eric6/Globals/__init__.py

changeset 6942
2602857055c5
parent 6914
5ae038f273c4
child 7085
328f0f44aa95
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/eric6/Globals/__init__.py	Sun Apr 14 15:09:21 2019 +0200
@@ -0,0 +1,549 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2006 - 2019 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module defining common data to be used by all modules.
+"""
+
+#
+# Note: Do not import any eric stuff in here!!!!!!!
+#
+
+from __future__ import unicode_literals
+try:
+    str = unicode       # __IGNORE_EXCEPTION__
+except NameError:
+    pass
+
+import sys
+import os
+import re
+import shutil
+
+from PyQt5.QtCore import QDir, QLibraryInfo, QByteArray, QCoreApplication, \
+    QT_VERSION_STR, QT_VERSION, QProcess, qVersion
+
+# names of the various settings objects
+settingsNameOrganization = "Eric6"
+settingsNameGlobal = "eric6"
+settingsNameRecent = "eric6recent"
+
+# key names of the various recent entries
+recentNameMultiProject = "MultiProjects"
+recentNameProject = "Projects"
+recentNameFiles = "Files"
+recentNameHexFiles = "HexFiles"
+recentNameHosts = "Hosts6"
+recentNameBreakpointFiles = "BreakPointFiles"
+recentNameBreakpointConditions = "BreakPointConditions"
+
+configDir = None
+
+
+def isWindowsPlatform():
+    """
+    Function to check, if this is a Windows platform.
+    
+    @return flag indicating Windows platform (boolean)
+    """
+    return sys.platform.startswith(("win", "cygwin"))
+
+
+def isMacPlatform():
+    """
+    Function to check, if this is a Mac platform.
+    
+    @return flag indicating Mac platform (boolean)
+    """
+    return sys.platform == "darwin"
+
+
+def isLinuxPlatform():
+    """
+    Function to check, if this is a Linux platform.
+    
+    @return flag indicating Linux platform (boolean)
+    """
+    return sys.platform.startswith("linux")
+
+
+def desktopName():
+    """
+    Function to determine the name of the desktop environment used
+    (Linux only).
+    
+    @return name of the desktop environment
+    @rtype str
+    """
+    if not isLinuxPlatform():
+        return ""
+    
+    currDesktop = os.environ.get("XDG_CURRENT_DESKTOP", "")
+    if currDesktop:
+        return currDesktop
+    
+    currDesktop = os.environ.get("XDG_SESSION_DESKTOP", "")
+    if currDesktop:
+        return currDesktop
+    
+    currDesktop = os.environ.get("GDMSESSION", "")
+    if currDesktop:
+        return currDesktop
+    
+    currDesktop = os.environ.get("GNOME_DESKTOP_SESSION_ID", "")
+    if currDesktop:
+        return currDesktop
+    
+    currDesktop = os.environ.get("KDE_FULL_SESSION", "")
+    if currDesktop:
+        return currDesktop
+    
+    currDesktop = os.environ.get("DESKTOP_SESSION", "")
+    if currDesktop:
+        return currDesktop
+    
+    return ""
+
+
+def isKdeDesktop():
+    """
+    Function to check, if the current session is a KDE desktop (Linux only).
+    
+    @return flag indicating a KDE desktop
+    @rtype bool
+    """
+    if not isLinuxPlatform():
+        return False
+    
+    isKDE = False
+    
+    desktop = os.environ.get("XDG_CURRENT_DESKTOP", "").lower() or \
+        os.environ.get("XDG_SESSION_DESKTOP", "").lower() or \
+        os.environ.get("DESKTOP_SESSION", "").lower()
+    if desktop:
+        isKDE = "kde" in desktop or "plasma" in desktop
+    else:
+        isKDE = bool(os.environ.get("KDE_FULL_SESSION", ""))
+    
+    return isKDE
+
+
+def isGnomeDesktop():
+    """
+    Function to check, if the current session is a Gnome desktop (Linux only).
+    
+    @return flag indicating a Gnome desktop
+    @rtype bool
+    """
+    if not isLinuxPlatform():
+        return False
+    
+    isGnome = False
+    
+    desktop = os.environ.get("XDG_CURRENT_DESKTOP", "").lower() or \
+        os.environ.get("XDG_SESSION_DESKTOP", "").lower() or \
+        os.environ.get("GDMSESSION", "").lower()
+    if desktop:
+        isGnome = "gnome" in desktop
+    else:
+        isGnome = bool(os.environ.get("GNOME_DESKTOP_SESSION_ID", ""))
+    
+    return isGnome
+
+
+def sessionType():
+    """
+    Function to determine the name of the running session (Linux only).
+    
+    @return name of the desktop environment
+    @rtype str
+    """
+    if not isLinuxPlatform():
+        return ""
+    
+    sessionType = os.environ.get("XDG_SESSION_TYPE").lower()
+    if "x11" in sessionType:
+        return "X11"
+    elif "wayland" in sessionType:
+        return "Wayland"
+    
+    sessionType = os.environ.get("WAYLAND_DISPLAY", "").lower()
+    if "wayland" in sessionType:
+        return "Wayland"
+    
+    return ""
+
+
+def isWaylandSession():
+    """
+    Function to check, if the current session is a wayland session.
+    
+    @return flag indicating a wayland session
+    @rtype bool
+    """
+    return sessionType() == "Wayland"
+
+
+def getConfigDir():
+    """
+    Module function to get the name of the directory storing the config data.
+    
+    @return directory name of the config dir (string)
+    """
+    if configDir is not None and os.path.exists(configDir):
+        hp = configDir
+    else:
+        cdn = ".eric6"
+        if isWindowsPlatform():
+            # migrate the old config directory (< v18.06)
+            cdnOld = "_eric6"
+            hpOld = os.path.join(os.path.expanduser("~"), cdnOld)
+            if os.path.exists(hpOld):
+                hpNew = os.path.join(os.path.expanduser("~"), cdn)
+                if os.path.exists(hpNew):
+                    # simply delete the old config directory
+                    shutil.rmtree(hpOld, True)
+                else:
+                    os.rename(hpOld, hpNew)
+        
+        hp = os.path.join(os.path.expanduser("~"), cdn)
+        if not os.path.exists(hp):
+            os.mkdir(hp)
+    return hp
+
+
+def setConfigDir(d):
+    """
+    Module function to set the name of the directory storing the config data.
+    
+    @param d name of an existing directory (string)
+    """
+    global configDir
+    configDir = os.path.expanduser(d)
+
+
+def getPythonModulesDirectory():
+    """
+    Function to determine the path to Python's modules directory.
+    
+    @return path to the Python modules directory (string)
+    """
+    import distutils.sysconfig
+    return distutils.sysconfig.get_python_lib(True)
+
+
+def getPyQt5ModulesDirectory():
+    """
+    Function to determine the path to PyQt5's (or PyQt4's) modules directory.
+    
+    @return path to the PyQt5/PyQt4 modules directory (string)
+    """
+    import distutils.sysconfig
+    for pyqt in ["PyQt5", "PyQt4"]:
+        pyqtPath = os.path.join(distutils.sysconfig.get_python_lib(True), pyqt)
+        if os.path.exists(pyqtPath):
+            return pyqtPath
+    
+    return ""
+    
+
+def getPyQtToolsPath(version=5):
+    """
+    Module function to get the path of the PyQt tools.
+    
+    @param version PyQt major version
+    @type int
+    @return path to the PyQt tools
+    @rtype str
+    """
+    import Preferences
+    
+    path = ""
+    
+    # step 1: check, if the user has configured a tools path
+    path = Preferences.getQt("PyQtToolsDir")
+    
+    # step 2: determine from used Python interpreter (pyrcc is test object)
+    if not path:
+        program = "pyrcc{0}".format(version)
+        if isWindowsPlatform():
+            program += ".exe"
+            dirName = os.path.dirname(sys.executable)
+            if os.path.exists(os.path.join(dirName, program)):
+                path = dirName
+            elif os.path.exists(os.path.join(dirName, "Scripts", program)):
+                path = os.path.join(dirName, "Scripts")
+        else:
+            dirName = os.path.dirname(sys.executable)
+            if os.path.exists(os.path.join(dirName, program)):
+                path = dirName
+    
+    return path
+
+
+def getQtBinariesPath():
+    """
+    Module function to get the path of the Qt binaries.
+    
+    @return path of the Qt binaries (string)
+    """
+    import Preferences
+    
+    path = ""
+    
+    # step 1: check, if the user has configured a tools path
+    path = Preferences.getQt("QtToolsDir")
+    
+    if not path and isWindowsPlatform():
+        # step 2.1: check for PyQt5 Windows installer (designer is test object)
+        modDir = getPyQt5ModulesDirectory()
+        if os.path.exists(os.path.join(modDir, "bin", "designer.exe")):
+            path = os.path.join(modDir, "bin")
+        elif os.path.exists(os.path.join(modDir, "designer.exe")):
+            path = modDir
+        
+        if not path:
+            import distutils.sysconfig
+            # step 2.2.1: check for the pyqt5-tools wheel (new variant)
+            # (Windows only)
+            pyqt5ToolsPath = os.path.join(
+                distutils.sysconfig.get_python_lib(True), "pyqt5_tools")
+            if os.path.exists(os.path.join(pyqt5ToolsPath, "designer.exe")):
+                path = pyqt5ToolsPath
+            if not path:
+                # step 2.2.2: check for the pyqt5-tools wheel (old variant)
+                # (Windows only)
+                pyqt5ToolsPath = os.path.join(
+                    distutils.sysconfig.get_python_lib(True), "pyqt5-tools")
+                if os.path.exists(os.path.join(pyqt5ToolsPath,
+                                               "designer.exe")):
+                    path = pyqt5ToolsPath
+    
+    if not path:
+        # step 3: get the path from Qt
+        # Note: no Qt tools are to be found there for PyQt 5.7.0
+        path = QLibraryInfo.location(QLibraryInfo.BinariesPath)
+        if not os.path.exists(path):
+            path = ""
+    
+    return QDir.toNativeSeparators(path)
+
+
+def translate(*args):
+    """
+    Module function to handle different PyQt 4/5 QCoreApplication.translate
+    parameter.
+    
+    @param args tuple of arguments from QCoreApplication.translate (tuple)
+    @return translated string (string)
+    """
+    if QT_VERSION_STR.startswith('4.'):
+        args = list(args)
+        args.insert(3, QCoreApplication.CodecForTr)
+    return QCoreApplication.translate(*args)
+
+
+###############################################################################
+## functions for version handling
+###############################################################################
+
+
+def versionToTuple(version):
+    """
+    Module function to convert a version string into a tuple.
+    
+    Note: A version string consists of non-negative decimals separated by "."
+    optionally followed by a suffix. Suffix is everything after the last
+    decimal.
+    
+    @param version version string
+    @type str
+    @return version tuple without the suffix
+    @rtype tuple of int
+    """
+    versionParts = []
+    
+    # step 1: extract suffix
+    version = re.split(r"[^\d.]", version)[0]
+    for part in version.split("."):
+        versionParts.append(int(part))
+    
+    return tuple(versionParts)
+
+
+def qVersionTuple():
+    """
+    Module function to get the Qt version as a tuple.
+    
+    @return Qt version as a tuple
+    @rtype tuple of int
+    """
+    return (
+        (QT_VERSION & 0xff0000) >> 16,
+        (QT_VERSION & 0xff00) >> 8,
+        QT_VERSION & 0xff,
+    )
+
+
+###############################################################################
+## functions for extended string handling
+###############################################################################
+
+
+def strGroup(txt, sep, groupLen=4):
+    """
+    Module function to group a string into sub-strings separated by a
+    separator.
+    
+    @param txt text to be grouped
+    @type str
+    @param sep separator string
+    @type str
+    @param groupLen length of each group
+    @type int
+    @return result string
+    @rtype str
+    """
+    groups = []
+    
+    while len(txt) // groupLen != 0:
+        groups.insert(0, txt[-groupLen:])
+        txt = txt[:-groupLen]
+    if len(txt) > 0:
+        groups.insert(0, txt)
+    return sep.join(groups)
+
+
+def strToQByteArray(txt):
+    """
+    Module function to convert a Python string into a QByteArray.
+    
+    @param txt Python string to be converted
+    @type str, bytes, bytearray, unicode
+    @return converted QByteArray
+    @rtype QByteArray
+    """
+    if sys.version_info[0] == 2:
+        if isinstance(txt, unicode):    # __IGNORE_WARNING__
+            txt = txt.encode("utf-8")
+    else:
+        if isinstance(txt, str):
+            txt = txt.encode("utf-8")
+    
+    return QByteArray(txt)
+
+
+def dataString(size):
+    """
+    Module function to generate a formatted size string.
+    
+    @param size size to be formatted
+    @type int
+    @return formatted data string
+    @rtype str
+    """
+    if size < 1024:
+        return QCoreApplication.translate(
+            "Globals", "{0:.1f} Bytes").format(size)
+    elif size < 1024 * 1024:
+        size /= 1024
+        return QCoreApplication.translate(
+            "Globals", "{0:.1f} KiB").format(size)
+    elif size < 1024 * 1024 * 1024:
+        size /= 1024 * 1024
+        return QCoreApplication.translate(
+            "Globals", "{0:.2f} MiB").format(size)
+    else:
+        size /= 1024 * 1024 * 1024
+        return QCoreApplication.translate(
+            "Globals", "{0:.2f} GiB").format(size)
+
+
+###############################################################################
+## functions for converting QSetting return types to valid types
+###############################################################################
+
+
+def toBool(value):
+    """
+    Module function to convert a value to bool.
+    
+    @param value value to be converted
+    @return converted data
+    """
+    if value in ["true", "1", "True"]:
+        return True
+    elif value in ["false", "0", "False"]:
+        return False
+    else:
+        return bool(value)
+
+
+def toList(value):
+    """
+    Module function to convert a value to a list.
+    
+    @param value value to be converted
+    @return converted data
+    """
+    if value is None:
+        return []
+    elif not isinstance(value, list):
+        return [value]
+    else:
+        return value
+
+
+def toByteArray(value):
+    """
+    Module function to convert a value to a byte array.
+    
+    @param value value to be converted
+    @return converted data
+    """
+    if value is None:
+        return QByteArray()
+    else:
+        return value
+
+
+def toDict(value):
+    """
+    Module function to convert a value to a dictionary.
+    
+    @param value value to be converted
+    @return converted data
+    """
+    if value is None:
+        return {}
+    else:
+        return value
+
+
+###############################################################################
+## functions for web browser variant detection
+###############################################################################
+
+
+def getWebBrowserSupport():
+    """
+    Module function to determine the supported web browser variant.
+    
+    @return string indicating the supported web browser variant ("QtWebEngine",
+        "QtWebKit" or "None")
+    @rtype str
+    """
+    from eric6config import getConfig
+    scriptPath = os.path.join(getConfig("ericDir"), "Tools",
+                              "webBrowserSupport.py")
+    proc = QProcess()
+    proc.start(sys.executable, [scriptPath, qVersion()])
+    if proc.waitForFinished(10000):
+        variant = str(proc.readAllStandardOutput(), "utf-8", 'replace').strip()
+    else:
+        variant = "None"
+    return variant
+#
+# eflag: noqa = M801

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