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#File: /cfg/fedora_yum_edit_source_for_command.sh
#########
#!/bin/sh
apppath="${1}"
#Goal: a command that gets you to the source code for any binary on a fedora system.
#example: /cfg/fedora_yum_edit_source_for_command.sh /bin/hostname
# broken example:
# /cfg/fedora_yum_edit_source_for_command.sh usr/libexec/postfix/smtp
# (broken due to the "2:" (a epoch) appended to the package name by "yum whatprovedes")
# another broken example:
# /cfg/fedora_yum_edit_source_for_command.sh /bin/rvi
# working example: /bin/hostname
# /cfg/fedora_yum_edit_source_for_command.sh /bin/hostname
ls -alh "${apppath}"
test -e "${apppath}" || exit 1
#expect is necessary because of a few corner cases where
#the package description is longer than 80 col's and yum
#detects you are piping it's output and wraps to 80 lines...
#making it hard to match a line because there is a extra newline
package=$(expect -c "spawn yum whatprovides ${1} ; expect" | awk -v x='Repo :' '$0 ~ x { print ll } { ll = $0}' | head -n 1 | cut -d ':' -f 1 | cut -d ' ' -f 1)
echo "package=${package}"
test -n "${package}" || exit 1
echo "making first folder"
mkdir "${package}" && cd "${package}" || exit 1
yumdownloader --source "${package}" || exit 1
rpmname=`ls *.src.rpm`
test -n "${rpmname}" || exit 1
echo "making second folder"
mkdir "${rpmname}_dir" || exit 1
cd "${rpmname}_dir" || exit 1
rpm2cpio ../*.src.rpm | cpio -idmv
ls --color -alh .
# TODO:
# example:
# /cfg/fedora_yum_edit_source_for_command.sh /bin/readlink
#
# after getting the rpm decompressed, we still
# need to decompress (for example coreutils-8.12.tar.xz)
# and open readlink.c