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Add two new routines to parser_tools. Somewhere along the way, I wished

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I had these. I'm not going to go back and change more code, but these
will be worth having later.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@36120 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Richard Heck 2010-11-05 16:04:17 +00:00
parent cd544b25d3
commit 665c9d78d5
1 changed files with 56 additions and 6 deletions
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62
lib/lyx2lyx/parser_tools.py
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@ -44,6 +44,9 @@ def find_token(lines, token, start, end = 0, exact = False):
Return the lowest line where token is found, and is the first
element, in lines[start, end].
If exact is True (default is False), then differences in
whitespace are ignored.
Return -1 on failure."""
if end == 0 or end > len(lines):
@ -243,13 +246,20 @@ def find_end_of_layout(lines, i):
return find_end_of(lines, i, "\\begin_layout", "\\end_layout")
# checks if line i is in the given inset
# if so, returns starting and ending lines
# otherwise, returns False
# Example:
# is_in_inset(document.body, i, "\\begin_inset Tabular")
# returns False unless i is within a table.
def is_in_inset(lines, i, inset):
'''
Checks if line i is in an inset of the given type.
If so, returns starting and ending lines.
Otherwise, returns False.
Example:
is_in_inset(document.body, i, "\\begin_inset Tabular")
returns False unless i is within a table. If it is, then
it returns the line on which the table begins and the one
on which it ends. Note that this pair will evaulate to
boolean True, so
if is_in_inset(...):
will do what you expect.
'''
defval = (-1, -1)
stins = find_token_backwards(lines, inset, i)
if stins == -1:
@ -259,3 +269,43 @@ def is_in_inset(lines, i, inset):
if endins < i:
return defval
return (stins, endins)
def get_containing_inset(lines, i):
'''
Finds out what kind of inset line i is within. Returns a
list containing (i) what follows \begin_inset on the the line
on which the inset begins, plus the starting and ending line.
Returns False on any kind of error or if it isn't in an inset.
'''
stins = find_token_backwards(lines, i, "\\begin_inset")
if stins == -1:
return False
endins = find_end_of_inset(lines, stins)
if endins < i:
return False
inset = get_value(lines, "\\begin_inset", stins)
if inset == "":
# shouldn't happen
return False
return (inset, stins, endins)
def get_containing_layout(lines, i):
'''
Finds out what kind of layout line i is within. Returns a
list containing (i) what follows \begin_layout on the the line
on which the layout begins, plus the starting and ending line.
Returns False on any kind of error.
'''
stins = find_token_backwards(lines, i, "\\begin_layout")
if stins == -1:
return False
endins = find_end_of_layout(lines, stins)
if endins < i:
return False
lay = get_value(lines, "\\begin_layout", stins)
if lay == "":
# shouldn't happen
return False
return (lay, stins, endins)