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#
# Copyright 2024 The InfiniFlow Authors. All Rights Reserved.
#
# 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 base64
import json
import os
import re
from io import BytesIO
import pdfplumber
from PIL import Image
from cachetools import LRUCache, cached
from ruamel.yaml import YAML
from api.db import FileType
from api.constants import IMG_BASE64_PREFIX
PROJECT_BASE = os.getenv("RAG_PROJECT_BASE") or os.getenv("RAG_DEPLOY_BASE")
RAG_BASE = os.getenv("RAG_BASE")
def get_project_base_directory(*args):
global PROJECT_BASE
if PROJECT_BASE is None:
PROJECT_BASE = os.path.abspath(
os.path.join(
os.path.dirname(os.path.realpath(__file__)),
os.pardir,
os.pardir,
)
)
if args:
return os.path.join(PROJECT_BASE, *args)
return PROJECT_BASE
def get_rag_directory(*args):
global RAG_BASE
if RAG_BASE is None:
RAG_BASE = os.path.abspath(
os.path.join(
os.path.dirname(os.path.realpath(__file__)),
os.pardir,
os.pardir,
os.pardir,
)
)
if args:
return os.path.join(RAG_BASE, *args)
return RAG_BASE
def get_rag_python_directory(*args):
return get_rag_directory("python", *args)
def get_home_cache_dir():
dir = os.path.join(os.path.expanduser('~'), ".ragflow")
try:
os.mkdir(dir)
except OSError:
pass
return dir
@cached(cache=LRUCache(maxsize=10))
def load_json_conf(conf_path):
if os.path.isabs(conf_path):
json_conf_path = conf_path
else:
json_conf_path = os.path.join(get_project_base_directory(), conf_path)
try:
with open(json_conf_path) as f:
return json.load(f)
except BaseException:
raise EnvironmentError(
"loading json file config from '{}' failed!".format(json_conf_path)
)
def dump_json_conf(config_data, conf_path):
if os.path.isabs(conf_path):
json_conf_path = conf_path
else:
json_conf_path = os.path.join(get_project_base_directory(), conf_path)
try:
with open(json_conf_path, "w") as f:
json.dump(config_data, f, indent=4)
except BaseException:
raise EnvironmentError(
"loading json file config from '{}' failed!".format(json_conf_path)
)
def load_json_conf_real_time(conf_path):
if os.path.isabs(conf_path):
json_conf_path = conf_path
else:
json_conf_path = os.path.join(get_project_base_directory(), conf_path)
try:
with open(json_conf_path) as f:
return json.load(f)
except BaseException:
raise EnvironmentError(
"loading json file config from '{}' failed!".format(json_conf_path)
)
def load_yaml_conf(conf_path):
if not os.path.isabs(conf_path):
conf_path = os.path.join(get_project_base_directory(), conf_path)
try:
with open(conf_path) as f:
yaml = YAML(typ='safe', pure=True)
return yaml.load(f)
except Exception as e:
raise EnvironmentError(
"loading yaml file config from {} failed:".format(conf_path), e
)
def rewrite_yaml_conf(conf_path, config):
if not os.path.isabs(conf_path):
conf_path = os.path.join(get_project_base_directory(), conf_path)
try:
with open(conf_path, "w") as f:
yaml = YAML(typ="safe")
yaml.dump(config, f)
except Exception as e:
raise EnvironmentError(
"rewrite yaml file config {} failed:".format(conf_path), e
)
def rewrite_json_file(filepath, json_data):
with open(filepath, "w", encoding='utf-8') as f:
json.dump(json_data, f, indent=4, separators=(",", ": "))
f.close()
def filename_type(filename):
filename = filename.lower()
if re.match(r".*\.pdf$", filename):
return FileType.PDF.value
if re.match(
r".*\.(eml|doc|docx|ppt|pptx|yml|xml|htm|json|csv|txt|ini|xls|xlsx|wps|rtf|hlp|pages|numbers|key|md|py|js|java|c|cpp|h|php|go|ts|sh|cs|kt|html|sql)$", filename):
return FileType.DOC.value
if re.match(
r".*\.(wav|flac|ape|alac|wavpack|wv|mp3|aac|ogg|vorbis|opus|mp3)$", filename):
return FileType.AURAL.value
if re.match(r".*\.(jpg|jpeg|png|tif|gif|pcx|tga|exif|fpx|svg|psd|cdr|pcd|dxf|ufo|eps|ai|raw|WMF|webp|avif|apng|icon|ico|mpg|mpeg|avi|rm|rmvb|mov|wmv|asf|dat|asx|wvx|mpe|mpa|mp4)$", filename):
return FileType.VISUAL.value
return FileType.OTHER.value
def thumbnail_img(filename, blob):
"""
MySQL LongText max length is 65535
"""
filename = filename.lower()
if re.match(r".*\.pdf$", filename):
pdf = pdfplumber.open(BytesIO(blob))
buffered = BytesIO()
resolution = 32
img = None
for _ in range(10):
# https://github.com/jsvine/pdfplumber?tab=readme-ov-file#creating-a-pageimage-with-to_image
pdf.pages[0].to_image(resolution=resolution).annotated.save(buffered, format="png")
img = buffered.getvalue()
if len(img) >= 64000 and resolution >= 2:
resolution = resolution / 2
buffered = BytesIO()
else:
break
return img
elif re.match(r".*\.(jpg|jpeg|png|tif|gif|icon|ico|webp)$", filename):
image = Image.open(BytesIO(blob))
image.thumbnail((30, 30))
buffered = BytesIO()
image.save(buffered, format="png")
return buffered.getvalue()
elif re.match(r".*\.(ppt|pptx)$", filename):
import aspose.slides as slides
import aspose.pydrawing as drawing
try:
with slides.Presentation(BytesIO(blob)) as presentation:
buffered = BytesIO()
scale = 0.03
img = None
for _ in range(10):
# https://reference.aspose.com/slides/python-net/aspose.slides/slide/get_thumbnail/#float-float
presentation.slides[0].get_thumbnail(scale, scale).save(
buffered, drawing.imaging.ImageFormat.png)
img = buffered.getvalue()
if len(img) >= 64000:
scale = scale / 2.0
buffered = BytesIO()
else:
break
return img
except Exception:
pass
return None
def thumbnail(filename, blob):
img = thumbnail_img(filename, blob)
if img is not None:
return IMG_BASE64_PREFIX + \
base64.b64encode(img).decode("utf-8")
else:
return ''
def traversal_files(base):
for root, ds, fs in os.walk(base):
for f in fs:
fullname = os.path.join(root, f)
yield fullname
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