From ea5dc5be95a1bc8a8c8caf42ecf19b12a01e25ff Mon Sep 17 00:00:00 2001
From: Gertjan van den Burg <gertjanvandenburg@gmail.com>
Date: Thu, 9 Apr 2020 14:14:13 +0100
Subject: Log whether removing arXiv stamp was successful

---
 paper2remarkable/log.py             | 24 ++++++++++++++++--------
 paper2remarkable/providers/arxiv.py |  8 +++++---
 2 files changed, 21 insertions(+), 11 deletions(-)

diff --git a/paper2remarkable/log.py b/paper2remarkable/log.py
index bae1cbf..3a2fcc5 100644
--- a/paper2remarkable/log.py
+++ b/paper2remarkable/log.py
@@ -38,19 +38,27 @@ class Logger(metaclass=Singleton):
     def disable(self):
         self.enabled = False
 
-    def _log(self, msg, mode):
+    def _log(self, msg, mode, end='\n', add_prefix=True):
         if not self.enabled:
             return
         if not mode in ("info", "warn"):
             raise ValueError("Unknown logging mode: %s" % mode)
         file = sys.stdout if mode == "info" else sys.stderr
-        now = datetime.datetime.now()
-        nowstr = now.strftime("%Y-%m-%d %H:%M:%S")
-        print("%s - %s - %s" % (nowstr, mode.upper(), msg), file=file)
+        if add_prefix:
+            now = datetime.datetime.now()
+            nowstr = now.strftime("%Y-%m-%d %H:%M:%S")
+            prefix = "%s - %s - " % (nowstr, mode.upper())
+        else:
+            prefix = ""
+        print("%s%s" % (prefix, msg), end=end, file=file)
         file.flush()
 
-    def info(self, msg):
-        self._log(msg, "info")
+    def info(self, msg, end='\n'):
+        self._log(msg, "info", end=end)
+
+    def warning(self, msg, end='\n'):
+        self._log(msg, "warn", end=end)
+
+    def append(self, msg, mode, end='\n'):
+        self._log(msg, mode, end=end, add_prefix=False)
 
-    def warning(self, msg):
-        self._log(msg, "warn")
diff --git a/paper2remarkable/providers/arxiv.py b/paper2remarkable/providers/arxiv.py
index 572c2bf..47da448 100644
--- a/paper2remarkable/providers/arxiv.py
+++ b/paper2remarkable/providers/arxiv.py
@@ -65,7 +65,7 @@ class Arxiv(Provider):
 
     def dearxiv(self, input_file):
         """Remove the arXiv timestamp from a pdf"""
-        logger.info("Removing arXiv timestamp")
+        logger.info("Removing arXiv timestamp ... ", end="")
         basename = os.path.splitext(input_file)[0]
 
         uncompress_file = basename + "_uncompress.pdf"
@@ -90,13 +90,13 @@ class Arxiv(Provider):
                     current_obj.append(line)
                     objid = int(line.split(b" ")[0])
                     xref[objid] = char_count
-                elif current_obj and line.startswith(b'endobj'):
+                elif current_obj and line.startswith(b"endobj"):
                     # End the current object. If needed, replace the arXiv
                     # stamp in the block (done only once). Reset current
                     # object.
                     current_obj.append(line)
                     block = b"".join(current_obj)
-                    if not replaced_arXiv:
+                    if not replaced_arXiv and b"arXivStAmP" in block:
                         # remove the text
                         block, n_subs1 = re.subn(
                             b"\(" + DEARXIV_TEXT_REGEX + b"\)Tj",
@@ -148,6 +148,8 @@ class Arxiv(Provider):
         output_file = basename + "_dearxiv.pdf"
         self.compress_pdf(removed_file, output_file)
 
+        logger.append("success" if replaced_arXiv else "failed", "info")
+
         return output_file
 
 
-- 
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