gl/modules/mbsalign

Description:
Align/Truncate a string in a given screen width.

Files:
lib/mbsalign.c
lib/mbsalign.h

Depends-on:
wchar
wctype
wcwidth
mempcpy
stdint

configure.ac:

Makefile.am:
lib_SOURCES += mbsalign.c mbsalign.h

Include:
"mbsalign.h"

License:
LGPL

Maintainer:
Pádraig Brady
ls: fix alignment when month names have varying widths Reported by Samuel Thibault and Stéphane Raimbault, as the glibc fr_FR locale has recently changed to use the official but variable width abbreviated month names. Other glibc locales also have variable widths. http://sourceware.org/ml/libc-locales/2008-q1/msg00035.html http://sourceware.org/bugzilla/show_bug.cgi?id=9859 * NEWS: Mention the fix * gl/lib/mbsalign.c: A new module to align and truncate a string in a specified number of screen cells, while handling multi-byte characters appropriately. * gl/lib/mbsalign.h: Ditto * gl/modules/mbsalign: Ditto * bootstrap.conf: Reference the new module * src/ls.c (abmon_init): New function, precompute the abbreviated months aligned left in a minimum width column <= 5 screen cells. (align_nstrftime): New function, replace the first %b in the format specification to strftime with the precomputed month string. Note using the cached month strings speeds up `ls -lU` by around 17% on glibc-2.7-2 on linux at least. Also if we implement this function using heap storage rather than automatic storage, and use snprintf instead of strcpy, ls will slow down by 2% and 1% respectively (i.e. a net gain of 14% rather than 17%). * tests/ls/abmon-align: A new test to test ls alignment for various formats and locales * tests/Makefile.am: Reference the new test 2009-03-24 14:29:21 +00:00			`Description:`
			`Align/Truncate a string in a given screen width.`

			`Files:`
			`lib/mbsalign.c`
			`lib/mbsalign.h`

			`Depends-on:`
			`wchar`
			`wctype`
			`wcwidth`
			`mempcpy`
mbsalign: avoid warning with Solaris 10 cc * gl/lib/mbsalign.c: Include <stdint.h> for SIZE_MAX. Use SIZE_MAX rather than (size_t) -1, to avoid warning for "size_t x = -1" on Solaris 10 cc. * gl/modules/mbsalign (Depends-on): Add stdint. 2010-10-13 20:39:28 -07:00			`stdint`
ls: fix alignment when month names have varying widths Reported by Samuel Thibault and Stéphane Raimbault, as the glibc fr_FR locale has recently changed to use the official but variable width abbreviated month names. Other glibc locales also have variable widths. http://sourceware.org/ml/libc-locales/2008-q1/msg00035.html http://sourceware.org/bugzilla/show_bug.cgi?id=9859 * NEWS: Mention the fix * gl/lib/mbsalign.c: A new module to align and truncate a string in a specified number of screen cells, while handling multi-byte characters appropriately. * gl/lib/mbsalign.h: Ditto * gl/modules/mbsalign: Ditto * bootstrap.conf: Reference the new module * src/ls.c (abmon_init): New function, precompute the abbreviated months aligned left in a minimum width column <= 5 screen cells. (align_nstrftime): New function, replace the first %b in the format specification to strftime with the precomputed month string. Note using the cached month strings speeds up `ls -lU` by around 17% on glibc-2.7-2 on linux at least. Also if we implement this function using heap storage rather than automatic storage, and use snprintf instead of strcpy, ls will slow down by 2% and 1% respectively (i.e. a net gain of 14% rather than 17%). * tests/ls/abmon-align: A new test to test ls alignment for various formats and locales * tests/Makefile.am: Reference the new test 2009-03-24 14:29:21 +00:00
			`configure.ac:`

			`Makefile.am:`
			`lib_SOURCES += mbsalign.c mbsalign.h`

			`Include:`
			`"mbsalign.h"`

			`License:`
			`LGPL`

			`Maintainer:`
			`Pádraig Brady`