+++ /dev/null
-# Text formatting abstractions
-
-
-# Oft-used type object
-Int = type(0)
-
-
-# Represent a paragraph. This is a list of words with associated
-# font and size information, plus indents and justification for the
-# entire paragraph.
-# Once the words have been added to a paragraph, it can be laid out
-# for different line widths. Once laid out, it can be rendered at
-# different screen locations. Once rendered, it can be queried
-# for mouse hits, and parts of the text can be highlighted
-class Para:
- #
- def __init__(self):
- self.words = [] # The words
- self.just = 'l' # Justification: 'l', 'r', 'lr' or 'c'
- self.indent_left = self.indent_right = self.indent_hang = 0
- # Final lay-out parameters, may change
- self.left = self.top = self.right = self.bottom = \
- self.width = self.height = self.lines = None
- #
- # Add a word, computing size information for it.
- # Words may also be added manually by appending to self.words
- # Each word should be a 7-tuple:
- # (font, text, width, space, stretch, ascent, descent)
- def addword(self, d, font, text, space, stretch):
- if font <> None:
- d.setfont(font)
- width = d.textwidth(text)
- ascent = d.baseline()
- descent = d.lineheight() - ascent
- spw = d.textwidth(' ')
- space = space * spw
- stretch = stretch * spw
- tuple = (font, text, width, space, stretch, ascent, descent)
- self.words.append(tuple)
- #
- # Hooks to begin and end anchors -- insert numbers in the word list!
- def bgn_anchor(self, id):
- self.words.append(id)
- #
- def end_anchor(self, id):
- self.words.append(0)
- #
- # Return the total length (width) of the text added so far, in pixels
- def getlength(self):
- total = 0
- for word in self.words:
- if type(word) <> Int:
- total = total + word[2] + word[3]
- return total
- #
- # Tab to a given position (relative to the current left indent):
- # remove all stretch, add fixed space up to the new indent.
- # If the current position is already beying the tab stop,
- # don't add any new space (but still remove the stretch)
- def tabto(self, tab):
- total = 0
- as, de = 1, 0
- for i in range(len(self.words)):
- word = self.words[i]
- if type(word) == Int: continue
- fo, te, wi, sp, st, as, de = word
- self.words[i] = fo, te, wi, sp, 0, as, de
- total = total + wi + sp
- if total < tab:
- self.words.append((None, '', 0, tab-total, 0, as, de))
- #
- # Make a hanging tag: tab to hang, increment indent_left by hang,
- # and reset indent_hang to -hang
- def makehangingtag(self, hang):
- self.tabto(hang)
- self.indent_left = self.indent_left + hang
- self.indent_hang = -hang
- #
- # Decide where the line breaks will be given some screen width
- def layout(self, linewidth):
- self.width = linewidth
- height = 0
- self.lines = lines = []
- avail1 = self.width - self.indent_left - self.indent_right
- avail = avail1 - self.indent_hang
- words = self.words
- i = 0
- n = len(words)
- lastfont = None
- while i < n:
- firstfont = lastfont
- charcount = 0
- width = 0
- stretch = 0
- ascent = 0
- descent = 0
- lsp = 0
- j = i
- while i < n:
- word = words[i]
- if type(word) == Int:
- if word > 0 and width >= avail:
- break
- i = i+1
- continue
- fo, te, wi, sp, st, as, de = word
- if width + wi > avail and width > 0 and wi > 0:
- break
- if fo <> None:
- lastfont = fo
- if width == 0:
- firstfont = fo
- charcount = charcount + len(te) + (sp > 0)
- width = width + wi + sp
- lsp = sp
- stretch = stretch + st
- lst = st
- ascent = max(ascent, as)
- descent = max(descent, de)
- i = i+1
- while i > j and type(words[i-1]) == Int and \
- words[i-1] > 0: i = i-1
- width = width - lsp
- if i < n:
- stretch = stretch - lst
- else:
- stretch = 0
- tuple = i-j, firstfont, charcount, width, stretch, \
- ascent, descent
- lines.append(tuple)
- height = height + ascent + descent
- avail = avail1
- self.height = height
- #
- # Call a function for all words in a line
- def visit(self, wordfunc, anchorfunc):
- avail1 = self.width - self.indent_left - self.indent_right
- avail = avail1 - self.indent_hang
- v = self.top
- i = 0
- for tuple in self.lines:
- wordcount, firstfont, charcount, width, stretch, \
- ascent, descent = tuple
- h = self.left + self.indent_left
- if i == 0: h = h + self.indent_hang
- extra = 0
- if self.just == 'r': h = h + avail - width
- elif self.just == 'c': h = h + (avail - width) / 2
- elif self.just == 'lr' and stretch > 0:
- extra = avail - width
- v2 = v + ascent + descent
- for j in range(i, i+wordcount):
- word = self.words[j]
- if type(word) == Int:
- ok = anchorfunc(self, tuple, word, \
- h, v)
- if ok <> None: return ok
- continue
- fo, te, wi, sp, st, as, de = word
- if extra > 0 and stretch > 0:
- ex = extra * st / stretch
- extra = extra - ex
- stretch = stretch - st
- else:
- ex = 0
- h2 = h + wi + sp + ex
- ok = wordfunc(self, tuple, word, h, v, \
- h2, v2, (j==i), (j==i+wordcount-1))
- if ok <> None: return ok
- h = h2
- v = v2
- i = i + wordcount
- avail = avail1
- #
- # Render a paragraph in "drawing object" d, using the rectangle
- # given by (left, top, right) with an unspecified bottom.
- # Return the computed bottom of the text.
- def render(self, d, left, top, right):
- if self.width <> right-left:
- self.layout(right-left)
- self.left = left
- self.top = top
- self.right = right
- self.bottom = self.top + self.height
- self.anchorid = 0
- try:
- self.d = d
- self.visit(self.__class__._renderword, \
- self.__class__._renderanchor)
- finally:
- self.d = None
- return self.bottom
- #
- def _renderword(self, tuple, word, h, v, h2, v2, isfirst, islast):
- if word[0] <> None: self.d.setfont(word[0])
- baseline = v + tuple[5]
- self.d.text((h, baseline - word[5]), word[1])
- if self.anchorid > 0:
- self.d.line((h, baseline+2), (h2, baseline+2))
- #
- def _renderanchor(self, tuple, word, h, v):
- self.anchorid = word
- #
- # Return which anchor(s) was hit by the mouse
- def hitcheck(self, mouseh, mousev):
- self.mouseh = mouseh
- self.mousev = mousev
- self.anchorid = 0
- self.hits = []
- self.visit(self.__class__._hitcheckword, \
- self.__class__._hitcheckanchor)
- return self.hits
- #
- def _hitcheckword(self, tuple, word, h, v, h2, v2, isfirst, islast):
- if self.anchorid > 0 and h <= self.mouseh <= h2 and \
- v <= self.mousev <= v2:
- self.hits.append(self.anchorid)
- #
- def _hitcheckanchor(self, tuple, word, h, v):
- self.anchorid = word
- #
- # Return whether the given anchor id is present
- def hasanchor(self, id):
- return id in self.words or -id in self.words
- #
- # Extract the raw text from the word list, substituting one space
- # for non-empty inter-word space, and terminating with '\n'
- def extract(self):
- text = ''
- for w in self.words:
- if type(w) <> Int:
- word = w[1]
- if w[3]: word = word + ' '
- text = text + word
- return text + '\n'
- #
- # Return which character position was hit by the mouse, as
- # an offset in the entire text as returned by extract().
- # Return None if the mouse was not in this paragraph
- def whereis(self, d, mouseh, mousev):
- if mousev < self.top or mousev > self.bottom:
- return None
- self.mouseh = mouseh
- self.mousev = mousev
- self.lastfont = None
- self.charcount = 0
- try:
- self.d = d
- return self.visit(self.__class__._whereisword, \
- self.__class__._whereisanchor)
- finally:
- self.d = None
- #
- def _whereisword(self, tuple, word, h1, v1, h2, v2, isfirst, islast):
- fo, te, wi, sp, st, as, de = word
- if fo <> None: self.lastfont = fo
- h = h1
- if isfirst: h1 = 0
- if islast: h2 = 999999
- if not (v1 <= self.mousev <= v2 and h1 <= self.mouseh <= h2):
- self.charcount = self.charcount + len(te) + (sp > 0)
- return
- if self.lastfont <> None:
- self.d.setfont(self.lastfont)
- cc = 0
- for c in te:
- cw = self.d.textwidth(c)
- if self.mouseh <= h + cw/2:
- return self.charcount + cc
- cc = cc+1
- h = h+cw
- self.charcount = self.charcount + cc
- if self.mouseh <= (h+h2) / 2:
- return self.charcount
- else:
- return self.charcount + 1
- #
- def _whereisanchor(self, tuple, word, h, v):
- pass
- #
- # Return screen position corresponding to position in paragraph.
- # Return tuple (h, vtop, vbaseline, vbottom).
- # This is more or less the inverse of whereis()
- def screenpos(self, d, pos):
- if pos < 0:
- ascent, descent = self.lines[0][5:7]
- return self.left, self.top, self.top + ascent, \
- self.top + ascent + descent
- self.pos = pos
- self.lastfont = None
- try:
- self.d = d
- ok = self.visit(self.__class__._screenposword, \
- self.__class__._screenposanchor)
- finally:
- self.d = None
- if ok == None:
- ascent, descent = self.lines[-1][5:7]
- ok = self.right, self.bottom - ascent - descent, \
- self.bottom - descent, self.bottom
- return ok
- #
- def _screenposword(self, tuple, word, h1, v1, h2, v2, isfirst, islast):
- fo, te, wi, sp, st, as, de = word
- if fo <> None: self.lastfont = fo
- cc = len(te) + (sp > 0)
- if self.pos > cc:
- self.pos = self.pos - cc
- return
- if self.pos < cc:
- self.d.setfont(self.lastfont)
- h = h1 + self.d.textwidth(te[:self.pos])
- else:
- h = h2
- ascent, descent = tuple[5:7]
- return h, v1, v1+ascent, v2
- #
- def _screenposanchor(self, tuple, word, h, v):
- pass
- #
- # Invert the stretch of text between pos1 and pos2.
- # If pos1 is None, the beginning is implied;
- # if pos2 is None, the end is implied.
- # Undoes its own effect when called again with the same arguments
- def invert(self, d, pos1, pos2):
- if pos1 == None:
- pos1 = self.left, self.top, self.top, self.top
- else:
- pos1 = self.screenpos(d, pos1)
- if pos2 == None:
- pos2 = self.right, self.bottom,self.bottom,self.bottom
- else:
- pos2 = self.screenpos(d, pos2)
- h1, top1, baseline1, bottom1 = pos1
- h2, top2, baseline2, bottom2 = pos2
- if bottom1 <= top2:
- d.invert((h1, top1), (self.right, bottom1))
- h1 = self.left
- if bottom1 < top2:
- d.invert((h1, bottom1), (self.right, top2))
- top1, bottom1 = top2, bottom2
- d.invert((h1, top1), (h2, bottom2))
-
-
-# Test class Para
-# XXX This was last used on the Mac, hence the weird fonts...
-def test():
- import stdwin
- from stdwinevents import *
- words = 'The', 'quick', 'brown', 'fox', 'jumps', 'over', \
- 'the', 'lazy', 'dog.'
- paralist = []
- for just in 'l', 'r', 'lr', 'c':
- p = Para()
- p.just = just
- p.addword(stdwin, ('New York', 'p', 12), words[0], 1, 1)
- for word in words[1:-1]:
- p.addword(stdwin, None, word, 1, 1)
- p.addword(stdwin, None, words[-1], 2, 4)
- p.addword(stdwin, ('New York', 'b', 18), 'Bye!', 0, 0)
- p.addword(stdwin, ('New York', 'p', 10), 'Bye!', 0, 0)
- paralist.append(p)
- window = stdwin.open('Para.test()')
- start = stop = selpara = None
- while 1:
- etype, win, detail = stdwin.getevent()
- if etype == WE_CLOSE:
- break
- if etype == WE_SIZE:
- window.change((0, 0), (1000, 1000))
- if etype == WE_DRAW:
- width, height = window.getwinsize()
- d = None
- try:
- d = window.begindrawing()
- d.cliprect(detail)
- d.erase(detail)
- v = 0
- for p in paralist:
- v = p.render(d, 0, v, width)
- if p == selpara and \
- start <> None and stop <> None:
- p.invert(d, start, stop)
- finally:
- if d: d.close()
- if etype == WE_MOUSE_DOWN:
- if selpara and start <> None and stop <> None:
- d = window.begindrawing()
- selpara.invert(d, start, stop)
- d.close()
- start = stop = selpara = None
- mouseh, mousev = detail[0]
- for p in paralist:
- start = p.whereis(stdwin, mouseh, mousev)
- if start <> None:
- selpara = p
- break
- if etype == WE_MOUSE_UP and start <> None and selpara:
- mouseh, mousev = detail[0]
- stop = selpara.whereis(stdwin, mouseh, mousev)
- if stop == None: start = selpara = None
- else:
- if start > stop:
- start, stop = stop, start
- d = window.begindrawing()
- selpara.invert(d, start, stop)
- d.close()
- window.close()
+++ /dev/null
-# Text formatting abstractions
-
-
-import string
-import Para
-
-
-# A formatter back-end object has one method that is called by the formatter:
-# addpara(p), where p is a paragraph object. For example:
-
-
-# Formatter back-end to do nothing at all with the paragraphs
-class NullBackEnd:
- #
- def __init__(self):
- pass
- #
- def addpara(self, p):
- pass
- #
- def bgn_anchor(self, id):
- pass
- #
- def end_anchor(self, id):
- pass
-
-
-# Formatter back-end to collect the paragraphs in a list
-class SavingBackEnd(NullBackEnd):
- #
- def __init__(self):
- self.paralist = []
- #
- def addpara(self, p):
- self.paralist.append(p)
- #
- def hitcheck(self, h, v):
- hits = []
- for p in self.paralist:
- if p.top <= v <= p.bottom:
- for id in p.hitcheck(h, v):
- if id not in hits:
- hits.append(id)
- return hits
- #
- def extract(self):
- text = ''
- for p in self.paralist:
- text = text + (p.extract())
- return text
- #
- def extractpart(self, long1, long2):
- if long1 > long2: long1, long2 = long2, long1
- para1, pos1 = long1
- para2, pos2 = long2
- text = ''
- while para1 < para2:
- ptext = self.paralist[para1].extract()
- text = text + ptext[pos1:]
- pos1 = 0
- para1 = para1 + 1
- ptext = self.paralist[para2].extract()
- return text + ptext[pos1:pos2]
- #
- def whereis(self, d, h, v):
- total = 0
- for i in range(len(self.paralist)):
- p = self.paralist[i]
- result = p.whereis(d, h, v)
- if result <> None:
- return i, result
- return None
- #
- def roundtowords(self, long1, long2):
- i, offset = long1
- text = self.paralist[i].extract()
- while offset > 0 and text[offset-1] <> ' ': offset = offset-1
- long1 = i, offset
- #
- i, offset = long2
- text = self.paralist[i].extract()
- n = len(text)
- while offset < n-1 and text[offset] <> ' ': offset = offset+1
- long2 = i, offset
- #
- return long1, long2
- #
- def roundtoparagraphs(self, long1, long2):
- long1 = long1[0], 0
- long2 = long2[0], len(self.paralist[long2[0]].extract())
- return long1, long2
-
-
-# Formatter back-end to send the text directly to the drawing object
-class WritingBackEnd(NullBackEnd):
- #
- def __init__(self, d, width):
- self.d = d
- self.width = width
- self.lineno = 0
- #
- def addpara(self, p):
- self.lineno = p.render(self.d, 0, self.lineno, self.width)
-
-
-# A formatter receives a stream of formatting instructions and assembles
-# these into a stream of paragraphs on to a back-end. The assembly is
-# parametrized by a text measurement object, which must match the output
-# operations of the back-end. The back-end is responsible for splitting
-# paragraphs up in lines of a given maximum width. (This is done because
-# in a windowing environment, when the window size changes, there is no
-# need to redo the assembly into paragraphs, but the splitting into lines
-# must be done taking the new window size into account.)
-
-
-# Formatter base class. Initialize it with a text measurement object,
-# which is used for text measurements, and a back-end object,
-# which receives the completed paragraphs. The formatting methods are:
-# setfont(font)
-# setleftindent(nspaces)
-# setjust(type) where type is 'l', 'c', 'r', or 'lr'
-# flush()
-# vspace(nlines)
-# needvspace(nlines)
-# addword(word, nspaces)
-class BaseFormatter:
- #
- def __init__(self, d, b):
- # Drawing object used for text measurements
- self.d = d
- #
- # BackEnd object receiving completed paragraphs
- self.b = b
- #
- # Parameters of the formatting model
- self.leftindent = 0
- self.just = 'l'
- self.font = None
- self.blanklines = 0
- #
- # Parameters derived from the current font
- self.space = d.textwidth(' ')
- self.line = d.lineheight()
- self.ascent = d.baseline()
- self.descent = self.line - self.ascent
- #
- # Parameter derived from the default font
- self.n_space = self.space
- #
- # Current paragraph being built
- self.para = None
- self.nospace = 1
- #
- # Font to set on the next word
- self.nextfont = None
- #
- def newpara(self):
- return Para.Para()
- #
- def setfont(self, font):
- if font == None: return
- self.font = self.nextfont = font
- d = self.d
- d.setfont(font)
- self.space = d.textwidth(' ')
- self.line = d.lineheight()
- self.ascent = d.baseline()
- self.descent = self.line - self.ascent
- #
- def setleftindent(self, nspaces):
- self.leftindent = int(self.n_space * nspaces)
- if self.para:
- hang = self.leftindent - self.para.indent_left
- if hang > 0 and self.para.getlength() <= hang:
- self.para.makehangingtag(hang)
- self.nospace = 1
- else:
- self.flush()
- #
- def setrightindent(self, nspaces):
- self.rightindent = int(self.n_space * nspaces)
- if self.para:
- self.para.indent_right = self.rightindent
- self.flush()
- #
- def setjust(self, just):
- self.just = just
- if self.para:
- self.para.just = self.just
- #
- def flush(self):
- if self.para:
- self.b.addpara(self.para)
- self.para = None
- if self.font <> None:
- self.d.setfont(self.font)
- self.nospace = 1
- #
- def vspace(self, nlines):
- self.flush()
- if nlines > 0:
- self.para = self.newpara()
- tuple = None, '', 0, 0, 0, int(nlines*self.line), 0
- self.para.words.append(tuple)
- self.flush()
- self.blanklines = self.blanklines + nlines
- #
- def needvspace(self, nlines):
- self.flush() # Just to be sure
- if nlines > self.blanklines:
- self.vspace(nlines - self.blanklines)
- #
- def addword(self, text, space):
- if self.nospace and not text:
- return
- self.nospace = 0
- self.blanklines = 0
- if not self.para:
- self.para = self.newpara()
- self.para.indent_left = self.leftindent
- self.para.just = self.just
- self.nextfont = self.font
- space = int(space * self.space)
- self.para.words.append(self.nextfont, text, \
- self.d.textwidth(text), space, space, \
- self.ascent, self.descent)
- self.nextfont = None
- #
- def bgn_anchor(self, id):
- if not self.para:
- self.nospace = 0
- self.addword('', 0)
- self.para.bgn_anchor(id)
- #
- def end_anchor(self, id):
- if not self.para:
- self.nospace = 0
- self.addword('', 0)
- self.para.end_anchor(id)
- #
- def hrule(self):
- # Typically need to override this for bit-mapped displays
- self.flush()
- self.addword('-'*60, 0)
- self.flush()
-
-
-# Measuring object for measuring text as viewed on a tty
-class NullMeasurer:
- #
- def __init__(self):
- pass
- #
- def setfont(self, font):
- pass
- #
- def textwidth(self, text):
- return len(text)
- #
- def lineheight(self):
- return 1
- #
- def baseline(self):
- return 0
-
-
-# Drawing object for writing plain ASCII text to a file
-class FileWriter:
- #
- def __init__(self, fp):
- self.fp = fp
- self.lineno, self.colno = 0, 0
- #
- def setfont(self, font):
- pass
- #
- def text(self, (h, v), str):
- if not str: return
- if '\n' in str:
- raise ValueError, 'can\'t write \\n'
- while self.lineno < v:
- self.fp.write('\n')
- self.colno, self.lineno = 0, self.lineno + 1
- while self.lineno > v:
- # XXX This should never happen...
- self.fp.write('\033[A') # ANSI up arrow
- self.lineno = self.lineno - 1
- if self.colno < h:
- self.fp.write(' ' * (h - self.colno))
- elif self.colno > h:
- self.fp.write('\b' * (self.colno - h))
- self.colno = h
- self.fp.write(str)
- self.colno = h + len(str)
-
-
-# Formatting class to do nothing at all with the data
-class NullFormatter(BaseFormatter):
- #
- def __init__(self):
- d = NullMeasurer()
- b = NullBackEnd()
- BaseFormatter.__init__(self, d, b)
-
-
-# Formatting class to write directly to a file
-class WritingFormatter(BaseFormatter):
- #
- def __init__(self, fp, width):
- dm = NullMeasurer()
- dw = FileWriter(fp)
- b = WritingBackEnd(dw, width)
- BaseFormatter.__init__(self, dm, b)
- self.blanklines = 1
- #
- # Suppress multiple blank lines
- def needvspace(self, nlines):
- BaseFormatter.needvspace(self, min(1, nlines))
-
-
-# A "FunnyFormatter" writes ASCII text with a twist: *bold words*,
-# _italic text_ and _underlined words_, and `quoted text'.
-# It assumes that the fonts are 'r', 'i', 'b', 'u', 'q': (roman,
-# italic, bold, underline, quote).
-# Moreover, if the font is in upper case, the text is converted to
-# UPPER CASE.
-class FunnyFormatter(WritingFormatter):
- #
- def flush(self):
- if self.para: finalize(self.para)
- WritingFormatter.flush(self)
-
-
-# Surrounds *bold words* and _italic text_ in a paragraph with
-# appropriate markers, fixing the size (assuming these characters'
-# width is 1).
-openchar = \
- {'b':'*', 'i':'_', 'u':'_', 'q':'`', 'B':'*', 'I':'_', 'U':'_', 'Q':'`'}
-closechar = \
- {'b':'*', 'i':'_', 'u':'_', 'q':'\'', 'B':'*', 'I':'_', 'U':'_', 'Q':'\''}
-def finalize(para):
- oldfont = curfont = 'r'
- para.words.append('r', '', 0, 0, 0, 0) # temporary, deleted at end
- for i in range(len(para.words)):
- fo, te, wi = para.words[i][:3]
- if fo <> None: curfont = fo
- if curfont <> oldfont:
- if closechar.has_key(oldfont):
- c = closechar[oldfont]
- j = i-1
- while j > 0 and para.words[j][1] == '': j = j-1
- fo1, te1, wi1 = para.words[j][:3]
- te1 = te1 + c
- wi1 = wi1 + len(c)
- para.words[j] = (fo1, te1, wi1) + \
- para.words[j][3:]
- if openchar.has_key(curfont) and te:
- c = openchar[curfont]
- te = c + te
- wi = len(c) + wi
- para.words[i] = (fo, te, wi) + \
- para.words[i][3:]
- if te: oldfont = curfont
- else: oldfont = 'r'
- if curfont in string.uppercase:
- te = string.upper(te)
- para.words[i] = (fo, te, wi) + para.words[i][3:]
- del para.words[-1]
-
-
-# Formatter back-end to draw the text in a window.
-# This has an option to draw while the paragraphs are being added,
-# to minimize the delay before the user sees anything.
-# This manages the entire "document" of the window.
-class StdwinBackEnd(SavingBackEnd):
- #
- def __init__(self, window, drawnow):
- self.window = window
- self.drawnow = drawnow
- self.width = window.getwinsize()[0]
- self.selection = None
- self.height = 0
- window.setorigin(0, 0)
- window.setdocsize(0, 0)
- self.d = window.begindrawing()
- SavingBackEnd.__init__(self)
- #
- def finish(self):
- self.d.close()
- self.d = None
- self.window.setdocsize(0, self.height)
- #
- def addpara(self, p):
- self.paralist.append(p)
- if self.drawnow:
- self.height = \
- p.render(self.d, 0, self.height, self.width)
- else:
- p.layout(self.width)
- p.left = 0
- p.top = self.height
- p.right = self.width
- p.bottom = self.height + p.height
- self.height = p.bottom
- #
- def resize(self):
- self.window.change((0, 0), (self.width, self.height))
- self.width = self.window.getwinsize()[0]
- self.height = 0
- for p in self.paralist:
- p.layout(self.width)
- p.left = 0
- p.top = self.height
- p.right = self.width
- p.bottom = self.height + p.height
- self.height = p.bottom
- self.window.change((0, 0), (self.width, self.height))
- self.window.setdocsize(0, self.height)
- #
- def redraw(self, area):
- d = self.window.begindrawing()
- (left, top), (right, bottom) = area
- d.erase(area)
- d.cliprect(area)
- for p in self.paralist:
- if top < p.bottom and p.top < bottom:
- v = p.render(d, p.left, p.top, p.right)
- if self.selection:
- self.invert(d, self.selection)
- d.close()
- #
- def setselection(self, new):
- if new:
- long1, long2 = new
- pos1 = long1[:3]
- pos2 = long2[:3]
- new = pos1, pos2
- if new <> self.selection:
- d = self.window.begindrawing()
- if self.selection:
- self.invert(d, self.selection)
- if new:
- self.invert(d, new)
- d.close()
- self.selection = new
- #
- def getselection(self):
- return self.selection
- #
- def extractselection(self):
- if self.selection:
- a, b = self.selection
- return self.extractpart(a, b)
- else:
- return None
- #
- def invert(self, d, region):
- long1, long2 = region
- if long1 > long2: long1, long2 = long2, long1
- para1, pos1 = long1
- para2, pos2 = long2
- while para1 < para2:
- self.paralist[para1].invert(d, pos1, None)
- pos1 = None
- para1 = para1 + 1
- self.paralist[para2].invert(d, pos1, pos2)
- #
- def search(self, prog):
- import regex, string
- if type(prog) == type(''):
- prog = regex.compile(string.lower(prog))
- if self.selection:
- iold = self.selection[0][0]
- else:
- iold = -1
- hit = None
- for i in range(len(self.paralist)):
- if i == iold or i < iold and hit:
- continue
- p = self.paralist[i]
- text = string.lower(p.extract())
- if prog.search(text) >= 0:
- a, b = prog.regs[0]
- long1 = i, a
- long2 = i, b
- hit = long1, long2
- if i > iold:
- break
- if hit:
- self.setselection(hit)
- i = hit[0][0]
- p = self.paralist[i]
- self.window.show((p.left, p.top), (p.right, p.bottom))
- return 1
- else:
- return 0
- #
- def showanchor(self, id):
- for i in range(len(self.paralist)):
- p = self.paralist[i]
- if p.hasanchor(id):
- long1 = i, 0
- long2 = i, len(p.extract())
- hit = long1, long2
- self.setselection(hit)
- self.window.show( \
- (p.left, p.top), (p.right, p.bottom))
- break
-
-
-# GL extensions
-
-class GLFontCache:
- #
- def __init__(self):
- self.reset()
- self.setfont('')
- #
- def reset(self):
- self.fontkey = None
- self.fonthandle = None
- self.fontinfo = None
- self.fontcache = {}
- #
- def close(self):
- self.reset()
- #
- def setfont(self, fontkey):
- if fontkey == '':
- fontkey = 'Times-Roman 12'
- elif ' ' not in fontkey:
- fontkey = fontkey + ' 12'
- if fontkey == self.fontkey:
- return
- if self.fontcache.has_key(fontkey):
- handle = self.fontcache[fontkey]
- else:
- import string
- i = string.index(fontkey, ' ')
- name, sizestr = fontkey[:i], fontkey[i:]
- size = eval(sizestr)
- key1 = name + ' 1'
- key = name + ' ' + `size`
- # NB key may differ from fontkey!
- if self.fontcache.has_key(key):
- handle = self.fontcache[key]
- else:
- if self.fontcache.has_key(key1):
- handle = self.fontcache[key1]
- else:
- import fm
- handle = fm.findfont(name)
- self.fontcache[key1] = handle
- handle = handle.scalefont(size)
- self.fontcache[fontkey] = \
- self.fontcache[key] = handle
- self.fontkey = fontkey
- if self.fonthandle <> handle:
- self.fonthandle = handle
- self.fontinfo = handle.getfontinfo()
- handle.setfont()
-
-
-class GLMeasurer(GLFontCache):
- #
- def textwidth(self, text):
- return self.fonthandle.getstrwidth(text)
- #
- def baseline(self):
- return self.fontinfo[6] - self.fontinfo[3]
- #
- def lineheight(self):
- return self.fontinfo[6]
-
-
-class GLWriter(GLFontCache):
- #
- # NOTES:
- # (1) Use gl.ortho2 to use X pixel coordinates!
- #
- def text(self, (h, v), text):
- import gl, fm
- gl.cmov2i(h, v + self.fontinfo[6] - self.fontinfo[3])
- fm.prstr(text)
- #
- def setfont(self, fontkey):
- oldhandle = self.fonthandle
- GLFontCache.setfont(fontkey)
- if self.fonthandle <> oldhandle:
- handle.setfont()
-
-
-class GLMeasurerWriter(GLMeasurer, GLWriter):
- pass
-
-
-class GLBackEnd(SavingBackEnd):
- #
- def __init__(self, wid):
- import gl
- gl.winset(wid)
- self.wid = wid
- self.width = gl.getsize()[1]
- self.height = 0
- self.d = GLMeasurerWriter()
- SavingBackEnd.__init__(self)
- #
- def finish(self):
- pass
- #
- def addpara(self, p):
- self.paralist.append(p)
- self.height = p.render(self.d, 0, self.height, self.width)
- #
- def redraw(self):
- import gl
- gl.winset(self.wid)
- width = gl.getsize()[1]
- if width <> self.width:
- setdocsize = 1
- self.width = width
- for p in self.paralist:
- p.top = p.bottom = None
- d = self.d
- v = 0
- for p in self.paralist:
- v = p.render(d, 0, v, width)
+++ /dev/null
-# A parser for HTML documents
-
-
-# HTML: HyperText Markup Language; an SGML-like syntax used by WWW to
-# describe hypertext documents
-#
-# SGML: Standard Generalized Markup Language
-#
-# WWW: World-Wide Web; a distributed hypertext system develped at CERN
-#
-# CERN: European Particle Physics Laboratory in Geneva, Switzerland
-
-
-# This file is only concerned with parsing and formatting HTML
-# documents, not with the other (hypertext and networking) aspects of
-# the WWW project. (It does support highlighting of anchors.)
-
-
-import os
-import sys
-import regex
-import string
-import sgmllib
-
-
-class HTMLParser(sgmllib.SGMLParser):
-
- # Copy base class entities and add some
- entitydefs = {}
- for key in sgmllib.SGMLParser.entitydefs.keys():
- entitydefs[key] = sgmllib.SGMLParser.entitydefs[key]
- entitydefs['bullet'] = '*'
-
- # Provided -- handlers for tags introducing literal text
-
- def start_listing(self, attrs):
- self.setliteral('listing')
- self.literal_bgn('listing', attrs)
-
- def end_listing(self):
- self.literal_end('listing')
-
- def start_xmp(self, attrs):
- self.setliteral('xmp')
- self.literal_bgn('xmp', attrs)
-
- def end_xmp(self):
- self.literal_end('xmp')
-
- def do_plaintext(self, attrs):
- self.setnomoretags()
- self.literal_bgn('plaintext', attrs)
-
- # To be overridden -- begin/end literal mode
- def literal_bgn(self, tag, attrs): pass
- def literal_end(self, tag): pass
-
-
-# Next level of sophistication -- collect anchors, title, nextid and isindex
-class CollectingParser(HTMLParser):
- #
- def __init__(self):
- HTMLParser.__init__(self)
- self.savetext = None
- self.nextid = ''
- self.isindex = 0
- self.title = ''
- self.inanchor = 0
- self.anchors = []
- self.anchornames = []
- self.anchortypes = []
- #
- def start_a(self, attrs):
- self.inanchor = 0
- href = ''
- name = ''
- type = ''
- for attrname, value in attrs:
- if attrname == 'href':
- href = value
- if attrname == 'name=':
- name = value
- if attrname == 'type=':
- type = string.lower(value)
- if not (href or name):
- return
- self.anchors.append(href)
- self.anchornames.append(name)
- self.anchortypes.append(type)
- self.inanchor = len(self.anchors)
- if not href:
- self.inanchor = -self.inanchor
- #
- def end_a(self):
- if self.inanchor > 0:
- # Don't show anchors pointing into the current document
- if self.anchors[self.inanchor-1][:1] <> '#':
- self.handle_data('[' + `self.inanchor` + ']')
- self.inanchor = 0
- #
- def start_header(self, attrs): pass
- def end_header(self): pass
- #
- # (head is the same as header)
- def start_head(self, attrs): pass
- def end_head(self): pass
- #
- def start_body(self, attrs): pass
- def end_body(self): pass
- #
- def do_nextid(self, attrs):
- self.nextid = attrs
- #
- def do_isindex(self, attrs):
- self.isindex = 1
- #
- def start_title(self, attrs):
- self.savetext = ''
- #
- def end_title(self):
- if self.savetext <> None:
- self.title = self.savetext
- self.savetext = None
- #
- def handle_data(self, text):
- if self.savetext is not None:
- self.savetext = self.savetext + text
-
-
-# Formatting parser -- takes a formatter and a style sheet as arguments
-
-# XXX The use of style sheets should change: for each tag and end tag
-# there should be a style definition, and a style definition should
-# encompass many more parameters: font, justification, indentation,
-# vspace before, vspace after, hanging tag...
-
-wordprog = regex.compile('[^ \t\n]*')
-spaceprog = regex.compile('[ \t\n]*')
-
-class FormattingParser(CollectingParser):
-
- def __init__(self, formatter, stylesheet):
- CollectingParser.__init__(self)
- self.fmt = formatter
- self.stl = stylesheet
- self.savetext = None
- self.compact = 0
- self.nofill = 0
- self.resetfont()
- self.setindent(self.stl.stdindent)
-
- def resetfont(self):
- self.fontstack = []
- self.stylestack = []
- self.fontset = self.stl.stdfontset
- self.style = ROMAN
- self.passfont()
-
- def passfont(self):
- font = self.fontset[self.style]
- self.fmt.setfont(font)
-
- def pushstyle(self, style):
- self.stylestack.append(self.style)
- self.style = min(style, len(self.fontset)-1)
- self.passfont()
-
- def popstyle(self):
- self.style = self.stylestack[-1]
- del self.stylestack[-1]
- self.passfont()
-
- def pushfontset(self, fontset, style):
- self.fontstack.append(self.fontset)
- self.fontset = fontset
- self.pushstyle(style)
-
- def popfontset(self):
- self.fontset = self.fontstack[-1]
- del self.fontstack[-1]
- self.popstyle()
-
- def flush(self):
- self.fmt.flush()
-
- def setindent(self, n):
- self.fmt.setleftindent(n)
-
- def needvspace(self, n):
- self.fmt.needvspace(n)
-
- def close(self):
- HTMLParser.close(self)
- self.fmt.flush()
-
- def handle_literal(self, text):
- lines = string.splitfields(text, '\n')
- for i in range(1, len(lines)):
- lines[i] = string.expandtabs(lines[i], 8)
- for line in lines[:-1]:
- self.fmt.addword(line, 0)
- self.fmt.flush()
- self.fmt.nospace = 0
- for line in lines[-1:]:
- self.fmt.addword(line, 0)
-
- def handle_data(self, text):
- if self.savetext is not None:
- self.savetext = self.savetext + text
- return
- if self.literal:
- self.handle_literal(text)
- return
- i = 0
- n = len(text)
- while i < n:
- j = i + wordprog.match(text, i)
- word = text[i:j]
- i = j + spaceprog.match(text, j)
- self.fmt.addword(word, i-j)
- if self.nofill and '\n' in text[j:i]:
- self.fmt.flush()
- self.fmt.nospace = 0
- i = j+1
- while text[i-1] <> '\n': i = i+1
-
- def literal_bgn(self, tag, attrs):
- if tag == 'plaintext':
- self.flush()
- else:
- self.needvspace(1)
- self.pushfontset(self.stl.stdfontset, FIXED)
- self.setindent(self.stl.literalindent)
-
- def literal_end(self, tag):
- self.needvspace(1)
- self.popfontset()
- self.setindent(self.stl.stdindent)
-
- def start_title(self, attrs):
- self.flush()
- self.savetext = ''
- # NB end_title is unchanged
-
- def do_p(self, attrs):
- if self.compact:
- self.flush()
- else:
- self.needvspace(1)
-
- def do_hr(self, attrs):
- self.fmt.hrule()
-
- def start_h1(self, attrs):
- self.needvspace(2)
- self.setindent(self.stl.h1indent)
- self.pushfontset(self.stl.h1fontset, BOLD)
- self.fmt.setjust('c')
-
- def end_h1(self):
- self.popfontset()
- self.needvspace(2)
- self.setindent(self.stl.stdindent)
- self.fmt.setjust('l')
-
- def start_h2(self, attrs):
- self.needvspace(1)
- self.setindent(self.stl.h2indent)
- self.pushfontset(self.stl.h2fontset, BOLD)
-
- def end_h2(self):
- self.popfontset()
- self.needvspace(1)
- self.setindent(self.stl.stdindent)
-
- def start_h3(self, attrs):
- self.needvspace(1)
- self.setindent(self.stl.stdindent)
- self.pushfontset(self.stl.h3fontset, BOLD)
-
- def end_h3(self):
- self.popfontset()
- self.needvspace(1)
- self.setindent(self.stl.stdindent)
-
- def start_h4(self, attrs):
- self.needvspace(1)
- self.setindent(self.stl.stdindent)
- self.pushfontset(self.stl.stdfontset, BOLD)
-
- def end_h4(self):
- self.popfontset()
- self.needvspace(1)
- self.setindent(self.stl.stdindent)
-
- start_h5 = start_h4
- end_h5 = end_h4
-
- start_h6 = start_h5
- end_h6 = end_h5
-
- start_h7 = start_h6
- end_h7 = end_h6
-
- def start_ul(self, attrs):
- self.needvspace(1)
- for attrname, value in attrs:
- if attrname == 'compact':
- self.compact = 1
- self.setindent(0)
- break
- else:
- self.setindent(self.stl.ulindent)
-
- start_dir = start_menu = start_ol = start_ul
-
- do_li = do_p
-
- def end_ul(self):
- self.compact = 0
- self.needvspace(1)
- self.setindent(self.stl.stdindent)
-
- end_dir = end_menu = end_ol = end_ul
-
- def start_dl(self, attrs):
- for attrname, value in attrs:
- if attrname == 'compact':
- self.compact = 1
- self.needvspace(1)
-
- def end_dl(self):
- self.compact = 0
- self.needvspace(1)
- self.setindent(self.stl.stdindent)
-
- def do_dt(self, attrs):
- if self.compact:
- self.flush()
- else:
- self.needvspace(1)
- self.setindent(self.stl.stdindent)
-
- def do_dd(self, attrs):
- self.fmt.addword('', 1)
- self.setindent(self.stl.ddindent)
-
- def start_address(self, attrs):
- self.compact = 1
- self.needvspace(1)
- self.fmt.setjust('r')
-
- def end_address(self):
- self.compact = 0
- self.needvspace(1)
- self.setindent(self.stl.stdindent)
- self.fmt.setjust('l')
-
- def start_pre(self, attrs):
- self.needvspace(1)
- self.nofill = self.nofill + 1
- self.pushstyle(FIXED)
-
- def end_pre(self):
- self.popstyle()
- self.nofill = self.nofill - 1
- self.needvspace(1)
-
- start_typewriter = start_pre
- end_typewriter = end_pre
-
- def do_img(self, attrs):
- self.fmt.addword('(image)', 0)
-
- # Physical styles
-
- def start_tt(self, attrs): self.pushstyle(FIXED)
- def end_tt(self): self.popstyle()
-
- def start_b(self, attrs): self.pushstyle(BOLD)
- def end_b(self): self.popstyle()
-
- def start_i(self, attrs): self.pushstyle(ITALIC)
- def end_i(self): self.popstyle()
-
- def start_u(self, attrs): self.pushstyle(ITALIC) # Underline???
- def end_u(self): self.popstyle()
-
- def start_r(self, attrs): self.pushstyle(ROMAN) # Not official
- def end_r(self): self.popstyle()
-
- # Logical styles
-
- start_em = start_i
- end_em = end_i
-
- start_strong = start_b
- end_strong = end_b
-
- start_code = start_tt
- end_code = end_tt
-
- start_samp = start_tt
- end_samp = end_tt
-
- start_kbd = start_tt
- end_kbd = end_tt
-
- start_file = start_tt # unofficial
- end_file = end_tt
-
- start_var = start_i
- end_var = end_i
-
- start_dfn = start_i
- end_dfn = end_i
-
- start_cite = start_i
- end_cite = end_i
-
- start_hp1 = start_i
- end_hp1 = start_i
-
- start_hp2 = start_b
- end_hp2 = end_b
-
- def unknown_starttag(self, tag, attrs):
- print '*** unknown <' + tag + '>'
-
- def unknown_endtag(self, tag):
- print '*** unknown </' + tag + '>'
-
-
-# An extension of the formatting parser which formats anchors differently.
-class AnchoringParser(FormattingParser):
-
- def start_a(self, attrs):
- FormattingParser.start_a(self, attrs)
- if self.inanchor:
- self.fmt.bgn_anchor(self.inanchor)
-
- def end_a(self):
- if self.inanchor:
- self.fmt.end_anchor(self.inanchor)
- self.inanchor = 0
-
-
-# Style sheet -- this is never instantiated, but the attributes
-# of the class object itself are used to specify fonts to be used
-# for various paragraph styles.
-# A font set is a non-empty list of fonts, in the order:
-# [roman, italic, bold, fixed].
-# When a style is not available the nearest lower style is used
-
-ROMAN = 0
-ITALIC = 1
-BOLD = 2
-FIXED = 3
-
-class NullStylesheet:
- # Fonts -- none
- stdfontset = [None]
- h1fontset = [None]
- h2fontset = [None]
- h3fontset = [None]
- # Indents
- stdindent = 2
- ddindent = 25
- ulindent = 4
- h1indent = 0
- h2indent = 0
- literalindent = 0
-
-
-class X11Stylesheet(NullStylesheet):
- stdfontset = [ \
- '-*-helvetica-medium-r-normal-*-*-100-100-*-*-*-*-*', \
- '-*-helvetica-medium-o-normal-*-*-100-100-*-*-*-*-*', \
- '-*-helvetica-bold-r-normal-*-*-100-100-*-*-*-*-*', \
- '-*-courier-medium-r-normal-*-*-100-100-*-*-*-*-*', \
- ]
- h1fontset = [ \
- '-*-helvetica-medium-r-normal-*-*-180-100-*-*-*-*-*', \
- '-*-helvetica-medium-o-normal-*-*-180-100-*-*-*-*-*', \
- '-*-helvetica-bold-r-normal-*-*-180-100-*-*-*-*-*', \
- ]
- h2fontset = [ \
- '-*-helvetica-medium-r-normal-*-*-140-100-*-*-*-*-*', \
- '-*-helvetica-medium-o-normal-*-*-140-100-*-*-*-*-*', \
- '-*-helvetica-bold-r-normal-*-*-140-100-*-*-*-*-*', \
- ]
- h3fontset = [ \
- '-*-helvetica-medium-r-normal-*-*-120-100-*-*-*-*-*', \
- '-*-helvetica-medium-o-normal-*-*-120-100-*-*-*-*-*', \
- '-*-helvetica-bold-r-normal-*-*-120-100-*-*-*-*-*', \
- ]
- ddindent = 40
-
-
-class MacStylesheet(NullStylesheet):
- stdfontset = [ \
- ('Geneva', 'p', 10), \
- ('Geneva', 'i', 10), \
- ('Geneva', 'b', 10), \
- ('Monaco', 'p', 10), \
- ]
- h1fontset = [ \
- ('Geneva', 'p', 18), \
- ('Geneva', 'i', 18), \
- ('Geneva', 'b', 18), \
- ('Monaco', 'p', 18), \
- ]
- h3fontset = [ \
- ('Geneva', 'p', 14), \
- ('Geneva', 'i', 14), \
- ('Geneva', 'b', 14), \
- ('Monaco', 'p', 14), \
- ]
- h3fontset = [ \
- ('Geneva', 'p', 12), \
- ('Geneva', 'i', 12), \
- ('Geneva', 'b', 12), \
- ('Monaco', 'p', 12), \
- ]
-
-
-if os.name == 'mac':
- StdwinStylesheet = MacStylesheet
-else:
- StdwinStylesheet = X11Stylesheet
-
-
-class GLStylesheet(NullStylesheet):
- stdfontset = [ \
- 'Helvetica 10', \
- 'Helvetica-Italic 10', \
- 'Helvetica-Bold 10', \
- 'Courier 10', \
- ]
- h1fontset = [ \
- 'Helvetica 18', \
- 'Helvetica-Italic 18', \
- 'Helvetica-Bold 18', \
- 'Courier 18', \
- ]
- h2fontset = [ \
- 'Helvetica 14', \
- 'Helvetica-Italic 14', \
- 'Helvetica-Bold 14', \
- 'Courier 14', \
- ]
- h3fontset = [ \
- 'Helvetica 12', \
- 'Helvetica-Italic 12', \
- 'Helvetica-Bold 12', \
- 'Courier 12', \
- ]
-
-
-# Test program -- produces no output but times how long it takes
-# to send a document to a null formatter, exclusive of I/O
-
-def test():
- import fmt
- import time
- import urllib
- if sys.argv[1:]: file = sys.argv[1]
- else: file = 'test.html'
- data = urllib.urlopen(file).read()
- t0 = time.time()
- fmtr = fmt.WritingFormatter(sys.stdout, 79)
- p = FormattingParser(fmtr, NullStylesheet)
- p.feed(data)
- p.close()
- t1 = time.time()
- print
- print '*** Formatting time:', round(t1-t0, 3), 'seconds.'
-
-
-# Test program using stdwin
-
-def testStdwin():
- import stdwin, fmt
- from stdwinevents import *
- if sys.argv[1:]: file = sys.argv[1]
- else: file = 'test.html'
- data = open(file, 'r').read()
- window = stdwin.open('testStdwin')
- b = None
- while 1:
- etype, ewin, edetail = stdwin.getevent()
- if etype == WE_CLOSE:
- break
- if etype == WE_SIZE:
- window.setdocsize(0, 0)
- window.setorigin(0, 0)
- window.change((0, 0), (10000, 30000)) # XXX
- if etype == WE_DRAW:
- if not b:
- b = fmt.StdwinBackEnd(window, 1)
- f = fmt.BaseFormatter(b.d, b)
- p = FormattingParser(f, \
- MacStylesheet)
- p.feed(data)
- p.close()
- b.finish()
- else:
- b.redraw(edetail)
- window.close()
-
-
-# Test program using GL
-
-def testGL():
- import gl, GL, fmt
- if sys.argv[1:]: file = sys.argv[1]
- else: file = 'test.html'
- data = open(file, 'r').read()
- W, H = 600, 600
- gl.foreground()
- gl.prefsize(W, H)
- wid = gl.winopen('testGL')
- gl.ortho2(0, W, H, 0)
- gl.color(GL.WHITE)
- gl.clear()
- gl.color(GL.BLACK)
- b = fmt.GLBackEnd(wid)
- f = fmt.BaseFormatter(b.d, b)
- p = FormattingParser(f, GLStylesheet)
- p.feed(data)
- p.close()
- b.finish()
- #
- import time
- time.sleep(5)
-
-
-if __name__ == '__main__':
- test()
+++ /dev/null
-# A parser for SGML, using the derived class as static DTD.
-
-# XXX This only supports those SGML features used by HTML.
-
-# XXX There should be a way to distinguish between PCDATA (parsed
-# character data -- the normal case), RCDATA (replaceable character
-# data -- only char and entity references and end tags are special)
-# and CDATA (character data -- only end tags are special).
-
-
-import regex
-import string
-
-
-# Regular expressions used for parsing
-
-incomplete = regex.compile( \
- '<!-?\|</[a-zA-Z][a-zA-Z0-9]*[ \t\n]*\|</?\|' + \
- '&#[a-zA-Z0-9]*\|&[a-zA-Z][a-zA-Z0-9]*\|&')
-entityref = regex.compile('&[a-zA-Z][a-zA-Z0-9]*[;.]')
-charref = regex.compile('&#[a-zA-Z0-9]+;')
-starttagopen = regex.compile('<[a-zA-Z]')
-endtag = regex.compile('</[a-zA-Z][a-zA-Z0-9]*[ \t\n]*>')
-commentopen = regex.compile('<!--')
-
-
-# SGML parser base class -- find tags and call handler functions.
-# Usage: p = SGMLParser(); p.feed(data); ...; p.close().
-# The dtd is defined by deriving a class which defines methods
-# with special names to handle tags: start_foo and end_foo to handle
-# <foo> and </foo>, respectively, or do_foo to handle <foo> by itself.
-# (Tags are converted to lower case for this purpose.) The data
-# between tags is passed to the parser by calling self.handle_data()
-# with some data as argument (the data may be split up in arbutrary
-# chunks). Entity references are passed by calling
-# self.handle_entityref() with the entity reference as argument.
-
-class SGMLParser:
-
- # Interface -- initialize and reset this instance
- def __init__(self):
- self.reset()
-
- # Interface -- reset this instance. Loses all unprocessed data
- def reset(self):
- self.rawdata = ''
- self.stack = []
- self.nomoretags = 0
- self.literal = 0
-
- # For derived classes only -- enter literal mode (CDATA) till EOF
- def setnomoretags(self):
- self.nomoretags = self.literal = 1
-
- # For derived classes only -- enter literal mode (CDATA)
- def setliteral(self, *args):
- self.literal = 1
-
- # Interface -- feed some data to the parser. Call this as
- # often as you want, with as little or as much text as you
- # want (may include '\n'). (This just saves the text, all the
- # processing is done by process() or close().)
- def feed(self, data):
- self.rawdata = self.rawdata + data
- self.goahead(0)
-
- # Interface -- handle the remaining data
- def close(self):
- self.goahead(1)
-
- # Internal -- handle data as far as reasonable. May leave state
- # and data to be processed by a subsequent call. If 'end' is
- # true, force handling all data as if followed by EOF marker.
- def goahead(self, end):
- rawdata = self.rawdata
- i = 0
- n = len(rawdata)
- while i < n:
- if self.nomoretags:
- self.handle_data(rawdata[i:n])
- i = n
- break
- j = incomplete.search(rawdata, i)
- if j < 0: j = n
- if i < j: self.handle_data(rawdata[i:j])
- i = j
- if i == n: break
- if rawdata[i] == '<':
- if starttagopen.match(rawdata, i) >= 0:
- if self.literal:
- self.handle_data(rawdata[i])
- i = i+1
- continue
- k = self.parse_starttag(i)
- if k < 0: break
- i = i + k
- continue
- k = endtag.match(rawdata, i)
- if k >= 0:
- j = i+k
- self.parse_endtag(rawdata[i:j])
- i = j
- self.literal = 0
- continue
- if commentopen.match(rawdata, i) >= 0:
- if self.literal:
- self.handle_data(rawdata[i])
- i = i+1
- continue
- k = self.parse_comment(i)
- if k < 0: break
- i = i+k
- continue
- elif rawdata[i] == '&':
- k = charref.match(rawdata, i)
- if k >= 0:
- j = i+k
- self.handle_charref(rawdata[i+2:j-1])
- i = j
- continue
- k = entityref.match(rawdata, i)
- if k >= 0:
- j = i+k
- self.handle_entityref(rawdata[i+1:j-1])
- i = j
- continue
- else:
- raise RuntimeError, 'neither < nor & ??'
- # We get here only if incomplete matches but
- # nothing else
- k = incomplete.match(rawdata, i)
- if k < 0: raise RuntimeError, 'no incomplete match ??'
- j = i+k
- if j == n: break # Really incomplete
- self.handle_data(rawdata[i:j])
- i = j
- # end while
- if end and i < n:
- self.handle_data(rawdata[i:n])
- i = n
- self.rawdata = rawdata[i:]
- # XXX if end: check for empty stack
-
- # Internal -- parse comment, return length or -1 if not ternimated
- def parse_comment(self, i):
- rawdata = self.rawdata
- if rawdata[i:i+4] <> '<!--':
- raise RuntimeError, 'unexpected call to handle_comment'
- try:
- j = string.index(rawdata, '--', i+4)
- except string.index_error:
- return -1
- self.handle_comment(rawdata[i+4: j])
- j = j+2
- n = len(rawdata)
- while j < n and rawdata[j] in ' \t\n': j = j+1
- if j == n: return -1 # Wait for final '>'
- if rawdata[j] == '>':
- j = j+1
- else:
- print '*** comment not terminated with >'
- print repr(rawdata[j-5:j]), '*!*', repr(rawdata[j:j+5])
- return j-i
-
- # Internal -- handle starttag, return length or -1 if not terminated
- def parse_starttag(self, i):
- rawdata = self.rawdata
- try:
- j = string.index(rawdata, '>', i)
- except string.index_error:
- return -1
- # Now parse the data between i+1 and j into a tag and attrs
- attrs = []
- tagfind = regex.compile('[a-zA-Z][a-zA-Z0-9]*')
- attrfind = regex.compile( \
- '[ \t\n]+\([a-zA-Z][a-zA-Z0-9]*\)' + \
- '\([ \t\n]*=[ \t\n]*' + \
- '\(\'[^\']*\';\|"[^"]*"\|[-a-zA-Z0-9./:+*%?!()_#]+\)\)?')
- k = tagfind.match(rawdata, i+1)
- if k < 0:
- raise RuntimeError, 'unexpected call to parse_starttag'
- k = i+1+k
- tag = string.lower(rawdata[i+1:k])
- while k < j:
- l = attrfind.match(rawdata, k)
- if l < 0: break
- regs = attrfind.regs
- a1, b1 = regs[1]
- a2, b2 = regs[2]
- a3, b3 = regs[3]
- attrname = rawdata[a1:b1]
- if '=' in rawdata[k:k+l]:
- attrvalue = rawdata[a3:b3]
- if attrvalue[:1] == '\'' == attrvalue[-1:] or \
- attrvalue[:1] == '"' == attrvalue[-1:]:
- attrvalue = attrvalue[1:-1]
- else:
- attrvalue = ''
- attrs.append(string.lower(attrname), attrvalue)
- k = k + l
- j = j+1
- try:
- method = getattr(self, 'start_' + tag)
- except AttributeError:
- try:
- method = getattr(self, 'do_' + tag)
- except AttributeError:
- self.unknown_starttag(tag, attrs)
- return j-i
- method(attrs)
- return j-i
- self.stack.append(tag)
- method(attrs)
- return j-i
-
- # Internal -- parse endtag
- def parse_endtag(self, data):
- if data[:2] <> '</' or data[-1:] <> '>':
- raise RuntimeError, 'unexpected call to parse_endtag'
- tag = string.lower(string.strip(data[2:-1]))
- try:
- method = getattr(self, 'end_' + tag)
- except AttributeError:
- self.unknown_endtag(tag)
- return
- if self.stack and self.stack[-1] == tag:
- del self.stack[-1]
- else:
- print '*** Unbalanced </' + tag + '>'
- print '*** Stack:', self.stack
- found = None
- for i in range(len(self.stack)):
- if self.stack[i] == tag: found = i
- if found <> None:
- del self.stack[found:]
- method()
-
- # Example -- handle character reference, no need to override
- def handle_charref(self, name):
- try:
- n = string.atoi(name)
- except string.atoi_error:
- self.unknown_charref(name)
- return
- if not 0 <= n <= 255:
- self.unknown_charref(name)
- return
- self.handle_data(chr(n))
-
- # Definition of entities -- derived classes may override
- entitydefs = \
- {'lt': '<', 'gt': '>', 'amp': '&', 'quot': '"', 'apos': '\''}
-
- # Example -- handle entity reference, no need to override
- def handle_entityref(self, name):
- table = self.__class__.entitydefs
- name = string.lower(name)
- if table.has_key(name):
- self.handle_data(table[name])
- else:
- self.unknown_entityref(name)
- return
-
- # Example -- handle data, should be overridden
- def handle_data(self, data):
- pass
-
- # Example -- handle comment, could be overridden
- def handle_comment(self, data):
- pass
-
- # To be overridden -- handlers for unknown objects
- def unknown_starttag(self, tag, attrs): pass
- def unknown_endtag(self, tag): pass
- def unknown_charref(self, ref): pass
- def unknown_entityref(self, ref): pass
-
-
-class TestSGML(SGMLParser):
-
- def handle_data(self, data):
- r = repr(data)
- if len(r) > 72:
- r = r[:35] + '...' + r[-35:]
- print 'data:', r
-
- def handle_comment(self, data):
- r = repr(data)
- if len(r) > 68:
- r = r[:32] + '...' + r[-32:]
- print 'comment:', r
-
- def unknown_starttag(self, tag, attrs):
- print 'start tag: <' + tag,
- for name, value in attrs:
- print name + '=' + '"' + value + '"',
- print '>'
-
- def unknown_endtag(self, tag):
- print 'end tag: </' + tag + '>'
-
- def unknown_entityref(self, ref):
- print '*** unknown entity ref: &' + ref + ';'
-
- def unknown_charref(self, ref):
- print '*** unknown char ref: &#' + ref + ';'
-
-
-def test():
- file = 'test.html'
- f = open(file, 'r')
- x = TestSGML()
- while 1:
- line = f.readline()
- if not line:
- x.close()
- break
- x.feed(line)
-
-
-#test()
+++ /dev/null
-# Tk backend -- unfinished
-
-debug = 0
-
-from fmt import *
-
-class TkFormatter:
-
- def __init__(self, text):
- self.text = text # The text widget to draw in
- self.nospace = 1
- self.blanklines = 0
- self.font = ''
-
- # Methods called by htmllib.FormattingParser:
-
- def setfont(self, font):
- if 1 or debug: print "setfont(%s)" % `font`
- self.font = font
-
- def resetfont(self):
- if debug: print "resetfont()"
- self.font = ''
-
- def flush(self):
- if debug: print "flush()"
- self.needvspace(1)
-
- def setleftindent(self, n):
- if debug: print "setleftindent(%d)" % n
-
- def needvspace(self, n):
- if debug: print "needvspace(%d)" % n
- self.blanklines = max(n, self.blanklines)
- self.nospace = 1
-
- def addword(self, word, nspaces):
- if debug: print "addword(%s, %d)" % (`word`, nspaces)
- if self.nospace and not word:
- return
- if self.blanklines > 0:
- word = '\n'*self.blanklines + word
- self.blanklines = 0
- self.nospace = 0
- here = self.text.index('end')
- self.text.insert('end', word + nspaces*' ')
- if not self.font:
- self.tag_remo
-
- def setjust(self, c):
- if debug: print "setjust(%s)" % `c`
-
- def bgn_anchor(self):
- if debug: print "bgn_anchor()"
-
- def end_anchor(self):
- if debug: print "end_anchor()"
-
- def hrule(self):
- if debug: print "hrule()"
- self.flush()
- self.addword('_'*60, 0)
- self.flush()
+++ /dev/null
-#! /usr/bin/env python
-
-# www1.py -- print the contents of a URL on stdout
-
-import sys
-import urllib
-
-def main():
- if len(sys.argv) != 2 or sys.argv[1][:1] == '-':
- print "Usage:", sys.argv[0], "url"
- sys.exit(2)
- url = sys.argv[1]
- fp = urllib.urlopen(url)
- while 1:
- line = fp.readline()
- if not line: break
- print line,
-
-main()
+++ /dev/null
-#! /usr/bin/env python
-
-# www10.py -- display the contents of a URL in a Text widget
-# - set window title
-# - make window resizable
-# - update display while reading
-# - vertical scroll bar
-# - rewritten as class
-# - editable url entry and reload button
-
-import sys
-import urllib
-from Tkinter import *
-
-def main():
- if len(sys.argv) != 2 or sys.argv[1][:1] == '-':
- print "Usage:", sys.argv[0], "url"
- sys.exit(2)
- url = sys.argv[1]
- viewer = Viewer()
- viewer.load(url)
- viewer.go()
-
-class Viewer:
-
- def __init__(self):
- # Create root window
- self.root = Tk()
- self.root.minsize(1, 1)
-
- # Create topframe for the entry and button
- self.topframe = Frame(self.root)
- self.topframe.pack({'fill': 'x', 'side': 'top'})
-
- # Create a label in front of the entry
- self.urllabel = Label(self.topframe, {'text': 'URL:'})
- self.urllabel.pack({'side': 'left'})
-
- # Create the entry containing the URL
- self.entry = Entry(self.topframe, {'relief': 'sunken'})
- self.entry.pack({'side': 'left', 'fill': 'x', 'expand': 1})
- self.entry.bind('<Return>', self.loadit)
-
- # Create the button
- self.reload = Button(self.topframe,
- {'text': 'Reload',
- 'command': self.reload})
- self.reload.pack({'side': 'right'})
-
- # Create botframe for the text and scrollbar
- self.botframe = Frame(self.root)
- self.botframe.pack({'fill': 'both', 'expand': 1})
-
- # The Scrollbar *must* be created first
- self.vbar = Scrollbar(self.botframe)
- self.vbar.pack({'fill': 'y', 'side': 'right'})
- self.text = Text(self.botframe)
- self.text.pack({'expand': 1, 'fill': 'both', 'side': 'left'})
-
- # Link Text widget and Scrollbar
- self.text['yscrollcommand'] = (self.vbar, 'set')
- self.vbar['command'] = (self.text, 'yview')
-
- self.url = None
-
- def load(self, url):
- # Load a new URL into the window
- fp = urllib.urlopen(url)
-
- self.url = url
-
- self.root.title(url)
-
- self.entry.delete('0', 'end')
- self.entry.insert('end', url)
-
- self.text.delete('1.0', 'end')
-
- while 1:
- line = fp.readline()
- if not line: break
- if line[-2:] == '\r\n': line = line[:-2] + '\n'
- self.text.insert('end', line)
- self.root.update_idletasks()
-
- fp.close()
-
- def go(self):
- # Start Tk main loop
- self.root.mainloop()
-
- def reload(self, *args):
- # Callback for Reload button
- if self.url:
- self.load(self.url)
-
- def loadit(self, *args):
- # Callback for <Return> event in entry
- self.load(self.entry.get())
-
-main()
+++ /dev/null
-#! /usr/bin/env python
-
-# www11.py -- display the contents of a URL in a Text widget
-# - set window title
-# - make window resizable
-# - update display while reading
-# - vertical scroll bar
-# - rewritten as class
-# - editable url entry and reload button
-# - error dialog
-
-import sys
-import urllib
-from Tkinter import *
-import Dialog
-
-def main():
- if len(sys.argv) != 2 or sys.argv[1][:1] == '-':
- print "Usage:", sys.argv[0], "url"
- sys.exit(2)
- url = sys.argv[1]
- viewer = Viewer()
- viewer.load(url)
- viewer.go()
-
-class Viewer:
-
- def __init__(self):
- # Create root window
- self.root = Tk()
- self.root.minsize(1, 1)
-
- # Create topframe for the entry and button
- self.topframe = Frame(self.root)
- self.topframe.pack({'fill': 'x'})
-
- # Create a label in front of the entry
- self.urllabel = Label(self.topframe, {'text': 'URL:'})
- self.urllabel.pack({'side': 'left'})
-
- # Create the entry containing the URL
- self.entry = Entry(self.topframe,
- {'relief': 'sunken', 'border': 2})
- self.entry.pack({'side': 'left', 'fill': 'x', 'expand': 1})
- self.entry.bind('<Return>', self.loadit)
-
- # Create the button
- self.reload = Button(self.topframe,
- {'text': 'Reload',
- 'command': self.reload})
- self.reload.pack({'side': 'right'})
-
- # Create botframe for the text and scrollbar
- self.botframe = Frame(self.root)
- self.botframe.pack({'fill': 'both', 'expand': 1})
-
- # The Scrollbar *must* be created first
- self.vbar = Scrollbar(self.botframe)
- self.vbar.pack({'fill': 'y', 'side': 'right'})
- self.text = Text(self.botframe)
- self.text.pack({'expand': 1, 'fill': 'both', 'side': 'left'})
-
- # Link Text widget and Scrollbar
- self.text['yscrollcommand'] = (self.vbar, 'set')
- self.vbar['command'] = (self.text, 'yview')
-
- self.url = None
-
- def load(self, url):
- # Load a new URL into the window
- fp, url = self.urlopen(url)
- if not fp:
- return
-
- self.url = url
-
- self.root.title(url)
-
- self.entry.delete('0', 'end')
- self.entry.insert('end', url)
-
- self.text.delete('0.0', 'end')
-
- while 1:
- line = fp.readline()
- if not line: break
- if line[-2:] == '\r\n': line = line[:-2] + '\n'
- self.text.insert('end', line)
- self.root.update_idletasks()
-
- fp.close()
-
- def urlopen(self, url):
- # Open a URL --
- # return (fp, url) if successful
- # display dialog and return (None, url) for errors
- try:
- fp = urllib.urlopen(url)
- except IOError, msg:
- import types
- if type(msg) == types.TupleType and len(msg) == 4:
- if msg[1] == 302:
- m = msg[3]
- if m.has_key('location'):
- url = m['location']
- return self.urlopen(url)
- elif m.has_key('uri'):
- url = m['uri']
- return self.urlopen(url)
- self.errordialog(IOError, msg)
- fp = None
- return fp, url
-
- def errordialog(self, exc, msg):
- # Display an error dialog -- return when the user clicks OK
- Dialog.Dialog(self.root, {
- 'text': str(msg),
- 'title': exc,
- 'bitmap': 'error',
- 'default': 0,
- 'strings': ('OK',),
- })
-
- def go(self):
- # Start Tk main loop
- self.root.mainloop()
-
- def reload(self, *args):
- # Callback for Reload button
- if self.url:
- self.load(self.url)
-
- def loadit(self, *args):
- # Callback for <Return> event in entry
- self.load(self.entry.get())
-
-main()
+++ /dev/null
-#! /usr/bin/env python
-
-# www12.py -- display the contents of a URL in a Text widget
-# - set window title
-# - make window resizable
-# - update display while reading
-# - vertical scroll bar
-# - rewritten as class
-# - editable url entry and reload button
-# - error dialog
-# - menu bar; added 'master' option to constructor
-
-import sys
-import urllib
-from Tkinter import *
-import Dialog
-
-def main():
- if len(sys.argv) != 2 or sys.argv[1][:1] == '-':
- print "Usage:", sys.argv[0], "url"
- sys.exit(2)
- url = sys.argv[1]
- tk = Tk()
- tk.withdraw()
- viewer = Viewer(tk)
- viewer.load(url)
- viewer.go()
-
-class Viewer:
-
- def __init__(self, master = None):
- # Create root window
- if master is None:
- self.root = self.master = Tk()
- else:
- self.master = master
- self.root = Toplevel(self.master)
- self.root.minsize(1, 1)
-
- # Create menu bar
- self.mbar = Frame(self.root,
- {'relief': 'raised',
- 'border': 2})
- self.mbar.pack({'fill': 'x'})
-
- # Create File menu
- self.filebutton = Menubutton(self.mbar, {'text': 'File'})
- self.filebutton.pack({'side': 'left'})
-
- self.filemenu = Menu(self.filebutton)
- self.filebutton['menu'] = self.filemenu
-
- # Create Edit menu
- self.editbutton = Menubutton(self.mbar, {'text': 'Edit'})
- self.editbutton.pack({'side': 'left'})
-
- self.editmenu = Menu(self.editbutton)
- self.editbutton['menu'] = self.editmenu
-
- # Magic so you can swipe from one button to the next
- self.mbar.tk_menuBar(self.filebutton, self.editbutton)
-
- # Populate File menu
- self.filemenu.add('command', {'label': 'New',
- 'command': self.new_command})
- self.filemenu.add('command', {'label': 'Open...',
- 'command': self.open_command})
- self.filemenu.add('command', {'label': 'Clone',
- 'command': self.clone_command})
- self.filemenu.add('separator')
- self.filemenu.add('command', {'label': 'Close',
- 'command': self.close_command})
- self.filemenu.add('command', {'label': 'Quit',
- 'command': self.quit_command})
-
- # Populate Edit menu
- pass
-
- # Create topframe for the entry and button
- self.topframe = Frame(self.root)
- self.topframe.pack({'fill': 'x'})
-
- # Create a label in front of the entry
- self.urllabel = Label(self.topframe, {'text': 'URL:'})
- self.urllabel.pack({'side': 'left'})
-
- # Create the entry containing the URL
- self.entry = Entry(self.topframe,
- {'relief': 'sunken', 'border': 2})
- self.entry.pack({'side': 'left', 'fill': 'x', 'expand': 1})
- self.entry.bind('<Return>', self.loadit)
-
- # Create the button
- self.reload = Button(self.topframe,
- {'text': 'Reload',
- 'command': self.reload})
- self.reload.pack({'side': 'right'})
-
- # Create botframe for the text and scrollbar
- self.botframe = Frame(self.root)
- self.botframe.pack({'fill': 'both', 'expand': 1})
-
- # The Scrollbar *must* be created first
- self.vbar = Scrollbar(self.botframe)
- self.vbar.pack({'fill': 'y', 'side': 'right'})
- self.text = Text(self.botframe)
- self.text.pack({'expand': 1, 'fill': 'both', 'side': 'left'})
-
- # Link Text widget and Scrollbar
- self.text['yscrollcommand'] = (self.vbar, 'set')
- self.vbar['command'] = (self.text, 'yview')
-
- self.url = None
-
- def load(self, url):
- # Load a new URL into the window
- fp, url = self.urlopen(url)
- if not fp:
- return
-
- self.url = url
-
- self.root.title(url)
-
- self.entry.delete('0', 'end')
- self.entry.insert('end', url)
-
- self.text.delete('0.0', 'end')
-
- while 1:
- line = fp.readline()
- if not line: break
- if line[-2:] == '\r\n': line = line[:-2] + '\n'
- self.text.insert('end', line)
- self.root.update_idletasks()
-
- fp.close()
-
- def urlopen(self, url):
- # Open a URL --
- # return (fp, url) if successful
- # display dialog and return (None, url) for errors
- try:
- fp = urllib.urlopen(url)
- except IOError, msg:
- import types
- if type(msg) == types.TupleType and len(msg) == 4:
- if msg[1] == 302:
- m = msg[3]
- if m.has_key('location'):
- url = m['location']
- return self.urlopen(url)
- elif m.has_key('uri'):
- url = m['uri']
- return self.urlopen(url)
- self.errordialog(IOError, msg)
- fp = None
- return fp, url
-
- def errordialog(self, exc, msg):
- # Display an error dialog -- return when the user clicks OK
- Dialog.Dialog(self.root, {
- 'text': str(msg),
- 'title': exc,
- 'bitmap': 'error',
- 'default': 0,
- 'strings': ('OK',),
- })
-
- def go(self):
- # Start Tk main loop
- self.root.mainloop()
-
- def reload(self, *args):
- # Callback for Reload button
- if self.url:
- self.load(self.url)
-
- def loadit(self, *args):
- # Callback for <Return> event in entry
- self.load(self.entry.get())
-
- def new_command(self):
- # File/New...
- Viewer(self.master)
-
- def clone_command(self):
- # File/Clone
- v = Viewer(self.master)
- v.load(self.url)
-
- def open_command(self):
- # File/Open...
- print "File/Open...: Not implemented"
-
- def close_command(self):
- # File/Close
- self.destroy()
-
- def quit_command(self):
- # File/Quit
- self.root.quit()
-
- def destroy(self):
- # Destroy this window
- self.root.destroy()
- if self.master is not self.root and not self.master.children:
- self.master.quit()
-
-main()
+++ /dev/null
-#! /usr/bin/env python
-
-# www13.py -- display the contents of a URL in a Text widget
-# - set window title
-# - make window resizable
-# - update display while reading
-# - vertical scroll bar
-# - rewritten as class
-# - editable url entry and reload button
-# - error dialog
-# - menu bar; added 'master' option to constructor
-# - Added HTML parser
-
-import sys
-import urllib
-from Tkinter import *
-import Dialog
-import tkfmt
-import htmllib
-
-def main():
- if len(sys.argv) != 2 or sys.argv[1][:1] == '-':
- print "Usage:", sys.argv[0], "url"
- sys.exit(2)
- url = sys.argv[1]
- tk = Tk()
- tk.withdraw()
- viewer = Viewer(tk)
- viewer.load(url)
- viewer.go()
-
-class Viewer:
-
- def __init__(self, master = None):
- # Create root window
- if master is None:
- self.root = self.master = Tk()
- else:
- self.master = master
- self.root = Toplevel(self.master)
- self.root.minsize(1, 1)
-
- # Create menu bar
- self.mbar = Frame(self.root,
- {'relief': 'raised',
- 'border': 2})
- self.mbar.pack({'fill': 'x'})
-
- # Create File menu
- self.filebutton = Menubutton(self.mbar, {'text': 'File'})
- self.filebutton.pack({'side': 'left'})
-
- self.filemenu = Menu(self.filebutton)
- self.filebutton['menu'] = self.filemenu
-
- # Create Edit menu
- self.editbutton = Menubutton(self.mbar, {'text': 'Edit'})
- self.editbutton.pack({'side': 'left'})
-
- self.editmenu = Menu(self.editbutton)
- self.editbutton['menu'] = self.editmenu
-
- # Magic so you can swipe from one button to the next
- self.mbar.tk_menuBar(self.filebutton, self.editbutton)
-
- # Populate File menu
- self.filemenu.add('command', {'label': 'New',
- 'command': self.new_command})
- self.filemenu.add('command', {'label': 'Open...',
- 'command': self.open_command})
- self.filemenu.add('command', {'label': 'Clone',
- 'command': self.clone_command})
- self.filemenu.add('separator')
- self.filemenu.add('command', {'label': 'Close',
- 'command': self.close_command})
- self.filemenu.add('command', {'label': 'Quit',
- 'command': self.quit_command})
-
- # Populate Edit menu
- pass
-
- # Create topframe for the entry and button
- self.topframe = Frame(self.root)
- self.topframe.pack({'fill': 'x'})
-
- # Create a label in front of the entry
- self.urllabel = Label(self.topframe, {'text': 'URL:'})
- self.urllabel.pack({'side': 'left'})
-
- # Create the entry containing the URL
- self.entry = Entry(self.topframe,
- {'relief': 'sunken', 'border': 2})
- self.entry.pack({'side': 'left', 'fill': 'x', 'expand': 1})
- self.entry.bind('<Return>', self.loadit)
-
- # Create the button
- self.reload = Button(self.topframe,
- {'text': 'Reload',
- 'command': self.reload})
- self.reload.pack({'side': 'right'})
-
- # Create botframe for the text and scrollbar
- self.botframe = Frame(self.root)
- self.botframe.pack({'fill': 'both', 'expand': 1})
-
- # The Scrollbar *must* be created first
- self.vbar = Scrollbar(self.botframe)
- self.vbar.pack({'fill': 'y', 'side': 'right'})
- self.text = Text(self.botframe)
- self.text.pack({'expand': 1, 'fill': 'both', 'side': 'left'})
-
- # Link Text widget and Scrollbar
- self.text['yscrollcommand'] = (self.vbar, 'set')
- self.vbar['command'] = (self.text, 'yview')
-
- self.url = None
-
- def load(self, url):
- # Load a new URL into the window
- fp, url = self.urlopen(url)
- if not fp:
- return
-
- self.url = url
-
- self.root.title(url)
-
- self.entry.delete('0', 'end')
- self.entry.insert('end', url)
-
- self.text.delete('0.0', 'end')
-
- f = tkfmt.TkFormatter(self.text)
- p = htmllib.FormattingParser(f, htmllib.X11Stylesheet)
-
- while 1:
- line = fp.readline()
- if not line: break
- if line[-2:] == '\r\n': line = line[:-2] + '\n'
- p.feed(line)
- self.root.update_idletasks()
-
- p.close()
-
- fp.close()
-
- def urlopen(self, url):
- # Open a URL --
- # return (fp, url) if successful
- # display dialog and return (None, url) for errors
- try:
- fp = urllib.urlopen(url)
- except IOError, msg:
- import types
- if type(msg) == types.TupleType and len(msg) == 4:
- if msg[1] == 302:
- m = msg[3]
- if m.has_key('location'):
- url = m['location']
- return self.urlopen(url)
- elif m.has_key('uri'):
- url = m['uri']
- return self.urlopen(url)
- self.errordialog(IOError, msg)
- fp = None
- return fp, url
-
- def errordialog(self, exc, msg):
- # Display an error dialog -- return when the user clicks OK
- Dialog.Dialog(self.root, {
- 'text': str(msg),
- 'title': exc,
- 'bitmap': 'error',
- 'default': 0,
- 'strings': ('OK',),
- })
-
- def go(self):
- # Start Tk main loop
- self.root.mainloop()
-
- def reload(self, *args):
- # Callback for Reload button
- if self.url:
- self.load(self.url)
-
- def loadit(self, *args):
- # Callback for <Return> event in entry
- self.load(self.entry.get())
-
- def new_command(self):
- # File/New...
- Viewer(self.master)
-
- def clone_command(self):
- # File/Clone
- v = Viewer(self.master)
- v.load(self.url)
-
- def open_command(self):
- # File/Open...
- print "File/Open...: Not implemented"
-
- def close_command(self):
- # File/Close
- self.destroy()
-
- def quit_command(self):
- # File/Quit
- self.root.quit()
-
- def destroy(self):
- # Destroy this window
- self.root.destroy()
- if self.master is not self.root and not self.master.children:
- self.master.quit()
-
-main()
+++ /dev/null
-#! /usr/bin/env python
-
-# www2.py -- print the contents of a URL on stdout
-# - error checking
-
-import sys
-import urllib
-import types
-
-def main():
- if len(sys.argv) != 2 or sys.argv[1][:1] == '-':
- print "Usage:", sys.argv[0], "url"
- sys.exit(2)
- url = sys.argv[1]
- fp = my_urlopen(url)
- while 1:
- line = fp.readline()
- if not line: break
- sys.stdout.write(line)
-
-def my_urlopen(url):
- try:
- fp = urllib.urlopen(url)
- return fp
- except IOError, msg:
- if type(msg) == types.TupleType and len(msg) == 4:
- print msg[:3]
- m = msg[3]
- for line in m.headers:
- sys.stdout.write(line)
- else:
- print msg
- sys.exit(1)
-
-main()
+++ /dev/null
-#! /usr/bin/env python
-
-# www3.py -- print the contents of a URL on stdout
-# - error checking
-# - Error 302 handling
-
-import sys
-import urllib
-import types
-
-def main():
- if len(sys.argv) != 2 or sys.argv[1][:1] == '-':
- print "Usage:", sys.argv[0], "url"
- sys.exit(2)
- url = sys.argv[1]
- fp = my_urlopen(url)
- while 1:
- line = fp.readline()
- if not line: break
- sys.stdout.write(line)
-
-def my_urlopen(url):
- try:
- fp = urllib.urlopen(url)
- return fp
- except IOError, msg:
- if type(msg) == types.TupleType and len(msg) == 4:
- m = msg[3]
- if msg[1] == 302:
- if m.has_key('location'):
- url = m['location']
- print 'Location:', url
- return my_urlopen(url)
- elif m.has_key('uri'):
- url = m['uri']
- print 'URI:', url
- return my_urlopen(url)
- print '(Error 302 w/o Location/URI header???)'
- print msg[:3]
- for line in m.headers:
- sys.stdout.write(line)
- else:
- print msg
- sys.exit(1)
-
-main()
+++ /dev/null
-#! /usr/bin/env python
-
-# www4.py -- display the contents of a URL in a Text widget
-
-import sys
-import urllib
-from Tkinter import *
-
-def main():
- if len(sys.argv) != 2 or sys.argv[1][:1] == '-':
- print "Usage:", sys.argv[0], "url"
- sys.exit(2)
- url = sys.argv[1]
- fp = urllib.urlopen(url)
-
- text = Text() # Create text widget
- text.pack() # Realize it
-
- while 1:
- line = fp.readline()
- if not line: break
- text.insert('end', line) # Append line to text widget
-
- text.mainloop() # Start Tk main loop
-
-main()
+++ /dev/null
-#! /usr/bin/env python
-
-# www5.py -- display the contents of a URL in a Text widget
-# - set window title
-
-import sys
-import urllib
-from Tkinter import *
-
-def main():
- if len(sys.argv) != 2 or sys.argv[1][:1] == '-':
- print "Usage:", sys.argv[0], "url"
- sys.exit(2)
- url = sys.argv[1]
- fp = urllib.urlopen(url)
-
- root = Tk()
- root.title(url) # Set window manager title
- text = Text(root)
- text.pack()
-
- while 1:
- line = fp.readline()
- if not line: break
- text.insert('end', line)
-
- text.mainloop()
-
-main()
+++ /dev/null
-#! /usr/bin/env python
-
-# www6.py -- display the contents of a URL in a Text widget
-# - set window title
-# - make window resizable
-
-import sys
-import urllib
-from Tkinter import *
-
-def main():
- if len(sys.argv) != 2 or sys.argv[1][:1] == '-':
- print "Usage:", sys.argv[0], "url"
- sys.exit(2)
- url = sys.argv[1]
- fp = urllib.urlopen(url)
-
- root = Tk()
- root.title(url)
- root.minsize(1, 1) # Set minimum size
- text = Text(root)
- text.pack({'expand': 1, 'fill': 'both'}) # Expand into available space
-
- while 1:
- line = fp.readline()
- if not line: break
- text.insert('end', line)
-
- root.mainloop() # Start Tk main loop (for root!)
-
-main()
+++ /dev/null
-#! /usr/bin/env python
-
-# www7.py -- display the contents of a URL in a Text widget
-# - set window title
-# - make window resizable
-# - update display while reading
-
-import sys
-import urllib
-from Tkinter import *
-
-def main():
- if len(sys.argv) != 2 or sys.argv[1][:1] == '-':
- print "Usage:", sys.argv[0], "url"
- sys.exit(2)
- url = sys.argv[1]
- fp = urllib.urlopen(url)
-
- root = Tk()
- root.title(url)
- root.minsize(1, 1)
- text = Text(root)
- text.pack({'expand': 1, 'fill': 'both'})
-
- while 1:
- line = fp.readline()
- if not line: break
- text.insert('end', line)
- root.update_idletasks() # Update display
-
- root.mainloop()
-
-main()
+++ /dev/null
-#! /usr/bin/env python
-
-# www8.py -- display the contents of a URL in a Text widget
-# - set window title
-# - make window resizable
-# - update display while reading
-# - vertical scroll bar
-
-import sys
-import urllib
-from Tkinter import *
-
-def main():
- if len(sys.argv) != 2 or sys.argv[1][:1] == '-':
- print "Usage:", sys.argv[0], "url"
- sys.exit(2)
- url = sys.argv[1]
- fp = urllib.urlopen(url)
-
- # Create root window
- root = Tk()
- root.title(url)
- root.minsize(1, 1)
-
- # The Scrollbar *must* be created first -- this is magic for me :-(
- vbar = Scrollbar(root)
- vbar.pack({'fill': 'y', 'side': 'right'})
- text = Text(root, {'yscrollcommand': (vbar, 'set')})
- text.pack({'expand': 1, 'fill': 'both', 'side': 'left'})
-
- # Link Text widget and Scrollbar -- this is magic for you :-)
- ##text['yscrollcommand'] = (vbar, 'set')
- vbar['command'] = (text, 'yview')
-
- while 1:
- line = fp.readline()
- if not line: break
- text.insert('end', line)
- root.update_idletasks()
-
- root.mainloop()
-
-main()
+++ /dev/null
-#! /usr/bin/env python
-
-# www9.py -- display the contents of a URL in a Text widget
-# - set window title
-# - make window resizable
-# - update display while reading
-# - vertical scroll bar
-# - rewritten as class
-
-import sys
-import urllib
-from Tkinter import *
-
-def main():
- if len(sys.argv) != 2 or sys.argv[1][:1] == '-':
- print "Usage:", sys.argv[0], "url"
- sys.exit(2)
- url = sys.argv[1]
- viewer = Viewer()
- viewer.load(url)
- viewer.go()
-
-class Viewer:
-
- def __init__(self):
- # Create root window
- self.root = Tk()
- self.root.minsize(1, 1)
-
- # The Scrollbar *must* be created first
- self.vbar = Scrollbar(self.root)
- self.vbar.pack({'fill': 'y', 'side': 'right'})
- self.text = Text(self.root)
- self.text.pack({'expand': 1, 'fill': 'both', 'side': 'left'})
-
- # Link Text widget and Scrollbar
- self.text['yscrollcommand'] = (self.vbar, 'set')
- self.vbar['command'] = (self.text, 'yview')
-
- def load(self, url):
- # Load a new URL into the window
- fp = urllib.urlopen(url)
-
- self.root.title(url)
-
- self.text.delete('0.0', 'end')
-
- while 1:
- line = fp.readline()
- if not line: break
- self.text.insert('end', line)
- self.root.update_idletasks()
-
- fp.close()
-
- def go(self):
- # Start Tk main loop
- self.root.mainloop()
-
-main()
projects / python / commitdiff