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import os, strutils, terminal
proc readLines(path: string): seq[string] =
result = @[]
for line in lines(path):
result.add(line)
proc diffFiles(fileA, fileB: string) =
let
linesA = readLines(fileA)
linesB = readLines(fileB)
var
i = 0
j = 0
while i < linesA.len or j < linesB.len:
if i < linesA.len and j < linesB.len:
if linesA[i] == linesB[j]:
echo linesA[i] # identical, no color
i.inc
j.inc
else:
setForegroundColor(fgRed)
echo "- ", linesA[i]
resetAttributes()
setForegroundColor(fgGreen)
echo "+ ", linesB[j]
resetAttributes()
i.inc
j.inc
elif i < linesA.len:
setForegroundColor(fgRed)
echo "- ", linesA[i]
resetAttributes()
i.inc
elif j < linesB.len:
setForegroundColor(fgGreen)
echo "+ ", linesB[j]
resetAttributes()
j.inc
when isMainModule:
if paramCount() != 2:
echo "Usage: colordiff <file1> <file2>"
quit(1)
diffFiles(paramStr(1), paramStr(2))
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