Uploaded Test files

venv/Lib/site-packages/IPython/core/splitinput.py

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+# encoding: utf-8
+"""
+Simple utility for splitting user input. This is used by both inputsplitter and
+prefilter.
+
+Authors:
+
+* Brian Granger
+* Fernando Perez
+"""
+
+#-----------------------------------------------------------------------------
+#  Copyright (C) 2008-2011  The IPython Development Team
+#
+#  Distributed under the terms of the BSD License.  The full license is in
+#  the file COPYING, distributed as part of this software.
+#-----------------------------------------------------------------------------
+
+#-----------------------------------------------------------------------------
+# Imports
+#-----------------------------------------------------------------------------
+
+import re
+import sys
+
+from IPython.utils import py3compat
+from IPython.utils.encoding import get_stream_enc
+
+#-----------------------------------------------------------------------------
+# Main function
+#-----------------------------------------------------------------------------
+
+# RegExp for splitting line contents into pre-char//first word-method//rest.
+# For clarity, each group in on one line.
+
+# WARNING: update the regexp if the escapes in interactiveshell are changed, as
+# they are hardwired in.
+
+# Although it's not solely driven by the regex, note that:
+# ,;/% only trigger if they are the first character on the line
+# ! and !! trigger if they are first char(s) *or* follow an indent
+# ? triggers as first or last char.
+
+line_split = re.compile(r"""
+             ^(\s*)               # any leading space
+             ([,;/%]|!!?|\?\??)?  # escape character or characters
+             \s*(%{0,2}[\w\.\*]*)     # function/method, possibly with leading %
+                                  # to correctly treat things like '?%magic'
+             (.*?$|$)             # rest of line
+             """, re.VERBOSE)
+
+
+def split_user_input(line, pattern=None):
+    """Split user input into initial whitespace, escape character, function part
+    and the rest.
+    """
+    # We need to ensure that the rest of this routine deals only with unicode
+    encoding = get_stream_enc(sys.stdin, 'utf-8')
+    line = py3compat.cast_unicode(line, encoding)
+
+    if pattern is None:
+        pattern = line_split
+    match = pattern.match(line)
+    if not match:
+        # print "match failed for line '%s'" % line
+        try:
+            ifun, the_rest = line.split(None,1)
+        except ValueError:
+            # print "split failed for line '%s'" % line
+            ifun, the_rest = line, u''
+        pre = re.match(r'^(\s*)(.*)',line).groups()[0]
+        esc = ""
+    else:
+        pre, esc, ifun, the_rest = match.groups()
+
+    #print 'line:<%s>' % line # dbg
+    #print 'pre <%s> ifun <%s> rest <%s>' % (pre,ifun.strip(),the_rest) # dbg
+    return pre, esc or '', ifun.strip(), the_rest.lstrip()
+
+
+class LineInfo(object):
+    """A single line of input and associated info.
+
+    Includes the following as properties:
+
+    line
+      The original, raw line
+
+    continue_prompt
+      Is this line a continuation in a sequence of multiline input?
+
+    pre
+      Any leading whitespace.
+
+    esc
+      The escape character(s) in pre or the empty string if there isn't one.
+      Note that '!!' and '??' are possible values for esc. Otherwise it will
+      always be a single character.
+
+    ifun
+      The 'function part', which is basically the maximal initial sequence
+      of valid python identifiers and the '.' character. This is what is
+      checked for alias and magic transformations, used for auto-calling,
+      etc. In contrast to Python identifiers, it may start with "%" and contain
+      "*".
+
+    the_rest
+      Everything else on the line.
+    """
+    def __init__(self, line, continue_prompt=False):
+        self.line            = line
+        self.continue_prompt = continue_prompt
+        self.pre, self.esc, self.ifun, self.the_rest = split_user_input(line)
+
+        self.pre_char       = self.pre.strip()
+        if self.pre_char:
+            self.pre_whitespace = '' # No whitespace allowed before esc chars
+        else:
+            self.pre_whitespace = self.pre
+
+    def ofind(self, ip):
+        """Do a full, attribute-walking lookup of the ifun in the various
+        namespaces for the given IPython InteractiveShell instance.
+
+        Return a dict with keys: {found, obj, ospace, ismagic}
+
+        Note: can cause state changes because of calling getattr, but should
+        only be run if autocall is on and if the line hasn't matched any
+        other, less dangerous handlers.
+
+        Does cache the results of the call, so can be called multiple times
+        without worrying about *further* damaging state.
+        """
+        return ip._ofind(self.ifun)
+
+    def __str__(self):
+        return "LineInfo [%s|%s|%s|%s]" %(self.pre, self.esc, self.ifun, self.the_rest)