fancier version copies template file
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Guido van Rossum
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145
Mac/mkapplet.py
145
Mac/mkapplet.py
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@ -1,27 +1,28 @@
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"""Add a 'PYC ' resource named "__main__" to a resource file.
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"""Create an applet from a Python script.
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This first puts up a dialog asking for a Python source file ('TEXT'),
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then one asking for an existing destination file ('APPL' or 'rsrc').
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It compiles the Python source into a code object, marshals it into a string,
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prefixes the string with a .pyc header, and turns it into a resource,
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which is then written to the destination.
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If the destination already contains a resource with the same name and type,
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it is overwritten.
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This puts up a dialog asking for a Python source file ('TEXT').
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The output is a file with the same name but its ".py" suffix dropped.
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It is created by copying an applet template and then adding a 'PYC '
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resource named __main__ containing the compiled, marshalled script.
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"""
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import sys
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import string
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import os
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import marshal
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import imp
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import macfs
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import MacOS
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from Res import *
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# .pyc file (and 'PYC ' resource magic number)
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MAGIC = imp.get_magic()
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# Complete specification of our resource
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# Template file (searched on sys.path)
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TEMPLATE = "PythonApplet"
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# Specification of our resource
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RESTYPE = 'PYC '
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RESID = 128
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RESNAME = '__main__'
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# OpenResFile mode parameters
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@ -30,36 +31,110 @@ WRITE = 2
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def main():
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# Find the template
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# (there's no point in proceeding if we can't find it)
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for p in sys.path:
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template = os.path.join(p, TEMPLATE)
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try:
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tmpl = open(template, "rb")
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break
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except IOError:
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continue
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else:
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# XXX Ought to put up a dialog
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print "Template not found. Exit."
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return
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# Ask for source text
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srcfss, ok = macfs.StandardGetFile('TEXT')
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if not ok: return
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if not ok:
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tmpl.close()
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return
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filename = srcfss.as_pathname()
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# Read the source and compile it
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# (there's no point asking for a destination if it has a syntax error)
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# (there's no point overwriting the destination if it has a syntax error)
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filename = srcfss.as_pathname()
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fp = open(filename)
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text = fp.read()
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fp.close()
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code = compile(text, filename, "exec")
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try:
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code = compile(text, filename, "exec")
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except (SyntaxError, EOFError):
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print "Syntax error in script"
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tmpl.close()
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return
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# Ask for destination file
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# Set the destination file name
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dstfss, ok = macfs.StandardGetFile('APPL', 'rsrc')
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if not ok: return
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if string.lower(filename[-3:]) == ".py":
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destname = filename[:-3]
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else:
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destname = filename + ".applet"
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# Create the raw data for the resource from the code object
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# Copy the data from the template (creating the file as well)
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data = marshal.dumps(code)
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del code
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data = (MAGIC + '\0\0\0\0') + data
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dest = open(destname, "wb")
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data = tmpl.read()
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if data:
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dest.write(data)
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dest.close()
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tmpl.close()
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# Open the resource file
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# Copy the creator and type of the template to the destination
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fnum = FSpOpenResFile(dstfss.as_pathname(), WRITE)
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ctor, type = MacOS.GetCreatorAndType(template)
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MacOS.SetCreatorAndType(destname, ctor, type)
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# Delete any existing resource with name __main__ or number 128
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# Open the input and output resource forks
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input = FSpOpenResFile(template, READ)
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try:
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output = FSpOpenResFile(destname, WRITE)
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except MacOS.Error:
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print "Creating resource fork..."
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CreateResFile(destname)
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output = FSpOpenResFile(destname, WRITE)
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# Copy the resources from the template,
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# except a 'PYC ' resource named __main__
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UseResFile(input)
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ntypes = Count1Types()
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for itype in range(1, 1+ntypes):
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type = Get1IndType(itype)
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nresources = Count1Resources(type)
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for ires in range(1, 1+nresources):
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res = Get1IndResource(type, ires)
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id, type, name = res.GetResInfo()
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if (type, name) == (RESTYPE, RESNAME):
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continue # Don't copy __main__ from template
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size = res.SizeResource()
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attrs = res.GetResAttrs()
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print id, type, name, size, hex(attrs)
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res.LoadResource()
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res.DetachResource()
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UseResFile(output)
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try:
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res2 = Get1Resource(type, id)
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except MacOS.Error:
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res2 = None
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if res2:
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print "Overwriting..."
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res2.RmveResource()
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res.AddResource(type, id, name)
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#res.SetResAttrs(attrs)
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res.WriteResource()
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UseResFile(input)
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CloseResFile(input)
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# Make sure we're manipulating the output resource file now
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UseResFile(output)
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# Delete any existing 'PYC 'resource named __main__
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try:
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res = Get1NamedResource(RESTYPE, RESNAME)
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@ -67,23 +142,25 @@ def main():
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except Error:
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pass
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try:
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res = Get1Resource(RESTYPE, RESID)
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res.RmveResource()
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except Error:
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pass
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# Create the raw data for the resource from the code object
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data = marshal.dumps(code)
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del code
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data = (MAGIC + '\0\0\0\0') + data
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# Create the resource and write it
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id = 0
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while id < 128:
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id = Unique1ID(RESTYPE)
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res = Resource(data)
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res.AddResource(RESTYPE, RESID, RESNAME)
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# XXX Are the following two calls needed?
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res.AddResource(RESTYPE, id, RESNAME)
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res.WriteResource()
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res.ReleaseResource()
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# Close the resource file
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CloseResFile(fnum)
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CloseResFile(output)
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if __name__ == '__main__':
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main()
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