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import
future, options, posix, sequtils, strutils, times, unicode,
utils
type
PackageLineFormat* = tuple[
title: string,
values: seq[string],
forceBreak: bool
]
PackageInstallFormat* = tuple[
name: string,
repo: string,
oldVersion: Option[string],
newVersion: string
]
CommentFormat* = tuple[
author: string,
date: string,
text: string
]
Color {.pure.} = enum
normal = "\x1b[0m"
red = "\x1b[1;31m"
green = "\x1b[1;32m"
yellow = "\x1b[1;33m"
blue = "\x1b[1;34m"
magenta = "\x1b[1;35m"
cyan = "\x1b[1;36m"
bold = "\x1b[1;39m"
template `^`(c: Color): string =
if color: $c else: ""
type
WinSize = object
row: cushort
col: cushort
xpixel: cushort
ypixel: cushort
proc ioctl[T](fd: cint, request: culong, argp: var T): cint
{.importc, header: "<sys/ioctl.h>".}
proc getWindowSize(): tuple[width: int, height: int] =
var winSize: WinSize
if ioctl(1, 0x5413, winSize) != -1:
((int) winSize.col, (int) winSize.row)
else:
(0, 0)
proc tcflush(fd: cint, queueSelector: cint): cint
{.importc, header: "<termios.h>".}
proc discardStream() =
if isatty(0) != 0:
discard tcflush(0, 0)
proc printError*(color: bool, s: string) =
stderr.writeLine(^Color.red, trp"error: ", ^Color.normal, s)
proc printWarning*(color: bool, s: string) =
stderr.writeLine(^Color.yellow, trp"warning: ", ^Color.normal, s)
proc printFile*(color: bool, quiet: bool, name: string, file: string) =
if quiet:
echo(file)
else:
echo(^Color.bold, name, ^Color.normal, ' ', file)
proc formatPkgRating*(votes: int, popularity: float): string =
$votes & " / " & formatFloat(popularity, format = ffDecimal, precision = 6)
proc computeMaxLength*(texts: openArray[string]): int =
texts.map(runeLen).max
proc splitLines(text: string, lineSize: int, lines: seq[string] = @[]): seq[string] =
let addBreaks = lineSize >= 10
if not addBreaks:
lines & text
else:
let offset = text.runeOffset(lineSize)
if offset < 0:
lines & text
else:
let leftIndex = text.rfind(' ', offset - 1)
let rightIndex = text.find(' ', offset - 1)
let index = if leftIndex >= 0: leftIndex else: rightIndex
if index < 0:
lines & text
else:
text[index .. ^1].strip.splitLines(lineSize,
lines & text[0 .. index - 1].strip)
proc printPackageInfo*(minPadding: int, color: bool, lines: varargs[PackageLineFormat]) =
let width = getWindowSize().width
let divider = " : "
let padding = max(lines.map(line => line.title.runeLen).max, minPadding)
let lineSize = width - (padding + divider.len)
proc formatTextLines(values: seq[string], forceBreak: bool): seq[string] =
if values.len == 0:
@[]
elif forceBreak:
lc[x | (y <- values.map(s => s.strip.splitLines(lineSize)), x <- y), string]
else:
values.map(v => v.strip).foldl(a & " " & b).splitLines(lineSize)
proc formatText(values: seq[string], forceBreak: bool): string =
let textSeq = formatTextLines(values, forceBreak)
if textSeq.len > 0:
textSeq.foldl(a & "\n" & ' '.repeat(padding + divider.len) & b)
else:
"None"
for line in lines:
let title = line.title & ' '.repeat(padding - line.title.runeLen) & divider
let text = formatText(line.values, line.forceBreak)
echo(^Color.bold, title, ^Color.normal, text)
# pacman leaves empty line in the end of info
echo()
proc printPackageSearch*(color: bool, repo: string, name: string,
version: string, installedVersion: Option[string],
description: Option[string], extra: Option[string]) =
let commonText = ^Color.magenta & repo & "/" &
^Color.bold & name & " " & ^Color.green & version & ^Color.normal
let installedText = if installedVersion == some(version):
" " & ^Color.cyan &
"[" & trp"installed" & "]" & ^Color.normal
elif installedVersion.isSome:
" " & ^Color.cyan &
"[" & trp"installed" & ": " & installedVersion.unsafeGet &
"]" & ^Color.normal
else:
""
let extraText = extra.map(e => " " & ^Color.yellow &
"[" & e & "]" & ^Color.normal).get("")
echo(commonText & installedText & extraText)
let padding = 4
let lines = description.get("").splitLines(getWindowSize().width - padding)
for line in lines:
echo(' '.repeat(padding), line)
proc printPackagesRegular(color: bool, warn: bool, packages: seq[PackageInstallFormat]) =
let title = trp"Packages" & " (" & $packages.len & ") "
let padding = title.runeLen
let lines = packages.map(p => p.name & "-" & p.newVersion).foldl(a & " " & b)
.splitLines(getWindowSize().width - padding)
echo()
if warn:
printWarning(color, trp("insufficient columns available for table display\n"))
echo(^Color.bold, title, ^Color.normal, lines[0])
for line in lines[1 .. ^1]:
echo(' '.repeat(padding), line)
echo()
proc printPackagesVerbose(color: bool, packages: seq[PackageInstallFormat]) =
let packageTitle = trp"Package" & " (" & $packages.len & ")"
let oldVersionTitle = trp"Old Version"
let newVersionTitle = trp"New Version"
let packageLen = max(packageTitle.runeLen,
packages.map(p => p.name.len + 1 + p.repo.len).max)
let oldVersionLenEmpty = packages.map(p => p.oldVersion.map(v => v.len).get(0)).max
let oldVersionLen = if oldVersionLenEmpty > 0:
max(oldVersionTitle.runeLen, oldVersionLenEmpty)
else:
0
let newVersionLenEmpty = packages.map(p => p.newVersion.len).max
let newVersionLen = if newVersionLenEmpty > 0:
max(newVersionTitle.runeLen, newVersionLenEmpty)
else:
0
let totalLen = packageLen +
(if oldVersionLen > 0: oldVersionLen + 2 else: 0) +
(if newVersionLen > 0: newVersionLen + 2 else: 0)
let width = getWindowSize().width
if width > 0 and totalLen > width:
printPackagesRegular(color, true, packages)
else:
echo()
echo(^Color.bold & packageTitle &
' '.repeat(packageLen - packageTitle.runeLen) &
(if oldVersionLen > 0: " " & oldVersionTitle &
' '.repeat(oldVersionLen - oldVersionTitle.runeLen) else: "") &
" " & newVersionTitle & ^Color.normal)
echo()
for package in packages:
let name = package.repo & "/" & package.name
let oldVersion = package.oldVersion.get("")
echo(name & ' '.repeat(packageLen - name.runeLen) &
(if oldVersionLen > 0: " " & oldVersion &
' '.repeat(oldVersionLen - oldVersion.len) else: "") &
" " & package.newVersion)
echo()
proc printPackages*(color: bool, verbose: bool, packages: seq[PackageInstallFormat]) =
if verbose:
printPackagesVerbose(color, packages)
else:
printPackagesRegular(color, false, packages)
proc printComments*(color: bool, maintainer: Option[string],
comments: seq[CommentFormat]) =
echo()
for comment in comments:
let badge = if maintainer == some(comment.author):
^Color.cyan & "[maintainer]" & ^Color.normal & " "
else:
""
echo(^Color.blue & comment.author & ^Color.normal & " " & badge &
^Color.bold & comment.date & ^Color.normal)
echo(comment.text.replace("\n\n", "\n"))
echo()
proc printColon*(color: bool, s: string) =
echo(^Color.blue, ":: ", ^Color.bold, s, ^Color.normal)
proc printColonUserInput*(color: bool, s: string,
noconfirm: bool, default: string, cancel: string): string =
# pacman writes questions to stderr unless noconfirm specified
let stream = if noconfirm: stdout else: stderr
stream.write(^Color.blue, ":: ", ^Color.bold, s, ^Color.normal, " ")
stream.flushFile()
if noconfirm:
stream.write("\n")
stream.flushFile()
default
else:
try:
discardStream()
stdin.readLine()
except EOFError:
cancel
proc printColonUserChoice*(color: bool, s: string, answers: openArray[char],
positive: char, negative: char, noconfirm: bool, default: char): char =
let answersStr = answers
.map(c => (if c == positive: c.toUpperAscii else: c))
.foldl(a & "/" & $b, "")
let input = printColonUserInput(color, s & " [" & answersStr[1 .. ^1] & "]",
noconfirm, $default, $negative)
if input.len == 0:
positive
elif input.len == 1:
let c = input[0].toLowerAscii
if c in answers: c else: negative
else:
negative
proc printUserInputHelp*(operations: varargs[tuple[answer: char, description: string]]) =
for operation in (@operations & ('?', tr"view this help")):
echo(" ", operation.answer, " - ", operation.description)
proc printProgressFull*(bar: bool, title: string): ((string, float) -> void, () -> void) =
let width = getWindowSize().width
if not bar or width <= 0:
echo(title, "...")
(proc (a: string, c: float) {.closure.} = discard, proc {.closure.} = discard)
else:
let infoLen = max(width * 6 / 10, 50).int
let progressLen = width - infoLen
let startTime = getTime().toUnix
var lastTime = startTime
var lastProgress = 0f
var averageSpeed = -1f
proc update(prefix: string, progress: float) {.closure.} =
let progressTrim = max(min(1, progress + 0.005), 0)
let progressStr = $(progressTrim * 100).int & "%"
let paddedProgressStr = ' '.repeat(5 - progressStr.len) & progressStr
let indicator = if progressLen > 8: (block:
let fullLen = progressLen - 8
let barLen = (fullLen.float * progressTrim).int
" [" & '#'.repeat(barLen) & '-'.repeat(fullLen - barLen) & "]")
else:
""
let time = getTime().toUnix
if progress > lastProgress and time > lastTime:
let speed = (progress - lastProgress) / (time - lastTime).float
lastTime = time
lastProgress = progress
if averageSpeed < 0:
averageSpeed = speed
else:
const factor = 0.25
averageSpeed = factor * speed + (1 - factor) * averageSpeed
let timeLeft = if averageSpeed > 0: (block:
let secondsLeft = ((1 - progress) / averageSpeed).int
let seconds = secondsLeft %% 60
let minutes = secondsLeft /% 60
let secondsStr = if seconds < 10: "0" & $seconds else: $seconds
let minutesStr = if minutes < 10: "0" & $minutes else: $minutes
minutesStr & ":" & secondsStr)
else:
"--:--"
stdout.write(prefix, title,
' '.repeat(infoLen - prefix.runeLen - title.runeLen - 1 - timeLeft.len),
' ', timeLeft, indicator, paddedProgressStr, "\x1b[0K\r")
stdout.flushFile()
proc terminate() {.closure.} =
echo()
update(" ", 0)
(update, terminate)
proc printProgressShare*(bar: bool, title: string): ((int, int) -> void, () -> void) =
let (updateFull, terminate) = printProgressFull(bar, title)
proc update(current: int, total: int) {.closure.} =
let prefix = if total > 0:
"(" & ' '.repeat(($total).len - ($current).len) & $current & "/" &
$total & ") "
else:
" "
updateFull(prefix, current / total)
(update, terminate)
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