yaml4r.sourceforge.net/cookbook/
Look under 'blocks'

cheers,
jf