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Thu Aug 26 12:33:50 HKT 2004

好东东呀，小新和zoomq看看呀，木头的好东东 :)

On Tue, 24 Aug 2004 23:53:54 +0800, limodou <chatme at 263.net> wrote:
> python-chinese，您好！
> 
> 模板类：模板元素定义改为类对象，支持循环
> 
> #coding=utf-8
> 
> import re
> import sets
> import copy
> import types
> 
> class T:
>         def __init__(self, string):
>                 self.text = string
> 
>         def getText(self):
>                 return self.text
> 
> class Template:
>         def __init__(self, beginchars='<#', endchars='#>'):
>                 self.beginchars = beginchars            #define template var's left delimeter chars
>                 self.endchars = endchars                        #define template var's right delimeter chars
> 
>         def load(self, tplname):
>                 mod = __import__(tplname)
>                 components = tplname.split('.')
>                 for comp in components[1:]:
>                         mod = getattr(mod, comp)
> 
>                 self.vars = {}
>                 self.nodes = {}
>                 for vn in dir(mod):
>                         v = getattr(mod, vn)
>                         if hasattr(v, '__class__') and v.__class__.__name__ == 'T':
>                                 self.vars[vn] = v
>                                 self.nodes[vn] = self._get_rely_on_node(v.getText())
> 
>         #取模板元素的相关集
>         def _get_rely_on_node(self, s): #search for %(name)s format, make a dict
>                 re_node = re.compile(r'%s(\w+)%s' % (self.beginchars, self.endchars))
> 
>                 return list(sets.Set(re_node.findall(s)))
> 
>         #取模板元素的生成顺序
>         def _get_list(self, path, target):
>                 if not self.vars.has_key(target):
>                         return
>                 if target not in path:
>                         path.append(target)
>                 for i in self.nodes[target]:
>                         self._get_list(path, i)
>                 return
> 
>         #生成模板值
>         #values应为字典的字典。即每一个模板元素如果引用有外部的变量，那么在values中应有此模板元素的一个键。
>         #同时它的值应为所有外部变量的一个字典
>         def value(self, target='main', values=None):
>                 path = []
>                 self._get_list(path, target)
>                 path.reverse()
>                 vals = {}
>                 for i in path:
>                         value = self._getElementValue(i, vals, values)
>                         vals[i] = value
>                 return vals[target]
> 
>         def _replace(self, text, values):
>                 def dosup(matchobj, values=values):
>                         if values:
>                                 return values.get(matchobj.groups()[0], matchobj.group())
>                         else:
>                                 return matchobj.group()
>                 #先将所有已经存在的模板元素进行替换
>                 return re.sub(r'%s(\w+)%s' % (self.beginchars, self.endchars), dosup, text)
> 
>         def _getElementValue(self, name, elements, values=None):
>                 text = self.vars[name].getText()
>                 text = self._replace(text, elements)
>                 #再根据外部引用变量的类型决定是否进行循环
>                 if values and values.has_key(name):
>                         if len(values[name]) == 1:      #是字典则只进行一次替换
>                                 text = self._replace(text, values[name])
>                         else:
>                                 s = []
>                                 for v in values[name]:
>                                         s.append(self._replace(text, v))
>                                 text = ''.join(s)
> 
>                 return text
> 
> if __name__ == '__main__':
>         vars = dict(hello=[{'var':'var1'},{'var':'var2'},{'var':'var3'}])
>         template = Template()
>         template.load('tmp2')
>         print template.value('program', vars)
> 
> 测试模板：
> 
> from Template import T
> 
> hello = T("Hello, <#var#> \n")
> message = T("Please input yourname:")
> program = T("""name = input_raw("<#message#>")
> print '''<#hello#>'''
>         """)
> 
> 致
> 礼！
> 
> 
> limodou
> chatme at 263.net
> 2004-08-24
> 
> 
> _______________________________________________
> python-chinese list
> python-chinese at lists.python.cn
> http://python.cn/mailman/listinfo/python-chinese
> 
> 


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标题：Re: [python-chinese] 新的模板类