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Final fix of issue 2843 for any number of references.

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svn: r12370
This commit is contained in:
Peter Landgren 2009-03-21 08:10:09 +00:00
parent cab9de8d62
commit 71139e3522
1 changed files with 22 additions and 11 deletions
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33
src/ReportBase/_Bibliography.py
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@ -23,7 +23,7 @@
Contain and organize bibliographic information. Contain and organize bibliographic information.
""" """
import string import string
import math
from gen.lib import SourceRef as SourceRef from gen.lib import SourceRef as SourceRef
class Citation: class Citation:
@ -74,17 +74,28 @@ class Citation:
@return: The key of the added reference among all the references. @return: The key of the added reference among all the references.
@rtype: char @rtype: char
""" """
first_letter = ''
second_letter = ''
letter_count = len(string.lowercase) letter_count = len(string.lowercase)
ref_count = len(self.__ref_list) ref_count = len(self.__ref_list)
if ref_count > letter_count: x_ref_count = ref_count
# If there are more than 26 references, we need to use two # Return "a" for ref_count = 0, otherwise log(0) does not work
# characters to uniquely identify them all. if ref_count == 0:
first_letter = string.lowercase[ ref_count / letter_count ] self.__ref_list.append(("a", source_ref))
second_letter = string.lowercase[ ref_count % letter_count ] return "a"
last_letter = string.lowercase[ ref_count % letter_count ]
key = first_letter + second_letter key = ""
# Calculate prek number of digits.
number_of_letters = int(math.log(float(ref_count),float(letter_count)))+1
# Exclude index for number_of_letters-1
for n in range(1, number_of_letters-1):
ref_count = ref_count - pow(letter_count, n)
# Adjust number_of_letters for new index
number_of_letters = int(math.log(float(ref_count),float(letter_count))) +1
for n in range(1, number_of_letters):
x_ref_count = x_ref_count - pow(letter_count, n)
for letter in range(1, number_of_letters):
index = x_ref_count / pow(letter_count, letter) % letter_count
key += string.lowercase[ index ]
key = key + last_letter
self.__ref_list.append((key, source_ref)) self.__ref_list.append((key, source_ref))
return key return key
@ -228,4 +239,4 @@ class Bibliography:
if notehandle not in nl2: if notehandle not in nl2:
return False return False
# Can't find anything different. They must be equal. # Can't find anything different. They must be equal.
return True return True