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linux/fs/unicode/Kconfig

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treewide: Add SPDX license identifier - Makefile/Kconfig Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-19 20:07:45 +08:00
# SPDX-License-Identifier: GPL-2.0-only
unicode: introduce UTF-8 character database The decomposition and casefolding of UTF-8 characters are described in a prefix tree in utf8data.h, which is a generate from the Unicode Character Database (UCD), published by the Unicode Consortium, and should not be edited by hand. The structures in utf8data.h are meant to be used for lookup operations by the unicode subsystem, when decoding a utf-8 string. mkutf8data.c is the source for a program that generates utf8data.h. It was written by Olaf Weber from SGI and originally proposed to be merged into Linux in 2014. The original proposal performed the compatibility decomposition, NFKD, but the current version was modified by me to do canonical decomposition, NFD, as suggested by the community. The changes from the original submission are: * Rebase to mainline. * Fix out-of-tree-build. * Update makefile to build 11.0.0 ucd files. * drop references to xfs. * Convert NFKD to NFD. * Merge back robustness fixes from original patch. Requested by Dave Chinner. The original submission is archived at: <https://linux-xfs.oss.sgi.narkive.com/Xx10wjVY/rfc-unicode-utf-8-support-for-xfs> The utf8data.h file can be regenerated using the instructions in fs/unicode/README.utf8data. - Notes on the update from 8.0.0 to 11.0: The structure of the ucd files and special cases have not experienced any changes between versions 8.0.0 and 11.0.0. 8.0.0 saw the addition of Cherokee LC characters, which is an interesting case for case-folding. The update is accompanied by new tests on the test_ucd module to catch specific cases. No changes to mkutf8data script were required for the updates. Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2019-04-26 01:38:44 +08:00
#
# UTF-8 normalization
#
config UNICODE
unicode: clean up the Kconfig symbol confusion Turn the CONFIG_UNICODE symbol into a tristate that generates some always built in code and remove the confusing CONFIG_UNICODE_UTF8_DATA symbol. Note that a lot of the IS_ENABLED() checks could be turned from cpp statements into normal ifs, but this change is intended to be fairly mechanic, so that should be cleaned up later. Fixes: 2b3d04787012 ("unicode: Add utf8-data module") Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
2022-01-18 14:56:14 +08:00
tristate "UTF-8 normalization and casefolding support"
unicode: introduce UTF-8 character database The decomposition and casefolding of UTF-8 characters are described in a prefix tree in utf8data.h, which is a generate from the Unicode Character Database (UCD), published by the Unicode Consortium, and should not be edited by hand. The structures in utf8data.h are meant to be used for lookup operations by the unicode subsystem, when decoding a utf-8 string. mkutf8data.c is the source for a program that generates utf8data.h. It was written by Olaf Weber from SGI and originally proposed to be merged into Linux in 2014. The original proposal performed the compatibility decomposition, NFKD, but the current version was modified by me to do canonical decomposition, NFD, as suggested by the community. The changes from the original submission are: * Rebase to mainline. * Fix out-of-tree-build. * Update makefile to build 11.0.0 ucd files. * drop references to xfs. * Convert NFKD to NFD. * Merge back robustness fixes from original patch. Requested by Dave Chinner. The original submission is archived at: <https://linux-xfs.oss.sgi.narkive.com/Xx10wjVY/rfc-unicode-utf-8-support-for-xfs> The utf8data.h file can be regenerated using the instructions in fs/unicode/README.utf8data. - Notes on the update from 8.0.0 to 11.0: The structure of the ucd files and special cases have not experienced any changes between versions 8.0.0 and 11.0.0. 8.0.0 saw the addition of Cherokee LC characters, which is an interesting case for case-folding. The update is accompanied by new tests on the test_ucd module to catch specific cases. No changes to mkutf8data script were required for the updates. Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2019-04-26 01:38:44 +08:00
help
Say Y here to enable UTF-8 NFD normalization and NFD+CF casefolding
unicode: clean up the Kconfig symbol confusion Turn the CONFIG_UNICODE symbol into a tristate that generates some always built in code and remove the confusing CONFIG_UNICODE_UTF8_DATA symbol. Note that a lot of the IS_ENABLED() checks could be turned from cpp statements into normal ifs, but this change is intended to be fairly mechanic, so that should be cleaned up later. Fixes: 2b3d04787012 ("unicode: Add utf8-data module") Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
2022-01-18 14:56:14 +08:00
support. If you say M here the large table of case foldings will
be a separate loadable module that gets requested only when a file
system actually use it.
unicode: Add utf8-data module utf8data.h contains a large database table which is an auto-generated decodification trie for the unicode normalization functions. Allow building it into a separate module. Based on a patch from Shreeya Patel <shreeya.patel@collabora.com>. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
2021-09-15 15:00:05 +08:00
unicode: introduce test module for normalized utf8 implementation This implements a in-kernel sanity test module for the utf8 normalization core. At probe time, it will run basic sequences through the utf8n core, to identify problems will equivalent sequences and normalization/casefold code. This is supposed to be useful for regression testing when adding support for a new version of utf8 to linux. Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2019-04-26 01:56:01 +08:00
config UNICODE_NORMALIZATION_SELFTEST
tristate "Test UTF-8 normalization support"
unicode: clean up the Kconfig symbol confusion Turn the CONFIG_UNICODE symbol into a tristate that generates some always built in code and remove the confusing CONFIG_UNICODE_UTF8_DATA symbol. Note that a lot of the IS_ENABLED() checks could be turned from cpp statements into normal ifs, but this change is intended to be fairly mechanic, so that should be cleaned up later. Fixes: 2b3d04787012 ("unicode: Add utf8-data module") Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
2022-01-18 14:56:14 +08:00
depends on UNICODE
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