China DOS Union

Operating environment: Win XP CMD (ver 5.1.2600). Due to work needs, I now need to read a local log file in a batch file and convert the log into a VBS display. (The content stored in the log is only a text file, and there are no VBS statements.)

So I must add "(MSGbox ") at the front of the log and (") at the back, then change it to a script with the.vbs suffix and execute it.

The problem is that there are some small problems when operating with the following code in the batch file:

copy xxx.log 2.txt
echo MSGbox ">1.txt
echo ",64,"日志明细">3.txt
copy 1.txt+2.txt+3.txt 4.vbs
start 4.vbs

After execution, there will be an extra carriage return after MSGbox " in the generated vbs file. You know that carriage returns are not allowed in.vbs. Please ask the experts in the forum for guidance.

I found that when using echo MSGbox ">1.txt, an extra blank line will be added at the end of 1.txt. I think the problem is here. Can I delete the carriage return in the echo input?

[ Last edited by voiL on 2005-12-5 at 09:48 ]

Using ECHO will automatically add carriage returns and line feeds. To remove them, you can use DEBUG:

Method:
For example, generate 1.txt:

echo abc>1.txt

rem Write the DEBUG script script: (remove carriage returns and line feeds, actually just remove the last two bytes 0D, 0A)
echo n 1.txt > script
echo l >>script
echo rcx >>script
echo 3 >>script
echo w >>script
echo q >>script

rem Run DEBUG:
debug < script

But you need to calculate the bytes well. If there are multiple lines, it will be more troublesome.

[ Last edited by GOTOmsdos on 2005-12-5 at 13:37 ]

Thanks to brother GOTOmsdos, I have tried your method. When it exceeds 3 bytes, it will only delete the following ones.

It is not very easy to control when modifying.

Because my log file is also written in with echo, so the size will keep increasing.

[ Last edited by voiL on 2005-12-5 at 17:41 ]

It seems that it still needs to be solved by writing a program.. Just write a simple C console program.. Then a batch script, put it in the task scheduler..

Re voiL:

Consider using the inline assembly in Debug to subtract 2 from the cx value. If the log file exceeds 64K, you need to take both bx and cx values into account. Of course, this method is still relatively clumsy. You can consider using a string replacement tool to replace 0d 0a in the log file with empty, or use other VBS functions that can handle text with carriage returns.

If you can use a third - party tool, it's very simple.

The following is the solution using SED:

sed -e "1s/^/MSGbox\"/" -e "$s/$/\",64,\"Log Details\"/" xxx.log>4.vbs