From e1ab6c14ef3fbf39b68392d963c56da3e5e272f4 Mon Sep 17 00:00:00 2001
From: Adam Goldsmith <adam@adamgoldsmith.name>
Date: Sun, 10 Jun 2018 23:13:29 -0400
Subject: [PATCH] Initial Commit, kind of works!

---
 HPGLWrap.py | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100755 HPGLWrap.py

diff --git a/HPGLWrap.py b/HPGLWrap.py
new file mode 100755
index 0000000..f0da2e9
--- /dev/null
+++ b/HPGLWrap.py
@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+
+def write_pen_values(values, char):
+    return "!v64" + char + "".join(["{:04d}".format(value) for value in values])
+
+def pre_content(filename, power=50, speed=50, rate=2500):
+    jobName = os.path.basename(filename)[:80]
+    # Start
+    outString = "@PJL JOB NAME={}\r\n".format(jobName)
+    outString += "E@PJL ENTER LANGUAGE=PCL\r\n%-12345X"
+
+    # Reset
+    outString += "E"
+
+    # Unit
+    outString += "&u254D"
+
+    # Cursor
+    outString += "*p100X"
+    outString += "*p100Y"
+
+    # Set filename
+    outString += "!m{:d}N".format(len(jobName)) + jobName
+
+    # Set raster power+velocity. Only affects raster. Shows in display before start
+    outString += "!r{:d}I".format(speed * 10)
+    outString += "!r{:d}P".format(power * 10);
+
+    # Select first (and only) pen (commented out in original source)
+    # outString += "!v1D"
+    # outString += "!m2A" # might cause autofocus?
+
+    # Use same value for all 16 pens
+    # doesn't seem to affect vector settings
+    outString += write_pen_values([speed * 10] * 16, 'V') # Velocity, 1000=100%
+    outString += write_pen_values([power * 10] * 16, 'V') # Power, 1000=100%
+    outString += write_pen_values([rate] * 16, 'V') # PPI
+    outString += "%1B"
+
+    return outString
+
+def post_content():
+    outString = "%1A" # Leave HPGL vector mode
+    outString += "E" # Reset
+    outString += "%-12345X@PJL EOJ \r\n" # End
+    return outString
+
+def main(infile, outfile, power=50, speed=50, rate=100):
+    with open(infile, 'r') as f:
+        data = f.read()
+    with open(outfile, 'w') as f:
+        f.write(pre_content(outfile, int(power), int(speed), int(rate)))
+        f.write(data)
+        f.write(post_content())
+
+if __name__ == '__main__':
+    print(sys.argv)
+    main(*sys.argv[1:])