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// Scintilla source code edit control
/** @file LexNsis.cxx
** Lexer for NSIS
**/
// Copyright 2003 - 2005 by Angelo Mandato <angelo [at] spaceblue [dot] com>
// Last Updated: 03/13/2005
// The License.txt file describes the conditions under which this software may be distributed.
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
#include <assert.h>
#include <ctype.h>
#include "ILexer.h"
#include "Scintilla.h"
#include "SciLexer.h"
#include "WordList.h"
#include "LexAccessor.h"
#include "Accessor.h"
#include "StyleContext.h"
#include "CharacterSet.h"
#include "LexerModule.h"
#ifdef SCI_NAMESPACE
using namespace Scintilla;
#endif
/*
// located in SciLexer.h
#define SCLEX_NSIS 43
#define SCE_NSIS_DEFAULT 0
#define SCE_NSIS_COMMENT 1
#define SCE_NSIS_STRINGDQ 2
#define SCE_NSIS_STRINGLQ 3
#define SCE_NSIS_STRINGRQ 4
#define SCE_NSIS_FUNCTION 5
#define SCE_NSIS_VARIABLE 6
#define SCE_NSIS_LABEL 7
#define SCE_NSIS_USERDEFINED 8
#define SCE_NSIS_SECTIONDEF 9
#define SCE_NSIS_SUBSECTIONDEF 10
#define SCE_NSIS_IFDEFINEDEF 11
#define SCE_NSIS_MACRODEF 12
#define SCE_NSIS_STRINGVAR 13
#define SCE_NSIS_NUMBER 14
// ADDED for Scintilla v1.63
#define SCE_NSIS_SECTIONGROUP 15
#define SCE_NSIS_PAGEEX 16
#define SCE_NSIS_FUNCTIONDEF 17
#define SCE_NSIS_COMMENTBOX 18
*/
static bool isNsisNumber(char ch)
{
return (ch >= '0' && ch <= '9');
}
static bool isNsisChar(char ch)
{
return (ch == '.' ) || (ch == '_' ) || isNsisNumber(ch) || (ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z');
}
static bool isNsisLetter(char ch)
{
return (ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z');
}
static bool NsisNextLineHasElse(unsigned int start, unsigned int end, Accessor &styler)
{
int nNextLine = -1;
for( unsigned int i = start; i < end; i++ )
{
char cNext = styler.SafeGetCharAt( i );
if( cNext == '\n' )
{
nNextLine = i+1;
break;
}
}
if( nNextLine == -1 ) // We never found the next line...
return false;
for( unsigned int firstChar = nNextLine; firstChar < end; firstChar++ )
{
char cNext = styler.SafeGetCharAt( firstChar );
if( cNext == ' ' )
continue;
if( cNext == '\t' )
continue;
if( cNext == '!' )
{
if( styler.Match(firstChar, "!else") )
return true;
}
break;
}
return false;
}
static int NsisCmp( const char *s1, const char *s2, bool bIgnoreCase )
{
if( bIgnoreCase )
return CompareCaseInsensitive( s1, s2);
return strcmp( s1, s2 );
}
static int calculateFoldNsis(unsigned int start, unsigned int end, int foldlevel, Accessor &styler, bool bElse, bool foldUtilityCmd )
{
int style = styler.StyleAt(end);
// If the word is too long, it is not what we are looking for
if( end - start > 20 )
return foldlevel;
if( foldUtilityCmd )
{
// Check the style at this point, if it is not valid, then return zero
if( style != SCE_NSIS_FUNCTIONDEF && style != SCE_NSIS_SECTIONDEF &&
style != SCE_NSIS_SUBSECTIONDEF && style != SCE_NSIS_IFDEFINEDEF &&
style != SCE_NSIS_MACRODEF && style != SCE_NSIS_SECTIONGROUP &&
style != SCE_NSIS_PAGEEX )
return foldlevel;
}
else
{
if( style != SCE_NSIS_FUNCTIONDEF && style != SCE_NSIS_SECTIONDEF &&
style != SCE_NSIS_SUBSECTIONDEF && style != SCE_NSIS_SECTIONGROUP &&
style != SCE_NSIS_PAGEEX )
return foldlevel;
}
int newFoldlevel = foldlevel;
bool bIgnoreCase = false;
if( styler.GetPropertyInt("nsis.ignorecase") == 1 )
bIgnoreCase = true;
char s[20]; // The key word we are looking for has atmost 13 characters
s[0] = '\0';
for (unsigned int i = 0; i < end - start + 1 && i < 19; i++)
{
s[i] = static_cast<char>( styler[ start + i ] );
s[i + 1] = '\0';
}
if( s[0] == '!' )
{
if( NsisCmp(s, "!ifndef", bIgnoreCase) == 0 || NsisCmp(s, "!ifdef", bIgnoreCase ) == 0 || NsisCmp(s, "!ifmacrodef", bIgnoreCase ) == 0 || NsisCmp(s, "!ifmacrondef", bIgnoreCase ) == 0 || NsisCmp(s, "!if", bIgnoreCase ) == 0 || NsisCmp(s, "!macro", bIgnoreCase ) == 0 )
newFoldlevel++;
else if( NsisCmp(s, "!endif", bIgnoreCase) == 0 || NsisCmp(s, "!macroend", bIgnoreCase ) == 0 )
newFoldlevel--;
else if( bElse && NsisCmp(s, "!else", bIgnoreCase) == 0 )
newFoldlevel++;
}
else
{
if( NsisCmp(s, "Section", bIgnoreCase ) == 0 || NsisCmp(s, "SectionGroup", bIgnoreCase ) == 0 || NsisCmp(s, "Function", bIgnoreCase) == 0 || NsisCmp(s, "SubSection", bIgnoreCase ) == 0 || NsisCmp(s, "PageEx", bIgnoreCase ) == 0 )
newFoldlevel++;
else if( NsisCmp(s, "SectionGroupEnd", bIgnoreCase ) == 0 || NsisCmp(s, "SubSectionEnd", bIgnoreCase ) == 0 || NsisCmp(s, "FunctionEnd", bIgnoreCase) == 0 || NsisCmp(s, "SectionEnd", bIgnoreCase ) == 0 || NsisCmp(s, "PageExEnd", bIgnoreCase ) == 0 )
newFoldlevel--;
}
return newFoldlevel;
}
static int classifyWordNsis(unsigned int start, unsigned int end, WordList *keywordLists[], Accessor &styler )
{
bool bIgnoreCase = false;
if( styler.GetPropertyInt("nsis.ignorecase") == 1 )
bIgnoreCase = true;
bool bUserVars = false;
if( styler.GetPropertyInt("nsis.uservars") == 1 )
bUserVars = true;
char s[100];
s[0] = '\0';
s[1] = '\0';
WordList &Functions = *keywordLists[0];
WordList &Variables = *keywordLists[1];
WordList &Lables = *keywordLists[2];
WordList &UserDefined = *keywordLists[3];
for (unsigned int i = 0; i < end - start + 1 && i < 99; i++)
{
if( bIgnoreCase )
s[i] = static_cast<char>( tolower(styler[ start + i ] ) );
else
s[i] = static_cast<char>( styler[ start + i ] );
s[i + 1] = '\0';
}
// Check for special words...
if( NsisCmp(s, "!macro", bIgnoreCase ) == 0 || NsisCmp(s, "!macroend", bIgnoreCase) == 0 ) // Covers !macro and !macroend
return SCE_NSIS_MACRODEF;
if( NsisCmp(s, "!ifdef", bIgnoreCase ) == 0 || NsisCmp(s, "!ifndef", bIgnoreCase) == 0 || NsisCmp(s, "!endif", bIgnoreCase) == 0 ) // Covers !ifdef, !ifndef and !endif
return SCE_NSIS_IFDEFINEDEF;
if( NsisCmp(s, "!if", bIgnoreCase ) == 0 || NsisCmp(s, "!else", bIgnoreCase ) == 0 ) // Covers !if and else
return SCE_NSIS_IFDEFINEDEF;
if (NsisCmp(s, "!ifmacrodef", bIgnoreCase ) == 0 || NsisCmp(s, "!ifmacrondef", bIgnoreCase ) == 0 ) // Covers !ifmacrodef and !ifnmacrodef
return SCE_NSIS_IFDEFINEDEF;
if( NsisCmp(s, "SectionGroup", bIgnoreCase) == 0 || NsisCmp(s, "SectionGroupEnd", bIgnoreCase) == 0 ) // Covers SectionGroup and SectionGroupEnd
return SCE_NSIS_SECTIONGROUP;
if( NsisCmp(s, "Section", bIgnoreCase ) == 0 || NsisCmp(s, "SectionEnd", bIgnoreCase) == 0 ) // Covers Section and SectionEnd
return SCE_NSIS_SECTIONDEF;
if( NsisCmp(s, "SubSection", bIgnoreCase) == 0 || NsisCmp(s, "SubSectionEnd", bIgnoreCase) == 0 ) // Covers SubSection and SubSectionEnd
return SCE_NSIS_SUBSECTIONDEF;
if( NsisCmp(s, "PageEx", bIgnoreCase) == 0 || NsisCmp(s, "PageExEnd", bIgnoreCase) == 0 ) // Covers PageEx and PageExEnd
return SCE_NSIS_PAGEEX;
if( NsisCmp(s, "Function", bIgnoreCase) == 0 || NsisCmp(s, "FunctionEnd", bIgnoreCase) == 0 ) // Covers Function and FunctionEnd
return SCE_NSIS_FUNCTIONDEF;
if ( Functions.InList(s) )
return SCE_NSIS_FUNCTION;
if ( Variables.InList(s) )
return SCE_NSIS_VARIABLE;
if ( Lables.InList(s) )
return SCE_NSIS_LABEL;
if( UserDefined.InList(s) )
return SCE_NSIS_USERDEFINED;
if( strlen(s) > 3 )
{
if( s[1] == '{' && s[strlen(s)-1] == '}' )
return SCE_NSIS_VARIABLE;
}
// See if the variable is a user defined variable
if( s[0] == '$' && bUserVars )
{
bool bHasSimpleNsisChars = true;
for (unsigned int j = 1; j < end - start + 1 && j < 99; j++)
{
if( !isNsisChar( s[j] ) )
{
bHasSimpleNsisChars = false;
break;
}
}
if( bHasSimpleNsisChars )
return SCE_NSIS_VARIABLE;
}
// To check for numbers
if( isNsisNumber( s[0] ) )
{
bool bHasSimpleNsisNumber = true;
for (unsigned int j = 1; j < end - start + 1 && j < 99; j++)
{
if( !isNsisNumber( s[j] ) )
{
bHasSimpleNsisNumber = false;
break;
}
}
if( bHasSimpleNsisNumber )
return SCE_NSIS_NUMBER;
}
return SCE_NSIS_DEFAULT;
}
static void ColouriseNsisDoc(unsigned int startPos, int length, int, WordList *keywordLists[], Accessor &styler)
{
int state = SCE_NSIS_DEFAULT;
if( startPos > 0 )
state = styler.StyleAt(startPos-1); // Use the style from the previous line, usually default, but could be commentbox
styler.StartAt( startPos );
styler.GetLine( startPos );
unsigned int nLengthDoc = startPos + length;
styler.StartSegment( startPos );
char cCurrChar;
bool bVarInString = false;
bool bClassicVarInString = false;
unsigned int i;
for( i = startPos; i < nLengthDoc; i++ )
{
cCurrChar = styler.SafeGetCharAt( i );
char cNextChar = styler.SafeGetCharAt(i+1);
switch(state)
{
case SCE_NSIS_DEFAULT:
if( cCurrChar == ';' || cCurrChar == '#' ) // we have a comment line
{
styler.ColourTo(i-1, state );
state = SCE_NSIS_COMMENT;
break;
}
if( cCurrChar == '"' )
{
styler.ColourTo(i-1, state );
state = SCE_NSIS_STRINGDQ;
bVarInString = false;
bClassicVarInString = false;
break;
}
if( cCurrChar == '\'' )
{
styler.ColourTo(i-1, state );
state = SCE_NSIS_STRINGRQ;
bVarInString = false;
bClassicVarInString = false;
break;
}
if( cCurrChar == '`' )
{
styler.ColourTo(i-1, state );
state = SCE_NSIS_STRINGLQ;
bVarInString = false;
bClassicVarInString = false;
break;
}
// NSIS KeyWord,Function, Variable, UserDefined:
if( cCurrChar == '$' || isNsisChar(cCurrChar) || cCurrChar == '!' )
{
styler.ColourTo(i-1,state);
state = SCE_NSIS_FUNCTION;
// If it is a number, we must check and set style here first...
if( isNsisNumber(cCurrChar) && (cNextChar == '\t' || cNextChar == ' ' || cNextChar == '\r' || cNextChar == '\n' ) )
styler.ColourTo( i, SCE_NSIS_NUMBER);
break;
}
if( cCurrChar == '/' && cNextChar == '*' )
{
styler.ColourTo(i-1,state);
state = SCE_NSIS_COMMENTBOX;
break;
}
break;
case SCE_NSIS_COMMENT:
if( cNextChar == '\n' || cNextChar == '\r' )
{
// Special case:
if( cCurrChar == '\\' )
{
styler.ColourTo(i-2,state);
styler.ColourTo(i,SCE_NSIS_DEFAULT);
}
else
{
styler.ColourTo(i,state);
state = SCE_NSIS_DEFAULT;
}
}
break;
case SCE_NSIS_STRINGDQ:
case SCE_NSIS_STRINGLQ:
case SCE_NSIS_STRINGRQ:
if( styler.SafeGetCharAt(i-1) == '\\' && styler.SafeGetCharAt(i-2) == '$' )
break; // Ignore the next character, even if it is a quote of some sort
if( cCurrChar == '"' && state == SCE_NSIS_STRINGDQ )
{
styler.ColourTo(i,state);
state = SCE_NSIS_DEFAULT;
break;
}
if( cCurrChar == '`' && state == SCE_NSIS_STRINGLQ )
{
styler.ColourTo(i,state);
state = SCE_NSIS_DEFAULT;
break;
}
if( cCurrChar == '\'' && state == SCE_NSIS_STRINGRQ )
{
styler.ColourTo(i,state);
state = SCE_NSIS_DEFAULT;
break;
}
if( cNextChar == '\r' || cNextChar == '\n' )
{
int nCurLine = styler.GetLine(i+1);
int nBack = i;
// We need to check if the previous line has a \ in it...
bool bNextLine = false;
while( nBack > 0 )
{
if( styler.GetLine(nBack) != nCurLine )
break;
char cTemp = styler.SafeGetCharAt(nBack, 'a'); // Letter 'a' is safe here
if( cTemp == '\\' )
{
bNextLine = true;
break;
}
if( cTemp != '\r' && cTemp != '\n' && cTemp != '\t' && cTemp != ' ' )
break;
nBack--;
}
if( bNextLine )
{
styler.ColourTo(i+1,state);
}
if( bNextLine == false )
{
styler.ColourTo(i,state);
state = SCE_NSIS_DEFAULT;
}
}
break;
case SCE_NSIS_FUNCTION:
// NSIS KeyWord:
if( cCurrChar == '$' )
state = SCE_NSIS_DEFAULT;
else if( cCurrChar == '\\' && (cNextChar == 'n' || cNextChar == 'r' || cNextChar == 't' ) )
state = SCE_NSIS_DEFAULT;
else if( (isNsisChar(cCurrChar) && !isNsisChar( cNextChar) && cNextChar != '}') || cCurrChar == '}' )
{
state = classifyWordNsis( styler.GetStartSegment(), i, keywordLists, styler );
styler.ColourTo( i, state);
state = SCE_NSIS_DEFAULT;
}
else if( !isNsisChar( cCurrChar ) && cCurrChar != '{' && cCurrChar != '}' )
{
if( classifyWordNsis( styler.GetStartSegment(), i-1, keywordLists, styler) == SCE_NSIS_NUMBER )
styler.ColourTo( i-1, SCE_NSIS_NUMBER );
state = SCE_NSIS_DEFAULT;
if( cCurrChar == '"' )
{
state = SCE_NSIS_STRINGDQ;
bVarInString = false;
bClassicVarInString = false;
}
else if( cCurrChar == '`' )
{
state = SCE_NSIS_STRINGLQ;
bVarInString = false;
bClassicVarInString = false;
}
else if( cCurrChar == '\'' )
{
state = SCE_NSIS_STRINGRQ;
bVarInString = false;
bClassicVarInString = false;
}
else if( cCurrChar == '#' || cCurrChar == ';' )
{
state = SCE_NSIS_COMMENT;
}
}
break;
case SCE_NSIS_COMMENTBOX:
if( styler.SafeGetCharAt(i-1) == '*' && cCurrChar == '/' )
{
styler.ColourTo(i,state);
state = SCE_NSIS_DEFAULT;
}
break;
}
if( state == SCE_NSIS_COMMENT || state == SCE_NSIS_COMMENTBOX )
{
styler.ColourTo(i,state);
}
else if( state == SCE_NSIS_STRINGDQ || state == SCE_NSIS_STRINGLQ || state == SCE_NSIS_STRINGRQ )
{
bool bIngoreNextDollarSign = false;
bool bUserVars = false;
if( styler.GetPropertyInt("nsis.uservars") == 1 )
bUserVars = true;
if( bVarInString && cCurrChar == '$' )
{
bVarInString = false;
bIngoreNextDollarSign = true;
}
else if( bVarInString && cCurrChar == '\\' && (cNextChar == 'n' || cNextChar == 'r' || cNextChar == 't' || cNextChar == '"' || cNextChar == '`' || cNextChar == '\'' ) )
{
styler.ColourTo( i+1, SCE_NSIS_STRINGVAR);
bVarInString = false;
bIngoreNextDollarSign = false;
}
// Covers "$INSTDIR and user vars like $MYVAR"
else if( bVarInString && !isNsisChar(cNextChar) )
{
int nWordState = classifyWordNsis( styler.GetStartSegment(), i, keywordLists, styler);
if( nWordState == SCE_NSIS_VARIABLE )
styler.ColourTo( i, SCE_NSIS_STRINGVAR);
else if( bUserVars )
styler.ColourTo( i, SCE_NSIS_STRINGVAR);
bVarInString = false;
}
// Covers "${TEST}..."
else if( bClassicVarInString && cNextChar == '}' )
{
styler.ColourTo( i+1, SCE_NSIS_STRINGVAR);
bClassicVarInString = false;
}
// Start of var in string
if( !bIngoreNextDollarSign && cCurrChar == '$' && cNextChar == '{' )
{
styler.ColourTo( i-1, state);
bClassicVarInString = true;
bVarInString = false;
}
else if( !bIngoreNextDollarSign && cCurrChar == '$' )
{
styler.ColourTo( i-1, state);
bVarInString = true;
bClassicVarInString = false;
}
}
}
// Colourise remaining document
styler.ColourTo(nLengthDoc-1,state);
}
static void FoldNsisDoc(unsigned int startPos, int length, int, WordList *[], Accessor &styler)
{
// No folding enabled, no reason to continue...
if( styler.GetPropertyInt("fold") == 0 )
return;
bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) == 1;
bool foldUtilityCmd = styler.GetPropertyInt("nsis.foldutilcmd", 1) == 1;
bool blockComment = false;
int lineCurrent = styler.GetLine(startPos);
unsigned int safeStartPos = styler.LineStart( lineCurrent );
bool bArg1 = true;
int nWordStart = -1;
int levelCurrent = SC_FOLDLEVELBASE;
if (lineCurrent > 0)
levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
int levelNext = levelCurrent;
int style = styler.StyleAt(safeStartPos);
if( style == SCE_NSIS_COMMENTBOX )
{
if( styler.SafeGetCharAt(safeStartPos) == '/' && styler.SafeGetCharAt(safeStartPos+1) == '*' )
levelNext++;
blockComment = true;
}
for (unsigned int i = safeStartPos; i < startPos + length; i++)
{
char chCurr = styler.SafeGetCharAt(i);
style = styler.StyleAt(i);
if( blockComment && style != SCE_NSIS_COMMENTBOX )
{
levelNext--;
blockComment = false;
}
else if( !blockComment && style == SCE_NSIS_COMMENTBOX )
{
levelNext++;
blockComment = true;
}
if( bArg1 && !blockComment)
{
if( nWordStart == -1 && (isNsisLetter(chCurr) || chCurr == '!') )
{
nWordStart = i;
}
else if( isNsisLetter(chCurr) == false && nWordStart > -1 )
{
int newLevel = calculateFoldNsis( nWordStart, i-1, levelNext, styler, foldAtElse, foldUtilityCmd );
if( newLevel == levelNext )
{
if( foldAtElse && foldUtilityCmd )
{
if( NsisNextLineHasElse(i, startPos + length, styler) )
levelNext--;
}
}
else
levelNext = newLevel;
bArg1 = false;
}
}
if( chCurr == '\n' )
{
if( bArg1 && foldAtElse && foldUtilityCmd && !blockComment )
{
if( NsisNextLineHasElse(i, startPos + length, styler) )
levelNext--;
}
// If we are on a new line...
int levelUse = levelCurrent;
int lev = levelUse | levelNext << 16;
if (levelUse < levelNext )
lev |= SC_FOLDLEVELHEADERFLAG;
if (lev != styler.LevelAt(lineCurrent))
styler.SetLevel(lineCurrent, lev);
lineCurrent++;
levelCurrent = levelNext;
bArg1 = true; // New line, lets look at first argument again
nWordStart = -1;
}
}
int levelUse = levelCurrent;
int lev = levelUse | levelNext << 16;
if (levelUse < levelNext)
lev |= SC_FOLDLEVELHEADERFLAG;
if (lev != styler.LevelAt(lineCurrent))
styler.SetLevel(lineCurrent, lev);
}
static const char * const nsisWordLists[] = {
"Functions",
"Variables",
"Lables",
"UserDefined",
0, };
LexerModule lmNsis(SCLEX_NSIS, ColouriseNsisDoc, "nsis", FoldNsisDoc, nsisWordLists);

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