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--@description: pmc - pack-my-code, a minimalist code context packaging tool
--@author: WaterRun
--@file: pmc.lua
--@date: 2026-03-08
--@updated: 2026-04-28
-- =============================================================================
-- Type annotations
-- =============================================================================
---@class PmcOptions
---@field target_dir string
---@field exclude_patterns string[]
---@field include_patterns string[]
---@field ignore_gitignore boolean
---@field with_tree boolean
---@field with_stats boolean
---@field wrap_mode "md"|"nil"|"block"
---@field path_mode "relative"|"name"|"absolute"
---@field yaml_mode boolean
---@field output_file string|nil
---@field clipboard boolean
---@field show_version boolean
---@field show_help boolean
---@field user_set_t boolean
---@field user_set_s boolean
---@field user_set_w boolean
---@field user_set_p boolean
---@class FileItem
---@field abs_path string
---@field rel_target string
---@field display_path string
---@field content string
---@field line_count integer
---@field ext_key string
---@field lang string
---@class TreeNode
---@field name string
---@field kind "dir"|"file"
---@field order integer
---@field rel_path string|nil
---@field children table<string,TreeNode>|nil
---@field files table<string,TreeNode>|nil
-- =============================================================================
-- Constants
-- =============================================================================
local VERSION = "3"
local MAX_FILE_SIZE = 1024 * 1024 -- 1 MB
local DIR_SEP = package.config:sub(1, 1)
local IS_WINDOWS = (DIR_SEP == "\\")
local WRITE_CHUNK_SIZE = 4096
-- =============================================================================
-- Lookup tables
-- =============================================================================
--@description: known no-extension filenames for stats grouping
local KNOWN_NO_EXT = {
["makefile"] = true,
["gnumakefile"] = true,
["dockerfile"] = true,
["containerfile"] = true,
["vagrantfile"] = true,
["jenkinsfile"] = true,
["readme"] = true,
["license"] = true,
["copying"] = true,
["changelog"] = true,
["authors"] = true,
["contributors"] = true,
["gemfile"] = true,
["rakefile"] = true,
["guardfile"] = true,
["procfile"] = true,
["brewfile"] = true,
["cmakelists.txt"] = true,
}
--@description: binary file extensions - skip without reading content
local BINARY_EXTENSIONS = {}
do
local exts = {
".png", ".jpg", ".jpeg", ".gif", ".bmp", ".ico", ".webp",
".tiff", ".tga", ".psd", ".ai", ".eps", ".svg",
".mp3", ".mp4", ".wav", ".avi", ".mov", ".mkv", ".flv",
".ogg", ".flac", ".aac", ".wma", ".wmv", ".m4a", ".m4v",
".zip", ".tar", ".gz", ".bz2", ".xz", ".7z", ".rar", ".zst",
".exe", ".dll", ".so", ".dylib", ".o", ".obj", ".a", ".lib",
".pdf", ".doc", ".docx", ".xls", ".xlsx", ".ppt", ".pptx",
".wasm", ".class", ".pyc", ".pyo", ".elc",
".ttf", ".otf", ".woff", ".woff2", ".eot",
".sqlite", ".db", ".mdb", ".ldb",
".jar", ".war", ".ear", ".apk", ".ipa", ".deb", ".rpm",
".iso", ".dmg", ".img", ".bin", ".dat",
".min.js", ".min.css",
}
for _, ext in ipairs(exts) do
BINARY_EXTENSIONS[ext] = true
end
end
--@description: language detection by file extension
local LANG_BY_EXT = {
[".lua"] = "lua",
[".py"] = "python",
[".pyw"] = "python",
[".pyi"] = "python",
[".js"] = "javascript",
[".mjs"] = "javascript",
[".cjs"] = "javascript",
[".ts"] = "typescript",
[".mts"] = "typescript",
[".cts"] = "typescript",
[".jsx"] = "jsx",
[".tsx"] = "tsx",
[".sh"] = "bash",
[".bash"] = "bash",
[".zsh"] = "zsh",
[".fish"] = "fish",
[".rb"] = "ruby",
[".erb"] = "erb",
[".go"] = "go",
[".rs"] = "rust",
[".c"] = "c",
[".h"] = "c",
[".cpp"] = "cpp",
[".cc"] = "cpp",
[".cxx"] = "cpp",
[".hpp"] = "cpp",
[".hxx"] = "cpp",
[".hh"] = "cpp",
[".java"] = "java",
[".cs"] = "csharp",
[".fs"] = "fsharp",
[".fsx"] = "fsharp",
[".php"] = "php",
[".html"] = "html",
[".htm"] = "html",
[".xhtml"] = "html",
[".css"] = "css",
[".scss"] = "scss",
[".less"] = "less",
[".sass"] = "sass",
[".json"] = "json",
[".jsonc"] = "jsonc",
[".json5"] = "json5",
[".xml"] = "xml",
[".xsl"] = "xml",
[".xsd"] = "xml",
[".yaml"] = "yaml",
[".yml"] = "yaml",
[".toml"] = "toml",
[".ini"] = "ini",
[".cfg"] = "ini",
[".conf"] = "ini",
[".sql"] = "sql",
[".md"] = "markdown",
[".markdown"] = "markdown",
[".rst"] = "rst",
[".tex"] = "latex",
[".sty"] = "latex",
[".cls"] = "latex",
[".vue"] = "vue",
[".svelte"] = "svelte",
[".swift"] = "swift",
[".kt"] = "kotlin",
[".kts"] = "kotlin",
[".scala"] = "scala",
[".sc"] = "scala",
[".clj"] = "clojure",
[".cljs"] = "clojure",
[".cljc"] = "clojure",
[".r"] = "r",
[".dart"] = "dart",
[".ex"] = "elixir",
[".exs"] = "elixir",
[".erl"] = "erlang",
[".hrl"] = "erlang",
[".hs"] = "haskell",
[".lhs"] = "haskell",
[".pl"] = "perl",
[".pm"] = "perl",
[".ps1"] = "powershell",
[".psm1"] = "powershell",
[".psd1"] = "powershell",
[".bat"] = "batch",
[".cmd"] = "batch",
[".cmake"] = "cmake",
[".tf"] = "terraform",
[".hcl"] = "hcl",
[".proto"] = "protobuf",
[".graphql"] = "graphql",
[".gql"] = "graphql",
[".txt"] = "text",
[".log"] = "text",
[".env"] = "dotenv",
[".zig"] = "zig",
[".nim"] = "nim",
[".v"] = "v",
[".groovy"] = "groovy",
[".gradle"] = "groovy",
[".m"] = "objectivec",
[".mm"] = "objectivec",
[".d"] = "d",
[".jl"] = "julia",
[".ml"] = "ocaml",
[".mli"] = "ocaml",
[".lisp"] = "lisp",
[".cl"] = "lisp",
[".el"] = "elisp",
[".scm"] = "scheme",
[".rkt"] = "racket",
[".asm"] = "asm",
[".s"] = "asm",
[".glsl"] = "glsl",
[".hlsl"] = "hlsl",
[".wgsl"] = "wgsl",
[".dockerfile"] = "dockerfile",
}
--@description: language detection by special filename
local LANG_BY_NAME = {
["makefile"] = "makefile",
["gnumakefile"] = "makefile",
["dockerfile"] = "dockerfile",
["containerfile"] = "dockerfile",
["vagrantfile"] = "ruby",
["gemfile"] = "ruby",
["rakefile"] = "ruby",
["guardfile"] = "ruby",
["jenkinsfile"] = "groovy",
["cmakelists.txt"] = "cmake",
[".gitignore"] = "gitignore",
[".gitattributes"] = "gitignore",
[".gitmodules"] = "gitignore",
[".dockerignore"] = "gitignore",
[".hgignore"] = "gitignore",
[".editorconfig"] = "ini",
[".env"] = "dotenv",
[".env.local"] = "dotenv",
[".env.development"] = "dotenv",
[".env.production"] = "dotenv",
[".babelrc"] = "json",
[".eslintrc"] = "json",
[".prettierrc"] = "json",
["package.json"] = "json",
["tsconfig.json"] = "json",
["cargo.toml"] = "toml",
["pyproject.toml"] = "toml",
["go.mod"] = "gomod",
["go.sum"] = "gosum",
}
--@description: default exclude patterns applied in -r (raw scan) mode
local DEFAULT_RAW_EXCLUDES = {
".git/", ".svn/", ".hg/",
"node_modules/", "__pycache__/", ".tox/", ".mypy_cache/",
".vscode/", ".idea/", ".vs/",
"*.lock",
}
--@description: lua pattern magic characters
local LUA_MAGIC_CHARS = {
["^"] = true,
["$"] = true,
["("] = true,
[")"] = true,
["%"] = true,
["."] = true,
["["] = true,
["]"] = true,
["+"] = true,
["-"] = true,
["*"] = true,
["?"] = true,
}
-- =============================================================================
-- Utility functions
-- =============================================================================
--@description: fail with standardized error format and exit
local function fail(message)
io.stderr:write(string.format("err:( %s )\n", message))
io.stderr:flush()
os.exit(1)
end
--@description: print warning to stderr
local function warn(message)
io.stderr:write(string.format("warn: %s\n", message))
io.stderr:flush()
end
--@description: trim leading and trailing whitespace
local function trim(s)
return (s:gsub("^%s+", ""):gsub("%s+$", ""))
end
--@description: normalize path separators to forward slash, collapse duplicates
local function normalizePath(p)
local s = p:gsub("\\", "/")
s = s:gsub("/+", "/")
if #s > 1 then
s = s:gsub("/$", "")
end
return s
end
--@description: normalize pattern separators; keep trailing slash semantics
local function normalizePattern(p)
local s = p:gsub("\\", "/")
s = s:gsub("/+", "/")
return s
end
--@description: check whether string starts with prefix
local function startsWith(s, prefix)
return s:sub(1, #prefix) == prefix
end
--@description: check whether string ends with suffix
local function endsWith(s, suffix)
if suffix == "" then return true end
return s:sub(- #suffix) == suffix
end
--@description: split string by literal delimiter
local function splitByChar(s, delim)
local out = {}
local start_i = 1
while true do
local i, j = s:find(delim, start_i, true)
if not i then
table.insert(out, s:sub(start_i))
break
end
table.insert(out, s:sub(start_i, i - 1))
start_i = j + 1
end
return out
end
--@description: extract basename from normalized path
local function baseName(p)
local s = normalizePath(p)
local i = s:match("^.*()/")
if i then return s:sub(i + 1) end
return s
end
--@description: extract file extension including the dot, or nil
local function fileExtension(name)
return name:match("^.+(%.[^%.]+)$")
end
--@description: check if filename has a real extension (not just a leading dot)
local function hasExtension(name)
local i = name:match("^.*()%.")
if not i then return false end
if i == 1 then return false end
return i < #name
end
--@description: convert UTF-8 string to UTF-16 LE bytes with BOM (FF FE).
-- Used for Windows clipboard handoff to clip.exe, which treats stdin as
-- the ANSI code page unless a UTF-16 LE BOM is present.
-- Invalid UTF-8 sequences are replaced with U+FFFD.
local function utf8ToUtf16Le(s)
local out = { "\255\254" } -- BOM: FF FE
local n = #s
local i = 1
while i <= n do
local b1 = s:byte(i)
local cp, advance
if b1 < 0x80 then
cp = b1; advance = 1
elseif b1 < 0xC2 then
cp = 0xFFFD; advance = 1
elseif b1 < 0xE0 then
local b2 = s:byte(i + 1) or 0
if b2 < 0x80 or b2 >= 0xC0 then
cp = 0xFFFD; advance = 1
else
cp = (b1 - 0xC0) * 64 + (b2 - 0x80)
advance = 2
end
elseif b1 < 0xF0 then
local b2 = s:byte(i + 1) or 0
local b3 = s:byte(i + 2) or 0
if b2 < 0x80 or b2 >= 0xC0 or b3 < 0x80 or b3 >= 0xC0 then
cp = 0xFFFD; advance = 1
else
cp = (b1 - 0xE0) * 4096 + (b2 - 0x80) * 64 + (b3 - 0x80)
advance = 3
end
elseif b1 < 0xF5 then
local b2 = s:byte(i + 1) or 0
local b3 = s:byte(i + 2) or 0
local b4 = s:byte(i + 3) or 0
if b2 < 0x80 or b2 >= 0xC0 or b3 < 0x80 or b3 >= 0xC0
or b4 < 0x80 or b4 >= 0xC0 then
cp = 0xFFFD; advance = 1
else
cp = (b1 - 0xF0) * 262144
+ (b2 - 0x80) * 4096
+ (b3 - 0x80) * 64
+ (b4 - 0x80)
advance = 4
end
else
cp = 0xFFFD; advance = 1
end
i = i + advance
if cp < 0x10000 then
local lo = cp % 256
local hi = (cp - lo) / 256
out[#out + 1] = string.char(lo, hi)
else
cp = cp - 0x10000
local hi_s = 0xD800 + math.floor(cp / 1024)
local lo_s = 0xDC00 + (cp % 1024)
local h_lo = hi_s % 256
local h_hi = (hi_s - h_lo) / 256
local l_lo = lo_s % 256
local l_hi = (lo_s - l_lo) / 256
out[#out + 1] = string.char(h_lo, h_hi, l_lo, l_hi)
end
end
return table.concat(out)
end
--@description: build a unique temp file path
local function makeTempPath(suffix)
local dir
if IS_WINDOWS then
dir = os.getenv("TEMP") or os.getenv("TMP")
or os.getenv("USERPROFILE") or "."
else
dir = os.getenv("TMPDIR") or "/tmp"
end
local sep = IS_WINDOWS and "\\" or "/"
local rnd = math.random(1, 999999999)
return string.format("%s%spmc_%d_%d%s",
dir, sep, os.time(), rnd, suffix or ".tmp")
end
-- =============================================================================
-- Safe output writing (chunked to prevent Windows console truncation)
-- =============================================================================
--@description: write string in safe-sized chunks
local function safeWrite(handle, s)
if s == "" then return end
if #s <= WRITE_CHUNK_SIZE then
handle:write(s)
return
end
local pos = 1
while pos <= #s do
local end_pos = pos + WRITE_CHUNK_SIZE - 1
if end_pos > #s then end_pos = #s end
handle:write(s:sub(pos, end_pos))
pos = end_pos + 1
end
end
-- =============================================================================
-- Shell and command utilities
-- =============================================================================
--@description: shell-quote a string for the current platform
local function shellQuote(s)
if IS_WINDOWS then
return "\"" .. s:gsub("\"", "\"\"") .. "\""
end
return "'" .. s:gsub("'", "'\"'\"'") .. "'"
end
--@description: run shell command, capture stdout
local function runCommand(cmd)
local pipe, err = io.popen(cmd, "r")
if not pipe then
return false, "", err or "popen failed"
end
local data = pipe:read("*a") or ""
local ok, why, code = pipe:close()
if ok == nil then
return false, data, code or why or "command failed"
end
return true, data, 0
end
-- =============================================================================
-- Clipboard utilities
-- =============================================================================
--@description: detect Linux clipboard command (Windows handled separately)
local function getLinuxClipboardCommand()
local tools = {
{ cmd = "xclip -selection clipboard", bin = "xclip" },
{ cmd = "xsel --clipboard --input", bin = "xsel" },
{ cmd = "wl-copy", bin = "wl-copy" },
}
for _, t in ipairs(tools) do
local ok = runCommand("which " .. t.bin .. " >/dev/null 2>&1")
if ok then return t.cmd end
end
return nil
end
--@description: write text to Windows clipboard via clip.exe with UTF-16 LE.
-- Avoids ANSI-codepage misinterpretation of UTF-8 multi-byte sequences
-- (a fatal issue on Chinese Windows where CP936/GBK is the default),
-- and avoids io.popen text-mode buffering that truncates large output.
local function writeToClipboardWindows(text)
local utf16 = utf8ToUtf16Le(text)
local tmp_path = makeTempPath(".clip")
local f, err = io.open(tmp_path, "wb")
if not f then
fail("cannot create temp file for clipboard: " .. tostring(err))
end
safeWrite(f, utf16)
f:flush()
f:close()
-- 'clip < file' via os.execute (which uses cmd /c on Windows);
-- NOT wrapped in extra cmd /c "..." to avoid nested-quote breakage.
local cmd = "clip < " .. shellQuote(tmp_path)
local ok = os.execute(cmd)
os.remove(tmp_path)
if ok ~= true and ok ~= 0 then
fail("clipboard write failed (clip.exe)")
end
end
--@description: write text to Linux clipboard via the detected tool
local function writeToClipboardLinux(text)
local cmd = getLinuxClipboardCommand()
if not cmd then
fail("no clipboard tool found (need xclip / xsel / wl-copy)")
end
local pipe = io.popen(cmd, "w")
if not pipe then
fail("cannot open clipboard command: " .. cmd)
end
safeWrite(pipe, text)
local close_ok = pipe:close()
if not close_ok then
fail("clipboard write failed")
end
end
--@description: write text to system clipboard
local function writeToClipboard(text)
if IS_WINDOWS then
writeToClipboardWindows(text)
else
writeToClipboardLinux(text)
end
end
-- =============================================================================
-- Path utilities
-- =============================================================================
--@description: resolve absolute path via shell
local function getAbsolutePath(p)
if IS_WINDOWS then
local cmd = "cd /d " .. shellQuote(p) .. " 2>nul && cd"
local ok, out = runCommand(cmd)
if not ok then fail("cannot resolve absolute path: " .. p) end
local line = trim(out:gsub("\r", ""))
if line == "" then fail("cannot resolve absolute path: " .. p) end
return normalizePath(line)
end
local cmd = "cd " .. shellQuote(p) .. " 2>/dev/null && pwd"
local ok, out = runCommand(cmd)
if not ok then fail("cannot resolve absolute path: " .. p) end
local line = trim(out)
if line == "" then fail("cannot resolve absolute path: " .. p) end
return normalizePath(line)
end
--@description: get current working directory
local function getCwd()
if IS_WINDOWS then
local ok, out = runCommand("cd")
if not ok then fail("cannot get current directory") end
return normalizePath(trim(out:gsub("\r", "")))
end
local ok, out = runCommand("pwd")
if not ok then fail("cannot get current directory") end
return normalizePath(trim(out))
end
--@description: split path into segments
local function splitPathSegments(p)
local segs = {}
for seg in normalizePath(p):gmatch("[^/]+") do
table.insert(segs, seg)
end
return segs
end
--@description: compute relative path from base to target
local function relativePath(base_abs, target_abs)
local base = splitPathSegments(base_abs)
local targ = splitPathSegments(target_abs)
local i = 1
while i <= #base and i <= #targ and base[i] == targ[i] do
i = i + 1
end
local out = {}
for _ = i, #base do table.insert(out, "..") end
for j = i, #targ do table.insert(out, targ[j]) end
if #out == 0 then return "." end
return table.concat(out, "/")
end
--@description: make path relative to target directory
local function toTargetRelative(target_abs, file_abs)
local t = normalizePath(target_abs)
local f = normalizePath(file_abs)
if f == t then return "." end
if startsWith(f, t .. "/") then return f:sub(#t + 2) end
return relativePath(t, f)
end
--@description: format display path according to path mode
local function formatDisplayPath(path_mode, cwd_abs, file_abs)
if path_mode == "absolute" then return normalizePath(file_abs) end
if path_mode == "name" then return baseName(file_abs) end
return relativePath(cwd_abs, normalizePath(file_abs))
end
-- =============================================================================
-- Language detection
-- =============================================================================
--@description: detect programming language from file path
local function detectLang(rel_path)
local name = baseName(rel_path)
local lower_name = name:lower()
-- special filenames first
local special = LANG_BY_NAME[lower_name]
if special then return special end
-- check for .min.js / .min.css compound extensions
if endsWith(lower_name, ".min.js") then return "javascript" end
if endsWith(lower_name, ".min.css") then return "css" end
-- standard extension lookup
local ext = fileExtension(name)
if ext then
local lang = LANG_BY_EXT[ext:lower()]
if lang then return lang end
-- case-sensitive fallback (e.g. .R)
lang = LANG_BY_EXT[ext]
if lang then return lang end
end
return ""
end
-- =============================================================================
-- File inspection
-- =============================================================================
--@description: check if file has a known binary extension
local function isBinaryExtension(rel_path)
local name = baseName(rel_path):lower()
-- check compound extensions first
if endsWith(name, ".min.js") or endsWith(name, ".min.css") then
return true
end
local ext = fileExtension(name)
if not ext then return false end
return BINARY_EXTENSIONS[ext] == true
end
--@description: get file size in bytes, or nil on error
local function getFileSize(abs_path)
local f = io.open(abs_path, "rb")
if not f then return nil end
local size = f:seek("end")
f:close()
return size
end
--@description: read entire file as binary-safe string
local function readFile(abs_path)
local f, err = io.open(abs_path, "rb")
if not f then return nil, err end
local data = f:read("*a")
f:close()
return data or "", nil
end
--@description: heuristic text detection by null-byte sniffing in the first 8KB
local function isTextContent(data)
local check_len = math.min(#data, 8192)
local chunk = data:sub(1, check_len)
return not chunk:find("\0", 1, true)
end
--@description: normalize all line endings to LF
local function normalizeLineEndings(data)
return data:gsub("\r\n", "\n"):gsub("\r", "\n")
end
--@description: count lines in LF-normalized content
local function countLines(content)
if content == "" then return 0 end
local n = 0
for _ in content:gmatch("[^\n]*\n") do
n = n + 1
end
if content:sub(-1) ~= "\n" then
n = n + 1
end
return n
end
--@description: extension key for statistics grouping
local function detectExtKey(rel_path)
local bn = baseName(rel_path)
local lower_bn = bn:lower()
if not hasExtension(bn) then
if KNOWN_NO_EXT[lower_bn] then return "[no_ext:known]" end
return "[no_ext:unknown]"
end
local ext = bn:match("^.+(%.[^%.]+)$")
if not ext then return "[no_ext:unknown]" end
return ext:lower()
end
-- =============================================================================
-- Pattern matching
-- =============================================================================
--@description: escape one lua pattern magic character
local function escapeLuaMagic(ch)
if LUA_MAGIC_CHARS[ch] then return "%" .. ch end
return ch
end
--@description: convert a glob pattern to a lua pattern string
-- Supports: * (any non-slash chars), ** (any chars including slash), ? (single non-slash char)
local function globToLuaPattern(s)
local out = { "^" }
local i = 1
while i <= #s do
local ch = s:sub(i, i)
if ch == "*" then
if s:sub(i + 1, i + 1) == "*" then
-- ** matches everything including /
table.insert(out, ".*")
i = i + 2
-- consume one optional / after **
if i <= #s and s:sub(i, i) == "/" then
-- ** already covers /, so we make the slash optional
table.insert(out, "/?")
i = i + 1
end
else
-- single * matches everything except /
table.insert(out, "[^/]*")
i = i + 1
end
elseif ch == "?" then
table.insert(out, "[^/]")
i = i + 1
else
table.insert(out, escapeLuaMagic(ch))
i = i + 1
end
end
table.insert(out, "$")
return table.concat(out)
end
--@description: check if pattern contains wildcard characters
local function hasWildcard(p)
return p:find("*", 1, true) ~= nil or p:find("?", 1, true) ~= nil
end
--@description: check if a directory segment appears in any parent directory of the path
local function hasPathSegment(rel_path, seg)
local parts = splitByChar(rel_path, "/")
for i = 1, (#parts - 1) do
if parts[i] == seg then return true end
end
return false
end
--@description: match a single include/exclude pattern against a target-relative path
local function matchOnePattern(rel_path, pattern)
local rp = normalizePath(rel_path)
local pt = normalizePattern(pattern)
local is_dir_pattern = endsWith(pt, "/")
local bname = baseName(rp)
-- directory patterns (trailing /) -- match if any ancestor dir matches
if is_dir_pattern then
local d = pt:sub(1, -2)
if d == "" then return false end
local segs = splitByChar(rp, "/")
if #segs < 2 then return false end -- no parent dirs
local has_slash = d:find("/", 1, true) ~= nil
local has_wild = hasWildcard(d)
local lp = has_wild and globToLuaPattern(d) or nil
for j = 1, #segs - 1 do
if has_slash then
-- multi-segment pattern: match as full prefix from root
local prefix = table.concat(segs, "/", 1, j)
if has_wild then
if prefix:match(lp) then return true end
else
if prefix == d then return true end
end
else
-- single-segment pattern: match any single directory name
local seg = segs[j]
if has_wild then
if seg:match(lp) then return true end
else
if seg == d then return true end
end
end
end
return false
end
-- patterns containing / -> match against full relative path
if pt:find("/", 1, true) then
if hasWildcard(pt) then
return rp:match(globToLuaPattern(pt)) ~= nil
end
return rp == pt
end
-- no-slash patterns with wildcards -> match basename, fallback full path
if hasWildcard(pt) then
local lp = globToLuaPattern(pt)
if bname:match(lp) then return true end
return rp:match(lp) ~= nil
end
-- extension shorthand like ".lua"
if startsWith(pt, ".") then
return endsWith(bname:lower(), pt:lower())
end
-- literal name match
return bname == pt or rp == pt
end
--@description: check if any pattern in list matches the path
local function matchPatterns(rel_path, patterns)
for _, p in ipairs(patterns) do
if matchOnePattern(rel_path, p) then return true end
end
return false
end
-- =============================================================================
-- Pattern parsing
-- =============================================================================
--@description: parse comma-separated pattern string into a list
local function parsePatternList(raw)
local patterns = {}
if not raw or raw == "" then return patterns end
local parts = splitByChar(raw, ",")
for _, part in ipairs(parts) do
local p = trim(part)
if p ~= "" then
p = normalizePattern(p)
table.insert(patterns, p)
end
end
return patterns
end
-- =============================================================================
-- Git integration
-- =============================================================================
--@description: check if git is available
local function hasGit()
local ok = runCommand("git --version")
return ok
end
--@description: split null-byte separated string (replaces %z pattern for Lua 5.2+ compat)
local function splitNullSeparated(s)
local items = {}
local start = 1
for i = 1, #s do
if s:byte(i) == 0 then
local item = s:sub(start, i - 1)
if item ~= "" then
table.insert(items, item)
end
start = i + 1
end
end
if start <= #s then
local item = s:sub(start)
if item ~= "" then
table.insert(items, item)
end
end
return items
end
--@description: list tracked + untracked files via git, respecting .gitignore
local function listFilesWithGit(target_abs)
if not hasGit() then
fail("git is required for default mode; use -r to scan directly")
end
local ok_repo, repo_out = runCommand(
"git -C " .. shellQuote(target_abs) .. " rev-parse --show-toplevel"
)
if not ok_repo then
fail("target is not inside a git work tree; use -r to scan directly")
end
local root_abs = normalizePath(trim(repo_out:gsub("\r", "")))
if root_abs == "" then
fail("failed to get git repository root")
end
local target_norm = normalizePath(target_abs)
local rel_target = ""
if target_norm ~= root_abs then
if not startsWith(target_norm, root_abs .. "/") then
fail("target path is outside repository root")
end
rel_target = target_norm:sub(#root_abs + 2)
end
-- On Windows: use newline-separated output to avoid io.popen text-mode 0x1A
-- (NTFS does not allow \n in filenames, so newline split is safe)
-- On Unix: use null-separated output (filenames can contain \n)
local raw_items
if IS_WINDOWS then
local ok_list, list_out = runCommand(
"git -C " .. shellQuote(root_abs) ..
" ls-files --cached --others --exclude-standard --full-name"
)
if not ok_list then
fail("failed to list files through git")
end
raw_items = {}
list_out = list_out:gsub("\r", "")
for line in list_out:gmatch("([^\n]+)") do
table.insert(raw_items, line)
end
else
local ok_list, list_out = runCommand(
"git -C " .. shellQuote(root_abs) ..
" ls-files -z --cached --others --exclude-standard --full-name"
)
if not ok_list then
fail("failed to list files through git")
end
raw_items = splitNullSeparated(list_out)
end
local files = {}
for _, item in ipairs(raw_items) do
local rel_repo = normalizePath(item)
if rel_repo ~= "" then
local dominated = false
if rel_target == "" then
dominated = true
elseif rel_repo == rel_target or startsWith(rel_repo, rel_target .. "/") then
dominated = true
end
if dominated then
table.insert(files, normalizePath(root_abs .. "/" .. rel_repo))
end