Revert "Revert "Merge pull request #71 from cpacker/pdf-support""

This reverts commit 0d4faa1.

memgpt/utils.py

@@ -11,6 +11,7 @@
 import tiktoken
 import glob
 import sqlite3
+import fitz
 from tqdm import tqdm
 from memgpt.openai_tools import async_get_embedding_with_backoff
 
@@ -98,6 +99,12 @@ def read_in_chunks(file_object, chunk_size):
             break
         yield data
 
+def read_pdf_in_chunks(file, chunk_size):
+    doc = fitz.open(file)
+    for page in doc:
+        text = page.get_text()
+        yield text
+
 def read_in_rows_csv(file_object, chunk_size):
     csvreader = csv.reader(file_object)
     header = next(csvreader)
@@ -123,7 +130,11 @@ def total_bytes(pattern):
 def chunk_file(file, tkns_per_chunk=300, model='gpt-4'):
     encoding = tiktoken.encoding_for_model(model)
     with open(file, 'r') as f:
-        if file.endswith('.csv'):
+        if file.endswith('.pdf'):
+            lines = [l for l in read_pdf_in_chunks(file, tkns_per_chunk*8)]
+            if len(lines) == 0:
+                print(f"Warning: {file} did not have any extractable text.")
+        elif file.endswith('.csv'):
             lines = [l for l in read_in_rows_csv(f, tkns_per_chunk*8)]
         else:
             lines = [l for l in read_in_chunks(f, tkns_per_chunk*4)]

requirements.txt

@@ -6,6 +6,7 @@ geopy
 numpy
 openai
 pybars3
+pymupdf
 python-dotenv
 pytz
 rich