Ruby on rails 如何使用ruby和parslet解析rtf文本?
我从RTF文件中获得以下数据: {\rtf1\ansi\deff3\adeflang1025\n{\fonttbl{\f0\froman\fprq2\fcharset0 泰晤士报新罗马;}{\f1\froman\fprq2\fcharset2 Symbol;}{\f2\fswiss\fprq2\fcharset0 Arial;}{\f3\froman\fprq2\fcharset128次新 罗马;}{\f4\fswiss\fprq2\fcharset128 Arial;}{\f5\fnil\fprq2\fcharset128 Droid Sans 回退;}{\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 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文本 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}{\comment 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\sectunlockd1\pgndec\pgwsxn12240\pghsxn15840\marglsxn1134\margrsxn1134\margtsxn1134\ftnbj\ftnstart1\ftnrstcont\ftnnar\aenddoc\aftnrstcont\aftnstart\aftnrlc\n\pgndec\pard\plain \s0\nowidctlpar{\*\hyphen2\hyphlead2\hyphtrail2\hyphmax0}\cf0\kerning1\hich\af5\langfe2052\dbch\af6\afs24\lang1081\loch\f3\fs24\lang1033{\rtlch \我喜欢读书。}\n\par} 按照Rob Miller的“使用Ruby进行文本处理”中的示例,我有以下Parslet解析器:Ruby on rails 如何使用ruby和parslet解析rtf文本?,ruby-on-rails,ruby,rtf,parslet,Ruby On Rails,Ruby,Rtf,Parslet,我从RTF文件中获得以下数据: {\rtf1\ansi\deff3\adeflang1025\n{\fonttbl{\f0\froman\fprq2\fcharset0 泰晤士报新罗马;}{\f1\froman\fprq2\fcharset2 Symbol;}{\f2\fswiss\fprq2\fcharset0 Arial;}{\f3\froman\fprq2\fcharset128次新 罗马;}{\f4\fswiss\fprq2\fcharset128 Arial;}{\f5\fnil\fp
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
需要“欧芹”
类Rtf>任何)。重复(1).as(:文本)}
规则(:控制字符){(斜杠>>
字母顺序为(:word)>>
控件\分隔符.maybe.as(:分隔符)
).as(:控制字)
}
规则(:control_分隔符){space |(hypen.maybe>>integer)| str(“;”)}
规则(:组){
(
str(“{”)>>
newline.maybe>>
内容>>
newline.maybe>>
str(“}”)
)
}
规则(:内容){
(
未格式化的|文本|控制|字|组
).重复
}
规则(:标题){
(斜杠>>str(“rtf”)>>integer.maybe.as(:version)).as(:rtf)>>
(斜杠>>字母顺序.as(:charset))>>
(斜杠>>str(“deff”)>>integer.maybe.maybe.as(:deff)>>
颜色表。可能。如(:颜色表)>>
纽琳,也许吧
}
规则(:颜色表){
newline.maybe>>
str(“{”)>>
(斜杠>>str(“彩色表格”)>>
颜色定义。重复(1)。如(:颜色)>>
str(“}”)>>
纽琳,也许吧
}
规则(颜色定义){
斜杠>>str(“red”)>>(intger.as(:int)).as(:red)>>
斜杠>>str(“绿色”)>>(intger.as(:int)).as(:绿色)>>
斜杠>>str(“blue”)>>(intger.as(:int)).as(:blue)>>
str(“;”)
}
规则(:文件){
str(“{”)>>
header.as(:header)>>
content.as(:document)>>
str(“}”)>>
纽琳,也许吧
}
根:文件
终止
使用上述parlet解析rtf文件会产生:
(byebug)解析{:header=>{:rtf=>{:version=>“1”@5},
:charset=>“ansi”@7,:deff=>“\deff3”@11,:color\u table=>nil},
:document=>[{:control\uword=>{:word=>“adeflang”@18,
:delimiter=>“1025”@26},{:text=>“\n”@30},{:text=>“\n”@374},
{:text=>“\n”@431},{:control\u 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=>“marger”@1237,:delimiter=>“1134”@1242}},
{:control_word=>{:word=>“margt”@12
rule(:group) {
(
str("{") >>
newline.maybe >>
content >>
newline.maybe >>
str("}")
).as(:group)
}
{:header=>
{:rtf=>{:version=>"1"@5},
:charset=>"ansi"@7,
:deff=>"\\deff3"@11,
:color_table=>nil},
:document=>
[{:control_word=>{:word=>"adeflang"@18, :delimiter=>"1025"@26}},
{:control_word=>{:word=>"n"@31, :delimiter=>nil}},
{:group=>
[{:control_word=>{:word=>"fonttbl"@34, :delimiter=>nil}},
{:group=>
[{:control_word=>{:word=>"f"@43, :delimiter=>"0"@44}},
{:control_word=>{:word=>"froman"@46, :delimiter=>nil}},
{:control_word=>{:word=>"fprq"@53, :delimiter=>"2"@57}},
{:control_word=>{:word=>"fcharset"@59, :delimiter=>"0"@67}},
{:text=>" Times New Roman;"@68}]},
{:group=>
[{:control_word=>{:word=>"f"@88, :delimiter=>"1"@89}},
{:control_word=>{:word=>"froman"@91, :delimiter=>nil}},
{:control_word=>{:word=>"fprq"@98, :delimiter=>"2"@102}},
{:control_word=>{:word=>"fcharset"@104, :delimiter=>"2"@112}},
{:text=>" Symbol;"@113}]},
{:group=>
[{:control_word=>{:word=>"f"@124, :delimiter=>"2"@125}},
{:control_word=>{:word=>"fswiss"@127, :delimiter=>nil}},
{:control_word=>{:word=>"fprq"@134, :delimiter=>"2"@138}},
{:control_word=>{:word=>"fcharset"@140, :delimiter=>"0"@148}},
{:text=>" Arial;"@149}]},
{:group=>
[{:control_word=>{:word=>"f"@159, :delimiter=>"3"@160}},
{:control_word=>{:word=>"froman"@162, :delimiter=>nil}},
{:control_word=>{:word=>"fprq"@169, :delimiter=>"2"@173}},
{:control_word=>{:word=>"fcharset"@175, :delimiter=>"128"@183}},
{:text=>" Times New Roman;"@186}]},
{:group=>
[{:control_word=>{:word=>"f"@206, :delimiter=>"4"@207}},
{:control_word=>{:word=>"fswiss"@209, :delimiter=>nil}},
{:control_word=>{:word=>"fprq"@216, :delimiter=>"2"@220}},
{:control_word=>{:word=>"fcharset"@222, :delimiter=>"128"@230}},
{:text=>" Arial;"@233}]},
{:group=>
[{:control_word=>{:word=>"f"@243, :delimiter=>"5"@244}},
{:control_word=>{:word=>"fnil"@246, :delimiter=>nil}},
{:control_word=>{:word=>"fprq"@251, :delimiter=>"2"@255}},
{:control_word=>{:word=>"fcharset"@257, :delimiter=>"128"@265}},
{:text=>" Droid Sans Fallback;"@268}]},
{:group=>
[{:control_word=>{:word=>"f"@292, :delimiter=>"6"@293}},
{:control_word=>{:word=>"fnil"@295, :delimiter=>nil}},
{:control_word=>{:word=>"fprq"@300, :delimiter=>"2"@304}},
{:control_word=>{:word=>"fcharset"@306, :delimiter=>"128"@314}},
{:text=>" DejaVu Sans;"@317}]},
{:group=>
[{:control_word=>{:word=>"f"@333, :delimiter=>"7"@334}},
{:control_word=>{:word=>"fswiss"@336, :delimiter=>nil}},
{:control_word=>{:word=>"fprq"@343, :delimiter=>"0"@347}},
{:control_word=>{:word=>"fcharset"@349, :delimiter=>"128"@357}},
{:text=>" DejaVu Sans;"@360}]}]},
{:control_word=>{:word=>"n"@376, :delimiter=>nil}},
{:group=>
[{:control_word=>{:word=>"colortbl"@379, :delimiter=>";"@387}},
{:control_word=>{:word=>"red"@389, :delimiter=>"0"@392}},
{:control_word=>{:word=>"green"@394, :delimiter=>"0"@399}},
{:control_word=>{:word=>"blue"@401, :delimiter=>"0"@405}},
{:text=>";"@406},
{:control_word=>{:word=>"red"@408, :delimiter=>"128"@411}},
{:control_word=>{:word=>"green"@415, :delimiter=>"128"@420}},
{:control_word=>{:word=>"blue"@424, :delimiter=>"128"@428}},
{:text=>";"@431}]},
{:control_word=>{:word=>"n"@434, :delimiter=>nil}},
{:group=>
[{:control_word=>{:word=>"stylesheet"@437, :delimiter=>nil}},
{:group=>
[{:control_word=>{:word=>"s"@449, :delimiter=>"0"@450}},
{:control_word=>{:word=>"snext"@452, :delimiter=>"0"@457}},
{:control_word=>{:word=>"nowidctlpar"@459, :delimiter=>nil}},
{:group=>
[{:control_word=>{:word=>[], :delimiter=>nil}},
{:text=>"*"@472},
{:control_word=>{:word=>"hyphen"@474, :delimiter=>"2"@480}},
{:control_word=>{:word=>"hyphlead"@482, :delimiter=>"2"@490}},
{:control_word=>{:word=>"hyphtrail"@492, :delimiter=>"2"@501}},
{:control_word=>{:word=>"hyphmax"@503, :delimiter=>"0"@510}}]},
{:control_word=>{:word=>"cf"@513, :delimiter=>"0"@515}},
{:control_word=>{:word=>"kerning"@517, :delimiter=>"1"@524}},
{:control_word=>{:word=>"hich"@526, :delimiter=>nil}},
{:control_word=>{:word=>"af"@531, :delimiter=>"5"@533}},
{:control_word=>{:word=>"langfe"@535, :delimiter=>"2052"@541}},
{:control_word=>{:word=>"dbch"@546, :delimiter=>nil}},
{:control_word=>{:word=>"af"@551, :delimiter=>"6"@553}},
{:control_word=>{:word=>"afs"@555, :delimiter=>"24"@558}},
{:control_word=>{:word=>"lang"@561, :delimiter=>"1081"@565}},
{:control_word=>{:word=>"loch"@570, :delimiter=>nil}},
{:control_word=>{:word=>"f"@575, :delimiter=>"3"@576}},
{:control_word=>{:word=>"fs"@578, :delimiter=>"24"@580}},
{:control_word=>{:word=>"lang"@583, :delimiter=>"1033"@587}},
{:text=>" Default;"@591}]},
{:control_word=>{:word=>"n"@602, :delimiter=>nil}},
{:group=>
[{:control_word=>{:word=>"s"@605, :delimiter=>"15"@606}},
{:control_word=>{:word=>"sbasedon"@609, :delimiter=>"0"@617}},
{:control_word=>{:word=>"snext"@619, :delimiter=>"16"@624}},
{:control_word=>{:word=>"sb"@627, :delimiter=>"240"@629}},
{:control_word=>{:word=>"sa"@633, :delimiter=>"120"@635}},
{:control_word=>{:word=>"keepn"@639, :delimiter=>nil}},
{:control_word=>{:word=>"hich"@645, :delimiter=>nil}},
{:control_word=>{:word=>"af"@650, :delimiter=>"5"@652}},
{:control_word=>{:word=>"dbch"@654, :delimiter=>nil}},
{:control_word=>{:word=>"af"@659, :delimiter=>"6"@661}},
{:control_word=>{:word=>"afs"@663, :delimiter=>"28"@666}},
{:control_word=>{:word=>"loch"@669, :delimiter=>nil}},
{:control_word=>{:word=>"f"@674, :delimiter=>"4"@675}},
{:control_word=>{:word=>"fs"@677, :delimiter=>"28"@679}},
{:text=>" Heading;"@681}]},
{:control_word=>{:word=>"n"@692, :delimiter=>nil}},
{:group=>
[{:control_word=>{:word=>"s"@695, :delimiter=>"16"@696}},
{:control_word=>{:word=>"sbasedon"@699, :delimiter=>"0"@707}},
{:control_word=>{:word=>"snext"@709, :delimiter=>"16"@714}},
{:control_word=>{:word=>"sb"@717, :delimiter=>"0"@719}},
{:control_word=>{:word=>"sa"@721, :delimiter=>"120"@723}},
{:text=>" Text body;"@726}]},
{:control_word=>{:word=>"n"@739, :delimiter=>nil}},
{:group=>
[{:control_word=>{:word=>"s"@742, :delimiter=>"17"@743}},
{:control_word=>{:word=>"sbasedon"@746, :delimiter=>"16"@754}},
{:control_word=>{:word=>"snext"@757, :delimiter=>"17"@762}},
{:control_word=>{:word=>"sb"@765, :delimiter=>"0"@767}},
{:control_word=>{:word=>"sa"@769, :delimiter=>"120"@771}},
{:control_word=>{:word=>"dbch"@775, :delimiter=>nil}},
{:control_word=>{:word=>"af"@780, :delimiter=>"7"@782}},
{:text=>" List;"@783}]},
{:control_word=>{:word=>"n"@791, :delimiter=>nil}},
{:group=>
[{:control_word=>{:word=>"s"@794, :delimiter=>"18"@795}},
{:control_word=>{:word=>"sbasedon"@798, :delimiter=>"0"@806}},
{:control_word=>{:word=>"snext"@808, :delimiter=>"18"@813}},
{:control_word=>{:word=>"sb"@816, :delimiter=>"120"@818}},
{:control_word=>{:word=>"sa"@822, :delimiter=>"120"@824}},
{:control_word=>{:word=>"noline"@828, :delimiter=>nil}},
{:control_word=>{:word=>"i"@835, :delimiter=>nil}},
{:control_word=>{:word=>"dbch"@837, :delimiter=>nil}},
{:control_word=>{:word=>"af"@842, :delimiter=>"7"@844}},
{:control_word=>{:word=>"afs"@846, :delimiter=>"24"@849}},
{:control_word=>{:word=>"ai"@852, :delimiter=>nil}},
{:control_word=>{:word=>"fs"@855, :delimiter=>"24"@857}},
{:text=>" Caption;"@859}]},
{:control_word=>{:word=>"n"@870, :delimiter=>nil}},
{:group=>
[{:control_word=>{:word=>"s"@873, :delimiter=>"19"@874}},
{:control_word=>{:word=>"sbasedon"@877, :delimiter=>"0"@885}},
{:control_word=>{:word=>"snext"@887, :delimiter=>"19"@892}},
{:control_word=>{:word=>"noline"@895, :delimiter=>nil}},
{:control_word=>{:word=>"dbch"@902, :delimiter=>nil}},
{:control_word=>{:word=>"af"@907, :delimiter=>"7"@909}},
{:text=>" Index;"@910}]},
{:control_word=>{:word=>"n"@919, :delimiter=>nil}}]},
{:group=>
[{:control_word=>{:word=>"info"@923, :delimiter=>nil}},
{:group=>
[{:control_word=>{:word=>"creatim"@929, :delimiter=>nil}},
{:control_word=>{:word=>"yr"@937, :delimiter=>"2018"@939}},
{:control_word=>{:word=>"mo"@944, :delimiter=>"7"@946}},
{:control_word=>{:word=>"dy"@948, :delimiter=>"15"@950}},
{:control_word=>{:word=>"hr"@953, :delimiter=>"11"@955}},
{:control_word=>{:word=>"min"@958, :delimiter=>"52"@961}}]},
{:group=>
[{:control_word=>{:word=>"revtim"@966, :delimiter=>nil}},
{:control_word=>{:word=>"yr"@973, :delimiter=>"0"@975}},
{:control_word=>{:word=>"mo"@977, :delimiter=>"0"@979}},
{:control_word=>{:word=>"dy"@981, :delimiter=>"0"@983}},
{:control_word=>{:word=>"hr"@985, :delimiter=>"0"@987}},
{:control_word=>{:word=>"min"@989, :delimiter=>"0"@992}}]},
{:group=>
[{:control_word=>{:word=>"printim"@996, :delimiter=>nil}},
{:control_word=>{:word=>"yr"@1004, :delimiter=>"0"@1006}},
{:control_word=>{:word=>"mo"@1008, :delimiter=>"0"@1010}},
{:control_word=>{:word=>"dy"@1012, :delimiter=>"0"@1014}},
{:control_word=>{:word=>"hr"@1016, :delimiter=>"0"@1018}},
{:control_word=>{:word=>"min"@1020, :delimiter=>"0"@1023}}]},
{:group=>
[{:control_word=>{:word=>"comment"@1027, :delimiter=>" "@1034}},
{:text=>"OpenOffice"@1035}]},
{:group=>
[{:control_word=>{:word=>"vern"@1048, :delimiter=>"4140"@1052}}]}]},
{:control_word=>{:word=>"deftab"@1059, :delimiter=>"709"@1065}},
{:control_word=>{:word=>"n"@1069, :delimiter=>nil}},
{:control_word=>{:word=>"n"@1071, :delimiter=>nil}},
{:group=>
[{:control_word=>{:word=>[], :delimiter=>nil}},
{:text=>"*"@1074},
{:control_word=>{:word=>"pgdsctbl"@1076, :delimiter=>nil}},
{:control_word=>{:word=>"n"@1085, :delimiter=>nil}},
{:group=>
[{:control_word=>{:word=>"pgdsc"@1088, :delimiter=>"0"@1093}},
{:control_word=>{:word=>"pgdscuse"@1095, :delimiter=>"195"@1103}},
{:control_word=>{:word=>"pgwsxn"@1107, :delimiter=>"12240"@1113}},
{:control_word=>{:word=>"pghsxn"@1119, :delimiter=>"15840"@1125}},
{:control_word=>{:word=>"marglsxn"@1131, :delimiter=>"1134"@1139}},
{:control_word=>{:word=>"margrsxn"@1144, :delimiter=>"1134"@1152}},
{:control_word=>{:word=>"margtsxn"@1157, :delimiter=>"1134"@1165}},
{:control_word=>{:word=>"margbsxn"@1170, :delimiter=>"1134"@1178}},
{:control_word=>{:word=>"pgdscnxt"@1183, :delimiter=>"0"@1191}},
{:text=>" Default;"@1192}]}]},
{:control_word=>{:word=>"n"@1204, :delimiter=>nil}},
{:control_word=>{:word=>"formshade"@1206, :delimiter=>nil}},
{:control_word=>{:word=>"paperh"@1216, :delimiter=>"15840"@1222}},
{:control_word=>{:word=>"paperw"@1228, :delimiter=>"12240"@1234}},
{:control_word=>{:word=>"margl"@1240, :delimiter=>"1134"@1245}},
{:control_word=>{:word=>"margr"@1250, :delimiter=>"1134"@1255}},
{:control_word=>{:word=>"margt"@1260, :delimiter=>"1134"@1265}},
{:control_word=>{:word=>"margb"@1270, :delimiter=>"1134"@1275}},
{:control_word=>{:word=>"sectd"@1280, :delimiter=>nil}},
{:control_word=>{:word=>"sbknone"@1286, :delimiter=>nil}},
{:control_word=>{:word=>"sectunlocked"@1294, :delimiter=>"1"@1306}},
{:control_word=>{:word=>"pgndec"@1308, :delimiter=>nil}},
{:control_word=>{:word=>"pgwsxn"@1315, :delimiter=>"12240"@1321}},
{:control_word=>{:word=>"pghsxn"@1327, :delimiter=>"15840"@1333}},
{:control_word=>{:word=>"marglsxn"@1339, :delimiter=>"1134"@1347}},
{:control_word=>{:word=>"margrsxn"@1352, :delimiter=>"1134"@1360}},
{:control_word=>{:word=>"margtsxn"@1365, :delimiter=>"1134"@1373}},
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