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-rw-r--r--src/LexTeX.cxx494
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diff --git a/src/LexTeX.cxx b/src/LexTeX.cxx
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--- a/src/LexTeX.cxx
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-// Scintilla source code edit control
-
-// File: LexTeX.cxx - general context conformant tex coloring scheme
-// Author: Hans Hagen - PRAGMA ADE - Hasselt NL - www.pragma-ade.com
-// Version: September 28, 2003
-
-// Copyright: 1998-2003 by Neil Hodgson <neilh@scintilla.org>
-// The License.txt file describes the conditions under which this software may be distributed.
-
-// This lexer is derived from the one written for the texwork environment (1999++) which in
-// turn is inspired on texedit (1991++) which finds its roots in wdt (1986).
-
-// If you run into strange boundary cases, just tell me and I'll look into it.
-
-
-// TeX Folding code added by instanton (soft_share@126.com) with borrowed code from VisualTeX source by Alex Romanenko.
-// Version: June 22, 2007
-
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include <stdio.h>
-#include <stdarg.h>
-
-#include "Platform.h"
-
-#include "PropSet.h"
-#include "Accessor.h"
-#include "KeyWords.h"
-#include "Scintilla.h"
-#include "SciLexer.h"
-#include "StyleContext.h"
-
-#ifdef SCI_NAMESPACE
-using namespace Scintilla;
-#endif
-
-// val SCE_TEX_DEFAULT = 0
-// val SCE_TEX_SPECIAL = 1
-// val SCE_TEX_GROUP = 2
-// val SCE_TEX_SYMBOL = 3
-// val SCE_TEX_COMMAND = 4
-// val SCE_TEX_TEXT = 5
-
-// Definitions in SciTEGlobal.properties:
-//
-// TeX Highlighting
-//
-// # Default
-// style.tex.0=fore:#7F7F00
-// # Special
-// style.tex.1=fore:#007F7F
-// # Group
-// style.tex.2=fore:#880000
-// # Symbol
-// style.tex.3=fore:#7F7F00
-// # Command
-// style.tex.4=fore:#008800
-// # Text
-// style.tex.5=fore:#000000
-
-// lexer.tex.interface.default=0
-// lexer.tex.comment.process=0
-
-// todo: lexer.tex.auto.if
-
-// Auxiliary functions:
-
-static inline bool endOfLine(Accessor &styler, unsigned int i) {
- return
- (styler[i] == '\n') || ((styler[i] == '\r') && (styler.SafeGetCharAt(i + 1) != '\n')) ;
-}
-
-static inline bool isTeXzero(int ch) {
- return
- (ch == '%') ;
-}
-
-static inline bool isTeXone(int ch) {
- return
- (ch == '[') || (ch == ']') || (ch == '=') || (ch == '#') ||
- (ch == '(') || (ch == ')') || (ch == '<') || (ch == '>') ||
- (ch == '"') ;
-}
-
-static inline bool isTeXtwo(int ch) {
- return
- (ch == '{') || (ch == '}') || (ch == '$') ;
-}
-
-static inline bool isTeXthree(int ch) {
- return
- (ch == '~') || (ch == '^') || (ch == '_') || (ch == '&') ||
- (ch == '-') || (ch == '+') || (ch == '\"') || (ch == '`') ||
- (ch == '/') || (ch == '|') || (ch == '%') ;
-}
-
-static inline bool isTeXfour(int ch) {
- return
- (ch == '\\') ;
-}
-
-static inline bool isTeXfive(int ch) {
- return
- ((ch >= 'a') && (ch <= 'z')) || ((ch >= 'A') && (ch <= 'Z')) ||
- (ch == '@') || (ch == '!') || (ch == '?') ;
-}
-
-static inline bool isTeXsix(int ch) {
- return
- (ch == ' ') ;
-}
-
-static inline bool isTeXseven(int ch) {
- return
- (ch == '^') ;
-}
-
-// Interface determination
-
-static int CheckTeXInterface(
- unsigned int startPos,
- int length,
- Accessor &styler,
- int defaultInterface) {
-
- char lineBuffer[1024] ;
- unsigned int linePos = 0 ;
-
- // some day we can make something lexer.tex.mapping=(all,0)(nl,1)(en,2)...
-
- if (styler.SafeGetCharAt(0) == '%') {
- for (unsigned int i = 0; i < startPos + length; i++) {
- lineBuffer[linePos++] = styler.SafeGetCharAt(i) ;
- if (endOfLine(styler, i) || (linePos >= sizeof(lineBuffer) - 1)) {
- lineBuffer[linePos] = '\0';
- if (strstr(lineBuffer, "interface=all")) {
- return 0 ;
- } else if (strstr(lineBuffer, "interface=tex")) {
- return 1 ;
- } else if (strstr(lineBuffer, "interface=nl")) {
- return 2 ;
- } else if (strstr(lineBuffer, "interface=en")) {
- return 3 ;
- } else if (strstr(lineBuffer, "interface=de")) {
- return 4 ;
- } else if (strstr(lineBuffer, "interface=cz")) {
- return 5 ;
- } else if (strstr(lineBuffer, "interface=it")) {
- return 6 ;
- } else if (strstr(lineBuffer, "interface=ro")) {
- return 7 ;
- } else if (strstr(lineBuffer, "interface=latex")) {
- // we will move latex cum suis up to 91+ when more keyword lists are supported
- return 8 ;
- } else if (styler.SafeGetCharAt(1) == 'D' && strstr(lineBuffer, "%D \\module")) {
- // better would be to limit the search to just one line
- return 3 ;
- } else {
- return defaultInterface ;
- }
- }
- }
- }
-
- return defaultInterface ;
-}
-
-static void ColouriseTeXDoc(
- unsigned int startPos,
- int length,
- int,
- WordList *keywordlists[],
- Accessor &styler) {
-
- styler.StartAt(startPos) ;
- styler.StartSegment(startPos) ;
-
- bool processComment = styler.GetPropertyInt("lexer.tex.comment.process", 0) == 1 ;
- bool useKeywords = styler.GetPropertyInt("lexer.tex.use.keywords", 1) == 1 ;
- bool autoIf = styler.GetPropertyInt("lexer.tex.auto.if", 1) == 1 ;
- int defaultInterface = styler.GetPropertyInt("lexer.tex.interface.default", 1) ;
-
- char key[100] ;
- int k ;
- bool newifDone = false ;
- bool inComment = false ;
-
- int currentInterface = CheckTeXInterface(startPos,length,styler,defaultInterface) ;
-
- if (currentInterface == 0) {
- useKeywords = false ;
- currentInterface = 1 ;
- }
-
- WordList &keywords = *keywordlists[currentInterface-1] ;
-
- StyleContext sc(startPos, length, SCE_TEX_TEXT, styler);
-
- bool going = sc.More() ; // needed because of a fuzzy end of file state
-
- for (; going; sc.Forward()) {
-
- if (! sc.More()) { going = false ; } // we need to go one behind the end of text
-
- if (inComment) {
- if (sc.atLineEnd) {
- sc.SetState(SCE_TEX_TEXT) ;
- newifDone = false ;
- inComment = false ;
- }
- } else {
- if (! isTeXfive(sc.ch)) {
- if (sc.state == SCE_TEX_COMMAND) {
- if (sc.LengthCurrent() == 1) { // \<noncstoken>
- if (isTeXseven(sc.ch) && isTeXseven(sc.chNext)) {
- sc.Forward(2) ; // \^^ and \^^<token>
- }
- sc.ForwardSetState(SCE_TEX_TEXT) ;
- } else {
- sc.GetCurrent(key, sizeof(key)-1) ;
- k = strlen(key) ;
- memmove(key,key+1,k) ; // shift left over escape token
- key[k] = '\0' ;
- k-- ;
- if (! keywords || ! useKeywords) {
- sc.SetState(SCE_TEX_COMMAND) ;
- newifDone = false ;
- } else if (k == 1) { //\<cstoken>
- sc.SetState(SCE_TEX_COMMAND) ;
- newifDone = false ;
- } else if (keywords.InList(key)) {
- sc.SetState(SCE_TEX_COMMAND) ;
- newifDone = autoIf && (strcmp(key,"newif") == 0) ;
- } else if (autoIf && ! newifDone && (key[0] == 'i') && (key[1] == 'f') && keywords.InList("if")) {
- sc.SetState(SCE_TEX_COMMAND) ;
- } else {
- sc.ChangeState(SCE_TEX_TEXT) ;
- sc.SetState(SCE_TEX_TEXT) ;
- newifDone = false ;
- }
- }
- }
- if (isTeXzero(sc.ch)) {
- sc.SetState(SCE_TEX_SYMBOL);
-
- if (!endOfLine(styler,sc.currentPos + 1))
- sc.ForwardSetState(SCE_TEX_DEFAULT) ;
-
- inComment = ! processComment ;
- newifDone = false ;
- } else if (isTeXseven(sc.ch) && isTeXseven(sc.chNext)) {
- sc.SetState(SCE_TEX_TEXT) ;
- sc.ForwardSetState(SCE_TEX_TEXT) ;
- } else if (isTeXone(sc.ch)) {
- sc.SetState(SCE_TEX_SPECIAL) ;
- newifDone = false ;
- } else if (isTeXtwo(sc.ch)) {
- sc.SetState(SCE_TEX_GROUP) ;
- newifDone = false ;
- } else if (isTeXthree(sc.ch)) {
- sc.SetState(SCE_TEX_SYMBOL) ;
- newifDone = false ;
- } else if (isTeXfour(sc.ch)) {
- sc.SetState(SCE_TEX_COMMAND) ;
- } else if (isTeXsix(sc.ch)) {
- sc.SetState(SCE_TEX_TEXT) ;
- } else if (sc.atLineEnd) {
- sc.SetState(SCE_TEX_TEXT) ;
- newifDone = false ;
- inComment = false ;
- } else {
- sc.SetState(SCE_TEX_TEXT) ;
- }
- } else if (sc.state != SCE_TEX_COMMAND) {
- sc.SetState(SCE_TEX_TEXT) ;
- }
- }
- }
- sc.ChangeState(SCE_TEX_TEXT) ;
- sc.Complete();
-
-}
-
-
-static inline bool isNumber(int ch) {
- return
- (ch == '0') || (ch == '1') || (ch == '2') ||
- (ch == '3') || (ch == '4') || (ch == '5') ||
- (ch == '6') || (ch == '7') || (ch == '8') || (ch == '9');
-}
-
-static inline bool isWordChar(int ch) {
- return ((ch >= 'a') && (ch <= 'z')) || ((ch >= 'A') && (ch <= 'Z'));
-}
-
-static int ParseTeXCommand(unsigned int pos, Accessor &styler, char *command)
-{
- int length=0;
- char ch=styler.SafeGetCharAt(pos+1);
-
- if(ch==',' || ch==':' || ch==';' || ch=='%'){
- command[0]=ch;
- command[1]=0;
- return 1;
- }
-
- // find end
- while(isWordChar(ch) && !isNumber(ch) && ch!='_' && ch!='.' && length<100){
- command[length]=ch;
- length++;
- ch=styler.SafeGetCharAt(pos+length+1);
- }
-
- command[length]='\0';
- if(!length) return 0;
- return length+1;
-}
-
-static int classifyFoldPointTeXPaired(const char* s) {
- int lev=0;
- if (!(isdigit(s[0]) || (s[0] == '.'))){
- if (strcmp(s, "begin")==0||strcmp(s,"FoldStart")==0||
- strcmp(s,"abstract")==0||strcmp(s,"unprotect")==0||
- strcmp(s,"title")==0||strncmp(s,"start",5)==0||strncmp(s,"Start",5)==0||
- strcmp(s,"documentclass")==0||strncmp(s,"if",2)==0
- )
- lev=1;
- if (strcmp(s, "end")==0||strcmp(s,"FoldStop")==0||
- strcmp(s,"maketitle")==0||strcmp(s,"protect")==0||
- strncmp(s,"stop",4)==0||strncmp(s,"Stop",4)==0||
- strcmp(s,"fi")==0
- )
- lev=-1;
- }
- return lev;
-}
-
-static int classifyFoldPointTeXUnpaired(const char* s) {
- int lev=0;
- if (!(isdigit(s[0]) || (s[0] == '.'))){
- if (strcmp(s,"part")==0||
- strcmp(s,"chapter")==0||
- strcmp(s,"section")==0||
- strcmp(s,"subsection")==0||
- strcmp(s,"subsubsection")==0||
- strcmp(s,"CJKfamily")==0||
- strcmp(s,"appendix")==0||
- strcmp(s,"Topic")==0||strcmp(s,"topic")==0||
- strcmp(s,"subject")==0||strcmp(s,"subsubject")==0||
- strcmp(s,"def")==0||strcmp(s,"gdef")==0||strcmp(s,"edef")==0||
- strcmp(s,"xdef")==0||strcmp(s,"framed")==0||
- strcmp(s,"frame")==0||
- strcmp(s,"foilhead")==0||strcmp(s,"overlays")==0||strcmp(s,"slide")==0
- ){
- lev=1;
- }
- }
- return lev;
-}
-
-static bool IsTeXCommentLine(int line, Accessor &styler) {
- int pos = styler.LineStart(line);
- int eol_pos = styler.LineStart(line + 1) - 1;
-
- int startpos = pos;
-
- while (startpos<eol_pos){
- char ch = styler[startpos];
- if (ch!='%' && ch!=' ') return false;
- else if (ch=='%') return true;
- startpos++;
- }
-
- return false;
-}
-
-// FoldTeXDoc: borrowed from VisualTeX with modifications
-
-static void FoldTexDoc(unsigned int startPos, int length, int, WordList *[], Accessor &styler)
-{
- bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
- unsigned int endPos = startPos+length;
- int visibleChars=0;
- int lineCurrent=styler.GetLine(startPos);
- int levelPrev=styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
- int levelCurrent=levelPrev;
- char chNext=styler[startPos];
- char buffer[100]="";
-
- for (unsigned int i=startPos; i < endPos; i++) {
- char ch=chNext;
- chNext=styler.SafeGetCharAt(i+1);
- bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
-
- if(ch=='\\') {
- ParseTeXCommand(i, styler, buffer);
- levelCurrent += classifyFoldPointTeXPaired(buffer)+classifyFoldPointTeXUnpaired(buffer);
- }
-
- if (levelCurrent > SC_FOLDLEVELBASE && ((ch == '\r' || ch=='\n') && (chNext == '\\'))) {
- ParseTeXCommand(i+1, styler, buffer);
- levelCurrent -= classifyFoldPointTeXUnpaired(buffer);
- }
-
- char chNext2;
- char chNext3;
- char chNext4;
- char chNext5;
- chNext2=styler.SafeGetCharAt(i+2);
- chNext3=styler.SafeGetCharAt(i+3);
- chNext4=styler.SafeGetCharAt(i+4);
- chNext5=styler.SafeGetCharAt(i+5);
-
- bool atEOfold = (ch == '%') &&
- (chNext == '%') && (chNext2=='}') &&
- (chNext3=='}')&& (chNext4=='-')&& (chNext5=='-');
-
- bool atBOfold = (ch == '%') &&
- (chNext == '%') && (chNext2=='-') &&
- (chNext3=='-')&& (chNext4=='{')&& (chNext5=='{');
-
- if(atBOfold){
- levelCurrent+=1;
- }
-
- if(atEOfold){
- levelCurrent-=1;
- }
-
- if(ch=='\\' && chNext=='['){
- levelCurrent+=1;
- }
-
- if(ch=='\\' && chNext==']'){
- levelCurrent-=1;
- }
-
- bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
-
- if (foldComment && atEOL && IsTeXCommentLine(lineCurrent, styler))
- {
- if (lineCurrent==0 && IsTeXCommentLine(lineCurrent + 1, styler)
- )
- levelCurrent++;
- else if (lineCurrent!=0 && !IsTeXCommentLine(lineCurrent - 1, styler)
- && IsTeXCommentLine(lineCurrent + 1, styler)
- )
- levelCurrent++;
- else if (lineCurrent!=0 && IsTeXCommentLine(lineCurrent - 1, styler) &&
- !IsTeXCommentLine(lineCurrent+1, styler))
- levelCurrent--;
- }
-
-//---------------------------------------------------------------------------------------------
-
- if (atEOL) {
- int lev = levelPrev;
- if (visibleChars == 0 && foldCompact)
- lev |= SC_FOLDLEVELWHITEFLAG;
- if ((levelCurrent > levelPrev) && (visibleChars > 0))
- lev |= SC_FOLDLEVELHEADERFLAG;
- if (lev != styler.LevelAt(lineCurrent)) {
- styler.SetLevel(lineCurrent, lev);
- }
- lineCurrent++;
- levelPrev = levelCurrent;
- visibleChars = 0;
- }
-
- if (!isspacechar(ch))
- visibleChars++;
- }
-
- // Fill in the real level of the next line, keeping the current flags as they will be filled in later
- int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
- styler.SetLevel(lineCurrent, levelPrev | flagsNext);
-}
-
-
-
-
-static const char * const texWordListDesc[] = {
- "TeX, eTeX, pdfTeX, Omega",
- "ConTeXt Dutch",
- "ConTeXt English",
- "ConTeXt German",
- "ConTeXt Czech",
- "ConTeXt Italian",
- "ConTeXt Romanian",
- 0,
-} ;
-
-LexerModule lmTeX(SCLEX_TEX, ColouriseTeXDoc, "tex", FoldTexDoc, texWordListDesc);
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-11 23:16:58 +0000