[R] regular expression

[Laurent Rhelp]

Gabor Grothendieck a écrit :

>On 4/7/07, Laurent Rhelp <laurentRhelp at free.fr> wrote:
>  
>
>>Gabor Grothendieck a écrit :
>>
>>    
>>
>>>I assume is to replace single quotes in double quoted strings with single quoted
>>>strings containing double quotes in place of the single quotes
>>>
>>>      
>>>
>>that's rignt
>>
>>    
>>
>>>while leaving
>>>double quoted strings not containing single quotes as they are (i.e. leave them
>>>as double quoted).
>>>
>>>      
>>>
>>No, at the end,  I have to replace all the double quotes (") by simple
>>quote (')
>>    
>>
>
>In that case it simplifies to the following (same as before except
>for definition of f):
>
>library(gsubfn)
>
>squote <- "'" # single quote. This is a double quote, single quote, double quote
>dquote <- '"' # double quote  This is a single quote, double quote, single quote
>
>s <- "[\"...\" \"...'...\"]"
>f <- function(x)  chartr(paste(squote, dquote), paste(dquote, squote), x)
>gsubfn('["][^"]*["]', f, s)  #   "['...' '...\"...']"
>
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>
>
>  
>
I have the following error message :

 > gsubfn('["][^"]*["]', f, s)  #   "['...' '...\"...']"
Erreur dans parse(file, n, text, prompt) : erreur de syntaxe dans 
"c("[\",replacement(""...\"""