sed command issue with string replacement - string

Question

I'm having a weird problem with the sed command.
I have a script that take a c file, copy it X times and then replace the name of the functions inside it by adding number to the name.
For example:
originalFile.c contains these functions check0, check1 check2
The script will generate those file:
originalFile1.c: check0 check1 check2
originalFile2.c: check3 check4 check5
originalFile3.c: check6 check7 check8
... and so on.
Now the problem... If I generate enough files so the number goes up to 10,20 or more I noticed something in the name of the function. The first function of the file is renamed incorrectly but the other are corrects. For example:
originalFileX.c: __check165__ check16 check17
...
originalFileZ.c: __check297__ __check298__ check29 -> in this file 2 names are incorrects.
Also, If I print the name with echo everything is correct. Do you have any idea what could be wrong?
Here is my script (I run it under OSX):
#!/bin/bash
NUMCHECK=3
# $1: filename
# $2: number of function in the file
# $3: number of function I want to generate
# $4: function basename
function replace_name() {
FILE_NUM=$((($3+($2-1))/$2))
TMP=0
for (( i=1; i<$FILE_NUM+1; i++ ))
do
cp $1.mm test/$1$i.mm
for (( j=0; j<$2; j++ ))
do
OLDNAME="$4$j"
NEWNAME="$4$TMP"
echo $OLDNAME:$NEWNAME
sed -i "" "s/$OLDNAME/$NEWNAME/g" test/$1$i.mm
TMP=$(($TMP+1))
done
done
}
replace_name check $NUMCHECK 60 check

Answer 1

Youre doing 3 runs of the sed in each file. Just imagine the following
sed -i s/check0/check150/g test/check51.mm
sed -i s/check1/check151/g test/check51.mm
sed -i s/check2/check152/g test/check51.mm
The
s/check0/check150/g changes the check0 to check150 - ok
s/check1/check151/g will change the previous check150 to check15150 (because it finds the check1 string in the check150 too, from the previous step).
etc...
You need more precisely define your regex. because here isn't any example input, can't help more.