This rather big patch adds support for the GNU Readline alternate
interface, for use with event loops:
void rl_callback_handler_install (const char *prompt, rl_vcpfunc_t *lhandler);
void rl_callback_read_char (void);
void rl_callback_handler_remove (void);
The code has been tested using the testit and excallback examples.
Both regular editing and searching works as intended.
Also, the problem with lingering artefacts on screen when scrolling
through the history has been fixed.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
All BSD style licenses put this text on a separate line, immediately
following the Copyright line. The C-News license is confusing enough
to most people, so let's align at least a bit with the norm.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
- Use Emacs K&R style
- Add missing braces to for() loops
- Fix coding style issues in cli.c example
- Add empty lines to separate sections
- Simplify and de-indent code, check error case first + continue
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This is a fix to a bug reported by Claus Fischer. When doing a reversed
i-search on the history, clear_line() sets rl_point to a negative value,
which is later used by ceol(). The intention is to clear the whole line
for the new Search: prompt, but indexing an array with a negative value
is strongly discouraged.
To prevent this negative indexing from happening we check in ceol() for
rl_point < 0, but we quickly notice another side effect: one lingering
character at the end of line when returning from i-search. The problem
manifests itself more cleary when having a looooo000ooonong prompt.
The fix is to rub out the extra space, insert the i-search string, and
*then* call ceol() again.
Thanks to Claus for pointing this out!
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
Free all allocated internal memory and reset variables so
rl_initialize() or readline() may be called again later.
Signed-off-by: Claus Fischer <claus.fischer@clausfischer.com>
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
Forcing update should flush, otherwise weird stuff happen when writing
to console asynchronously (cursor is moved, text is not displayed).
Signed-off-by: Jakub Pawlowski <jakubpawlo@gmail.com>
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
At least when building with Clang on OS X, there is an error on
[line 1120 of editline.c][err] caused by using the `ioctl()` function
without first declaring it by including its header `<sys/ioctl.h>`.
Adding this line makes the build complete without error.
[err]: https://github.com/troglobit/editline/blob/master/src/editline.c#L1120
Signed-off-by: C0deH4cker <c0deh4cker@gmail.com>
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This patch adds support for `--disable-eof` and `--disable-sigint` to
the Editline configure script. With either of these two switches the
`tty_special()` function bypasses the special TTY checks making it
possible to bind Ctrl-C and Ctrl-D to custom callbacks. This can be
useful if you want to emulate a Cisco style CLI rather than traditional
UNIX.
The user can of course also redefine the VINTR and VEOF special terminal
control characters, but these configure script switches may be easier to
use for some.
Also, the CLI example has been updated to bind Ctrl-D, Ctrl-C and Ctrl-Z
for testing purposes.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit reverts parts of 111fc5e, which originally was intended to
add support for custom key bindings at pos 0, or more specifically, to
be able to change the behavior of Ctrl-D. However this completely broke
compatibility with the original EOF behavior.
Signed-off-by: Toby Goodwin <toby@paccrat.org>
Signed-off-by: Joachim Nilsson <joachim.nilsson@westermo.se>
The word 'new' is a reserved keyword in C++ and C#, replacing it
with something else is one step further to making it possible to
build editline with a C++ compiler.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit adds a new global variable 'el_no_hist' which can be used
to disable auto-save of history as well as access to history using prev
and next keybindings (up/down arrows).
Signed-off-by: Mattias Walström <lazzer@gmail.com>
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
The two functions el_bind_key() and el_bind_key_in_metamap() should
not print status message on stderr, but rather return the status of
the key binding operation.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
When adding support for rl_reset_termial() the tty_info() code was also
refactored. This however led to the introduction of a bug that caused
tty_cols to be set to zero. This in turn caused c_possible() to fail
with SIGFPE in el_print_columns().
Regression was introduced in 1c89c9886c
This changeset refactors el_bind_key_in_metamap() into two functions,
adding el_bind_key(), to provide the ability for the user to bind keys
in both the regular and the meta-key maps.
Several useful, but previously internal, functions have been made global to
facilitate the example code mentioned above. These are likely useful to the
user of this library as well:
el_print_columns() - Display words in columns across a tty_cols wide screen.
el_ring_bell() - Can be used as default key binding function.
el_find_word() - Returns a copy of the word at rl_point.
This changeset adds support for:
* rl_prep_terminal(),
* rl_deprep_terminal(), both of which are only wrappers to rl_ttyset().
* rl_getc()
and:
* (*rl_getc_function), defaults to rl_getc()
* (*rl_event_hook)
* (*rl_prep_term_function), defaults to rl_prep_terminal()
* (*rl_deprep_term_function), defaults to rl_deprep_terminal()
For further details, see http://www.cs.unc.edu/~tell/dist/magic-readline.README
Differences from Steve's commit include: signal safety in rl_getc(), restart
read() on EINTR, and make sure to support "int meta_flag" to rl_prep_terminal()
which is the GNU syntax. To that end I reused the inverse of rl_meta_chars.
