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bournish: 'ls' adjusts the column width depending on the entries. 

* guix/build/bournish.scm (display-tabulated): Remove #:columns and
  #:column-width parameters.  Add #:terminal-width and #:column-gap.
  Compute COLUMN-WIDTH and COLUMNS.
This commit is contained in:
Ludovic Courtès 2017-05-13 15:41:57 +02:00
parent c7d1b061f5
commit 1812205cf5
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1 changed files with 12 additions and 4 deletions
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guix/build/bournish.scm
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@ -48,11 +48,19 @@ refers to."
str))
(define* (display-tabulated lst
#:key (columns 3)
(column-width (/ 78 columns)))
"Display the list of string LST in COLUMNS columns of COLUMN-WIDTH
characters."
#:key
(terminal-width 80)
(column-gap 2))
"Display the list of string LST in as many columns as needed given
TERMINAL-WIDTH. Use COLUMN-GAP spaces between two subsequent columns."
(define len (length lst))
(define column-width
;; The width of a column. Assume all the columns have the same width
;; (GNU ls is smarter than that.)
(+ column-gap (reduce max 0 (map string-length lst))))
(define columns
(max 1
(quotient terminal-width column-width)))
(define pad
(if (zero? (modulo len columns))
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