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Fix preamble-code removal in lyx2lyx. Do some optimizations.

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Fix failure of revert_dashes() found by lyx2lyx ctests
using an efficient function to find a given sequence of lines
in a list of lines.

Some optimizations using Python idioms instead of C-like code.
This commit is contained in:
Günter Milde 2018-01-21 19:55:27 +01:00
parent 5fce313ffc
commit 8e825de4b2
3 changed files with 89 additions and 43 deletions
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32
lib/lyx2lyx/lyx_2_2.py
View File

@ -29,14 +29,14 @@ import sys, os
# find_token_backwards, is_in_inset, get_value, get_quoted_value, \
# del_token, check_token, get_option_value
from lyx2lyx_tools import add_to_preamble, put_cmd_in_ert, get_ert, lyx2latex, \
lyx2verbatim, length_in_bp, convert_info_insets
# insert_to_preamble, latex_length, revert_flex_inset, \
# revert_font_attrs, hex2ratio, str2bool
from lyx2lyx_tools import (add_to_preamble, put_cmd_in_ert, get_ert,
lyx2latex, lyx2verbatim, length_in_bp, convert_info_insets)
# insert_to_preamble, latex_length, revert_flex_inset,
# revert_font_attrs, hex2ratio, str2bool
from parser_tools import find_token, find_token_backwards, find_re, \
find_end_of_inset, find_end_of_layout, find_nonempty_line, \
get_containing_layout, get_value, check_token
from parser_tools import (find_end_of_inset, find_end_of_layout,
find_nonempty_line, find_re, find_slice, find_token, find_token_backwards,
get_containing_layout, get_value, check_token)
####################################################################
# Private helper functions
@ -706,24 +706,20 @@ def revert_dashes(document):
Remove preamble code from 2.3->2.2 conversion.
"""
# Remove preamble code from 2.3->2.2 conversion:
for i, line in enumerate(document.preamble):
if (line == '% Added by lyx2lyx' and
document.preamble[i+1] == r'\renewcommand{\textendash}{--}' and
document.preamble[i+2] == r'\renewcommand{\textemdash}{---}'):
del document.preamble[i:i+3]
break
dash_renew_lines = find_slice(document.preamble,
['% Added by lyx2lyx',
r'\renewcommand{\textendash}{--}',
r'\renewcommand{\textemdash}{---}'])
del(document.preamble[dash_renew_lines])
# Prevent ligation of hyphens:
i = 0
while i < len(document.body)-1:
# increment i, skip some insets (cf. convert_dashes)
i = _dashes_next_line(document, i)
line = document.body[i]
while "--" in line:
if "--" in line:
line = line.replace("--", "-\\SpecialChar \\textcompwordmark{}\n-")
parts = line.split('\n')
if len(parts) > 1:
document.body[i:i+1] = parts
i += len(parts)-1
document.body[i:i+1] = line.split('\n')
# Convert \twohyphens and \threehyphens:
i = 0
while i < len(document.body):

38
lib/lyx2lyx/lyx_2_3.py
View File

@ -24,9 +24,10 @@ import sys, os
# Uncomment only what you need to import, please.
from parser_tools import find_end_of, find_token_backwards, find_end_of_layout, \
find_token, find_end_of_inset, get_value, get_bool_value, \
get_containing_layout, get_quoted_value, del_token, find_re
from parser_tools import del_token, find_end_of, find_end_of_layout, \
find_end_of_inset, find_re, find_slice, find_token, \
find_token_backwards, get_containing_layout, \
get_bool_value, get_value, get_quoted_value
# find_tokens, find_token_exact, is_in_inset, \
# check_token, get_option_value
@ -1843,17 +1844,18 @@ def revert_chapterbib(document):
def convert_dashligatures(document):
"Set 'use_dash_ligatures' according to content."
use_dash_ligatures = None
# eventually remove preamble code from 2.3->2.2 conversion:
for i, line in enumerate(document.preamble):
if i > 1 and line == r'\renewcommand{\textemdash}{---}':
if (document.preamble[i-1] == r'\renewcommand{\textendash}{--}'
and document.preamble[i-2] == '% Added by lyx2lyx'):
del document.preamble[i-2:i+1]
use_dash_ligatures = True
# Eventually remove preamble code from 2.3->2.2 conversion:
dash_renew_lines = find_slice(document.preamble,
['% Added by lyx2lyx',
r'\renewcommand{\textendash}{--}',
r'\renewcommand{\textemdash}{---}'])
del(document.preamble[dash_renew_lines])
use_dash_ligatures = bool(dash_renew_lines.stop)
if use_dash_ligatures is None:
# Look for dashes:
# (Documents by LyX 2.1 or older have "\twohyphens\n" or "\threehyphens\n"
# as interim representation for dash ligatures in 2.2.)
# as interim representation for dash ligatures)
has_literal_dashes = False
has_ligature_dashes = False
j = 0
@ -1882,9 +1884,8 @@ def convert_dashligatures(document):
flags=re.UNICODE):
has_literal_dashes = True
# ligature dash followed by word or no-break space on next line:
if re.search(u"(\\\\twohyphens|\\\\threehyphens)", line,
flags=re.UNICODE) and re.match(u"[\w\u00A0]",
document.body[i+1], flags=re.UNICODE):
if (re.search(r"(\\twohyphens|\\threehyphens)", line) and
re.match(u"[\w\u00A0]", document.body[i+1], flags=re.UNICODE)):
has_ligature_dashes = True
if has_literal_dashes and has_ligature_dashes:
# TODO: insert a warning note in the document?
@ -1920,11 +1921,10 @@ def revert_dashligatures(document):
if (i < j) or line.startswith("\\labelwidthstring"):
new_body.append(line)
continue
words = line.split()
if (len(words) > 1 and words[0] == "\\begin_inset"
and (words[1] in ["CommandInset", "ERT", "External", "Formula",
"FormulaMacro", "Graphics", "IPA", "listings"]
or ' '.join(words[1:]) == "Flex Code")):
if (line.startswith("\\begin_inset ") and
line[13:].split()[0] in ["CommandInset", "ERT", "External",
"Formula", "FormulaMacro", "Graphics", "IPA", "listings"]
or line == "\\begin_inset Flex Code"):
j = find_end_of_inset(document.body, i)
if j == -1:
document.warning("Malformed LyX document: Can't find end of "

60
lib/lyx2lyx/parser_tools.py
View File

@ -18,7 +18,7 @@
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
'''
"""
This module offers several free functions to help parse lines.
More documentaton is below, but here is a quick guide to what
they do. Optional arguments are marked by brackets.
@ -152,18 +152,68 @@ is_nonempty_line(line):
count_pars_in_inset(lines, i):
Counts the paragraphs inside an inset.
'''
"""
import re
# Fast search in lists
def find_slice(l, sl, start = 0, stop = None):
"""Return position of first occurence of sequence `sl` in list `l`
as a `slice` object.
>>> find_slice([1, 2, 3, 1, 1, 2], (1, 2))
slice(0, 2, None)
The return value can be used to delete or substitute the sub-list:
>>> l = [1, 0, 1, 1, 1, 2]
>>> s = find_slice(l, [0, 1, 1])
>>> del(l[s]); l
[1, 1, 2]
>>> s = find_slice(l, (1, 2))
>>> l[s] = [3]; l
[1, 3]
The start argument works similar to list.index()
>>> find_slice([1, 2, 3, 1, 1 ,2], (1, 2), start = 1)
slice(4, 6, None)
Use the `stop` attribute of the returned `slice` to test for success:
>>> s1 = find_slice([2, 3, 1], (3, 1))
>>> s2 = find_slice([2, 3, 1], (2, 1))
>>> if s1.stop and not s2.stop:
... print "wow"
wow
"""
stop = stop or len(l)
N = len(sl) # lenght of sub-list
try:
while True:
for j, value in enumerate(sl):
i = l.index(value, start, stop)
if j and i != start:
start = i-j
break
start = i +1
else:
return slice(i+1-N, i+1)
except ValueError: # sub list `sl` not found
return slice(0, 0)
# Utilities for one line
def check_token(line, token):
""" check_token(line, token) -> bool
Return True if token is present in line and is the first element
else returns False."""
else returns False.
return line[:len(token)] == token
Deprecated. Use line.startswith(token).
"""
return line.startswith(token)
def is_nonempty_line(line):
@ -171,7 +221,7 @@ def is_nonempty_line(line):
Return False if line is either empty or it has only whitespaces,
else return True."""
return line != " "*len(line)
return bool(line.strip())
# Utilities for a list of lines