EVOLUTION-MANAGER

Edit File: paraparser.py

#Copyright ReportLab Europe Ltd. 2000-2004 #see license.txt for license details #history http://www.reportlab.co.uk/cgi-bin/viewcvs.cgi/public/reportlab/trunk/reportlab/platypus/paraparser.py __version__=''' $Id: paraparser.py 3774 2010-09-08 15:11:10Z rgbecker $ ''' __doc__='''The parser used to process markup within paragraphs''' import string import re from types import TupleType, UnicodeType, StringType import sys import os import copy import base64 try: import cPickle as pickle except: import pickle import unicodedata import reportlab.lib.sequencer from reportlab.lib.abag import ABag from reportlab.lib.utils import ImageReader from reportlab.lib import xmllib from reportlab.lib.colors import toColor, white, black, red, Color from reportlab.lib.fonts import tt2ps, ps2tt from reportlab.lib.enums import TA_LEFT, TA_RIGHT, TA_CENTER, TA_JUSTIFY from reportlab.lib.units import inch,mm,cm,pica _re_para = re.compile(r'^\s*<\s*para(?:\s+|>|/>)') sizeDelta = 2 # amount to reduce font size by for super and sub script subFraction = 0.5 # fraction of font size that a sub script should be lowered superFraction = 0.5 # fraction of font size that a super script should be raised DEFAULT_INDEX_NAME='_indexAdd' def _convnum(s, unit=1, allowRelative=True): if s[0] in ('+','-') and allowRelative: try: return ('relative',int(s)*unit) except ValueError: return ('relative',float(s)*unit) else: try: return int(s)*unit except ValueError: return float(s)*unit def _num(s, unit=1, allowRelative=True): """Convert a string like '10cm' to an int or float (in points). The default unit is point, but optionally you can use other default units like mm. """ if s.endswith('cm'): unit=cm s = s[:-2] if s.endswith('in'): unit=inch s = s[:-2] if s.endswith('pt'): unit=1 s = s[:-2] if s.endswith('i'): unit=inch s = s[:-1] if s.endswith('mm'): unit=mm s = s[:-2] if s.endswith('pica'): unit=pica s = s[:-4] return _convnum(s,unit,allowRelative) def _numpct(s,unit=1,allowRelative=False): if s.endswith('%'): return _PCT(_convnum(s[:-1],allowRelative=allowRelative)) else: return _num(s,unit,allowRelative) class _PCT: def __init__(self,v): self._value = v*0.01 def normalizedValue(self,normalizer): normalizer = normalizer or getattr(self,'_normalizer') return normalizer*self._value def _valignpc(s): s = s.lower() if s in ('baseline','sub','super','top','text-top','middle','bottom','text-bottom'): return s if s.endswith('%'): n = _convnum(s[:-1]) if isinstance(n,tuple): n = n[1] return _PCT(n) n = _num(s) if isinstance(n,tuple): n = n[1] return n def _autoLeading(x): x = x.lower() if x in ('','min','max','off'): return x raise ValueError('Invalid autoLeading=%r' % x ) def _align(s): s = string.lower(s) if s=='left': return TA_LEFT elif s=='right': return TA_RIGHT elif s=='justify': return TA_JUSTIFY elif s in ('centre','center'): return TA_CENTER else: raise ValueError _paraAttrMap = {'font': ('fontName', None), 'face': ('fontName', None), 'fontsize': ('fontSize', _num), 'size': ('fontSize', _num), 'leading': ('leading', _num), 'autoleading': ('autoLeading', _autoLeading), 'lindent': ('leftIndent', _num), 'rindent': ('rightIndent', _num), 'findent': ('firstLineIndent', _num), 'align': ('alignment', _align), 'spaceb': ('spaceBefore', _num), 'spacea': ('spaceAfter', _num), 'bfont': ('bulletFontName', None), 'bfontsize': ('bulletFontSize',_num), 'boffsety': ('bulletOffsetY',_num), 'bindent': ('bulletIndent',_num), 'bcolor': ('bulletColor',toColor), 'color':('textColor',toColor), 'backcolor':('backColor',toColor), 'bgcolor':('backColor',toColor), 'bg':('backColor',toColor), 'fg': ('textColor',toColor), } _bulletAttrMap = { 'font': ('bulletFontName', None), 'face': ('bulletFontName', None), 'size': ('bulletFontSize',_num), 'fontsize': ('bulletFontSize',_num), 'offsety': ('bulletOffsetY',_num), 'indent': ('bulletIndent',_num), 'color': ('bulletColor',toColor), 'fg': ('bulletColor',toColor), } #things which are valid font attributes _fontAttrMap = {'size': ('fontSize', _num), 'face': ('fontName', None), 'name': ('fontName', None), 'fg': ('textColor', toColor), 'color':('textColor', toColor), 'backcolor':('backColor',toColor), 'bgcolor':('backColor',toColor), } #things which are valid font attributes _linkAttrMap = {'size': ('fontSize', _num), 'face': ('fontName', None), 'name': ('fontName', None), 'fg': ('textColor', toColor), 'color':('textColor', toColor), 'backcolor':('backColor',toColor), 'bgcolor':('backColor',toColor), 'dest': ('link', None), 'destination': ('link', None), 'target': ('link', None), 'href': ('link', None), } _anchorAttrMap = {'fontSize': ('fontSize', _num), 'fontName': ('fontName', None), 'name': ('name', None), 'fg': ('textColor', toColor), 'color':('textColor', toColor), 'backcolor':('backColor',toColor), 'bgcolor':('backColor',toColor), 'href': ('href', None), } _imgAttrMap = { 'src': ('src', None), 'width': ('width',_numpct), 'height':('height',_numpct), 'valign':('valign',_valignpc), } _indexAttrMap = { 'name': ('name',None), 'item': ('item',None), 'offset': ('offset',None), 'format': ('format',None), } def _addAttributeNames(m): K = m.keys() for k in K: n = m[k][0] if n not in m: m[n] = m[k] n = string.lower(n) if n not in m: m[n] = m[k] _addAttributeNames(_paraAttrMap) _addAttributeNames(_fontAttrMap) _addAttributeNames(_bulletAttrMap) _addAttributeNames(_anchorAttrMap) _addAttributeNames(_linkAttrMap) def _applyAttributes(obj, attr): for k, v in attr.items(): if type(v) is TupleType and v[0]=='relative': #AR 20/5/2000 - remove 1.5.2-ism #v = v[1]+getattr(obj,k,0) if hasattr(obj, k): v = v[1]+getattr(obj,k) else: v = v[1] setattr(obj,k,v) #Named character entities intended to be supported from the special font #with additions suggested by Christoph Zwerschke who also suggested the #numeric entity names that follow. greeks = { 'Aacute': '\xc3\x81', 'aacute': '\xc3\xa1', 'Acirc': '\xc3\x82', 'acirc': '\xc3\xa2', 'acute': '\xc2\xb4', 'AElig': '\xc3\x86', 'aelig': '\xc3\xa6', 'Agrave': '\xc3\x80', 'agrave': '\xc3\xa0', 'alefsym': '\xe2\x84\xb5', 'Alpha': '\xce\x91', 'alpha': '\xce\xb1', 'and': '\xe2\x88\xa7', 'ang': '\xe2\x88\xa0', 'Aring': '\xc3\x85', 'aring': '\xc3\xa5', 'asymp': '\xe2\x89\x88', 'Atilde': '\xc3\x83', 'atilde': '\xc3\xa3', 'Auml': '\xc3\x84', 'auml': '\xc3\xa4', 'bdquo': '\xe2\x80\x9e', 'Beta': '\xce\x92', 'beta': '\xce\xb2', 'brvbar': '\xc2\xa6', 'bull': '\xe2\x80\xa2', 'cap': '\xe2\x88\xa9', 'Ccedil': '\xc3\x87', 'ccedil': '\xc3\xa7', 'cedil': '\xc2\xb8', 'cent': '\xc2\xa2', 'Chi': '\xce\xa7', 'chi': '\xcf\x87', 'circ': '\xcb\x86', 'clubs': '\xe2\x99\xa3', 'cong': '\xe2\x89\x85', 'copy': '\xc2\xa9', 'crarr': '\xe2\x86\xb5', 'cup': '\xe2\x88\xaa', 'curren': '\xc2\xa4', 'dagger': '\xe2\x80\xa0', 'Dagger': '\xe2\x80\xa1', 'darr': '\xe2\x86\x93', 'dArr': '\xe2\x87\x93', 'deg': '\xc2\xb0', 'delta': '\xce\xb4', 'Delta': '\xe2\x88\x86', 'diams': '\xe2\x99\xa6', 'divide': '\xc3\xb7', 'Eacute': '\xc3\x89', 'eacute': '\xc3\xa9', 'Ecirc': '\xc3\x8a', 'ecirc': '\xc3\xaa', 'Egrave': '\xc3\x88', 'egrave': '\xc3\xa8', 'empty': '\xe2\x88\x85', 'emsp': '\xe2\x80\x83', 'ensp': '\xe2\x80\x82', 'Epsilon': '\xce\x95', 'epsilon': '\xce\xb5', 'epsiv': '\xce\xb5', 'equiv': '\xe2\x89\xa1', 'Eta': '\xce\x97', 'eta': '\xce\xb7', 'ETH': '\xc3\x90', 'eth': '\xc3\xb0', 'Euml': '\xc3\x8b', 'euml': '\xc3\xab', 'euro': '\xe2\x82\xac', 'exist': '\xe2\x88\x83', 'fnof': '\xc6\x92', 'forall': '\xe2\x88\x80', 'frac12': '\xc2\xbd', 'frac14': '\xc2\xbc', 'frac34': '\xc2\xbe', 'frasl': '\xe2\x81\x84', 'Gamma': '\xce\x93', 'gamma': '\xce\xb3', 'ge': '\xe2\x89\xa5', 'harr': '\xe2\x86\x94', 'hArr': '\xe2\x87\x94', 'hearts': '\xe2\x99\xa5', 'hellip': '\xe2\x80\xa6', 'Iacute': '\xc3\x8d', 'iacute': '\xc3\xad', 'Icirc': '\xc3\x8e', 'icirc': '\xc3\xae', 'iexcl': '\xc2\xa1', 'Igrave': '\xc3\x8c', 'igrave': '\xc3\xac', 'image': '\xe2\x84\x91', 'infin': '\xe2\x88\x9e', 'int': '\xe2\x88\xab', 'Iota': '\xce\x99', 'iota': '\xce\xb9', 'iquest': '\xc2\xbf', 'isin': '\xe2\x88\x88', 'Iuml': '\xc3\x8f', 'iuml': '\xc3\xaf', 'Kappa': '\xce\x9a', 'kappa': '\xce\xba', 'Lambda': '\xce\x9b', 'lambda': '\xce\xbb', 'lang': '\xe2\x8c\xa9', 'laquo': '\xc2\xab', 'larr': '\xe2\x86\x90', 'lArr': '\xe2\x87\x90', 'lceil': '\xef\xa3\xae', 'ldquo': '\xe2\x80\x9c', 'le': '\xe2\x89\xa4', 'lfloor': '\xef\xa3\xb0', 'lowast': '\xe2\x88\x97', 'loz': '\xe2\x97\x8a', 'lrm': '\xe2\x80\x8e', 'lsaquo': '\xe2\x80\xb9', 'lsquo': '\xe2\x80\x98', 'macr': '\xc2\xaf', 'mdash': '\xe2\x80\x94', 'micro': '\xc2\xb5', 'middot': '\xc2\xb7', 'minus': '\xe2\x88\x92', 'mu': '\xc2\xb5', 'Mu': '\xce\x9c', 'nabla': '\xe2\x88\x87', 'nbsp': '\xc2\xa0', 'ndash': '\xe2\x80\x93', 'ne': '\xe2\x89\xa0', 'ni': '\xe2\x88\x8b', 'notin': '\xe2\x88\x89', 'not': '\xc2\xac', 'nsub': '\xe2\x8a\x84', 'Ntilde': '\xc3\x91', 'ntilde': '\xc3\xb1', 'Nu': '\xce\x9d', 'nu': '\xce\xbd', 'Oacute': '\xc3\x93', 'oacute': '\xc3\xb3', 'Ocirc': '\xc3\x94', 'ocirc': '\xc3\xb4', 'OElig': '\xc5\x92', 'oelig': '\xc5\x93', 'Ograve': '\xc3\x92', 'ograve': '\xc3\xb2', 'oline': '\xef\xa3\xa5', 'omega': '\xcf\x89', 'Omega': '\xe2\x84\xa6', 'Omicron': '\xce\x9f', 'omicron': '\xce\xbf', 'oplus': '\xe2\x8a\x95', 'ordf': '\xc2\xaa', 'ordm': '\xc2\xba', 'or': '\xe2\x88\xa8', 'Oslash': '\xc3\x98', 'oslash': '\xc3\xb8', 'Otilde': '\xc3\x95', 'otilde': '\xc3\xb5', 'otimes': '\xe2\x8a\x97', 'Ouml': '\xc3\x96', 'ouml': '\xc3\xb6', 'para': '\xc2\xb6', 'part': '\xe2\x88\x82', 'permil': '\xe2\x80\xb0', 'perp': '\xe2\x8a\xa5', 'phis': '\xcf\x86', 'Phi': '\xce\xa6', 'phi': '\xcf\x95', 'piv': '\xcf\x96', 'Pi': '\xce\xa0', 'pi': '\xcf\x80', 'plusmn': '\xc2\xb1', 'pound': '\xc2\xa3', 'prime': '\xe2\x80\xb2', 'Prime': '\xe2\x80\xb3', 'prod': '\xe2\x88\x8f', 'prop': '\xe2\x88\x9d', 'Psi': '\xce\xa8', 'psi': '\xcf\x88', 'radic': '\xe2\x88\x9a', 'rang': '\xe2\x8c\xaa', 'raquo': '\xc2\xbb', 'rarr': '\xe2\x86\x92', 'rArr': '\xe2\x87\x92', 'rceil': '\xef\xa3\xb9', 'rdquo': '\xe2\x80\x9d', 'real': '\xe2\x84\x9c', 'reg': '\xc2\xae', 'rfloor': '\xef\xa3\xbb', 'Rho': '\xce\xa1', 'rho': '\xcf\x81', 'rlm': '\xe2\x80\x8f', 'rsaquo': '\xe2\x80\xba', 'rsquo': '\xe2\x80\x99', 'sbquo': '\xe2\x80\x9a', 'Scaron': '\xc5\xa0', 'scaron': '\xc5\xa1', 'sdot': '\xe2\x8b\x85', 'sect': '\xc2\xa7', 'shy': '\xc2\xad', 'sigmaf': '\xcf\x82', 'sigmav': '\xcf\x82', 'Sigma': '\xce\xa3', 'sigma': '\xcf\x83', 'sim': '\xe2\x88\xbc', 'spades': '\xe2\x99\xa0', 'sube': '\xe2\x8a\x86', 'sub': '\xe2\x8a\x82', 'sum': '\xe2\x88\x91', 'sup1': '\xc2\xb9', 'sup2': '\xc2\xb2', 'sup3': '\xc2\xb3', 'supe': '\xe2\x8a\x87', 'sup': '\xe2\x8a\x83', 'szlig': '\xc3\x9f', 'Tau': '\xce\xa4', 'tau': '\xcf\x84', 'there4': '\xe2\x88\xb4', 'thetasym': '\xcf\x91', 'thetav': '\xcf\x91', 'Theta': '\xce\x98', 'theta': '\xce\xb8', 'thinsp': '\xe2\x80\x89', 'THORN': '\xc3\x9e', 'thorn': '\xc3\xbe', 'tilde': '\xcb\x9c', 'times': '\xc3\x97', 'trade': '\xef\xa3\xaa', 'Uacute': '\xc3\x9a', 'uacute': '\xc3\xba', 'uarr': '\xe2\x86\x91', 'uArr': '\xe2\x87\x91', 'Ucirc': '\xc3\x9b', 'ucirc': '\xc3\xbb', 'Ugrave': '\xc3\x99', 'ugrave': '\xc3\xb9', 'uml': '\xc2\xa8', 'upsih': '\xcf\x92', 'Upsilon': '\xce\xa5', 'upsilon': '\xcf\x85', 'Uuml': '\xc3\x9c', 'uuml': '\xc3\xbc', 'weierp': '\xe2\x84\x98', 'Xi': '\xce\x9e', 'xi': '\xce\xbe', 'Yacute': '\xc3\x9d', 'yacute': '\xc3\xbd', 'yen': '\xc2\xa5', 'yuml': '\xc3\xbf', 'Yuml': '\xc5\xb8', 'Zeta': '\xce\x96', 'zeta': '\xce\xb6', 'zwj': '\xe2\x80\x8d', 'zwnj': '\xe2\x80\x8c', } #------------------------------------------------------------------------ class ParaFrag(ABag): """class ParaFrag contains the intermediate representation of string segments as they are being parsed by the XMLParser. fontname, fontSize, rise, textColor, cbDefn """ _greek2Utf8=None def _greekConvert(data): global _greek2Utf8 if not _greek2Utf8: from reportlab.pdfbase.rl_codecs import RL_Codecs import codecs dm = decoding_map = codecs.make_identity_dict(xrange(32,256)) for k in xrange(0,32): dm[k] = None dm.update(RL_Codecs._RL_Codecs__rl_codecs_data['symbol'][0]) _greek2Utf8 = {} for k,v in dm.iteritems(): if not v: u = '\0' else: u = unichr(v).encode('utf8') _greek2Utf8[chr(k)] = u return ''.join(map(_greek2Utf8.__getitem__,data)) #------------------------------------------------------------------ # !!! NOTE !!! THIS TEXT IS NOW REPLICATED IN PARAGRAPH.PY !!! # The ParaFormatter will be able to format the following # tags: # < /b > - bold # < /i > - italics # < u > < /u > - underline # < strike > < /strike > - strike through # < super > < /super > - superscript # < sup > < /sup > - superscript # < sub > < /sub > - subscript # <font name=fontfamily/fontname color=colorname size=float> # < bullet > </bullet> - bullet text (at head of para only) # <onDraw name=callable label="a label"/> # <index [name="callablecanvasattribute"] label="a label"/> # <link>link text</link> # attributes of links # size/fontSize=num # name/face/fontName=name # fg/textColor/color=color # backcolor/backColor/bgcolor=color # dest/destination/target/href/link=target # <a>anchor text</a> # attributes of anchors # fontSize=num # fontName=name # fg/textColor/color=color # backcolor/backColor/bgcolor=color # href=href # <a name="anchorpoint"/> # <unichar name="unicode character name"/> # <unichar value="unicode code point"/> # <img src="path" width="1in" height="1in" valign="bottom"/> # width="w%" --> fontSize*w/100 idea from Roberto Alsina # height="h%" --> linewidth*h/100 <ralsina@netmanagers.com.ar> # <greek> - </greek> # # The whole may be surrounded by <para> </para> tags # # It will also be able to handle any MathML specified Greek characters. #------------------------------------------------------------------ class ParaParser(xmllib.XMLParser): #---------------------------------------------------------- # First we will define all of the xml tag handler functions. # # start_<tag>(attributes) # end_<tag>() # # While parsing the xml ParaFormatter will call these # functions to handle the string formatting tags. # At the start of each tag the corresponding field will # be set to 1 and at the end tag the corresponding field will # be set to 0. Then when handle_data is called the options # for that data will be aparent by the current settings. #---------------------------------------------------------- def __getattr__( self, attrName ): """This way we can handle <TAG> the same way as <tag> (ignoring case).""" if attrName!=attrName.lower() and attrName!="caseSensitive" and not self.caseSensitive and \ (attrName.startswith("start_") or attrName.startswith("end_")): return getattr(self,attrName.lower()) raise AttributeError, attrName #### bold def start_b( self, attributes ): self._push(bold=1) def end_b( self ): self._pop(bold=1) def start_strong( self, attributes ): self._push(bold=1) def end_strong( self ): self._pop(bold=1) #### italics def start_i( self, attributes ): self._push(italic=1) def end_i( self ): self._pop(italic=1) def start_em( self, attributes ): self._push(italic=1) def end_em( self ): self._pop(italic=1) #### underline def start_u( self, attributes ): self._push(underline=1) def end_u( self ): self._pop(underline=1) #### strike def start_strike( self, attributes ): self._push(strike=1) def end_strike( self ): self._pop(strike=1) #### link def start_link(self, attributes): self._push(**self.getAttributes(attributes,_linkAttrMap)) def end_link(self): frag = self._stack[-1] del self._stack[-1] assert frag.link!=None #### anchor def start_a(self, attributes): A = self.getAttributes(attributes,_anchorAttrMap) name = A.get('name',None) if name is not None: name = name.strip() if not name: self._syntax_error('<a name="..."/> anchor variant requires non-blank name') if len(A)>1: self._syntax_error('<a name="..."/> anchor variant only allows name attribute') A = dict(name=A['name']) A['_selfClosingTag'] = 'anchor' else: href = A.get('href','').strip() if not href: self._syntax_error('<a> tag must have non-blank name or href attribute') A['link'] = href #convert to our link form A.pop('href') self._push(**A) def end_a(self): frag = self._stack[-1] sct = getattr(frag,'_selfClosingTag','') if sct: assert sct=='anchor' and frag.name,'Parser failure in <a/>' defn = frag.cbDefn = ABag() defn.label = defn.kind = 'anchor' defn.name = frag.name del frag.name, frag._selfClosingTag self.handle_data('') self._pop() else: del self._stack[-1] assert frag.link!=None def start_img(self,attributes): A = self.getAttributes(attributes,_imgAttrMap) if not A.get('src'): self._syntax_error('<img> needs src attribute') A['_selfClosingTag'] = 'img' self._push(**A) def end_img(self): frag = self._stack[-1] assert getattr(frag,'_selfClosingTag',''),'Parser failure in <img/>' defn = frag.cbDefn = ABag() defn.kind = 'img' defn.src = getattr(frag,'src',None) defn.image = ImageReader(defn.src) size = defn.image.getSize() defn.width = getattr(frag,'width',size[0]) defn.height = getattr(frag,'height',size[1]) defn.valign = getattr(frag,'valign','bottom') del frag._selfClosingTag self.handle_data('') self._pop() #### super script def start_super( self, attributes ): self._push(super=1) def end_super( self ): self._pop(super=1) start_sup = start_super end_sup = end_super #### sub script def start_sub( self, attributes ): self._push(sub=1) def end_sub( self ): self._pop(sub=1) #### greek script #### add symbol encoding def handle_charref(self, name): try: if name[0]=='x': n = int(name[1:],16) else: n = int(name) except ValueError: self.unknown_charref(name) return self.handle_data(unichr(n).encode('utf8')) def handle_entityref(self,name): if name in greeks: self.handle_data(greeks[name]) else: xmllib.XMLParser.handle_entityref(self,name) def syntax_error(self,lineno,message): self._syntax_error(message) def _syntax_error(self,message): if message[:10]=="attribute " and message[-17:]==" value not quoted": return self.errors.append(message) def start_greek(self, attr): self._push(greek=1) def end_greek(self): self._pop(greek=1) def start_unichar(self, attr): if 'name' in attr: if 'code' in attr: self._syntax_error('<unichar/> invalid with both name and code attributes') try: v = unicodedata.lookup(attr['name']).encode('utf8') except KeyError: self._syntax_error('<unichar/> invalid name attribute\n"%s"' % name) v = '\0' elif 'code' in attr: try: v = unichr(int(eval(attr['code']))).encode('utf8') except: self._syntax_error('<unichar/> invalid code attribute %s' % attr['code']) v = '\0' else: v = None if attr: self._syntax_error('<unichar/> invalid attribute %s' % attr.keys()[0]) if v is not None: self.handle_data(v) self._push(_selfClosingTag='unichar') def end_unichar(self): self._pop() def start_font(self,attr): self._push(**self.getAttributes(attr,_fontAttrMap)) def end_font(self): self._pop() def start_br(self, attr): #just do the trick to make sure there is no content self._push(_selfClosingTag='br',lineBreak=True,text='') def end_br(self): frag = self._stack[-1] assert frag._selfClosingTag=='br' and frag.lineBreak,'Parser failure in <br/>' del frag._selfClosingTag self.handle_data('') self._pop() def _initial_frag(self,attr,attrMap,bullet=0): style = self._style if attr!={}: style = copy.deepcopy(style) _applyAttributes(style,self.getAttributes(attr,attrMap)) self._style = style # initialize semantic values frag = ParaFrag() frag.sub = 0 frag.super = 0 frag.rise = 0 frag.underline = 0 frag.strike = 0 frag.greek = 0 frag.link = None if bullet: frag.fontName, frag.bold, frag.italic = ps2tt(style.bulletFontName) frag.fontSize = style.bulletFontSize frag.textColor = hasattr(style,'bulletColor') and style.bulletColor or style.textColor else: frag.fontName, frag.bold, frag.italic = ps2tt(style.fontName) frag.fontSize = style.fontSize frag.textColor = style.textColor return frag def start_para(self,attr): self._stack = [self._initial_frag(attr,_paraAttrMap)] def end_para(self): self._pop() def start_bullet(self,attr): if hasattr(self,'bFragList'): self._syntax_error('only one <bullet> tag allowed') self.bFragList = [] frag = self._initial_frag(attr,_bulletAttrMap,1) frag.isBullet = 1 self._stack.append(frag) def end_bullet(self): self._pop() #--------------------------------------------------------------- def start_seqdefault(self, attr): try: default = attr['id'] except KeyError: default = None self._seq.setDefaultCounter(default) def end_seqdefault(self): pass def start_seqreset(self, attr): try: id = attr['id'] except KeyError: id = None try: base = int(attr['base']) except: base=0 self._seq.reset(id, base) def end_seqreset(self): pass def start_seqchain(self, attr): try: order = attr['order'] except KeyError: order = '' order = order.split() seq = self._seq for p,c in zip(order[:-1],order[1:]): seq.chain(p, c) end_seqchain = end_seqreset def start_seqformat(self, attr): try: id = attr['id'] except KeyError: id = None try: value = attr['value'] except KeyError: value = '1' self._seq.setFormat(id,value) end_seqformat = end_seqreset # AR hacking in aliases to allow the proper casing for RML. # the above ones should be deprecated over time. 2001-03-22 start_seqDefault = start_seqdefault end_seqDefault = end_seqdefault start_seqReset = start_seqreset end_seqReset = end_seqreset start_seqChain = start_seqchain end_seqChain = end_seqchain start_seqFormat = start_seqformat end_seqFormat = end_seqformat def start_seq(self, attr): #if it has a template, use that; otherwise try for id; #otherwise take default sequence if 'template' in attr: templ = attr['template'] self.handle_data(templ % self._seq) return elif 'id' in attr: id = attr['id'] else: id = None increment = attr.get('inc', None) if not increment: output = self._seq.nextf(id) else: #accepts "no" for do not increment, or an integer. #thus, 0 and 1 increment by the right amounts. if increment.lower() == 'no': output = self._seq.thisf(id) else: incr = int(increment) output = self._seq.thisf(id) self._seq.reset(id, self._seq._this() + incr) self.handle_data(output) def end_seq(self): pass def start_onDraw(self,attr): defn = ABag() if 'name' in attr: defn.name = attr['name'] else: self._syntax_error('<onDraw> needs at least a name attribute') if 'label' in attr: defn.label = attr['label'] defn.kind='onDraw' self._push(cbDefn=defn) self.handle_data('') self._pop() end_onDraw=end_seq def start_index(self,attr): attr=self.getAttributes(attr,_indexAttrMap) defn = ABag() if 'item' in attr: label = attr['item'] else: self._syntax_error('<index> needs at least an item attribute') if 'name' in attr: name = attr['name'] else: name = DEFAULT_INDEX_NAME format = attr.get('format',None) if format is not None and format not in ('123','I','i','ABC','abc'): raise ValueError('index tag format is %r not valid 123 I i ABC or abc' % offset) offset = attr.get('offset',None) if offset is not None: try: offset = int(offset) except: raise ValueError('index tag offset is %r not an int' % offset) defn.label = base64.encodestring(pickle.dumps((label,format,offset))).strip() defn.name = name defn.kind='index' self._push(cbDefn=defn) self.handle_data('') self._pop() end_index=end_seq #--------------------------------------------------------------- def _push(self,**attr): frag = copy.copy(self._stack[-1]) _applyAttributes(frag,attr) self._stack.append(frag) def _pop(self,**kw): frag = self._stack[-1] del self._stack[-1] for k, v in kw.items(): assert getattr(frag,k)==v return frag def getAttributes(self,attr,attrMap): A = {} for k, v in attr.items(): if not self.caseSensitive: k = string.lower(k) if k in attrMap.keys(): j = attrMap[k] func = j[1] try: A[j[0]] = (func is None) and v or func(v) except: self._syntax_error('%s: invalid value %s'%(k,v)) else: self._syntax_error('invalid attribute name %s'%k) return A #---------------------------------------------------------------- def __init__(self,verbose=0): self.caseSensitive = 0 xmllib.XMLParser.__init__(self,verbose=verbose) def _iReset(self): self.fragList = [] if hasattr(self, 'bFragList'): delattr(self,'bFragList') def _reset(self, style): '''reset the parser''' xmllib.XMLParser.reset(self) # initialize list of string segments to empty self.errors = [] self._style = style self._iReset() #---------------------------------------------------------------- def handle_data(self,data): "Creates an intermediate representation of string segments." frag = copy.copy(self._stack[-1]) if hasattr(frag,'cbDefn'): kind = frag.cbDefn.kind if data: self._syntax_error('Only empty <%s> tag allowed' % kind) elif hasattr(frag,'_selfClosingTag'): if data!='': self._syntax_error('No content allowed in %s tag' % frag._selfClosingTag) return else: # if sub and super are both on they will cancel each other out if frag.sub == 1 and frag.super == 1: frag.sub = 0 frag.super = 0 if frag.sub: frag.rise = -frag.fontSize*subFraction frag.fontSize = max(frag.fontSize-sizeDelta,3) elif frag.super: frag.rise = frag.fontSize*superFraction frag.fontSize = max(frag.fontSize-sizeDelta,3) if frag.greek: frag.fontName = 'symbol' data = _greekConvert(data) # bold, italic, and underline frag.fontName = tt2ps(frag.fontName,frag.bold,frag.italic) #save our data frag.text = data if hasattr(frag,'isBullet'): delattr(frag,'isBullet') self.bFragList.append(frag) else: self.fragList.append(frag) def handle_cdata(self,data): self.handle_data(data) def _setup_for_parse(self,style): self._seq = reportlab.lib.sequencer.getSequencer() self._reset(style) # reinitialise the parser def parse(self, text, style): """Given a formatted string will return a list of ParaFrag objects with their calculated widths. If errors occur None will be returned and the self.errors holds a list of the error messages. """ # AR 20040612 - when we feed Unicode strings in, sgmlop # tries to coerce to ASCII. Must intercept, coerce to # any 8-bit encoding which defines most of 256 points, # and revert at end. Yuk. Preliminary step prior to # removal of parser altogether. enc = self._enc = 'utf8' #our legacy default self._UNI = type(text) is UnicodeType if self._UNI: text = text.encode(enc) self._setup_for_parse(style) # the xmlparser requires that all text be surrounded by xml # tags, therefore we must throw some unused flags around the # given string if not(len(text)>=6 and text[0]=='<' and _re_para.match(text)): text = "<para>"+text+"</para>" self.feed(text) self.close() # force parsing to complete return self._complete_parse() def _complete_parse(self): del self._seq style = self._style del self._style if len(self.errors)==0: fragList = self.fragList bFragList = hasattr(self,'bFragList') and self.bFragList or None self._iReset() else: fragList = bFragList = None if self._UNI: #reconvert to unicode if fragList: for frag in fragList: frag.text = unicode(frag.text, self._enc) if bFragList: for frag in bFragList: frag.text = unicode(frag.text, self._enc) return style, fragList, bFragList def _tt_parse(self,tt): tag = tt[0] try: start = getattr(self,'start_'+tag) end = getattr(self,'end_'+tag) except AttributeError: raise ValueError('Invalid tag "%s"' % tag) start(tt[1] or {}) C = tt[2] if C: M = self._tt_handlers for c in C: M[type(c) is TupleType](c) end() def tt_parse(self,tt,style): '''parse from tupletree form''' self._setup_for_parse(style) self._tt_handlers = self.handle_data,self._tt_parse self._tt_parse(tt) return self._complete_parse() if __name__=='__main__': from reportlab.platypus import cleanBlockQuotedText from reportlab.lib.styles import _baseFontName _parser=ParaParser() def check_text(text,p=_parser): print '##########' text = cleanBlockQuotedText(text) l,rv,bv = p.parse(text,style) if rv is None: for l in _parser.errors: print l else: print 'ParaStyle', l.fontName,l.fontSize,l.textColor for l in rv: print l.fontName,l.fontSize,l.textColor,l.bold, l.rise, '|%s|'%l.text[:25], if hasattr(l,'cbDefn'): print 'cbDefn',getattr(l.cbDefn,'name',''),getattr(l.cbDefn,'label',''),l.cbDefn.kind else: print style=ParaFrag() style.fontName=_baseFontName style.fontSize = 12 style.textColor = black style.bulletFontName = black style.bulletFontName=_baseFontName style.bulletFontSize=12 text=''' <b><i><greek>a</greek>D</i></b>&beta;<unichr value="0x394"/> <font name="helvetica" size="15" color=green> Tell me, O muse, of that ingenious hero who travelled far and wide after</font> he had sacked the famous town of Troy. Many cities did he visit, and many were the nations with whose manners and customs he was acquainted; moreover he suffered much by sea while trying to save his own life and bring his men safely home; but do what he might he could not save his men, for they perished through their own sheer folly in eating the cattle of the Sun-god Hyperion; so the god prevented them from ever reaching home. Tell me, too, about all these things, O daughter of Jove, from whatsoever source you<super>1</super> may know them. ''' check_text(text) check_text('<para> </para>') check_text('<para font="%s" size=24 leading=28.8 spaceAfter=72>ReportLab -- Reporting for the Internet Age</para>'%_baseFontName) check_text(''' <font color=red>&tau;</font>Tell me, O muse, of that ingenious hero who travelled far and wide after he had sacked the famous town of Troy. Many cities did he visit, and many were the nations with whose manners and customs he was acquainted; moreover he suffered much by sea while trying to save his own life and bring his men safely home; but do what he might he could not save his men, for they perished through their own sheer folly in eating the cattle of the Sun-god Hyperion; so the god prevented them from ever reaching home. Tell me, too, about all these things, O daughter of Jove, from whatsoever source you may know them.''') check_text(''' Telemachus took this speech as of good omen and rose at once, for he was bursting with what he had to say. He stood in the middle of the assembly and the good herald Pisenor brought him his staff. Then, turning to Aegyptius, "Sir," said he, "it is I, as you will shortly learn, who have convened you, for it is I who am the most aggrieved. I have not got wind of any host approaching about which I would warn you, nor is there any matter of public moment on which I would speak. My grieveance is purely personal, and turns on two great misfortunes which have fallen upon my house. The first of these is the loss of my excellent father, who was chief among all you here present, and was like a father to every one of you; the second is much more serious, and ere long will be the utter ruin of my estate. The sons of all the chief men among you are pestering my mother to marry them against her will. They are afraid to go to her father Icarius, asking him to choose the one he likes best, and to provide marriage gifts for his daughter, but day by day they keep hanging about my father's house, sacrificing our oxen, sheep, and fat goats for their banquets, and never giving so much as a thought to the quantity of wine they drink. No estate can stand such recklessness; we have now no Ulysses to ward off harm from our doors, and I cannot hold my own against them. I shall never all my days be as good a man as he was, still I would indeed defend myself if I had power to do so, for I cannot stand such treatment any longer; my house is being disgraced and ruined. Have respect, therefore, to your own consciences and to public opinion. Fear, too, the wrath of heaven, lest the gods should be displeased and turn upon you. I pray you by Jove and Themis, who is the beginning and the end of councils, [do not] hold back, my friends, and leave me singlehanded- unless it be that my brave father Ulysses did some wrong to the Achaeans which you would now avenge on me, by aiding and abetting these suitors. Moreover, if I am to be eaten out of house and home at all, I had rather you did the eating yourselves, for I could then take action against you to some purpose, and serve you with notices from house to house till I got paid in full, whereas now I have no remedy."''') check_text(''' But as the sun was rising from the fair sea into the firmament of heaven to shed light on mortals and immortals, they reached Pylos the city of Neleus. Now the people of Pylos were gathered on the sea shore to offer sacrifice of black bulls to Neptune lord of the Earthquake. There were nine guilds with five hundred men in each, and there were nine bulls to each guild. As they were eating the inward meats and burning the thigh bones [on the embers] in the name of Neptune, Telemachus and his crew arrived, furled their sails, brought their ship to anchor, and went ashore. ''') check_text(''' So the neighbours and kinsmen of Menelaus were feasting and making merry in his house. There was a bard also to sing to them and play his lyre, while two tumblers went about performing in the midst of them when the man struck up with his tune.]''') check_text(''' "When we had passed the [Wandering] rocks, with Scylla and terrible Charybdis, we reached the noble island of the sun-god, where were the goodly cattle and sheep belonging to the sun Hyperion. While still at sea in my ship I could bear the cattle lowing as they came home to the yards, and the sheep bleating. Then I remembered what the blind Theban prophet Teiresias had told me, and how carefully Aeaean Circe had warned me to shun the island of the blessed sun-god. So being much troubled I said to the men, 'My men, I know you are hard pressed, but listen while I <strike>tell you the prophecy that</strike> Teiresias made me, and how carefully Aeaean Circe warned me to shun the island of the blessed sun-god, for it was here, she said, that our worst danger would lie. Head the ship, therefore, away from the island.''') check_text('''A&lt;B&gt;C&amp;D&quot;E&apos;F''') check_text('''A&lt; B&gt; C&amp; D&quot; E&apos; F''') check_text('''<![CDATA[<>&'"]]>''') check_text('''<bullet face=courier size=14 color=green>+</bullet> There was a bard also to sing to them and play his lyre, while two tumblers went about performing in the midst of them when the man struck up with his tune.]''') check_text('''<onDraw name="myFunc" label="aaa bbb">A paragraph''') check_text('''<para><onDraw name="myFunc" label="aaa bbb">B paragraph</para>''') # HVB, 30.05.2003: Test for new features _parser.caseSensitive=0 check_text('''Here comes <FONT FACE="Helvetica" SIZE="14pt">Helvetica 14</FONT> with <STRONG>strong</STRONG> <EM>emphasis</EM>.''') check_text('''Here comes <font face="Helvetica" size="14pt">Helvetica 14</font> with <Strong>strong</Strong> <em>emphasis</em>.''') check_text('''Here comes <font face="Courier" size="3cm">Courier 3cm</font> and normal again.''') check_text('''Before the break <br/>the middle line <br/> and the last line.''') check_text('''This should be an inline image <img src='../docs/images/testimg.gif'/>!''') check_text('''aaa&nbsp;bbbb <u>underline&#32;</u> cccc''')