Add .doc file parser. (#497)

### What problem does this PR solve?
Add `.doc` file parser, using tika.
```
pip install tika
```
```
from tika import parser
from io import BytesIO

def extract_text_from_doc_bytes(doc_bytes):
    file_like_object = BytesIO(doc_bytes)
    parsed = parser.from_buffer(file_like_object)
    return parsed["content"]
```
### Type of change

- [x] New Feature (non-breaking change which adds functionality)

---------

Co-authored-by: chrysanthemum-boy <fannc@qq.com>

api/utils/file_utils.py

@@ -147,7 +147,7 @@ def filename_type(filename):
         return FileType.PDF.value
 
     if re.match(
-            r".*\.(docx|ppt|pptx|yml|xml|htm|json|csv|txt|ini|xls|xlsx|wps|rtf|hlp|pages|numbers|key|md)$", filename):
+            r".*\.(doc|docx|ppt|pptx|yml|xml|htm|json|csv|txt|ini|xls|xlsx|wps|rtf|hlp|pages|numbers|key|md)$", filename):
         return FileType.DOC.value
 
     if re.match(

rag/app/book.py

@@ -11,6 +11,7 @@
 #  limitations under the License.
 #
 import copy
+from tika import parser
 import re
 from io import BytesIO
 
@@ -103,9 +104,19 @@ def chunk(filename, binary=None, from_page=0, to_page=100000,
             random_choices([t for t, _ in sections], k=200)))
         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]
+        remove_contents_table(sections, eng=is_english(
+            random_choices([t for t, _ in sections], k=200)))
+        callback(0.8, "Finish parsing.")
+
     else:
         raise NotImplementedError(
-            "file type not supported yet(docx, pdf, txt supported)")
+            "file type not supported yet(doc, docx, pdf, txt supported)")
 
     make_colon_as_title(sections)
     bull = bullets_category(

rag/app/laws.py

@@ -11,6 +11,7 @@
 #  limitations under the License.
 #
 import copy
+from tika import parser
 import re
 from io import BytesIO
 from docx import Document
@@ -123,9 +124,18 @@ def chunk(filename, binary=None, from_page=0, to_page=100000,
         sections = txt.split("\n")
         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(docx, pdf, txt supported)")
+            "file type not supported yet(doc, docx, pdf, txt supported)")
 
     # is it English
     eng = lang.lower() == "english"  # is_english(sections)

rag/app/naive.py

@@ -10,6 +10,7 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 #
+from tika import parser
 from io import BytesIO
 from docx import Document
 import re
@@ -154,9 +155,17 @@ def chunk(filename, binary=None, from_page=0, to_page=100000,
         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(docx, pdf, txt supported)")
+            "file type not supported yet(doc, docx, pdf, txt supported)")
 
     chunks = naive_merge(
         sections, parser_config.get(

rag/app/one.py

@@ -10,6 +10,8 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 #
+from tika import parser
+from io import BytesIO
 import re
 from rag.app import laws
 from rag.nlp import huqie, tokenize, find_codec
@@ -95,9 +97,17 @@ def chunk(filename, binary=None, from_page=0, to_page=100000,
         sections = [s for s in sections if s]
         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(docx, pdf, txt supported)")
+            "file type not supported yet(doc, docx, pdf, txt supported)")
 
     doc = {
         "docnm_kwd": filename,

requirements.txt

@@ -116,6 +116,7 @@ sniffio==1.3.1
 StrEnum==0.4.15
 sympy==1.12
 threadpoolctl==3.3.0
+tika==2.6.0
 tiktoken==0.6.0
 tokenizers==0.15.2
 torch==2.2.1
@@ -133,4 +134,4 @@ xxhash==3.4.1
 yarl==1.9.4
 zhipuai==2.0.1
 BCEmbedding
-loguru==0.7.2
+loguru==0.7.2