dealing with uniquitity weirdly

unique-file-names.lua

@@ -0,0 +1,56 @@
+#!/usr/bin/env luajit
+
+-- Partially written by ChatGPT using GPT-3.5, with corrections and modifications by me.
+-- Do whatever the hell you want with it.
+
+local lfs = require "lfs"
+
+-- Function to recursively traverse directories, get file paths
+local function traverse_directory(path)
+  local files = {}
+
+  for entry in lfs.dir(path) do
+    if entry ~= "." and entry ~= ".." then
+      local full_path = path..'\\'..entry
+      local attributes = lfs.attributes(full_path)
+
+      if attributes and attributes.mode == "file" then
+        files[path] = true
+
+      elseif attributes and attributes.mode == "directory" then
+        local subdir_files = traverse_directory(full_path)
+        for path in pairs(subdir_files) do
+          files[path] = true
+        end
+      end
+    end
+  end
+
+  return files
+end
+
+
+
+local paths = {} -- becomes a hashtable of hashtables of full_path = true
+for _, path in ipairs(arg) do
+  -- powershell handles quotes, so I assume each argument is a full valid path
+  paths[path] = traverse_directory(path)
+end
+
+local file_names = {} -- a hashtable of unique file names, numerical values indicating how many times the file name exists
+for path_start, full_path_table in pairs(paths) do
+  for path in pairs(full_path_table) do
+    local current_name = path:match("^[.+\\]*(.+)$") -- not sure if this is correct :D
+    if file_names[current_name] then
+      file_names[current_name] = file_names[current_name] + 1
+    else
+      file_names[current_name] = 1
+    end
+  end
+end
+
+for current_name, occurrences in pairs(file_names) do
+  if occurrences ~= 1 then
+    print(current_name .. " occurs " .. occurrences .. " times!")
+  end
+end

unique-file-paths.lua

@@ -0,0 +1,70 @@
+#!/usr/bin/env luajit
+
+-- Partially written by ChatGPT using GPT-3.5, with corrections and modifications by me.
+-- Do whatever the hell you want with it.
+
+-- Note: For some reason, "." is always detected as a duplicated path in all directories selected.
+
+local lfs = require "lfs"
+
+-- Function to recursively traverse directories, get file paths
+local function traverse_directory(path)
+  local files = {}
+
+  for entry in lfs.dir(path) do
+    if entry ~= "." and entry ~= ".." then
+      local full_path = path..'\\'..entry
+      local attributes = lfs.attributes(full_path)
+
+      if attributes and attributes.mode == "file" then
+        files[path] = true
+
+      elseif attributes and attributes.mode == "directory" then
+        local subdir_files = traverse_directory(full_path)
+        for path in pairs(subdir_files) do
+          files[path] = true
+        end
+      end
+    end
+  end
+
+  return files
+end
+
+
+
+local paths = {} -- becomes a hashtable of hashtables of full_path = true
+for _, path in ipairs(arg) do
+  -- powershell handles quotes, so I assume each argument is a full valid path
+  paths[path] = traverse_directory(path)
+end
+
+local subpaths = {} -- a hashtable of all unique subpaths
+for path_start, full_path_table in pairs(paths) do
+  for path in pairs(full_path_table) do
+    local local_path = "." .. path:sub(#path_start + 1)
+    subpaths[local_path] = true
+  end
+end
+
+for subpath in pairs(subpaths) do
+  local known_paths = {}
+  local paths_found = 0
+  for path_start, full_path_table in pairs(paths) do
+    local global_path = path_start .. subpath:sub(2)
+    if full_path_table[global_path] then
+      paths_found = paths_found + 1
+      known_paths[global_path] = true
+    end
+  end
+  if paths_found == 1 then
+    -- print("UNIQUE: " .. next(known_paths))
+    local _ = nil
+  else
+    local output_text = {}
+    for global_path in pairs(known_paths) do
+      table.insert(output_text, global_path)
+    end
+    print(subpath .. " exists " .. paths_found .." times!\n" .. table.concat(output_text, "\n")) -- the extra \n at the end is kept intentionally
+  end
+end

unique-files.lua

@@ -86,9 +86,8 @@ for subpath in pairs(subpaths) do
     for global_path, size in pairs(sizes) do
       table.insert(output_text, global_path .. ": " .. size .. " bytes")
     end
-    print(subpath .. " has different sizes!\n" .. table.concat(output_text,"\n") .. "\n")
+    print(subpath .. " has different sizes!\n" .. table.concat(output_text,"\n")) -- the extra \n at the end is kept intentionally
   elseif paths_checked < 2 then
-    -- print(subpath .. " is unique!\n" .. next(sizes) .. "\n")
+    print("UNIQUE: " .. next(sizes))
-    print(next(sizes) .. " is unique!\n")
   end
 end