Shell Programming and Scripting

./update.sh 1.8.8.8 "some text for a change log header" /some.plist

pVersion="$1"
pRevision=$(echo "$1" | awk -F. '{print $4}')
vHeader=$(echo $pVersion | sed -e 's/\.//g' -e 's/^/v/')
pChangeLog=$2

export PVERSION=$pVersion
export PREVISION=$pRevision
export PLISTPATH="$3"

python - <<END
import os
import plistlib

pVersion=os.environ['PVERSION']
pRevision=os.environ['PREVISION']
plistPath=os.environ['PLISTPATH']

Plist=plistlib.readPlist(plistPath)

Plist['ProductVersion'] = pVersion
Plist['Revision'] = pRevision


plistlib.writePlist(Plist, plistPath)

END

perl -spi -e "s/version=\"*.*.*.*\"/version=\"$pVersion\"/g" somescript.sh

perl -spi -e "s/change\ log/change\ log\n#\t$pVersion\n#\t-$pChangeLog/g"

#!/bin/bash

pVersion="$1"
pChangeLog="$2"


perl -spi -e "s/version=\"*.*.*.*\"/version=\"$pVersion\"/g" somescript.sh

if [ ${#pChangeLog} -gt 71 ] # 80 - 8 spaces from tab - 1 hypen
then    # wrapping necessary

MLINE=$(
    # first line
    line="${pChangeLog:0:71}"
    printf "#\t-%s\n" "$line"
    pChangeLog="${pChangeLog:71}"

    # all the rest
    while [ ${#pChangeLog} -gt 0 ];
    do
        line="${pChangeLog:0:64}" # 80 - 16 spaces from two tabs
        printf "#\t\t%s\n" "$line"
        pChangeLog="${pChangeLog:64}"
    done
)

    perl -spi -e "s/change\ log/change\ log\n#\t$pVersion\n$MLINE/g" somescript.sh

else    # fits in one line

    perl -spi -e "s/change\ log/change\ log\n#\t$pVersion\n#\t-$pChangeLog/g" somescript.sh

fi

$ cat somescript.sh
#!/bin/coolcli

# version="w.x.y.z"
# change log

# <------ program code below this line  ------>
$
$ ./update.sh 0.0.0.1 "first version"
$ ./update.sh 0.0.0.2 "added function x"
$ ./update.sh 0.0.1.0 "some text"
$ ./update.sh 0.0.1.1 "some more text"
$ ./update.sh 0.1.0.0 "A changelog is a log or record of changes made to a proje
ct, such as a website or software project, usually including such records as bug
 fixes, new features, etc. Source: wikipedia"
$ 
$ cat somescript.sh
#!/bin/coolcli

# version="0.1.0.0"
# change log
#       0.1.0.0
#       -A changelog is a log or record of changes made to a project, such as a 
#               website or software project, usually including such records as b
#               ug fixes, new features, etc. Source: wikipedia
#       0.0.1.1
#       -some more text
#       0.0.1.0
#       -some text
#       0.0.0.2
#       -added function x
#       0.0.0.1
#       -first version

# <------ program code below this line  ------>
$