devenv support (zsh feature)

2026-07-28 19:21:28 +01:00
parent 637e665581
commit a938343f87
2 changed files with 100 additions and 8 deletions
--- a/modules/features/zsh/devenv.zsh
+++ b/modules/features/zsh/devenv.zsh
@@ -0,0 +1,82 @@
+__devenv_reload_apply() {
+    if [ -n "$DEVENV_RELOAD_FILE" ] && [ -f "$DEVENV_RELOAD_FILE" ]; then
+        local output
+        output=$(DEVENV_RELOAD_FILE="$DEVENV_RELOAD_FILE" bash <<'RELOAD_BASH' 2>/dev/null
+__devenv_ignored_var() {
+    case "$1" in
+        _*|PWD|OLDPWD|SHLVL|SHELL|SHELLOPTS|BASHOPTS|BASH_*|HISTCMD|HISTFILE)
+            return 0 ;;
+        PS1|PS2|PS3|PS4|PROMPT|PROMPT_COMMAND|PROMPT_DIRTRIM)
+            return 0 ;;
+        COMP_*|READLINE_*|MAILCHECK|COLUMNS|LINES|RANDOM|SECONDS|LINENO|EPOCHSECONDS|EPOCHREALTIME|SRANDOM)
+            return 0 ;;
+        STARSHIP_*|__fish*|DIRENV_*|nix_saved_*)
+            return 0 ;;
+        *)  return 1 ;;
+    esac
+}
+__devenv_capture_env() { declare -p -x 2>/dev/null | LC_ALL=C sort; }
+__devenv_serialize_diff() { gzip -c | base64 -w0; }
+__devenv_deserialize_diff() { echo "$1" | base64 -d | gzip -d 2>/dev/null; }
+__devenv_compute_diff() {
+    local before_file="$1" after_file diff_content
+    after_file=$(mktemp); diff_content=$(mktemp)
+    __devenv_capture_env > "$after_file"
+    local -A before_vars after_vars
+    while IFS= read -r line; do
+        [[ "$line" != declare\ -x\ * ]] && continue
+        local vardef="${line#declare -x }" var="${vardef%%=*}"
+        [[ -z "$var" ]] && continue
+        __devenv_ignored_var "$var" && continue
+        before_vars["$var"]="$line"
+    done < "$before_file"
+    while IFS= read -r line; do
+        [[ "$line" != declare\ -x\ * ]] && continue
+        local vardef="${line#declare -x }" var="${vardef%%=*}"
+        [[ -z "$var" ]] && continue
+        __devenv_ignored_var "$var" && continue
+        after_vars["$var"]="$line"
+    done < "$after_file"
+    for var in "${!before_vars[@]}"; do
+        [[ "${after_vars[$var]}" != "${before_vars[$var]}" ]] && echo "P:${before_vars[$var]}" >> "$diff_content"
+    done
+    for var in "${!after_vars[@]}"; do
+        if [[ -z "${before_vars[$var]+x}" ]]; then echo "N:$var" >> "$diff_content"
+        elif [[ "${after_vars[$var]}" != "${before_vars[$var]}" ]]; then echo "N:$var" >> "$diff_content"; fi
+    done
+    _DEVENV_DIFF=$(__devenv_serialize_diff < "$diff_content"); export _DEVENV_DIFF
+    rm -f "$after_file" "$diff_content"
+}
+__devenv_apply_reverse_diff() {
+    [[ -z "$_DEVENV_DIFF" ]] && return
+    local -A prev_vars
+    local diff_content; diff_content=$(__devenv_deserialize_diff "$_DEVENV_DIFF")
+    while IFS= read -r line; do
+        if [[ "$line" == P:declare\ * ]]; then
+            local decl="${line#P:}" var="${decl#declare -x }"; var="${var%%=*}"
+            prev_vars["$var"]=1; eval "export ${decl#declare -x }" 2>/dev/null
+        fi
+    done <<< "$diff_content"
+    while IFS= read -r line; do
+        if [[ "$line" == N:* ]]; then
+            local var="${line#N:}"
+            [[ -z "${prev_vars[$var]+x}" ]] && unset "$var"
+        fi
+    done <<< "$diff_content"
+}
+__devenv_apply_reverse_diff
+_before=$(mktemp); __devenv_capture_env > "$_before"
+if { : >/dev/tty; } 2>/dev/null; then _devenv_reload_out=/dev/tty; else _devenv_reload_out=/dev/null; fi
+source "$DEVENV_RELOAD_FILE" >"$_devenv_reload_out" 2>"$_devenv_reload_out"
+rm -f "$DEVENV_RELOAD_FILE"; unset _devenv_reload_out
+__devenv_compute_diff "$_before"; rm -f "$_before"
+export -p
+RELOAD_BASH
+)
+        if [ -n "$output" ]; then eval "$output"; fi
+        _DEVENV_PATH="$PATH"
+    fi
+}
+__devenv_restore_path() {
+    [ -n "$_DEVENV_PATH" ] && export PATH="$_DEVENV_PATH"
+}