Engine for LaTeX songbooks http://www.patacrep.com
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

132 lines
4.0 KiB

#!/usr/bin/env python
# -*- coding: utf-8 -*-
def split_author_names(string):
"""Split author between first and last name.
The last space separates first and last name, but spaces following a
backslash or a command are not separators.
Examples:
- Edgar Allan Poe => Poe, Edgar Allan
- Edgar Allan \emph {Poe} => \emph {Poe}, Edgar Allan
- The Rolling\ Stones => Rolling\ Stones, The
- The {Rolling Stones} => {Rolling Stones}, The
"""
ignore_space = False
last_space = index = 0
brace_count = 0
for char in string:
index += 1
if brace_count == 0:
if char == "\\":
ignore_space = True
elif not char.isalnum() and ignore_space:
ignore_space = False
elif char == " ":
last_space = index
if char == "}":
brace_count += 1
if char == "{":
brace_count -= 1
return string[:last_space], string[last_space:]
def split_sep_author(string, sep):
authors = []
match = sep.match(string)
while match:
authors.append(match.group(2))
string = match.group(1)
match = sep.match(string)
authors.append(string)
return authors
def processauthors(authors_string, after = [], ignore = [], sep = []):
"""Return a list of authors
For example, we are processing:
# processauthors(
# "Lyrics by William Blake (from Milton, 1808), music by Hubert Parry (1916), and sung by The Royal\ Choir~of~Nowhere (just here to show you how processing is done)",
# after = ["by"],
# ignore = ["anonymous"],
# sep = ["and"]
# )
The "authors_string" string is processed as:
1) First, parenthesis (and its content) are removed.
# "Lyrics by William Blake, music by Hubert Parry, and sung by The Royal\ Choir~of~Nowhere"
2) String is split, separators being comma and words from "sep".
# ["Lyrics by William Blake", "music by Hubert Parry", "sung by The Royal\ Choir~of~Nowhere"]
3) Everything before words in "after" is removed.
# ["William Blake", "Hubert Parry", "The Royal\ Choir~of~Nowhere"]
4) Strings containing words of "ignore" are dropped.
# ["William Blake", "Hubert Parry", The Royal\ Choir~of~Nowhere"]
5) First names are moved after last names
# ["Blake, William", "Parry, Hubert", Royal\ Choir~of~Nowhere, The"]
"""
# Removing parentheses
opening = 0
dest = ""
for char in authors_string:
if char == '(':
opening += 1
elif char == ')' and opening > 0:
opening -= 1
elif opening == 0:
dest += char
authors_string = dest
# Splitting strings
authors_list = [authors_string]
for sepword in sep:
dest = []
for author in authors_list:
dest.extend(split_sep_author(author, sepword))
authors_list = dest
# Removing stuff before "after"
dest = []
for author in authors_list:
for afterword in after:
match = afterword.match(author)
if match:
author = match.group(1)
break
dest.append(author)
authors_list = dest
# Ignoring ignored authors
dest = []
for author in authors_list:
ignored = False
for ignoreword in ignore:
if author.find(str(ignoreword)) != -1:
ignored = True
break
if not ignored:
dest.append(author)
authors_list = dest
# Cleaning: removing empty authors and unnecessary spaces
authors_list = [author.lstrip() for author in authors_list if author.lstrip()]
# Moving first names after last names
dest = []
for author in authors_list:
first, last = split_author_names(author)
if first:
dest.append("%(last)s, %(first)s" % {
'first': first.lstrip(),
'last': last.lstrip(),
})
else:
dest.append(last.lstrip())
authors_list = dest
return authors_list