| 1 | from xml.dom.xmlbuilder import * |
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| 2 | #from xml.dom.ext import PrettyPrint |
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| 3 | from xml.dom import Node |
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| 4 | import xml.dom as dom |
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| 5 | #from |
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| 6 | from StringIO import StringIO |
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| 7 | import re |
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| 8 | import sys |
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| 9 | import os.path |
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| 10 | from objects import * |
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| 11 | from binding import * |
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| 12 | from cd import * |
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| 13 | from exceptions import * |
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| 14 | from omexceptions import * |
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| 15 | def readFile(input_file_name): |
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| 16 | docstream = open(input_file_name) |
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| 17 | docIS=DOMInputSource() |
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| 18 | docIS.byteStream=docstream |
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| 19 | doc= DOMBuilder().parse(docIS) |
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| 20 | docstream.close() |
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| 21 | |
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| 22 | root=doc.lastChild |
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| 23 | return root |
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| 24 | |
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| 25 | def get_text_in_children(n): |
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| 26 | t = "" |
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| 27 | for c in n.childNodes: |
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| 28 | if c.nodeType== Node.TEXT_NODE: |
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| 29 | t += c.nodeValue |
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| 30 | return t |
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| 31 | def remove_white_space(node): |
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| 32 | remove_list=[] |
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| 33 | if node.nodeName=="OMC": |
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| 34 | return |
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| 35 | for child in node.childNodes: |
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| 36 | if child.nodeType==dom.Node.TEXT_NODE and not child.data.strip(): |
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| 37 | remove_list.append(child) |
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| 38 | elif child.hasChildNodes(): |
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| 39 | remove_white_space(child) |
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| 40 | for node in remove_list: |
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| 41 | node.parentNode.removeChild(node) |
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| 42 | node.unlink() |
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| 43 | |
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| 44 | class OMFromXMLBuilder: |
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| 45 | def buildFromNode(self, node): |
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| 46 | erg=None |
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| 47 | if (node.nodeName=="OMI"): |
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| 48 | content=get_text_in_children(node) |
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| 49 | erg=OMint(content) |
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| 50 | if (node.nodeName=="OMV"): |
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| 51 | name=node.getAttribute("name") #node.attributes["name"] |
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| 52 | #print dir(name) |
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| 53 | erg= OMvar(name) |
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| 54 | if (node.nodeName=="OMS"): |
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| 55 | if node.hasAttribute("cdbase"): |
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| 56 | #FIXME: obtain from ancestors |
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| 57 | cdbase=node.getAttribute("cdbase") |
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| 58 | else: |
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| 59 | cdbase=None |
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| 60 | cdname=node.getAttribute("cd") |
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| 61 | name=node.getAttribute("name") |
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| 62 | #print repr(node) |
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| 63 | #print node.attributes |
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| 64 | #print "cdbase", cdbase |
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| 65 | if cdbase==None: |
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| 66 | cd=OMcd(cdname) |
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| 67 | else: |
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| 68 | cd=OMcd(cdname,cdbase) |
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| 69 | erg=OMsymbol(name,cd) |
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| 70 | if (node.nodeName=="OMA"): |
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| 71 | children=[self.buildFromNode(c) for c in node.childNodes] |
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| 72 | erg= OMapplication(children[0],children[1:]) |
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| 73 | if (node.nodeName=="OMBIND"): |
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| 74 | children=[self.buildFromNode(c) for c in node.childNodes] |
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| 75 | erg= OMbinding(children[0],children[1:-1],children[-1]) |
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| 76 | if (node.nodeName=="OMF"): |
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| 77 | if (node.hasAttribute("dec")): |
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| 78 | value=float(node.getAttribute("dec")) |
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| 79 | else: |
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| 80 | raise NotImplementedError |
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| 81 | erg=OMfloat(value) |
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| 82 | if (node.nodeName=="OMR"): |
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| 83 | if node.hasAttribute("xref"): |
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| 84 | erg=OMref(node.getAttribute("xref")) |
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| 85 | self.refs.append(erg) |
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| 86 | else: |
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| 87 | raise UnresolvedReference |
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| 88 | if None==erg: |
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| 89 | raise NotImplementedError |
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| 90 | else: |
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| 91 | if node.hasAttribute("id"): |
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| 92 | id=node.getAttribute("id") |
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| 93 | self.ids[id]=erg |
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| 94 | return erg |
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| 95 | def __init__(self): |
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| 96 | self.refs=[] |
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| 97 | self.ids={} |
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| 98 | def build(self, root): |
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| 99 | remove_white_space(root) |
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| 100 | erg=self.buildFromNode(root) |
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| 101 | for r in self.refs: |
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| 102 | r.ref=self.ids[r.ref] |
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| 103 | return erg |
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| 104 | #TODO: handle hex floats |
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| 105 | #TODO: handle floats |
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| 106 | #TODO: handle ancestors cdbase |
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| 107 | if __name__=='__main__': |
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| 108 | import arith1 |
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| 109 | |
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| 110 | if len(sys.argv)<=2: |
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| 111 | print "Usage: python omxmlreader [--evaluate] input output" |
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| 112 | state=0 |
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| 113 | eval=False |
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| 114 | #TODO: use optparse |
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| 115 | for arg in sys.argv[1:]: |
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| 116 | if state==0: |
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| 117 | if arg=="--evaluate": |
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| 118 | eval=True |
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| 119 | else: |
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| 120 | inputf=arg |
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| 121 | state=1 |
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| 122 | continue |
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| 123 | if state==1: |
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| 124 | outputf=arg |
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| 125 | continue |
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| 126 | if state==2: |
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| 127 | print "argument ignored:", arg |
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| 128 | from context import Context |
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| 129 | #inputf=sys.argv[1] |
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| 130 | root=readFile(inputf) |
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| 131 | builder=OMFromXMLBuilder() |
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| 132 | context=Context() |
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| 133 | context.addCDImplementation(arith1.implementation) |
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| 134 | doc=builder.build(root) |
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| 135 | if eval: |
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| 136 | doc=context.evaluate(doc) |
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| 137 | output=context.XMLEncodeObject(doc) |
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| 138 | try: |
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| 139 | out=open(outputf,"w") |
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| 140 | except NameError: |
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| 141 | print "no output file" |
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| 142 | sys.exit(1) |
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| 143 | out.write(output) |
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| 144 | out.close() |
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| 145 | #print repr(root.getAttribute("blabla")) |
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