Spaces:
Paused
Paused
File size: 7,787 Bytes
ab2ded1 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 |
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import copy
from tika import parser
import re
from io import BytesIO
from docx import Document
from api.db import ParserType
from rag.nlp import bullets_category, is_english, tokenize, remove_contents_table, hierarchical_merge, \
make_colon_as_title, add_positions, tokenize_chunks, find_codec, docx_question_level
from rag.nlp import rag_tokenizer
from deepdoc.parser import PdfParser, DocxParser, PlainParser, HtmlParser
from rag.settings import cron_logger
class Docx(DocxParser):
def __init__(self):
pass
def __clean(self, line):
line = re.sub(r"\u3000", " ", line).strip()
return line
def old_call(self, filename, binary=None, from_page=0, to_page=100000):
self.doc = Document(
filename) if not binary else Document(BytesIO(binary))
pn = 0
lines = []
for p in self.doc.paragraphs:
if pn > to_page:
break
if from_page <= pn < to_page and p.text.strip():
lines.append(self.__clean(p.text))
for run in p.runs:
if 'lastRenderedPageBreak' in run._element.xml:
pn += 1
continue
if 'w:br' in run._element.xml and 'type="page"' in run._element.xml:
pn += 1
return [l for l in lines if l]
def __call__(self, filename, binary=None, from_page=0, to_page=100000):
self.doc = Document(
filename) if not binary else Document(BytesIO(binary))
pn = 0
lines = []
bull = bullets_category([p.text for p in self.doc.paragraphs])
for p in self.doc.paragraphs:
if pn > to_page:
break
question_level, p_text = docx_question_level(p, bull)
if not p_text.strip("\n"):continue
lines.append((question_level, p_text))
for run in p.runs:
if 'lastRenderedPageBreak' in run._element.xml:
pn += 1
continue
if 'w:br' in run._element.xml and 'type="page"' in run._element.xml:
pn += 1
visit = [False for _ in range(len(lines))]
sections = []
for s in range(len(lines)):
e = s + 1
while e < len(lines):
if lines[e][0] <= lines[s][0]:
break
e += 1
if e - s == 1 and visit[s]: continue
sec = []
next_level = lines[s][0] + 1
while not sec and next_level < 22:
for i in range(s+1, e):
if lines[i][0] != next_level: continue
sec.append(lines[i][1])
visit[i] = True
next_level += 1
sec.insert(0, lines[s][1])
sections.append("\n".join(sec))
return [l for l in sections if l]
def __str__(self) -> str:
return f'''
question:{self.question},
answer:{self.answer},
level:{self.level},
childs:{self.childs}
'''
class Pdf(PdfParser):
def __init__(self):
self.model_speciess = ParserType.LAWS.value
super().__init__()
def __call__(self, filename, binary=None, from_page=0,
to_page=100000, zoomin=3, callback=None):
callback(msg="OCR is running...")
self.__images__(
filename if not binary else binary,
zoomin,
from_page,
to_page,
callback
)
callback(msg="OCR finished")
from timeit import default_timer as timer
start = timer()
self._layouts_rec(zoomin)
callback(0.67, "Layout analysis finished")
cron_logger.info("layouts:".format(
(timer() - start) / (self.total_page + 0.1)))
self._naive_vertical_merge()
callback(0.8, "Text extraction finished")
return [(b["text"], self._line_tag(b, zoomin))
for b in self.boxes], None
def chunk(filename, binary=None, from_page=0, to_page=100000,
lang="Chinese", callback=None, **kwargs):
"""
Supported file formats are docx, pdf, txt.
"""
doc = {
"docnm_kwd": filename,
"title_tks": rag_tokenizer.tokenize(re.sub(r"\.[a-zA-Z]+$", "", filename))
}
doc["title_sm_tks"] = rag_tokenizer.fine_grained_tokenize(doc["title_tks"])
pdf_parser = None
sections = []
# is it English
eng = lang.lower() == "english" # is_english(sections)
if re.search(r"\.docx$", filename, re.IGNORECASE):
callback(0.1, "Start to parse.")
for txt in Docx()(filename, binary):
sections.append(txt)
callback(0.8, "Finish parsing.")
chunks = sections
return tokenize_chunks(chunks, doc, eng, pdf_parser)
elif re.search(r"\.pdf$", filename, re.IGNORECASE):
pdf_parser = Pdf() if kwargs.get(
"parser_config", {}).get(
"layout_recognize", True) else PlainParser()
for txt, poss in pdf_parser(filename if not binary else binary,
from_page=from_page, to_page=to_page, callback=callback)[0]:
sections.append(txt + poss)
elif re.search(r"\.txt$", filename, re.IGNORECASE):
callback(0.1, "Start to parse.")
txt = ""
if binary:
encoding = find_codec(binary)
txt = binary.decode(encoding, errors="ignore")
else:
with open(filename, "r") as f:
while True:
l = f.readline()
if not l:
break
txt += l
sections = txt.split("\n")
sections = [l for l in sections if l]
callback(0.8, "Finish parsing.")
elif re.search(r"\.(htm|html)$", filename, re.IGNORECASE):
callback(0.1, "Start to parse.")
sections = HtmlParser()(filename, binary)
sections = [l for l in sections if l]
callback(0.8, "Finish parsing.")
elif re.search(r"\.doc$", filename, re.IGNORECASE):
callback(0.1, "Start to parse.")
binary = BytesIO(binary)
doc_parsed = parser.from_buffer(binary)
sections = doc_parsed['content'].split('\n')
sections = [l for l in sections if l]
callback(0.8, "Finish parsing.")
else:
raise NotImplementedError(
"file type not supported yet(doc, docx, pdf, txt supported)")
# Remove 'Contents' part
remove_contents_table(sections, eng)
make_colon_as_title(sections)
bull = bullets_category(sections)
chunks = hierarchical_merge(bull, sections, 5)
if not chunks:
callback(0.99, "No chunk parsed out.")
return tokenize_chunks(["\n".join(ck)
for ck in chunks], doc, eng, pdf_parser)
if __name__ == "__main__":
import sys
def dummy(prog=None, msg=""):
pass
chunk(sys.argv[1], callback=dummy)
|