src/eric7/QScintilla/Lexers/__init__.py

Wed, 13 Jul 2022 14:55:47 +0200

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Wed, 13 Jul 2022 14:55:47 +0200
branch
eric7
changeset 9221
bf71ee032bb4
parent 9209
b99e7fd55fd3
child 9413
80c06d472826
permissions
-rw-r--r--

Reformatted the source code using the 'Black' utility.

# -*- coding: utf-8 -*-

# Copyright (c) 2007 - 2022 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Package implementing lexers for the various supported programming languages.
"""

from PyQt6.QtCore import QCoreApplication

import Preferences
import UI.PixmapCache

# The lexer registry
# Dictionary with the language name as key. Each entry is a list with
#       0. display string (string)
#       1. dummy filename to derive lexer name (string)
#       2. reference to a function instantiating the specific lexer
#          This function must take a reference to the parent as argument.
#       3. list of open file filters (list of strings)
#       4. list of save file filters (list of strings)
#       5. default lexer associations (list of strings of filename wildcard
#          patterns to be associated with the lexer)
#       6. name of an icon file (string)
LexerRegistry = {}


def registerLexer(
    name,
    displayString,
    filenameSample,
    getLexerFunc,
    openFilters=None,
    saveFilters=None,
    defaultAssocs=None,
    iconFileName="",
):
    """
    Module function to register a custom QScintilla lexer.

    @param name lexer language name (string)
    @param displayString display string (string)
    @param filenameSample dummy filename to derive lexer name (string)
    @param getLexerFunc reference to a function instantiating the specific
        lexer. This function must take a reference to the parent as its only
        argument.
    @param openFilters list of open file filters (list of strings)
    @param saveFilters list of save file filters (list of strings)
    @param defaultAssocs default lexer associations (list of strings of
        filename wildcard patterns to be associated with the lexer)
    @param iconFileName name of an icon file (string)
    @exception KeyError raised when the given name is already in use
    """
    global LexerRegistry
    if name in LexerRegistry:
        raise KeyError('Lexer "{0}" already registered.'.format(name))
    else:
        LexerRegistry[name] = [
            displayString,
            filenameSample,
            getLexerFunc,
            [] if openFilters is None else openFilters[:],
            [] if saveFilters is None else saveFilters[:],
            [] if defaultAssocs is None else defaultAssocs[:],
            iconFileName,
        ]


def unregisterLexer(name):
    """
    Module function to unregister a custom QScintilla lexer.

    @param name lexer language name (string)
    """
    if name in LexerRegistry:
        del LexerRegistry[name]


def getSupportedLanguages():
    """
    Module function to get a dictionary of supported lexer languages.

    @return dictionary of supported lexer languages. The keys are the
        internal language names. The items are lists of three entries.
        The first is the display string for the language, the second
        is a dummy file name, which can be used to derive the lexer, and
        the third is the name of an icon file.
        (string, string, string)
    """
    supportedLanguages = {
        "Bash": [QCoreApplication.translate("Lexers", "Bash"), "dummy.sh", "lexerBash"],
        "Batch": [
            QCoreApplication.translate("Lexers", "Batch"),
            "dummy.bat",
            "lexerBatch",
        ],
        "C++": [QCoreApplication.translate("Lexers", "C/C++"), "dummy.cpp", "lexerCPP"],
        "C#": [QCoreApplication.translate("Lexers", "C#"), "dummy.cs", "lexerCsharp"],
        "CMake": [
            QCoreApplication.translate("Lexers", "CMake"),
            "dummy.cmake",
            "lexerCMake",
        ],
        "CSS": [QCoreApplication.translate("Lexers", "CSS"), "dummy.css", "lexerCSS"],
        "Cython": [
            QCoreApplication.translate("Lexers", "Cython"),
            "dummy.pyx",
            "lexerCython",
        ],
        "D": [QCoreApplication.translate("Lexers", "D"), "dummy.d", "lexerD"],
        "Diff": [
            QCoreApplication.translate("Lexers", "Diff"),
            "dummy.diff",
            "lexerDiff",
        ],
        "Fortran": [
            QCoreApplication.translate("Lexers", "Fortran"),
            "dummy.f95",
            "lexerFortran",
        ],
        "Fortran77": [
            QCoreApplication.translate("Lexers", "Fortran77"),
            "dummy.f",
            "lexerFortran",
        ],
        "HTML": [
            QCoreApplication.translate("Lexers", "HTML/PHP/XML"),
            "dummy.html",
            "lexerHTML",
        ],
        "IDL": [QCoreApplication.translate("Lexers", "IDL"), "dummy.idl", "lexerIDL"],
        "Java": [
            QCoreApplication.translate("Lexers", "Java"),
            "dummy.java",
            "lexerJava",
        ],
        "JavaScript": [
            QCoreApplication.translate("Lexers", "JavaScript"),
            "dummy.js",
            "lexerJavaScript",
        ],
        "Lua": [QCoreApplication.translate("Lexers", "Lua"), "dummy.lua", "lexerLua"],
        "Makefile": [
            QCoreApplication.translate("Lexers", "Makefile"),
            "dummy.mak",
            "lexerMakefile",
        ],
        "Matlab": [
            QCoreApplication.translate("Lexers", "Matlab"),
            "dummy.m.matlab",
            "lexerMatlab",
        ],
        "Octave": [
            QCoreApplication.translate("Lexers", "Octave"),
            "dummy.m.octave",
            "lexerOctave",
        ],
        "Pascal": [
            QCoreApplication.translate("Lexers", "Pascal"),
            "dummy.pas",
            "lexerPascal",
        ],
        "Perl": [QCoreApplication.translate("Lexers", "Perl"), "dummy.pl", "lexerPerl"],
        "PostScript": [
            QCoreApplication.translate("Lexers", "PostScript"),
            "dummy.ps",
            "lexerPostscript",
        ],
        "Povray": [
            QCoreApplication.translate("Lexers", "Povray"),
            "dummy.pov",
            "lexerPOV",
        ],
        "Properties": [
            QCoreApplication.translate("Lexers", "Properties"),
            "dummy.ini",
            "lexerProperties",
        ],
        "Protocol Buffer": [
            QCoreApplication.translate("Lexers", "Protocol Buffer (protobuf)"),
            "dummy.proto",
            "protobuf",
        ],
        "Python3": [
            QCoreApplication.translate("Lexers", "Python3"),
            "dummy.py",
            "lexerPython3",
        ],
        "MicroPython": [
            QCoreApplication.translate("Lexers", "MicroPython"),
            "dummy.py",
            "micropython",
        ],
        "QSS": [QCoreApplication.translate("Lexers", "QSS"), "dummy.qss", "lexerCSS"],
        "Ruby": [QCoreApplication.translate("Lexers", "Ruby"), "dummy.rb", "lexerRuby"],
        "SQL": [QCoreApplication.translate("Lexers", "SQL"), "dummy.sql", "lexerSQL"],
        "TCL": [QCoreApplication.translate("Lexers", "TCL"), "dummy.tcl", "lexerTCL"],
        "TeX": [QCoreApplication.translate("Lexers", "TeX"), "dummy.tex", "lexerTeX"],
        "VHDL": [
            QCoreApplication.translate("Lexers", "VHDL"),
            "dummy.vhd",
            "lexerVHDL",
        ],
        "XML": [QCoreApplication.translate("Lexers", "XML"), "dummy.xml", "lexerXML"],
        "YAML": [
            QCoreApplication.translate("Lexers", "YAML"),
            "dummy.yml",
            "lexerYAML",
        ],
        "Gettext": [
            QCoreApplication.translate("Lexers", "Gettext"),
            "dummy.po",
            "lexerGettext",
        ],
        "CoffeeScript": [
            QCoreApplication.translate("Lexers", "CoffeeScript"),
            "dummy.coffee",
            "lexerCoffeeScript",
        ],
        "JSON": [
            QCoreApplication.translate("Lexers", "JSON"),
            "dummy.json",
            "lexerJSON",
        ],
        "Markdown": [
            QCoreApplication.translate("Lexers", "Markdown"),
            "dummy.md",
            "lexerMarkdown",
        ],
    }

    for name in LexerRegistry:
        if not name.startswith("Pygments|"):
            supportedLanguages[name] = LexerRegistry[name][:2] + [
                LexerRegistry[name][6]
            ]

    supportedLanguages["Guessed"] = [
        QCoreApplication.translate("Lexers", "Pygments"),
        "dummy.pygments",
        "",
    ]

    return supportedLanguages


def getSupportedApiLanguages():
    """
    Module function to get a list of supported API languages.

    @return list of supported API languages
    @rtype list of str
    """
    return [
        lang
        for lang in getSupportedLanguages().keys()
        if lang != "Guessed" and not lang.startswith("Pygments|")
    ]


def getLanguageIcon(language, pixmap):
    """
    Module function to get an icon for a language.

    @param language language of the lexer (string)
    @param pixmap flag indicating to return a pixmap (boolean)
    @return icon for the language (QPixmap or QIcon)
    """
    supportedLanguages = getSupportedLanguages()
    iconFileName = (
        supportedLanguages[language][2] if language in supportedLanguages else ""
    )
    if pixmap:
        return UI.PixmapCache.getPixmap(iconFileName)
    else:
        return UI.PixmapCache.getIcon(iconFileName)


def getLexer(language, parent=None, pyname=""):
    """
    Module function to instantiate a lexer object for a given language.

    @param language language of the lexer (string)
    @param parent reference to the parent object (QObject)
    @param pyname name of the pygments lexer to use (string)
    @return reference to the instantiated lexer object (QsciLexer)
    """
    if not pyname:
        try:
            if language in ["Python", "Python3", "Cython", "MicroPython"]:
                from .LexerPython import LexerPython

                return LexerPython(language, parent)
            elif language == "C++":
                from .LexerCPP import LexerCPP

                return LexerCPP(
                    parent, Preferences.getEditor("CppCaseInsensitiveKeywords")
                )
            elif language == "C#":
                from .LexerCSharp import LexerCSharp

                return LexerCSharp(parent)
            elif language == "IDL":
                from .LexerIDL import LexerIDL

                return LexerIDL(parent)
            elif language == "Java":
                from .LexerJava import LexerJava

                return LexerJava(parent)
            elif language == "JavaScript":
                from .LexerJavaScript import LexerJavaScript

                return LexerJavaScript(parent)
            elif language == "SQL":
                from .LexerSQL import LexerSQL

                return LexerSQL(parent)
            elif language == "HTML":
                from .LexerHTML import LexerHTML

                return LexerHTML(parent)
            elif language == "Perl":
                from .LexerPerl import LexerPerl

                return LexerPerl(parent)
            elif language == "Bash":
                from .LexerBash import LexerBash

                return LexerBash(parent)
            elif language == "Ruby":
                from .LexerRuby import LexerRuby

                return LexerRuby(parent)
            elif language == "Lua":
                from .LexerLua import LexerLua

                return LexerLua(parent)
            elif language == "CSS":
                from .LexerCSS import LexerCSS

                return LexerCSS(parent)
            elif language == "TeX":
                from .LexerTeX import LexerTeX

                return LexerTeX(parent)
            elif language == "Diff":
                from .LexerDiff import LexerDiff

                return LexerDiff(parent)
            elif language == "Makefile":
                from .LexerMakefile import LexerMakefile

                return LexerMakefile(parent)
            elif language == "Properties":
                from .LexerProperties import LexerProperties

                return LexerProperties(parent)
            elif language == "Batch":
                from .LexerBatch import LexerBatch

                return LexerBatch(parent)
            elif language == "D":
                from .LexerD import LexerD

                return LexerD(parent)
            elif language == "Povray":
                from .LexerPOV import LexerPOV

                return LexerPOV(parent)
            elif language == "CMake":
                from .LexerCMake import LexerCMake

                return LexerCMake(parent)
            elif language == "VHDL":
                from .LexerVHDL import LexerVHDL

                return LexerVHDL(parent)
            elif language == "TCL":
                from .LexerTCL import LexerTCL

                return LexerTCL(parent)
            elif language == "Fortran":
                from .LexerFortran import LexerFortran

                return LexerFortran(parent)
            elif language == "Fortran77":
                from .LexerFortran77 import LexerFortran77

                return LexerFortran77(parent)
            elif language == "Pascal":
                from .LexerPascal import LexerPascal

                return LexerPascal(parent)
            elif language == "PostScript":
                from .LexerPostScript import LexerPostScript

                return LexerPostScript(parent)
            elif language == "XML":
                from .LexerXML import LexerXML

                return LexerXML(parent)
            elif language == "YAML":
                from .LexerYAML import LexerYAML

                return LexerYAML(parent)
            elif language == "Matlab":
                from .LexerMatlab import LexerMatlab

                return LexerMatlab(parent)
            elif language == "Octave":
                from .LexerOctave import LexerOctave

                return LexerOctave(parent)
            elif language == "QSS":
                from .LexerQSS import LexerQSS

                return LexerQSS(parent)
            elif language == "Gettext":
                from .LexerPO import LexerPO

                return LexerPO(parent)
            elif language == "CoffeeScript":
                from .LexerCoffeeScript import LexerCoffeeScript

                return LexerCoffeeScript(parent)
            elif language == "JSON":
                from .LexerJSON import LexerJSON

                return LexerJSON(parent)
            elif language == "Markdown":
                from .LexerMarkdown import LexerMarkdown

                return LexerMarkdown(parent)

            elif language == "Protocol Buffer":
                return __getPygmentsLexer(parent, name="Protocol Buffer")

            elif language in LexerRegistry:
                return LexerRegistry[language][2](parent)

            else:
                return __getPygmentsLexer(parent)
        except ImportError:
            return __getPygmentsLexer(parent)
    else:
        return __getPygmentsLexer(parent, name=pyname)


def __getPygmentsLexer(parent, name=""):
    """
    Private module function to instantiate a pygments lexer.

    @param parent reference to the parent widget
    @param name name of the pygments lexer to use (string)
    @return reference to the lexer (LexerPygments) or None
    """
    from .LexerPygments import LexerPygments

    lexer = LexerPygments(parent, name=name)
    if lexer.canStyle():
        return lexer
    else:
        return None


def getOpenFileFiltersList(includeAll=False, asString=False, withAdditional=True):
    """
    Module function to get the file filter list for an open file operation.

    @param includeAll flag indicating the inclusion of the
        All Files filter (boolean)
    @param asString flag indicating the list should be returned
        as a string (boolean)
    @param withAdditional flag indicating to include additional filters
        defined by the user (boolean)
    @return file filter list (list of strings or string)
    """
    openFileFiltersList = [
        QCoreApplication.translate("Lexers", "Python Files (*.py *.py3)"),
        QCoreApplication.translate("Lexers", "Python GUI Files (*.pyw *.pyw3)"),
        QCoreApplication.translate("Lexers", "Cython Files (*.pyx *.pxd *.pxi)"),
        QCoreApplication.translate("Lexers", "Quixote Template Files (*.ptl)"),
        QCoreApplication.translate("Lexers", "Ruby Files (*.rb)"),
        QCoreApplication.translate("Lexers", "IDL Files (*.idl)"),
        QCoreApplication.translate("Lexers", "Protocol Buffer Files (*.proto)"),
        QCoreApplication.translate("Lexers", "C Files (*.h *.c)"),
        QCoreApplication.translate(
            "Lexers", "C++ Files (*.h *.hpp *.hh *.cxx *.cpp *.cc)"
        ),
        QCoreApplication.translate("Lexers", "C# Files (*.cs)"),
        QCoreApplication.translate("Lexers", "HTML Files (*.html *.htm *.asp *.shtml)"),
        QCoreApplication.translate("Lexers", "CSS Files (*.css)"),
        QCoreApplication.translate("Lexers", "QSS Files (*.qss)"),
        QCoreApplication.translate(
            "Lexers", "PHP Files (*.php *.php3 *.php4 *.php5 *.phtml)"
        ),
        QCoreApplication.translate(
            "Lexers", "XML Files (*.xml *.xsl *.xslt *.dtd *.svg *.xul *.xsd)"
        ),
        QCoreApplication.translate("Lexers", "Qt Resource Files (*.qrc)"),
        QCoreApplication.translate("Lexers", "D Files (*.d *.di)"),
        QCoreApplication.translate("Lexers", "Java Files (*.java)"),
        QCoreApplication.translate("Lexers", "JavaScript Files (*.js)"),
        QCoreApplication.translate("Lexers", "SQL Files (*.sql)"),
        QCoreApplication.translate("Lexers", "Docbook Files (*.docbook)"),
        QCoreApplication.translate("Lexers", "Perl Files (*.pl *.pm *.ph)"),
        QCoreApplication.translate("Lexers", "Lua Files (*.lua)"),
        QCoreApplication.translate(
            "Lexers", "Tex Files (*.tex *.sty *.aux *.toc *.idx)"
        ),
        QCoreApplication.translate("Lexers", "Shell Files (*.sh)"),
        QCoreApplication.translate("Lexers", "Batch Files (*.bat *.cmd)"),
        QCoreApplication.translate("Lexers", "Diff Files (*.diff *.patch)"),
        QCoreApplication.translate("Lexers", "Makefiles (*makefile Makefile *.mak)"),
        QCoreApplication.translate(
            "Lexers",
            "Properties Files (*.properties *.ini *.inf *.reg *.cfg" " *.cnf *.rc)",
        ),
        QCoreApplication.translate("Lexers", "Povray Files (*.pov)"),
        QCoreApplication.translate(
            "Lexers", "CMake Files (CMakeLists.txt *.cmake *.ctest)"
        ),
        QCoreApplication.translate("Lexers", "VHDL Files (*.vhd *.vhdl)"),
        QCoreApplication.translate("Lexers", "TCL/Tk Files (*.tcl *.tk)"),
        QCoreApplication.translate("Lexers", "Fortran Files (*.f90 *.f95 *.f2k)"),
        QCoreApplication.translate("Lexers", "Fortran77 Files (*.f *.for)"),
        QCoreApplication.translate(
            "Lexers", "Pascal Files (*.dpr *.dpk *.pas *.dfm *.inc *.pp)"
        ),
        QCoreApplication.translate("Lexers", "PostScript Files (*.ps)"),
        QCoreApplication.translate("Lexers", "YAML Files (*.yaml *.yml)"),
        QCoreApplication.translate("Lexers", "TOML Files (*.toml)"),
        QCoreApplication.translate("Lexers", "Matlab Files (*.m *.m.matlab)"),
        QCoreApplication.translate("Lexers", "Octave Files (*.m *.m.octave)"),
        QCoreApplication.translate("Lexers", "Gettext Files (*.po)"),
        QCoreApplication.translate("Lexers", "CoffeeScript Files (*.coffee)"),
        QCoreApplication.translate("Lexers", "JSON Files (*.json)"),
        QCoreApplication.translate("Lexers", "Markdown Files (*.md)"),
    ]

    for name in LexerRegistry:
        openFileFiltersList.extend(LexerRegistry[name][3])

    if withAdditional:
        openFileFiltersList.extend(Preferences.getEditor("AdditionalOpenFilters"))

    openFileFiltersList.sort()
    if includeAll:
        openFileFiltersList.append(
            QCoreApplication.translate("Lexers", "All Files (*)")
        )

    if asString:
        return ";;".join(openFileFiltersList)
    else:
        return openFileFiltersList


def getSaveFileFiltersList(includeAll=False, asString=False, withAdditional=True):
    """
    Module function to get the file filter list for a save file operation.

    @param includeAll flag indicating the inclusion of the
        All Files filter (boolean)
    @param asString flag indicating the list should be returned
        as a string (boolean)
    @param withAdditional flag indicating to include additional filters
        defined by the user (boolean)
    @return file filter list (list of strings or string)
    """
    saveFileFiltersList = [
        QCoreApplication.translate("Lexers", "Python3 Files (*.py)"),
        QCoreApplication.translate("Lexers", "Python3 GUI Files (*.pyw)"),
        QCoreApplication.translate("Lexers", "Cython Files (*.pyx)"),
        QCoreApplication.translate("Lexers", "Cython Declaration Files (*.pxd)"),
        QCoreApplication.translate("Lexers", "Cython Include Files (*.pxi)"),
        QCoreApplication.translate("Lexers", "Quixote Template Files (*.ptl)"),
        QCoreApplication.translate("Lexers", "Ruby Files (*.rb)"),
        QCoreApplication.translate("Lexers", "IDL Files (*.idl)"),
        QCoreApplication.translate("Lexers", "Protocol Buffer Files (*.proto)"),
        QCoreApplication.translate("Lexers", "C Files (*.c)"),
        QCoreApplication.translate("Lexers", "C++ Files (*.cpp)"),
        QCoreApplication.translate("Lexers", "C++/C Header Files (*.h)"),
        QCoreApplication.translate("Lexers", "C# Files (*.cs)"),
        QCoreApplication.translate("Lexers", "HTML Files (*.html)"),
        QCoreApplication.translate("Lexers", "PHP Files (*.php)"),
        QCoreApplication.translate("Lexers", "ASP Files (*.asp)"),
        QCoreApplication.translate("Lexers", "CSS Files (*.css)"),
        QCoreApplication.translate("Lexers", "QSS Files (*.qss)"),
        QCoreApplication.translate("Lexers", "XML Files (*.xml)"),
        QCoreApplication.translate("Lexers", "XSL Files (*.xsl)"),
        QCoreApplication.translate("Lexers", "DTD Files (*.dtd)"),
        QCoreApplication.translate("Lexers", "Qt Resource Files (*.qrc)"),
        QCoreApplication.translate("Lexers", "D Files (*.d)"),
        QCoreApplication.translate("Lexers", "D Interface Files (*.di)"),
        QCoreApplication.translate("Lexers", "Java Files (*.java)"),
        QCoreApplication.translate("Lexers", "JavaScript Files (*.js)"),
        QCoreApplication.translate("Lexers", "SQL Files (*.sql)"),
        QCoreApplication.translate("Lexers", "Docbook Files (*.docbook)"),
        QCoreApplication.translate("Lexers", "Perl Files (*.pl)"),
        QCoreApplication.translate("Lexers", "Perl Module Files (*.pm)"),
        QCoreApplication.translate("Lexers", "Lua Files (*.lua)"),
        QCoreApplication.translate("Lexers", "Shell Files (*.sh)"),
        QCoreApplication.translate("Lexers", "Batch Files (*.bat)"),
        QCoreApplication.translate("Lexers", "TeX Files (*.tex)"),
        QCoreApplication.translate("Lexers", "TeX Template Files (*.sty)"),
        QCoreApplication.translate("Lexers", "Diff Files (*.diff)"),
        QCoreApplication.translate("Lexers", "Make Files (*.mak)"),
        QCoreApplication.translate("Lexers", "Properties Files (*.ini)"),
        QCoreApplication.translate("Lexers", "Configuration Files (*.cfg)"),
        QCoreApplication.translate("Lexers", "Povray Files (*.pov)"),
        QCoreApplication.translate("Lexers", "CMake Files (CMakeLists.txt)"),
        QCoreApplication.translate("Lexers", "CMake Macro Files (*.cmake)"),
        QCoreApplication.translate("Lexers", "VHDL Files (*.vhd)"),
        QCoreApplication.translate("Lexers", "TCL Files (*.tcl)"),
        QCoreApplication.translate("Lexers", "Tk Files (*.tk)"),
        QCoreApplication.translate("Lexers", "Fortran Files (*.f95)"),
        QCoreApplication.translate("Lexers", "Fortran77 Files (*.f)"),
        QCoreApplication.translate("Lexers", "Pascal Files (*.pas)"),
        QCoreApplication.translate("Lexers", "PostScript Files (*.ps)"),
        QCoreApplication.translate("Lexers", "YAML Files (*.yml)"),
        QCoreApplication.translate("Lexers", "TOML Files (*.toml)"),
        QCoreApplication.translate("Lexers", "Matlab Files (*.m)"),
        QCoreApplication.translate("Lexers", "Octave Files (*.m.octave)"),
        QCoreApplication.translate("Lexers", "Gettext Files (*.po)"),
        QCoreApplication.translate("Lexers", "CoffeeScript Files (*.coffee)"),
        QCoreApplication.translate("Lexers", "JSON Files (*.json)"),
        QCoreApplication.translate("Lexers", "Markdown Files (*.md)"),
    ]

    for name in LexerRegistry:
        saveFileFiltersList.extend(LexerRegistry[name][4])

    if withAdditional:
        saveFileFiltersList.extend(Preferences.getEditor("AdditionalSaveFilters"))

    saveFileFiltersList.sort()

    if includeAll:
        saveFileFiltersList.append(
            QCoreApplication.translate("Lexers", "All Files (*)")
        )

    if asString:
        return ";;".join(saveFileFiltersList)
    else:
        return saveFileFiltersList


def getDefaultLexerAssociations():
    """
    Module function to get a dictionary with the default associations.

    @return dictionary with the default lexer associations
    """
    assocs = {
        "*.sh": "Bash",
        "*.bash": "Bash",
        "*.bat": "Batch",
        "*.cmd": "Batch",
        "*.cpp": "C++",
        "*.cxx": "C++",
        "*.cc": "C++",
        "*.c": "C++",
        "*.hpp": "C++",
        "*.hh": "C++",
        "*.h": "C++",
        "*.cs": "C#",
        "CMakeLists.txt": "CMake",
        "*.cmake": "CMake",
        "*.cmake.in": "CMake",
        "*.ctest": "CMake",
        "*.ctest.in": "CMake",
        "*.css": "CSS",
        "*.qss": "QSS",
        "*.d": "D",
        "*.di": "D",
        "*.diff": "Diff",
        "*.patch": "Diff",
        "*.html": "HTML",
        "*.htm": "HTML",
        "*.asp": "HTML",
        "*.shtml": "HTML",
        "*.php": "HTML",
        "*.php3": "HTML",
        "*.php4": "HTML",
        "*.php5": "HTML",
        "*.phtml": "HTML",
        "*.docbook": "HTML",
        "*.ui": "HTML",
        "*.ts": "HTML",
        "*.qrc": "HTML",
        "*.kid": "HTML",
        "*.idl": "IDL",
        "*.java": "Java",
        "*.js": "JavaScript",
        "*.lua": "Lua",
        "*makefile": "Makefile",
        "Makefile*": "Makefile",
        "*.mak": "Makefile",
        "*.pl": "Perl",
        "*.pm": "Perl",
        "*.ph": "Perl",
        "*.pov": "Povray",
        "*.properties": "Properties",
        "*.ini": "Properties",
        "*.inf": "Properties",
        "*.reg": "Properties",
        "*.cfg": "Properties",
        "*.cnf": "Properties",
        "*.rc": "Properties",
        "*.py": "Python",
        "*.pyw": "Python",
        "*.py3": "Python",
        "*.pyw3": "Python",
        "*.pyx": "Cython",
        "*.pxd": "Cython",
        "*.pxi": "Cython",
        "*.ptl": "Python",
        "*.rb": "Ruby",
        "*.rbw": "Ruby",
        "*.sql": "SQL",
        "*.tex": "TeX",
        "*.sty": "TeX",
        "*.aux": "TeX",
        "*.toc": "TeX",
        "*.idx": "TeX",
        "*.vhd": "VHDL",
        "*.vhdl": "VHDL",
        "*.tcl": "TCL",
        "*.tk": "TCL",
        "*.f": "Fortran77",
        "*.for": "Fortran77",
        "*.f90": "Fortran",
        "*.f95": "Fortran",
        "*.f2k": "Fortran",
        "*.dpr": "Pascal",
        "*.dpk": "Pascal",
        "*.pas": "Pascal",
        "*.dfm": "Pascal",
        "*.inc": "Pascal",
        "*.pp": "Pascal",
        "*.ps": "PostScript",
        "*.xml": "XML",
        "*.xsl": "XML",
        "*.svg": "XML",
        "*.xsd": "XML",
        "*.xslt": "XML",
        "*.dtd": "XML",
        "*.rdf": "XML",
        "*.xul": "XML",
        "*.yaml": "YAML",
        "*.yml": "YAML",
        "*.m": "Matlab",
        "*.m.matlab": "Matlab",
        "*.m.octave": "Octave",
        "*.e4c": "XML",
        "*.e4d": "XML",
        "*.e4k": "XML",
        "*.e4m": "XML",
        "*.e4p": "XML",
        "*.e4q": "XML",
        "*.e4s": "XML",
        "*.e4t": "XML",
        "*.e5d": "XML",
        "*.e5k": "XML",
        "*.e5m": "XML",
        "*.e5p": "XML",
        "*.e5q": "XML",
        "*.e5s": "XML",
        "*.e5t": "XML",
        "*.e6d": "XML",
        "*.e6k": "XML",
        "*.e6m": "XML",
        "*.e6p": "XML",
        "*.e6q": "XML",
        "*.e6s": "XML",
        "*.e6t": "XML",
        "*.ecj": "JSON",
        "*.edj": "JSON",
        "*.egj": "JSON",
        "*.ehj": "JSON",
        "*.ekj": "JSON",
        "*.emj": "JSON",
        "*.epj": "JSON",
        "*.eqj": "JSON",
        "*.esj": "JSON",
        "*.etj": "JSON",
        "*.ethj": "JSON",
        "*.proto": "Protocol Buffer",
        "*.po": "Gettext",
        "*.coffee": "CoffeeScript",
        "*.json": "JSON",
        "*.md": "Markdown",
        "*.toml": "Pygments|TOML",
        "Pipfile": "Pygments|TOML",
        "poetry.lock": "Pygments|TOML",
    }

    for name in LexerRegistry:
        for pattern in LexerRegistry[name][5]:
            assocs[pattern] = name

    return assocs

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