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+# Functions related to obtaining sources
+
+pkg_sources() {
+ # Download any remote package sources. The existence of local
+ # files is also checked.
+ repo_dir=$(pkg_find "$1")
+
+ # Support packages without sources. Simply do nothing.
+ [ -f "$repo_dir/sources" ] || return 0
+
+ log "$1" "Downloading sources"
+
+ # Store each downloaded source in a directory named after the
+ # package it belongs to. This avoid conflicts between two packages
+ # having a source of the same name.
+ mkdir -p "$src_dir/$1" && cd "$src_dir/$1"
+
+ repo_dir=$(pkg_find "$1")
+
+ while read -r src dest || [ "$src" ]; do
+ # Remote git/hg repository or comment.
+ if [ -z "${src##\#*}" ] ||
+ [ -z "${src##git+*}" ] ||
+ [ -z "${src##hg+*}" ]
+
+ then :
+
+ # Remote source (cached).
+ elif [ -f "${src##*/}" ]; then
+ log "$1" "Found cached source '${src##*/}'"
+
+ # Remote source.
+ elif [ -z "${src##*://*}" ]; then
+ log "$1" "Downloading $src"
+
+ curl "$src" -fLo "${src##*/}" || {
+ rm -f "${src##*/}"
+ die "$1" "Failed to download $src"
+ }
+
+ # Local source.
+ elif [ -f "$repo_dir/$src" ]; then
+ log "$1" "Found local file '$src'"
+
+ else
+ die "$1" "No local file '$src'"
+ fi
+ done < "$repo_dir/sources"
+}
+
+pkg_extract() {
+ # Extract all source archives to the build directory and copy over
+ # any local repository files.
+ repo_dir=$(pkg_find "$1")
+
+ # Support packages without sources. Simply do nothing.
+ [ -f "$repo_dir/sources" ] || return 0
+
+ log "$1" "Extracting sources"
+
+ while read -r src dest || [ "$src" ]; do
+ mkdir -p "$mak_dir/$1/$dest" && cd "$mak_dir/$1/$dest"
+
+ case $src in
+ # Git repository.
+ git+*)
+ # Split the source into URL + OBJECT (branch or commit).
+ url=${src##git+} com=${url##*[@#]} com=${com#${url%[@#]*}}
+
+ log "$1" "Cloning ${url%[@#]*}"; {
+ git init
+ git remote add origin "${url%[@#]*}"
+ case "$url" in
+ # Tags are specified via '@'
+ *@*) git fetch -t --depth=1 origin "$com" || git fetch ;;
+ *) git fetch --depth=1 origin "$com" || git fetch
+ esac
+ git checkout "${com:-FETCH_HEAD}"
+ } || die "$1" "Failed to clone $src"
+ ;;
+
+ # Mercurial repository.
+ hg+*)
+ # Split the source into URL + OBJECT (branch or commit).
+ url=${src##hg+} com=${url##*[@#]} com=${com#${url%[@#]*}}
+
+ # Unfortunately, there is no shallow cloning with Mercurial.
+ log "$1" "Cloning ${url%[@#]*}"
+ hg clone -u "${com:-tip}"
+
+ ;;
+
+ # Comment or blank line.
+ \#*|'') continue ;;
+
+ # Only 'tar', 'cpio', and 'zip' archives are currently supported for
+ # extraction. Other filetypes are simply copied to '$mak_dir'
+ # which allows for manual extraction.
+ *://*.tar|*://*.tar.??|*://*.tar.???|*://*.tar.????|*://*.tgz|*://*.txz)
+
+ decompress "$src_dir/$1/${src##*/}" > .ktar
+
+ "$tar" xf .ktar || die "$1" "Couldn't extract ${src##*/}"
+
+ # We now list the contents of the tarball so we can do our
+ # version of 'strip-components'.
+ "$tar" tf .ktar |
+ while read -r file; do printf '%s\n' "${file%%/*}"; done |
+
+ # Do not repeat files.
+ uniq |
+
+ # For every directory in the base we move each file
+ # inside it to the upper directory.
+ while read -r dir ; do
+
+ # Skip if we are not dealing with a directory here.
+ # This way we don't remove files on the upper directory
+ # if a tar archive doesn't need directory stripping.
+ [ -d "${dir#.}" ] || continue
+
+ # Change into the directory in a subshell so we don't
+ # need to cd back to the upper directory.
+ (
+ cd "$dir"
+
+ # We use find because we want to move hidden files
+ # as well.
+ #
+ # Skip the file if it has the same name as the directory.
+ # We will deal with it later.
+ #
+ # Word splitting is intentional here.
+ # shellcheck disable=2046
+ find . \( ! -name . -prune \) ! -name "$dir" \
+ -exec mv -f {} .. \;
+
+ # If a file/directory with the same name as the directory
+ # exists, append a '.cptbak' to it and move it to the
+ # upper directory.
+ ! [ -e "$dir" ] || mv "$dir" "../${dir}.cptbak"
+ )
+ rmdir "$dir"
+
+ # If a backup file exists, move it into the original location.
+ ! [ -e "${dir}.cptbak" ] || mv "${dir}.cptbak" "$dir"
+ done
+
+ # Clean up the temporary tarball.
+ rm -f .ktar
+ ;;
+
+ *://*.cpio|*://*.cpio.??|*://*.cpio.???|*://*.cpio.????)
+ decompress "$src_dir/$1/${src##*/}" | cpio -i
+
+ ;;
+
+ *://*.zip)
+ unzip "$src_dir/$1/${src##*/}" ||
+ die "$1" "Couldn't extract ${src##*/}"
+
+ ;;
+
+ *)
+ # Local file.
+ if [ -f "$repo_dir/$src" ]; then
+ cp -f "$repo_dir/$src" .
+
+ # Remote file.
+ elif [ -f "$src_dir/$1/${src##*/}" ]; then
+ cp -f "$src_dir/$1/${src##*/}" .
+
+ else
+ die "$1" "Local file $src not found"
+ fi
+ ;;
+ esac
+ done < "$repo_dir/sources"
+}
+
+pkg_fetch() {
+ log "Updating repositories"
+
+ run_hook pre-fetch
+
+ # Create a list of all repositories.
+ # See [1] at top of script.
+ # shellcheck disable=2046,2086
+ { IFS=:; set -- $CPT_PATH; IFS=$old_ifs ;}
+
+ # Update each repository in '$CPT_PATH'. It is assumed that
+ # each repository is 'git' tracked.
+ for repo; do
+ # Go to the root of the repository (if it exists).
+ cd "$repo"
+ cd "$(git rev-parse --show-toplevel 2>/dev/null)" 2>/dev/null ||
+ cd "$(hg root 2>/dev/null)" 2>/dev/null ||:
+
+ if [ -d .git ]; then
+
+ [ "$(git remote 2>/dev/null)" ] || {
+ log "$repo" " "
+ printf '%s\n' "No remote, skipping."
+ continue
+ }
+
+ contains "$repos" "$PWD" || {
+ repos="$repos $PWD "
+
+ # Display a tick if signing is enabled for this
+ # repository.
+ case $(git config merge.verifySignatures) in
+ true) log "$PWD" "[signed] " ;;
+ *) log "$PWD" " " ;;
+ esac
+
+ if [ -w "$PWD" ] && [ "$uid" != 0 ]; then
+ git fetch
+ git merge
+ git submodule update --remote --init -f
+
+ else
+ [ "$uid" = 0 ] || log "$PWD" "Need root to update"
+
+ # Find out the owner of the repository and spawn
+ # git as this user below.
+ #
+ # This prevents 'git' from changing the original
+ # ownership of files and directories in the rare
+ # case that the repository is owned by a 3rd user.
+ (
+ user=$(_stat "$PWD")
+
+ [ "$user" = root ] ||
+ log "Dropping permissions to $user for pull"
+
+ git_cmd="git fetch && git merge && git submodule update --remote --init -f"
+ case $su in *su) git_cmd="'$git_cmd'"; esac
+
+ # Spawn a subshell to run multiple commands as
+ # root at once. This makes things easier on users
+ # who aren't using persist/timestamps for auth
+ # caching.
+ user=$user as_root sh -c "$git_cmd"
+ )
+ fi
+ }
+ elif [ -d .hg ]; then
+
+ [ "$(hg showconfig paths 2>/dev/null)" ] || {
+ log "$repo" " "
+ printf '%s\n' "No remote, skipping."
+ continue
+ }
+
+ contains "$repos $PWD" || {
+ repos="$repos $PWD"
+
+ if [ -w "$PWD" ] && [ "$uid" != 0 ]; then
+ hg pull
+ hg update
+ else
+ [ "$uid" ] || log "$PWD" "Need root to update"
+
+ # We are going to do the same operation as above, to
+ # find the owner of the repository.
+ (
+ user=$(_stat "$PWD")
+
+ [ "$user" = root ] ||
+ log "Dropping permissions to $user for pull"
+
+ hg_cmd="hg pull && hg update"
+
+ case $su in *su) hg_cmd="'$hg_cmd'"; esac
+ user=$user as_root sh -c "$hg_cmd"
+ )
+ fi
+ }
+ elif [ -f .rsync ]; then
+ # If an .rsync_root file exists, we check that the repository root
+ # exists. If it does, we change to that directory to do the fetch.
+ # This way, we allow for partial repositories while making sure that
+ # we can fetch the repository in a single operation.
+ [ -f .rsync_root ] && {
+ read -r rsync_root < .rsync_root
+ [ -f "$rsync_root/.rsync" ] && cd "$rsync_root"
+ }
+ contains "$repos" "$PWD" || {
+ repos="$repos $PWD"
+ read -r remote < .rsync
+ if [ -w "$PWD" ] && [ "$uid" != 0 ]; then
+ rsync -acvzzC --include=core --delete "$remote/" "$PWD"
+ else
+ [ "$uid" = 0 ] || log "$PWD" "Need root to update"
+
+ # Similar to the git update, we find the owner of
+ # the repository and spawn rsync as that user.
+ (
+ user=$(_stat "$PWD")
+
+ [ "$user" = root ] ||
+ log "Dropping permissions to $user for pull"
+
+ user=$user as_root rsync -acvzzC --include=core --delete "$remote/" "$PWD"
+ )
+ fi
+ }
+ else
+ log "$repo" " "
+ printf '%s\n' "Not a remote repository, skipping."
+ fi
+ done
+
+ run_hook post-fetch
+}
+
+# Local Variables:
+# mode: sh
+# End:
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