499 lines
17 KiB
C++
499 lines
17 KiB
C++
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// Scintilla source code edit control
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/** @file LexBatch.cxx
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** Lexer for batch 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 <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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using namespace Scintilla;
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static bool Is0To9(char ch) {
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return (ch >= '0') && (ch <= '9');
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}
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static bool IsAlphabetic(int ch) {
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return IsASCII(ch) && isalpha(ch);
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}
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static inline bool AtEOL(Accessor &styler, Sci_PositionU i) {
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return (styler[i] == '\n') ||
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((styler[i] == '\r') && (styler.SafeGetCharAt(i + 1) != '\n'));
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}
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// Tests for BATCH Operators
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static bool IsBOperator(char ch) {
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return (ch == '=') || (ch == '+') || (ch == '>') || (ch == '<') ||
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(ch == '|') || (ch == '?') || (ch == '*');
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}
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// Tests for BATCH Separators
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static bool IsBSeparator(char ch) {
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return (ch == '\\') || (ch == '.') || (ch == ';') ||
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(ch == '\"') || (ch == '\'') || (ch == '/');
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}
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static void ColouriseBatchLine(
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char *lineBuffer,
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Sci_PositionU lengthLine,
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Sci_PositionU startLine,
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Sci_PositionU endPos,
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WordList *keywordlists[],
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Accessor &styler) {
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Sci_PositionU offset = 0; // Line Buffer Offset
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Sci_PositionU cmdLoc; // External Command / Program Location
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char wordBuffer[81]; // Word Buffer - large to catch long paths
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Sci_PositionU wbl; // Word Buffer Length
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Sci_PositionU wbo; // Word Buffer Offset - also Special Keyword Buffer Length
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WordList &keywords = *keywordlists[0]; // Internal Commands
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WordList &keywords2 = *keywordlists[1]; // External Commands (optional)
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// CHOICE, ECHO, GOTO, PROMPT and SET have Default Text that may contain Regular Keywords
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// Toggling Regular Keyword Checking off improves readability
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// Other Regular Keywords and External Commands / Programs might also benefit from toggling
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// Need a more robust algorithm to properly toggle Regular Keyword Checking
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bool continueProcessing = true; // Used to toggle Regular Keyword Checking
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// Special Keywords are those that allow certain characters without whitespace after the command
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// Examples are: cd. cd\ md. rd. dir| dir> echo: echo. path=
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// Special Keyword Buffer used to determine if the first n characters is a Keyword
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char sKeywordBuffer[10]; // Special Keyword Buffer
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bool sKeywordFound; // Exit Special Keyword for-loop if found
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// Skip initial spaces
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while ((offset < lengthLine) && (isspacechar(lineBuffer[offset]))) {
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offset++;
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}
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// Colorize Default Text
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styler.ColourTo(startLine + offset - 1, SCE_BAT_DEFAULT);
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// Set External Command / Program Location
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cmdLoc = offset;
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// Check for Fake Label (Comment) or Real Label - return if found
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if (lineBuffer[offset] == ':') {
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if (lineBuffer[offset + 1] == ':') {
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// Colorize Fake Label (Comment) - :: is similar to REM, see http://content.techweb.com/winmag/columns/explorer/2000/21.htm
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styler.ColourTo(endPos, SCE_BAT_COMMENT);
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} else {
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// Colorize Real Label
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styler.ColourTo(endPos, SCE_BAT_LABEL);
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}
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return;
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// Check for Drive Change (Drive Change is internal command) - return if found
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} else if ((IsAlphabetic(lineBuffer[offset])) &&
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(lineBuffer[offset + 1] == ':') &&
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((isspacechar(lineBuffer[offset + 2])) ||
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(((lineBuffer[offset + 2] == '\\')) &&
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(isspacechar(lineBuffer[offset + 3]))))) {
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// Colorize Regular Keyword
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styler.ColourTo(endPos, SCE_BAT_WORD);
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return;
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}
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// Check for Hide Command (@ECHO OFF/ON)
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if (lineBuffer[offset] == '@') {
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styler.ColourTo(startLine + offset, SCE_BAT_HIDE);
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offset++;
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}
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// Skip next spaces
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while ((offset < lengthLine) && (isspacechar(lineBuffer[offset]))) {
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offset++;
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}
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// Read remainder of line word-at-a-time or remainder-of-word-at-a-time
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while (offset < lengthLine) {
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if (offset > startLine) {
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// Colorize Default Text
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styler.ColourTo(startLine + offset - 1, SCE_BAT_DEFAULT);
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}
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// Copy word from Line Buffer into Word Buffer
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wbl = 0;
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for (; offset < lengthLine && wbl < 80 &&
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!isspacechar(lineBuffer[offset]); wbl++, offset++) {
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wordBuffer[wbl] = static_cast<char>(tolower(lineBuffer[offset]));
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}
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wordBuffer[wbl] = '\0';
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wbo = 0;
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// Check for Comment - return if found
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if (CompareCaseInsensitive(wordBuffer, "rem") == 0) {
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styler.ColourTo(endPos, SCE_BAT_COMMENT);
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return;
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}
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// Check for Separator
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if (IsBSeparator(wordBuffer[0])) {
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// Check for External Command / Program
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if ((cmdLoc == offset - wbl) &&
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((wordBuffer[0] == ':') ||
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(wordBuffer[0] == '\\') ||
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(wordBuffer[0] == '.'))) {
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// Reset Offset to re-process remainder of word
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offset -= (wbl - 1);
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// Colorize External Command / Program
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if (!keywords2) {
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styler.ColourTo(startLine + offset - 1, SCE_BAT_COMMAND);
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} else if (keywords2.InList(wordBuffer)) {
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styler.ColourTo(startLine + offset - 1, SCE_BAT_COMMAND);
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} else {
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styler.ColourTo(startLine + offset - 1, SCE_BAT_DEFAULT);
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}
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// Reset External Command / Program Location
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cmdLoc = offset;
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} else {
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// Reset Offset to re-process remainder of word
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offset -= (wbl - 1);
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// Colorize Default Text
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styler.ColourTo(startLine + offset - 1, SCE_BAT_DEFAULT);
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}
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// Check for Regular Keyword in list
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} else if ((keywords.InList(wordBuffer)) &&
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(continueProcessing)) {
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// ECHO, GOTO, PROMPT and SET require no further Regular Keyword Checking
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if ((CompareCaseInsensitive(wordBuffer, "echo") == 0) ||
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(CompareCaseInsensitive(wordBuffer, "goto") == 0) ||
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(CompareCaseInsensitive(wordBuffer, "prompt") == 0) ||
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(CompareCaseInsensitive(wordBuffer, "set") == 0)) {
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continueProcessing = false;
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}
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// Identify External Command / Program Location for ERRORLEVEL, and EXIST
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if ((CompareCaseInsensitive(wordBuffer, "errorlevel") == 0) ||
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(CompareCaseInsensitive(wordBuffer, "exist") == 0)) {
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// Reset External Command / Program Location
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cmdLoc = offset;
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// Skip next spaces
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while ((cmdLoc < lengthLine) &&
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(isspacechar(lineBuffer[cmdLoc]))) {
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cmdLoc++;
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}
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// Skip comparison
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while ((cmdLoc < lengthLine) &&
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(!isspacechar(lineBuffer[cmdLoc]))) {
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cmdLoc++;
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}
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// Skip next spaces
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while ((cmdLoc < lengthLine) &&
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(isspacechar(lineBuffer[cmdLoc]))) {
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cmdLoc++;
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}
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// Identify External Command / Program Location for CALL, DO, LOADHIGH and LH
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} else if ((CompareCaseInsensitive(wordBuffer, "call") == 0) ||
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(CompareCaseInsensitive(wordBuffer, "do") == 0) ||
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(CompareCaseInsensitive(wordBuffer, "loadhigh") == 0) ||
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(CompareCaseInsensitive(wordBuffer, "lh") == 0)) {
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// Reset External Command / Program Location
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cmdLoc = offset;
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// Skip next spaces
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while ((cmdLoc < lengthLine) &&
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(isspacechar(lineBuffer[cmdLoc]))) {
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cmdLoc++;
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}
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}
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// Colorize Regular keyword
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styler.ColourTo(startLine + offset - 1, SCE_BAT_WORD);
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// No need to Reset Offset
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// Check for Special Keyword in list, External Command / Program, or Default Text
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} else if ((wordBuffer[0] != '%') &&
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(wordBuffer[0] != '!') &&
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(!IsBOperator(wordBuffer[0])) &&
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(continueProcessing)) {
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// Check for Special Keyword
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// Affected Commands are in Length range 2-6
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// Good that ERRORLEVEL, EXIST, CALL, DO, LOADHIGH, and LH are unaffected
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sKeywordFound = false;
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for (Sci_PositionU keywordLength = 2; keywordLength < wbl && keywordLength < 7 && !sKeywordFound; keywordLength++) {
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wbo = 0;
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// Copy Keyword Length from Word Buffer into Special Keyword Buffer
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for (; wbo < keywordLength; wbo++) {
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sKeywordBuffer[wbo] = static_cast<char>(wordBuffer[wbo]);
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}
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sKeywordBuffer[wbo] = '\0';
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// Check for Special Keyword in list
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if ((keywords.InList(sKeywordBuffer)) &&
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((IsBOperator(wordBuffer[wbo])) ||
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(IsBSeparator(wordBuffer[wbo])))) {
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sKeywordFound = true;
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// ECHO requires no further Regular Keyword Checking
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if (CompareCaseInsensitive(sKeywordBuffer, "echo") == 0) {
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continueProcessing = false;
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}
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// Colorize Special Keyword as Regular Keyword
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styler.ColourTo(startLine + offset - 1 - (wbl - wbo), SCE_BAT_WORD);
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// Reset Offset to re-process remainder of word
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offset -= (wbl - wbo);
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}
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}
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// Check for External Command / Program or Default Text
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if (!sKeywordFound) {
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wbo = 0;
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// Check for External Command / Program
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if (cmdLoc == offset - wbl) {
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// Read up to %, Operator or Separator
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while ((wbo < wbl) &&
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(wordBuffer[wbo] != '%') &&
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(wordBuffer[wbo] != '!') &&
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(!IsBOperator(wordBuffer[wbo])) &&
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(!IsBSeparator(wordBuffer[wbo]))) {
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wbo++;
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}
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// Reset External Command / Program Location
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cmdLoc = offset - (wbl - wbo);
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// Reset Offset to re-process remainder of word
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offset -= (wbl - wbo);
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// CHOICE requires no further Regular Keyword Checking
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if (CompareCaseInsensitive(wordBuffer, "choice") == 0) {
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continueProcessing = false;
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}
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// Check for START (and its switches) - What follows is External Command \ Program
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if (CompareCaseInsensitive(wordBuffer, "start") == 0) {
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// Reset External Command / Program Location
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cmdLoc = offset;
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// Skip next spaces
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while ((cmdLoc < lengthLine) &&
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(isspacechar(lineBuffer[cmdLoc]))) {
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cmdLoc++;
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}
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// Reset External Command / Program Location if command switch detected
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if (lineBuffer[cmdLoc] == '/') {
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// Skip command switch
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while ((cmdLoc < lengthLine) &&
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(!isspacechar(lineBuffer[cmdLoc]))) {
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cmdLoc++;
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}
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// Skip next spaces
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while ((cmdLoc < lengthLine) &&
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(isspacechar(lineBuffer[cmdLoc]))) {
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cmdLoc++;
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}
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}
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}
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// Colorize External Command / Program
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if (!keywords2) {
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styler.ColourTo(startLine + offset - 1, SCE_BAT_COMMAND);
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} else if (keywords2.InList(wordBuffer)) {
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styler.ColourTo(startLine + offset - 1, SCE_BAT_COMMAND);
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} else {
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styler.ColourTo(startLine + offset - 1, SCE_BAT_DEFAULT);
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}
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// No need to Reset Offset
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// Check for Default Text
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} else {
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// Read up to %, Operator or Separator
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while ((wbo < wbl) &&
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(wordBuffer[wbo] != '%') &&
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(wordBuffer[wbo] != '!') &&
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(!IsBOperator(wordBuffer[wbo])) &&
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(!IsBSeparator(wordBuffer[wbo]))) {
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wbo++;
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}
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// Colorize Default Text
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styler.ColourTo(startLine + offset - 1 - (wbl - wbo), SCE_BAT_DEFAULT);
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// Reset Offset to re-process remainder of word
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offset -= (wbl - wbo);
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}
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}
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// Check for Argument (%n), Environment Variable (%x...%) or Local Variable (%%a)
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} else if (wordBuffer[0] == '%') {
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// Colorize Default Text
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styler.ColourTo(startLine + offset - 1 - wbl, SCE_BAT_DEFAULT);
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wbo++;
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// Search to end of word for second % (can be a long path)
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while ((wbo < wbl) &&
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(wordBuffer[wbo] != '%') &&
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(!IsBOperator(wordBuffer[wbo])) &&
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(!IsBSeparator(wordBuffer[wbo]))) {
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wbo++;
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}
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// Check for Argument (%n) or (%*)
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if (((Is0To9(wordBuffer[1])) || (wordBuffer[1] == '*')) &&
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(wordBuffer[wbo] != '%')) {
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// Check for External Command / Program
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if (cmdLoc == offset - wbl) {
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cmdLoc = offset - (wbl - 2);
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}
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// Colorize Argument
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styler.ColourTo(startLine + offset - 1 - (wbl - 2), SCE_BAT_IDENTIFIER);
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// Reset Offset to re-process remainder of word
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offset -= (wbl - 2);
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// Check for Expanded Argument (%~...) / Variable (%%~...)
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} else if (((wbl > 1) && (wordBuffer[1] == '~')) ||
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((wbl > 2) && (wordBuffer[1] == '%') && (wordBuffer[2] == '~'))) {
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// Check for External Command / Program
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if (cmdLoc == offset - wbl) {
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cmdLoc = offset - (wbl - wbo);
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}
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// Colorize Expanded Argument / Variable
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styler.ColourTo(startLine + offset - 1 - (wbl - wbo), SCE_BAT_IDENTIFIER);
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// Reset Offset to re-process remainder of word
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offset -= (wbl - wbo);
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// Check for Environment Variable (%x...%)
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|
|
} else if ((wordBuffer[1] != '%') &&
|
||
|
|
(wordBuffer[wbo] == '%')) {
|
||
|
|
wbo++;
|
||
|
|
// Check for External Command / Program
|
||
|
|
if (cmdLoc == offset - wbl) {
|
||
|
|
cmdLoc = offset - (wbl - wbo);
|
||
|
|
}
|
||
|
|
// Colorize Environment Variable
|
||
|
|
styler.ColourTo(startLine + offset - 1 - (wbl - wbo), SCE_BAT_IDENTIFIER);
|
||
|
|
// Reset Offset to re-process remainder of word
|
||
|
|
offset -= (wbl - wbo);
|
||
|
|
// Check for Local Variable (%%a)
|
||
|
|
} else if (
|
||
|
|
(wbl > 2) &&
|
||
|
|
(wordBuffer[1] == '%') &&
|
||
|
|
(wordBuffer[2] != '%') &&
|
||
|
|
(!IsBOperator(wordBuffer[2])) &&
|
||
|
|
(!IsBSeparator(wordBuffer[2]))) {
|
||
|
|
// Check for External Command / Program
|
||
|
|
if (cmdLoc == offset - wbl) {
|
||
|
|
cmdLoc = offset - (wbl - 3);
|
||
|
|
}
|
||
|
|
// Colorize Local Variable
|
||
|
|
styler.ColourTo(startLine + offset - 1 - (wbl - 3), SCE_BAT_IDENTIFIER);
|
||
|
|
// Reset Offset to re-process remainder of word
|
||
|
|
offset -= (wbl - 3);
|
||
|
|
}
|
||
|
|
// Check for Environment Variable (!x...!)
|
||
|
|
} else if (wordBuffer[0] == '!') {
|
||
|
|
// Colorize Default Text
|
||
|
|
styler.ColourTo(startLine + offset - 1 - wbl, SCE_BAT_DEFAULT);
|
||
|
|
wbo++;
|
||
|
|
// Search to end of word for second ! (can be a long path)
|
||
|
|
while ((wbo < wbl) &&
|
||
|
|
(wordBuffer[wbo] != '!') &&
|
||
|
|
(!IsBOperator(wordBuffer[wbo])) &&
|
||
|
|
(!IsBSeparator(wordBuffer[wbo]))) {
|
||
|
|
wbo++;
|
||
|
|
}
|
||
|
|
if (wordBuffer[wbo] == '!') {
|
||
|
|
wbo++;
|
||
|
|
// Check for External Command / Program
|
||
|
|
if (cmdLoc == offset - wbl) {
|
||
|
|
cmdLoc = offset - (wbl - wbo);
|
||
|
|
}
|
||
|
|
// Colorize Environment Variable
|
||
|
|
styler.ColourTo(startLine + offset - 1 - (wbl - wbo), SCE_BAT_IDENTIFIER);
|
||
|
|
// Reset Offset to re-process remainder of word
|
||
|
|
offset -= (wbl - wbo);
|
||
|
|
}
|
||
|
|
// Check for Operator
|
||
|
|
} else if (IsBOperator(wordBuffer[0])) {
|
||
|
|
// Colorize Default Text
|
||
|
|
styler.ColourTo(startLine + offset - 1 - wbl, SCE_BAT_DEFAULT);
|
||
|
|
// Check for Comparison Operator
|
||
|
|
if ((wordBuffer[0] == '=') && (wordBuffer[1] == '=')) {
|
||
|
|
// Identify External Command / Program Location for IF
|
||
|
|
cmdLoc = offset;
|
||
|
|
// Skip next spaces
|
||
|
|
while ((cmdLoc < lengthLine) &&
|
||
|
|
(isspacechar(lineBuffer[cmdLoc]))) {
|
||
|
|
cmdLoc++;
|
||
|
|
}
|
||
|
|
// Colorize Comparison Operator
|
||
|
|
styler.ColourTo(startLine + offset - 1 - (wbl - 2), SCE_BAT_OPERATOR);
|
||
|
|
// Reset Offset to re-process remainder of word
|
||
|
|
offset -= (wbl - 2);
|
||
|
|
// Check for Pipe Operator
|
||
|
|
} else if (wordBuffer[0] == '|') {
|
||
|
|
// Reset External Command / Program Location
|
||
|
|
cmdLoc = offset - wbl + 1;
|
||
|
|
// Skip next spaces
|
||
|
|
while ((cmdLoc < lengthLine) &&
|
||
|
|
(isspacechar(lineBuffer[cmdLoc]))) {
|
||
|
|
cmdLoc++;
|
||
|
|
}
|
||
|
|
// Colorize Pipe Operator
|
||
|
|
styler.ColourTo(startLine + offset - 1 - (wbl - 1), SCE_BAT_OPERATOR);
|
||
|
|
// Reset Offset to re-process remainder of word
|
||
|
|
offset -= (wbl - 1);
|
||
|
|
// Check for Other Operator
|
||
|
|
} else {
|
||
|
|
// Check for > Operator
|
||
|
|
if (wordBuffer[0] == '>') {
|
||
|
|
// Turn Keyword and External Command / Program checking back on
|
||
|
|
continueProcessing = true;
|
||
|
|
}
|
||
|
|
// Colorize Other Operator
|
||
|
|
styler.ColourTo(startLine + offset - 1 - (wbl - 1), SCE_BAT_OPERATOR);
|
||
|
|
// Reset Offset to re-process remainder of word
|
||
|
|
offset -= (wbl - 1);
|
||
|
|
}
|
||
|
|
// Check for Default Text
|
||
|
|
} else {
|
||
|
|
// Read up to %, Operator or Separator
|
||
|
|
while ((wbo < wbl) &&
|
||
|
|
(wordBuffer[wbo] != '%') &&
|
||
|
|
(wordBuffer[wbo] != '!') &&
|
||
|
|
(!IsBOperator(wordBuffer[wbo])) &&
|
||
|
|
(!IsBSeparator(wordBuffer[wbo]))) {
|
||
|
|
wbo++;
|
||
|
|
}
|
||
|
|
// Colorize Default Text
|
||
|
|
styler.ColourTo(startLine + offset - 1 - (wbl - wbo), SCE_BAT_DEFAULT);
|
||
|
|
// Reset Offset to re-process remainder of word
|
||
|
|
offset -= (wbl - wbo);
|
||
|
|
}
|
||
|
|
// Skip next spaces - nothing happens if Offset was Reset
|
||
|
|
while ((offset < lengthLine) && (isspacechar(lineBuffer[offset]))) {
|
||
|
|
offset++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// Colorize Default Text for remainder of line - currently not lexed
|
||
|
|
styler.ColourTo(endPos, SCE_BAT_DEFAULT);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void ColouriseBatchDoc(
|
||
|
|
Sci_PositionU startPos,
|
||
|
|
Sci_Position length,
|
||
|
|
int /*initStyle*/,
|
||
|
|
WordList *keywordlists[],
|
||
|
|
Accessor &styler) {
|
||
|
|
|
||
|
|
char lineBuffer[1024];
|
||
|
|
|
||
|
|
styler.StartAt(startPos);
|
||
|
|
styler.StartSegment(startPos);
|
||
|
|
Sci_PositionU linePos = 0;
|
||
|
|
Sci_PositionU startLine = startPos;
|
||
|
|
for (Sci_PositionU i = startPos; i < startPos + length; i++) {
|
||
|
|
lineBuffer[linePos++] = styler[i];
|
||
|
|
if (AtEOL(styler, i) || (linePos >= sizeof(lineBuffer) - 1)) {
|
||
|
|
// End of line (or of line buffer) met, colourise it
|
||
|
|
lineBuffer[linePos] = '\0';
|
||
|
|
ColouriseBatchLine(lineBuffer, linePos, startLine, i, keywordlists, styler);
|
||
|
|
linePos = 0;
|
||
|
|
startLine = i + 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (linePos > 0) { // Last line does not have ending characters
|
||
|
|
lineBuffer[linePos] = '\0';
|
||
|
|
ColouriseBatchLine(lineBuffer, linePos, startLine, startPos + length - 1,
|
||
|
|
keywordlists, styler);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static const char *const batchWordListDesc[] = {
|
||
|
|
"Internal Commands",
|
||
|
|
"External Commands",
|
||
|
|
0
|
||
|
|
};
|
||
|
|
|
||
|
|
LexerModule lmBatch(SCLEX_BATCH, ColouriseBatchDoc, "batch", 0, batchWordListDesc);
|