Alternative implementation for resources for the non-Qt case.

scripts/pyqrc.py

@@ -0,0 +1,154 @@
+
+# A lean substitute for QRC which is employed in the non-Qt case
+
+import xml.etree.ElementTree as et
+import argparse
+import zlib
+import os
+
+
+# A class providing the generator
+
+class RCFile(object):
+
+  def __init__(self, alias, path):
+    self.path = path
+    self.alias = alias
+
+  def write(self, file, index):
+
+    f = open(self.path, "rb")
+    raw_data = f.read()
+    f.close()
+
+    data = zlib.compress(raw_data)
+    compressed = "true"
+
+    cb = "{"
+    bc = "}"
+    cls = "Resource" + str(index)
+    file.write(f"\n// Resource file {self.path} as {self.alias}\n")
+    file.write( "namespace {\n")
+    file.write( "\n")
+    file.write(f"  class {cls}\n")
+    file.write( "  {\n")
+    file.write(f"    {cls}() {cb}\n")
+    file.write(f"      static bool compressed = {compressed};\n")
+    file.write(f"      static const char *name = \"{self.alias}\";\n")
+    file.write( "      static const unsigned char data[] = {")
+    n = 0
+    for b in data:
+      if n == 0:
+        file.write("\n        ")
+      file.write("0x%02x," % b)
+      n += 1
+      if n == 16:
+        n = 0
+    file.write( "\n")
+    file.write( "      };\n")
+    file.write( "      m_id = tl::register_resource(name, compressed, data, sizeof(data) / sizeof(data[0]));\n")
+    file.write( "    }\n")
+    file.write(f"    ~{cls}() {cb}\n")
+    file.write( "      tl::unregister_resource(m_id)\n")
+    file.write( "    }\n")
+    file.write( "    tl::resource_id_type m_id;\n")
+    file.write(f"  {bc} resource_instance{index}\n")
+    file.write( "\n")
+    file.write( "}\n")
+
+    
+class RCGenerator(object):
+
+  def __init__(self):
+    self.files = []
+
+  def append(self, path, alias):
+    self.files.append(RCFile(path, alias))
+
+  def dump_files(self):
+    for f in self.files:
+      print(f.path)
+
+  def write(self, file):
+    file.write(f"""
+/*
+
+  KLayout Layout Viewer
+  Copyright (C) 2006-2022 Matthias Koefferlein
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+/**
+*  DO NOT EDIT THIS FILE. 
+*  This file has been created automatically
+*/
+
+#include "tlResources.h"
+""")
+    i = 1
+    for f in self.files:
+      f.write(file, i)
+      i += 1
+  
+
+# The main code
+
+generator = RCGenerator()
+
+# argument parsing
+
+parser = argparse.ArgumentParser(description='Lean QRC parser')
+parser.add_argument('input', type=str, nargs='+',
+                    help='The QRC input file')
+parser.add_argument('--output', '-o', type=str, nargs='?',
+                    help='The C++ output file')
+parser.add_argument('--path', '-p', type=str, nargs='?',
+                    help='Path to the input files (default is current directory)')
+
+args = parser.parse_args()
+
+# read the input file
+
+for input in args.input:
+
+  root_node = et.parse(input).getroot()
+
+  for qresource in root_node.findall('qresource'):
+    prefix = qresource.get('prefix')
+    for file in qresource.findall('file'):
+      alias = file.get('alias')
+      path = file.text
+      if alias is None:
+        alias = path
+      if prefix is not None:
+        alias = prefix + "/" + alias
+      if args.path is not None:
+        path = os.path.join(args.path, path)
+      else:
+        path = os.path.join(os.path.dirname(input), path)
+      generator.append(alias, path)
+
+# produce the output file
+
+if args.output is not None:
+  f = open(args.output, "w")
+  generator.write(f)
+  f.close()
+else:
+  generator.dump_files()
+
+