Re^3: Remove CR from file on Windows

I tested (in a DOS window on WindowsXP, striaght -- no cygwin) all of what i posted .. I don't understand -- why doesn't it work??

C:\foo>type foo.bat
@echo OFF

echo "making test file"
perl -e "print \"foo\r\nbar\r\nstuff\";" > f.txt
echo "showing test file"
perl -pe "s/(\s)/'['.ord($1).']'/esg" f.txt

echo "altering file"
perl -i.bak -pe "s/\r(?=\n)//" f.txt
echo "showing result"
perl -pe "s/(\s)/'['.ord($1).']'/esg" f.txt

C:\foo>foo.bat
"making test file"
"showing test file"
foo[13][10]bar[13][10]stuff
"altering file"
"showing result"
foo[10]bar[10]stuff
C:\foo>
[download]

Comment on Re^3: Remove CR from file on Windows Download Code

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Re^4: Remove CR from file on Windows by ikegami (Patriarch) on Feb 10, 2007 at 18:44 UTC
You think your solution works because your script to create the test file and your script to dump the test file suffers from the same bug as your solution. Your demonstration only shows that you can convert CRCRLF to CRLF. The first f.txt contains `foo\r\r\nbar\r\r\nstuff`. `>perl -e "print \"foo\r\nbar\r\nstuff\";" > f.txt >debug f.txt -rcx CX 0011 : -d100 l11 0AF7:0100 66 6F 6F 0D 0D 0A 62 61-72 0D 0D 0A 73 74 75 66 foo...bar +...stuf 0AF7:0110 66 f -q` [download] You alter it to `foo\r\nbar\r\nstuff`. `>perl -i.bak -pe "s/\r(?=\n)//" f.txt >debug f.txt -rcx CX 000F : -d100 lf 0AF7:0100 66 6F 6F 0D 0A 62 61 72-0D 0A 73 74 75 66 66 foo..bar. +.stuff -q` [download] why doesn't it work?? Unless you use binmode on your input file, CRLF gets converted to LF on read. Unless you use binmode on your output file, LF gets converted to CRLF on write.	[reply] [d/l] [select]

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Re^4: Remove CR from file on Windows
by ikegami (Patriarch) on Feb 10, 2007 at 18:44 UTC

You think your solution works because your script to create the test file and your script to dump the test file suffers from the same bug as your solution. Your demonstration only shows that you can convert CRCRLF to CRLF.

The first f.txt contains foo\r\r\nbar\r\r\nstuff.

>perl -e "print \"foo\r\nbar\r\nstuff\";" > f.txt

>debug f.txt
-rcx
CX 0011
:
-d100 l11
0AF7:0100  66 6F 6F 0D 0D 0A 62 61-72 0D 0D 0A 73 74 75 66   foo...bar
+...stuf
0AF7:0110  66                                                f
-q
[download]

You alter it to foo\r\nbar\r\nstuff.

>perl -i.bak -pe "s/\r(?=\n)//" f.txt

>debug f.txt
-rcx
CX 000F
:
-d100 lf
0AF7:0100  66 6F 6F 0D 0A 62 61 72-0D 0A 73 74 75 66 66      foo..bar.
+.stuff
-q
[download]

why doesn't it work??

Unless you use binmode on your input file, CRLF gets converted to LF on read.
Unless you use binmode on your output file, LF gets converted to CRLF on write.

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