Merge remote-tracking branch 'image_formats/dev'

cps/book_formats.py

@@ -62,6 +62,8 @@ except ImportError as e:
     logger.warning('cannot import fb2, extracting fb2 metadata will not work: %s', e)
     use_fb2_meta = False
 
+from PIL import Image
+
 
 def process(tmp_file_path, original_file_name, original_file_extension):
     meta = None
@@ -131,6 +133,47 @@ def pdf_preview(tmp_file_path, tmp_dir):
     if use_generic_pdf_cover:
         return None
     else:
+        try:
+            input1 = PdfFileReader(open(tmp_file_path, 'rb'), strict=False)
+            page0 = input1.getPage(0)
+            xObject = page0['/Resources']['/XObject'].getObject()
+
+            for obj in xObject:
+                if xObject[obj]['/Subtype'] == '/Image':
+                    size = (xObject[obj]['/Width'], xObject[obj]['/Height'])
+                    data = xObject[obj]._data # xObject[obj].getData()
+                    if xObject[obj]['/ColorSpace'] == '/DeviceRGB':
+                        mode = "RGB"
+                    else:
+                        mode = "P"
+                    if '/Filter' in xObject[obj]:
+                        if xObject[obj]['/Filter'] == '/FlateDecode':
+                            img = Image.frombytes(mode, size, data)
+                            cover_file_name = os.path.splitext(tmp_file_path)[0] + ".cover.png"
+                            img.save(filename=os.path.join(tmp_dir, cover_file_name))
+                            return cover_file_name
+                            # img.save(obj[1:] + ".png")
+                        elif xObject[obj]['/Filter'] == '/DCTDecode':
+                            cover_file_name = os.path.splitext(tmp_file_path)[0] + ".cover.jpg"
+                            img = open(cover_file_name, "wb")
+                            img.write(data)
+                            img.close()
+                            return cover_file_name
+                        elif xObject[obj]['/Filter'] == '/JPXDecode':
+                            cover_file_name = os.path.splitext(tmp_file_path)[0] + ".cover.jp2"
+                            img = open(cover_file_name, "wb")
+                            img.write(data)
+                            img.close()
+                            return cover_file_name
+                    else:
+                        img = Image.frombytes(mode, size, data)
+                        cover_file_name = os.path.splitext(tmp_file_path)[0] + ".cover.png"
+                        img.save(filename=os.path.join(tmp_dir, cover_file_name))
+                        return cover_file_name
+                        # img.save(obj[1:] + ".png")
+        except Exception as ex:
+            print(ex)
+
         try:
             cover_file_name = os.path.splitext(tmp_file_path)[0] + ".cover.jpg"
             with Image(filename=tmp_file_path + "[0]", resolution=150) as img:

cps/helper.py

@@ -24,6 +24,7 @@ import ub
 from flask import current_app as app
 from tempfile import gettempdir
 import sys
+import io
 import os
 import re
 import unicodedata
@@ -34,6 +35,7 @@ from flask_babel import gettext as _
 from flask_login import current_user
 from babel.dates import format_datetime
 from datetime import datetime
+from PIL import Image
 import shutil
 import requests
 try:
@@ -442,27 +444,66 @@ def get_book_cover(cover_path):
         return send_from_directory(os.path.join(ub.config.config_calibre_dir, cover_path), "cover.jpg")
 
 
-# saves book cover to gdrive or locally
-def save_cover(url, book_path):
+# saves book cover from url
+def save_cover_from_url(url, book_path):
     img = requests.get(url)
-    if img.headers.get('content-type') != 'image/jpeg':
-        web.app.logger.error("Cover is no jpg file, can't save")
+    return save_cover(img, book_path)
+
+
+def save_cover_from_filestorage(filepath, saved_filename, img):
+    if hasattr(img,'_content'):
+        f = open(os.path.join(filepath, saved_filename), "wb")
+        f.write(img._content)
+        f.close()
+    else:
+        # check if file path exists, otherwise create it, copy file to calibre path and delete temp file
+        if not os.path.exists(filepath):
+            try:
+                os.makedirs(filepath)
+            except OSError:
+                web.app.logger.error(u"Failed to create path for cover")
+                return False
+        try:
+            img.save(os.path.join(filepath, saved_filename))
+        except OSError:
+            web.app.logger.error(u"Failed to store cover-file")
+            return False
+        except IOError:
+            web.app.logger.error(u"Cover-file is not a valid image file")
+            return False
+    return True
+
+
+# saves book cover to gdrive or locally
+def save_cover(img, book_path):
+    content_type = img.headers.get('content-type')
+    if content_type not in ('image/jpeg', 'image/png', 'image/webp'):
+        web.app.logger.error("Only jpg/jpeg/png/webp files are supported as coverfile")
         return False
 
+    # convert to jpg because calibre only supports jpg
+    if content_type in ('image/png', 'image/webp'):
+        if hasattr(img,'stream'):
+            imgc = Image.open(img.stream)
+        else:
+            imgc = Image.open(io.BytesIO(img.content))
+        im = imgc.convert('RGB')
+        tmp_bytesio = io.BytesIO()
+        im.save(tmp_bytesio, format='JPEG')
+        img._content = tmp_bytesio.getvalue()
+
     if ub.config.config_use_google_drive:
         tmpDir = gettempdir()
-        f = open(os.path.join(tmpDir, "uploaded_cover.jpg"), "wb")
-        f.write(img.content)
-        f.close()
-        gd.uploadFileToEbooksFolder(os.path.join(book_path, 'cover.jpg'), os.path.join(tmpDir, f.name))
-        web.app.logger.info("Cover is saved on Google Drive")
-        return True
-
-    f = open(os.path.join(ub.config.config_calibre_dir, book_path, "cover.jpg"), "wb")
-    f.write(img.content)
-    f.close()
-    web.app.logger.info("Cover is saved")
-    return True
+        if save_cover_from_filestorage(tmpDir, "uploaded_cover.jpg", img) is True:
+            gd.uploadFileToEbooksFolder(os.path.join(book_path, 'cover.jpg'),
+                                        os.path.join(tmpDir, "uploaded_cover.jpg"))
+            web.app.logger.info("Cover is saved on Google Drive")
+            return True
+        else:
+            return False
+    else:
+        return save_cover_from_filestorage(os.path.join(ub.config.config_calibre_dir, book_path), "cover.jpg", img)
+
 
 
 def do_download_file(book, book_format, data, headers):
@@ -487,7 +528,6 @@ def do_download_file(book, book_format, data, headers):
 
 
 
-
 def check_unrar(unrarLocation):
     error = False
     if os.path.exists(unrarLocation):

cps/templates/book_edit.html

@@ -90,7 +90,7 @@
     <div class="form-group" aria-label="Upload cover from local drive">
         <label class="btn btn-primary btn-file" for="btn-upload-cover">{{ _('Upload Cover from local drive') }}</label>
         <div class="upload-cover-input-text" id="upload-cover"></div>
-        <input id="btn-upload-cover" name="btn-upload-cover" type="file">
+        <input id="btn-upload-cover" name="btn-upload-cover" type="file" accept=".jpg, .jpeg, .png, .webp">
     </div>
     <div class="form-group">
       <label for="pubdate">{{_('Publishing date')}}</label>

cps/web.py

@@ -3558,33 +3558,19 @@ def upload_single_file(request, book, book_id):
             helper.global_WorkerThread.add_upload(current_user.nickname,
                 "<a href=\"" + url_for('show_book', book_id=book.id) + "\">" + uploadText + "</a>")
 
+
 def upload_cover(request, book):
     if 'btn-upload-cover' in request.files:
         requested_file = request.files['btn-upload-cover']
         # check for empty request
         if requested_file.filename != '':
-            file_ext = requested_file.filename.rsplit('.', 1)[-1].lower()
-            filepath = os.path.normpath(os.path.join(config.config_calibre_dir, book.path))
-            saved_filename = os.path.join(filepath,  'cover.' + file_ext)
-
-            # check if file path exists, otherwise create it, copy file to calibre path and delete temp file
-            if not os.path.exists(filepath):
-                try:
-                    os.makedirs(filepath)
-                except OSError:
-                    flash(_(u"Failed to create path for cover %(path)s (Permission denied).", cover=filepath),
-                          category="error")
-                    return redirect(url_for('show_book', book_id=book.id))
-            try:
-                requested_file.save(saved_filename)
-                # im=Image.open(saved_filename)
-                book.has_cover = 1
-            except OSError:
-                flash(_(u"Failed to store cover-file %(cover)s.", cover=saved_filename), category="error")
-                return redirect(url_for('show_book', book_id=book.id))
-            except IOError:
-                flash(_(u"Cover-file is not a valid image file" % saved_filename), category="error")
-                return redirect(url_for('show_book', book_id=book.id))
+            if helper.save_cover(requested_file, book.path) is True:
+                return True
+            else:
+                # ToDo Message not always coorect
+                flash(_(u"Cover is not a supported imageformat (jpg/png/webp), can't save"), category="error")
+                return False
+    return None
 
 @app.route("/admin/book/<int:book_id>", methods=['GET', 'POST'])
 @login_required_if_no_ano
@@ -3605,7 +3591,8 @@ def edit_book(book_id):
         return redirect(url_for("index"))
 
     upload_single_file(request, book, book_id)
-    upload_cover(request, book)
+    if upload_cover(request, book) is True:
+        book.has_cover = 1
     try:
         to_save = request.form.to_dict()
         # Update book
@@ -3651,10 +3638,10 @@ def edit_book(book_id):
 
         if not error:
             if to_save["cover_url"]:
-                if helper.save_cover(to_save["cover_url"], book.path) is True:
+                if helper.save_cover_from_url(to_save["cover_url"], book.path) is True:
                     book.has_cover = 1
                 else:
-                    flash(_(u"Cover is not a jpg file, can't save"), category="error")
+                    flash(_(u"Cover is not a supported imageformat (jpg/png/webp), can't save"), category="error")
 
             if book.series_index != to_save["series_index"]:
                 book.series_index = to_save["series_index"]

requirements.txt

@@ -13,3 +13,4 @@ SQLAlchemy>=1.1.0
 tornado>=4.1
 Wand>=0.4.4
 unidecode>=0.04.19
+Pillow>=5.4.0