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Diffstat (limited to 'lexers/LexDiff.cxx')
| -rw-r--r-- | lexers/LexDiff.cxx | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/lexers/LexDiff.cxx b/lexers/LexDiff.cxx deleted file mode 100644 index dd008c5cb..000000000 --- a/lexers/LexDiff.cxx +++ /dev/null @@ -1,161 +0,0 @@ -// Scintilla source code edit control -/** @file LexDiff.cxx - ** Lexer for diff results. - **/ -// 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 inline bool AtEOL(Accessor &styler, Sci_PositionU i) { - return (styler[i] == '\n') || - ((styler[i] == '\r') && (styler.SafeGetCharAt(i + 1) != '\n')); -} - -#define DIFF_BUFFER_START_SIZE 16 -// Note that ColouriseDiffLine analyzes only the first DIFF_BUFFER_START_SIZE -// characters of each line to classify the line. - -static void ColouriseDiffLine(char *lineBuffer, Sci_Position endLine, Accessor &styler) { - // It is needed to remember the current state to recognize starting - // comment lines before the first "diff " or "--- ". If a real - // difference starts then each line starting with ' ' is a whitespace - // otherwise it is considered a comment (Only in..., Binary file...) - if (0 == strncmp(lineBuffer, "diff ", 5)) { - styler.ColourTo(endLine, SCE_DIFF_COMMAND); - } else if (0 == strncmp(lineBuffer, "Index: ", 7)) { // For subversion's diff - styler.ColourTo(endLine, SCE_DIFF_COMMAND); - } else if (0 == strncmp(lineBuffer, "---", 3) && lineBuffer[3] != '-') { - // In a context diff, --- appears in both the header and the position markers - if (lineBuffer[3] == ' ' && atoi(lineBuffer + 4) && !strchr(lineBuffer, '/')) - styler.ColourTo(endLine, SCE_DIFF_POSITION); - else if (lineBuffer[3] == '\r' || lineBuffer[3] == '\n') - styler.ColourTo(endLine, SCE_DIFF_POSITION); - else if (lineBuffer[3] == ' ') - styler.ColourTo(endLine, SCE_DIFF_HEADER); - else - styler.ColourTo(endLine, SCE_DIFF_DELETED); - } else if (0 == strncmp(lineBuffer, "+++ ", 4)) { - // I don't know of any diff where "+++ " is a position marker, but for - // consistency, do the same as with "--- " and "*** ". - if (atoi(lineBuffer+4) && !strchr(lineBuffer, '/')) - styler.ColourTo(endLine, SCE_DIFF_POSITION); - else - styler.ColourTo(endLine, SCE_DIFF_HEADER); - } else if (0 == strncmp(lineBuffer, "====", 4)) { // For p4's diff - styler.ColourTo(endLine, SCE_DIFF_HEADER); - } else if (0 == strncmp(lineBuffer, "***", 3)) { - // In a context diff, *** appears in both the header and the position markers. - // Also ******** is a chunk header, but here it's treated as part of the - // position marker since there is no separate style for a chunk header. - if (lineBuffer[3] == ' ' && atoi(lineBuffer+4) && !strchr(lineBuffer, '/')) - styler.ColourTo(endLine, SCE_DIFF_POSITION); - else if (lineBuffer[3] == '*') - styler.ColourTo(endLine, SCE_DIFF_POSITION); - else - styler.ColourTo(endLine, SCE_DIFF_HEADER); - } else if (0 == strncmp(lineBuffer, "? ", 2)) { // For difflib - styler.ColourTo(endLine, SCE_DIFF_HEADER); - } else if (lineBuffer[0] == '@') { - styler.ColourTo(endLine, SCE_DIFF_POSITION); - } else if (lineBuffer[0] >= '0' && lineBuffer[0] <= '9') { - styler.ColourTo(endLine, SCE_DIFF_POSITION); - } else if (0 == strncmp(lineBuffer, "++", 2)) { - styler.ColourTo(endLine, SCE_DIFF_PATCH_ADD); - } else if (0 == strncmp(lineBuffer, "+-", 2)) { - styler.ColourTo(endLine, SCE_DIFF_PATCH_DELETE); - } else if (0 == strncmp(lineBuffer, "-+", 2)) { - styler.ColourTo(endLine, SCE_DIFF_REMOVED_PATCH_ADD); - } else if (0 == strncmp(lineBuffer, "--", 2)) { - styler.ColourTo(endLine, SCE_DIFF_REMOVED_PATCH_DELETE); - } else if (lineBuffer[0] == '-' || lineBuffer[0] == '<') { - styler.ColourTo(endLine, SCE_DIFF_DELETED); - } else if (lineBuffer[0] == '+' || lineBuffer[0] == '>') { - styler.ColourTo(endLine, SCE_DIFF_ADDED); - } else if (lineBuffer[0] == '!') { - styler.ColourTo(endLine, SCE_DIFF_CHANGED); - } else if (lineBuffer[0] != ' ') { - styler.ColourTo(endLine, SCE_DIFF_COMMENT); - } else { - styler.ColourTo(endLine, SCE_DIFF_DEFAULT); - } -} - -static void ColouriseDiffDoc(Sci_PositionU startPos, Sci_Position length, int, WordList *[], Accessor &styler) { - char lineBuffer[DIFF_BUFFER_START_SIZE] = ""; - styler.StartAt(startPos); - styler.StartSegment(startPos); - Sci_PositionU linePos = 0; - for (Sci_PositionU i = startPos; i < startPos + length; i++) { - if (AtEOL(styler, i)) { - if (linePos < DIFF_BUFFER_START_SIZE) { - lineBuffer[linePos] = 0; - } - ColouriseDiffLine(lineBuffer, i, styler); - linePos = 0; - } else if (linePos < DIFF_BUFFER_START_SIZE - 1) { - lineBuffer[linePos++] = styler[i]; - } else if (linePos == DIFF_BUFFER_START_SIZE - 1) { - lineBuffer[linePos++] = 0; - } - } - if (linePos > 0) { // Last line does not have ending characters - if (linePos < DIFF_BUFFER_START_SIZE) { - lineBuffer[linePos] = 0; - } - ColouriseDiffLine(lineBuffer, startPos + length - 1, styler); - } -} - -static void FoldDiffDoc(Sci_PositionU startPos, Sci_Position length, int, WordList *[], Accessor &styler) { - Sci_Position curLine = styler.GetLine(startPos); - Sci_Position curLineStart = styler.LineStart(curLine); - int prevLevel = curLine > 0 ? styler.LevelAt(curLine - 1) : SC_FOLDLEVELBASE; - int nextLevel; - - do { - const int lineType = styler.StyleAt(curLineStart); - if (lineType == SCE_DIFF_COMMAND) - nextLevel = SC_FOLDLEVELBASE | SC_FOLDLEVELHEADERFLAG; - else if (lineType == SCE_DIFF_HEADER) - nextLevel = (SC_FOLDLEVELBASE + 1) | SC_FOLDLEVELHEADERFLAG; - else if (lineType == SCE_DIFF_POSITION && styler[curLineStart] != '-') - nextLevel = (SC_FOLDLEVELBASE + 2) | SC_FOLDLEVELHEADERFLAG; - else if (prevLevel & SC_FOLDLEVELHEADERFLAG) - nextLevel = (prevLevel & SC_FOLDLEVELNUMBERMASK) + 1; - else - nextLevel = prevLevel; - - if ((nextLevel & SC_FOLDLEVELHEADERFLAG) && (nextLevel == prevLevel)) - styler.SetLevel(curLine-1, prevLevel & ~SC_FOLDLEVELHEADERFLAG); - - styler.SetLevel(curLine, nextLevel); - prevLevel = nextLevel; - - curLineStart = styler.LineStart(++curLine); - } while (static_cast<Sci_Position>(startPos)+length > curLineStart); -} - -static const char *const emptyWordListDesc[] = { - 0 -}; - -LexerModule lmDiff(SCLEX_DIFF, ColouriseDiffDoc, "diff", FoldDiffDoc, emptyWordListDesc); |