dot: change bash configuration

2026-03-16 18:23:38 +08:00
parent b8f0c66d87
commit 9ce32f5670
10 changed files with 358 additions and 27 deletions
--- a/dot/.bashrc.d/function.bash
+++ b/dot/.bashrc.d/function.bash
@@ -0,0 +1,136 @@
+generate-bash-completion() {
+    local file="$1"
+    local command="$2"
+
+    if [[ -z "$file" || -z "$command" ]]; then
+        echo "usage: generate-bash-completion <file> <command>" >&2
+        echo "example: generate-bash-completion mycmd '_mycmd_completion'" >&2
+        return 1
+    fi
+
+    local completion_dir="${HOME}/.local/share/bash-completion/completions"
+    local completion_file="$(realpath -m "${completion_dir}/${file}")"
+
+    if [[ -d "$completion_dir" && ! -w "$completion_dir" ]]; then
+        echo "ERROR: has no permission to write to directory '${completion_dir}'" >&2
+        return 1
+    fi
+
+    if [[ ! -f "$completion_file" ]]; then
+        if ! mkdir -p "$completion_dir"; then
+            echo "ERROR: cannot create directory '$completion_dir'" >&2
+            return 1
+        fi
+
+        if ! bash -c "$command" > "$completion_file"; then
+            echo "ERROR: failed to execute command '$command'" >&2
+            rm -f "$completion_file"
+            return 1
+        fi
+    fi
+}
+
+add-to-path() {
+    if [[ $# -eq 0 ]]; then
+        echo "usage: add-to-path <path1> [path2 ...]" >&2
+        echo "example: add-to-path /usr/local/bin /tmp/my-dir" >&2
+        return 1
+    fi
+
+    local -a dirs=("$@")
+    local dir
+    local dir_normalized
+    local new_path="$PATH"
+
+    for dir in "${dirs[@]}"; do
+        [[ -z "$dir" ]] && continue
+
+        dir_normalized="${dir%/}"
+        if [[ ! -d "$dir_normalized" ]]; then
+            echo "WARNING: '${dir}' is not a valid directory, skipped." >&2
+            continue
+        fi
+
+        case ":${new_path}:" in
+            *":${dir_normalized}:"*) ;;
+            *)
+                new_path="${dir_normalized}${new_path:+:}${new_path}"
+                ;;
+        esac
+    done
+
+    if [[ "$new_path" != "$PATH" ]]; then
+        export PATH="$new_path"
+    fi
+}
+
+remove-from-path() {
+    if [[ $# -eq 0 ]]; then
+        echo "usage: remove-from-path <path1> [path2 ...]" >&2
+        echo "example: remove-from-path /usr/local/bin /tmp/my-dir" >&2
+        return 1
+    fi
+
+    local original_ifs="$IFS"
+
+    local -a remove_paths=("$@")
+    local new_path=""
+    local path
+    local remove_path
+    local path_normalized
+    local remove_path_normalized
+    local -i keep_path=1     # 1=keep, 0=remove
+
+    IFS=':'
+    for path in $PATH; do
+        [[ -z "$path" ]] && continue
+
+        path_normalized="${path%/}" # remove / at tail
+        keep_path=1
+
+        for remove_path in "${remove_paths[@]}"; do
+            remove_path_normalized="${remove_path%/}"
+            if [[ "$path_normalized" == "$remove_path_normalized" ]]; then
+                keep_path=0
+                break
+            fi
+        done
+
+        if [[ $keep_path -eq 1 ]]; then
+            new_path="${new_path}${new_path:+:}${path}"
+        fi
+    done
+    IFS="$original_ifs"
+
+    export PATH="${new_path}"
+}
+
+show-path() {
+    echo "$PATH" | tr ':' '\n' | nl -w2 -s'. '
+}
+
+unhash-command-in-dirs() {
+    if [[ $# -eq 0 ]]; then
+        echo "usage: unhash-command-in-dir <dir1> [dir2 ...]" >&2
+        echo "example: unhash-command-in-dir ~/.local/bin/ ~/.volta/bin/" >&2
+        return 1
+    fi
+
+    local -a dirs=("$1")
+    local dir
+    local dir_normalized
+    local file_path
+    local filename
+    for dir in "${dirs[@]}"; do
+        [[ -z "$dir" || ! -d "$dir" ]] && continue
+
+        dir_normalized="${dir%/}"
+
+        for file_path in "$dir_normalized"/*; do
+            [[ ! -f "$file_path" || ! -x "$file_path" ]] && continue
+
+            filename="$(basename "$file_path")"
+            hash -d "$filename" 2>/dev/null
+        done
+    done
+}