ext/scintilla/lexlib/StyleContext.cxx

   1 // Scintilla source code edit control
   2 /** @file StyleContext.cxx
   3  ** Lexer infrastructure.
   4  **/
   5 // Copyright 1998-2004 by Neil Hodgson <neilh@scintilla.org>
   6 // This file is in the public domain.
   7
   8 #include <cstdlib>
   9 #include <cassert>
  10 #include <cctype>
  11
  12 #include "ILexer.h"
  13
  14 #include "LexAccessor.h"
  15 #include "Accessor.h"
  16 #include "StyleContext.h"
  17 #include "CharacterSet.h"
  18
  19 using namespace Scintilla;
  20
  21 bool StyleContext::MatchIgnoreCase(const char *s) {
  22         if (MakeLowerCase(ch) != static_cast<unsigned char>(*s))
  23                 return false;
  24         s++;
  25         if (MakeLowerCase(chNext) != static_cast<unsigned char>(*s))
  26                 return false;
  27         s++;
  28         for (int n = 2; *s; n++) {
  29                 if (static_cast<unsigned char>(*s) !=
  30                         MakeLowerCase(static_cast<unsigned char>(styler.SafeGetCharAt(currentPos + n, 0))))
  31                         return false;
  32                 s++;
  33         }
  34         return true;
  35 }
  36
  37 static void getRange(Sci_PositionU start,
  38                 Sci_PositionU end,
  39                 LexAccessor &styler,
  40                 char *s,
  41                 Sci_PositionU len) {
  42         Sci_PositionU i = 0;
  43         while ((i < end - start + 1) && (i < len-1)) {
  44                 s[i] = styler[start + i];
  45                 i++;
  46         }
  47         s[i] = '\0';
  48 }
  49
  50 void StyleContext::GetCurrent(char *s, Sci_PositionU len) {
  51         getRange(styler.GetStartSegment(), currentPos - 1, styler, s, len);
  52 }
  53
  54 static void getRangeLowered(Sci_PositionU start,
  55                 Sci_PositionU end,
  56                 LexAccessor &styler,
  57                 char *s,
  58                 Sci_PositionU len) {
  59         Sci_PositionU i = 0;
  60         while ((i < end - start + 1) && (i < len-1)) {
  61                 s[i] = static_cast<char>(tolower(styler[start + i]));
  62                 i++;
  63         }
  64         s[i] = '\0';
  65 }
  66
  67 void StyleContext::GetCurrentLowered(char *s, Sci_PositionU len) {
  68         getRangeLowered(styler.GetStartSegment(), currentPos - 1, styler, s, len);
  69 }