Updated with some cleaner behavior for PICK and added SPIN. Also removed
command line flags in favor of manually using `tput rmcup`. Updated the documentation.
This commit is contained in:
parent
86c8bed803
commit
5a5f9afa05
21
Makefile
21
Makefile
@ -4,9 +4,7 @@ CC=gcc
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CFLAGS=-O0 -std=gnu99 -D_XOPEN_SOURCE=500 -D_GNU_SOURCE -D_POSIX_C_SOURCE=200809L
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CWARN= -Wall -Wpedantic -Wno-unknown-pragmas -fsanitize=address -fno-omit-frame-pointer
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G=-g
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PICK=
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ASK=
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ASKECHO=
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PICKER=
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ifeq ($(shell uname),Darwin)
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CFLAGS += -D_DARWIN_C_SOURCE
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@ -16,24 +14,17 @@ endif
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ifneq (, $(shell which ask))
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ifeq (, $(ASKECHO)$(ASK))
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ASKECHO="ask --prompt=\"" prompt "\" --query=\"" initial "\""
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CFLAGS += -D'ASKECHO(prompt,initial)="ask --prompt=\"" prompt "\" --query=\"" initial "\""'
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endif
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ifeq (, $(PICK))
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PICK="ask --prompt=\"" prompt "\" --query=\"" initial "\""
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ifeq (, $(PICKER))
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PICKER=ask
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endif
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endif
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ifneq (, $(ASKECHO))
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CFLAGS += -D'ASKECHO(prompt,initial)=$(ASKECHO)'
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ifneq (, $(PICKER))
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CFLAGS += -D'PICK(prompt, initial)="$(PICKER) --prompt=\"" prompt "\" --query=\"" initial "\""'
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endif
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ifneq (, $(ASK))
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CFLAGS += -D'ASK(var,prompt,initial)=$(ASK)'
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endif
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ifneq (, $(PICK))
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CFLAGS += -D'PICK(prompt, initial)=$(PICK)'
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endif
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all: $(NAME)
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101
README.md
101
README.md
@ -8,22 +8,81 @@
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- Without any build dependencies other than the C standard library (no ncurses)
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- A good proof-of-concept for making a TUI from scratch
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The core idea behind `bb` is that almost all actions are performed by piping
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selected files to external scripts, rather than having the file manager itself
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try to anticipate and hard-code every possible user action. Unix tools are very
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good at doing file management, the thing that `bb` adds is immediate visual
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feedback and rapid navigation.
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## Building
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No dependencies, just:
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For example, instead of using `ls`, then `rm` and typing out file names, you can
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just open `bb`, scroll through the list of files, select the ones you want to
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delete, and hit `D`. The `D` key's behavior is defined in a single line of code
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in `config.h` as passing the selected files as arguments to `rm -rf "$@"`.
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That's it! If you want to add a mapping to upload files to your server, you can
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just add a binding for `scp user@example.com:~/ "$@"`. Want to zip files? Add
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a mapping for `read -p "Archive: " name && zip "$name" "$@"` or, if you have
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some complicated one-time task, you can just hit `>` to drop to a shell and run
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commands with the selected files available in `$@` (or use `|` to run a quick
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one-liner command that gets the selected files piped as input).
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`make`
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`sudo make install`
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## Usage
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Run `bb` to launch the file browser. `bb` also has the flags:
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- `-d`: when `bb` exits successfully, print the directory `bb` was browsing.
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- `-s`: when `bb` exits successfully, print the files that were selected.
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- `-0`: use NULL-terminated strings instead of newline-separated strings with
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the `-s` flag.
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Within `bb`, press `?` for a full list of available key bindings. In short:
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`h`/`j`/`k`/`l` or arrow keys for navigation, `q` to quit, `<space>` to toggle
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selection, `d` to delete, `c` to copy, `M` to move, `r` to rename, `n` to
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create a new file, `N` to create a new directory, `:` to run a command with the
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selected files in `$@`, and `|` to pipe files to a command. Pressing `Ctrl-c`
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will cause `bb` to exit with a failure status and without printing anything.
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## Using bb to Change Directory
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Applications cannot change the shell's working directory on their own, but you
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can define a shell function that uses the shell's builtin `cd` function on the
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output of `bb -d` (print directory on exit). For bash (sh, zsh, etc.), you can
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put the following function in your `~/.profile` (or `~/.bashrc`, `~/.zshrc`,
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etc.):
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function bcd() { cd "$(bb -d "$@" || pwd)"; }
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For [fish](https://fishshell.com/) (v3.0.0+), you can put this in your
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`~/.config/fish/functions/`:
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function bcd; cd (bb -d $argv || pwd); end
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In both versions, `|| pwd` means the directory will not change if `bb` exits
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with failure (e.g. by pressing `Ctrl-c`).
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## Launching bb with a Keyboard Shortcut
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Using a keyboard shortcut to launch `bb` from the shell is something that is
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handled by your shell. Here are some examples for binding `Ctrl-b` to launch
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`bb` and change directory to `bb`'s directory (using the `bcd` function defined
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above). For sh and bash, put this in your `~/.profile`:
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bind '"\C-b":"bcd\n"'
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For fish, put this in your `~/.config/fish/functions/fish_user_key_bindings.fish`:
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bind \cB 'bcd; commandline -f repaint'
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# bb's Philosophy
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The core idea behind `bb` is that `bb` is a file **browser**, not a file
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**manager**, which means `bb` uses shell scripts to perform all modifications
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to the filesystem (passing selected files as arguments), rather than
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reinventing the wheel by hard-coding operations like `rm`, `mv`, `cp`, `touch`,
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and so on. Shell scripts can be bound to keypresses in config.h (the user's
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version of [the defaults in config.def.h](config.def.h)). For example, `D` is
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bound to `rm -rf "$@"`, which means selecting `file_foo` and `dir_baz`, then
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pressing `D` will cause `bb` to run the shell command `rm -rf file_foo dir_baz`.
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`bb` comes with a bunch of pre-defined bindings for basic actions in
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[config.def.h](config.def.h) (within `bb`, press `?` to see descriptions of the
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bindings), but it's very easy to add new bindings for whatever custom scripts
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you want to run, just add a new entry in `bindings` in config.h with the form
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`{{keys...}, "<shell command>", "<description>"}` The description is shown when
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pressing `?` within `bb`.
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## User Input in Scripts
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If you need user input in a script, you can just use the `read` shell function
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like so: `read -p "Archive: " name && zip "$name" "$@"` However, `read` doesn't
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support a lot of functionality (e.g. using the arrow keys), so I would recommnd
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using [ask](https://bitbucket.org/spilt/ask) instead. If you have `ask`
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isntalled, making `bb` will automatically detect it and the default key
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bindings will use it instead of `read`.
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## API
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`bb` also exposes an API so that programs can modify `bb`'s internal state.
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@ -44,18 +103,6 @@ code for ncurses. I hope anyone checking out this project can see it as a great
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example of how you can build a full TUI without ncurses or any external
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libraries as long as you're willing to hand-write a few escape sequences.
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## Building
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`make`
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`sudo make install`
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## Usage
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Just run `bb` to launch the file browser. Press `?` for a full list of
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available key bindings. In short: `h`/`j`/`k`/`l` or arrow keys for navigation,
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`q` to quit, `<space>` to toggle selection, `d` to delete, `c` to copy, `M` to
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move, `r` to rename, `n` to create a new file, `N` to create a new directory,
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and `|` to pipe files to a command.
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## Hacking
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9
bb.c
9
bb.c
@ -1042,9 +1042,12 @@ bb_result_t execute_cmd(bb_t *bb, const char *cmd)
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if (!lastslash) return BB_INVALID;
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*lastslash = '\0'; // Split in two
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cd_to(bb, pbuf);
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if (e->index >= 0)
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e = load_entry(bb, lastslash+1);
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if (!e) return BB_INVALID;
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if (IS_VIEWED(e)) {
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set_cursor(bb, e->index);
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if (!IS_VIEWED(e) && !IS_SELECTED(e))
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return BB_OK;
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} else if (!IS_SELECTED(e))
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remove_entry(e);
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return BB_OK;
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}
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@ -1320,8 +1323,6 @@ void bb_browse(bb_t *bb, const char *path)
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goto redraw;
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}
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move_cursor(tty_out, 0, termheight-1);
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if (binding->flags & NORMAL_TERM)
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fputs(T_OFF(T_ALT_SCREEN), tty_out);
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fputs(T_ON(T_SHOW_CURSOR), tty_out);
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close_term();
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run_cmd_on_selection(bb, binding->command);
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201
config.def.h
201
config.def.h
@ -1,19 +1,22 @@
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/*
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BB Key Bindings
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BB Configuration, Startup Commands, and Key Bindings
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User-defined key bindings go in config.h, which is created by running `make`
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User customization goes in config.h, which is created by running `make`
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(config.def.h is for keeping the defaults around, just in case)
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The basic structure is:
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<list of keys to bind>
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<program to run>
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<description> (for the help menu)
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<flags> (whether to run in a full terminal window or silently, etc.)
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This file contains:
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- Global options, like which colors are used
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- Column formatting (width and title)
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- Startup commands
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- User key bindings
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When the scripts are run, the following values are provided as environment variables:
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For startup commands and key bindings, the following values are provided as
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environment variables:
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$@ (the list of arguments): the full paths of the selected files
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$BBCURSOR: the full name of the file under the cursor
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$@ (the list of arguments): the full paths of the selected files, or if
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no files are selected, the full path of the file under the cursor
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$BBCURSOR: the full path of the file under the cursor
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$BBSELECTED: "1" if any files are selected, otherwise ""
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$BB_DEPTH: the number of `bb` instances deep (in case you want to run a
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shell and have that shell print something special in the prompt)
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$BBCMD: a file to which `bb` commands can be written (used internally)
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@ -40,65 +43,33 @@
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spread:<num*> Spread the selection state at the cursor
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toggle:<filename> Toggle the selection status of <filename>
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Internally, bb will write the commands (NUL terminated) to $BBCMD, if
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$BBCMD is set, and read the file when file browsing resumes. These commands
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can also be passed to bb at startup, and will run immediately.
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E.g. `bb +col:n +sort:r .` will launch `bb` only showing the name column, randomly sorted.
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*Note: for numeric-based commands (like scroll), the number can be either
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Note: for numeric-based commands (like scroll), the number can be either
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an absolute value or a relative value (starting with '+' or '-'), and/or
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a percent (ending with '%'). Scrolling and moving, '%' means percent of
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screen height, and '%n' means percent of number of files (e.g. +50% means
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half a screen height down, and 100%n means the last file)
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Internally, bb will write the commands (NUL terminated) to $BBCMD, if
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$BBCMD is set, and read the file when file browsing resumes. These commands
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can also be passed to bb at startup, and will run immediately.
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E.g. `bb '+col:n' '+sort:+r' .` will launch `bb` only showing the name column, randomly sorted.
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As a shorthand and performance optimization, commands that don't rely on any
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shell variables or scripting can be written as "+move:+1" instead of "bb '+move:+1'",
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which is a bit faster because internally it avoids writing to and reading from
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the $BBCMD file.
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*/
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#include "bterm.h"
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// Configurable options:
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#define KEY_DELAY 50
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#define SCROLLOFF MIN(5, (termheight-4)/2)
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#define CMDFILE_FORMAT "/tmp/bb.XXXXXX"
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#define SORT_INDICATOR "↓"
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#define RSORT_INDICATOR "↑"
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#define SELECTED_INDICATOR " \033[31;7m \033[0m"
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#define NOT_SELECTED_INDICATOR " "
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#define TITLE_COLOR "\033[37;1m"
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#define NORMAL_COLOR "\033[37m"
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#define CURSOR_COLOR "\033[43;30;1m"
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#define LINK_COLOR "\033[35m"
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#define DIR_COLOR "\033[34m"
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#define EXECUTABLE_COLOR "\033[31m"
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#define PAUSE " read -n1 -p '\033[2mPress any key to continue...\033[0m\033[?25l'"
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#ifndef ASK
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#ifdef ASKECHO
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#define ASK(var, prompt, initial) var "=\"$(" ASKECHO(prompt, initial) ")\""
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#else
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#define ASK(var, prompt, initial) "read -p \"" prompt "\" " var
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#endif
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#endif
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|
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#ifndef ASKECHO
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#define ASKECHO(prompt, initial) ASK("REPLY", prompt, initial) " && echo \"$REPLY\""
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#endif
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#ifndef PICK
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#define PICK(prompt, initial) "true && " ASKECHO(prompt, initial)
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#endif
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#define NORMAL_TERM (1<<0)
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|
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// Constants:
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#define MAX_REBINDINGS 8
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|
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// Types:
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typedef struct {
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int keys[MAX_REBINDINGS+1];
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const char *command;
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const char *description;
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int flags;
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} binding_t;
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typedef struct {
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@ -106,23 +77,68 @@ typedef struct {
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const char *name;
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} column_t;
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// Configurable options:
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#define KEY_DELAY 50
|
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#define SCROLLOFF MIN(5, (termheight-4)/2)
|
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#define CMDFILE_FORMAT "/tmp/bb.XXXXXX"
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#define SORT_INDICATOR "↓"
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#define RSORT_INDICATOR "↑"
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#define SELECTED_INDICATOR " \033[31;7m \033[0m"
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#define NOT_SELECTED_INDICATOR " "
|
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// Colors (using ANSI escape sequences):
|
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#define TITLE_COLOR "\033[37;1m"
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#define NORMAL_COLOR "\033[37m"
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#define CURSOR_COLOR "\033[43;30;1m"
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#define LINK_COLOR "\033[35m"
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#define DIR_COLOR "\033[34m"
|
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#define EXECUTABLE_COLOR "\033[31m"
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||||
|
||||
// Some handy macros for common shell script behaviors:
|
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#define PAUSE " read -n1 -p '\033[2mPress any key to continue...\033[0m\033[?25l'"
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||||
|
||||
// Bold text:
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||||
#define B(s) "\033[1m" s "\033[22m"
|
||||
|
||||
// Macros for getting user input:
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#ifndef ASK
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#ifdef ASKECHO
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#define ASK(var, prompt, initial) var "=\"$(" ASKECHO(prompt, initial) ")\""
|
||||
#else
|
||||
#define ASK(var, prompt, initial) "read -p \"" prompt "\" " var " </dev/tty >/dev/tty"
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#ifndef ASKECHO
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||||
#define ASKECHO(prompt, initial) ASK("REPLY", prompt, initial) " && echo \"$REPLY\""
|
||||
#endif
|
||||
|
||||
// Get user input to choose an option (piped in). If you want to use
|
||||
// a fuzzy finder like fzy or fzf, then this should be something like:
|
||||
// "fzy --prompt=\"" prompt "\" --query=\"" initial "\""
|
||||
#ifndef PICK
|
||||
#define PICK(prompt, initial) "grep -i -m1 \"^$(" ASKECHO(prompt, initial) " | sed 's/./[^&]*[&]/g')\""
|
||||
#endif
|
||||
|
||||
// Display a spinning indicator if command takes longer than 10ms:
|
||||
#ifndef SPIN
|
||||
#define SPIN(cmd) "{ " cmd "; } & " \
|
||||
"pid=$!; "\
|
||||
"spinner='-\\|/'; "\
|
||||
"sleep 0.01; "\
|
||||
"while kill -0 $pid 2>/dev/null; do "\
|
||||
" printf '%c\\033[D' \"$spinner\" >/dev/tty; "\
|
||||
" spinner=\"`echo $spinner | sed 's/\\(.\\)\\(.*\\)/\\2\\1/'`\"; "\
|
||||
" sleep 0.1; "\
|
||||
"done"
|
||||
#endif
|
||||
|
||||
|
||||
// These commands will run at startup (before command-line arguments)
|
||||
extern const char *startupcmds[];
|
||||
extern const column_t columns[128];
|
||||
extern binding_t bindings[];
|
||||
|
||||
const char *startupcmds[] = {
|
||||
//////////////////////////////////////////////
|
||||
// User-defined startup commands can go here
|
||||
//////////////////////////////////////////////
|
||||
// Set some default marks:
|
||||
"+mark:0", "+mark:~=~", "+mark:h=~", "+mark:/=/", "+mark:c=~/.config",
|
||||
"+mark:l=~/.local", "+mark:s=<selection>",
|
||||
// Default column and sorting options:
|
||||
"+sort:+n", "+col:*smpn", "+..",
|
||||
NULL, // NULL-terminated array
|
||||
};
|
||||
|
||||
// Column widths:
|
||||
// Column widths and titles:
|
||||
const column_t columns[128] = {
|
||||
['*'] = {2, "*"},
|
||||
['a'] = {21, " Accessed"},
|
||||
@ -134,17 +150,29 @@ const column_t columns[128] = {
|
||||
['s'] = {9, "Size"},
|
||||
};
|
||||
|
||||
extern binding_t bindings[];
|
||||
#define B(s) "\033[1m" s "\033[22m"
|
||||
// This is a list of commands that runs when `bb` launches:
|
||||
const char *startupcmds[] = {
|
||||
// Set some default marks:
|
||||
"+mark:0", "+mark:~=~", "+mark:h=~", "+mark:/=/", "+mark:c=~/.config",
|
||||
"+mark:l=~/.local", "+mark:s=<selection>",
|
||||
// Default column and sorting options:
|
||||
"+sort:+n", "+col:*smpn", "+..",
|
||||
NULL, // NULL-terminated array
|
||||
};
|
||||
|
||||
/******************************************************************************
|
||||
* These are all the key bindings for bb.
|
||||
* The format is: {{keys,...}, "<script>", "<description>"}
|
||||
*
|
||||
* Please note that these are sh scripts, not bash scripts, so bash-isms
|
||||
* won't work unless you make your script use `bash -c "<your bash script>"`
|
||||
*
|
||||
* If your editor is vim (and not neovim), you can replace `$EDITOR` below with
|
||||
* `vim -c 'set t_ti= t_te=' "$@"` to prevent momentarily seeing the shell
|
||||
* after editing.
|
||||
*****************************************************************************/
|
||||
binding_t bindings[] = {
|
||||
/*************************************************************************
|
||||
* User-defined custom scripts can go here
|
||||
* Format is: {{keys}, "script", "help text", flags}
|
||||
*
|
||||
* Please note that these are sh scripts, not bash scripts, so bash-isms
|
||||
* won't work unless you make your script use `bash -c "<your script>"`
|
||||
************************************************************************/
|
||||
{{'?', KEY_F1}, "bb -b | $PAGER -r", B("Help")" menu", NORMAL_TERM},
|
||||
{{'?', KEY_F1}, "bb -b | $PAGER -rX", B("Help")" menu"},
|
||||
{{'q', 'Q'}, "+quit", B("Quit")},
|
||||
{{'j', KEY_ARROW_DOWN}, "+move:+1", B("Next")" file"},
|
||||
{{'k', KEY_ARROW_UP}, "+move:-1", B("Previous")" file"},
|
||||
@ -161,18 +189,19 @@ binding_t bindings[] = {
|
||||
"elif file -bi \"$BBCURSOR\" | grep '^\\(text/\\|inode/empty\\)' >/dev/null; then $EDITOR \"$BBCURSOR\"; "
|
||||
"else xdg-open \"$BBCURSOR\"; fi",
|
||||
#endif
|
||||
B("Open")" file/directory", NORMAL_TERM},
|
||||
B("Open")" file/directory"},
|
||||
{{' ','v','V'}, "+toggle", B("Toggle")" selection"},
|
||||
{{KEY_ESC}, "+deselect:*", B("Clear")" selection"},
|
||||
{{'e'}, "$EDITOR \"$@\" || "PAUSE, B("Edit")" file in $EDITOR", NORMAL_TERM},
|
||||
{{'e'}, "$EDITOR \"$@\" || "PAUSE, B("Edit")" file in $EDITOR"},
|
||||
{{KEY_CTRL_F}, "bb \"+g:`find | "PICK("Find: ", "")"`\"", B("Search")" for file"},
|
||||
{{'/'}, "bb \"+g:`ls -a | "PICK("Pick: ", "")"`\"", B("Pick")" file"},
|
||||
{{'/'}, "bb \"+g:`ls -pa | "PICK("Pick: ", "")"`\"", B("Pick")" file"},
|
||||
{{'d', KEY_DELETE}, "rm -rfi \"$@\" && bb '+deselect:*' +r ||" PAUSE, B("Delete")" files"},
|
||||
{{'D'}, "rm -rf \"$@\" && bb '+deselect:*' +r ||" PAUSE, B("Delete")" files (without confirmation)"},
|
||||
{{'M'}, "mv -i \"$@\" . && bb '+deselect:*' +r && for f; do bb \"+sel:`pwd`/`basename \"$f\"`\"; done || "PAUSE,
|
||||
{{'D'}, SPIN("rm -rf \"$@\"")" && bb '+deselect:*' +r ||" PAUSE, B("Delete")" files (without confirmation)"},
|
||||
{{'M'}, SPIN("mv -i \"$@\" .")" && bb '+deselect:*' +r && for f; do bb \"+sel:`pwd`/`basename \"$f\"`\"; done || "PAUSE,
|
||||
B("Move")" files to current directory"},
|
||||
{{'c'}, "cp -ri \"$@\" . && bb +r || "PAUSE, B("Copy")" files to current directory"},
|
||||
{{'C'}, "bb '+de:*' && for f; do cp \"$f\" \"$f.copy\" && bb \"+sel:$f.copy\"; done && bb +r || "PAUSE, B("Clone")" files"},
|
||||
{{'c'}, SPIN("cp -ri \"$@\" .")" && bb +r || "PAUSE, B("Copy")" files to current directory"},
|
||||
{{'C'}, "bb '+de:*' && for f; do "SPIN("cp \"$f\" \"$f.copy\"")" && bb \"+sel:$f.copy\"; done && bb +r || "PAUSE,
|
||||
B("Clone")" files"},
|
||||
{{'n'}, ASK("name", "New file: ", "")" && touch \"$name\" && bb \"+goto:$name\" +r || "PAUSE, B("New file")},
|
||||
{{'N'}, ASK("name", "New dir: ", "")" && mkdir \"$name\" && bb \"+goto:$name\" +r || "PAUSE, B("New directory")},
|
||||
{{KEY_CTRL_G}, "bb \"+cd:`" ASKECHO("Go to directory: ", "") "`\"", B("Go to")" directory"},
|
||||
@ -180,7 +209,7 @@ binding_t bindings[] = {
|
||||
B("Pipe")" selected files to a command"},
|
||||
{{':'}, "sh -c \"`" ASKECHO(":", "") "`\" -- \"$@\"; " PAUSE "; bb +refresh",
|
||||
B("Run")" a command"},
|
||||
{{'>'}, "$SHELL; bb +r", "Open a "B("shell"), NORMAL_TERM},
|
||||
{{'>'}, "tput rmcup >/dev/tty; $SHELL; bb +r", "Open a "B("shell")},
|
||||
{{'m'}, "read -n1 -p 'Mark: ' m && bb \"+mark:$m;$PWD\"", "Set "B("mark")},
|
||||
{{'\''}, "read -n1 -p 'Jump: ' j && bb \"+jump:$j\"", B("Jump")" to mark"},
|
||||
{{'r'},
|
||||
|
||||
Loading…
Reference in New Issue
Block a user