1 files changed, 144 insertions, 0 deletions
diff --git a/lexers/LexMake.cxx b/lexers/LexMake.cxx
new file mode 100644
index 000000000..3ab172682
--- /dev/null
+++ b/lexers/LexMake.cxx
@@ -0,0 +1,144 @@
+// Scintilla source code edit control
+/** @file LexMake.cxx
+ ** Lexer for make 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"
+
+#ifdef SCI_NAMESPACE
+using namespace Scintilla;
+#endif
+
+static inline bool AtEOL(Accessor &styler, unsigned int i) {
+	return (styler[i] == '\n') ||
+	       ((styler[i] == '\r') && (styler.SafeGetCharAt(i + 1) != '\n'));
+}
+
+static void ColouriseMakeLine(
+    char *lineBuffer,
+    unsigned int lengthLine,
+    unsigned int startLine,
+    unsigned int endPos,
+    Accessor &styler) {
+
+	unsigned int i = 0;
+	int lastNonSpace = -1;
+	unsigned int state = SCE_MAKE_DEFAULT;
+	bool bSpecial = false;
+
+	// check for a tab character in column 0 indicating a command
+	bool bCommand = false;
+	if ((lengthLine > 0) && (lineBuffer[0] == '\t'))
+		bCommand = true;
+
+	// Skip initial spaces
+	while ((i < lengthLine) && isspacechar(lineBuffer[i])) {
+		i++;
+	}
+	if (i < lengthLine) {
+		if (lineBuffer[i] == '#') {	// Comment
+			styler.ColourTo(endPos, SCE_MAKE_COMMENT);
+			return;
+		}
+		if (lineBuffer[i] == '!') {	// Special directive
+			styler.ColourTo(endPos, SCE_MAKE_PREPROCESSOR);
+			return;
+		}
+	}
+	int varCount = 0;
+	while (i < lengthLine) {
+		if (((i + 1) < lengthLine) && (lineBuffer[i] == '$' && lineBuffer[i + 1] == '(')) {
+			styler.ColourTo(startLine + i - 1, state);
+			state = SCE_MAKE_IDENTIFIER;
+			varCount++;
+		} else if (state == SCE_MAKE_IDENTIFIER && lineBuffer[i] == ')') {
+			if (--varCount == 0) {
+				styler.ColourTo(startLine + i, state);
+				state = SCE_MAKE_DEFAULT;
+			}
+		}
+
+		// skip identifier and target styling if this is a command line
+		if (!bSpecial && !bCommand) {
+			if (lineBuffer[i] == ':') {
+				if (((i + 1) < lengthLine) && (lineBuffer[i + 1] == '=')) {
+					// it's a ':=', so style as an identifier
+					if (lastNonSpace >= 0)
+						styler.ColourTo(startLine + lastNonSpace, SCE_MAKE_IDENTIFIER);
+					styler.ColourTo(startLine + i - 1, SCE_MAKE_DEFAULT);
+					styler.ColourTo(startLine + i + 1, SCE_MAKE_OPERATOR);
+				} else {
+					// We should check that no colouring was made since the beginning of the line,
+					// to avoid colouring stuff like /OUT:file
+					if (lastNonSpace >= 0)
+						styler.ColourTo(startLine + lastNonSpace, SCE_MAKE_TARGET);
+					styler.ColourTo(startLine + i - 1, SCE_MAKE_DEFAULT);
+					styler.ColourTo(startLine + i, SCE_MAKE_OPERATOR);
+				}
+				bSpecial = true;	// Only react to the first ':' of the line
+				state = SCE_MAKE_DEFAULT;
+			} else if (lineBuffer[i] == '=') {
+				if (lastNonSpace >= 0)
+					styler.ColourTo(startLine + lastNonSpace, SCE_MAKE_IDENTIFIER);
+				styler.ColourTo(startLine + i - 1, SCE_MAKE_DEFAULT);
+				styler.ColourTo(startLine + i, SCE_MAKE_OPERATOR);
+				bSpecial = true;	// Only react to the first '=' of the line
+				state = SCE_MAKE_DEFAULT;
+			}
+		}
+		if (!isspacechar(lineBuffer[i])) {
+			lastNonSpace = i;
+		}
+		i++;
+	}
+	if (state == SCE_MAKE_IDENTIFIER) {
+		styler.ColourTo(endPos, SCE_MAKE_IDEOL);	// Error, variable reference not ended
+	} else {
+		styler.ColourTo(endPos, SCE_MAKE_DEFAULT);
+	}
+}
+
+static void ColouriseMakeDoc(unsigned int startPos, int length, int, WordList *[], Accessor &styler) {
+	char lineBuffer[1024];
+	styler.StartAt(startPos);
+	styler.StartSegment(startPos);
+	unsigned int linePos = 0;
+	unsigned int startLine = startPos;
+	for (unsigned int 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';
+			ColouriseMakeLine(lineBuffer, linePos, startLine, i, styler);
+			linePos = 0;
+			startLine = i + 1;
+		}
+	}
+	if (linePos > 0) {	// Last line does not have ending characters
+		ColouriseMakeLine(lineBuffer, linePos, startLine, startPos + length - 1, styler);
+	}
+}
+
+static const char *const emptyWordListDesc[] = {
+	0
+};
+
+LexerModule lmMake(SCLEX_MAKEFILE, ColouriseMakeDoc, "makefile", 0, emptyWordListDesc);