Windows Batch Script parsing multiline file with variable line formats? - windows

Question

I need to parse a file that has the following format:
A + tags/RWSTestConsole_tag1/
(from trunk/RWSTestConsole/:r776)
So I'm using a FOR /F loop with a counter and inspecting the tokens based on whether I'm looking at line 1 or line 2. Everything works fine except the first token for line 2 includes the leading spaces (" from") and a) I thought the delims on my FOR would take care of spaces and b) theoretically I could just compare to a constant string that is set to " from" but that's kind of hokey.
This is my FOR command:
for /F "tokens=1,2,3,4,5 delims=():/ " %%a in (svn.txt) DO (
Is there a change I can make to the FOR command to ignore the spaces? If not is there a way to trim the token inside the FOR loop's DO clause so I only get the word without the leading spaces?
Edit:
This is output from a Subversion SVNLOOK command in a script that is managing whether or not to allow a "tag" to be created. The output can be 1 line that must be formatted as:
D /tags/tagfoldername/
If it's one line but it's not a delete for the actual tag folder then it's an error. This case is handled.
If it's more than 2 lines it's a list of files and that's an error. I have that handled.
The case I'm having problems with is if it is 2 lines it needs to be in the format shown above:
A + tags/RWSTestConsole_tag1/
(from trunk/RWSTestConsole/:r776)
Where col 1 = "A". col 3 = "+", col 5 = "tags" and the remainder of line one is the tag folder name. The second line is the source of the create request so it has to start with "from", followed by "trunk", "branches" or "tags" followed by a single-level folder name and a revision number.
I used the FOR command as described above. In the DO clause I look at a counter to tell if I'm parsing line 1 or line 2. Line 1 is simple, I have all the logic to handle it.
Line 2 is parsed by the same FOR command and the first token (%%a) removes the "{" from delims, but leaves behind all the leading blanks so I get back %%a=" from".
I need to know if there's a way I can modify the FOR command to remove the blanks or a way to trim %%a within the FOR DO clause to remove the blanks.
Edit 2: FOR Loop Code
set c=1
for /F "tokens=1,2,3,4,5 delims=():/ " %%a in (svn.txt) DO (
echo op=%%a, %%b, %%c, %%d, %%e
if !c!==1 (
set rc1=0
if /I %%a EQU A (
if "%%b" EQU "+" (
if [%%e] EQU [] (
echo Tag from a Copy Op
set rc1=0
) else (
echo Found a subfolder: %%e - not a tag delete
set rc1=1
)
) else (
echo Tag not a Copy
set rc1=1
)
)
)
if !c!==2 (
set rc2=0
set str1=%%a
echo String replace 1 = !str!
set str2=!str1:~-4!
echo String Replace 2 *!str2!*
if /I !str2! EQU FROM (
set isvalid=false
if %%b EQU trunk set isvalid=true
if %%b EQU branches set isvalid=true
if %%b EQU tags set isvalid=true
if !isvalid! EQU true (
set rc2=0
) else (
set rc2=1
echo Invalid source for Tag Creation
)
) else (
set rc2=1
echo Tag not FROM
)
)
set /a c+=1
)
echo RC1=!rc1!
echo RC2=!rc2!
set /a rc=!rc1!+!rc2!
echo final RC = !rc!