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authornoreply@github.com <noreply@github.com>2020-01-28 16:19:26 +0000
committernoreply@github.com <noreply@github.com>2020-01-28 16:19:26 +0000
commite82b03438a2a627f8cb7860d161c32e951e11d60 (patch)
treeb8e51066487207aaffdda9ee5affa694168bc5bb /kiss
parent888d7ba884fc71256350d59b217c70522484f527 (diff)
parent6396c883a3fbb518450a5d9116774253bbc87eca (diff)
downloadcpt-e82b03438a2a627f8cb7860d161c32e951e11d60.tar.gz
Merge pull request #94 from kisslinux/choices
kiss: alternatives system FossilOrigin-Name: 894bb345811d91a46c807867123395b1626a99e1a8f8cc36c5dd1d73061bcf73
Diffstat (limited to 'kiss')
-rwxr-xr-xkiss183
1 files changed, 157 insertions, 26 deletions
diff --git a/kiss b/kiss
index 730e8f7..c309ef4 100755
--- a/kiss
+++ b/kiss
@@ -148,6 +148,14 @@ dosu() {
fi
}
+regex_escape() {
+ # Escape all required characters in both the search and
+ # replace portions of two strings for use in a 'sed' call
+ # as "plain-text".
+ sea=$(echo "$1" | sed 's/[]\/$*.^[]/\\&/g')
+ rep=$(echo "$2" | sed 's/[\/&]/\\&/g')
+}
+
pkg_lint() {
# Check that each mandatory file in the package entry exists.
log "$1" "Checking repository files"
@@ -745,15 +753,14 @@ pkg_conflicts() {
tar xf "$1" -O "./$pkg_db/$2/manifest" | while read -r file; do
case $file in */) continue; esac
- printf '%s\n' "$file"
-
- readlink -f "$KISS_ROOT/$file" ||:
+ printf '%s/%s\n' \
+ "$(readlink -f "$KISS_ROOT/${file%/*}")" "${file##*/}"
done > "$cac_dir/$pid-m"
p_name=$2
# Generate a list of all installed package manifests.
- set +ef
+ set +f
set -f -- "$sys_db"/*/manifest
# Filter the manifest list and remove the previously
@@ -762,21 +769,118 @@ pkg_conflicts() {
i_name=${pkg%/*}
i_name=${i_name##*/}
- shift
+ shift "$(($# ? 1 : 0))"
[ "$p_name" = "$i_name" ] && continue
set -- "$@" "$pkg"
done
+ [ -s "$cac_dir/$pid-m" ] || return 0
+
# Use 'grep' to list matching lines between the to
# be installed package's manifest and the above filtered
# list.
- [ -s "$cac_dir/$pid-m" ] &&
- "$grep" -Fxf "$cac_dir/$pid-m" -- "$@" &&
- die "Package '$p_name' conflicts with another package"
+ if [ "$KISS_CHOICE" ]; then
+ "$grep" -Fxf "$cac_dir/$pid-m" -- "$@" |
+
+ # This is a novel way of offering an "alternatives" system.
+ # It is entirely dynamic and all "choices" are created and
+ # destroyed on the fly.
+ #
+ # When a conflict is found between two packages, the file
+ # is moved to a directory called "choices" and its name
+ # changed to store its parent package and its intended
+ # location.
+ #
+ # The package's manifest is then updated to reflect this
+ # new location.
+ #
+ # The 'kiss choices' command parses this directory and
+ # offers you the CHOICE of *swapping* entries in this
+ # directory for those on the filesystem.
+ #
+ # The choices command does the same thing we do here,
+ # it rewrites manifests and moves files around to make
+ # this work.
+ #
+ # Pretty nifty huh?
+ while IFS=: read -r pro con || [ "$pro" ]; do
+ log "$p_name" "Found conflict ($con), adding choice"
+
+ # Create the "choices" directory inside of the tarball.
+ # This directory will store the conflicting file.
+ mkdir -p "$tar_dir/$p_name/${cho_dir:=var/db/kiss/choices}"
+
+ # Construct the file name of the "db" entry of the
+ # conflicting file. (pkg_name>usr>bin>ls)
+ con_name=$(echo "$con" | sed 's|/|>|g')
+
+ # Move the conflicting file to the choices directory
+ # and name it according to the format above.
+ mv -f "$tar_dir/$p_name/$con" \
+ "$tar_dir/$p_name/$cho_dir/$p_name$con_name"
+
+ regex_escape "$con" "/$cho_dir/$p_name$con_name"
+
+ # Rewrite the package's manifest to update its location
+ # to its new spot (and name) in the choices directory.
+ sed -i "s/$sea/$rep/" \
+ "$tar_dir/$p_name/$pkg_db/$p_name/manifest"
+ done
+ else
+ if "$grep" -Fxf "$cac_dir/$pid-m" -- "$@"; then
+ log "Package '$p_name' conflicts with another package" "" "!>"
+ log "Run 'KISS_CHOICE=1 kiss i $p_name' to add conflicts" "" "!>"
+ die "as alternatives."
+ fi
+ fi
+}
+
+pkg_swap() {
+ # Swap between package alternatives.
+
+ # Check to see if the package is installed. This
+ # will exit with an error if it is not.
+ pkg_list "$1" >/dev/null
+
+ alt=$(printf %s "$1$2" | sed 's|/|>|g')
+ cd "$sys_db/../choices"
+
+ [ -f "$alt" ] || [ -h "$alt" ] ||
+ die "Alternative '$1 $2' doesn't exist"
+
+ if [ -f "$2" ]; then
+ # Figure out which package owns the file we are going to
+ # swap for another package's.
+ #
+ # Print the full path to the manifest file which contains
+ # the match to our search.
+ pkg_owns=$(set +f; "$grep" -lFx "$2" "$sys_db/"*/manifest) ||:
+
+ # Extract the package name from the path above.
+ pkg_owns=${pkg_owns%/*}
+ pkg_owns=${pkg_owns##*/}
+
+ [ "$pkg_owns" ] ||
+ die "File '$2' exists on filesystem but isn't owned"
+
+ log "Swapping '$2' from '$pkg_owns' to '$1'"
+
+ regex_escape "$2" "$PWD/$pkg_owns>${alt#*>}"
- set -e
+ # Convert the current owner to an alternative and rewrite
+ # its manifest file to reflect this.
+ dosu mv -f "'$2'" "'$pkg_owns>${alt#*>}'"
+ dosu sed -i "'s/$sea/$rep/'" "'../installed/$pkg_owns/manifest'"
+ fi
+
+ regex_escape "$PWD/$alt" "$2"
+
+ # Convert the desired alternative to a real file and rewrite
+ # the manifest file to reflect this. The reverse of above.
+ dosu mv -f "'$alt'" "'$2'"
+ dosu sed -i "'s/$sea/$rep/'" "'../installed/$1/manifest'"
}
pkg_remove() {
@@ -860,8 +964,6 @@ pkg_install() {
pkg_name=${pkg_name%/*}
pkg_name=${pkg_name##*/}
- pkg_conflicts "$tar_file" "$pkg_name"
-
mkdir -p "$tar_dir/$pkg_name"
# Extract the tar-ball to catch any errors before installation begins.
@@ -882,6 +984,8 @@ pkg_install() {
[ "$install_dep" ] && die "$1" "Package requires ${install_dep%, }"
+ pkg_conflicts "$tar_file" "$pkg_name"
+
log "$pkg_name" "Installing package incrementally"
# Block being able to abort the script with Ctrl+C during installation.
@@ -1109,12 +1213,16 @@ args() {
#
# This handles the globbing characters '*', '!', '[' and ']' as per:
# https://pubs.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html
- [ "$action" != search ] && [ "$action" != s ] &&
- case $@ in
- *'*'*|*'!'*|*'['*|*']'*)
- die "Arguments contain invalid characters: '!*[]'"
- ;;
- esac
+ case $action in
+ a|alternatives|s|search) ;;
+
+ *)
+ case $@ in
+ *'*'*|*'!'*|*'['*|*']'*)
+ die "Arguments contain invalid characters: '!*[]'"
+ ;;
+ esac
+ esac
# Parse some arguments earlier to remove the need to duplicate code.
case $action in
@@ -1126,6 +1234,28 @@ args() {
# Actions can be abbreviated to their first letter. This saves
# keystrokes once you memorize the commands.
case $action in
+ a|alternatives)
+ if [ "$1" ]; then
+ pkg_swap "$@"
+
+ else
+ log "Alternatives:"
+
+ # Go to the choices directory and hide errors
+ # as there is nothing to list if the directory
+ # doesn't exist.
+ cd "$sys_db/../choices" 2>/dev/null
+ set +f
+
+ # Go over each alternative and format the file
+ # name for listing. (pkg_name>usr>bin>ls)
+ for pkg in *; do
+ [ "$pkg" = '*' ] ||
+ printf '%s\n' "$pkg" | sed 's|>| /|;s|>|/|g'
+ done
+ fi
+ ;;
+
b|build)
# If no arguments were passed, rebuild all packages.
[ "$1" ] || {
@@ -1206,15 +1336,16 @@ args() {
;;
h|help|-h|--help|'')
- log 'kiss [b|c|i|l|r|s|u|v] [pkg] [pkg] [pkg]'
- log 'build: Build a package'
- log 'checksum: Generate checksums'
- log 'install: Install a package'
- log 'list: List installed packages'
- log 'remove: Remove a package'
- log 'search: Search for a package'
- log 'update: Check for updates'
- log 'version: Package manager version'
+ log 'kiss [a|b|c|i|l|r|s|u|v] [pkg] [pkg] [pkg]'
+ log 'alternatives: List and swap to alternatives'
+ log 'build: Build a package'
+ log 'checksum: Generate checksums'
+ log 'install: Install a package'
+ log 'list: List installed packages'
+ log 'remove: Remove a package'
+ log 'search: Search for a package'
+ log 'update: Check for updates'
+ log 'version: Package manager version'
;;
*) die "'kiss $action' is not a valid command" ;;