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-rw-r--r--lexers/LexBatch.cxx576
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-// Scintilla source code edit control
-/** @file LexBatch.cxx
- ** Lexer for batch files.
- **/
-// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
-// 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"
-
-using namespace Scintilla;
-
-static bool Is0To9(char ch) {
- return (ch >= '0') && (ch <= '9');
-}
-
-static bool IsAlphabetic(int ch) {
- return IsASCII(ch) && isalpha(ch);
-}
-
-static inline bool AtEOL(Accessor &styler, Sci_PositionU i) {
- return (styler[i] == '\n') ||
- ((styler[i] == '\r') && (styler.SafeGetCharAt(i + 1) != '\n'));
-}
-
-// Tests for BATCH Operators
-static bool IsBOperator(char ch) {
- return (ch == '=') || (ch == '+') || (ch == '>') || (ch == '<') ||
- (ch == '|') || (ch == '?') || (ch == '*')||
- (ch == '&') || (ch == '(') || (ch == ')');
-}
-
-// Tests for BATCH Separators
-static bool IsBSeparator(char ch) {
- return (ch == '\\') || (ch == '.') || (ch == ';') ||
- (ch == '\"') || (ch == '\'') || (ch == '/');
-}
-
-// Tests for escape character
-static bool IsEscaped(char* wordStr, Sci_PositionU pos) {
- bool isQoted=false;
- while (pos>0){
- pos--;
- if (wordStr[pos]=='^')
- isQoted=!isQoted;
- else
- break;
- }
- return isQoted;
-}
-
-// Tests for quote character
-static bool textQuoted(char *lineBuffer, Sci_PositionU endPos) {
- char strBuffer[1024];
- strncpy(strBuffer, lineBuffer, endPos);
- strBuffer[endPos] = '\0';
- char *pQuote;
- pQuote = strchr(strBuffer, '"');
- bool CurrentStatus = false;
- while (pQuote != NULL)
- {
- if (!IsEscaped(strBuffer, pQuote - strBuffer)) {
- CurrentStatus = !CurrentStatus;
- }
- pQuote = strchr(pQuote + 1, '"');
- }
- return CurrentStatus;
-}
-
-static void ColouriseBatchDoc(
- Sci_PositionU startPos,
- Sci_Position length,
- int /*initStyle*/,
- WordList *keywordlists[],
- Accessor &styler) {
- // Always backtracks to the start of a line that is not a continuation
- // of the previous line
- if (startPos > 0) {
- Sci_Position ln = styler.GetLine(startPos); // Current line number
- while (startPos > 0) {
- ln--;
- if ((styler.SafeGetCharAt(startPos-3) == '^' && styler.SafeGetCharAt(startPos-2) == '\r' && styler.SafeGetCharAt(startPos-1) == '\n')
- || styler.SafeGetCharAt(startPos-2) == '^') { // handle '^' line continuation
- // When the line continuation is found,
- // set the Start Position to the Start of the previous line
- length+=startPos-styler.LineStart(ln);
- startPos=styler.LineStart(ln);
- }
- else
- break;
- }
- }
-
- char lineBuffer[1024];
-
- styler.StartAt(startPos);
- styler.StartSegment(startPos);
- Sci_PositionU linePos = 0;
- Sci_PositionU startLine = startPos;
- bool continueProcessing = true; // Used to toggle Regular Keyword Checking
- bool isNotAssigned=false; // Used to flag Assignment in Set operation
-
- for (Sci_PositionU i = startPos; i < startPos + length; i++) {
- lineBuffer[linePos++] = styler[i];
- if (AtEOL(styler, i) || (linePos >= sizeof(lineBuffer) - 1) || (i==startPos + length-1)) {
- // End of line (or of line buffer) (or End of Last Line) met, colourise it
- lineBuffer[linePos] = '\0';
- Sci_PositionU lengthLine=linePos;
- Sci_PositionU endPos=i;
- Sci_PositionU offset = 0; // Line Buffer Offset
- Sci_PositionU cmdLoc; // External Command / Program Location
- char wordBuffer[81]; // Word Buffer - large to catch long paths
- Sci_PositionU wbl; // Word Buffer Length
- Sci_PositionU wbo; // Word Buffer Offset - also Special Keyword Buffer Length
- WordList &keywords = *keywordlists[0]; // Internal Commands
- WordList &keywords2 = *keywordlists[1]; // External Commands (optional)
-
- // CHOICE, ECHO, GOTO, PROMPT and SET have Default Text that may contain Regular Keywords
- // Toggling Regular Keyword Checking off improves readability
- // Other Regular Keywords and External Commands / Programs might also benefit from toggling
- // Need a more robust algorithm to properly toggle Regular Keyword Checking
- bool stopLineProcessing=false; // Used to stop line processing if Comment or Drive Change found
- // Special Keywords are those that allow certain characters without whitespace after the command
- // Examples are: cd. cd\ md. rd. dir| dir> echo: echo. path=
- // Special Keyword Buffer used to determine if the first n characters is a Keyword
- char sKeywordBuffer[10]; // Special Keyword Buffer
- bool sKeywordFound; // Exit Special Keyword for-loop if found
-
- // Skip initial spaces
- while ((offset < lengthLine) && (isspacechar(lineBuffer[offset]))) {
- offset++;
- }
- // Colorize Default Text
- styler.ColourTo(startLine + offset - 1, SCE_BAT_DEFAULT);
- // Set External Command / Program Location
- cmdLoc = offset;
-
- // Check for Fake Label (Comment) or Real Label - return if found
- if (lineBuffer[offset] == ':') {
- if (lineBuffer[offset + 1] == ':') {
- // Colorize Fake Label (Comment) - :: is similar to REM, see http://content.techweb.com/winmag/columns/explorer/2000/21.htm
- styler.ColourTo(endPos, SCE_BAT_COMMENT);
- } else {
- // Colorize Real Label
- styler.ColourTo(endPos, SCE_BAT_LABEL);
- }
- stopLineProcessing=true;
- // Check for Drive Change (Drive Change is internal command) - return if found
- } else if ((IsAlphabetic(lineBuffer[offset])) &&
- (lineBuffer[offset + 1] == ':') &&
- ((isspacechar(lineBuffer[offset + 2])) ||
- (((lineBuffer[offset + 2] == '\\')) &&
- (isspacechar(lineBuffer[offset + 3]))))) {
- // Colorize Regular Keyword
- styler.ColourTo(endPos, SCE_BAT_WORD);
- stopLineProcessing=true;
- }
-
- // Check for Hide Command (@ECHO OFF/ON)
- if (lineBuffer[offset] == '@') {
- styler.ColourTo(startLine + offset, SCE_BAT_HIDE);
- offset++;
- }
- // Skip next spaces
- while ((offset < lengthLine) && (isspacechar(lineBuffer[offset]))) {
- offset++;
- }
-
- // Read remainder of line word-at-a-time or remainder-of-word-at-a-time
- while (offset < lengthLine && !stopLineProcessing) {
- if (offset > startLine) {
- // Colorize Default Text
- styler.ColourTo(startLine + offset - 1, SCE_BAT_DEFAULT);
- }
- // Copy word from Line Buffer into Word Buffer
- wbl = 0;
- for (; offset < lengthLine && wbl < 80 &&
- !isspacechar(lineBuffer[offset]); wbl++, offset++) {
- wordBuffer[wbl] = static_cast<char>(tolower(lineBuffer[offset]));
- }
- wordBuffer[wbl] = '\0';
- wbo = 0;
-
- // Check for Comment - return if found
- if ((CompareCaseInsensitive(wordBuffer, "rem") == 0) && continueProcessing) {
- styler.ColourTo(endPos, SCE_BAT_COMMENT);
- break;
- }
- // Check for Separator
- if (IsBSeparator(wordBuffer[0])) {
- // Check for External Command / Program
- if ((cmdLoc == offset - wbl) &&
- ((wordBuffer[0] == ':') ||
- (wordBuffer[0] == '\\') ||
- (wordBuffer[0] == '.'))) {
- // Reset Offset to re-process remainder of word
- offset -= (wbl - 1);
- // Colorize External Command / Program
- if (!keywords2) {
- styler.ColourTo(startLine + offset - 1, SCE_BAT_COMMAND);
- } else if (keywords2.InList(wordBuffer)) {
- styler.ColourTo(startLine + offset - 1, SCE_BAT_COMMAND);
- } else {
- styler.ColourTo(startLine + offset - 1, SCE_BAT_DEFAULT);
- }
- // Reset External Command / Program Location
- cmdLoc = offset;
- } else {
- // Reset Offset to re-process remainder of word
- offset -= (wbl - 1);
- // Colorize Default Text
- styler.ColourTo(startLine + offset - 1, SCE_BAT_DEFAULT);
- }
- // Check for Regular Keyword in list
- } else if ((keywords.InList(wordBuffer)) &&
- (continueProcessing)) {
- // ECHO, GOTO, PROMPT and SET require no further Regular Keyword Checking
- if ((CompareCaseInsensitive(wordBuffer, "echo") == 0) ||
- (CompareCaseInsensitive(wordBuffer, "goto") == 0) ||
- (CompareCaseInsensitive(wordBuffer, "prompt") == 0)) {
- continueProcessing = false;
- }
- // SET requires additional processing for the assignment operator
- if (CompareCaseInsensitive(wordBuffer, "set") == 0) {
- continueProcessing = false;
- isNotAssigned=true;
- }
- // Identify External Command / Program Location for ERRORLEVEL, and EXIST
- if ((CompareCaseInsensitive(wordBuffer, "errorlevel") == 0) ||
- (CompareCaseInsensitive(wordBuffer, "exist") == 0)) {
- // Reset External Command / Program Location
- cmdLoc = offset;
- // Skip next spaces
- while ((cmdLoc < lengthLine) &&
- (isspacechar(lineBuffer[cmdLoc]))) {
- cmdLoc++;
- }
- // Skip comparison
- while ((cmdLoc < lengthLine) &&
- (!isspacechar(lineBuffer[cmdLoc]))) {
- cmdLoc++;
- }
- // Skip next spaces
- while ((cmdLoc < lengthLine) &&
- (isspacechar(lineBuffer[cmdLoc]))) {
- cmdLoc++;
- }
- // Identify External Command / Program Location for CALL, DO, LOADHIGH and LH
- } else if ((CompareCaseInsensitive(wordBuffer, "call") == 0) ||
- (CompareCaseInsensitive(wordBuffer, "do") == 0) ||
- (CompareCaseInsensitive(wordBuffer, "loadhigh") == 0) ||
- (CompareCaseInsensitive(wordBuffer, "lh") == 0)) {
- // Reset External Command / Program Location
- cmdLoc = offset;
- // Skip next spaces
- while ((cmdLoc < lengthLine) &&
- (isspacechar(lineBuffer[cmdLoc]))) {
- cmdLoc++;
- }
- }
- // Colorize Regular keyword
- styler.ColourTo(startLine + offset - 1, SCE_BAT_WORD);
- // No need to Reset Offset
- // Check for Special Keyword in list, External Command / Program, or Default Text
- } else if ((wordBuffer[0] != '%') &&
- (wordBuffer[0] != '!') &&
- (!IsBOperator(wordBuffer[0])) &&
- (continueProcessing)) {
- // Check for Special Keyword
- // Affected Commands are in Length range 2-6
- // Good that ERRORLEVEL, EXIST, CALL, DO, LOADHIGH, and LH are unaffected
- sKeywordFound = false;
- for (Sci_PositionU keywordLength = 2; keywordLength < wbl && keywordLength < 7 && !sKeywordFound; keywordLength++) {
- wbo = 0;
- // Copy Keyword Length from Word Buffer into Special Keyword Buffer
- for (; wbo < keywordLength; wbo++) {
- sKeywordBuffer[wbo] = static_cast<char>(wordBuffer[wbo]);
- }
- sKeywordBuffer[wbo] = '\0';
- // Check for Special Keyword in list
- if ((keywords.InList(sKeywordBuffer)) &&
- ((IsBOperator(wordBuffer[wbo])) ||
- (IsBSeparator(wordBuffer[wbo])))) {
- sKeywordFound = true;
- // ECHO requires no further Regular Keyword Checking
- if (CompareCaseInsensitive(sKeywordBuffer, "echo") == 0) {
- continueProcessing = false;
- }
- // Colorize Special Keyword as Regular Keyword
- styler.ColourTo(startLine + offset - 1 - (wbl - wbo), SCE_BAT_WORD);
- // Reset Offset to re-process remainder of word
- offset -= (wbl - wbo);
- }
- }
- // Check for External Command / Program or Default Text
- if (!sKeywordFound) {
- wbo = 0;
- // Check for External Command / Program
- if (cmdLoc == offset - wbl) {
- // Read up to %, Operator or Separator
- while ((wbo < wbl) &&
- (((wordBuffer[wbo] != '%') &&
- (wordBuffer[wbo] != '!') &&
- (!IsBOperator(wordBuffer[wbo])) &&
- (!IsBSeparator(wordBuffer[wbo]))))) {
- wbo++;
- }
- // Reset External Command / Program Location
- cmdLoc = offset - (wbl - wbo);
- // Reset Offset to re-process remainder of word
- offset -= (wbl - wbo);
- // CHOICE requires no further Regular Keyword Checking
- if (CompareCaseInsensitive(wordBuffer, "choice") == 0) {
- continueProcessing = false;
- }
- // Check for START (and its switches) - What follows is External Command \ Program
- if (CompareCaseInsensitive(wordBuffer, "start") == 0) {
- // Reset External Command / Program Location
- cmdLoc = offset;
- // Skip next spaces
- while ((cmdLoc < lengthLine) &&
- (isspacechar(lineBuffer[cmdLoc]))) {
- cmdLoc++;
- }
- // Reset External Command / Program Location if command switch detected
- if (lineBuffer[cmdLoc] == '/') {
- // Skip command switch
- while ((cmdLoc < lengthLine) &&
- (!isspacechar(lineBuffer[cmdLoc]))) {
- cmdLoc++;
- }
- // Skip next spaces
- while ((cmdLoc < lengthLine) &&
- (isspacechar(lineBuffer[cmdLoc]))) {
- cmdLoc++;
- }
- }
- }
- // Colorize External Command / Program
- if (!keywords2) {
- styler.ColourTo(startLine + offset - 1, SCE_BAT_COMMAND);
- } else if (keywords2.InList(wordBuffer)) {
- styler.ColourTo(startLine + offset - 1, SCE_BAT_COMMAND);
- } else {
- styler.ColourTo(startLine + offset - 1, SCE_BAT_DEFAULT);
- }
- // No need to Reset Offset
- // 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);
- }
- }
- // Check for Argument (%n), Environment Variable (%x...%) or Local Variable (%%a)
- } 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] != '%')) {
- wbo++;
- }
- // Check for Argument (%n) or (%*)
- if (((Is0To9(wordBuffer[1])) || (wordBuffer[1] == '*')) &&
- (wordBuffer[wbo] != '%')) {
- // Check for External Command / Program
- if (cmdLoc == offset - wbl) {
- cmdLoc = offset - (wbl - 2);
- }
- // Colorize Argument
- styler.ColourTo(startLine + offset - 1 - (wbl - 2), SCE_BAT_IDENTIFIER);
- // Reset Offset to re-process remainder of word
- offset -= (wbl - 2);
- // Check for Expanded Argument (%~...) / Variable (%%~...)
- } else if (((wbl > 1) && (wordBuffer[1] == '~')) ||
- ((wbl > 2) && (wordBuffer[1] == '%') && (wordBuffer[2] == '~'))) {
- // Check for External Command / Program
- if (cmdLoc == offset - wbl) {
- cmdLoc = offset - (wbl - wbo);
- }
- // Colorize Expanded Argument / Variable
- styler.ColourTo(startLine + offset - 1 - (wbl - wbo), SCE_BAT_IDENTIFIER);
- // Reset Offset to re-process remainder of word
- offset -= (wbl - wbo);
- // Check for Environment Variable (%x...%)
- } 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] != '!')) {
- 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
- if (continueProcessing)
- styler.ColourTo(startLine + offset - 1 - (wbl - 2), SCE_BAT_OPERATOR);
- else
- styler.ColourTo(startLine + offset - 1 - (wbl - 2), SCE_BAT_DEFAULT);
- // Reset Offset to re-process remainder of word
- offset -= (wbl - 2);
- // Check for Pipe Operator
- } else if ((wordBuffer[0] == '|') &&
- !(IsEscaped(lineBuffer,offset - wbl + wbo) || textQuoted(lineBuffer, offset - wbl) )) {
- // 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);
- continueProcessing = true;
- // Check for Other Operator
- } else {
- // Check for Operators: >, |, &
- if (((wordBuffer[0] == '>')||
- (wordBuffer[0] == ')')||
- (wordBuffer[0] == '(')||
- (wordBuffer[0] == '&' )) &&
- !(!continueProcessing && (IsEscaped(lineBuffer,offset - wbl + wbo)
- || textQuoted(lineBuffer, offset - wbl) ))){
- // Turn Keyword and External Command / Program checking back on
- continueProcessing = true;
- isNotAssigned=false;
- }
- // Colorize Other Operators
- // Do not Colorize Paranthesis, quoted text and escaped operators
- if (((wordBuffer[0] != ')') && (wordBuffer[0] != '(')
- && !textQuoted(lineBuffer, offset - wbl) && !IsEscaped(lineBuffer,offset - wbl + wbo))
- && !((wordBuffer[0] == '=') && !isNotAssigned ))
- styler.ColourTo(startLine + offset - 1 - (wbl - 1), SCE_BAT_OPERATOR);
- else
- styler.ColourTo(startLine + offset - 1 - (wbl - 1), SCE_BAT_DEFAULT);
- // Reset Offset to re-process remainder of word
- offset -= (wbl - 1);
-
- if ((wordBuffer[0] == '=') && isNotAssigned ){
- isNotAssigned=false;
- }
- }
- // 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);
-
- // handle line continuation for SET and ECHO commands except the last line
- if (!continueProcessing && (i<startPos + length-1)) {
- if (linePos==1 || (linePos==2 && lineBuffer[1]=='\r')) // empty line on Unix and Mac or on Windows
- continueProcessing=true;
- else {
- Sci_PositionU lineContinuationPos;
- if ((linePos>2) && lineBuffer[linePos-2]=='\r') // Windows EOL
- lineContinuationPos=linePos-3;
- else
- lineContinuationPos=linePos-2; // Unix or Mac EOL
- // Reset continueProcessing if line continuation was not found
- if ((lineBuffer[lineContinuationPos]!='^')
- || IsEscaped(lineBuffer, lineContinuationPos)
- || textQuoted(lineBuffer, lineContinuationPos))
- continueProcessing=true;
- }
- }
-
- linePos = 0;
- startLine = i + 1;
- }
- }
-}
-
-static const char *const batchWordListDesc[] = {
- "Internal Commands",
- "External Commands",
- 0
-};
-
-LexerModule lmBatch(SCLEX_BATCH, ColouriseBatchDoc, "batch", 0, batchWordListDesc);
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-14 19:27:56 +0000