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Mole/lib/core/base.sh

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#!/bin/bash
# Mole - Base Definitions and Utilities
# Core definitions, constants, and basic utility functions used by all modules
set -euo pipefail
# Prevent multiple sourcing
if [[ -n "${MOLE_BASE_LOADED:-}" ]]; then
return 0
fi
readonly MOLE_BASE_LOADED=1
# ============================================================================
# Color Definitions
# ============================================================================
readonly ESC=$'\033'
readonly GREEN="${ESC}[0;32m"
readonly BLUE="${ESC}[0;34m"
readonly CYAN="${ESC}[0;36m"
readonly YELLOW="${ESC}[0;33m"
readonly PURPLE="${ESC}[0;35m"
readonly PURPLE_BOLD="${ESC}[1;35m"
readonly RED="${ESC}[0;31m"
readonly GRAY="${ESC}[0;90m"
readonly NC="${ESC}[0m"
# ============================================================================
# Icon Definitions
# ============================================================================
readonly ICON_CONFIRM="◎"
readonly ICON_ADMIN="⚙"
readonly ICON_SUCCESS="✓"
readonly ICON_ERROR="☻"
readonly ICON_WARNING="●"
readonly ICON_EMPTY="○"
readonly ICON_SOLID="●"
readonly ICON_LIST="•"
readonly ICON_ARROW="➤"
readonly ICON_DRY_RUN="→"
readonly ICON_NAV_UP="↑"
readonly ICON_NAV_DOWN="↓"
# ============================================================================
# Global Configuration Constants
# ============================================================================
readonly MOLE_TEMP_FILE_AGE_DAYS=7 # Temp file retention (days)
readonly MOLE_ORPHAN_AGE_DAYS=60 # Orphaned data retention (days)
readonly MOLE_MAX_PARALLEL_JOBS=15 # Parallel job limit
readonly MOLE_MAIL_DOWNLOADS_MIN_KB=5120 # Mail attachment size threshold
readonly MOLE_MAIL_AGE_DAYS=30 # Mail attachment retention (days)
readonly MOLE_LOG_AGE_DAYS=7 # Log retention (days)
readonly MOLE_CRASH_REPORT_AGE_DAYS=7 # Crash report retention (days)
readonly MOLE_SAVED_STATE_AGE_DAYS=30 # Saved state retention (days) - increased for safety
readonly MOLE_TM_BACKUP_SAFE_HOURS=48 # TM backup safety window (hours)
readonly MOLE_MAX_DS_STORE_FILES=500 # Max .DS_Store files to clean per scan
readonly MOLE_MAX_ORPHAN_ITERATIONS=100 # Max iterations for orphaned app data scan
# ============================================================================
# Whitelist Configuration
# ============================================================================
readonly FINDER_METADATA_SENTINEL="FINDER_METADATA"
declare -a DEFAULT_WHITELIST_PATTERNS=(
"$HOME/Library/Caches/ms-playwright*"
"$HOME/.cache/huggingface*"
"$HOME/.m2/repository/*"
"$HOME/.ollama/models/*"
"$HOME/Library/Caches/com.nssurge.surge-mac/*"
"$HOME/Library/Application Support/com.nssurge.surge-mac/*"
"$HOME/Library/Caches/org.R-project.R/R/renv/*"
"$HOME/Library/Caches/pypoetry/virtualenvs*"
"$HOME/Library/Caches/JetBrains*"
"$HOME/Library/Caches/com.jetbrains.toolbox*"
"$HOME/Library/Application Support/JetBrains*"
"$HOME/Library/Caches/com.apple.finder"
"$HOME/Library/Mobile Documents*"
# System-critical caches that affect macOS functionality and stability
# CRITICAL: Removing these will cause system search and UI issues
"$HOME/Library/Caches/com.apple.FontRegistry*"
"$HOME/Library/Caches/com.apple.spotlight*"
"$HOME/Library/Caches/com.apple.Spotlight*"
"$HOME/Library/Caches/CloudKit*"
"$FINDER_METADATA_SENTINEL"
)
declare -a DEFAULT_OPTIMIZE_WHITELIST_PATTERNS=(
"check_brew_health"
"check_touchid"
"check_git_config"
)
# ============================================================================
# BSD Stat Compatibility
# ============================================================================
readonly STAT_BSD="/usr/bin/stat"
# Get file size in bytes
get_file_size() {
local file="$1"
local result
result=$($STAT_BSD -f%z "$file" 2> /dev/null)
echo "${result:-0}"
}
# Get file modification time in epoch seconds
get_file_mtime() {
local file="$1"
[[ -z "$file" ]] && {
echo "0"
return
}
local result
result=$($STAT_BSD -f%m "$file" 2> /dev/null || echo "")
if [[ "$result" =~ ^[0-9]+$ ]]; then
echo "$result"
else
echo "0"
fi
}
# Determine date command once
if [[ -x /bin/date ]]; then
_DATE_CMD="/bin/date"
else
_DATE_CMD="date"
fi
# Get current time in epoch seconds (defensive against locale/aliases)
get_epoch_seconds() {
local result
result=$($_DATE_CMD +%s 2> /dev/null || echo "")
if [[ "$result" =~ ^[0-9]+$ ]]; then
echo "$result"
else
echo "0"
fi
}
# Get file owner username
get_file_owner() {
local file="$1"
$STAT_BSD -f%Su "$file" 2> /dev/null || echo ""
}
# ============================================================================
# System Utilities
# ============================================================================
# Check if System Integrity Protection is enabled
# Returns: 0 if SIP is enabled, 1 if disabled or cannot determine
is_sip_enabled() {
if ! command -v csrutil > /dev/null 2>&1; then
return 0
fi
local sip_status
sip_status=$(csrutil status 2> /dev/null || echo "")
if echo "$sip_status" | grep -qi "enabled"; then
return 0
else
return 1
fi
}
# Check if running in an interactive terminal
is_interactive() {
[[ -t 1 ]]
}
# Detect CPU architecture
# Returns: "Apple Silicon" or "Intel"
detect_architecture() {
if [[ "$(uname -m)" == "arm64" ]]; then
echo "Apple Silicon"
else
echo "Intel"
fi
}
# Get free disk space on root volume
# Returns: human-readable string (e.g., "100G")
get_free_space() {
local target="/"
if [[ -d "/System/Volumes/Data" ]]; then
target="/System/Volumes/Data"
fi
df -h "$target" | awk 'NR==2 {print $4}'
}
# Get Darwin kernel major version (e.g., 24 for 24.2.0)
# Returns 999 on failure to adopt conservative behavior (assume modern system)
get_darwin_major() {
local kernel
kernel=$(uname -r 2> /dev/null || true)
local major="${kernel%%.*}"
if [[ ! "$major" =~ ^[0-9]+$ ]]; then
# Return high number to skip potentially dangerous operations on unknown systems
major=999
fi
echo "$major"
}
# Check if Darwin kernel major version meets minimum
is_darwin_ge() {
local minimum="$1"
local major
major=$(get_darwin_major)
[[ "$major" -ge "$minimum" ]]
}
# Get optimal parallel jobs for operation type (scan|io|compute|default)
get_optimal_parallel_jobs() {
local operation_type="${1:-default}"
local cpu_cores
cpu_cores=$(sysctl -n hw.ncpu 2> /dev/null || echo 4)
case "$operation_type" in
scan | io)
echo $((cpu_cores * 2))
;;
compute)
echo "$cpu_cores"
;;
*)
echo $((cpu_cores + 2))
;;
esac
}
# ============================================================================
# User Context Utilities
# ============================================================================
is_root_user() {
[[ "$(id -u)" == "0" ]]
}
get_user_home() {
local user="$1"
local home=""
if [[ -z "$user" ]]; then
echo ""
return 0
fi
if command -v dscl > /dev/null 2>&1; then
home=$(dscl . -read "/Users/$user" NFSHomeDirectory 2> /dev/null | awk '{print $2}' | head -1 || true)
fi
if [[ -z "$home" ]]; then
home=$(eval echo "~$user" 2> /dev/null || true)
fi
if [[ "$home" == "~"* ]]; then
home=""
fi
echo "$home"
}
get_invoking_user() {
if [[ -n "${SUDO_USER:-}" && "${SUDO_USER:-}" != "root" ]]; then
echo "$SUDO_USER"
return 0
fi
echo "${USER:-}"
}
get_invoking_uid() {
if [[ -n "${SUDO_UID:-}" ]]; then
echo "$SUDO_UID"
return 0
fi
local uid
uid=$(id -u 2> /dev/null || true)
echo "$uid"
}
get_invoking_gid() {
if [[ -n "${SUDO_GID:-}" ]]; then
echo "$SUDO_GID"
return 0
fi
local gid
gid=$(id -g 2> /dev/null || true)
echo "$gid"
}
get_invoking_home() {
if [[ -n "${SUDO_USER:-}" && "${SUDO_USER:-}" != "root" ]]; then
get_user_home "$SUDO_USER"
return 0
fi
echo "${HOME:-}"
}
ensure_user_dir() {
local raw_path="$1"
if [[ -z "$raw_path" ]]; then
return 0
fi
local target_path="$raw_path"
if [[ "$target_path" == "~"* ]]; then
target_path="${target_path/#\~/$HOME}"
fi
mkdir -p "$target_path" 2> /dev/null || true
if ! is_root_user; then
return 0
fi
local sudo_user="${SUDO_USER:-}"
if [[ -z "$sudo_user" || "$sudo_user" == "root" ]]; then
return 0
fi
local user_home
user_home=$(get_user_home "$sudo_user")
if [[ -z "$user_home" ]]; then
return 0
fi
user_home="${user_home%/}"
if [[ "$target_path" != "$user_home" && "$target_path" != "$user_home/"* ]]; then
return 0
fi
local owner_uid="${SUDO_UID:-}"
local owner_gid="${SUDO_GID:-}"
if [[ -z "$owner_uid" || -z "$owner_gid" ]]; then
owner_uid=$(id -u "$sudo_user" 2> /dev/null || true)
owner_gid=$(id -g "$sudo_user" 2> /dev/null || true)
fi
if [[ -z "$owner_uid" || -z "$owner_gid" ]]; then
return 0
fi
local dir="$target_path"
while [[ -n "$dir" && "$dir" != "/" ]]; do
# Early stop: if ownership is already correct, no need to continue up the tree
if [[ -d "$dir" ]]; then
local current_uid
current_uid=$("$STAT_BSD" -f%u "$dir" 2> /dev/null || echo "")
if [[ "$current_uid" == "$owner_uid" ]]; then
break
fi
fi
chown "$owner_uid:$owner_gid" "$dir" 2> /dev/null || true
if [[ "$dir" == "$user_home" ]]; then
break
fi
dir=$(dirname "$dir")
if [[ "$dir" == "." ]]; then
break
fi
done
}
ensure_user_file() {
local raw_path="$1"
if [[ -z "$raw_path" ]]; then
return 0
fi
local target_path="$raw_path"
if [[ "$target_path" == "~"* ]]; then
target_path="${target_path/#\~/$HOME}"
fi
ensure_user_dir "$(dirname "$target_path")"
touch "$target_path" 2> /dev/null || true
if ! is_root_user; then
return 0
fi
local sudo_user="${SUDO_USER:-}"
if [[ -z "$sudo_user" || "$sudo_user" == "root" ]]; then
return 0
fi
local user_home
user_home=$(get_user_home "$sudo_user")
if [[ -z "$user_home" ]]; then
return 0
fi
user_home="${user_home%/}"
if [[ "$target_path" != "$user_home" && "$target_path" != "$user_home/"* ]]; then
return 0
fi
local owner_uid="${SUDO_UID:-}"
local owner_gid="${SUDO_GID:-}"
if [[ -z "$owner_uid" || -z "$owner_gid" ]]; then
owner_uid=$(id -u "$sudo_user" 2> /dev/null || true)
owner_gid=$(id -g "$sudo_user" 2> /dev/null || true)
fi
if [[ -n "$owner_uid" && -n "$owner_gid" ]]; then
chown "$owner_uid:$owner_gid" "$target_path" 2> /dev/null || true
fi
}
# ============================================================================
# Formatting Utilities
# ============================================================================
# Convert bytes to human-readable format (e.g., 1.5GB)
bytes_to_human() {
local bytes="$1"
[[ "$bytes" =~ ^[0-9]+$ ]] || {
echo "0B"
return 1
}
# GB: >= 1073741824 bytes
if ((bytes >= 1073741824)); then
printf "%d.%02dGB\n" $((bytes / 1073741824)) $(((bytes % 1073741824) * 100 / 1073741824))
# MB: >= 1048576 bytes
elif ((bytes >= 1048576)); then
printf "%d.%01dMB\n" $((bytes / 1048576)) $(((bytes % 1048576) * 10 / 1048576))
# KB: >= 1024 bytes (round up)
elif ((bytes >= 1024)); then
printf "%dKB\n" $(((bytes + 512) / 1024))
else
printf "%dB\n" "$bytes"
fi
}
# Convert kilobytes to human-readable format
# Args: $1 - size in KB
# Returns: formatted string
bytes_to_human_kb() {
bytes_to_human "$((${1:-0} * 1024))"
}
# Get brand-friendly localized name for an application
get_brand_name() {
local name="$1"
# Detect if system primary language is Chinese (Cached)
if [[ -z "${MOLE_IS_CHINESE_SYSTEM:-}" ]]; then
local sys_lang
sys_lang=$(defaults read -g AppleLanguages 2> /dev/null | grep -o 'zh-Hans\|zh-Hant\|zh' | head -1 || echo "")
if [[ -n "$sys_lang" ]]; then
export MOLE_IS_CHINESE_SYSTEM="true"
else
export MOLE_IS_CHINESE_SYSTEM="false"
fi
fi
local is_chinese="${MOLE_IS_CHINESE_SYSTEM}"
# Return localized names based on system language
if [[ "$is_chinese" == true ]]; then
# Chinese system - prefer Chinese names
case "$name" in
"qiyimac" | "iQiyi") echo "爱奇艺" ;;
"wechat" | "WeChat") echo "微信" ;;
"QQ") echo "QQ" ;;
"VooV Meeting") echo "腾讯会议" ;;
"dingtalk" | "DingTalk") echo "钉钉" ;;
"NeteaseMusic" | "NetEase Music") echo "网易云音乐" ;;
"BaiduNetdisk" | "Baidu NetDisk") echo "百度网盘" ;;
"alipay" | "Alipay") echo "支付宝" ;;
"taobao" | "Taobao") echo "淘宝" ;;
"futunn" | "Futu NiuNiu") echo "富途牛牛" ;;
"tencent lemon" | "Tencent Lemon Cleaner" | "Tencent Lemon") echo "腾讯柠檬清理" ;;
*) echo "$name" ;;
esac
else
# Non-Chinese system - use English names
case "$name" in
"qiyimac" | "爱奇艺") echo "iQiyi" ;;
"wechat" | "微信") echo "WeChat" ;;
"QQ") echo "QQ" ;;
"腾讯会议") echo "VooV Meeting" ;;
"dingtalk" | "钉钉") echo "DingTalk" ;;
"网易云音乐") echo "NetEase Music" ;;
"百度网盘") echo "Baidu NetDisk" ;;
"alipay" | "支付宝") echo "Alipay" ;;
"taobao" | "淘宝") echo "Taobao" ;;
"富途牛牛") echo "Futu NiuNiu" ;;
"腾讯柠檬清理" | "Tencent Lemon Cleaner") echo "Tencent Lemon" ;;
"keynote" | "Keynote") echo "Keynote" ;;
"pages" | "Pages") echo "Pages" ;;
"numbers" | "Numbers") echo "Numbers" ;;
*) echo "$name" ;;
esac
fi
}
# ============================================================================
# Temporary File Management
# ============================================================================
# Tracked temporary files and directories
declare -a MOLE_TEMP_FILES=()
declare -a MOLE_TEMP_DIRS=()
# Create tracked temporary file
create_temp_file() {
local temp
temp=$(mktemp) || return 1
register_temp_file "$temp"
echo "$temp"
}
# Create tracked temporary directory
create_temp_dir() {
local temp
temp=$(mktemp -d) || return 1
register_temp_dir "$temp"
echo "$temp"
}
# Register existing file for cleanup
register_temp_file() {
MOLE_TEMP_FILES+=("$1")
}
# Register existing directory for cleanup
register_temp_dir() {
MOLE_TEMP_DIRS+=("$1")
}
# Create temp file with prefix (for analyze.sh compatibility)
# Compatible with both BSD mktemp (macOS default) and GNU mktemp (coreutils)
mktemp_file() {
local prefix="${1:-mole}"
local temp
# Use TMPDIR if set, otherwise /tmp
# Add .XXXXXX suffix to work with both BSD and GNU mktemp
temp=$(mktemp "${TMPDIR:-/tmp}/${prefix}.XXXXXX") || return 1
register_temp_file "$temp"
echo "$temp"
}
# Cleanup all tracked temp files and directories
cleanup_temp_files() {
stop_inline_spinner 2> /dev/null || true
local file
if [[ ${#MOLE_TEMP_FILES[@]} -gt 0 ]]; then
for file in "${MOLE_TEMP_FILES[@]}"; do
[[ -f "$file" ]] && rm -f "$file" 2> /dev/null || true
done
fi
if [[ ${#MOLE_TEMP_DIRS[@]} -gt 0 ]]; then
for file in "${MOLE_TEMP_DIRS[@]}"; do
[[ -d "$file" ]] && rm -rf "$file" 2> /dev/null || true # SAFE: cleanup_temp_files
done
fi
MOLE_TEMP_FILES=()
MOLE_TEMP_DIRS=()
}
# ============================================================================
# Section Tracking (for progress indication)
# ============================================================================
# Global section tracking variables
TRACK_SECTION=0
SECTION_ACTIVITY=0
# Start a new section
# Args: $1 - section title
start_section() {
TRACK_SECTION=1
SECTION_ACTIVITY=0
echo ""
echo -e "${PURPLE_BOLD}${ICON_ARROW} $1${NC}"
}
# End a section
# Shows "Nothing to tidy" if no activity was recorded
end_section() {
if [[ "${TRACK_SECTION:-0}" == "1" && "${SECTION_ACTIVITY:-0}" == "0" ]]; then
echo -e " ${GREEN}${ICON_SUCCESS}${NC} Nothing to tidy"
fi
TRACK_SECTION=0
}
# Mark activity in current section
note_activity() {
if [[ "${TRACK_SECTION:-0}" == "1" ]]; then
SECTION_ACTIVITY=1
fi
}
# Start a section spinner with optional message
# Usage: start_section_spinner "message"
start_section_spinner() {
local message="${1:-Scanning...}"
stop_inline_spinner 2> /dev/null || true
if [[ -t 1 ]]; then
MOLE_SPINNER_PREFIX=" " start_inline_spinner "$message"
fi
}
# Stop spinner and clear the line
# Usage: stop_section_spinner
stop_section_spinner() {
stop_inline_spinner 2> /dev/null || true
if [[ -t 1 ]]; then
echo -ne "\r\033[K" >&2 || true
fi
}
# Safe terminal line clearing with terminal type detection
# Usage: safe_clear_lines <num_lines> [tty_device]
# Returns: 0 on success, 1 if terminal doesn't support ANSI
safe_clear_lines() {
local lines="${1:-1}"
local tty_device="${2:-/dev/tty}"
# Use centralized ANSI support check (defined below)
# Note: This forward reference works because functions are parsed before execution
is_ansi_supported 2> /dev/null || return 1
# Clear lines one by one (more reliable than multi-line sequences)
local i
for ((i = 0; i < lines; i++)); do
printf "\033[1A\r\033[K" > "$tty_device" 2> /dev/null || return 1
done
return 0
}
# Safe single line clear with fallback
# Usage: safe_clear_line [tty_device]
safe_clear_line() {
local tty_device="${1:-/dev/tty}"
# Use centralized ANSI support check
is_ansi_supported 2> /dev/null || return 1
printf "\r\033[K" > "$tty_device" 2> /dev/null || return 1
return 0
}
# Update progress spinner if enough time has elapsed
# Usage: update_progress_if_needed <completed> <total> <last_update_time_var> [interval]
# Example: update_progress_if_needed "$completed" "$total" last_progress_update 2
# Returns: 0 if updated, 1 if skipped
update_progress_if_needed() {
local completed="$1"
local total="$2"
local last_update_var="$3" # Name of variable holding last update time
local interval="${4:-2}" # Default: update every 2 seconds
# Get current time
local current_time
current_time=$(get_epoch_seconds)
# Get last update time from variable
local last_time
eval "last_time=\${$last_update_var:-0}"
[[ "$last_time" =~ ^[0-9]+$ ]] || last_time=0
# Check if enough time has elapsed
if [[ $((current_time - last_time)) -ge $interval ]]; then
# Update the spinner with progress
stop_section_spinner
start_section_spinner "Scanning items... ($completed/$total)"
# Update the last_update_time variable
eval "$last_update_var=$current_time"
return 0
fi
return 1
}
# ============================================================================
# Spinner Stack Management (prevents nesting issues)
# ============================================================================
# Global spinner stack
declare -a MOLE_SPINNER_STACK=()
# Push current spinner state onto stack
# Usage: push_spinner_state
push_spinner_state() {
local current_state=""
# Save current spinner PID if running
if [[ -n "${MOLE_SPINNER_PID:-}" ]] && kill -0 "$MOLE_SPINNER_PID" 2> /dev/null; then
current_state="running:$MOLE_SPINNER_PID"
else
current_state="stopped"
fi
MOLE_SPINNER_STACK+=("$current_state")
debug_log "Pushed spinner state: $current_state (stack depth: ${#MOLE_SPINNER_STACK[@]})"
}
# Pop and restore spinner state from stack
# Usage: pop_spinner_state
pop_spinner_state() {
if [[ ${#MOLE_SPINNER_STACK[@]} -eq 0 ]]; then
debug_log "Warning: Attempted to pop from empty spinner stack"
return 1
fi
# Stack depth safety check
if [[ ${#MOLE_SPINNER_STACK[@]} -gt 10 ]]; then
debug_log "Warning: Spinner stack depth excessive (${#MOLE_SPINNER_STACK[@]}), possible leak"
fi
local last_idx=$((${#MOLE_SPINNER_STACK[@]} - 1))
local state="${MOLE_SPINNER_STACK[$last_idx]}"
# Remove from stack (Bash 3.2 compatible way)
# Instead of unset, rebuild array without last element
local -a new_stack=()
local i
for ((i = 0; i < last_idx; i++)); do
new_stack+=("${MOLE_SPINNER_STACK[$i]}")
done
MOLE_SPINNER_STACK=("${new_stack[@]}")
debug_log "Popped spinner state: $state (remaining depth: ${#MOLE_SPINNER_STACK[@]})"
# Restore state if needed
if [[ "$state" == running:* ]]; then
# Previous spinner was running - we don't restart it automatically
# This is intentional to avoid UI conflicts
:
fi
return 0
}
# Safe spinner start with stack management
# Usage: safe_start_spinner <message>
safe_start_spinner() {
local message="${1:-Working...}"
# Push current state
push_spinner_state
# Stop any existing spinner
stop_section_spinner 2> /dev/null || true
# Start new spinner
start_section_spinner "$message"
}
# Safe spinner stop with stack management
# Usage: safe_stop_spinner
safe_stop_spinner() {
# Stop current spinner
stop_section_spinner 2> /dev/null || true
# Pop previous state
pop_spinner_state || true
}
# ============================================================================
# Terminal Compatibility Checks
# ============================================================================
# Check if terminal supports ANSI escape codes
# Usage: is_ansi_supported
# Returns: 0 if supported, 1 if not
is_ansi_supported() {
# Check if running in interactive terminal
[[ -t 1 ]] || return 1
# Check TERM variable
[[ -n "${TERM:-}" ]] || return 1
# Check for known ANSI-compatible terminals
case "$TERM" in
xterm* | vt100 | vt220 | screen* | tmux* | ansi | linux | rxvt* | konsole*)
return 0
;;
dumb | unknown)
return 1
;;
*)
# Check terminfo database if available
if command -v tput > /dev/null 2>&1; then
# Test if terminal supports colors (good proxy for ANSI support)
local colors=$(tput colors 2> /dev/null || echo "0")
[[ "$colors" -ge 8 ]] && return 0
fi
return 1
;;
esac
}
# Get terminal capability info
# Usage: get_terminal_info
get_terminal_info() {
local info="Terminal: ${TERM:-unknown}"
if is_ansi_supported; then
info+=" (ANSI supported)"
if command -v tput > /dev/null 2>&1; then
local cols=$(tput cols 2> /dev/null || echo "?")
local lines=$(tput lines 2> /dev/null || echo "?")
local colors=$(tput colors 2> /dev/null || echo "?")
info+=" ${cols}x${lines}, ${colors} colors"
fi
else
info+=" (ANSI not supported)"
fi
echo "$info"
}
# Validate terminal environment before running
# Usage: validate_terminal_environment
# Returns: 0 if OK, 1 with warning if issues detected
validate_terminal_environment() {
local warnings=0
# Check if TERM is set
if [[ -z "${TERM:-}" ]]; then
log_warning "TERM environment variable not set"
((warnings++))
fi
# Check if running in a known problematic terminal
case "${TERM:-}" in
dumb)
log_warning "Running in 'dumb' terminal - limited functionality"
((warnings++))
;;
unknown)
log_warning "Terminal type unknown - may have display issues"
((warnings++))
;;
esac
# Check terminal size if available
if command -v tput > /dev/null 2>&1; then
local cols=$(tput cols 2> /dev/null || echo "80")
if [[ "$cols" -lt 60 ]]; then
log_warning "Terminal width ($cols cols) is narrow - output may wrap"
((warnings++))
fi
fi
# Report compatibility
if [[ $warnings -eq 0 ]]; then
debug_log "Terminal environment validated: $(get_terminal_info)"
return 0
else
debug_log "Terminal compatibility warnings: $warnings"
return 1
fi
}