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Viewing changes to sdk/wxscintilla/src/scintilla/src/LexConf.cxx

  • Committer: skiter
  • Date: 2008-04-13 02:17:50 UTC
  • Revision ID: skiter@anonymous-20080413021750-idptbpxvdui6ms6y
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sdk/wxscintilla/src/scintilla/src/LexConf.cxx
 
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// Scintilla source code edit control
 
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/** @file LexConf.cxx
 
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 ** Lexer for Apache Configuration Files.
 
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 **
 
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 ** First working version contributed by Ahmad Zawawi <zeus_go64@hotmail.com> on October 28, 2000.
 
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 ** i created this lexer because i needed something pretty when dealing
 
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 ** when Apache Configuration files...
 
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 **/
 
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// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
 
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// The License.txt file describes the conditions under which this software may be distributed.
 
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#include <stdlib.h>
 
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#include <string.h>
 
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#include <ctype.h>
 
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#include <stdio.h>
 
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#include <stdarg.h>
 
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#include "Platform.h"
 
19
 
 
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#include "PropSet.h"
 
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#include "Accessor.h"
 
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#include "KeyWords.h"
 
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#include "Scintilla.h"
 
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#include "SciLexer.h"
 
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static void ColouriseConfDoc(unsigned int startPos, int length, int, WordList *keywordLists[], Accessor &styler)
 
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{
 
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        int state = SCE_CONF_DEFAULT;
 
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        char chNext = styler[startPos];
 
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        int lengthDoc = startPos + length;
 
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        // create a buffer large enough to take the largest chunk...
 
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        char *buffer = new char[length];
 
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        int bufferCount = 0;
 
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        // this assumes that we have 2 keyword list in conf.properties
 
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        WordList &directives = *keywordLists[0];
 
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        WordList &params = *keywordLists[1];
 
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        // go through all provided text segment
 
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        // using the hand-written state machine shown below
 
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        styler.StartAt(startPos);
 
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        styler.StartSegment(startPos);
 
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        for (int i = startPos; i < lengthDoc; i++) {
 
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                char ch = chNext;
 
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                chNext = styler.SafeGetCharAt(i + 1);
 
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                if (styler.IsLeadByte(ch)) {
 
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                        chNext = styler.SafeGetCharAt(i + 2);
 
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                        i++;
 
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                        continue;
 
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                }
 
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                switch(state) {
 
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                        case SCE_CONF_DEFAULT:
 
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                                if( ch == '\n' || ch == '\r' || ch == '\t' || ch == ' ') {
 
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                                        // whitespace is simply ignored here...
 
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                                        styler.ColourTo(i,SCE_CONF_DEFAULT);
 
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                                        break;
 
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                                } else if( ch == '#' ) {
 
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                                        // signals the start of a comment...
 
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                                        state = SCE_CONF_COMMENT;
 
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                                        styler.ColourTo(i,SCE_CONF_COMMENT);
 
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                                } else if( ch == '.' /*|| ch == '/'*/) {
 
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                                        // signals the start of a file...
 
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                                        state = SCE_CONF_EXTENSION;
 
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                                        styler.ColourTo(i,SCE_CONF_EXTENSION);
 
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                                } else if( ch == '"') {
 
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                                        state = SCE_CONF_STRING;
 
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                                        styler.ColourTo(i,SCE_CONF_STRING);
 
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                                } else if( ispunct(ch) ) {
 
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                                        // signals an operator...
 
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                                        // no state jump necessary for this
 
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                                        // simple case...
 
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                                        styler.ColourTo(i,SCE_CONF_OPERATOR);
 
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                                } else if( isalpha(ch) ) {
 
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                                        // signals the start of an identifier
 
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                                        bufferCount = 0;
 
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                                        buffer[bufferCount++] = static_cast<char>(tolower(ch));
 
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                                        state = SCE_CONF_IDENTIFIER;
 
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                                } else if( isdigit(ch) ) {
 
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                                        // signals the start of a number
 
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                                        bufferCount = 0;
 
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                                        buffer[bufferCount++] = ch;
 
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                                        //styler.ColourTo(i,SCE_CONF_NUMBER);
 
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                                        state = SCE_CONF_NUMBER;
 
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                                } else {
 
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                                        // style it the default style..
 
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                                        styler.ColourTo(i,SCE_CONF_DEFAULT);
 
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                                }
 
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                                break;
 
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                        case SCE_CONF_COMMENT:
 
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                                // if we find a newline here,
 
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                                // we simply go to default state
 
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                                // else continue to work on it...
 
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                                if( ch == '\n' || ch == '\r' ) {
 
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                                        state = SCE_CONF_DEFAULT;
 
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                                } else {
 
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                                        styler.ColourTo(i,SCE_CONF_COMMENT);
 
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                                }
 
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                                break;
 
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                        case SCE_CONF_EXTENSION:
 
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                                // if we find a non-alphanumeric char,
 
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                                // we simply go to default state
 
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                                // else we're still dealing with an extension...
 
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                                if( isalnum(ch) || (ch == '_') ||
 
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                                        (ch == '-') || (ch == '$') ||
 
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                                        (ch == '/') || (ch == '.') || (ch == '*') )
 
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                                {
 
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                                        styler.ColourTo(i,SCE_CONF_EXTENSION);
 
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                                } else {
 
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                                        state = SCE_CONF_DEFAULT;
 
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                                        chNext = styler[i--];
 
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                                }
 
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                                break;
 
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                        case SCE_CONF_STRING:
 
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                                // if we find the end of a string char, we simply go to default state
 
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                                // else we're still dealing with an string...
 
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                                if( (ch == '"' && styler.SafeGetCharAt(i-1)!='\\') || (ch == '\n') || (ch == '\r') ) {
 
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                                        state = SCE_CONF_DEFAULT;
 
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                                }
 
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                                styler.ColourTo(i,SCE_CONF_STRING);
 
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                                break;
 
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                        case SCE_CONF_IDENTIFIER:
 
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                                // stay  in CONF_IDENTIFIER state until we find a non-alphanumeric
 
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                                if( isalnum(ch) || (ch == '_') || (ch == '-') || (ch == '/') || (ch == '$') || (ch == '.') || (ch == '*')) {
 
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                                        buffer[bufferCount++] = static_cast<char>(tolower(ch));
 
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                                } else {
 
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                                        state = SCE_CONF_DEFAULT;
 
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                                        buffer[bufferCount] = '\0';
 
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                                        // check if the buffer contains a keyword, and highlight it if it is a keyword...
 
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                                        if(directives.InList(buffer)) {
 
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                                                styler.ColourTo(i-1,SCE_CONF_DIRECTIVE );
 
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                                        } else if(params.InList(buffer)) {
 
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                                                styler.ColourTo(i-1,SCE_CONF_PARAMETER );
 
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                                        } else if(strchr(buffer,'/') || strchr(buffer,'.')) {
 
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                                                styler.ColourTo(i-1,SCE_CONF_EXTENSION);
 
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                                        } else {
 
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                                                styler.ColourTo(i-1,SCE_CONF_DEFAULT);
 
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                                        }
 
144
 
 
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                                        // push back the faulty character
 
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                                        chNext = styler[i--];
 
147
 
 
148
                                }
 
149
                                break;
 
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                        case SCE_CONF_NUMBER:
 
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                                // stay  in CONF_NUMBER state until we find a non-numeric
 
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                                if( isdigit(ch) || ch == '.') {
 
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                                        buffer[bufferCount++] = ch;
 
155
                                } else {
 
156
                                        state = SCE_CONF_DEFAULT;
 
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                                        buffer[bufferCount] = '\0';
 
158
 
 
159
                                        // Colourize here...
 
160
                                        if( strchr(buffer,'.') ) {
 
161
                                                // it is an IP address...
 
162
                                                styler.ColourTo(i-1,SCE_CONF_IP);
 
163
                                        } else {
 
164
                                                // normal number
 
165
                                                styler.ColourTo(i-1,SCE_CONF_NUMBER);
 
166
                                        }
 
167
 
 
168
                                        // push back a character
 
169
                                        chNext = styler[i--];
 
170
                                }
 
171
                                break;
 
172
 
 
173
                }
 
174
        }
 
175
        delete []buffer;
 
176
}
 
177
 
 
178
static const char * const confWordListDesc[] = {
 
179
        "Directives",
 
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        "Parameters",
 
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        0
 
182
};
 
183
 
 
184
LexerModule lmConf(SCLEX_CONF, ColouriseConfDoc, "conf", 0, confWordListDesc);