linux-toradex.git/include/linux/string_helpers.h, branch v6.0-rc7

lib/string_helpers: Consolidate string helpers implementation

2022-02-07T21:03:07+00:00

There are a few implementations of string helpers in the tree like yesno()
that just returns "yes" or "no" depending on a boolean argument. Those
are helpful to output strings to the user or log.

In order to consolidate them, prefix all of them str_ prefix to make it
clear what they are about and avoid symbol clashes.
Taking the commoon `val ? "yes" : "no"` implementation,  quite a few
users of open coded yesno() could later be converted to the new
function:

$ git grep '?\s*"yes"\s*' | wc -l
286
$ git grep '?\s*"no"\s*' | wc -l
20

The inlined function should keep the const strings local to each
compilation unit, the same way it's now, thus not changing the current
behavior.

Signed-off-by: Lucas De Marchi 
Reviewed-by: Andy Shevchenko 
Acked-by: Jani Nikula 
Acked-by: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/20220126093951.1470898-2-lucas.demarchi@intel.com

lib/string_helpers: Introduce managed variant of kasprintf_strarray()

2021-11-18T16:40:08+00:00

Some of the users want to have easy way to allocate array of strings
that will be automatically cleaned when associated device is gone.

Introduce managed variant of kasprintf_strarray() for such use cases.

Signed-off-by: Andy Shevchenko

lib/string_helpers: Introduce kasprintf_strarray()

2021-11-18T16:40:08+00:00

We have a few users already that basically want to have array of
sequential strings to be allocated and filled.

Provide a helper for them (basically adjusted version from gpio-mockup.c).

Signed-off-by: Andy Shevchenko 
Reviewed-by: Linus Walleij

include/linux/string_helpers.h: add linux/string.h for strlen()

2021-11-09T18:02:50+00:00

linux/string_helpers.h uses strlen(), so include the correponding header.
Otherwise we get a compilation error if it's not also included by whoever
included the helper.

Link: https://lkml.kernel.org/r/20211005212634.3223113-1-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

seq_file: drop unused *_escape_mem_ascii()

2021-07-01T18:06:05+00:00

There are no more users of the seq_escape_mem_ascii() followed by
string_escape_mem_ascii().

Remove them for good.

Link: https://lkml.kernel.org/r/20210504180819.73127-16-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko 
Cc: Alexander Viro 
Cc: Chuck Lever 
Cc: "J. Bruce Fields" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lib/test-string_helpers: add test cases for new features

2021-07-01T18:06:05+00:00

We have got new flags and hence new features of string_escape_mem().
Add test cases for that.

Link: https://lkml.kernel.org/r/20210504180819.73127-10-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko 
Cc: Alexander Viro 
Cc: Chuck Lever 
Cc: "J. Bruce Fields" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lib/string_helpers: allow to append additional characters to be escaped

2021-07-01T18:06:04+00:00

Introduce a new flag to append additional characters, passed in 'only'
parameter, to be escaped if they fall in the corresponding class.

Link: https://lkml.kernel.org/r/20210504180819.73127-7-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko 
Cc: Alexander Viro 
Cc: Chuck Lever 
Cc: "J. Bruce Fields" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lib/string_helpers: introduce ESCAPE_NAP to escape non-ASCII and non-printable

2021-07-01T18:06:04+00:00

Some users may want to have an ASCII based filter for printable only
characters, provided by conjunction of isascii() and isprint() functions.

Here is the addition of a such.

Link: https://lkml.kernel.org/r/20210504180819.73127-6-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko 
Cc: Alexander Viro 
Cc: Chuck Lever 
Cc: "J. Bruce Fields" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lib/string_helpers: introduce ESCAPE_NA for escaping non-ASCII

2021-07-01T18:06:04+00:00

Some users may want to have an ASCII based filter, provided by isascii()
function.  Here is the addition of a such.

Link: https://lkml.kernel.org/r/20210504180819.73127-5-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko 
Cc: Alexander Viro 
Cc: Chuck Lever 
Cc: "J. Bruce Fields" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lib/string_helpers: switch to use BIT() macro

2021-07-01T18:06:04+00:00

Patch series "lib/string_helpers: get rid of ugly *_escape_mem_ascii()", v3.

Get rid of ugly *_escape_mem_ascii() API since it's not flexible and has
the only single user.  Provide better approach based on usage of the
string_escape_mem() with appropriate flags.

Test cases has been expanded accordingly to cover new functionality.

This patch (of 15):

Switch to use BIT() macro for flag definitions.  No changes implied.

Link: https://lkml.kernel.org/r/20210504180819.73127-1-andriy.shevchenko@linux.intel.com
Link: https://lkml.kernel.org/r/20210504180819.73127-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko 
Cc: "J. Bruce Fields" 
Cc: Chuck Lever 
Cc: Alexander Viro 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds