Converters.py
上传用户:gyjinxi
上传日期:2007-01-04
资源大小:159k
文件大小:6k
- ##############################################################################
- #
- # Zope Public License (ZPL) Version 1.0
- # -------------------------------------
- #
- # Copyright (c) Digital Creations. All rights reserved.
- #
- # This license has been certified as Open Source(tm).
- #
- # Redistribution and use in source and binary forms, with or without
- # modification, are permitted provided that the following conditions are
- # met:
- #
- # 1. Redistributions in source code must retain the above copyright
- # notice, this list of conditions, and the following disclaimer.
- #
- # 2. Redistributions in binary form must reproduce the above copyright
- # notice, this list of conditions, and the following disclaimer in
- # the documentation and/or other materials provided with the
- # distribution.
- #
- # 3. Digital Creations requests that attribution be given to Zope
- # in any manner possible. Zope includes a "Powered by Zope"
- # button that is installed by default. While it is not a license
- # violation to remove this button, it is requested that the
- # attribution remain. A significant investment has been put
- # into Zope, and this effort will continue if the Zope community
- # continues to grow. This is one way to assure that growth.
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- # 4. All advertising materials and documentation mentioning
- # features derived from or use of this software must display
- # the following acknowledgement:
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- # "This product includes software developed by Digital Creations
- # for use in the Z Object Publishing Environment
- # (http://www.zope.org/)."
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- # In the event that the product being advertised includes an
- # intact Zope distribution (with copyright and license included)
- # then this clause is waived.
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- # 5. Names associated with Zope or Digital Creations must not be used to
- # endorse or promote products derived from this software without
- # prior written permission from Digital Creations.
- #
- # 6. Modified redistributions of any form whatsoever must retain
- # the following acknowledgment:
- #
- # "This product includes software developed by Digital Creations
- # for use in the Z Object Publishing Environment
- # (http://www.zope.org/)."
- #
- # Intact (re-)distributions of any official Zope release do not
- # require an external acknowledgement.
- #
- # 7. Modifications are encouraged but must be packaged separately as
- # patches to official Zope releases. Distributions that do not
- # clearly separate the patches from the original work must be clearly
- # labeled as unofficial distributions. Modifications which do not
- # carry the name Zope may be packaged in any form, as long as they
- # conform to all of the clauses above.
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- # Disclaimer
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- # THIS SOFTWARE IS PROVIDED BY DIGITAL CREATIONS ``AS IS'' AND ANY
- # EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DIGITAL CREATIONS OR ITS
- # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- # SUCH DAMAGE.
- #
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- # This software consists of contributions made by Digital Creations and
- # many individuals on behalf of Digital Creations. Specific
- # attributions are listed in the accompanying credits file.
- #
- ##############################################################################
- __version__='$Revision: 1.7 $'[11:-2]
- import regex
- from string import atoi, atol, atof, join, split, strip
- from types import ListType, TupleType
- def field2string(v):
- if hasattr(v,'read'): v=v.read()
- else: v=str(v)
- return v
- def field2text(v, nl=regex.compile('rn|nr').search):
- if hasattr(v,'read'): v=v.read()
- else: v=str(v)
- l=nl(v)
- if l < 0: return v
- r=[]
- s=0
- while l >= s:
- r.append(v[s:l])
- s=l+2
- l=nl(v,s)
- r.append(v[s:])
-
- return join(r,'n')
- def field2required(v):
- if hasattr(v,'read'): v=v.read()
- else: v=str(v)
- if strip(v): return v
- raise ValueError, 'No input for required field<p>'
- def field2int(v):
- if type(v) in (ListType, TupleType):
- return map(field2int, v)
- if hasattr(v,'read'): v=v.read()
- else: v=str(v)
- # we can remove the check for an empty string when we go to python 1.4
- if v: return atoi(v)
- raise ValueError, 'Empty entry when <strong>integer</strong> expected'
- def field2float(v):
- if type(v) in (ListType, TupleType):
- return map(field2float, v)
- if hasattr(v,'read'): v=v.read()
- else: v=str(v)
- # we can remove the check for an empty string when we go to python 1.4
- if v: return atof(v)
- raise ValueError, (
- 'Empty entry when <strong>floating-point number</strong> expected')
- def field2long(v):
- if type(v) in (ListType, TupleType):
- return map(field2long, v)
- if hasattr(v,'read'): v=v.read()
- else: v=str(v)
- # we can remove the check for an empty string when we go to python 1.4
- if v: return atol(v)
- raise ValueError, 'Empty entry when <strong>integer</strong> expected'
- def field2tokens(v):
- if hasattr(v,'read'): v=v.read()
- else: v=str(v)
- return split(v)
- def field2lines(v):
- return split(field2text(v),'n')
- def field2date(v):
- from DateTime import DateTime
- if hasattr(v,'read'): v=v.read()
- else: v=str(v)
- return DateTime(v)
- def field2boolean(v):
- return v
- type_converters = {
- 'float': field2float,
- 'int': field2int,
- 'long': field2long,
- 'string': field2string,
- 'date': field2date,
- 'required': field2required,
- 'tokens': field2tokens,
- 'lines': field2lines,
- 'text': field2text,
- 'boolean': field2boolean,
- }
- get_converter=type_converters.get