(* ETH Oberon, Copyright (c) 1990-present Computer Systems Institute, ETH Zurich, CH-8092 Zurich. License at ftp://ftp.ethoberon.ethz.ch/ETHOberon/license.txt . *) (* Conversion of an Oberon Text to MediaWiki markup with font attributes preserved. Analogous to the HTML module, https://en.wikibooks.org/wiki/Oberon/Oberon.HTML.Mod . The MediaWiki markup language is described in these pages. https://www.mediawiki.org/wiki/Help:Editing_pages https://en.wikibooks.org/wiki/Help:Editing https://en.wikibooks.org/wiki/Editing_Wikitext In MediaWiki markup, a series of lines, each beginning with a blank, is evaluated as preformatted. In MediaWiki, an indent can be represented by ":" rather than by blanks or a tab. Nevertheless the MediaWiki.Markup command converts a blank in indentation to " " and a tab in indentation to "	". In the HTML delivered by the Wikimedia servers, indentation is represented by nested description lists using the  and  tags. https://www.w3.org/wiki/HTML/Elements/dl https://www.w3.org/TR/2012/WD-html-markup-20120315/dl.html The consequence of the conversions, Oberon Text to MediaWiki markup, markup to HTML and HTML to displayed Text or text, is a display matching the original Oberon Text in appearance. Ideally, Desktops.OpenDoc should recover an Oberon Text matching the original at the binary level. While the HTML code has the correct attributes of typeface, size, weight, style, color and vertical offset, Desktops modules do not yet interpret all of this information. SYNTAX OF OUTPUT markup = " " {{ch} {span {ch}}} "". globalAttributes = """ fontSpec ";" sizeSpec ";" weightSpec ";" styleSpec ";" colorSpec ";" voffSpec """. span = "" {ch} "". attributeSpec = fontSpec | colorSpec | sizeSpec | weightSpec | styleSpec. fontSpec = "font-family: " fontFamily. fontFamily = fontName (", monospace" | ", Helvetica, sans-serif"). fontName = letter {letter | digit} sizeSpec = "font-size: " size. size = digit "." digit digit "rem". weightSpec = "font-weight: " weight. weight = "b" | "m" | "n". (Bold, medium or normal.) styleSpec = "font-style: " style. style = "i" | "n". (Italic or normal.)) colorSpec = "color: #" color. color = hexDigit hexDigit hexDigit hexDigit hexDigit hexDigit. voffSpec = "position: relative; top:" offset "%". (Script.Tool specifies % rather than points.) offset = ["-"] digit {digit}. (voff and offset have opposed signs. Positive offset shifts down.) TEXT ATTRIBUTES The first character of the Text determines the attributes of a global span enclosing the entire markup. Where any attribute changes, another span is opened. If a span is open, it is closed before a new span is opened. Therefore there is a global span and possibly a nested internal or local span. The inSpan flag is TRUE in an internal span. DEFICIENCIES While Oberon Text and HTML can contain non-character objects, including links and images, this markup preserves only characters of Text. HEAP USE For interest, heap use is reported at the end of MarkupFiles. *) MODULE MediaWiki (* IN S3 *); (** portable *) IMPORT Files, Texts, Oberon, Out := OutStub, Fonts, Display, TextFrames, Viewers, MenuViewers, Objects, Documents , Kernel; (* S3 *) (* , Machine IN A2, Heaps IN A2; A2 *) (* Change OutStub to Out for profuse tracing information. *) CONST Menu = "System.Close System.Copy System.Grow ET.Search ET.Replace ET.StoreAscii"; MediaWikiSuffix = ".mw"; nOrdinals = 128; ten = 9+1; (* Acceptable radix for HTML character references. *) sixteen = 0FH+1; (* Another acceptable radix. https://en.wikipedia.org/wiki/Radix https://en.wikipedia.org/wiki/Character_encodings_in_HTML#HTML_character_references *) hexaDecimalCharacterRefs = FALSE; (* To use hexadecimal character references change this to FALSE and calculate hexadecimals. *) TYPE Integer = LONGINT; (* LONGINT in S3, INTEGER in V5. *) TextAttributes = RECORD fntName: ARRAY 24 OF CHAR; (* To contain "Courier10.Pr6.Fnt" or "Oberon10.Scn.Fnt" or "Syntax12i.Scn.Fnt" for example. *) typeface: ARRAY 16 OF CHAR; (* Name of typeface. "Courier" for example. *) size: Integer; (* Oberon font size in points. *) weight: CHAR; (* "n" denoting normal, "b", bold. *) style: CHAR; (* "n" denoting normal, "i", italic. *) col: Display.Color; voff: Integer (* Vertical offset of character. *) END; CharWriter = PROCEDURE(ch: CHAR); StringWriter = PROCEDURE(s: ARRAY OF CHAR); EolWriter = PROCEDURE(); OrdinalStrings = ARRAY nOrdinals OF ARRAY 4 OF CHAR; (* 0 .. nOrdinals as strings of numeric characters. *) VAR C: CharWriter; S: StringWriter; L: EolWriter; (* to write the end of line. *) parT: Texts.Text; (* Parameter Text. *) parScn: Texts.Scanner; (* for command parameters. *) inT: Texts.Text; (* Input Text. *) D: Objects.Object; (* Document alternative to inT. *) sourceRdr: Texts.Reader; name, newName: ARRAY 64 OF CHAR; (* Names of input file or viewer and output file or viewer. *) nameScn: Texts.Scanner; (* for the name of the source viewer. *) v: Viewers.Viewer; mwF: Files.File; (* Mediawiki output. *) mwRider: Files.Rider; (* Rider for output file. *) mwT: Texts.Text; (* Output Text. *) mwWtr: Texts.Writer; (* for the MediaWiki output. *) Log: Texts.Writer; (* for Oberon.Log output. *) begin: Integer; (* Offset of selected beginning of input in parT. *) digits: ARRAY 17 OF CHAR; suffixArray: ARRAY 8 OF CHAR; linePrefix: ARRAY 64 OF CHAR; (* Prefix for output line. "" will produce flowed markup. Default, " ", produces fixed format. *) ch: CHAR; inLeftMargin: BOOLEAN; (* TRUE when beginning a fresh line. Pertinent to indentation and lists. *) globalAttr: TextAttributes; (* Attributes of the first character of the Text. *) extantAttr: TextAttributes; (* Attributes of the character being processed. *) remSize: Integer; (* Size of character as percentage of defaultSize. In Oberon, the default size is in Fonts.Default. In the CSS model, rem abbreviates root em and the default size is 1 rem. https://www.w3.org/TR/css3-values/#rem In Oberon, fonts range from 8 points to 24 points. Equivalently in CSS, the smallest possible font size is 1/3 rem and the largest is 3 rem. *) remString: ARRAY 5 OF CHAR; (* remSize as a string ranging '0.33" to "3.00". *) defaultSize: Integer; (* Size of Fonts.Default in Oberon. *) inSpan: BOOLEAN; (* TRUE in an inner span; where at least one attribute of ch doesn't match globalAttr. *) red, grn, blu: INTEGER; decimals: OrdinalStrings; (* 0 .. nOrdinals as strings of numeric characters in decimal notation. *) (* hexaDecimals: OrdinalStrings; 0 .. nOrdinals as strings of numeric characters in hexadecimal notation.. *) i: Integer; (* Add suffix to name without overrunning the containing array. *) PROCEDURE AddSuffix(name, suffix: ARRAY OF CHAR; VAR new: ARRAY OF CHAR); VAR i, si: Integer; BEGIN Out.String("MediaWiki.AddSuffix BEGIN: (name, suffix, new)"); Out.Ln(); Out.String("= ("); Out.String(name); Out.String(", "); Out.String(suffix); Out.String(", "); Out.String(new); Out.Char(")"); Out.Ln(); (* Locate upper bound of the first character of suffix. *) i := 0; si := LEN(new) - 1; WHILE (suffix[i] # 0X) & (0 < si) DO INC(i); DEC(si) END; IF suffix[i] # 0X THEN Texts.WriteString(Log, "Long suffix truncated to fit in new array. "); Texts.WriteLn(Log); Texts.Append(Oberon.Log, Log.buf) END; (* Retain or copy as much of the original name as suffix allows. *) i := 0; IF name = new THEN WHILE (i < si) & (name[i] # 0X) DO INC(i) END ELSE WHILE (i < si) & (name[i] # 0X) DO new[i] := name[i]; INC(i) END END; IF name[i] # 0X THEN Texts.WriteString(Log, "Name truncated to fit suffix. "); Texts.WriteLn(Log); Texts.Append(Oberon.Log, Log.buf) END; (* Add suffix. *) si := 0; WHILE (suffix[si] # 0X) & (i +1 < LEN(new)) DO new[i] := suffix[si]; INC(i); INC(si) END; new[i] := 0X; Out.String("MediaWiki.AddSuffix END: (name, suffix, new)"); Out.Ln(); Out.String("= ("); Out.String(name); Out.String(", "); Out.String(suffix); Out.String(", "); Out.String(new); Out.Char(")"); Out.Ln() END AddSuffix; PROCEDURE CF(ch: CHAR); BEGIN Files.Write(mwRider, ch) END CF; PROCEDURE CT(ch: CHAR); BEGIN Texts.Write(mwWtr, ch) END CT; PROCEDURE SF(s: ARRAY OF CHAR); VAR i: Integer; BEGIN i := 0; WHILE s[i] # 0X DO Files.Write(mwRider, s[i]); INC(i) END END SF; PROCEDURE ST(s: ARRAY OF CHAR); VAR i: Integer; BEGIN i := 0; WHILE s[i] # 0X DO Texts.Write(mwWtr, s[i]); INC(i) END END ST; PROCEDURE LF(); BEGIN Files.Write(mwRider, 0DX); Files.Write(mwRider, 0AX) END LF; PROCEDURE LT(); BEGIN Texts.Write(mwWtr, 0DX) END LT; PROCEDURE Read(): BOOLEAN; BEGIN Texts.Read(sourceRdr, ch); RETURN ~sourceRdr.eot END Read; (** Precondition: attr.fntName contains the name of an Oberon font. "Oberon10.Scn.Fnt" for example. Postcondition: typeface name, size, weight, style, col and voff have values according to ch. *) PROCEDURE DecodeAttributes(VAR attr: TextAttributes); VAR i: Integer; (* Index to characters in font name. *) BEGIN i := 0; WHILE ("@" < attr.fntName[i]) & (attr.fntName[i] < "{") DO attr.typeface[i] := attr.fntName[i]; INC(i) END; attr.typeface[i] := 0X; attr.size := 0; WHILE ("/" < attr.fntName[i]) & (attr.fntName[i] < ":") DO attr.size := (10 * attr.size) + ORD(attr.fntName[i]) - ORD("0"); INC(i) END; IF attr.fntName[i] = "b" THEN attr.weight := "b"; attr.style := "n" ELSIF attr.fntName[i] = "i" THEN attr.weight := "n"; attr.style := "i" ELSIF attr.fntName[i] = "m" THEN attr.weight := "m"; attr.style := "n" ELSIF attr.fntName[i] = "." THEN attr.weight := "n"; attr.style := "n" ELSE Out.String("MediaWiki.DecodeAttributes: character "); Out.Char(22X); Out.Char(ch); Out.Char(22X); Out.String(" following digit in font name not recognized. "); Out.Ln() END; attr.col := sourceRdr.col; attr.voff := sourceRdr.voff END DecodeAttributes; PROCEDURE Separate(); (* Write the appropriate attribute separator. *) BEGIN S("; "); IF inSpan THEN ELSE L(); S(linePrefix) END END Separate; (** Begin a  containing each attribute of ch differing from the attribute in globalAttr. The global span contains all attributes. *) PROCEDURE BeginSpan(); VAR attributeWritten: BOOLEAN; BEGIN Out.String("MediaWiki.BeginSpan: "); Out.Ln(); Out.String("extantAttr.fntName = "); Out.String(extantAttr.fntName); Out.String(", "); Out.Ln(); Out.String("typeface = "); Out.String(extantAttr.typeface); Out.String(", size = "); Out.Int(extantAttr.size, 0); Out.String(", weight = "); Out.Char(extantAttr.weight); Out.String(", style = "); Out.Char(extantAttr.style); Out.String(", "); Out.Ln(); Out.String("col = "); Out.Int(extantAttr.col, 0); Out.String(", voff = "); Out.Int(extantAttr.voff, 0); Out.Ln(); S(""); Out.String("BeginSpan(): END BeginSpan. "); Out.Ln() END BeginSpan; PROCEDURE EndSpan(); BEGIN S("") END EndSpan; (* Identify characters which have Wiki text significance anywhere. *) PROCEDURE isWikiChar(): BOOLEAN; VAR res: BOOLEAN; BEGIN IF (ch = "&") (* HTML and Wikimedia character reference. *) OR (ch = "'") (* Wikimedia italic and bold notation. *) OR (ch = ":") (* Wikimedia indentation and HTML URL. *) OR (ch = "<") (* HTML tag. *) OR (ch = "=") (* Wikimedia heading. *) OR (ch = ">") (* HTML tag. *) OR (ch = "[") (* Wikimedia link. *) OR (ch = "]") (* Wikimedia link. *) OR (("{" <= ch) & (ch <= "~")) (* Wikimedia template, pipe and username notations. *) THEN res := TRUE ELSE res := FALSE END; RETURN res END isWikiChar; (* Identify characters having markup significance & requiring replacement with HTML character references. *) PROCEDURE ChRefRequired(): BOOLEAN; VAR res: BOOLEAN; BEGIN IF inLeftMargin THEN (* Wiki characters at left margin. *) IF (ch = 09X) (* Tabs in left margin are deleted by Wikimedia. *) OR (ch = " ") (* Wikimedia preformatted box. *) OR (ch = "#") (* Wikimedia numbered list. *) OR (ch = "*") (* Wikimedia bullet list. *) OR (ch = ";") (* Wikimedia definition list. *) THEN res := TRUE ELSIF isWikiChar() THEN inLeftMargin := FALSE; res := TRUE ELSE inLeftMargin := FALSE; res := FALSE END ELSE (* ~inLeftMargin *) res := isWikiChar() END; RETURN res END ChRefRequired; PROCEDURE WriteChRef(); BEGIN S("&#"); IF hexaDecimalCharacterRefs THEN C("x") END; S(decimals[ORD(ch)]); C(";") END WriteChRef; PROCEDURE WriteCh(); BEGIN IF ch = 0DX THEN (* Begin a new line. *) L(); inLeftMargin := TRUE; S(linePrefix) ELSE IF ChRefRequired() THEN WriteChRef() ELSE C(ch) END END END WriteCh; (* Return TRUE when all attributes of ch match attr. Used to compare attributes of ch to those of preceeding character and to the global attributes. *) PROCEDURE ChFitsAttr(VAR attr: TextAttributes): BOOLEAN; BEGIN RETURN ((attr.fntName = sourceRdr.lib.name) & (attr.col = sourceRdr.col) & (attr.voff = sourceRdr.voff)) END ChFitsAttr; PROCEDURE MarkupInT(); VAR BEGIN Texts.OpenWriter(mwWtr); IF inT = NIL THEN Out.String("MediaWiki.MarkupInT: inT = NIL. No Text to convert. "); Out.Ln() ELSIF inT.len > 0 THEN Texts.OpenReader(sourceRdr, inT, 0); REPEAT Texts.Read(sourceRdr, ch); IF sourceRdr.eot THEN Out.String("MarkupInT(): sourceRdr at eot. "); Out.Ln() END; IF sourceRdr.lib = NIL THEN Out.String("MarkupInT(): sourceRdr.lib = NIL at Texts.Pos = "); Out.Int(Texts.Pos(sourceRdr)-1, 3); Out.Ln() END UNTIL (sourceRdr.eot OR (sourceRdr.lib IS Fonts.Font)); Out.String("MarkupInT: (sourceRdr.eot OR (sourceRdr.lib IS Fonts.Font)). "); Out.Ln(); IF sourceRdr.lib IS Fonts.Font THEN (* Got a character in ch. *) InitAttr(); (* Initialize attributes with values never realized in a Text. *) COPY(sourceRdr.lib.name, extantAttr.fntName); DecodeAttributes(extantAttr); Out.String("Attributes of first character decoded. "); Out.Ln(); S(linePrefix); inSpan := FALSE; BeginSpan(); (* Write global attributes according to first character. *) WriteCh(); COPY(extantAttr.fntName, globalAttr.fntName); DecodeAttributes(globalAttr); Out.String("Attributes of first character recorded in globalAttr. "); Out.Ln(); WHILE Read() DO IF (sourceRdr.lib = NIL) THEN Out.String("MarkupInT: sourceRdr.lib = NIL at Texts.Pos = "); Out.Int(Texts.Pos(sourceRdr)-1, 3); Out.Ln() ELSIF (sourceRdr.lib IS Fonts.Font) THEN (* Got a character. *) IF ~ChFitsAttr(extantAttr) THEN (* Change of attributes. *) IF inSpan THEN EndSpan(); inSpan := FALSE END; COPY(sourceRdr.lib.name, extantAttr.fntName); DecodeAttributes(extantAttr); IF ~ChFitsAttr(globalAttr) THEN inSpan := TRUE; BeginSpan() END END; WriteCh() END END; (* WHILE *) IF inSpan THEN EndSpan() END; EndSpan(); L(); (* Close global span. *) L(); S("{{BookCat}}"); L() (* Wikibook requirement. *) END; Out.String("MarkupInT: ELSIF inT.len > 0 ... END"); Out.Ln() (* If inT is empty then mwWtr.buf is empty? *) END; Texts.Open(mwT, ""); Out.String("MarkupInT(): completed Texts.Open(mwT, ..."); Out.Ln(); Texts.Append(mwT, mwWtr.buf); Out.String("MediaWiki: END MarkupInT"); Out.Ln() END MarkupInT; PROCEDURE StrLen(s: ARRAY OF CHAR):Integer; VAR len: Integer; BEGIN len := 0; WHILE (len < LEN(s)) & (s[len] # 0X) DO INC(len) END; RETURN len END StrLen; PROCEDURE MarkupViewer(); VAR V: Viewers.Viewer; X, Y: INTEGER; BEGIN Out.String("MarkupViewer(): invoking MarkupInT() on Text in viewer "); Out.String(name); Out.Ln(); (* Set write procedures for output into a Text.Writer.buf. *) C := CT; S := ST; L := LT; MarkupInT(); Oberon.AllocateUserViewer(Oberon.Par.vwr.X, X, Y); V := MenuViewers.New(TextFrames.NewMenu(newName, Menu), TextFrames.NewText(mwT, 0), TextFrames.menuH, X, Y) END MarkupViewer; (** Mark up the Text in a file and store the result in a file. *) PROCEDURE MarkupFile(); BEGIN Out.String("MarkupFile: invoking MarkupInT() on Text in file "); Out.String(name); Out.Ln(); NEW(inT); Texts.Open(inT, name); (* Set write procedures for output into a file. *) C := CF; S := SF; L := LF; mwF := Files.New(newName); Files.Set(mwRider, mwF, 0); Out.String("MarkupFile(): preparation for MarkupInT() complete. "); Out.Ln(); MarkupInT(); Out.String("MarkupFile(): finished writing to mwF. "); Out.Ln(); Files.Register(mwF); Texts.WriteString(Log, name); IF (StrLen(name) + StrLen(newName)) > 50 THEN Texts.WriteLn(Log); Texts.Write(Log, 09X) END; Texts.WriteString(Log, " => "); Texts.WriteString(Log, newName); Texts.Write(Log, 09X); Texts.WriteString(Log, " "); Texts.WriteInt(Log, Files.Length(mwF), 0); Texts.WriteLn(Log); Texts.Append(Oberon.Log, Log.buf); Out.String("Diff.Do "); Out.String(name); Out.Char(" "); Out.String(newName); Out.Ln() END MarkupFile; PROCEDURE CreateNewName(); BEGIN COPY(name, newName); AddSuffix(name, MediaWikiSuffix, newName) END CreateNewName; PROCEDURE WriteK(VAR W: Texts.Writer; k: LONGINT); VAR suffix: CHAR; BEGIN IF k < 10*1024 THEN suffix := "K" ELSIF k < 10*1024*1024 THEN suffix := "M"; k := k DIV 1024 ELSE suffix := "G"; k := k DIV (1024*1024) END; Texts.WriteInt(W, k, 1); Texts.Write(W, suffix); Texts.Write(W, "B") END WriteK; PROCEDURE MarkupFiles(); VAR free, total, largest, low, high: (* SIZE in A2 *) Integer (* in S3 *); BEGIN Out.String("MarkupFiles() BEGIN: parScn.s = "); Out.String(parScn.s); Out.Ln(); WHILE (~parScn.eot) & (Texts.Pos(parScn) + 100 < MAX(Integer)) & (parScn.class = Texts.Name) DO IF parScn.class = Texts.Name THEN (* A input file name to evaluate. *) COPY(parScn.s, name); Out.String("MarkupFiles(): token copied to name is "); Out.String(parScn.s); Out.Ln(); Texts.Scan(parScn); IF parScn.class # Texts.Char THEN (* parScn.s contains name of next input file. *) CreateNewName(); MarkupFile() ELSE (* parScn.class = Texts.Char ; newName according to "=>" syntax or end of parameter list. *) IF parScn.c = "~" THEN (* new name not specified and no more parameters. *) CreateNewName(); MarkupFile() ELSIF parScn.c = "=" THEN (* ">" should be next. *) Texts.Scan(parScn); IF parScn.class = Texts.Char THEN IF parScn.c = ">" THEN (* Syntax conforms to convention. *) ELSE (* Assume ">" was intended but not typed correctly. *) Texts.WriteString(Log, "MediaWiki.MarkupFiles(): character following = is not >. "); Texts.WriteLn(Log); Texts.Append(Oberon.Log, Log.buf) END; Texts.Scan(parScn); (* Try for output name. *) IF parScn.class = Texts.Name THEN COPY(parScn.s, newName) ELSE Texts.WriteString(Log, "MediaWiki.MarkupFiles(): output name not acquired according to syntax. "); Texts.WriteLn(Log); Texts.Append(Oberon.Log, Log.buf) END END; (* name and newName now available. *) MarkupFile(); Texts.Scan(parScn) ELSE Texts.WriteString(Log, "MediaWiki.MarkupFiles(): character parameter following input file name not appropriate. "); Texts.WriteLn(Log); Texts.Append(Oberon.Log, Log.buf) END END ELSE Texts.WriteString(Log, "MediaWiki.MarkupFiles(): no file name acquired by scanning. "); Texts.WriteLn(Log); Texts.Append(Oberon.Log, Log.buf) END END; (* WHILE *) (* A2 heap info. *) (* Heaps.GetHeapInfo(total, free, largest); free := (free+512) DIV 1024; largest := (largest+512) DIV 1024; Machine.GetFreeK(total, low, high); INC(free, low+high); IF high > largest THEN largest := high END; IF low > largest THEN largest := low END; Texts.Write(Log, 9X); Texts.WriteString(Log, "Heap has "); WriteK(Log, LONGINT(free)); Texts.WriteString(Log, " of "); WriteK(Log, LONGINT(total)); Texts.WriteString(Log, " free ("); WriteK(Log, LONGINT(largest)); Texts.WriteString(Log, " contiguous)"); Texts.WriteLn(Log); *) (* S3 heap info. *) free := (Kernel.Available()+512) DIV 1024; total := (Kernel.Available()+Kernel.Used()+512) DIV 1024; largest := (Kernel.LargestAvailable()+512) DIV 1024; Texts.Write(Log, 9X); Texts.WriteString(Log, "Heap has "); WriteK(Log, free); Texts.WriteString(Log, " of "); WriteK(Log, total); Texts.WriteString(Log, " free ("); WriteK(Log, largest); Texts.WriteString(Log, " contiguous)"); Texts.WriteLn(Log); Texts.Append(Oberon.Log, Log.buf) END MarkupFiles; (** MediaWiki.Markup ["linePrefix"] ( {File ["=>" mwFile]} | "*" | "^" ) ~ Examples MediaWiki.Markup * Markup the * marked viewer using the default linePrefix, a blank character. In Mediawiki, the " " line prefix produces fixed format in the browser view. MediaWiki.Markup "" * ~ Empty linePrefix, producing flowed format in the browser view. MediaWiki.Markup "a b" * ~ Prefix each line with "a b". MediaWiki.Markup This.Mod That.Mod ~ Produce files This.Mod.mw and That.Mod.mw with default line prefix. MediaWiki.Markup "a b" This.Mod => myThis.Mod.mw That.Mod => otherThat.Mod ~ Produce files myThis.Mod.mw and otherThat.Mod. Lines prefixed "a b". A series of lines, each beginning with " ", is converted by the Wikimedia software to a preformatted block. *) PROCEDURE Markup*; VAR end, time: Integer; BEGIN Texts.WriteLn(Log); Texts.WriteString(Log, "MediaWiki.Markup"); Texts.WriteLn(Log); Texts.Append(Oberon.Log, Log.buf); Texts.OpenScanner(parScn, Oberon.Par.text, Oberon.Par.pos); Texts.Scan(parScn); IF parScn.class # Texts.String THEN (* No line prefix in command. *) linePrefix[0] := " "; linePrefix[1] := 0X ELSE COPY(parScn.s, linePrefix); Texts.Scan(parScn) END; IF parScn.class = Texts.Name THEN (* Input from named files and output to files. *) MarkupFiles() ELSIF (parScn.class = Texts.Char) THEN IF parScn.c = "~" THEN (* Done*) ELSIF parScn.c = "^" THEN (* Input from files named in selection and output to files. *) Oberon.GetSelection(parT, begin, end, time); IF time >= 0 THEN Texts.OpenScanner(parScn, parT, begin); Texts.Scan(parScn) END; MarkupFiles(); ELSIF parScn.c = "*" THEN (* Input from viewer and output to viewer. *) inT := Oberon.MarkedText(); D := Documents.MarkedDoc(); IF D = NIL THEN (* A plain Text viewer? *) IF inT # NIL THEN v := Oberon.MarkedViewer(); Texts.OpenScanner(nameScn, v.dsc(TextFrames.Frame).text, 0); Texts.Scan(nameScn); Out.String("Marking up Text in viewer named "); Out.String(nameScn.s); Out.Ln(); COPY(nameScn.s, name) END ELSE (* A Document viewer. *) COPY(D(Documents.Document).name, name) END; AddSuffix(name, suffixArray, newName); MarkupViewer(); Out.String("Diff.Do "); (* Facilitate visual check of consistency beween original Text and Text derived from markup via HTML. *) IF inT # NIL THEN Out.String(newName) END; Out.String(" t.mw"); Out.Ln() END ELSE Texts.WriteString(Log, "MediaWiki.Markup: parameter of command not recognized. "); Texts.WriteLn(Log); Texts.Append(Oberon.Log, Log.buf) END END Markup; (* Create an array with rows 0..nOrdinals-1 representing ordinals as characters. The ordinal stored in each row terminated by 0X. ordinals[ord, 0] is the big end. This character representation of ordinals is used for HTML character references and for vertical offset. This version uses arithmetic. *) PROCEDURE BuildOrdinals0(VAR ordinals: OrdinalStrings; radix: Integer); VAR ord, i, j: Integer; nn: ARRAY 4 OF Integer; BEGIN ord := 0; WHILE ord < nOrdinals DO nn[0] := ord; i := LEN(nn); REPEAT DEC(i); nn[i] := nn[0] MOD radix; nn[0] := nn[0] DIV radix UNTIL nn[0] = 0; j := 0; WHILE i < LEN(nn) DO ordinals[ord, j] := digits[nn[i]]; INC(j); INC(i) END; ordinals[ord, j] := 0X; Out.String(ordinals[ord]); Out.Char(" "); INC(ord) END; Out.Ln(); Out.String("Largest ordinal in ordinals expressed as string is "); Out.String(ordinals[nOrdinals-1]); Out.String(" "); Out.Ln(); END BuildOrdinals0; (* Create an array with rows 0..nOrdinals-1 representing ordinals as characters. The ordinal stored in each row terminated by 0X. ordinals[ord, 0] is the big end. This character representation of ordinals is used for HTML character references and for vertical offset. This version counts without arithmetic. *) PROCEDURE BuildOrdinals(VAR ordinals: OrdinalStrings; radix: Integer); VAR ord, i, j: Integer; n: Integer; (* Number of characters in nnn used to represent ord. *) nnn: ARRAY 4 OF CHAR; (* An ordinal as a string of characters beginning from the little end. *) carry: BOOLEAN; BEGIN ord := 0; nnn[0] := "0"; n := 1; WHILE ord < nOrdinals DO (* Copy nnn into ordinals, reversing order of digits. *) i := 0; j := n; ordinals[ord, n] := 0X; WHILE i < n DO DEC(j); ordinals[ord, j] := nnn[i]; INC(i) END; (* Increment nnn and ord. *) i := 0; carry := TRUE; WHILE i < n DO IF carry THEN CASE nnn[i] OF | "0": nnn[i] := "1"; carry := FALSE | "1": nnn[i] := "2"; carry := FALSE | "2": nnn[i] := "3"; carry := FALSE | "3": nnn[i] := "4"; carry := FALSE | "4": nnn[i] := "5"; carry := FALSE | "5": nnn[i] := "6"; carry := FALSE | "6": nnn[i] := "7"; carry := FALSE | "7": nnn[i] := "8"; carry := FALSE | "8": nnn[i] := "9"; carry := FALSE | "9": nnn[i] := "0"; carry := TRUE ELSE Texts.WriteString(Log, "Mediawiki.BuildOrdinals1: nnn["); Texts.WriteInt(Log, i, 0); Texts.WriteString(Log, "] = "); Texts.Write(Log, nnn[i]); Texts.WriteString(Log, "not not a recognized CASE. "); Texts.WriteLn(Log); Texts.Append(Oberon.Log, Log.buf) END END; (* IF carry *) INC(i) END; (* WHILE i < n *) (* Now i = n *) IF carry THEN nnn[i] := "1"; INC(n) END; Out.String(ordinals[ord]); Out.Char(" "); INC(ord) END; (* WHILE ord *) Out.Ln(); Out.String("Largest ordinal in ordinals expressed as string is "); Out.String(ordinals[nOrdinals-1]); Out.String(" "); Out.Ln(); END BuildOrdinals; PROCEDURE InitAttr(); (* Initialize attributes with values never realized in a Text. *) BEGIN globalAttr.fntName[0] := "a"; globalAttr.fntName[1] := 0X; globalAttr.typeface[0] := "a"; globalAttr.typeface[1] := 0X; globalAttr.size := 0; globalAttr.weight := "a"; globalAttr.style := "a"; globalAttr.col := -1; globalAttr.voff := MAX(Integer); END InitAttr; BEGIN Texts.OpenWriter(Log); digits := "0123456789ABCDEF"; suffixArray := MediaWikiSuffix; BuildOrdinals(decimals, ten); (* BuildOrdinals(hexaDecimals, sixteen); *) Out.String("Fonts.Default.name = "); Out.String(Fonts.Default.name); Out.Ln(); i := 0; WHILE (Fonts.Default.name[i] < "0") OR ("9" < Fonts.Default.name[i]) DO INC(i) END; defaultSize := 0; WHILE ("/" < Fonts.Default.name[i]) & (Fonts.Default.name[i] < ":") DO defaultSize := (10 * defaultSize) + ORD(Fonts.Default.name[i]) - ORD("0"); INC(i) END; Out.String("Oberon.Fonts.Default.name => defaultSize = "); Out.Int(defaultSize, 0); Out.Ln(); NEW(mwT) END MediaWiki. MediaWiki.Markup * MediaWiki.Markup Oberon.MediaWiki.Mod ~ MediaWiki.Markup t tt ~ System.DeleteFiles Oberon.MediaWiki.Mod.mw ~ Compiler.Compile *
{'wiki_source': 'wikibooks', 'other_info': "{'content_model': 'wikitext', 'language': 'en', 'title': 'Oberon/ETH Oberon/MediaWiki.Mod', 'type': 'text'}"}