Implemented posix-mode parsing support in shlex.py, as dicussed in
mailing list, and in patch #722686.
This commit is contained in:
parent
84c2b1b9aa
commit
68d8cef89a
|
@ -4,26 +4,16 @@
|
|||
\declaremodule{standard}{shlex}
|
||||
\modulesynopsis{Simple lexical analysis for \UNIX\ shell-like languages.}
|
||||
\moduleauthor{Eric S. Raymond}{esr@snark.thyrsus.com}
|
||||
\moduleauthor{Gustavo Niemeyer}{niemeyer@conectiva.com}
|
||||
\sectionauthor{Eric S. Raymond}{esr@snark.thyrsus.com}
|
||||
\sectionauthor{Gustavo Niemeyer}{niemeyer@conectiva.com}
|
||||
|
||||
\versionadded{1.5.2}
|
||||
|
||||
The \class{shlex} class makes it easy to write lexical analyzers for
|
||||
simple syntaxes resembling that of the \UNIX{} shell. This will often
|
||||
be useful for writing minilanguages, e.g.\ in run control files for
|
||||
Python applications.
|
||||
|
||||
\begin{classdesc}{shlex}{\optional{stream\optional{, file}}}
|
||||
A \class{shlex} instance or subclass instance is a lexical analyzer
|
||||
object. The initialization argument, if present, specifies where to
|
||||
read characters from. It must be a file- or stream-like object with
|
||||
\method{read()} and \method{readline()} methods. If no argument is given,
|
||||
input will be taken from \code{sys.stdin}. The second optional
|
||||
argument is a filename string, which sets the initial value of the
|
||||
\member{infile} member. If the stream argument is omitted or
|
||||
equal to \code{sys.stdin}, this second argument defaults to ``stdin''.
|
||||
\end{classdesc}
|
||||
|
||||
be useful for writing minilanguages, (e.g. in run control files for
|
||||
Python applications) or for parsing quoted strings.
|
||||
|
||||
\begin{seealso}
|
||||
\seemodule{ConfigParser}{Parser for configuration files similar to the
|
||||
|
@ -31,16 +21,50 @@ equal to \code{sys.stdin}, this second argument defaults to ``stdin''.
|
|||
\end{seealso}
|
||||
|
||||
|
||||
\subsection{Module Contents}
|
||||
|
||||
The \module{shlex} module defines the following functions:
|
||||
|
||||
\begin{funcdesc}{split}{s\optional{, posix=\code{True}\optional{,
|
||||
spaces=\code{True}}}}
|
||||
Split the string \var{s} using shell-like syntax. If \code{posix} is
|
||||
\code{True}, operate in posix mode. If \code{spaces} is \code{True}, it
|
||||
will only split words in whitespaces (setting the
|
||||
\member{whitespace_split} member of the \class{shlex} instance).
|
||||
\versionadded{2.3}
|
||||
\end{funcdesc}
|
||||
|
||||
The \module{shlex} module defines the following classes:
|
||||
|
||||
\begin{classdesc}{shlex}{\optional{instream=\code{sys.stdin}\optional{,
|
||||
infile=\code{None}\optional{,
|
||||
posix=\code{False}}}}}
|
||||
A \class{shlex} instance or subclass instance is a lexical analyzer
|
||||
object. The initialization argument, if present, specifies where to
|
||||
read characters from. It must be a file-/stream-like object with
|
||||
\method{read()} and \method{readline()} methods, or a string (strings
|
||||
are accepted since Python 2.3). If no argument is given, input will be
|
||||
taken from \code{sys.stdin}. The second optional argument is a filename
|
||||
string, which sets the initial value of the \member{infile} member. If
|
||||
the \var{instream} argument is omitted or equal to \code{sys.stdin},
|
||||
this second argument defaults to ``stdin''. The \var{posix} argument
|
||||
was introduced in Python 2.3, and defines the operational mode. When
|
||||
\var{posix} is not true (default), the \class{shlex} instance will
|
||||
operate in compatibility mode. When operating in posix mode,
|
||||
\class{shlex} will try to be as close as possible to the posix shell
|
||||
parsing rules. See~\ref{shlex-objects}.
|
||||
\end{classdesc}
|
||||
|
||||
\subsection{shlex Objects \label{shlex-objects}}
|
||||
|
||||
A \class{shlex} instance has the following methods:
|
||||
|
||||
|
||||
\begin{methoddesc}{get_token}{}
|
||||
Return a token. If tokens have been stacked using
|
||||
\method{push_token()}, pop a token off the stack. Otherwise, read one
|
||||
from the input stream. If reading encounters an immediate
|
||||
end-of-file, an empty string is returned.
|
||||
end-of-file, \member{self.eof} is returned (the empty string (\code{""})
|
||||
in non-posix mode, and \code{None} in posix mode).
|
||||
\end{methoddesc}
|
||||
|
||||
\begin{methoddesc}{push_token}{str}
|
||||
|
@ -132,6 +156,12 @@ bounds tokens. By default, includes space, tab, linefeed and
|
|||
carriage-return.
|
||||
\end{memberdesc}
|
||||
|
||||
\begin{memberdesc}{escape}
|
||||
Characters that will be considered as escape. This will be only used
|
||||
in posix mode, and includes just \character{\textbackslash} by default.
|
||||
\versionadded{2.3}
|
||||
\end{memberdesc}
|
||||
|
||||
\begin{memberdesc}{quotes}
|
||||
Characters that will be considered string quotes. The token
|
||||
accumulates until the same quote is encountered again (thus, different
|
||||
|
@ -139,6 +169,20 @@ quote types protect each other as in the shell.) By default, includes
|
|||
\ASCII{} single and double quotes.
|
||||
\end{memberdesc}
|
||||
|
||||
\begin{memberdesc}{escapedquotes}
|
||||
Characters in \member{quotes} that will interpret escape characters
|
||||
defined in \member{escape}. This is only used in posix mode, and includes
|
||||
just \character{"} by default.
|
||||
\versionadded{2.3}
|
||||
\end{memberdesc}
|
||||
|
||||
\begin{memberdesc}{whitespace_split}
|
||||
If true, tokens will only be split in whitespaces. This is useful, for
|
||||
example, for parsing command lines with \class{shlex}, getting tokens
|
||||
in a similar way to shell arguments.
|
||||
\versionadded{2.3}
|
||||
\end{memberdesc}
|
||||
|
||||
\begin{memberdesc}{infile}
|
||||
The name of the current input file, as initially set at class
|
||||
instantiation time or stacked by later source requests. It may
|
||||
|
@ -168,13 +212,6 @@ need to use this, you can read the module source code to learn the
|
|||
details.
|
||||
\end{memberdesc}
|
||||
|
||||
Note that any character not declared to be a word character,
|
||||
whitespace, or a quote will be returned as a single-character token.
|
||||
|
||||
Quote and comment characters are not recognized within words. Thus,
|
||||
the bare words \samp{ain't} and \samp{ain\#t} would be returned as single
|
||||
tokens by the default parser.
|
||||
|
||||
\begin{memberdesc}{lineno}
|
||||
Source line number (count of newlines seen so far plus one).
|
||||
\end{memberdesc}
|
||||
|
@ -183,3 +220,56 @@ Source line number (count of newlines seen so far plus one).
|
|||
The token buffer. It may be useful to examine this when catching
|
||||
exceptions.
|
||||
\end{memberdesc}
|
||||
|
||||
\begin{memberdesc}{eof}
|
||||
Token used to determine end of file. This will be set to the empty
|
||||
string (\code{""}), in non-posix mode, and to \code{None} in posix
|
||||
mode.
|
||||
\versionadded{2.3}
|
||||
\end{memberdesc}
|
||||
|
||||
\subsection{Parsing Rules\label{shlex-parsing-rules}}
|
||||
|
||||
When operating in non-posix mode, \class{shlex} with try to obey to the
|
||||
following rules.
|
||||
|
||||
\begin{itemize}
|
||||
\item Quote characters are not recognized within words
|
||||
(\code{Do"Not"Separate} is parsed as the single word
|
||||
\code{Do"Not"Separate});
|
||||
\item Escape characters are not recognized;
|
||||
\item Enclosing characters in quotes preserve the literal value of
|
||||
all characters within the quotes;
|
||||
\item Closing quotes separate words (\code{"Do"Separate} is parsed
|
||||
as \code{"Do"} and \code{Separate});
|
||||
\item If \member{whitespace_split} is \code{False}, any character not
|
||||
declared to be a word character, whitespace, or a quote will be
|
||||
returned as a single-character token. If it is \code{True},
|
||||
\class{shlex} will only split words in whitespaces;
|
||||
\item EOF is signaled with an empty string (\code{""});
|
||||
\item It's not possible to parse empty strings, even if quoted.
|
||||
\end{itemize}
|
||||
|
||||
When operating in posix mode, \class{shlex} will try to obey to the
|
||||
following parsing rules.
|
||||
|
||||
\begin{itemize}
|
||||
\item Quotes are stripped out, and do not separate words
|
||||
(\code{"Do"Not"Separate"} is parsed as the single word
|
||||
\code{DoNotSeparate});
|
||||
\item Non-quoted escape characters (e.g. \character{\textbackslash})
|
||||
preserve the literal value of the next character that follows;
|
||||
\item Enclosing characters in quotes which are not part of
|
||||
\member{escapedquotes} (e.g. \character{'}) preserve the literal
|
||||
value of all characters within the quotes;
|
||||
\item Enclosing characters in quotes which are part of
|
||||
\member{escapedquotes} (e.g. \character{"}) preserves the literal
|
||||
value of all characters within the quotes, with the exception of
|
||||
the characters mentioned in \member{escape}. The escape characters
|
||||
retain its special meaning only when followed by the quote in use,
|
||||
or the escape character itself. Otherwise the escape character
|
||||
will be considered a normal character.
|
||||
\item EOF is signaled with a \code{None} value;
|
||||
\item Quoted empty strings (\code{""}) are allowed;
|
||||
\end{itemize}
|
||||
|
||||
|
|
116
Lib/shlex.py
116
Lib/shlex.py
|
@ -1,28 +1,51 @@
|
|||
# -*- coding: iso-8859-1 -*-
|
||||
"""A lexical analyzer class for simple shell-like syntaxes."""
|
||||
|
||||
# Module and documentation by Eric S. Raymond, 21 Dec 1998
|
||||
# Input stacking and error message cleanup added by ESR, March 2000
|
||||
# push_source() and pop_source() made explicit by ESR, January 2001.
|
||||
# Posix compliance, split(), string arguments, and
|
||||
# iterator interface by Gustavo Niemeyer, April 2003.
|
||||
|
||||
import os.path
|
||||
import sys
|
||||
|
||||
__all__ = ["shlex"]
|
||||
from types import StringTypes
|
||||
|
||||
try:
|
||||
from cStringIO import StringIO
|
||||
except ImportError:
|
||||
from StringIO import StringIO
|
||||
|
||||
__all__ = ["shlex", "split"]
|
||||
|
||||
class shlex:
|
||||
"A lexical analyzer class for simple shell-like syntaxes."
|
||||
def __init__(self, instream=None, infile=None):
|
||||
def __init__(self, instream=None, infile=None, posix=0):
|
||||
if type(instream) in StringTypes:
|
||||
instream = StringIO(instream)
|
||||
if instream is not None:
|
||||
self.instream = instream
|
||||
self.infile = infile
|
||||
else:
|
||||
self.instream = sys.stdin
|
||||
self.infile = None
|
||||
self.posix = posix
|
||||
if posix:
|
||||
self.eof = None
|
||||
else:
|
||||
self.eof = ''
|
||||
self.commenters = '#'
|
||||
self.wordchars = ('abcdfeghijklmnopqrstuvwxyz'
|
||||
'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_')
|
||||
if self.posix:
|
||||
self.wordchars += ('ßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþÿ'
|
||||
'ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞ')
|
||||
self.whitespace = ' \t\r\n'
|
||||
self.whitespace_split = 0
|
||||
self.quotes = '\'"'
|
||||
self.escape = '\\'
|
||||
self.escapedquotes = '"'
|
||||
self.state = ' '
|
||||
self.pushback = []
|
||||
self.lineno = 1
|
||||
|
@ -42,6 +65,8 @@ class shlex:
|
|||
|
||||
def push_source(self, newstream, newfile=None):
|
||||
"Push an input source onto the lexer's input source stack."
|
||||
if type(newstream) in StringTypes:
|
||||
newstream = StringIO(newstream)
|
||||
self.filestack.insert(0, (self.infile, self.instream, self.lineno))
|
||||
self.infile = newfile
|
||||
self.instream = newstream
|
||||
|
@ -73,6 +98,7 @@ class shlex:
|
|||
# No pushback. Get a token.
|
||||
raw = self.read_token()
|
||||
# Handle inclusions
|
||||
if self.source is not None:
|
||||
while raw == self.source:
|
||||
spec = self.sourcehook(self.read_token())
|
||||
if spec:
|
||||
|
@ -80,22 +106,23 @@ class shlex:
|
|||
self.push_source(newstream, newfile)
|
||||
raw = self.get_token()
|
||||
# Maybe we got EOF instead?
|
||||
while raw == "":
|
||||
while raw == self.eof:
|
||||
if len(self.filestack) == 0:
|
||||
return ""
|
||||
return self.eof
|
||||
else:
|
||||
self.pop_source()
|
||||
raw = self.get_token()
|
||||
# Neither inclusion nor EOF
|
||||
if self.debug >= 1:
|
||||
if raw:
|
||||
if raw != self.eof:
|
||||
print "shlex: token=" + `raw`
|
||||
else:
|
||||
print "shlex: token=EOF"
|
||||
return raw
|
||||
|
||||
def read_token(self):
|
||||
"Read a token from the input stream (no pushback or inclusions)"
|
||||
quoted = 0
|
||||
escapedstate = ' '
|
||||
while 1:
|
||||
nextchar = self.instream.read(1)
|
||||
if nextchar == '\n':
|
||||
|
@ -113,35 +140,65 @@ class shlex:
|
|||
elif nextchar in self.whitespace:
|
||||
if self.debug >= 2:
|
||||
print "shlex: I see whitespace in whitespace state"
|
||||
if self.token:
|
||||
if self.token or (self.posix and quoted):
|
||||
break # emit current token
|
||||
else:
|
||||
continue
|
||||
elif nextchar in self.commenters:
|
||||
self.instream.readline()
|
||||
self.lineno = self.lineno + 1
|
||||
elif self.posix and nextchar in self.escape:
|
||||
escapedstate = 'a'
|
||||
self.state = nextchar
|
||||
elif nextchar in self.wordchars:
|
||||
self.token = nextchar
|
||||
self.state = 'a'
|
||||
elif nextchar in self.quotes:
|
||||
if not self.posix:
|
||||
self.token = nextchar
|
||||
self.state = nextchar
|
||||
elif self.whitespace_split:
|
||||
self.token = nextchar
|
||||
self.state = 'a'
|
||||
else:
|
||||
self.token = nextchar
|
||||
if self.token:
|
||||
if self.token or (self.posix and quoted):
|
||||
break # emit current token
|
||||
else:
|
||||
continue
|
||||
elif self.state in self.quotes:
|
||||
self.token = self.token + nextchar
|
||||
if nextchar == self.state:
|
||||
self.state = ' '
|
||||
break
|
||||
elif not nextchar: # end of file
|
||||
quoted = 1
|
||||
if not nextchar: # end of file
|
||||
if self.debug >= 2:
|
||||
print "shlex: I see EOF in quotes state"
|
||||
# XXX what error should be raised here?
|
||||
raise ValueError, "No closing quotation"
|
||||
if nextchar == self.state:
|
||||
if not self.posix:
|
||||
self.token = self.token + nextchar
|
||||
self.state = ' '
|
||||
break
|
||||
else:
|
||||
self.state = 'a'
|
||||
elif self.posix and nextchar in self.escape and \
|
||||
self.state in self.escapedquotes:
|
||||
escapedstate = self.state
|
||||
self.state = nextchar
|
||||
else:
|
||||
self.token = self.token + nextchar
|
||||
elif self.state in self.escape:
|
||||
if not nextchar: # end of file
|
||||
if self.debug >= 2:
|
||||
print "shlex: I see EOF in escape state"
|
||||
# XXX what error should be raised here?
|
||||
raise ValueError, "No escaped character"
|
||||
# In posix shells, only the quote itself or the escape
|
||||
# character may be escaped within quotes.
|
||||
if escapedstate in self.quotes and \
|
||||
nextchar != self.state and nextchar != escapedstate:
|
||||
self.token = self.token + self.state
|
||||
self.token = self.token + nextchar
|
||||
self.state = escapedstate
|
||||
elif self.state == 'a':
|
||||
if not nextchar:
|
||||
self.state = None # end of file
|
||||
|
@ -150,14 +207,26 @@ class shlex:
|
|||
if self.debug >= 2:
|
||||
print "shlex: I see whitespace in word state"
|
||||
self.state = ' '
|
||||
if self.token:
|
||||
if self.token or (self.posix and quoted):
|
||||
break # emit current token
|
||||
else:
|
||||
continue
|
||||
elif nextchar in self.commenters:
|
||||
self.instream.readline()
|
||||
self.lineno = self.lineno + 1
|
||||
elif nextchar in self.wordchars or nextchar in self.quotes:
|
||||
if self.posix:
|
||||
self.state = ' '
|
||||
if self.token or (self.posix and quoted):
|
||||
break # emit current token
|
||||
else:
|
||||
continue
|
||||
elif self.posix and nextchar in self.quotes:
|
||||
self.state = nextchar
|
||||
elif self.posix and nextchar in self.escape:
|
||||
escapedstate = 'a'
|
||||
self.state = nextchar
|
||||
elif nextchar in self.wordchars or nextchar in self.quotes \
|
||||
or self.whitespace_split:
|
||||
self.token = self.token + nextchar
|
||||
else:
|
||||
self.pushback = [nextchar] + self.pushback
|
||||
|
@ -170,6 +239,8 @@ class shlex:
|
|||
continue
|
||||
result = self.token
|
||||
self.token = ''
|
||||
if self.posix and not quoted and result == '':
|
||||
result = None
|
||||
if self.debug > 1:
|
||||
if result:
|
||||
print "shlex: raw token=" + `result`
|
||||
|
@ -182,7 +253,7 @@ class shlex:
|
|||
if newfile[0] == '"':
|
||||
newfile = newfile[1:-1]
|
||||
# This implements cpp-like semantics for relative-path inclusion.
|
||||
if type(self.infile) == type("") and not os.path.isabs(newfile):
|
||||
if type(self.infile) in StringTypes and not os.path.isabs(newfile):
|
||||
newfile = os.path.join(os.path.dirname(self.infile), newfile)
|
||||
return (newfile, open(newfile, "r"))
|
||||
|
||||
|
@ -194,6 +265,19 @@ class shlex:
|
|||
lineno = self.lineno
|
||||
return "\"%s\", line %d: " % (infile, lineno)
|
||||
|
||||
def __iter__(self):
|
||||
return self
|
||||
|
||||
def next(self):
|
||||
token = self.get_token()
|
||||
if token == self.eof:
|
||||
raise StopIteration
|
||||
return token
|
||||
|
||||
def split(s, posix=1, spaces=1):
|
||||
lex = shlex(s, posix=posix)
|
||||
lex.whitespace_split = spaces
|
||||
return list(lex)
|
||||
|
||||
if __name__ == '__main__':
|
||||
if len(sys.argv) == 1:
|
||||
|
|
|
@ -0,0 +1,191 @@
|
|||
# -*- coding: iso-8859-1 -*-
|
||||
import unittest
|
||||
import os, sys
|
||||
import shlex
|
||||
|
||||
try:
|
||||
from cStringIO import StringIO
|
||||
except ImportError:
|
||||
from StringIO import StringIO
|
||||
|
||||
|
||||
# The original test data set was from shellwords, by Hartmut Goebel.
|
||||
|
||||
data = r"""x|x|
|
||||
foo bar|foo|bar|
|
||||
foo bar|foo|bar|
|
||||
foo bar |foo|bar|
|
||||
foo bar bla fasel|foo|bar|bla|fasel|
|
||||
x y z xxxx|x|y|z|xxxx|
|
||||
\x bar|\|x|bar|
|
||||
\ x bar|\|x|bar|
|
||||
\ bar|\|bar|
|
||||
foo \x bar|foo|\|x|bar|
|
||||
foo \ x bar|foo|\|x|bar|
|
||||
foo \ bar|foo|\|bar|
|
||||
foo "bar" bla|foo|"bar"|bla|
|
||||
"foo" "bar" "bla"|"foo"|"bar"|"bla"|
|
||||
"foo" bar "bla"|"foo"|bar|"bla"|
|
||||
"foo" bar bla|"foo"|bar|bla|
|
||||
foo 'bar' bla|foo|'bar'|bla|
|
||||
'foo' 'bar' 'bla'|'foo'|'bar'|'bla'|
|
||||
'foo' bar 'bla'|'foo'|bar|'bla'|
|
||||
'foo' bar bla|'foo'|bar|bla|
|
||||
blurb foo"bar"bar"fasel" baz|blurb|foo"bar"bar"fasel"|baz|
|
||||
blurb foo'bar'bar'fasel' baz|blurb|foo'bar'bar'fasel'|baz|
|
||||
""|""|
|
||||
''|''|
|
||||
foo "" bar|foo|""|bar|
|
||||
foo '' bar|foo|''|bar|
|
||||
foo "" "" "" bar|foo|""|""|""|bar|
|
||||
foo '' '' '' bar|foo|''|''|''|bar|
|
||||
\""|\|""|
|
||||
"\"|"\"|
|
||||
"foo\ bar"|"foo\ bar"|
|
||||
"foo\\ bar"|"foo\\ bar"|
|
||||
"foo\\ bar\"|"foo\\ bar\"|
|
||||
"foo\\" bar\""|"foo\\"|bar|\|""|
|
||||
"foo\\ bar\" dfadf"|"foo\\ bar\"|dfadf"|
|
||||
"foo\\\ bar\" dfadf"|"foo\\\ bar\"|dfadf"|
|
||||
"foo\\\x bar\" dfadf"|"foo\\\x bar\"|dfadf"|
|
||||
"foo\x bar\" dfadf"|"foo\x bar\"|dfadf"|
|
||||
\''|\|''|
|
||||
'foo\ bar'|'foo\ bar'|
|
||||
'foo\\ bar'|'foo\\ bar'|
|
||||
"foo\\\x bar\" df'a\ 'df'|"foo\\\x bar\"|df'a|\|'df'|
|
||||
\"foo"|\|"foo"|
|
||||
\"foo"\x|\|"foo"|\|x|
|
||||
"foo\x"|"foo\x"|
|
||||
"foo\ "|"foo\ "|
|
||||
foo\ xx|foo|\|xx|
|
||||
foo\ x\x|foo|\|x|\|x|
|
||||
foo\ x\x\""|foo|\|x|\|x|\|""|
|
||||
"foo\ x\x"|"foo\ x\x"|
|
||||
"foo\ x\x\\"|"foo\ x\x\\"|
|
||||
"foo\ x\x\\""foobar"|"foo\ x\x\\"|"foobar"|
|
||||
"foo\ x\x\\"\''"foobar"|"foo\ x\x\\"|\|''|"foobar"|
|
||||
"foo\ x\x\\"\'"fo'obar"|"foo\ x\x\\"|\|'"fo'|obar"|
|
||||
"foo\ x\x\\"\'"fo'obar" 'don'\''t'|"foo\ x\x\\"|\|'"fo'|obar"|'don'|\|''|t'|
|
||||
'foo\ bar'|'foo\ bar'|
|
||||
'foo\\ bar'|'foo\\ bar'|
|
||||
foo\ bar|foo|\|bar|
|
||||
foo#bar\nbaz|foobaz|
|
||||
:-) ;-)|:|-|)|;|-|)|
|
||||
áéíóú|á|é|í|ó|ú|
|
||||
"""
|
||||
|
||||
posix_data = r"""x|x|
|
||||
foo bar|foo|bar|
|
||||
foo bar|foo|bar|
|
||||
foo bar |foo|bar|
|
||||
foo bar bla fasel|foo|bar|bla|fasel|
|
||||
x y z xxxx|x|y|z|xxxx|
|
||||
\x bar|x|bar|
|
||||
\ x bar| x|bar|
|
||||
\ bar| bar|
|
||||
foo \x bar|foo|x|bar|
|
||||
foo \ x bar|foo| x|bar|
|
||||
foo \ bar|foo| bar|
|
||||
foo "bar" bla|foo|bar|bla|
|
||||
"foo" "bar" "bla"|foo|bar|bla|
|
||||
"foo" bar "bla"|foo|bar|bla|
|
||||
"foo" bar bla|foo|bar|bla|
|
||||
foo 'bar' bla|foo|bar|bla|
|
||||
'foo' 'bar' 'bla'|foo|bar|bla|
|
||||
'foo' bar 'bla'|foo|bar|bla|
|
||||
'foo' bar bla|foo|bar|bla|
|
||||
blurb foo"bar"bar"fasel" baz|blurb|foobarbarfasel|baz|
|
||||
blurb foo'bar'bar'fasel' baz|blurb|foobarbarfasel|baz|
|
||||
""||
|
||||
''||
|
||||
foo "" bar|foo||bar|
|
||||
foo '' bar|foo||bar|
|
||||
foo "" "" "" bar|foo||||bar|
|
||||
foo '' '' '' bar|foo||||bar|
|
||||
\"|"|
|
||||
"\""|"|
|
||||
"foo\ bar"|foo\ bar|
|
||||
"foo\\ bar"|foo\ bar|
|
||||
"foo\\ bar\""|foo\ bar"|
|
||||
"foo\\" bar\"|foo\|bar"|
|
||||
"foo\\ bar\" dfadf"|foo\ bar" dfadf|
|
||||
"foo\\\ bar\" dfadf"|foo\\ bar" dfadf|
|
||||
"foo\\\x bar\" dfadf"|foo\\x bar" dfadf|
|
||||
"foo\x bar\" dfadf"|foo\x bar" dfadf|
|
||||
\'|'|
|
||||
'foo\ bar'|foo\ bar|
|
||||
'foo\\ bar'|foo\\ bar|
|
||||
"foo\\\x bar\" df'a\ 'df"|foo\\x bar" df'a\ 'df|
|
||||
\"foo|"foo|
|
||||
\"foo\x|"foox|
|
||||
"foo\x"|foo\x|
|
||||
"foo\ "|foo\ |
|
||||
foo\ xx|foo xx|
|
||||
foo\ x\x|foo xx|
|
||||
foo\ x\x\"|foo xx"|
|
||||
"foo\ x\x"|foo\ x\x|
|
||||
"foo\ x\x\\"|foo\ x\x\|
|
||||
"foo\ x\x\\""foobar"|foo\ x\x\foobar|
|
||||
"foo\ x\x\\"\'"foobar"|foo\ x\x\'foobar|
|
||||
"foo\ x\x\\"\'"fo'obar"|foo\ x\x\'fo'obar|
|
||||
"foo\ x\x\\"\'"fo'obar" 'don'\''t'|foo\ x\x\'fo'obar|don't|
|
||||
"foo\ x\x\\"\'"fo'obar" 'don'\''t' \\|foo\ x\x\'fo'obar|don't|\|
|
||||
'foo\ bar'|foo\ bar|
|
||||
'foo\\ bar'|foo\\ bar|
|
||||
foo\ bar|foo bar|
|
||||
foo#bar\nbaz|foo|baz|
|
||||
:-) ;-)|:-)|;-)|
|
||||
áéíóú|áéíóú|
|
||||
"""
|
||||
|
||||
class ShlexTest(unittest.TestCase):
|
||||
def setUp(self):
|
||||
self.data = [x.split("|")[:-1]
|
||||
for x in data.splitlines()]
|
||||
self.posix_data = [x.split("|")[:-1]
|
||||
for x in posix_data.splitlines()]
|
||||
for item in self.data:
|
||||
item[0] = item[0].replace(r"\n", "\n")
|
||||
for item in self.posix_data:
|
||||
item[0] = item[0].replace(r"\n", "\n")
|
||||
|
||||
def splitTest(self, data, posix, spaces):
|
||||
for i in range(len(data)):
|
||||
l = shlex.split(data[i][0], posix=posix, spaces=spaces)
|
||||
self.assertEqual(l, data[i][1:],
|
||||
"%s: %s != %s" %
|
||||
(data[i][0], l, data[i][1:]))
|
||||
|
||||
def oldSplit(self, s):
|
||||
ret = []
|
||||
lex = shlex.shlex(StringIO(s))
|
||||
tok = lex.get_token()
|
||||
while tok:
|
||||
ret.append(tok)
|
||||
tok = lex.get_token()
|
||||
return ret
|
||||
|
||||
def testSplit(self):
|
||||
"""Test data splitting with non-posix parser"""
|
||||
self.splitTest(self.data, posix=0, spaces=0)
|
||||
|
||||
def testSplitPosix(self):
|
||||
"""Test data splitting with posix parser"""
|
||||
self.splitTest(self.posix_data, posix=1, spaces=1)
|
||||
|
||||
def testCompat(self):
|
||||
"""Test compatibility interface"""
|
||||
for i in range(len(self.data)):
|
||||
l = self.oldSplit(self.data[i][0])
|
||||
self.assertEqual(l, self.data[i][1:],
|
||||
"%s: %s != %s" %
|
||||
(self.data[i][0], l, self.data[i][1:]))
|
||||
|
||||
# Allow this test to be used with old shlex.py
|
||||
if not getattr(shlex, "split", None):
|
||||
for methname in dir(ShlexTest):
|
||||
if methname.startswith("test") and methname != "testCompat":
|
||||
delattr(ShlexTest, methname)
|
||||
|
||||
if __name__ == "__main__":
|
||||
unittest.main()
|
|
@ -155,6 +155,10 @@ Library
|
|||
|
||||
- New csv package makes it easy to read/write CSV files.
|
||||
|
||||
- Module shlex has been extended to allow posix-like shell parsings,
|
||||
including a split() function for easy spliting of quoted strings and
|
||||
commands. An iterator interface was also implemented.
|
||||
|
||||
Tools/Demos
|
||||
-----------
|
||||
|
||||
|
|
Loading…
Reference in New Issue