The function getchar() returns an 'int' and not a 'char'. Coverity notes
that "Assigning the return value of getchar to char ... truncates its value."
and so for the most part we can resolve this easily by using 'int' as
intended, and often used throughout the codebase. A few places are not
so simple and would require further re-architecting of the code in order
to change this, so we leave them be.
Signed-off-by: Tom Rini <trini@konsulko.com>
The history buffer is currently a static array which can be some
10-40 kiB depending on configuration, and so adds considerably to
the U-Boot binary size. Allocate it dynamically instead to reduce
the U-Boot binary size.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
When inputting text outside the command line we don't want to use tab
for command completion. Add an option to control this.
Signed-off-by: Simon Glass <sjg@chromium.org>
When inputting text outside the command line we don't want history to be
accessible. Add an option to control this.
Signed-off-by: Simon Glass <sjg@chromium.org>
Rather than relying on the caller, terminate the string inside this
function. Do this each time we return, whether input is finished or
not. It is not needed when the input is aborted, since the string will
be discarded in that case.
Signed-off-by: Simon Glass <sjg@chromium.org>
Move most of the inner loop from cread_line() into a new function. This
will allow using it from other code.
This involves adding a few more members to the state struct.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reduce the indentation level of this code so it is easier to review the
next patch, which moves it into a function.
Signed-off-by: Simon Glass <sjg@chromium.org>
We want to reuse the editing code elsewhere. As a first step, move the
common variables into a struct. This will allow us to eventually put the
contents of the inner loop in a function, so it can be called from
elsewhere.
Signed-off-by: Simon Glass <sjg@chromium.org>
The index values are not very large so it makes no sense to use a long
integer. Change these to uint instead.
Signed-off-by: Simon Glass <sjg@chromium.org>
The Ctrl-W option is implemented in the cread_line_simple() but not in
the full version. This seems odd, so add an implementation.
Signed-off-by: Simon Glass <sjg@chromium.org>
There is a function for this but it is never used. Showing the history is
a useful feature, so add a new 'history' command.
Signed-off-by: Simon Glass <sjg@chromium.org>
The second call to cli_ch_process() is in the wrong place, meaning that
the one of the characters of an invalid escape sequence is swallowed
instead of being returned.
Fix the bug and add a test to cover this.
This behaviour matches that of the code before cli_getch() was
introduced. This was verified on the commit before b08e9d4b66 i.e.:
7d850f85aa ("sandbox: Enable mmc command and legacy images")
Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The current cread_line() function is very long. It handles the escape
processing inline. The menu command does similar processing but at the
character level, so there is some duplication.
Split the character processing into a new function cli_ch_process() which
processes individual characters and returns the resulting input character,
taking account of escape sequences. It requires the caller to set up and
maintain its state.
Update cread_line() to use this new function.
The only intended functional change is that an invalid escape sequence
does not add invalid/control characters into the input buffer, but instead
discards these.
Signed-off-by: Simon Glass <sjg@chromium.org>
This reverts commit d2e64d29c4.
This commit broke support for pound sign (£) and euro sign (€) keys on
Nokia N900 keypad.
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Globally replace all occurances of WATCHDOG_RESET() with schedule(),
which handles the HW_WATCHDOG functionality and the cyclic
infrastructure.
Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Tom Rini <trini@konsulko.com> [am335x_evm, mx6cuboxi, rpi_3,dra7xx_evm, pine64_plus, am65x_evm, j721e_evm]
Normally, readline is not used int SPL. However, it may be useful to
enable the Freescale DDR interactive mode in SPL, while U-Boot is still
executing from SRAM. The default settings for readline result in a large
buffer being allocated. Reduce the size of the maximum input line, and
the number of lines of scrollback when building for SPL.
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Some consoles use CSI 200~ and CSI 201~ to bracket inserts. This leads
U-Boot to misinterpret the inserted string. Ignore these escape sequences.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Move this out of the common header and include it only where needed. In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly. Finally, we have a few
cases where we did not need to include <asm/global_data.h> at all, so
remove that include.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
There should be no need to insert non-printable characters
and this prevents line editing getting confused.
Signed-off-by: Steve Bennett <steveb@workware.net.au>
The sandbox is built with the SDL2 library with invokes the X11 library
which in turn calls getc(). But getc() in glibc is defined as
int getc(FILE *)
This does not match our definition.
int getc(void)
The sandbox crashes when called with parameter -l.
Rename our library symbol getc() to getchar().
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
We should not use typedefs in U-Boot. They cannot be used as forward
declarations which means that header files must include the full header to
access them.
Drop the typedef and rename the struct to remove the _s suffix which is
now not useful.
This requires quite a few header-file additions.
Signed-off-by: Simon Glass <sjg@chromium.org>
This function belongs in time.h so move it over and add a comment.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <trini@konsulko.com>
This improves the cread_line() function so that it will correctly
process the 'Home', 'End', 'Delete' and arrow key escape sequences
produced by various terminal emulators. This makes command line editing
a more pleasant experience.
The previous code only supported the cursor keys and the 'Home' key, and
only for certain terminal emulator configurations. This adds support for
the 'End and 'Delete' keys, and recognises a wider range of escape
sequences. For example, the left arrow key can be 'ESC O D' instead of
'ESC [ D', and the 'Home' key can be 'ESC [ H', 'ESC O H', 'ESC 1 ~' or
'ESC 7 ~', depending on what terminal emulator you use and how it is
configured.
Signed-off-by: James Byrne <james.byrne@origamienergy.com>
Changes for v2
- Explicitly initialize variable to avoid spurious compiler warning.
Changes for v3
- Remove unnecessary setting of 'act' to ESC_REJECT (now its default
value).
This patch enables building SPL without
CONFIG_SPL_SERIAL_SUPPORT support.
Signed-off-by: Heiko Schocher <hs@denx.de>
[trini: Ensure we build arch/arm/imx-common on mx28]
Signed-off-by: Tom Rini <trini@konsulko.com>
This code is only used by one board, so it seems a shame to clutter up
the readline code with it. Move it into its own file.
Signed-off-by: Simon Glass <sjg@chromium.org>
It doesn't make sense to have the simple parser and the readline code
all in main. Split them out into separate files.
Signed-off-by: Simon Glass <sjg@chromium.org>
