cdargs - Online in the Cloud

PROGRAM:

NAME

cdargs - bookmarks and browser for cd shell built-in

SYNOPSIS

cdargs [OPTIONS]
function cv () {
cdargs "$1" && cd "`cat "$HOME/.cdargsresult"`" ;
}
cv [Needle]

DESCRIPTION

With cdargs you can jump to various places throughout the file-system that are defined
using a plain text, line oriented bookmarks file.

You can create bookmarks by editing your bookmarks file "$HOME/.cdargs" using your
favorite editor, by using the "--add" option to cdargs or by using the built-in mechanism
that will be described later.

While you are in cdargs you can use various commands to navigate through your list of
bookmarks and through the file-system. These are described below in the section
"COMMANDS". The most commonly used and most obvious commands are the up/down keys for
navigation, "ENTER" for selection of a path and "q" for quit.

To be able to actually use this program together with the shell built-in "cd" command you
must use a little trick by defining a shell function. Of course the syntax for this is
different between the csh-like shells (like tcsh) and the sh-like shells (like bash).

For sh-like shells:
function cv () {
cdargs "$1" && cd "`cat "$HOME/.cdargsresult"`" ;
}

For csh-like shells:
alias cv 'cdargs \!* && cd `cat $HOME/.cdargsresult`'

Now you only have to put the cdargs binary somewhere into your path.

Of course you can create functions and/or aliases for different purposes. You might want
to add a pwd call to echo your current directories or put --nowrap in your functions to
enable a different scrolling behavior. See section SHELL FUNCTIONS below.

Since version 1.19 cdargs brings a collection of bash functions (and since 1.20 tcsh
aliases, too) with it. You only have to source this in your ~/.profile or ~/.bashrc (or
~/.tcsh) and you get nice kinds of magic prepared (completion...). Please read the cdargs-
bash.sh or cdargs-tcsh.csh respectively for the documentation of these functions.

COMMAND-LINE OPTIONS

You can call cdargs with a few options, but otherwise you probably won't call it directly
but via the function you defined.

-h or --help
display usage information and exit.

-v or --version
output version information and exit.

-a or --add=[:desc:]path
add path to the bookmarks list using the optional desc as description string.

-f or --file=FILE
uses the given FILE as bookmarks file

-u or --user=USER
read the default bookmarks file of USER. Won't modify that file.

-o or --output=FILE
use FILE as the result-file (who knows what The World might make of this feature
that I can't imagine...)

-b or --browse
start cdargs in BROWSE mode in the current directory.

-r or --noresolve
Don't exit with a result when the Needle matches a description exactly (which is
some every-day-magic) but show a list (even if it contains just one entry).

-c or --cwd
Make the current working directory the current entry on startup if it appears on
the list.

--nowrap
Don't wrap the cursor around when hitting the end of the list.

Needle The Needle performs some magic which I hope improves the usage of cdargs.

The Needle is examined in the following order and the first thing that fits is
taken.

If Needle is a one-digit integer the appropriate entry is preselected.

Otherwise if Needle is a string each entry of the list is checked whether it
contains Needle.

Then Needle has two functions:
If it just matches a substring of either path or description that option is placed
in the list.

If it exactly matches a description string this is the result (that means cdargs
closes the curses window, exits and the changing of directories takes place).

If it doesn't match a line, that line won't be displayed.

And to make things even more complicated you can affect this behavior by using the
"--noresolve" option. This option is used when you think you give a Needle which
matches descriptions exactly but you don't want it to be resolved if it does. This
option is internally turned on when you delete an entry (otherwise the deletion of
entries until only one entry is left would lead to resolving) or when the bookmarks
file contains only one entry.

Finally, if the filtered list (but not the bookmarks file) contains only one entry
it is selected and the program exits successfully, unless you chose --noresolve.

I can only hope that you understand this nested if babble...

Please note, that the existence of a Needle disables the saving of the list at the
end of the program.

COMMANDS

When you are in cdargs you have two modes and several commands at your hands.

The two modes are LIST (when your bookmark list is displayed) and BROWSE (when you
navigate through the file-system).

The navigation keys are mostly available in Emacs and vi style for all maniacs out there.

Common Keys

<UP>/<DOWN> or k/j or C-n/C-p
move selection up/down and scroll.

<ENTER>
select current entry.

<TAB> toggle modes: LIST or BROWSE.

<HOME>/<END> or C-a/C-e
goto first/last entry in list.

c add current directory to list.

C add current directory to list but ask the user for a description

<PgUp>/<PgDown> or C-v
Scroll the list in 10-line-steps. This will never wraparound and does not honor
the nowrap-option

e, v edit the list in $EDITOR.

H, ? show the help-screen.

~, / browse home/root directory.

q quit - saving the list.

C-c, C-g, C-[
abort - don't save the list.

Keys in BROWSE mode

<LEFT>, h, C-b
descent into current directory.

<RIGHT>, l, C-f
up one directory.

[num] make [num] the current highlighted entry

a add current entry to list.

A add current entry to list but ask the user for a description, just like with 'c'
and 'C'.

. toggle display of hidden files.

Keys in LIST mode

[num] select and resolve entry [num] if displayed.

<LEFT>, h, C-b
descent into the current entry.

<RIGHT>, l, C-f
up one directory from current dir.

d or C-d
delete current entry from list.

s or t swap (transpose) two entries of the list.

M or m move an entry up or down in the list and set the current position afterwards so
that repeated keystrokes keep moving the same entry up and down.

SHELL FUNCTIONS

In addition to the shell function mentioned above you might wish to add other commands to
your function. One example is to echo the directory you changed to:

function cv () {
cdargs "$1" && cd "`cat "$HOME/.cdargsresult"`"
&& pwd;
}

Or you can remove the file in which cdargs reports it's result:

function cv () {
cdargs "$1" && cd "`cat "$HOME/.cdargsresult"`"
&& rm -f "$HOME/.cdargsresult";
}

Since version 1.19 cdargs comes with a file of preset functions for bash: see cdargs-
bash.sh in the distribution. From now on you only have to source that file if you are
using a sh-like shell. Then you can use the shell completion to switch directories even
faster by typing

cv [TAB]

Since version 1.20 cdargs comes with a file of rudimentary aliases (and completion) for
the tcsh.
Any volunteers for porting all the bash functionality to tcsh are welcome.

DISPLAY

The cdargs window has one line at the bottom for the display of messages like when you
added to your list or when you hit an unknown key.

The second line from the bottom is a status line which shows the current directory and a
one letter code for the current operation mode:

B for BROWSE

L for LIST

The largest part of the display is used to show you either the list of your bookmarks or
the contents of the current directory. On the left side you'll probably find a number
which you can use for a slightly quicker jumping compared to using the cursor movement.
These numbers can be moved as described above. Next comes the short description of an
entry in brackets. This is convient when you have quite long paths in your bookmarks and
most of them start with the same base (e.g. /home/user). Finally there is the actual
absolute path you'll be warping to when finishing. Obviously the current entry is
highlighted.

If the path is preced by a "!" it points to an invalid directory. A bookmark pointing to
the current working directory is displayed in bold font (if the terminal emulation
understands that attribute).

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