cleanup
This commit is contained in:
Gokcehan
parent
c05fc7b299
commit
29c14533dd
274
doc.go
274
doc.go
@ -10,77 +10,85 @@ at https://godoc.org/github.com/gokcehan/lf.
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Reference
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The following commands are provided by lf with default keybindings.
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The following commands are provided by lf with default keybindings:
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up (default "k" and "<up>")
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half-up (default "<c-u>")
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page-up (default "<c-b>")
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down (default "j" and "<down>")
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half-down (default "<c-d>")
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page-down (default "<c-f>")
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updir (default "h" and "<left>")
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open (default "l" and "<right>")
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quit (default "q")
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bot (default "G")
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top (default "gg")
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read (default ":")
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read-shell (default "$")
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read-shell-wait (default "!")
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read-shell-async (default "&")
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search (default "/")
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search-back (default "?")
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toggle (default "<space>")
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invert (default "v")
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yank (default "y")
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clear (default "c")
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delete (default "d")
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put (default "p")
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renew (default "<c-l>")
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up (default "k" and "<up>")
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half-up (default "<c-u>")
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page-up (default "<c-b>")
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down (default "j" and "<down>")
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half-down (default "<c-d>")
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page-down (default "<c-f>")
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updir (default "h" and "<left>")
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open (default "l" and "<right>")
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quit (default "q")
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bot (default "G")
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top (default "gg")
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read (default ":")
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read-shell (default "$")
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read-shell-wait (default "!")
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read-shell-async (default "&")
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search (default "/")
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search-back (default "?")
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toggle (default "<space>")
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invert (default "v")
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yank (default "y")
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clear (default "c")
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delete (default "d")
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put (default "p")
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renew (default "<c-l>")
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The following commands are provided by lf without default keybindings.
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The following commands are provided by lf without default keybindings:
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sync synchronizes yanked/deleted files with server
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echo prints its arguments to the message line
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cd changes working directory to its argument
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push simulate key pushes given in its argument
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sync synchronizes yanked/deleted files with server
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echo prints its arguments to the message line
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cd changes working directory to its argument
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push simulate key pushes given in its argument
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The following options can be used to customize the behavior of lf.
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The following options can be used to customize the behavior of lf:
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dirfirst bool (default on)
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hidden bool (default off)
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preview bool (default on)
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scrolloff int (default 0)
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tabstop int (default 8)
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ifs string (default "") (not exported if empty)
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previewer string (default "") (not filtered if empty)
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shell string (default "$SHELL")
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showinfo string (default "none")
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sortby string (default "natural")
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timefmt string (default "Mon Jan _2 15:04:05 2006")
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ratios string (default "1:2:3")
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dirfirst bool (default on)
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hidden bool (default off)
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preview bool (default on)
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scrolloff int (default 0)
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tabstop int (default 8)
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ifs string (default "") (not exported if empty)
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previewer string (default "") (not filtered if empty)
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shell string (default "$SHELL")
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showinfo string (default "none")
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sortby string (default "natural")
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timefmt string (default "Mon Jan _2 15:04:05 2006")
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ratios string (default "1:2:3")
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The following variables are exported for shell commands.
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The following variables are exported for shell commands:
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$f current file
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$fs marked file(s) separated with ':'
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$fx current file or marked file(s) if any
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$f current file
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$fs marked file(s) separated with ':'
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$fx current file or marked file(s) if any
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Configuration
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The configuration file should either be located in "$XDG_CONFIG_HOME/lf/lfrc"
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or "~/.config/lf/lfrc". A sample configuration file can be found at
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The configuration file should be located at:
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$XDG_CONFIG_HOME/lf/lfrc"
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If "$XDG_CONFIG_HOME" is not set, it defaults to "$HOME/.config" so the
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location should be:
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~/.config/lf/lfrc
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A sample configuration file can be found at
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https://github.com/gokcehan/lf/blob/master/etc/lfrc.example.
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Prefixes
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The following command prefixes are used by lf:
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: read (default)
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$ read-shell
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! read-shell-wait
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& read-shell-async
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/ search
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? search-back
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: read (default) built-in command
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$ read-shell shell command
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! read-shell-wait shell command waiting for key press
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& read-shell-async asynchronous shell command
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/ search search file in current directory
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? search-back search file in the reverse order
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The same evaluator is used for the command line and the configuration file. The
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difference is that prefixes are not necessary in the command line. Instead
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@ -89,26 +97,56 @@ default these modes are mapped to the prefix keys above.
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Syntax
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Characters from "#" to "\n" are comments and ignored.
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Characters from "#" to "\n" are comments and ignored:
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# comments start with '#'
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There are three special commands for configuration.
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"set" is used to set an option which could be bool (e.g. "set hidden", "set
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nohidden", "set hidden!"), int (e.g. "set scrolloff 10"), or string (e.g. "set
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sortby time").
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"set" is used to set an option which could be boolean, integer, or string:
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"map" is used to bind a key to a command which could be built-in command (e.g.
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"map gh cd ~"), custom command (e.g. "map D trash"), or shell command (e.g.
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"map i $less "$f"", "map u !du -h . | less"). You can delete an existing
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binding by leaving the expression empty (e.g. "map gh").
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set hidden # boolean on
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set nohidden # boolean off
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set hidden! # boolean toggle
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set scrolloff 10 # integer value
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set sortby time # string value w/o quotes
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"cmd" is used to define a custom command or delete an existing command by
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leaving the expression empty (e.g. "cmd trash").
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"map" is used to bind a key to a command which could be built-in command,
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custom command, or shell command:
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If there is no prefix then ":" is assumed. An explicit ":" could be provided to
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group statements until a "\n" occurs. This is especially useful for "map" and
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"cmd" commands. If you need multiline you can wrap statements in "{{" and "}}"
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after the proper prefix.
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map gh cd ~ # built-in command
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map D trash # custom command
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map i $less "$f" # shell command
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map u !du -h . # waiting shell command
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You can delete an existing binding by leaving the expression empty:
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map gh # deletes 'gh' mapping
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"cmd" is used to define a custom command
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cmd usage $du -h . | less
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You can delete an existing command by leaving the expression empty:
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cmd trash # deletes trash command
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If there is no prefix then ":" is assumed:
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map zt set showinfo time
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An explicit ":" could be provided to group statements until a "\n" occurs which
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is especially useful for "map" and "cmd" commands:
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map st :set sortby time; set showinfo time
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If you need multiline you can wrap statements in "{{" and "}}" after the proper
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prefix.
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map st :{{
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set sortby time
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set showinfo time
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}}
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Mappings
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@ -120,18 +158,18 @@ arguments. You can "map" a key to a "push" command with an argument to create
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various keybindings.
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This is mainly useful for two purposes. First, it can be used to map a command
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with a command count.
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with a command count:
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map <c-j> push 10j
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map <c-j> push 10j
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Second, it can be used to avoid typing the name when a command takes arguments.
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Second, it can be used to avoid typing the name when a command takes arguments:
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map r push :rename<space>
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map r push :rename<space>
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One thing to be careful is that since "push" command works with keys instead of
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commands it is possible to accidentally create recursive bindings.
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commands it is possible to accidentally create recursive bindings:
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map j push 2j
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map j push 2j
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These types of bindings create a deadlock when executed.
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@ -142,36 +180,36 @@ trash.
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A first attempt to write such a command may look like this:
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cmd trash ${{
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mkdir -p ~/.trash
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if [ -z $fs ]; then
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mv --backup=numbered "$f" $HOME/.trash
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else
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IFS=':'; mv --backup=numbered $fs $HOME/.trash
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fi
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}}
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cmd trash ${{
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mkdir -p ~/.trash
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if [ -z $fs ]; then
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mv --backup=numbered "$f" $HOME/.trash
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else
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IFS=':'; mv --backup=numbered $fs $HOME/.trash
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fi
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}}
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We check "$fs" to see if there are any marked files. Otherwise we just delete
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the current file. Since this is such a common pattern, a separate "$fx"
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variable is provided. We can use this variable to get rid of the conditional.
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variable is provided. We can use this variable to get rid of the conditional:
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cmd trash ${{
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mkdir -p ~/.trash
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IFS=':'; mv --backup=numbered $fx $HOME/.trash
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}}
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cmd trash ${{
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mkdir -p ~/.trash
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IFS=':'; mv --backup=numbered $fx $HOME/.trash
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}}
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The trash directory is checked each time the command is executed. We can move
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it outside of the command so it would only run once at startup.
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it outside of the command so it would only run once at startup:
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${{ mkdir -p ~/.trash }}
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${{ mkdir -p ~/.trash }}
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cmd trash ${{ IFS=':'; mv --backup=numbered $fx $HOME/.trash }}
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cmd trash ${{ IFS=':'; mv --backup=numbered $fx $HOME/.trash }}
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Since these are one liners, we can drop "{{" and "}}".
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Since these are one liners, we can drop "{{" and "}}":
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$mkdir -p ~/.trash
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$mkdir -p ~/.trash
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cmd trash $IFS=':'; mv --backup=numbered $fx $HOME/.trash
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cmd trash $IFS=':'; mv --backup=numbered $fx $HOME/.trash
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Finally note that we set "IFS" variable accordingly in the command. Instead we
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could use the "ifs" option to set it for all commands (e.g. "set ifs ':'").
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@ -195,22 +233,22 @@ Opening Files
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You can use "open-file" command to open a file. This is a special command
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called by "open" when the current file is not a directory. Normally a user maps
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the "open" command to a key (default "l") and customize "open-file" command as
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desired. You can define it just as you would define any other command.
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desired. You can define it just as you would define any other command:
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cmd open-file $IFS=':'; vim $fx
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cmd open-file $IFS=':'; vim $fx
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It is possible to use different command types.
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It is possible to use different command types:
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cmd open-file &xdg-open "$f"
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cmd open-file &xdg-open "$f"
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You may want to use either file extensions or mime types from "file" command.
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You may want to use either file extensions or mime types from "file" command:
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cmd open-file ${{
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case $(file --mime-type "$f" -b) in
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text/*) IFS=':'; vim $fx;;
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*) IFS=':'; for f in $fx; do xdg-open "$f" &> /dev/null & done;;
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esac
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}}
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cmd open-file ${{
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case $(file --mime-type "$f" -b) in
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text/*) IFS=':'; vim $fx;;
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*) IFS=':'; for f in $fx; do xdg-open "$f" &> /dev/null & done;;
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esac
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}}
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lf does not come bundled with a file opener. You can use any of the existing
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file openers as you like. Possible options are "open" (for Mac OS X only),
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@ -230,27 +268,27 @@ In order to use this feature you need to set the value of "previewer" option to
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the path of an executable file. lf passes the current file name as the first
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argument and the height of the preview pane as the second argument when running
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this file. Output of the execution is printed in the preview pane. You may want
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to use the same script in your pager mapping as well if any.
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to use the same script in your pager mapping as well if any:
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set previewer ~/.config/lf/pv.sh
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map i $~/.config/lf/pv.sh "$f" | less -R
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set previewer ~/.config/lf/pv.sh
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map i $~/.config/lf/pv.sh "$f" | less -R
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Since this script is called for each file selection change it needs to be as
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efficient as possible and this responsibility is left to the user. You may use
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file extensions to determine the type of file more efficiently compared to
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obtaining mime types from "file" command. Extensions can then be used to match
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cleanly within a conditional.
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cleanly within a conditional:
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#!/bin/sh
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#!/bin/sh
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case "$1" in
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*.tar*) tar tf "$1";;
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*.zip) unzip -l "$1";;
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*.rar) unrar l "$1";;
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*.7z) 7z l "$1";;
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*.pdf) pdftotext "$1" -;;
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*) highlight -O ansi "$1" || cat "$1";;
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esac
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case "$1" in
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*.tar*) tar tf "$1";;
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*.zip) unzip -l "$1";;
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*.rar) unrar l "$1";;
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*.7z) 7z l "$1";;
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*.pdf) pdftotext "$1" -;;
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*) highlight -O ansi "$1" || cat "$1";;
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esac
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Another important consideration for efficiency is the use of programs with
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short startup times for preview. For this reason, "highlight" is recommended
|
||||
|
||||
149
docstring.go
149
docstring.go
@ -14,7 +14,7 @@ online at https://godoc.org/github.com/gokcehan/lf.
|
||||
|
||||
Reference
|
||||
|
||||
The following commands are provided by lf with default keybindings.
|
||||
The following commands are provided by lf with default keybindings:
|
||||
|
||||
up (default "k" and "<up>")
|
||||
half-up (default "<c-u>")
|
||||
@ -41,14 +41,14 @@ The following commands are provided by lf with default keybindings.
|
||||
put (default "p")
|
||||
renew (default "<c-l>")
|
||||
|
||||
The following commands are provided by lf without default keybindings.
|
||||
The following commands are provided by lf without default keybindings:
|
||||
|
||||
sync synchronizes yanked/deleted files with server
|
||||
echo prints its arguments to the message line
|
||||
cd changes working directory to its argument
|
||||
push simulate key pushes given in its argument
|
||||
|
||||
The following options can be used to customize the behavior of lf.
|
||||
The following options can be used to customize the behavior of lf:
|
||||
|
||||
dirfirst bool (default on)
|
||||
hidden bool (default off)
|
||||
@ -63,7 +63,7 @@ The following options can be used to customize the behavior of lf.
|
||||
timefmt string (default "Mon Jan _2 15:04:05 2006")
|
||||
ratios string (default "1:2:3")
|
||||
|
||||
The following variables are exported for shell commands.
|
||||
The following variables are exported for shell commands:
|
||||
|
||||
$f current file
|
||||
$fs marked file(s) separated with ':'
|
||||
@ -72,9 +72,16 @@ The following variables are exported for shell commands.
|
||||
|
||||
Configuration
|
||||
|
||||
The configuration file should either be located in
|
||||
"$XDG_CONFIG_HOME/lf/lfrc" or "~/.config/lf/lfrc". A sample configuration
|
||||
file can be found at
|
||||
The configuration file should be located at:
|
||||
|
||||
$XDG_CONFIG_HOME/lf/lfrc"
|
||||
|
||||
If "$XDG_CONFIG_HOME" is not set, it defaults to "$HOME/.config" so the
|
||||
location should be:
|
||||
|
||||
~/.config/lf/lfrc
|
||||
|
||||
A sample configuration file can be found at
|
||||
https://github.com/gokcehan/lf/blob/master/etc/lfrc.example.
|
||||
|
||||
|
||||
@ -82,12 +89,12 @@ Prefixes
|
||||
|
||||
The following command prefixes are used by lf:
|
||||
|
||||
: read (default)
|
||||
$ read-shell
|
||||
! read-shell-wait
|
||||
& read-shell-async
|
||||
/ search
|
||||
? search-back
|
||||
: read (default) built-in command
|
||||
$ read-shell shell command
|
||||
! read-shell-wait shell command waiting for key press
|
||||
& read-shell-async asynchronous shell command
|
||||
/ search search file in current directory
|
||||
? search-back search file in the reverse order
|
||||
|
||||
The same evaluator is used for the command line and the configuration file.
|
||||
The difference is that prefixes are not necessary in the command line.
|
||||
@ -97,26 +104,56 @@ that by default these modes are mapped to the prefix keys above.
|
||||
|
||||
Syntax
|
||||
|
||||
Characters from "#" to "\n" are comments and ignored.
|
||||
Characters from "#" to "\n" are comments and ignored:
|
||||
|
||||
# comments start with '#'
|
||||
|
||||
There are three special commands for configuration.
|
||||
|
||||
"set" is used to set an option which could be bool (e.g. "set hidden", "set
|
||||
nohidden", "set hidden!"), int (e.g. "set scrolloff 10"), or string (e.g.
|
||||
"set sortby time").
|
||||
"set" is used to set an option which could be boolean, integer, or string:
|
||||
|
||||
"map" is used to bind a key to a command which could be built-in command
|
||||
(e.g. "map gh cd ~"), custom command (e.g. "map D trash"), or shell command
|
||||
(e.g. "map i $less "$f"", "map u !du -h . | less"). You can delete an
|
||||
existing binding by leaving the expression empty (e.g. "map gh").
|
||||
set hidden # boolean on
|
||||
set nohidden # boolean off
|
||||
set hidden! # boolean toggle
|
||||
set scrolloff 10 # integer value
|
||||
set sortby time # string value w/o quotes
|
||||
|
||||
"cmd" is used to define a custom command or delete an existing command by
|
||||
leaving the expression empty (e.g. "cmd trash").
|
||||
"map" is used to bind a key to a command which could be built-in command,
|
||||
custom command, or shell command:
|
||||
|
||||
If there is no prefix then ":" is assumed. An explicit ":" could be provided
|
||||
to group statements until a "\n" occurs. This is especially useful for "map"
|
||||
and "cmd" commands. If you need multiline you can wrap statements in "{{"
|
||||
and "}}" after the proper prefix.
|
||||
map gh cd ~ # built-in command
|
||||
map D trash # custom command
|
||||
map i $less "$f" # shell command
|
||||
map u !du -h . # waiting shell command
|
||||
|
||||
You can delete an existing binding by leaving the expression empty:
|
||||
|
||||
map gh # deletes 'gh' mapping
|
||||
|
||||
"cmd" is used to define a custom command
|
||||
|
||||
cmd usage $du -h . | less
|
||||
|
||||
You can delete an existing command by leaving the expression empty:
|
||||
|
||||
cmd trash # deletes trash command
|
||||
|
||||
If there is no prefix then ":" is assumed:
|
||||
|
||||
map zt set showinfo time
|
||||
|
||||
An explicit ":" could be provided to group statements until a "\n" occurs
|
||||
which is especially useful for "map" and "cmd" commands:
|
||||
|
||||
map st :set sortby time; set showinfo time
|
||||
|
||||
If you need multiline you can wrap statements in "{{" and "}}" after the
|
||||
proper prefix.
|
||||
|
||||
map st :{{
|
||||
set sortby time
|
||||
set showinfo time
|
||||
}}
|
||||
|
||||
|
||||
Mappings
|
||||
@ -129,17 +166,17 @@ arguments. You can "map" a key to a "push" command with an argument to
|
||||
create various keybindings.
|
||||
|
||||
This is mainly useful for two purposes. First, it can be used to map a
|
||||
command with a command count.
|
||||
command with a command count:
|
||||
|
||||
map <c-j> push 10j
|
||||
|
||||
Second, it can be used to avoid typing the name when a command takes
|
||||
arguments.
|
||||
arguments:
|
||||
|
||||
map r push :rename<space>
|
||||
|
||||
One thing to be careful is that since "push" command works with keys instead
|
||||
of commands it is possible to accidentally create recursive bindings.
|
||||
of commands it is possible to accidentally create recursive bindings:
|
||||
|
||||
map j push 2j
|
||||
|
||||
@ -154,32 +191,32 @@ trash.
|
||||
A first attempt to write such a command may look like this:
|
||||
|
||||
cmd trash ${{
|
||||
mkdir -p ~/.trash
|
||||
if [ -z $fs ]; then
|
||||
mv --backup=numbered "$f" $HOME/.trash
|
||||
else
|
||||
IFS=':'; mv --backup=numbered $fs $HOME/.trash
|
||||
fi
|
||||
mkdir -p ~/.trash
|
||||
if [ -z $fs ]; then
|
||||
mv --backup=numbered "$f" $HOME/.trash
|
||||
else
|
||||
IFS=':'; mv --backup=numbered $fs $HOME/.trash
|
||||
fi
|
||||
}}
|
||||
|
||||
We check "$fs" to see if there are any marked files. Otherwise we just
|
||||
delete the current file. Since this is such a common pattern, a separate
|
||||
"$fx" variable is provided. We can use this variable to get rid of the
|
||||
conditional.
|
||||
conditional:
|
||||
|
||||
cmd trash ${{
|
||||
mkdir -p ~/.trash
|
||||
IFS=':'; mv --backup=numbered $fx $HOME/.trash
|
||||
mkdir -p ~/.trash
|
||||
IFS=':'; mv --backup=numbered $fx $HOME/.trash
|
||||
}}
|
||||
|
||||
The trash directory is checked each time the command is executed. We can
|
||||
move it outside of the command so it would only run once at startup.
|
||||
move it outside of the command so it would only run once at startup:
|
||||
|
||||
${{ mkdir -p ~/.trash }}
|
||||
|
||||
cmd trash ${{ IFS=':'; mv --backup=numbered $fx $HOME/.trash }}
|
||||
|
||||
Since these are one liners, we can drop "{{" and "}}".
|
||||
Since these are one liners, we can drop "{{" and "}}":
|
||||
|
||||
$mkdir -p ~/.trash
|
||||
|
||||
@ -210,22 +247,22 @@ You can use "open-file" command to open a file. This is a special command
|
||||
called by "open" when the current file is not a directory. Normally a user
|
||||
maps the "open" command to a key (default "l") and customize "open-file"
|
||||
command as desired. You can define it just as you would define any other
|
||||
command.
|
||||
command:
|
||||
|
||||
cmd open-file $IFS=':'; vim $fx
|
||||
|
||||
It is possible to use different command types.
|
||||
It is possible to use different command types:
|
||||
|
||||
cmd open-file &xdg-open "$f"
|
||||
|
||||
You may want to use either file extensions or mime types from "file"
|
||||
command.
|
||||
command:
|
||||
|
||||
cmd open-file ${{
|
||||
case $(file --mime-type "$f" -b) in
|
||||
text/*) IFS=':'; vim $fx;;
|
||||
*) IFS=':'; for f in $fx; do xdg-open "$f" &> /dev/null & done;;
|
||||
esac
|
||||
case $(file --mime-type "$f" -b) in
|
||||
text/*) IFS=':'; vim $fx;;
|
||||
*) IFS=':'; for f in $fx; do xdg-open "$f" &> /dev/null & done;;
|
||||
esac
|
||||
}}
|
||||
|
||||
lf does not come bundled with a file opener. You can use any of the existing
|
||||
@ -248,7 +285,7 @@ to the path of an executable file. lf passes the current file name as the
|
||||
first argument and the height of the preview pane as the second argument
|
||||
when running this file. Output of the execution is printed in the preview
|
||||
pane. You may want to use the same script in your pager mapping as well if
|
||||
any.
|
||||
any:
|
||||
|
||||
set previewer ~/.config/lf/pv.sh
|
||||
map i $~/.config/lf/pv.sh "$f" | less -R
|
||||
@ -257,17 +294,17 @@ Since this script is called for each file selection change it needs to be as
|
||||
efficient as possible and this responsibility is left to the user. You may
|
||||
use file extensions to determine the type of file more efficiently compared
|
||||
to obtaining mime types from "file" command. Extensions can then be used to
|
||||
match cleanly within a conditional.
|
||||
match cleanly within a conditional:
|
||||
|
||||
#!/bin/sh
|
||||
|
||||
case "$1" in
|
||||
*.tar*) tar tf "$1";;
|
||||
*.zip) unzip -l "$1";;
|
||||
*.rar) unrar l "$1";;
|
||||
*.7z) 7z l "$1";;
|
||||
*.pdf) pdftotext "$1" -;;
|
||||
*) highlight -O ansi "$1" || cat "$1";;
|
||||
*.tar*) tar tf "$1";;
|
||||
*.zip) unzip -l "$1";;
|
||||
*.rar) unrar l "$1";;
|
||||
*.7z) 7z l "$1";;
|
||||
*.pdf) pdftotext "$1" -;;
|
||||
*) highlight -O ansi "$1" || cat "$1";;
|
||||
esac
|
||||
|
||||
Another important consideration for efficiency is the use of programs with
|
||||
|
||||
Loading…
Reference in New Issue
Block a user