add scale

bin/pdfknife-scale.py

@@ -0,0 +1,64 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import argparse
+import logging
+
+from PDFknife import __version__, find_available_engine
+
+
+def scale(filename, scale, output=None):
+    """
+    # If fails, needs to comment gs line in
+    # /etc/ImageMagick-7/policy.xml
+    """
+    from PDFknife._utils import default_output
+    import subprocess
+    if output is None:
+        output = default_output('SCALED', filename)
+
+    command = ['pdfjam',
+	           '--scale', scale,
+               filename,
+               '--outfile',
+               output,
+               ]
+
+    print(command)
+
+    #logger.debug(command)
+    #logger.debug(f'Executed command: {command}')
+    process = subprocess.Popen(command, stdout=subprocess.PIPE)
+    stdout, stderr = process.communicate()
+
+
+def main():
+    parser = argparse.ArgumentParser(description='rescale a pdf',
+                                     epilog='')
+    parser.add_argument('--version', action='version', version=__version__)
+    parser.add_argument('-d', '--debug', action='store_true',
+                        default=False, help='Run in debug mode')
+    parser.add_argument('pdf', metavar='PDF', help='Filename')
+    parser.add_argument('-s', help='Scale value',
+                        required=True, default='.9')
+    args = parser.parse_args()
+
+    # Logger level
+    if args.debug:
+        llevel = logging.DEBUG
+    else:
+        llevel = logging.INFO
+    logger = logging.getLogger()
+    logger.setLevel(llevel)
+
+    steam_handler = logging.StreamHandler()
+    steam_handler.setLevel(llevel)
+    logger.addHandler(steam_handler)
+
+    logger.debug(f'Script arguments: {args}')
+
+    scale(args.pdf, scale=args.s)
+
+
+if __name__ == '__main__':
+    main()

setup.py

@@ -35,8 +35,9 @@
                     'bin/pdfknife-merge.py',
                     'bin/pdfknife-recto.py',
                     'bin/pdfknife-reverse.py',
-                    'bin/pdfknife-split.py',
+                    'bin/pdfknife-scale.py',
                     'bin/pdfknife-shrink.py',
+                    'bin/pdfknife-split.py',
                     'bin/pdfknife-trim.py',
                     ],
     install_requires=install_requires,