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head utility works

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joachimschmidt557 2019-03-26 14:53:59 +01:00
parent 54ccd5fc9a
commit 3866bec55e
1 changed files with 11 additions and 3 deletions
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14
head.nim
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@ -1,10 +1,18 @@
import cligen, os, streams import cligen, os, streams
import common import common
proc main(files:seq[string]) = proc main(files:seq[string], lines=10, bytes=0) =
for file in files: for file in files:
var s = newFileStream(file, fmRead) var s = newFileStream(file, fmRead)
while not s.atEnd: if bytes > 0:
write(stdout, s.readChar) var currentByte = 0
while not s.atEnd and currentByte < bytes:
write(stdout, s.readChar)
inc currentByte
elif lines > 0:
var currentLine = 0
while not s.atEnd and currentLine < lines:
echo s.readLine
inc currentLine
dispatch(main, version=("version", nimbaseVersion)) dispatch(main, version=("version", nimbaseVersion))