# -*- encoding: utf-8 -*-
from __future__ import unicode_literals
from __future__ import absolute_import
from __future__ import print_function
import re
POS_MARK = {
'特殊': '*',
'動詞': 'v',
'形容詞': 'j',
'判定詞': 'c',
'助動詞': 'x',
'名詞': 'n',
'固有名詞': 'N',
'人名': 'J',
'地名': 'C',
'組織名': 'A',
'指示詞': 'd',
'副詞': 'a',
'助詞': 'p',
'接続詞': 'c',
'連体詞': 'm',
'感動詞': '!',
'接頭辞': 'p',
'接尾辞': 's',
'未定義語': '?'
}
[docs]def draw_tree(leaves, fh=None, show_pos=True):
""" 構文木を指定された fh に出力する．指定を省略した場合は，標準出力に出力される． """
if fh:
fh.write(sprint_tree(leaves, show_pos=show_pos))
# 指定なしの場合は標準出力を用いる．
else:
print(sprint_tree(leaves, show_pos=show_pos), end=' ')
[docs]def sprint_tree(leaves, show_pos=True):
""" 構文木を文字列で返す． """
limit = len(leaves)
item = [[''] * limit for _ in range(limit)]
active_column = [0] * limit
limit -= 1
for i in range(limit):
para_row = 1 if leaves[i].dpndtype == "P" else 0
for j in range(i + 1, limit + 1):
if j < leaves[i].parent_id:
if active_column[j] == 2:
item[i][j] = "╋" if para_row else "╂"
elif active_column[j] == 1:
item[i][j] = "┿" if para_row else "┼"
else:
item[i][j] = "━" if para_row else "─"
elif j == leaves[i].parent_id:
if leaves[i].dpndtype == "P":
item[i][j] = "Ｐ"
elif leaves[i].dpndtype == "I":
item[i][j] = "Ｉ"
elif leaves[i].dpndtype == "A":
item[i][j] = "Ａ"
else:
if active_column[j] == 2:
item[i][j] = "┨"
elif active_column[j] == 1:
item[i][j] = "┤"
else:
item[i][j] = "┐"
if active_column[j] == 2:
# すでにＰからの太線があればそのまま
pass
elif para_row:
active_column[j] = 2
else:
active_column[j] = 1
else:
if active_column[j] == 2:
item[i][j] = "┃"
elif active_column[j] == 1:
item[i][j] = "│"
else:
item[i][j] = " "
lines = [_leaf_string(leaf, show_pos) for leaf in leaves]
for i in range(limit):
for j in range(i + 1, limit + 1):
lines[i] += item[i][j]
max_length = max([_str_real_length(line) for line in lines])
buf = ""
for i in range(limit + 1):
diff = max_length - _str_real_length(lines[i])
buf += " " * diff
buf += lines[i] + leaves[i].pstring() + "\n"
return buf
def _leaf_string(leaf, show_pos):
string = ""
for mrph in leaf.mrph_list():
string += mrph.midasi
if show_pos:
if re.search("^(?:固有名詞|人名|地名)$", mrph.bunrui):
string += POS_MARK[mrph.bunrui]
else:
string += POS_MARK[mrph.hinsi]
return string
def _str_real_length(string):
length = 0
for char in string:
if re.search(r"^[a-zA-Z*!?]$", char):
# 品詞情報は長さ1
length += 1
else:
length += 2
return length