我具有RTF文件中的以下数据：
{\ rtf1 \ ansi \ deff3 \ adeflang1025 \ n {\ fonttbl {\ f0 \ froman \ fprq2 \ fcharset0 Times New Roman；} {\ f1 \ froman \ fprq2 \ fcharset2 符号；} {\ f2 \ fswiss \ fprq2 \ fcharset0 Arial;} {\ f3 \ froman \ fprq2 \ fcharset128次 罗马；} {\ f4 \ fswiss \ fprq2 \ fcharset128 Arial;} {\ f5 \ fnil \ fprq2 \ fcharset128 Droid Sans 后备广告；} {\ f6 \ fnil \ fprq2 \ fcharset128 DejaVu Sans;} {\ f7 \ fswiss \ fprq0 \ fcharset128 DejaVu Sans;}} \ n {\ colortbl; \ red0 \ green0 \ blue0; \ red128 \ green128 \ blue128;} \ n {\ stylesheet {\ s0 \ snext0 \ nowidctlpar {\ * \ hyphen2 \ hyphlead2 \ hyphtrail2 \ hyphmax0} \\ cf0 \ kerning1 \ hich \ af5 \ langfe2052 \ dbch \ af6 \ afs24 \ lang1081 \ loch \ f3 \ fs24 \ lang1033 默认值；} \ n {\ s15 \ sbasedon0 \ snext16 \ sb240 \ sa120 \ keepn \ hich \ af5 \ dbch \ af6 \ afs28 \ loch \ f4 \ fs28 标题；} \ n {\ s16 \ sbasedon0 \ snext16 \ sb0 \ sa120文字 正文；} \ n {\ s17 \ sbasedon16 \ snext17 \ sb0 \ sa120 \ dbch \ af7 列表；} \ n {\ s18 \ sbasedon0 \ snext18 \ sb120 \ sa120 \ noline \ i \ dbch \ af7 \ afs24 \ ai \ fs24 标题；} \ n {\ s19 \ sbasedon0 \ snext19 \ noline \ dbch \ af7 索引；} \ n} {\ info {\ creatim \ yr2018 \ mo7 \ dy15 \ hr11 \ min52} {\ revtim \ yr0 \ mo0 \ dy0 \ hr0 \ min0} {\ printim \ yr0 \ mo0 \ dy0 \ hr0 \ min0 }{\评论 OpenOffice} {\ vern4140}} \ deftab709 \ n \ n {\ * \ pgdsctbl \ n {\ pgdsc0 \ pgdscuse195 \ pgwsxn12240 \ pghsxn15840 \ marglsxn1134 \ margrsxn1134 \ margtsxn1134 \ margbsxn1134 \ pgdscnxt0 默认值；}} \ n \ formshade \ paperh15840 \ paperw12240 \ margl1134 \ margr1134 \ margt1134 \ margb1134 \ sectd \ sbknone \ sectunlocked1 \ pgndec \ pgwsxn12240 \ pghsxn15840 \ marglsxn1134 \ margrsxnn1ft \ n \ t \ n \ n \ ft \ n \ ft \ n \ ft \ n \ n \ ft \ n \ ft \ n \ ft \ n \ n \ ft \ n \ ft \ n \ n \ ft \ n \ n \ ft \ n \ n \ ft \ n \ n \ ft \ n \ ft \ n \ n \ ft \ n \ n \ ft \ n \ n \ ft \ n \ n \ ft \ n \ n \ ft \ n \ n \ ft \ n \ n \ ft \ n \ n \ ft \ n \ n \ ft \ n \ n \ n \ ft \ n \ n \ ft \ n \ n \ ft \ n \ n \ ft \ n \ n \ aftnrstcont \ aftnstart1 \ aftnnrlc \ n \ pgndec \ pard \ plain \ s0 \ nowidctlpar {\ * \ hyphen2 \ hyphlead2 \ hyphtrail2 \ hyphmax0} \ cf0 \ kerning1 \ hich \ af5 \ langfe2052 \ dbch \ af6 \ afs24 \ lang1081 \ loch \ f3 \ fs24 \ lang1033 {\ rtlch \ ltrch \ loch \ n我喜欢阅读。} \ n \ par}
下面是Rob Miller的“使用Ruby进行文本处理”中的示例，下面是Parslet Parser：
require "parslet"
class Rtf < Parslet::Parser
rule(:space) { str(" ") }
rule(:hypen) { str("-") }
rule(:integer) { match["0-9"].repeat(1) }
rule(:newline) { str("\n") }
rule(:slash) { str("\\") }
rule(:letter_sequence) { match["a-z"].repeat }
rule(:special_chars) { match["\\\\{}"] }
rule(:unformatted_text) { ( special_chars.absent? >> any ).repeat(1).as(:text) }
rule(:control_word) { ( slash >>
letter_sequence.as(:word) >>
control_delimiter.maybe.as(:delimiter)
).as(:control_word)
}
rule(:control_delimiter) { space | ( hypen.maybe >> integer ) | str(";") }
rule(:group) {
(
str("{") >>
newline.maybe >>
content >>
newline.maybe >>
str("}")
)
}
rule(:content) {
(
unformatted_text | control_word | group
).repeat
}
rule(:header) {
( slash >> str("rtf") >> integer.maybe.as(:version) ).as(:rtf) >>
( slash >> letter_sequence.as(:charset) ) >>
( slash >> str("deff") >> integer.maybe ).maybe.as(:deff) >>
color_table.maybe.as(:color_table) >>
newline.maybe
}
rule(:color_table) {
newline.maybe >>
str("{") >>
( slash >> str("colortabl;") ) >>
color_definition.repeat(1).as(:colors) >>
str("}") >>
newline.maybe
}
rule(:color_definition) {
slash >> str("red") >> (intger.as(:int)).as(:red) >>
slash >> str("green") >> (intger.as(:int)).as(:green) >>
slash >> str("blue") >> (intger.as(:int)).as(:blue) >>
str(";")
}
rule(:file) {
str("{") >>
header.as(:header) >>
content.as(:document) >>
str("}") >>
newline.maybe
}
root :file
end
使用上述Parslet解析rtf文件会产生：
（byebug）解析了{：header => {：rtf => {：version =>“ 1” @ 5}， ：charset =>“ ansi” @ 7，：deff =>“ \ deff3” @ 11，：color_table => nil}， ：document => [{{：control_word => {：word =>“ adeflang” @ 18， ：delimiter =>“ 1025” @ 26}}，{：text =>“ \ n” @ 30}，{：text =>“ \ n” @ 374}， {：text =>“ \ n” @ 431}，{：control_word => {：word =>“ deftab” @ 1050， ：delimiter =>“ 709” @ 1056}}，{：text =>“ \ n \ n” @ 1059}，{：text =>“ \ n” @ 1191}， {：control_word => {：word =>“ formshade” @ 1193，：delimiter => nil}}， {：control_word => {：word =>“ paperh” @ 1203，：delimiter =>“ 15840” @ 1209}}， {：control_word => {：word =>“ paperw” @ 1215，：delimiter =>“ 12240” @ 1221}}， {：control_word => {：word =>“ margl” @ 1227，：delimiter =>“ 1134” @ 1232}}， {：control_word => {：word =>“ margr” @ 1237，：delimiter =>“ 1134” @ 1242}}， {：control_word => {：word =>“ margt” @ 1247，：delimiter =>“ 1134” @ 1252}}， {：control_word => {：word =>“ margb” @ 1257，：delimiter =>“ 1134” @ 1262}}， {：control_word => {：word =>“ sectd” @ 1267，：delimiter => nil}}， {：control_word => {：word =>“ sbknone” @ 1273，：delimiter => nil}}， {：control_word => {：word =>“ sectunlocked” @ 1281，：delimiter =>“ 1” @ 1293}}， {：control_word => {：word =>“ pgndec” @ 1295，：delimiter => nil}}， {：control_word => {：word =>“ pgwsxn” @ 1302，：delimiter =>“ 12240” @ 1308}}， {：control_word => {：word =>“ pghsxn” @ 1314，：delimiter =>“ 15840” @ 1320}}， {：control_word => {：word =>“ marglsxn” @ 1326，：delimiter =>“ 1134” @ 1334}}， {：control_word => {：word =>“ margrsxn” @ 1339，：delimiter =>“ 1134” @ 1347}}， {：control_word => {：word =>“ margtsxn” @ 1352，：delimiter =>“ 1134” @ 1360}}， {：control_word => {：word =>“ margbsxn” @ 1365，：delimiter =>“ 1134” @ 1373}}， {：control_word => {：word =>“ ftnbj” @ 1378，：delimiter => nil}}， {：control_word => {：word =>“ ftnstart” @ 1384，：delimiter =>“ 1” @ 1392}}， {：control_word => {：word =>“ ftnrstcont” @ 1394，：delimiter => nil}}， {：control_word => {：word =>“ ftnnar” @ 1405，：delimiter => nil}}， {：control_word => {：word =>“ aenddoc” @ 1412，：delimiter => nil}}， {：control_word => {：word =>“ aftnrstcont” @ 1420，：delimiter => nil}}， {：control_word => {：word =>“ aftnstart” @ 1432，：delimiter =>“ 1” @ 1441}}， {：control_word => {：word =>“ aftnnrlc” @ 1443，：delimiter => nil}}， {：text =>“ \ n” @ 1451}，{：control_word => {：word =>“ pgndec” @ 1453， ：delimiter => nil}}，{：control_word => {：word =>“ pard” @ 1460， ：delimiter => nil}}，{：control_word => {：word =>“普通” @ 1465，：delimiter =>“ “ @ 1470}}，{：control_word => {：word =>” s“ @ 1472，：delimiter =>” 0“ @ 1473}}， {：control_word => {：word =>“ nowidctlpar” @ 1475，：delimiter => nil}}， {：control_word => {：word =>“ cf” @ 1529，：delimiter =>“ 0” @ 1531}}， {：control_word => {：word =>“字距调整” @ 1533，：delimiter =>“ 1” @ 1540}}， {：control_word => {：word =>“ hich” @ 1542，：delimiter => nil}}， {：control_word => {：word =>“ af” @ 1547，：delimiter =>“ 5” @ 1549}}， {：control_word => {：word =>“ langfe” @ 1551，：delimiter =>“ 2052” @ 1557}}， {：control_word => {：word =>“ dbch” @ 1562，：delimiter => nil}}， {：control_word => {：word =>“ af” @ 1567，：delimiter =>“ 6” @ 1569}}， {：control_word => {：word =>“ afs” @ 1571，：delimiter =>“ 24” @ 1574}}， {：control_word => {：word =>“ lang” @ 1577，：delimiter =>“ 1081” @ 1581}}， {：control_word => {：word =>“ loch” @ 1586，：delimiter => nil}}， {：control_word => {：word =>“ f” @ 1591，：delimiter =>“ 3” @ 1592}}， {：control_word => {：word =>“ fs” @ 1594，：delimiter =>“ 24” @ 1596}}， {：control_word => {：word =>“ lang” @ 1599，：delimiter =>“ 1033” @ 1603}}， {：text =>“ \ n” @ 1643}，{：control_word => {：word =>“ par” @ 1645，：delimiter =>“ “ @ 1648}}]}
没有解析RTF文件中的任何文本，即“我喜欢阅读。”，我也不知道为什么。任何指导将不胜感激。
答案 0 :(得分：1)
这是因为您缺少所有组。
layoutsubviews添加'as（：group）'
现在您可以得到
import UIKit
class TableViewCell: UITableViewCell {
override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
contentView.do {
$0.backgroundColor = .white
$0.addShadow(ofColor: .black, radius: 1.5, offset: .zero, opacity: 0.1)
$0.cornerRadius = 6
}
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func layoutSubviews() {
super.layoutSubviews()
contentView.pin.all(UIEdgeInsets(inset: 5))
}
override func setHighlighted(_ highlighted: Bool, animated: Bool) {
super.setHighlighted(highlighted, animated: animated)
contentView.backgroundColor = highlighted ? UIColor(rgb: 217) : .white
}
}