417 lines
11 KiB
C++
417 lines
11 KiB
C++
// Scintilla source code edit control
|
|
/**
|
|
* @file LexRegistry.cxx
|
|
* @date July 26 2014
|
|
* @brief Lexer for Windows registration files(.reg)
|
|
* @author nkmathew
|
|
*
|
|
* The License.txt file describes the conditions under which this software may be
|
|
* distributed.
|
|
*
|
|
*/
|
|
|
|
#include <cstdlib>
|
|
#include <cassert>
|
|
#include <cctype>
|
|
#include <cstdio>
|
|
#include <string>
|
|
#include <vector>
|
|
#include <map>
|
|
|
|
#include "ILexer.h"
|
|
#include "Scintilla.h"
|
|
#include "SciLexer.h"
|
|
#include "WordList.h"
|
|
#include "LexAccessor.h"
|
|
#include "StyleContext.h"
|
|
#include "CharacterSet.h"
|
|
#include "LexerModule.h"
|
|
#include "OptionSet.h"
|
|
|
|
#ifdef SCI_NAMESPACE
|
|
using namespace Scintilla;
|
|
#endif
|
|
|
|
static const char *const RegistryWordListDesc[] = {
|
|
0
|
|
};
|
|
|
|
struct OptionsRegistry {
|
|
bool foldCompact;
|
|
bool fold;
|
|
OptionsRegistry() {
|
|
foldCompact = false;
|
|
fold = false;
|
|
}
|
|
};
|
|
|
|
struct OptionSetRegistry : public OptionSet<OptionsRegistry> {
|
|
OptionSetRegistry() {
|
|
DefineProperty("fold.compact", &OptionsRegistry::foldCompact);
|
|
DefineProperty("fold", &OptionsRegistry::fold);
|
|
DefineWordListSets(RegistryWordListDesc);
|
|
}
|
|
};
|
|
|
|
class LexerRegistry : public ILexer {
|
|
OptionsRegistry options;
|
|
OptionSetRegistry optSetRegistry;
|
|
|
|
static bool IsStringState(int state) {
|
|
return (state == SCE_REG_VALUENAME || state == SCE_REG_STRING);
|
|
}
|
|
|
|
static bool IsKeyPathState(int state) {
|
|
return (state == SCE_REG_ADDEDKEY || state == SCE_REG_DELETEDKEY);
|
|
}
|
|
|
|
static bool AtValueType(LexAccessor &styler, int start) {
|
|
int i = 0;
|
|
while (i < 10) {
|
|
i++;
|
|
char curr = styler.SafeGetCharAt(start+i, '\0');
|
|
if (curr == ':') {
|
|
return true;
|
|
} else if (!curr) {
|
|
return false;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool IsNextNonWhitespace(LexAccessor &styler, int start, char ch) {
|
|
int i = 0;
|
|
while (i < 100) {
|
|
i++;
|
|
char curr = styler.SafeGetCharAt(start+i, '\0');
|
|
char next = styler.SafeGetCharAt(start+i+1, '\0');
|
|
bool atEOL = (curr == '\r' && next != '\n') || (curr == '\n');
|
|
if (curr == ch) {
|
|
return true;
|
|
} else if (!isspacechar(curr) || atEOL) {
|
|
return false;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Looks for the equal sign at the end of the string
|
|
static bool AtValueName(LexAccessor &styler, int start) {
|
|
bool atEOL = false;
|
|
int i = 0;
|
|
bool escaped = false;
|
|
while (!atEOL) {
|
|
i++;
|
|
char curr = styler.SafeGetCharAt(start+i, '\0');
|
|
char next = styler.SafeGetCharAt(start+i+1, '\0');
|
|
atEOL = (curr == '\r' && next != '\n') || (curr == '\n');
|
|
if (escaped) {
|
|
escaped = false;
|
|
continue;
|
|
}
|
|
escaped = curr == '\\';
|
|
if (curr == '"') {
|
|
return IsNextNonWhitespace(styler, start+i, '=');
|
|
} else if (!curr) {
|
|
return false;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool AtKeyPathEnd(LexAccessor &styler, int start) {
|
|
bool atEOL = false;
|
|
int i = 0;
|
|
while (!atEOL) {
|
|
i++;
|
|
char curr = styler.SafeGetCharAt(start+i, '\0');
|
|
char next = styler.SafeGetCharAt(start+i+1, '\0');
|
|
atEOL = (curr == '\r' && next != '\n') || (curr == '\n');
|
|
if (curr == ']' || !curr) {
|
|
// There's still at least one or more square brackets ahead
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static bool AtGUID(LexAccessor &styler, int start) {
|
|
int count = 8;
|
|
int portion = 0;
|
|
int offset = 1;
|
|
char digit = '\0';
|
|
while (portion < 5) {
|
|
int i = 0;
|
|
while (i < count) {
|
|
digit = styler.SafeGetCharAt(start+offset);
|
|
if (!(isxdigit(digit) || digit == '-')) {
|
|
return false;
|
|
}
|
|
offset++;
|
|
i++;
|
|
}
|
|
portion++;
|
|
count = (portion == 4) ? 13 : 5;
|
|
}
|
|
digit = styler.SafeGetCharAt(start+offset);
|
|
if (digit == '}') {
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
public:
|
|
LexerRegistry() {}
|
|
virtual ~LexerRegistry() {}
|
|
virtual int SCI_METHOD Version() const {
|
|
return lvOriginal;
|
|
}
|
|
virtual void SCI_METHOD Release() {
|
|
delete this;
|
|
}
|
|
virtual const char *SCI_METHOD PropertyNames() {
|
|
return optSetRegistry.PropertyNames();
|
|
}
|
|
virtual int SCI_METHOD PropertyType(const char *name) {
|
|
return optSetRegistry.PropertyType(name);
|
|
}
|
|
virtual const char *SCI_METHOD DescribeProperty(const char *name) {
|
|
return optSetRegistry.DescribeProperty(name);
|
|
}
|
|
virtual int SCI_METHOD PropertySet(const char *key, const char *val) {
|
|
if (optSetRegistry.PropertySet(&options, key, val)) {
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
virtual int SCI_METHOD WordListSet(int, const char *) {
|
|
return -1;
|
|
}
|
|
virtual void *SCI_METHOD PrivateCall(int, void *) {
|
|
return 0;
|
|
}
|
|
static ILexer *LexerFactoryRegistry() {
|
|
return new LexerRegistry;
|
|
}
|
|
virtual const char *SCI_METHOD DescribeWordListSets() {
|
|
return optSetRegistry.DescribeWordListSets();
|
|
}
|
|
virtual void SCI_METHOD Lex(unsigned startPos,
|
|
int length,
|
|
int initStyle,
|
|
IDocument *pAccess);
|
|
virtual void SCI_METHOD Fold(unsigned startPos,
|
|
int length,
|
|
int initStyle,
|
|
IDocument *pAccess);
|
|
};
|
|
|
|
void SCI_METHOD LexerRegistry::Lex(unsigned startPos,
|
|
int length,
|
|
int initStyle,
|
|
IDocument *pAccess) {
|
|
int beforeGUID = SCE_REG_DEFAULT;
|
|
int beforeEscape = SCE_REG_DEFAULT;
|
|
CharacterSet setOperators = CharacterSet(CharacterSet::setNone, "-,.=:\\@()");
|
|
LexAccessor styler(pAccess);
|
|
StyleContext context(startPos, length, initStyle, styler);
|
|
bool highlight = true;
|
|
bool afterEqualSign = false;
|
|
while (context.More()) {
|
|
if (context.atLineStart) {
|
|
int currPos = static_cast<int>(context.currentPos);
|
|
bool continued = styler[currPos-3] == '\\';
|
|
highlight = continued ? true : false;
|
|
}
|
|
switch (context.state) {
|
|
case SCE_REG_COMMENT:
|
|
if (context.atLineEnd) {
|
|
context.SetState(SCE_REG_DEFAULT);
|
|
}
|
|
break;
|
|
case SCE_REG_VALUENAME:
|
|
case SCE_REG_STRING: {
|
|
int currPos = static_cast<int>(context.currentPos);
|
|
if (context.ch == '"') {
|
|
context.ForwardSetState(SCE_REG_DEFAULT);
|
|
} else if (context.ch == '\\') {
|
|
beforeEscape = context.state;
|
|
context.SetState(SCE_REG_ESCAPED);
|
|
context.Forward();
|
|
} else if (context.ch == '{') {
|
|
if (AtGUID(styler, currPos)) {
|
|
beforeGUID = context.state;
|
|
context.SetState(SCE_REG_STRING_GUID);
|
|
}
|
|
}
|
|
if (context.state == SCE_REG_STRING &&
|
|
context.ch == '%' &&
|
|
(isdigit(context.chNext) || context.chNext == '*')) {
|
|
context.SetState(SCE_REG_PARAMETER);
|
|
}
|
|
}
|
|
break;
|
|
case SCE_REG_PARAMETER:
|
|
context.ForwardSetState(SCE_REG_STRING);
|
|
if (context.ch == '"') {
|
|
context.ForwardSetState(SCE_REG_DEFAULT);
|
|
}
|
|
break;
|
|
case SCE_REG_VALUETYPE:
|
|
if (context.ch == ':') {
|
|
context.SetState(SCE_REG_DEFAULT);
|
|
afterEqualSign = false;
|
|
}
|
|
break;
|
|
case SCE_REG_HEXDIGIT:
|
|
case SCE_REG_OPERATOR:
|
|
context.SetState(SCE_REG_DEFAULT);
|
|
break;
|
|
case SCE_REG_DELETEDKEY:
|
|
case SCE_REG_ADDEDKEY: {
|
|
int currPos = static_cast<int>(context.currentPos);
|
|
if (context.ch == ']' && AtKeyPathEnd(styler, currPos)) {
|
|
context.ForwardSetState(SCE_REG_DEFAULT);
|
|
} else if (context.ch == '{') {
|
|
if (AtGUID(styler, currPos)) {
|
|
beforeGUID = context.state;
|
|
context.SetState(SCE_REG_KEYPATH_GUID);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case SCE_REG_ESCAPED:
|
|
if (context.ch == '"') {
|
|
context.SetState(beforeEscape);
|
|
context.ForwardSetState(SCE_REG_DEFAULT);
|
|
} else if (context.ch == '\\') {
|
|
context.Forward();
|
|
} else {
|
|
context.SetState(beforeEscape);
|
|
beforeEscape = SCE_REG_DEFAULT;
|
|
}
|
|
break;
|
|
case SCE_REG_STRING_GUID:
|
|
case SCE_REG_KEYPATH_GUID: {
|
|
if (context.ch == '}') {
|
|
context.ForwardSetState(beforeGUID);
|
|
beforeGUID = SCE_REG_DEFAULT;
|
|
}
|
|
int currPos = static_cast<int>(context.currentPos);
|
|
if (context.ch == '"' && IsStringState(context.state)) {
|
|
context.ForwardSetState(SCE_REG_DEFAULT);
|
|
} else if (context.ch == ']' &&
|
|
AtKeyPathEnd(styler, currPos) &&
|
|
IsKeyPathState(context.state)) {
|
|
context.ForwardSetState(SCE_REG_DEFAULT);
|
|
} else if (context.ch == '\\' && IsStringState(context.state)) {
|
|
beforeEscape = context.state;
|
|
context.SetState(SCE_REG_ESCAPED);
|
|
context.Forward();
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
// Determine if a new state should be entered.
|
|
if (context.state == SCE_REG_DEFAULT) {
|
|
int currPos = static_cast<int>(context.currentPos);
|
|
if (context.ch == ';') {
|
|
context.SetState(SCE_REG_COMMENT);
|
|
} else if (context.ch == '"') {
|
|
if (AtValueName(styler, currPos)) {
|
|
context.SetState(SCE_REG_VALUENAME);
|
|
} else {
|
|
context.SetState(SCE_REG_STRING);
|
|
}
|
|
} else if (context.ch == '[') {
|
|
if (IsNextNonWhitespace(styler, currPos, '-')) {
|
|
context.SetState(SCE_REG_DELETEDKEY);
|
|
} else {
|
|
context.SetState(SCE_REG_ADDEDKEY);
|
|
}
|
|
} else if (context.ch == '=') {
|
|
afterEqualSign = true;
|
|
highlight = true;
|
|
} else if (afterEqualSign) {
|
|
bool wordStart = isalpha(context.ch) && !isalpha(context.chPrev);
|
|
if (wordStart && AtValueType(styler, currPos)) {
|
|
context.SetState(SCE_REG_VALUETYPE);
|
|
}
|
|
} else if (isxdigit(context.ch) && highlight) {
|
|
context.SetState(SCE_REG_HEXDIGIT);
|
|
}
|
|
highlight = (context.ch == '@') ? true : highlight;
|
|
if (setOperators.Contains(context.ch) && highlight) {
|
|
context.SetState(SCE_REG_OPERATOR);
|
|
}
|
|
}
|
|
context.Forward();
|
|
}
|
|
context.Complete();
|
|
}
|
|
|
|
// Folding similar to that of FoldPropsDoc in LexOthers
|
|
void SCI_METHOD LexerRegistry::Fold(unsigned startPos,
|
|
int length,
|
|
int,
|
|
IDocument *pAccess) {
|
|
if (!options.fold) {
|
|
return;
|
|
}
|
|
LexAccessor styler(pAccess);
|
|
int currLine = styler.GetLine(startPos);
|
|
int visibleChars = 0;
|
|
unsigned endPos = startPos + length;
|
|
bool atKeyPath = false;
|
|
for (unsigned i = startPos; i < endPos; i++) {
|
|
atKeyPath = IsKeyPathState(styler.StyleAt(i)) ? true : atKeyPath;
|
|
char curr = styler.SafeGetCharAt(i);
|
|
char next = styler.SafeGetCharAt(i+1);
|
|
bool atEOL = (curr == '\r' && next != '\n') || (curr == '\n');
|
|
if (atEOL || i == (endPos-1)) {
|
|
int level = SC_FOLDLEVELBASE;
|
|
if (currLine > 0) {
|
|
int prevLevel = styler.LevelAt(currLine-1);
|
|
if (prevLevel & SC_FOLDLEVELHEADERFLAG) {
|
|
level += 1;
|
|
} else {
|
|
level = prevLevel;
|
|
}
|
|
}
|
|
if (!visibleChars && options.foldCompact) {
|
|
level |= SC_FOLDLEVELWHITEFLAG;
|
|
} else if (atKeyPath) {
|
|
level = SC_FOLDLEVELBASE | SC_FOLDLEVELHEADERFLAG;
|
|
}
|
|
if (level != styler.LevelAt(currLine)) {
|
|
styler.SetLevel(currLine, level);
|
|
}
|
|
currLine++;
|
|
visibleChars = 0;
|
|
atKeyPath = false;
|
|
}
|
|
if (!isspacechar(curr)) {
|
|
visibleChars++;
|
|
}
|
|
}
|
|
|
|
// Make the folding reach the last line in the file
|
|
int level = SC_FOLDLEVELBASE;
|
|
if (currLine > 0) {
|
|
int prevLevel = styler.LevelAt(currLine-1);
|
|
if (prevLevel & SC_FOLDLEVELHEADERFLAG) {
|
|
level += 1;
|
|
} else {
|
|
level = prevLevel;
|
|
}
|
|
}
|
|
styler.SetLevel(currLine, level);
|
|
}
|
|
|
|
LexerModule lmRegistry(SCLEX_REGISTRY,
|
|
LexerRegistry::LexerFactoryRegistry,
|
|
"registry",
|
|
RegistryWordListDesc);
|
|
|