feat: new casefy command for case conversion (#3235)

Co-authored-by: sxyazi <sxyazi@gmail.com>

cspell.json

@@ -1 +1 @@
-{"version":"0.2","flagWords":[],"language":"en","words":["Punct","KEYMAP","splitn","crossterm","YAZI","peekable","ratatui","syntect","pbpaste","pbcopy","oneshot","Posix","Lsar","XADDOS","zoxide","cands","Deque","precache","imageops","IFBLK","IFCHR","IFDIR","IFIFO","IFLNK","IFMT","IFSOCK","IRGRP","IROTH","IRUSR","ISGID","ISUID","ISVTX","IWGRP","IWOTH","IWUSR","IXGRP","IXOTH","IXUSR","libc","winsize","TIOCGWINSZ","xpixel","ypixel","ioerr","appender","Catppuccin","macchiato","gitmodules","Dotfiles","bashprofile","vimrc","flac","webp","exiftool","mediainfo","ripgrep","indexmap","indexmap","unwatch","canonicalize","serde","fsevent","Ueberzug","iterm","wezterm","sixel","chafa","ueberzugpp","Konsole","Überzug","pkgs","pdftoppm","poppler","singlefile","jpegopt","EXIF","rustfmt","mktemp","nanos","xclip","xsel","natord","Mintty","nixos","nixpkgs","SIGTSTP","SIGCONT","SIGCONT","mlua","nonstatic","userdata","metatable","natsort","backstack","luajit","Succ","Succ","cand","fileencoding","foldmethod","lightgreen","darkgray","lightred","lightyellow","lightcyan","nushell","msvc","aarch","linemode","sxyazi","rsplit","ZELLIJ","bitflags","bitflags","USERPROFILE","Neovim","vergen","gitcl","Renderable","preloaders","prec","Upserting","prio","Ghostty","Catmull","Lanczos","cmds","unyank","scrolloff","headsup","unsub","uzers","scopeguard","SPDLOG","globset","filetime","magick","magick","prefetcher","Prework","prefetchers","PREWORKERS","conds","translit","rxvt","Urxvt","realpath","realname","REPARSE","hardlink","hardlinking","nlink","nlink","linemodes","SIGSTOP","sevenzip","rsplitn","replacen","DECSET","DECRQM","repeek","cwds","tcsi","Hyprland","Wayfire","SWAYSOCK","btime","nsec","codegen","gethostname","fchmod","fdfind","Rustc","rustc","ffprobe","vframes","luma","obase","outln","errln","tmtheme","twox","cfgs","fstype","objc","rdev","runloop","exfat","rclone","DECRQSS","DECSCUSR","libvterm","Uninit","lockin","rposition","resvg","foldhash","tilded","futs","chdir","hashbrown","JEMALLOC","RUSTFLAGS","RDONLY","GETPATH","fcntl","casefold","inodes","Splatable"]}
+{"language":"en","flagWords":[],"words":["Punct","KEYMAP","splitn","crossterm","YAZI","peekable","ratatui","syntect","pbpaste","pbcopy","oneshot","Posix","Lsar","XADDOS","zoxide","cands","Deque","precache","imageops","IFBLK","IFCHR","IFDIR","IFIFO","IFLNK","IFMT","IFSOCK","IRGRP","IROTH","IRUSR","ISGID","ISUID","ISVTX","IWGRP","IWOTH","IWUSR","IXGRP","IXOTH","IXUSR","libc","winsize","TIOCGWINSZ","xpixel","ypixel","ioerr","appender","Catppuccin","macchiato","gitmodules","Dotfiles","bashprofile","vimrc","flac","webp","exiftool","mediainfo","ripgrep","indexmap","indexmap","unwatch","canonicalize","serde","fsevent","Ueberzug","iterm","wezterm","sixel","chafa","ueberzugpp","Konsole","Überzug","pkgs","pdftoppm","poppler","singlefile","jpegopt","EXIF","rustfmt","mktemp","nanos","xclip","xsel","natord","Mintty","nixos","nixpkgs","SIGTSTP","SIGCONT","SIGCONT","mlua","nonstatic","userdata","metatable","natsort","backstack","luajit","Succ","Succ","cand","fileencoding","foldmethod","lightgreen","darkgray","lightred","lightyellow","lightcyan","nushell","msvc","aarch","linemode","sxyazi","rsplit","ZELLIJ","bitflags","bitflags","USERPROFILE","Neovim","vergen","gitcl","Renderable","preloaders","prec","Upserting","prio","Ghostty","Catmull","Lanczos","cmds","unyank","scrolloff","headsup","unsub","uzers","scopeguard","SPDLOG","globset","filetime","magick","magick","prefetcher","Prework","prefetchers","PREWORKERS","conds","translit","rxvt","Urxvt","realpath","realname","REPARSE","hardlink","hardlinking","nlink","nlink","linemodes","SIGSTOP","sevenzip","rsplitn","replacen","DECSET","DECRQM","repeek","cwds","tcsi","Hyprland","Wayfire","SWAYSOCK","btime","nsec","codegen","gethostname","fchmod","fdfind","Rustc","rustc","ffprobe","vframes","luma","obase","outln","errln","tmtheme","twox","cfgs","fstype","objc","rdev","runloop","exfat","rclone","DECRQSS","DECSCUSR","libvterm","Uninit","lockin","rposition","resvg","foldhash","tilded","futs","chdir","hashbrown","JEMALLOC","RUSTFLAGS","RDONLY","GETPATH","fcntl","casefold","inodes","Splatable","casefied"],"version":"0.2"}

yazi-config/preset/keymap-default.toml

@@ -301,9 +301,10 @@ keymap = [
 	{ on = "p", run = "paste",                                             desc = "Paste copied characters after the cursor" },
 	{ on = "P", run = "paste --before",                                    desc = "Paste copied characters before the cursor" },
 
-	# Undo/Redo
-	{ on = "u",     run = "undo", desc = "Undo the last operation" },
-	{ on = "<C-r>", run = "redo", desc = "Redo the last operation" },
+	# Undo/Redo/Casefy
+	{ on = "u",     run = [ "undo", "casefy lower" ], desc = "Undo, or lowercase if in visual mode" },
+	{ on = "U",     run = "casefy upper",             desc = "Uppercase" },
+	{ on = "<C-r>", run = "redo",                     desc = "Redo the last operation" },
 
 	# Help
 	{ on = "~",    run = "help", desc = "Open help" },

yazi-parser/src/input/casefy.rs

@@ -0,0 +1,25 @@
+use mlua::{ExternalError, FromLua, IntoLua, Lua, Value};
+use yazi_shared::event::CmdCow;
+
+#[derive(Debug)]
+pub struct CasefyOpt {
+	pub upper: bool,
+}
+
+impl From<CmdCow> for CasefyOpt {
+	fn from(c: CmdCow) -> Self { Self { upper: c.str(0) == "upper" } }
+}
+
+impl FromLua for CasefyOpt {
+	fn from_lua(_: Value, _: &Lua) -> mlua::Result<Self> { Err("unsupported".into_lua_err()) }
+}
+
+impl IntoLua for CasefyOpt {
+	fn into_lua(self, _: &Lua) -> mlua::Result<Value> { Err("unsupported".into_lua_err()) }
+}
+
+impl CasefyOpt {
+	pub fn transform(&self, s: &str) -> String {
+		if self.upper { s.to_ascii_uppercase() } else { s.to_ascii_lowercase() }
+	}
+}

yazi-parser/src/input/mod.rs

@@ -1 +1 @@
-yazi_macro::mod_flat!(backspace backward close complete delete forward insert kill paste r#move show);
+yazi_macro::mod_flat!(backspace backward casefy close complete delete forward insert kill paste r#move show);

yazi-widgets/src/input/commands/casefy.rs

@@ -0,0 +1,31 @@
+use std::ops::Range;
+
+use anyhow::Result;
+use yazi_macro::{act, render, succ};
+use yazi_parser::input::CasefyOpt;
+use yazi_shared::data::Data;
+
+use crate::input::{Input, op::InputOp};
+
+impl Input {
+	pub fn casefy(&mut self, opt: CasefyOpt) -> Result<Data> {
+		let snap = self.snap_mut();
+		if !matches!(snap.op, InputOp::Select(_)) {
+			succ!();
+		}
+
+		let range = snap.op.range(snap.cursor, true).unwrap();
+		let Range { start, end } = snap.idx(range.start)..snap.idx(range.end);
+
+		let (start, end) = (start.unwrap(), end.unwrap());
+		let casefied = opt.transform(&snap.value[start..end]);
+
+		snap.value.replace_range(start..end, &casefied);
+		snap.op = InputOp::None;
+		snap.cursor = range.start;
+		self.snaps.tag(self.limit).then(|| self.flush_value());
+
+		act!(r#move, self)?;
+		succ!(render!());
+	}
+}

yazi-widgets/src/input/commands/commands.rs

@@ -35,6 +35,8 @@ impl Input {
 
 				on!(undo);
 				on!(redo);
+
+				on!(casefy);
 			}
 			InputMode::Insert => {
 				on!(visual);

yazi-widgets/src/input/commands/mod.rs

@@ -1 +1 @@
-yazi_macro::mod_flat!(backspace backward commands complete delete escape forward insert kill paste r#move r#type redo replace undo visual yank);
+yazi_macro::mod_flat!(backspace backward casefy commands complete delete escape forward insert kill paste r#move r#type redo replace undo visual yank);

yazi-widgets/src/input/commands/undo.rs

@@ -3,10 +3,14 @@ use yazi_macro::{act, render, succ};
 use yazi_parser::VoidOpt;
 use yazi_shared::data::Data;
 
-use crate::input::{Input, InputMode};
+use crate::input::{Input, InputMode, InputOp};
 
 impl Input {
 	pub fn undo(&mut self, _: VoidOpt) -> Result<Data> {
+		if self.snap().op != InputOp::None {
+			succ!();
+		}
+
 		if !self.snaps.undo() {
 			succ!();
 		}