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embed-resources.py
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embed-resources.py
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#!/usr/bin/python
# -*- coding: utf-8 -*-
import sys
import os
import zlib
# =============================================================================
# =============================================================================
# =============================================================================
class OsmAndCoreResourcesPacker(object):
# -------------------------------------------------------------------------
def __init__(self):
return
# -------------------------------------------------------------------------
def pack(self, resources, outputFilename):
# Check if output directory exists
outputDir = os.path.dirname(outputFilename)
if not os.path.isdir(outputDir):
os.makedirs(outputDir)
# Open file for writing and and write header to it
try:
outputFile = open(outputFilename, "w")
except IOError:
print("Failed to open '%s' for writing" % (outputFilename))
return False
outputFile.write("// AUTOGENERATED FILE\n")
outputFile.write("// Resources bundle for OsmAnd::CoreResourcesEmbeddedBundle\n")
outputFile.write("\n")
outputFile.write("#include <stddef.h>\n")
outputFile.write("#include <stdint.h>\n")
outputFile.write("\n")
outputFile.write("#define ___STRINGIFY2(x) #x\n")
outputFile.write("#define ___STRINGIFY(x) ___STRINGIFY2(x)\n")
outputFile.write("\n")
outputFile.write("#define GETTER_NAME(varname) __get__##varname\\\n")
outputFile.write("\n")
outputFile.write("#if defined(_WIN32) || defined(__CYGWIN__)\n")
outputFile.write("# define BUNDLE_API __declspec(dllexport)\n")
outputFile.write("#elif (defined(__GNUC__) && __GNUC__ >= 4) || defined(__clang__)\n")
outputFile.write("# define BUNDLE_API __attribute__ ((visibility(\"default\"), used))\n")
outputFile.write("#else\n")
outputFile.write("# define BUNDLE_API\n")
outputFile.write("#endif\n")
outputFile.write("\n")
outputFile.write("#if defined(_MSC_VER)\n")
outputFile.write("# define EMIT_GETTER(varname, accessor)\\\n")
outputFile.write(" __pragma( comment ( linker, \"/INCLUDE:_\"___STRINGIFY( __get__##varname ) ) )\\\n")
outputFile.write(" BUNDLE_API const void* __get__##varname() {\\\n")
outputFile.write(" return reinterpret_cast<const void*>(accessor varname);\\\n")
outputFile.write(" }\n")
outputFile.write("#else\n")
outputFile.write("# define EMIT_GETTER(varname, accessor)\\\n")
outputFile.write(" BUNDLE_API const void* __get__##varname() {\\\n")
outputFile.write(" return reinterpret_cast<const void*>(accessor varname);\\\n")
outputFile.write(" }\n")
outputFile.write("#endif // defined(_MSC_VER)\n")
outputFile.write("\n")
outputFile.write("extern \"C\" {\n")
outputFile.write("\n")
# For each resource in collection, pack it
for (idx, resource) in enumerate(resources):
originalSize = os.path.getsize(resource[0])
with open(resource[0], "rb") as resourceFile:
resourceContent = resourceFile.read()
packedContent = zlib.compress(resourceContent, 9)
packedSize = len(packedContent)
outputFile.write("static const char* const __CoreResourcesEmbeddedBundle__ResourceName_%d = \"%s\";\n" % (idx, resource[1]))
outputFile.write("EMIT_GETTER(__CoreResourcesEmbeddedBundle__ResourceName_%d, )\n" % (idx))
outputFile.write("static const uint8_t __CoreResourcesEmbeddedBundle__ResourceData_%d[] = {\n" % (idx))
# Write size header
outputFile.write("\t0x%02x, 0x%02x, 0x%02x, 0x%02x," % (
(originalSize >> 24)&0xff,
(originalSize >> 16)&0xff,
(originalSize >> 8)&0xff,
(originalSize >> 0)&0xff))
# Write content
for (byteIdx, byteValue) in enumerate(packedContent):
if byteIdx % 16 == 0:
outputFile.write("\n\t")
outputFile.write("0x%02x, " % (byteValue))
outputFile.write("\n")
outputFile.write("};\n")
outputFile.write("EMIT_GETTER(__CoreResourcesEmbeddedBundle__ResourceData_%d, )\n" % (idx))
outputFile.write("const size_t __CoreResourcesEmbeddedBundle__ResourceSize_%d = 4 + %d;\n" % (idx, packedSize))
outputFile.write("EMIT_GETTER(__CoreResourcesEmbeddedBundle__ResourceSize_%d, &)\n" % (idx))
outputFile.write("\n")
print("Packed '%s'(%d bytes) as '%s'(4+%d bytes)..." % (resource[0], originalSize, resource[1], packedSize))
# Write footer of the file and close it
outputFile.write("const uint32_t __CoreResourcesEmbeddedBundle__ResourcesCount = %d;\n" % (len(resources)))
outputFile.write("EMIT_GETTER(__CoreResourcesEmbeddedBundle__ResourcesCount, &)\n")
outputFile.write("\n")
outputFile.write("BUNDLE_API void __CoreResourcesEmbeddedBundle__FakeReferences() {\\\n")
for (idx, resource) in enumerate(resources):
outputFile.write(" GETTER_NAME(__CoreResourcesEmbeddedBundle__ResourceName_%d)();\n" % (idx))
outputFile.write(" GETTER_NAME(__CoreResourcesEmbeddedBundle__ResourceData_%d)();\n" % (idx))
outputFile.write(" GETTER_NAME(__CoreResourcesEmbeddedBundle__ResourceSize_%d)();\n" % (idx))
outputFile.write("}\n")
outputFile.write("\n")
outputFile.write("} // extern \"C\"\n")
outputFile.write("\n")
outputFile.flush()
outputFile.close()
return True
# =============================================================================
# =============================================================================
# =============================================================================
if __name__=='__main__':
# Get root directory of entire project
rootPath = os.path.realpath(os.path.join(os.path.dirname(os.path.realpath(__file__)), ".."))
print("OsmAnd root path: %s" % (rootPath))
resourcesPath = rootPath + "/resources"
print("OsmAnd resources path: %s" % (resourcesPath))
# Output filename (in current working directory)
workingDir = os.getcwd()
if len(sys.argv) >= 2:
workingDir = sys.argv[1]
print("Working in: %s" % (workingDir))
embeddedFilename = workingDir + "/gen/EmbeddedResourcesBundle.cpp"
# Embedded resources
with open(resourcesPath + "/embed-resources.list", "r") as embedResourcesListFile:
embedResourcesList = embedResourcesListFile.readlines()
embeddedResources = []
for embedResourcesListEntry in embedResourcesList:
embedResourcesListEntryParts = embedResourcesListEntry.split(':')
originalPath = embedResourcesListEntryParts[0].strip()
packedPath = embedResourcesListEntryParts[1].strip()
embeddedResources.append((resourcesPath + originalPath, packedPath))
packer = OsmAndCoreResourcesPacker()
ok = packer.pack(embeddedResources, embeddedFilename)
sys.exit(0 if ok else -1)