Added cdz check parameter for use in multicd (normal cd, squash cd and cdz).

Consolidated all squash functionality into a binary (squasher)
Updated the 'cd' alias (multicd).
Added -e to ldrc (to edit the user scripts)

cdz

@@ -1,57 +1,122 @@
 #!/usr/bin/env bash
-# Usage: cdz <archive>
+# Usage: cdz [--check] <archive>
 
-if [[ $LD_INTERNAL -ne 1 ]]; then
+if [[ $LD_INTERNAL -ne 1 ]]
+then
   LD_INTERNAL=1
   . $(dirname $(realpath $0))/daisy.source
 fi
 
+is_archive()
+{
+  local file="$1"
+  local mime_type=$(file --mime-type -b "$file")
+  
+  if [[ $mime_type == *"tar"* || $file == *.tar* || $mime_type == "application/zip" || $mime_type == "application/x-rar" ]]
+  then
+    return 0
+  fi
+  
+  if command -v archivemount >/dev/null 2>&1
+  then
+    local test_dir=$(mktemp -d /tmp/cdz_check.XXXXXXXX)
+    local result=1
+    if archivemount -o readonly "$file" "$test_dir" >/dev/null 2>&1
+    then
+      result=0
+      umount "$test_dir"
+    fi
+    rmdir "$test_dir"
+    return $result
+  fi
+  
+  return 1
+}
+
+check_mode=0
+if [[ "$1" == "--check" ]]
+then
+  check_mode=1
+  shift
+fi
+
 target=$1
-if [[ -z "$target" ]]; then
-  echo "No target specified."
+if [[ -z "$target" ]]
+then
+  if [[ $check_mode -eq 0 ]]
+  then
+    echo "No target specified."
+  fi
   exit 1
 fi
 
-if [[ ! -f "$target" ]]; then
-  echo "File not found: \"$target\""
+if [[ ! -f "$target" ]]
+then
+  if [[ $check_mode -eq 0 ]]
+  then
+    echo "File not found: \"$target\""
+  fi
   exit 2
 fi
 
 target_abs=$(realpath "$target")
 name=$(basename "$target")
 
+if is_archive "$target_abs"
+then
+  if [[ $check_mode -eq 1 ]]
+  then
+    exit 0
+  fi
+else
+  if [[ $check_mode -eq 1 ]]
+  then
+    exit 1
+  fi
+  mime_type=$(file --mime-type -b "$target_abs")
+  echo "Unsupported archive type: $mime_type"
+  exit 1
+fi
+
+# Proceed with extraction
 has_archivemount=$(command -v archivemount >/dev/null 2>&1; echo $?)
 
-if [[ $has_archivemount -eq 0 && $NO_ARCHIVEMOUNT -ne 1 ]]; then
+if [[ $has_archivemount -eq 0 && $NO_ARCHIVEMOUNT -ne 1 ]]
+then
   use_mounter=1
 else
   use_mounter=0
 fi
 
-mime_type=$(file --mime-type -b "$target")
-
+mime_type=$(file --mime-type -b "$target_abs")
 comm1=(:)
 comm2=(echo "Unsupported archive type: $mime_type")
 comm3=(:)
 comm4=(:)
 comm5=(:)
 
-if [[ $use_mounter -eq 1 ]]; then
+if [[ $use_mounter -eq 1 ]]
+then
   echo "Using archivemount..."
   comm2=(archivemount -o allow_root,use_ino "$target_abs")
   comm4=(cd ..)
   comm5=(umount)
-elif [[ $mime_type == *"tar"* || $target == *.tar* ]]; then
+elif [[ $mime_type == *"tar"* || $target_abs == *.tar* ]]
+then
   comm2=(tar xvf "$target_abs" -C)
-elif [[ $mime_type == "application/zip" ]]; then
-  if command -v unzip >/dev/null 2>&1; then
+elif [[ $mime_type == "application/zip" ]]
+then
+  if command -v unzip >/dev/null 2>&1
+  then
     comm2=(unzip -q "$target_abs" -d)
   else
     comm1=(echo "unzip is missing")
     comm3=(exit 1)
   fi
-elif [[ $mime_type == "application/x-rar" ]]; then
-  if command -v unrar >/dev/null 2>&1; then
+elif [[ $mime_type == "application/x-rar" ]]
+then
+  if command -v unrar >/dev/null 2>&1
+  then
     # unrar needs the directory as the last argument
     comm2=(unrar x -idq "$target_abs")
   else
@@ -63,7 +128,8 @@ fi
 dir=$(mktemp -d /tmp/extracted.XXXXXXXX)
 
 "${comm1[@]}"
-if [[ ${comm2[0]} == "unrar" ]]; then
+if [[ ${comm2[0]} == "unrar" ]]
+then
   "${comm2[@]}" "$dir"
 else
   "${comm2[@]}" "$dir"