You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
309 lines
8.5 KiB
309 lines
8.5 KiB
// Copyright 2008-2010 Sergiu Dotenco. The License.txt file describes the
|
|
// conditions under which this software may be distributed.
|
|
|
|
/**
|
|
* @file LexBibTeX.cxx
|
|
* @brief General BibTeX coloring scheme.
|
|
* @author Sergiu Dotenco
|
|
* @date April 18, 2009
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <cassert>
|
|
#include <cctype>
|
|
|
|
#include <string>
|
|
#include <algorithm>
|
|
#include <functional>
|
|
|
|
#include "ILexer.h"
|
|
#include "Scintilla.h"
|
|
#include "SciLexer.h"
|
|
|
|
#include "PropSetSimple.h"
|
|
#include "WordList.h"
|
|
#include "LexAccessor.h"
|
|
#include "Accessor.h"
|
|
#include "StyleContext.h"
|
|
#include "CharacterSet.h"
|
|
#include "LexerModule.h"
|
|
|
|
using namespace Scintilla;
|
|
|
|
namespace {
|
|
bool IsAlphabetic(unsigned int ch)
|
|
{
|
|
return IsASCII(ch) && std::isalpha(ch) != 0;
|
|
}
|
|
bool IsAlphaNumeric(char ch)
|
|
{
|
|
return IsASCII(ch) && std::isalnum(ch);
|
|
}
|
|
|
|
bool EqualCaseInsensitive(const char* a, const char* b)
|
|
{
|
|
return CompareCaseInsensitive(a, b) == 0;
|
|
}
|
|
|
|
bool EntryWithoutKey(const char* name)
|
|
{
|
|
return EqualCaseInsensitive(name,"string");
|
|
}
|
|
|
|
char GetClosingBrace(char openbrace)
|
|
{
|
|
char result = openbrace;
|
|
|
|
switch (openbrace) {
|
|
case '(': result = ')'; break;
|
|
case '{': result = '}'; break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
bool IsEntryStart(char prev, char ch)
|
|
{
|
|
return prev != '\\' && ch == '@';
|
|
}
|
|
|
|
bool IsEntryStart(const StyleContext& sc)
|
|
{
|
|
return IsEntryStart(sc.chPrev, sc.ch);
|
|
}
|
|
|
|
void ColorizeBibTeX(Sci_PositionU start_pos, Sci_Position length, int /*init_style*/, WordList* keywordlists[], Accessor& styler)
|
|
{
|
|
WordList &EntryNames = *keywordlists[0];
|
|
bool fold_compact = styler.GetPropertyInt("fold.compact", 1) != 0;
|
|
|
|
std::string buffer;
|
|
buffer.reserve(25);
|
|
|
|
// We always colorize a section from the beginning, so let's
|
|
// search for the @ character which isn't escaped, i.e. \@
|
|
while (start_pos > 0 && !IsEntryStart(styler.SafeGetCharAt(start_pos - 1),
|
|
styler.SafeGetCharAt(start_pos))) {
|
|
--start_pos; ++length;
|
|
}
|
|
|
|
styler.StartAt(start_pos);
|
|
styler.StartSegment(start_pos);
|
|
|
|
Sci_Position current_line = styler.GetLine(start_pos);
|
|
int prev_level = styler.LevelAt(current_line) & SC_FOLDLEVELNUMBERMASK;
|
|
int current_level = prev_level;
|
|
int visible_chars = 0;
|
|
|
|
bool in_comment = false ;
|
|
StyleContext sc(start_pos, length, SCE_BIBTEX_DEFAULT, styler);
|
|
|
|
bool going = sc.More(); // needed because of a fuzzy end of file state
|
|
char closing_brace = 0;
|
|
bool collect_entry_name = false;
|
|
|
|
for (; going; sc.Forward()) {
|
|
if (!sc.More())
|
|
going = false; // we need to go one behind the end of text
|
|
|
|
if (in_comment) {
|
|
if (sc.atLineEnd) {
|
|
sc.SetState(SCE_BIBTEX_DEFAULT);
|
|
in_comment = false;
|
|
}
|
|
}
|
|
else {
|
|
// Found @entry
|
|
if (IsEntryStart(sc)) {
|
|
sc.SetState(SCE_BIBTEX_UNKNOWN_ENTRY);
|
|
sc.Forward();
|
|
++current_level;
|
|
|
|
buffer.clear();
|
|
collect_entry_name = true;
|
|
}
|
|
else if ((sc.state == SCE_BIBTEX_ENTRY || sc.state == SCE_BIBTEX_UNKNOWN_ENTRY)
|
|
&& (sc.ch == '{' || sc.ch == '(')) {
|
|
// Entry name colorization done
|
|
// Found either a { or a ( after entry's name, e.g. @entry(...) @entry{...}
|
|
// Closing counterpart needs to be stored.
|
|
closing_brace = GetClosingBrace(sc.ch);
|
|
|
|
sc.SetState(SCE_BIBTEX_DEFAULT); // Don't colorize { (
|
|
|
|
// @string doesn't have any key
|
|
if (EntryWithoutKey(buffer.c_str()))
|
|
sc.ForwardSetState(SCE_BIBTEX_PARAMETER);
|
|
else
|
|
sc.ForwardSetState(SCE_BIBTEX_KEY); // Key/label colorization
|
|
}
|
|
|
|
// Need to handle the case where entry's key is empty
|
|
// e.g. @book{,...}
|
|
if (sc.state == SCE_BIBTEX_KEY && sc.ch == ',') {
|
|
// Key/label colorization done
|
|
sc.SetState(SCE_BIBTEX_DEFAULT); // Don't colorize the ,
|
|
sc.ForwardSetState(SCE_BIBTEX_PARAMETER); // Parameter colorization
|
|
}
|
|
else if (sc.state == SCE_BIBTEX_PARAMETER && sc.ch == '=') {
|
|
sc.SetState(SCE_BIBTEX_DEFAULT); // Don't colorize the =
|
|
sc.ForwardSetState(SCE_BIBTEX_VALUE); // Parameter value colorization
|
|
|
|
Sci_Position start = sc.currentPos;
|
|
|
|
// We need to handle multiple situations:
|
|
// 1. name"one two {three}"
|
|
// 2. name={one {one two {two}} three}
|
|
// 3. year=2005
|
|
|
|
// Skip ", { until we encounter the first alphanumerical character
|
|
while (sc.More() && !(IsAlphaNumeric(sc.ch) || sc.ch == '"' || sc.ch == '{'))
|
|
sc.Forward();
|
|
|
|
if (sc.More()) {
|
|
// Store " or {
|
|
char ch = sc.ch;
|
|
|
|
// Not interested in alphanumerical characters
|
|
if (IsAlphaNumeric(ch))
|
|
ch = 0;
|
|
|
|
int skipped = 0;
|
|
|
|
if (ch) {
|
|
// Skip preceding " or { such as in name={{test}}.
|
|
// Remember how many characters have been skipped
|
|
// Make sure that empty values, i.e. "" are also handled correctly
|
|
while (sc.More() && (sc.ch == ch && (ch != '"' || skipped < 1))) {
|
|
sc.Forward();
|
|
++skipped;
|
|
}
|
|
}
|
|
|
|
// Closing counterpart for " is the same character
|
|
if (ch == '{')
|
|
ch = '}';
|
|
|
|
// We have reached the parameter value
|
|
// In case the open character was a alnum char, skip until , is found
|
|
// otherwise until skipped == 0
|
|
while (sc.More() && (skipped > 0 || (!ch && !(sc.ch == ',' || sc.ch == closing_brace)))) {
|
|
// Make sure the character isn't escaped
|
|
if (sc.chPrev != '\\') {
|
|
// Parameter value contains a { which is the 2nd case described above
|
|
if (sc.ch == '{')
|
|
++skipped; // Remember it
|
|
else if (sc.ch == '}')
|
|
--skipped;
|
|
else if (skipped == 1 && sc.ch == ch && ch == '"') // Don't ignore cases like {"o}
|
|
skipped = 0;
|
|
}
|
|
|
|
sc.Forward();
|
|
}
|
|
}
|
|
|
|
// Don't colorize the ,
|
|
sc.SetState(SCE_BIBTEX_DEFAULT);
|
|
|
|
// Skip until the , or entry's closing closing_brace is found
|
|
// since this parameter might be the last one
|
|
while (sc.More() && !(sc.ch == ',' || sc.ch == closing_brace))
|
|
sc.Forward();
|
|
|
|
int state = SCE_BIBTEX_PARAMETER; // The might be more parameters
|
|
|
|
// We've reached the closing closing_brace for the bib entry
|
|
// in case no " or {} has been used to enclose the value,
|
|
// as in 3rd case described above
|
|
if (sc.ch == closing_brace) {
|
|
--current_level;
|
|
// Make sure the text between entries is not colored
|
|
// using parameter's style
|
|
state = SCE_BIBTEX_DEFAULT;
|
|
}
|
|
|
|
Sci_Position end = sc.currentPos;
|
|
current_line = styler.GetLine(end);
|
|
|
|
// We have possibly skipped some lines, so the folding levels
|
|
// have to be adjusted separately
|
|
for (Sci_Position i = styler.GetLine(start); i <= styler.GetLine(end); ++i)
|
|
styler.SetLevel(i, prev_level);
|
|
|
|
sc.ForwardSetState(state);
|
|
}
|
|
|
|
if (sc.state == SCE_BIBTEX_PARAMETER && sc.ch == closing_brace) {
|
|
sc.SetState(SCE_BIBTEX_DEFAULT);
|
|
--current_level;
|
|
}
|
|
|
|
// Non escaped % found which represents a comment until the end of the line
|
|
if (sc.chPrev != '\\' && sc.ch == '%') {
|
|
in_comment = true;
|
|
sc.SetState(SCE_BIBTEX_COMMENT);
|
|
}
|
|
}
|
|
|
|
if (sc.state == SCE_BIBTEX_UNKNOWN_ENTRY || sc.state == SCE_BIBTEX_ENTRY) {
|
|
if (!IsAlphabetic(sc.ch) && collect_entry_name)
|
|
collect_entry_name = false;
|
|
|
|
if (collect_entry_name) {
|
|
buffer += static_cast<char>(tolower(sc.ch));
|
|
if (EntryNames.InList(buffer.c_str()))
|
|
sc.ChangeState(SCE_BIBTEX_ENTRY);
|
|
else
|
|
sc.ChangeState(SCE_BIBTEX_UNKNOWN_ENTRY);
|
|
}
|
|
}
|
|
|
|
if (sc.atLineEnd) {
|
|
int level = prev_level;
|
|
|
|
if (visible_chars == 0 && fold_compact)
|
|
level |= SC_FOLDLEVELWHITEFLAG;
|
|
|
|
if ((current_level > prev_level))
|
|
level |= SC_FOLDLEVELHEADERFLAG;
|
|
// else if (current_level < prev_level)
|
|
// level |= SC_FOLDLEVELBOXFOOTERFLAG; // Deprecated
|
|
|
|
if (level != styler.LevelAt(current_line)) {
|
|
styler.SetLevel(current_line, level);
|
|
}
|
|
|
|
++current_line;
|
|
prev_level = current_level;
|
|
visible_chars = 0;
|
|
}
|
|
|
|
if (!isspacechar(sc.ch))
|
|
++visible_chars;
|
|
}
|
|
|
|
sc.Complete();
|
|
|
|
// Fill in the real level of the next line, keeping the current flags as they will be filled in later
|
|
int flagsNext = styler.LevelAt(current_line) & ~SC_FOLDLEVELNUMBERMASK;
|
|
styler.SetLevel(current_line, prev_level | flagsNext);
|
|
}
|
|
}
|
|
static const char * const BibTeXWordLists[] = {
|
|
"Entry Names",
|
|
0,
|
|
};
|
|
|
|
|
|
LexerModule lmBibTeX(SCLEX_BIBTEX, ColorizeBibTeX, "bib", 0, BibTeXWordLists);
|
|
|
|
// Entry Names
|
|
// article, book, booklet, conference, inbook,
|
|
// incollection, inproceedings, manual, mastersthesis,
|
|
// misc, phdthesis, proceedings, techreport, unpublished,
|
|
// string, url
|
|
|