Merge 7ff657c7a5 into 640b324401
This commit is contained in:
Ross Smith II
GitHub
commit
c15a9daa68
1 changed files with 86 additions and 40 deletions
126
yadm
126
yadm
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@ -363,8 +363,8 @@ function choose_template_cmd() {
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function template_default() {
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input="$1"
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output="$2"
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temp_file="${output}.$$.$RANDOM"
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local awk_pgm
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# the explicit "space + tab" character class used below is used because not
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# all versions of awk seem to support the POSIX character classes [[:blank:]]
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read -r -d '' awk_pgm << "EOF"
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@ -479,7 +479,9 @@ function replace_vars(input) {
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}
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EOF
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"${AWK_PROGRAM[0]}" \
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local source_dir content
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source_dir=$(dirname "$input")
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content=$("${AWK_PROGRAM[0]}" \
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-v class="$local_class" \
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-v arch="$local_arch" \
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-v os="$local_system" \
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@ -488,19 +490,20 @@ EOF
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-v distro="$local_distro" \
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-v distro_family="$local_distro_family" \
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-v source="$input" \
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-v source_dir="$(dirname "$input")" \
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-v source_dir="$source_dir" \
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"$awk_pgm" \
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"$input" "${local_classes[@]}" > "$temp_file" || rm -f "$temp_file"
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"$input" "${local_classes[@]}")
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move_file "$input" "$output" "$temp_file"
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move_file "$input" "$output" "$content"
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}
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function template_j2cli() {
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input="$1"
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output="$2"
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temp_file="${output}.$$.$RANDOM"
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local input="$1"
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local output="$2"
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local yadm_classes content
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YADM_CLASS="$local_class" \
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yadm_classes=$(join_string $'\n' "${local_classes[@]}")
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content=$(YADM_CLASS="$local_class" \
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YADM_ARCH="$local_arch" \
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YADM_OS="$local_system" \
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YADM_HOSTNAME="$local_host" \
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@ -508,18 +511,20 @@ function template_j2cli() {
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YADM_DISTRO="$local_distro" \
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YADM_DISTRO_FAMILY="$local_distro_family" \
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YADM_SOURCE="$input" \
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YADM_CLASSES="$(join_string $'\n' "${local_classes[@]}")" \
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"$J2CLI_PROGRAM" "$input" -o "$temp_file"
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YADM_CLASSES="$yadm_classes" \
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"$J2CLI_PROGRAM" "$input")
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move_file "$input" "$output" "$temp_file"
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move_file "$input" "$output" "$content" "$?"
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}
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function template_envtpl() {
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input="$1"
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output="$2"
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temp_file="${output}.$$.$RANDOM"
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local input="$1"
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local output="$2"
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local yadm_classes content
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YADM_CLASS="$local_class" \
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yadm_classes=$(join_string $'\n' "${local_classes[@]}")
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# shellcheck disable=SC2094
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content=$(YADM_CLASS="$local_class" \
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YADM_ARCH="$local_arch" \
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YADM_OS="$local_system" \
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YADM_HOSTNAME="$local_host" \
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@ -527,19 +532,20 @@ function template_envtpl() {
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YADM_DISTRO="$local_distro" \
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YADM_DISTRO_FAMILY="$local_distro_family" \
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YADM_SOURCE="$input" \
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YADM_CLASSES="$(join_string $'\n' "${local_classes[@]}")" \
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"$ENVTPL_PROGRAM" --keep-template "$input" -o "$temp_file"
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YADM_CLASSES="$yadm_classes" \
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"$ENVTPL_PROGRAM" <"$input")
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move_file "$input" "$output" "$temp_file"
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move_file "$input" "$output" "$content" "$?"
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}
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function template_esh() {
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input="$1"
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output="$2"
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temp_file="${output}.$$.$RANDOM"
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local input="$1"
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local output="$2"
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local yadm_classes content
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YADM_CLASSES="$(join_string $'\n' "${local_classes[@]}")" \
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"$ESH_PROGRAM" -o "$temp_file" "$input" \
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yadm_classes="$(join_string $'\n' "${local_classes[@]}")"
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content=$(YADM_CLASSES="$yadm_classes" \
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"$ESH_PROGRAM" "$input" \
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YADM_CLASS="$local_class" \
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YADM_ARCH="$local_arch" \
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YADM_OS="$local_system" \
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@ -547,25 +553,60 @@ function template_esh() {
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YADM_USER="$local_user" \
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YADM_DISTRO="$local_distro" \
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YADM_DISTRO_FAMILY="$local_distro_family" \
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YADM_SOURCE="$input"
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YADM_SOURCE="$input")
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move_file "$input" "$output" "$temp_file"
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move_file "$input" "$output" "$content" "$?"
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}
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function move_file() {
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local input=$1
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local output=$2
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local temp_file=$3
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local input="$1"
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local output="$2"
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local content="$3"
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local err="${4:-}"
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[ ! -f "$temp_file" ] && return
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if [[ -s "$input" && -z "$content" ]]; then
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debug "Failed to create $output from template $input: error $err"
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return 1
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fi
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# if the output files already exists as read-only, change it to be writable.
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# there are some environments in which a read-only file will prevent the move
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# from being successful.
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[[ -e "$output" && ! -w "$output" ]] && chmod u+w "$output"
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if [[ -r "$output" ]]; then
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local old_content
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old_content=$(< "$output")
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mv -f "$temp_file" "$output"
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copy_perms "$input" "$output"
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if [[ "$old_content" == "$content" ]]; then
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debug "Not rewriting file as contents have not changed: $output"
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return 0
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fi
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# if the output files already exists as read-only, change it to be writable.
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# there are some environments in which a read-only file will prevent the move
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# from being successful.
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if [[ ! -w "$output" ]]; then
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if ! chmod u+w "$output"; then
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debug "Unable to make '$output' writeable"
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fi
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fi
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fi
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if [ -n "$loud" ]; then
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echo "Creating $output from template $input"
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else
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debug "Creating $output from template $input"
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fi
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local temp_file="${output}.$$.$RANDOM"
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if printf '%s\n' "$content" >"$temp_file"; then
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if mv -f "$temp_file" "$output"; then
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copy_perms "$input" "$output"
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return
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fi
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debug "Failed to rename '$temp_file' to '$output'"
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else
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debug "Failed to create '$temp_file' to generate '$output'"
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fi
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rm -f "$temp_file" &>/dev/null
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return 1
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}
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# ****** yadm Commands ******
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@ -733,8 +774,6 @@ function alt_linking() {
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template_cmd="${alt_template_cmds[$index]}"
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if [ -n "$template_cmd" ]; then
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# a template is defined, process the template
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debug "Creating $tgt from template $src"
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[ -n "$loud" ] && echo "Creating $tgt from template $src"
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# ensure the destination path exists
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assert_parent "$tgt"
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# remove any existing symlink before processing template
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@ -2137,7 +2176,7 @@ function get_mode {
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# only accept results if they are octal
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if [[ ! $mode =~ ^[0-7]+$ ]] ; then
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mode=""
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return
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fi
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echo "$mode"
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@ -2147,7 +2186,14 @@ function copy_perms {
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local source="$1"
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local dest="$2"
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mode=$(get_mode "$source")
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[ -n "$mode" ] && chmod "$mode" "$dest"
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if [[ -z "$mode" ]]; then
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debug "Unable to get mode for '$source'"
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return 0 # to allow tests to pass
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fi
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if ! chmod "$mode" "$dest"; then
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debug "Unable to set mode to '$mode' on '$dest'"
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return 0 # to allow tests to pass
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fi
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return 0
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}
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