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300 lines
6.8 KiB
Python
300 lines
6.8 KiB
Python
"""Create an applet from a Python script.
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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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DEBUG=0
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import sys
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sys.stdout = sys.stderr
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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 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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# 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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RESNAME = '__main__'
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# A resource with this name sets the "owner" (creator) of the destination
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# XXXX Should look for id=0
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OWNERNAME = "owner resource"
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# OpenResFile mode parameters
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READ = 1
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WRITE = 2
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def findtemplate():
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"""Locate the applet template along sys.path"""
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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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template, d1, d2 = macfs.ResolveAliasFile(template)
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break
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except (macfs.error, ValueError):
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continue
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else:
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die("Template %s not found on sys.path" % `TEMPLATE`)
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return
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template = template.as_pathname()
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return template
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def main():
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global DEBUG
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DEBUG=1
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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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template = findtemplate()
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if DEBUG:
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print 'Using template', template
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# Ask for source text if not specified in sys.argv[1:]
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if not sys.argv[1:]:
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srcfss, ok = macfs.PromptGetFile('Select Python source file:', 'TEXT')
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if not ok:
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return
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filename = srcfss.as_pathname()
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tp, tf = os.path.split(filename)
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if tf[-3:] == '.py':
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tf = tf[:-3]
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else:
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tf = tf + '.applet'
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dstfss, ok = macfs.StandardPutFile('Save application as:', tf)
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if not ok: return
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process(template, filename, dstfss.as_pathname())
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else:
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# Loop over all files to be processed
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for filename in sys.argv[1:]:
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process(template, filename, '')
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def process(template, filename, output):
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if DEBUG:
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print "Processing", `filename`, "..."
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# Read the source and compile it
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# (there's no point overwriting the destination if it has a syntax error)
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fp = open(filename)
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text = fp.read()
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fp.close()
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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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die("Syntax error in script %s" % `filename`)
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return
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# Set the destination file name
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if string.lower(filename[-3:]) == ".py":
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destname = filename[:-3]
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rsrcname = destname + '.rsrc'
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else:
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destname = filename + ".applet"
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rsrcname = filename + '.rsrc'
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if output:
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destname = output
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# Try removing the output file
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try:
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os.unlink(output)
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except os.error:
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pass
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# Create FSSpecs for the various files
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template_fss = macfs.FSSpec(template)
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template_fss, d1, d2 = macfs.ResolveAliasFile(template_fss)
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dest_fss = macfs.FSSpec(destname)
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# Copy data (not resources, yet) from the template
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tmpl = open(template, "rb")
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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 output resource fork
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try:
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output = FSpOpenResFile(dest_fss, WRITE)
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except MacOS.Error:
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if DEBUG:
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print "Creating resource fork..."
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CreateResFile(destname)
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output = FSpOpenResFile(dest_fss, WRITE)
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# Copy the resources from the target specific resource template, if any
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typesfound, ownertype = [], None
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try:
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input = FSpOpenResFile(rsrcname, READ)
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except (MacOS.Error, ValueError):
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pass
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else:
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typesfound, ownertype = copyres(input, output, [], 0)
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CloseResFile(input)
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# Check which resource-types we should not copy from the template
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skiptypes = []
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if 'SIZE' in typesfound: skiptypes.append('SIZE')
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if 'BNDL' in typesfound: skiptypes = skiptypes + ['BNDL', 'FREF', 'icl4',
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'icl8', 'ics4', 'ics8', 'ICN#', 'ics#']
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skipowner = (ownertype <> None)
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# Copy the resources from the template
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input = FSpOpenResFile(template_fss, READ)
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dummy, tmplowner = copyres(input, output, skiptypes, skipowner)
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if ownertype == None:
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ownertype = tmplowner
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CloseResFile(input)
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if ownertype == None:
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die("No owner resource found in either resource file or template")
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# Now set the creator, type and bundle bit of the destination
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dest_finfo = dest_fss.GetFInfo()
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dest_finfo.Creator = ownertype
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dest_finfo.Type = 'APPL'
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dest_finfo.Flags = dest_finfo.Flags | MACFS.kHasBundle
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dest_finfo.Flags = dest_finfo.Flags & ~MACFS.kHasBeenInited
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dest_fss.SetFInfo(dest_finfo)
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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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res.RemoveResource()
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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, id, RESNAME)
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res.WriteResource()
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res.ReleaseResource()
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# Close the output file
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CloseResFile(output)
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# Give positive feedback
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message("Applet %s created." % `destname`)
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# Copy resources between two resource file descriptors.
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# skip a resource named '__main__' or (if skipowner is set) 'Owner resource'.
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# Also skip resources with a type listed in skiptypes.
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#
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def copyres(input, output, skiptypes, skipowner):
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ctor = None
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alltypes = []
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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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if type in skiptypes:
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continue
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alltypes.append(type)
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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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lcname = string.lower(name)
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if (type, lcname) == (RESTYPE, RESNAME):
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continue # Don't copy __main__ from template
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# XXXX should look for id=0
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if lcname == OWNERNAME:
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if skipowner:
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continue # Skip this one
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else:
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ctor = type
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size = res.size
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attrs = res.GetResAttrs()
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if DEBUG:
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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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if DEBUG:
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print "Overwriting..."
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res2.RemoveResource()
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res.AddResource(type, id, name)
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res.WriteResource()
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attrs = attrs | res.GetResAttrs()
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if DEBUG:
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print "New attrs =", hex(attrs)
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res.SetResAttrs(attrs)
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UseResFile(input)
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return alltypes, ctor
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# Show a message and exit
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def die(str):
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message(str)
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sys.exit(1)
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# Show a message
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def message(str, id = 256):
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from Dlg import *
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d = GetNewDialog(id, -1)
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if not d:
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print "Error:", `str`
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print "DLOG id =", id, "not found."
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return
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tp, h, rect = d.GetDialogItem(2)
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SetDialogItemText(h, str)
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while 1:
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n = ModalDialog(None)
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if n == 1: break
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del d
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if __name__ == '__main__':
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main()
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