rpm query is slow, cache it

[packages/rpm-build-tools.git] / shrc.sh

diff --git a/shrc.sh b/shrc.sh
index d4831ca4744d7343b1bfce1fbc8fe12fb5c0846d..e9ea716b8cf4c2cc78974a6e4436c916ebecc465 100755 (executable)
--- a/shrc.sh
+++ b/shrc.sh
@@ -196,29 +196,6 @@ fi # no $dist set
 alias adif="dif -x '*.m4' -x ltmain.sh -x install-sh -x depcomp -x 'Makefile.in' -x compile -x 'config.*' -x configure -x missing -x mkinstalldirs -x autom4te.cache"
 alias pclean="sed -i~ -e '/^\(?\|=\+$\|unchanged:\|diff\|only\|Only\|Tylko\|Files\|Common\|Index:\|RCS file\|retrieving\)/d'"
 
-# makes diff from kde svn path
-# requires: wget, tee
-kdediff() {
-       local url="$1" r1 r2
-       # --- branches/KDE/3.5/kdepim/kpilot/conduits/vcalconduit/vcalRecord.cc #624744:624745
-       url=${url#*--- }
-       echo >&2 "Process $url"
-       r1=${url#*#}
-       r2=${r1#*:}
-       r1=${r1%:*}
-
-       #  http://websvn.kde.org/branches/KDE/3.5/kdepim/kpilot/conduits/vcalconduit/vcalRecord.cc?rev=624745&r1=612579&r2=624745&makepatch=1&diff_format=u
-       #  http://websvn.kde.org/branches/KDE/3.5/kdenetwork/kopete/protocols/oscar/aim/aimcontact.cpp?r1=609808&r2=673027&view=patch
-       url=http://websvn.kde.org/${url% *}
-       url="$url?r1=$r1&r2=$r2&view=patch"
-
-       if [ -t 1 ]; then
-               wget "$url" -O -| tee m.patch | diffcol
-       else
-               wget "$url" -O -
-       fi
-}
-
 # merges two patches
 # requires: patchutils
 pmerge() {
@@ -286,14 +263,119 @@ rpm2spec() {
        sed -re 's,^(.+)-[^-]+-[^-]+$,\1.spec,'
 }
 
-rpmb() {
-       local SPEC SPECDIR arg
-       for arg in "$@"; do
-               case "$arg" in
-                       *.spec) SPEC="$arg"
-                               ;;
-               esac
-       done
-       SPECDIR=$(dirname "$(pwd)/${SPEC:-.}")
-       command rpmbuild --define "_specdir $SPECDIR" --define "_sourcedir $SPECDIR" "$@"
+
+#
+# A colorized bash prompt
+# - shows curret branch
+# - shows if branch is up to date/ahead/behind
+# - shows if last command exited with error (red)
+#
+# To use it, set $PROMPT_COMMAND env var:
+# PROMPT_COMMAND=__bash_prompt_command
+#
+__bash_prompt_command() {
+       local previous_return_value=$?
+
+       local RED="\[\033[0;31m\]"
+       local YELLOW="\[\033[0;33m\]"
+       local GREEN="\[\033[0;32m\]"
+       local BLUE="\[\033[0;34m\]"
+       local LIGHT_RED="\[\033[1;31m\]"
+       local LIGHT_GREEN="\[\033[1;32m\]"
+       local WHITE="\[\033[1;37m\]"
+       local LIGHT_GRAY="\[\033[0;37m\]"
+       local COLOR_NONE="\[\e[0m\]"
+
+       # if we are in rpm subdir and have exactly one .spec in the dir, include package version
+       __package_update_rpmversion
+       local rpmver=$(__package_rpmversion)
+
+       local prompt="${BLUE}[${RED}\w${GREEN}${rpmver:+($rpmver)}$(__bash_parse_git_branch)${BLUE}]${COLOR_NONE} "
+       if [ $previous_return_value -eq 0 ]; then
+               PS1="${prompt}➔ "
+       else
+               PS1="${prompt}${RED}➔${COLOR_NONE} "
+       fi
+}
+
+# helper for __bash_prompt_command
+# command line (git) coloring
+# note we use "\" here to avoid any "git" previous alias/func
+__bash_parse_git_branch() {
+       # not in git dir. return early
+       \git rev-parse --git-dir &> /dev/null || return
+
+       local git_status branch_pattern remote_pattern diverge_pattern
+       local state remote branch
+
+       git_status=$(\git -c color.ui=no status 2> /dev/null)
+       branch_pattern="^On branch ([^${IFS}]*)"
+       remote_pattern="Your branch is (behind|ahead) "
+       diverge_pattern="Your branch and (.*) have diverged"
+
+       if [[ ! ${git_status} =~ "working directory clean" ]]; then
+               state="${RED}⚡"
+       fi
+
+       # add an else if or two here if you want to get more specific
+       if [[ ${git_status} =~ ${remote_pattern} ]]; then
+               if [[ ${BASH_REMATCH[1]} == "ahead" ]]; then
+                       remote="${YELLOW}↑"
+               else
+                       remote="${YELLOW}↓"
+               fi
+       fi
+
+       if [[ ${git_status} =~ ${diverge_pattern} ]]; then
+               remote="${YELLOW}↕"
+       fi
+
+       if [[ ${git_status} =~ ${branch_pattern} ]]; then
+               branch=${BASH_REMATCH[1]}
+               echo " (${branch})${remote}${state}"
+       fi
+}
+
+# cache requires bash 4.x
+declare -A __package_update_rpmversion_cache
+__package_update_rpmversion() {
+       # extract vars from cache
+       set -- ${__package_update_rpmversion_cache[$PWD]}
+       local specfile=$1 version=$2 mtime=$3
+
+       # invalidate cache
+       if [ -f "$specfile" ]; then
+               local stat
+               stat=$(stat -c %Y $specfile)
+               if [ $mtime ] && [ $stat -gt $mtime ]; then
+                       unset version
+               fi
+               mtime=$stat
+       else
+               # reset cache, .spec may be renamed
+               unset version specfile
+       fi
+
+       # we have cached version
+       test -n "$version" && return
+
+       # needs to be one file
+       specfile=${specfile:-$(\ls *.spec 2>/dev/null)}
+       if [ ! -f "$specfile" ]; then
+               unset __package_update_rpmversion_cache[$PWD]
+               return
+       fi
+
+       mtime=${mtime:-$(stat -c %Y $specfile)}
+
+       # give only first version (ignore subpackages)
+       version=$(rpm --define "_specdir $PWD" --specfile $specfile -q --qf '%{VERSION}\n' | head -n1)
+       __package_update_rpmversion_cache[$PWD]="$specfile $version $mtime"
+}
+
+__package_rpmversion() {
+       # extract vars from cache
+       set -- ${__package_update_rpmversion_cache[$PWD]}
+       # print version
+       echo $2
 }