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import
future, json, options, re, sequtils, sets, strutils, tables,
package, utils,
"wrapper/curl"
type
AurComment* = tuple[
author: string,
date: string,
text: string
]
const
aurUrl* = "https://aur.archlinux.org/"
proc parseRpcPackageInfo(obj: JsonNode): Option[RpcPackageInfo] =
template optInt64(i: int64): Option[int64] =
if i > 0: some(i) else: none(int64)
let base = obj["PackageBase"].getStr
let name = obj["Name"].getStr
let version = obj["Version"].getStr
let descriptionEmpty = obj["Description"].getStr
let description = if descriptionEmpty.len > 0: some(descriptionEmpty) else: none(string)
let maintainerEmpty = obj["Maintainer"].getStr
let maintainer = if maintainerEmpty.len > 0: some(maintainerEmpty) else: none(string)
let firstSubmitted = obj["FirstSubmitted"].getBiggestInt(0).optInt64
let lastModified = obj["LastModified"].getBiggestInt(0).optInt64
let votes = (int) obj["NumVotes"].getBiggestInt(0)
let popularity = obj["Popularity"].getFloat(0)
if base.len > 0 and name.len > 0:
some(RpcPackageInfo(repo: "aur", base: base, name: name, version: version,
description: description, maintainer: maintainer,
firstSubmitted: firstSubmitted, lastModified: lastModified,
votes: votes, popularity: popularity))
else:
none(RpcPackageInfo)
template withAur*(body: untyped): untyped =
withCurlGlobal():
body
proc obtainPkgBaseSrcInfo(base: string): (string, Option[string]) =
try:
withAur():
withCurl(instance):
let url = aurUrl & "cgit/aur.git/plain/.SRCINFO?h=" &
instance.escape(base)
(performString(url), none(string))
except CurlError:
("", some(getCurrentException().msg))
proc getRpcPackageInfo*(pkgs: seq[string]): (seq[RpcPackageInfo], Option[string]) =
if pkgs.len == 0:
(@[], none(string))
else:
withAur():
try:
withCurl(instance):
let url = aurUrl & "rpc/?v=5&type=info&arg[]=" & @pkgs
.deduplicate
.map(u => instance.escape(u))
.foldl(a & "&arg[]=" & b)
let response = performString(url)
let results = parseJson(response)["results"]
let table = lc[(x.name, x) | (y <- results, x <- parseRpcPackageInfo(y)),
(string, RpcPackageInfo)].toTable
(lc[x | (p <- pkgs, x <- table.opt(p)), RpcPackageInfo], none(string))
except CurlError:
(@[], some(getCurrentException().msg))
except JsonParsingError:
(@[], some(tr"failed to parse server response"))
proc getAurPackageInfo*(pkgs: seq[string], rpcInfosOption: Option[seq[RpcPackageInfo]],
arch: string, progressCallback: (int, int) -> void): (seq[PackageInfo], seq[string]) =
if pkgs.len == 0:
(@[], @[])
else:
withAur():
progressCallback(0, pkgs.len)
let (rpcInfos, error) = if rpcInfosOption.isSome:
(rpcInfosOption.unsafeGet, none(string))
else:
getRpcPackageInfo(pkgs)
if error.isSome:
(@[], @[error.unsafeGet])
else:
type
ParseResult = tuple[
infos: seq[PackageInfo],
error: Option[string]
]
let deduplicated = lc[x.base | (x <- rpcInfos), string].deduplicate
progressCallback(0, deduplicated.len)
proc obtainAndParse(base: string, index: int): ParseResult =
let (srcInfo, operror) = obtainPkgBaseSrcInfo(base)
progressCallback(index + 1, deduplicated.len)
if operror.isSome:
(@[], operror)
else:
let pkgInfos = parseSrcInfo("aur", srcInfo, arch,
aurUrl & base & ".git", none(string), none(string), none(string), rpcInfos)
(pkgInfos, none(string))
let parsed = deduplicated.foldl(a & obtainAndParse(b, a.len), newSeq[ParseResult]())
let infos = lc[x | (y <- parsed, x <- y.infos), PackageInfo]
let errors = lc[x | (y <- parsed, x <- y.error), string]
let table = infos.map(i => (i.name, i)).toTable
(lc[x | (p <- pkgs, x <- table.opt(p)), PackageInfo], errors)
proc findAurPackages*(query: seq[string]): (seq[RpcPackageInfo], Option[string]) =
if query.len == 0 or query[0].len <= 2:
(@[], none(string))
else:
withAur():
try:
withCurl(instance):
let url = aurUrl & "rpc/?v=5&type=search&by=name&arg=" &
instance.escape(query[0])
let response = performString(url)
let results = parseJson(response)["results"]
let rpcInfos = lc[x | (y <- results, x <- parseRpcPackageInfo(y)), RpcPackageInfo]
let filteredRpcInfos = if query.len > 1: (block:
let queryLow = query[1 .. ^1].map(q => q.toLowerAscii)
rpcInfos.filter(i => queryLow.map(q => i.name.toLowerAscii.contains(q) or
i.description.map(d => d.toLowerAscii.contains(q)).get(false)).foldl(a and b)))
else:
rpcInfos
(filteredRpcInfos, none(string))
except CurlError:
(@[], some(getCurrentException().msg))
proc downloadAurComments*(base: string): (seq[AurComment], Option[string]) =
let (content, error) = withAur():
try:
withCurl(instance):
let url = aurUrl & "pkgbase/" & base & "/?comments=all"
(performString(url), none(string))
except CurlError:
("", some(getCurrentException().msg))
if error.isSome:
(@[], error)
else:
let commentRe = re("<h4\\ id=\"comment-\\d+\">\\n\\s+(.*)?\\ commented\\ on\\ " &
"(.*)\\n(?:.*\\n)*?\\s+</h4>\\n\\t\\t<div\\ id=\"comment-\\d+-content\"\\ " &
"class=\"article-content\">((?:\\n.*)*?)\\n\\t\\t</div>")
proc transformComment(comment: string): string =
comment
# line breaks can leave a space
.replace("\n", " ")
# force line break
.replace("<br />", "\n")
# paragraphs look like 2 line breaks
.replace("<p>", "\n\n")
.replace("</p>", "\n\n")
# remove tags
.replace(re"<.*?>", "")
# multiple spaces become 1 spage
.replace(re"\ {2,}", " ")
# strip lines
.strip.split("\n").map(s => s.strip).foldl(a & "\n" & b).strip
# don't allow more than 2 line breaks
.replace(re"\n{2,}", "\n\n")
# replace mnemonics
.replace("<", "<")
.replace(">", ">")
.replace(""", "\"")
.replace("&", "&")
proc findAllMatches(start: int, found: seq[AurComment]): seq[AurComment] =
var matches: array[3, string]
let index = content.find(commentRe, matches, start)
if index >= 0:
findAllMatches(index + 1, found & (matches[0].strip, matches[1].strip,
transformComment(matches[2])))
else:
found
(findAllMatches(0, @[]), none(string))
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