How to Substitute Specific Keywords in a particular line

joyds219 · 03-24-2008, 03:54 AM

I am trying to make a customized build. The case is that in the ACTUAL file the line no. 25 has all key word names(shown in bold) and that is to be replaced with only SPECIFIC key words from a db file named name.db file with remaining contents unchanged and the desired output can be seen in the OUTPUT file wherein the line no. 25 now contains key words of only those names present in .db file. Please refer to Case Example Below
Note: I would like to use mostly the SED command for that purpose.
Eg.
name.db contains key words

Code:

EXA
TOR
EDG
PLAT
CLUT
FIT
SHER
CUT
OPTI
REM

ACTUAL File

25PreprocessorDefinitions="NDEBUG;NEST_WIN;EXA;TOR;malloc=nest_malloc;free=nest_free;EDG;PLAT;CLUT;FIT;SHER;CUT;OPTIMI;WIN32;_WINDOWS;MSVC;NO_SENTINEL_LOCK;LEAT;SPD;OPTI;REM;FORE;DOTNET;SNP"

Expected OUTPUT File

PreprocessorDefinitions="NEST_WIN;EXA;TOR;malloc=nest_malloc;free=nest_free;EDG;PLAT;CLUT;FIT;SHER;CUT;OPTI;WIN32;_WINDOWS;MSVC;NO_SENTINEL_LOCK;REM;DOTNET"

Is there a solution for this?

Tinkster · 03-24-2008, 11:27 PM

Sorry, I don't follow. I still see heaps of stuff in both line's 25 that
isn't part of your name.db file? Either your sample data or your explanation
of what you're trying to achieve are lacking.

Cheers,
Tink

P.S.: I took the liberty to slap code-tags into your post - it was
initially so wide that it was too hard to read to be fun ;}

joyds219 · 04-04-2008, 10:39 AM

ok I shall simplify it further.

PreprocessorDefinitions="NDEBUG;NEST_WIN;malloc=nest_malloc;free=nest_free;WIN32;_WINDOWS;MSVC;NO_SE NTINEL_LOCK;EXA;TOR;LEAT;SPD;OPTI;REM;FORE;DOTNET;SNP;EDG;PLAT;CLUT;FIT;SHER;CUT;OPTIMI"

replace the part in bold with the contents from other file name.db as shown above using sed or grep

the output should be as below

PreprocessorDefinitions="NDEBUG;NEST_WIN;malloc=nest_malloc;free=nest_free;WIN32;_WINDOWS;MSVC;NO_SE NTINEL_LOCK;EXA;TOR;EDG;PLAT;CLUT;FIT;SHER;CUT;OPTI:REM"

prad77 · 04-04-2008, 02:00 PM

I used cut command and concatenate with namedb.

newdef1=`echo $PreprocessorDefinitions | cut -d 'EXA' -f1 `

So your unwanted extensions are out. Now....

namedbvar=`cat namedb`
newdef2=${newdef1}${namedbvar}

Dont forget to complie and adjust it further to ur needs.

Gentoo

beadyallen · 04-04-2008, 03:33 PM

I'm assuming the ordering of the definitions isn't important. If that's the case, I'd have two files, one containing ALL definitions possibly needing replacing, and then have another file with the ones you want. Strip out everything, than append the ones you want:

Code:

ALLDEFS=`cat all_possible_defs.db`
NEWDEFS=`cat names.db`
for x in $ALLDEFS
do
   PreprocessorDefinitions=`echo "$PreprocessorDefinitions" \
   | sed "s/$x\;//"`
done

for x in  $NEWDEFS
do
   PreprocessorDefinitions="$PreprocessorDefinitions$x\;"
done

This way you don't have to worry about 'cutting' things out you might be unable to replace. Not sure if it's what you want though.