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227 lines
7.3 KiB
227 lines
7.3 KiB
// Scintilla source code edit control
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/** @file LexCrontab.cxx
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** Lexer to use with extended crontab files used by a powerful
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** Windows scheduler/event monitor/automation manager nnCron.
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** (http://nemtsev.eserv.ru/)
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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 <stdio.h>
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#include <stdarg.h>
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#include <assert.h>
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#include <ctype.h>
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#include "ILexer.h"
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#include "Scintilla.h"
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#include "SciLexer.h"
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#include "WordList.h"
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#include "LexAccessor.h"
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#include "Accessor.h"
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#include "StyleContext.h"
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#include "CharacterSet.h"
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#include "LexerModule.h"
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#ifdef SCI_NAMESPACE
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using namespace Scintilla;
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#endif
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static void ColouriseNncrontabDoc(unsigned int startPos, int length, int, WordList
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*keywordLists[], Accessor &styler)
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{
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int state = SCE_NNCRONTAB_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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// used when highliting environment variables inside quoted string:
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bool insideString = false;
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// this assumes that we have 3 keyword list in conf.properties
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WordList §ion = *keywordLists[0];
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WordList &keyword = *keywordLists[1];
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WordList &modifier = *keywordLists[2];
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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_NNCRONTAB_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_NNCRONTAB_DEFAULT);
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break;
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} else if( ch == '#' && styler.SafeGetCharAt(i+1) == '(') {
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// signals the start of a task...
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state = SCE_NNCRONTAB_TASK;
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styler.ColourTo(i,SCE_NNCRONTAB_TASK);
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}
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else if( ch == '\\' && (styler.SafeGetCharAt(i+1) == ' ' ||
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styler.SafeGetCharAt(i+1) == '\t')) {
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// signals the start of an extended comment...
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state = SCE_NNCRONTAB_COMMENT;
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styler.ColourTo(i,SCE_NNCRONTAB_COMMENT);
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} else if( ch == '#' ) {
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// signals the start of a plain comment...
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state = SCE_NNCRONTAB_COMMENT;
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styler.ColourTo(i,SCE_NNCRONTAB_COMMENT);
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} else if( ch == ')' && styler.SafeGetCharAt(i+1) == '#') {
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// signals the end of a task...
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state = SCE_NNCRONTAB_TASK;
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styler.ColourTo(i,SCE_NNCRONTAB_TASK);
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} else if( ch == '"') {
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state = SCE_NNCRONTAB_STRING;
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styler.ColourTo(i,SCE_NNCRONTAB_STRING);
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} else if( ch == '%') {
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// signals environment variables
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state = SCE_NNCRONTAB_ENVIRONMENT;
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styler.ColourTo(i,SCE_NNCRONTAB_ENVIRONMENT);
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} else if( ch == '<' && styler.SafeGetCharAt(i+1) == '%') {
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// signals environment variables
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state = SCE_NNCRONTAB_ENVIRONMENT;
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styler.ColourTo(i,SCE_NNCRONTAB_ENVIRONMENT);
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} else if( ch == '*' ) {
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// signals an asterisk
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// no state jump necessary for this simple case...
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styler.ColourTo(i,SCE_NNCRONTAB_ASTERISK);
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} else if( (isascii(ch) && isalpha(ch)) || ch == '<' ) {
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// signals the start of an identifier
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bufferCount = 0;
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buffer[bufferCount++] = ch;
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state = SCE_NNCRONTAB_IDENTIFIER;
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} else if( isascii(ch) && 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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state = SCE_NNCRONTAB_NUMBER;
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} else {
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// style it the default style..
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styler.ColourTo(i,SCE_NNCRONTAB_DEFAULT);
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}
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break;
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case SCE_NNCRONTAB_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_NNCRONTAB_DEFAULT;
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} else {
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styler.ColourTo(i,SCE_NNCRONTAB_COMMENT);
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}
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break;
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case SCE_NNCRONTAB_TASK:
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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_NNCRONTAB_DEFAULT;
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} else {
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styler.ColourTo(i,SCE_NNCRONTAB_TASK);
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}
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break;
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case SCE_NNCRONTAB_STRING:
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if( ch == '%' ) {
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state = SCE_NNCRONTAB_ENVIRONMENT;
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insideString = true;
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styler.ColourTo(i-1,SCE_NNCRONTAB_STRING);
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break;
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}
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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)!='\\') ||
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(ch == '\n') || (ch == '\r') ) {
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state = SCE_NNCRONTAB_DEFAULT;
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}
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styler.ColourTo(i,SCE_NNCRONTAB_STRING);
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break;
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case SCE_NNCRONTAB_ENVIRONMENT:
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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 == '%' && insideString ) {
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state = SCE_NNCRONTAB_STRING;
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insideString = false;
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break;
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}
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if( (ch == '%' && styler.SafeGetCharAt(i-1)!='\\')
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|| (ch == '\n') || (ch == '\r') || (ch == '>') ) {
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state = SCE_NNCRONTAB_DEFAULT;
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styler.ColourTo(i,SCE_NNCRONTAB_ENVIRONMENT);
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break;
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}
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styler.ColourTo(i+1,SCE_NNCRONTAB_ENVIRONMENT);
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break;
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case SCE_NNCRONTAB_IDENTIFIER:
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// stay in CONF_IDENTIFIER state until we find a non-alphanumeric
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if( (isascii(ch) && isalnum(ch)) || (ch == '_') || (ch == '-') || (ch == '/') ||
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(ch == '$') || (ch == '.') || (ch == '<') || (ch == '>') ||
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(ch == '@') ) {
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buffer[bufferCount++] = ch;
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} else {
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state = SCE_NNCRONTAB_DEFAULT;
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buffer[bufferCount] = '\0';
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// check if the buffer contains a keyword,
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// and highlight it if it is a keyword...
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if(section.InList(buffer)) {
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styler.ColourTo(i,SCE_NNCRONTAB_SECTION );
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} else if(keyword.InList(buffer)) {
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styler.ColourTo(i-1,SCE_NNCRONTAB_KEYWORD );
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} // else if(strchr(buffer,'/') || strchr(buffer,'.')) {
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// styler.ColourTo(i-1,SCE_NNCRONTAB_EXTENSION);
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// }
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else if(modifier.InList(buffer)) {
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styler.ColourTo(i-1,SCE_NNCRONTAB_MODIFIER );
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} else {
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styler.ColourTo(i-1,SCE_NNCRONTAB_DEFAULT);
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}
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// push back the faulty character
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chNext = styler[i--];
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}
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break;
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case SCE_NNCRONTAB_NUMBER:
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// stay in CONF_NUMBER state until we find a non-numeric
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if( isascii(ch) && isdigit(ch) /* || ch == '.' */ ) {
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buffer[bufferCount++] = ch;
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} else {
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state = SCE_NNCRONTAB_DEFAULT;
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buffer[bufferCount] = '\0';
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// Colourize here... (normal number)
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styler.ColourTo(i-1,SCE_NNCRONTAB_NUMBER);
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// push back a character
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chNext = styler[i--];
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}
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break;
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}
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}
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delete []buffer;
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}
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static const char * const cronWordListDesc[] = {
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"Section keywords and Forth words",
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"nnCrontab keywords",
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"Modifiers",
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0
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};
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LexerModule lmNncrontab(SCLEX_NNCRONTAB, ColouriseNncrontabDoc, "nncrontab", 0, cronWordListDesc);
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