def apply_text_layout(text, attr, ls, maxcol):
t = []
a = []
c = []
class AttrWalk:
pass
aw = AttrWalk
aw.k = 0 # counter for moving through elements of a
aw.off = 0 # current offset into text of attr[ak]
def arange( start_offs, end_offs ):
"""Return an attribute list for the range of text specified."""
if start_offs < aw.off:
aw.k = 0
aw.off = 0
o = []
while aw.off < end_offs:
if len(attr)<=aw.k:
# run out of attributes
o.append((None,end_offs-max(start_offs,aw.off)))
break
at,run = attr[aw.k]
if aw.off+run <= start_offs:
# move forward through attr to find start_offs
aw.k += 1
aw.off += run
continue
if end_offs <= aw.off+run:
o.append((at, end_offs-max(start_offs,aw.off)))
break
o.append((at, aw.off+run-max(start_offs, aw.off)))
aw.k += 1
aw.off += run
return o
for line_layout in ls:
# trim the line to fit within maxcol
line_layout = trim_line( line_layout, text, 0, maxcol )
line = []
linea = []
linec = []
def attrrange( start_offs, end_offs, destw ):
"""
Add attributes based on attributes between
start_offs and end_offs.
"""
if start_offs == end_offs:
[(at,run)] = arange(start_offs,end_offs)
rle_append_modify( linea, ( at, destw ))
return
if destw == end_offs-start_offs:
for at, run in arange(start_offs,end_offs):
rle_append_modify( linea, ( at, run ))
return
# encoded version has different width
o = start_offs
for at, run in arange(start_offs, end_offs):
if o+run == end_offs:
rle_append_modify( linea, ( at, destw ))
return
tseg = text[o:o+run]
tseg, cs = apply_target_encoding( tseg )
segw = rle_len(cs)
rle_append_modify( linea, ( at, segw ))
o += run
destw -= segw
for seg in line_layout:
#if seg is None: assert 0, ls
s = LayoutSegment(seg)
if s.end:
tseg, cs = apply_target_encoding(
text[s.offs:s.end])
line.append(tseg)
attrrange(s.offs, s.end, rle_len(cs))
rle_join_modify( linec, cs )
elif s.text:
tseg, cs = apply_target_encoding( s.text )
line.append(tseg)
attrrange( s.offs, s.offs, len(tseg) )
rle_join_modify( linec, cs )
elif s.offs:
if s.sc:
line.append(bytes().rjust(s.sc))
attrrange( s.offs, s.offs, s.sc )
else:
line.append(bytes().rjust(s.sc))
linea.append((None, s.sc))
linec.append((None, s.sc))
t.append(bytes().join(line))
a.append(linea)
c.append(linec)
return TextCanvas(t, a, c, maxcol=maxcol)
def apply_text_layout(text, attr, ls, maxcol):
t = []
a = []
c = []
class AttrWalk:
pass
aw = AttrWalk
aw.k = 0 # counter for moving through elements of a
aw.off = 0 # current offset into text of attr[ak]
def arange( start_offs, end_offs ):
"""Return an attribute list for the range of text specified."""
if start_offs < aw.off:
aw.k = 0
aw.off = 0
o = []
while aw.off < end_offs:
if len(attr)<=aw.k:
# run out of attributes
o.append((None,end_offs-max(start_offs,aw.off)))
break
at,run = attr[aw.k]
if aw.off+run <= start_offs:
# move forward through attr to find start_offs
aw.k += 1
aw.off += run
continue
if end_offs <= aw.off+run:
o.append((at, end_offs-max(start_offs,aw.off)))
break
o.append((at, aw.off+run-max(start_offs, aw.off)))
aw.k += 1
aw.off += run
return o
for line_layout in ls:
# trim the line to fit within maxcol
line_layout = trim_line( line_layout, text, 0, maxcol )
line = []
linea = []
linec = []
def attrrange( start_offs, end_offs, destw ):
"""
Add attributes based on attributes between
start_offs and end_offs.
"""
if start_offs == end_offs:
[(at,run)] = arange(start_offs,end_offs)
rle_append_modify( linea, ( at, destw ))
return
if destw == end_offs-start_offs:
for at, run in arange(start_offs,end_offs):
rle_append_modify( linea, ( at, run ))
return
# encoded version has different width
o = start_offs
for at, run in arange(start_offs, end_offs):
if o+run == end_offs:
rle_append_modify( linea, ( at, destw ))
return
tseg = text[o:o+run]
tseg, cs = apply_target_encoding( tseg )
segw = rle_len(cs)
rle_append_modify( linea, ( at, segw ))
o += run
destw -= segw
for seg in line_layout:
#if seg is None: assert 0, ls
s = LayoutSegment(seg)
if s.end:
tseg, cs = apply_target_encoding(
text[s.offs:s.end])
line.append(tseg)
attrrange(s.offs, s.end, rle_len(cs))
rle_join_modify( linec, cs )
elif s.text:
tseg, cs = apply_target_encoding( s.text )
line.append(tseg)
attrrange( s.offs, s.offs, len(tseg) )
rle_join_modify( linec, cs )
elif s.offs:
if s.sc:
line.append(bytes().rjust(s.sc))
attrrange( s.offs, s.offs, s.sc )
else:
line.append(bytes().rjust(s.sc))
linea.append((None, s.sc))
linec.append((None, s.sc))
t.append(bytes().join(line))
a.append(linea)
c.append(linec)
return TextCanvas(t, a, c, maxcol=maxcol)