In my spare time, I sometime play at Battle for Wesnoth which is a turn per turn strategy game. In some advanced campaigns you should fight very dangerous ennemies and you MUST not loose any heros. That’s why I use this simple GNU awk script to parse saves and tweak some part of it.
This parser parse each unit parameters which match a specific regular expression. For each value at a specific parameter you store the value in a variable.
The quick and dirty part of the script is that it print modified values
when parsing side="n". Thus all the values have to be in the root of
the unit. It cannot be used to modify unit capacities.
The default save format is the compressed plain-text. Thus you need an extract-transform-and-compress command. The next command parse the Modif-old.gz file, transform it and save it to a Modif.gz file.
zcat Modif-old.gz |gawk -f save.awk |gzip > Modif.gz