修改为东南天坐标系

backend_service/venv/lib/python3.13/site-packages/unstructured/patches/pdfminer.py

@@ -0,0 +1,76 @@
+import functools
+from typing import Tuple, Union
+
+import pdfminer
+from pdfminer.psparser import (
+    END_KEYWORD,
+    KWD,
+    PSEOF,
+    PSBaseParser,
+    PSBaseParserToken,
+    PSKeyword,
+    log,
+)
+
+factory_seek = PSBaseParser.seek
+
+
+@functools.wraps(PSBaseParser.seek)
+def seek(self: PSBaseParser, pos: int) -> None:
+    factory_seek(self, pos)
+    self.eof = False
+
+
+@functools.wraps(PSBaseParser._parse_keyword)
+def _parse_keyword(self, s: bytes, i: int) -> int:
+    m = END_KEYWORD.search(s, i)
+    if m:
+        j = m.start(0)
+        self._curtoken += s[i:j]
+    else:
+        self._curtoken += s[i:]
+        return len(s)
+    if self._curtoken == b"true":
+        token: Union[bool, PSKeyword] = True
+    elif self._curtoken == b"false":
+        token = False
+    else:
+        token = KWD(self._curtoken)
+    self._add_token(token)
+    self._parse1 = self._parse_main
+    return j
+
+
+@functools.wraps(PSBaseParser.nexttoken)
+def nexttoken(self) -> Tuple[int, PSBaseParserToken]:
+    if self.eof:
+        # It's not really unexpected, come on now...
+        raise PSEOF("Unexpected EOF")
+    while not self._tokens:
+        try:
+            self.fillbuf()
+            self.charpos = self._parse1(self.buf, self.charpos)
+        except PSEOF:
+            # If we hit EOF in the middle of a token, try to parse
+            # it by tacking on whitespace, and delay raising PSEOF
+            # until next time around
+            self.charpos = self._parse1(b"\n", 0)
+            self.eof = True
+            # Oh, so there wasn't actually a token there? OK.
+            if not self._tokens:
+                raise
+    token = self._tokens.pop(0)
+    log.debug("nexttoken: %r", token)
+    return token
+
+
+def patch_psparser():
+    """Monkey-patch certain versions of pdfminer.six to avoid dropping
+    tokens at EOF (before 20231228) and splitting tokens at buffer
+    boundaries (20231228 and 20240706).
+    """
+    # Presuming the bug will be fixed in the next release
+    if pdfminer.__version__ <= "20240706":
+        PSBaseParser.seek = seek
+        PSBaseParser._parse_keyword = _parse_keyword
+        PSBaseParser.nexttoken = nexttoken