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Dean Rasheed wrote:
...
> So the current code in escape_yaml() is inadequate for producing valid
> YAML. I think it would have to also consider at least the following
> characters as special "-" ":" "[" "]" "{" "}" "," "\"" "'"
> "|" "*" "&". Technically, it would also need to trap empty strings,
> and strings with leading or trailing whitespace.
>
> Making escape_yaml() completely bulletproof with this approach would
> be quite difficult, and (IMO) not worth the effort
...
Doesn't seem like a lot of effort to me. You've already laid out most of
the exceptions above, although they require a few tweaks.
The rules should be:
Requires quoting only if the first character:
& * ! | > ' " % @ ` #
Same as above, but no quoting if the second character is "safe":
- ? :
Always requires quoting:
":<space>" "<space>#" aka ': ' ' #'
Always requires quoting:
, [ ] { }
Always require quoting:
(leading space) (trailing space) (empty string)
See:
http://yaml.org/spec/1.2/spec.html section 5.3 and 7.3.3
- --
Greg Sabino Mullane g...@turnstep.com
End Point Corporation http://www.endpoint.com/
PGP Key: 0x14964AC8 201006070943
http://biglumber.com/x/web?pk=2529DF6AB8F79407E94445B4BC9B906714964AC8
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