regexp working with mixed lines endings

[Une bévue]

Hey all,

i've an audio file (wav) containing some xml metadatas at start or
ending of the ausio datas.

my regexp works fine with unix lines endings.

however some recorder puts mixed line ending where my regexp isn't
working.

is their a special option able to work with all kind of endings ?

my regexps :

rgxstart=Regexp.new("<BWFXML>")
rgxstop=Regexp.new("</BWFXML>")


the comparaison i do :

rgxstart === l.chomp

l being :

File.open(<the sound file>).each { |l| ...}

 

[Une bévue]

Sure. For mixed Windows and Unix/Linux line endings, just delete the
carriage returns:

data.gsub!{/\r/,"")

Try this instead:

data = File.read(filename)

data.gsub!(/\r/,"")

array = []

data.split("\n").each do |line|
# process lines here
array << line
end

By using this approach, all your XML lines will be made uniform. At the end
of the processing, you will need to reintegrate the lines into a block for
storage:

data = array.join("\n")

file.open(filename,"w") { |f| f.write data }

OK fine thanks very much it's a nice solution somehow "normalizing" win*
line endings ;-)


In fact i've a little bit modified what u've wroten :
data.gsub!(/\r\n/,"\n")
data.gsub!(/\r/,"\n")

because i've discovered in the mean time i could have :
\r
\n
\r\n

lines endings )))

does \n\r exists ? (wikipedia says NO)

also because the most part of the audio input file is "binary" datas
there line ending is out of meaning, i suppose.

anyway, thanks a lot i'm now "armed" to face any situation ;-)

right now with the two first examples files i get doing my wav2xml and
reading the xml file gave me syntax colored results (within two
different text editors), then i think it is a proof the prob is cured !

 

[Une bévue]

Okay, the first ("\r") might be old-style Macintosh line endings. Here is a
solution for all the possibilities:

data.gsub!(%r{(\r\n|\n\r|\r)},"\n")


Doesn't matter. Someone might type it in manually. If it exists, the above
method will handle it.

OK, thanks, i'll try that asap.

What? You are reading binary files? Then don't try to filter line endings.

BUT I DON'T have the choice the audio files i get does have metadatas
writen in xml mixed with binary audio datas. The line endings are
"correct" within the xml. I have to face with the output given by
various recorders.

i've uploaded in <http://thoraval.yvon.free.fr/Audio>

a *** truncated *** version of one of the file i'm getting the xml part,
this file is named "bidule-truncated.wav" don't play it as an audio file
because i've writen :

[audio part truncated]

in the middle of the audio part to make it lighter (4k instead of MBs).

anyway thanks a lot helping me for that line endings ;-)

If the file is text, you can filter line endings. Use the above method.

If the file is not text, do not filter anything.

then don't work...