jyapayne/Nim
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Extends align proc with default padding parameter.

Browse source
This commit is contained in:
Grzegorz Adam Hankiewicz 2013-07-05 21:37:30 +02:00
commit 65b899030d
1 changed files with 14 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

20
lib/pure/strutils.nim
View file

@ -440,16 +440,23 @@ proc repeatStr*(count: int, s: string): string {.noSideEffect,
result = newStringOfCap(count*s.len) result = newStringOfCap(count*s.len)
for i in 0..count-1: result.add(s) for i in 0..count-1: result.add(s)
proc align*(s: string, count: int): string {. proc align*(s: string, count: int, padding = ' '): string {.
noSideEffect, rtl, extern: "nsuAlignString".} = noSideEffect, rtl, extern: "nsuAlignString".} =
## Aligns a string `s` with spaces, so that is of length `count`. Spaces are ## Aligns a string `s` with `padding`, so that is of length `count`.
## added before `s` resulting in right alignment. If ``s.len >= count``, no ## `padding` characters (by default spaces) are added before `s` resulting in
## spaces are added and `s` is returned unchanged. If you need to left align ## right alignment. If ``s.len >= count``, no spaces are added and `s` is
## a string use the repeatChar proc. ## returned unchanged. If you need to left align a string use the
## ``repeatChar`` proc. Example:
##
## .. code-block:: nimrod
## assert align("abc", 4) == " abc"
## assert align("a", 0) == "a"
## assert align("1232", 6) == " 1232"
## assert align("1232", 6, '#') == "##1232"
if s.len < count: if s.len < count:
result = newString(count) result = newString(count)
var spaces = count - s.len var spaces = count - s.len
for i in 0..spaces-1: result[i] = ' ' for i in 0..spaces-1: result[i] = padding
for i in spaces..count-1: result[i] = s[i-spaces] for i in spaces..count-1: result[i] = s[i-spaces]
else: else:
result = s result = s
@ -1211,6 +1218,7 @@ when isMainModule:
doAssert align("abc", 4) == " abc" doAssert align("abc", 4) == " abc"
doAssert align("a", 0) == "a" doAssert align("a", 0) == "a"
doAssert align("1232", 6) == " 1232" doAssert align("1232", 6) == " 1232"
doAssert align("1232", 6, '#') == "##1232"
echo wordWrap(""" this is a long text -- muchlongerthan10chars and here echo wordWrap(""" this is a long text -- muchlongerthan10chars and here
it goes""", 10, false) it goes""", 10, false)
doAssert formatBiggestFloat(0.00000000001, ffDecimal, 11) == "0.00000000001" doAssert formatBiggestFloat(0.00000000001, ffDecimal, 11) == "0.00000000001"