Initial revision
diff --git a/Demo/scripts/freeze.py b/Demo/scripts/freeze.py
new file mode 100755
index 0000000..3467ed4
--- /dev/null
+++ b/Demo/scripts/freeze.py
@@ -0,0 +1,447 @@
+#! /ufs/guido/bin/sgi/python
+
+# Given a Python script, create a binary that runs the script.
+# The binary is 100% independent of Python libraries and binaries.
+# It will not contain any Python source code -- only "compiled" Python
+# (as initialized static variables containing marshalled code objects).
+# It even does the right thing for dynamically loaded modules!
+# The module search path of the binary is set to the current directory.
+#
+# Some problems remain:
+# - It's highly non-portable, since it knows about paths and libraries
+# (there's a customization section though).
+# - You need to have the Python source tree lying around as well as
+# the "libpython.a" used to generate the Python binary.
+# - For scripts that use many modules it generates absurdly large
+# files (frozen.c and config.o as well as the final binary),
+# and is consequently rather slow.
+#
+# Caveats:
+# - The search for modules sometimes finds modules that are never
+# actually imported since the code importing them is never executed.
+# - If an imported module isn't found, you get a warning but the
+# process of freezing continues. The binary will fail if it
+# actually tries to import one of these modules.
+# - This often happens with the module 'mac', which module 'os' tries
+# to import (to determine whether it is running on a Macintosh).
+# You can ignore the warning about this.
+# - If the program dynamically reads or generates Python code and
+# executes it, this code may reference built-in or library modules
+# that aren't present in the frozen binary, and this will fail.
+# - Your program may be using external data files, e.g. compiled
+# forms definitions (*.fd). These aren't incorporated. Since
+# sys.path in the resulting binary only contains '.', if your
+# program searches its data files along sys.path (as the 'flp'
+# modules does to find its forms definitions), you may need to
+# change the program to extend the search path or instruct its users
+# to set the environment variable PYTHONPATH to point to your data
+# files.
+#
+# Usage hints:
+# - If you have a bunch of scripts that you want to freeze, instead
+# of freezing each of them separately, you might consider writing
+# a tiny main script that looks at sys.argv[0] and then imports
+# the corresponding module. You can then make links to the
+# frozen binary named after the various scripts you support.
+# Pass the additional scripts as arguments after the main script.
+# A minimal script to do this is the following.
+# import sys, posixpath
+# exec('import ' + posixpath.basename(sys.argv[0]) + '\n')
+
+
+import os
+import sys
+import regex
+import getopt
+import regsub
+import string
+import marshal
+
+# Function to join two pathnames with a slash in between
+j = os.path.join
+
+##################################
+# START OF CONFIGURATION SECTION #
+##################################
+
+# Attempt to guess machine architecture
+if os.path.exists('/usr/lib/libgl_s'): ARCH = 'sgi'
+else: ARCH = 'sun4'
+
+# Site parametrizations (change to match your site)
+CC = 'cc' # C compiler
+TOP = '/ufs/guido/src' # Parent of all source trees
+PYTHON = j(TOP, 'python') # Top of the Python source tree
+SRC = j(PYTHON, 'src') # Python source directory
+BLD = j(PYTHON, 'build.' + ARCH) # Python build directory
+#BLD = SRC # Use this if you build in SRC
+
+# Other packages (change to match your site)
+DL = j(TOP, 'dl') # Top of the dl source tree
+DL_DLD = j(TOP, 'dl-dld') # The dl-dld source directory
+DLD = j(TOP, 'dld-3.2.3') # The dld source directory
+FORMS = j(TOP, 'forms') # Top of the FORMS source tree
+STDWIN = j(TOP, 'stdwin') # Top of the STDWIN source tree
+READLINE = j(TOP, 'readline.' + ARCH) # Top of the GNU Readline source tree
+SUN_X11 = '/usr/local/X11R5/lib/libX11.a'
+
+# File names (usually no need to change)
+LIBP = j(BLD, 'libpython.a') # Main Python library
+CONFIG = j(SRC, 'config.c') # Configuration source file
+FMAIN = j(SRC, 'frozenmain.c') # Special main source file
+
+# Libraries needed when linking. First tuple item is built-in module
+# for which it is needed (or '*' for always), rest are ld arguments.
+# There is a separate list per architecture.
+libdeps_sgi = [ \
+ ('stdwin', j(STDWIN, 'Build/' + ARCH + '/x11/lib/lib.a')), \
+ ('fl', j(FORMS, 'FORMS/libforms.a'), '-lfm_s'), \
+ ('*', j(READLINE, 'libreadline.a')), \
+ ('*', '-lm'), \
+ ('*', '-lsun'), \
+ ('al', '-laudio'), \
+ ('sv', '-lsvideo', '-lXext'), \
+ ('cd', '-lcdaudio', '-lds'), \
+ ('cl', '-lcl'), \
+ ('imgfile', '-limage', '-lgutil', '-lm'), \
+ ('*', j(DL, 'libdl.a'), '-lmld'), \
+ ('*', '-lmpc'), \
+ ('fm', '-lfm_s'), \
+ ('gl', '-lgl_s'), \
+ ('*', '-lX11_s'), \
+ ('*', '-ltermcap'), \
+ ('*', '-lc_s'), \
+ ]
+libdeps_sun4 = [ \
+ ('*', '-Bstatic'), \
+ ('stdwin', j(STDWIN, 'Build/' + ARCH + '/x11/lib/lib.a')), \
+ ('*', j(READLINE, 'libreadline.a')), \
+ ('*', '-lm'), \
+ ('*', j(DL_DLD,'libdl.a'), j(DLD,'libdld.a')), \
+ ('*', SUN_X11), \
+ ('*', '-ltermcap'), \
+ ('*', '-lc'), \
+ ]
+libdeps = eval('libdeps_' + ARCH)
+
+################################
+# END OF CONFIGURATION SECTION #
+################################
+
+# Exception used when scanfile fails
+NoSuchFile = 'NoSuchFile'
+
+# Global options
+quiet = 0 # -q
+verbose = 0 # -v
+noexec = 0 # -n
+nowrite = 0 # -N
+ofile = 'a.out' # -o file
+
+# Main program -- argument parsing etc.
+def main():
+ global quiet, verbose, noexec, nowrite, ofile
+ try:
+ opts, args = getopt.getopt(sys.argv[1:], 'nNo:qv')
+ except getopt.error, msg:
+ usage(str(msg))
+ sys.exit(2)
+ for o, a in opts:
+ if o == '-n': noexec = 1
+ if o == '-N': nowrite = 1
+ if o == '-o': ofile = a
+ if o == '-q': verbose = 0; quiet = 1
+ if o == '-v': verbose = verbose + 1; quiet = 0
+ if len(args) < 1:
+ usage('please pass at least one file argument')
+ sys.exit(2)
+ process(args[0], args[1:])
+
+# Print usage message to stderr
+def usage(*msgs):
+ sys.stdout = sys.stderr
+ for msg in msgs: print msg
+ print 'Usage: freeze [options] scriptfile [modulefile ...]'
+ print '-n : generate the files but don\'t compile and link'
+ print '-N : don\'t write frozen.c (do compile unless -n given)'
+ print '-o file : binary output file (default a.out)'
+ print '-q : quiet (no messages at all except errors)'
+ print '-v : verbose (lots of extra messages)'
+
+# Process the script file
+def process(filename, addmodules):
+ global noexec
+ #
+ if not quiet: print 'Computing needed modules ...'
+ todo = {}
+ todo['__main__'] = filename
+ for name in addmodules:
+ mod = os.path.basename(name)
+ if mod[-3:] == '.py': mod = mod[:-3]
+ todo[mod] = name
+ try:
+ dict = closure(todo)
+ except NoSuchFile, filename:
+ sys.stderr.write('Can\'t open file %s\n' % filename)
+ sys.exit(1)
+ #
+ mods = dict.keys()
+ mods.sort()
+ #
+ if verbose:
+ print '%-15s %s' % ('Module', 'Filename')
+ for mod in mods:
+ print '%-15s %s' % (`mod`, dict[mod])
+ #
+ if not quiet: print 'Looking for dynamically linked modules ...'
+ dlmodules = []
+ objs = []
+ libs = []
+ for mod in mods:
+ if dict[mod][-2:] == '.o':
+ if verbose: print 'Found', mod, dict[mod]
+ dlmodules.append(mod)
+ objs.append(dict[mod])
+ libsname = dict[mod][:-2] + '.libs'
+ try:
+ f = open(libsname, 'r')
+ except IOError:
+ f = None
+ if f:
+ libtext = f.read()
+ f.close()
+ for lib in string.split(libtext):
+ if lib in libs: libs.remove(lib)
+ libs.append(lib)
+ #
+ if not nowrite:
+ if not quiet: print 'Writing frozen.c ...'
+ writefrozen('frozen.c', dict)
+ else:
+ if not quiet: print 'NOT writing frozen.c ...'
+ #
+ if not dlmodules:
+ config = CONFIG
+ if not quiet: print 'Using', config, '...'
+ else:
+ config = 'config.c'
+ if nowrite:
+ if not quiet: print 'NOT writing config.c ...'
+ else:
+ if not quiet:
+ print 'Writing config.c with dl modules ...'
+ f = open(CONFIG, 'r')
+ g = open(config, 'w')
+ m1 = regex.compile('-- ADDMODULE MARKER 1 --')
+ m2 = regex.compile('-- ADDMODULE MARKER 2 --')
+ while 1:
+ line = f.readline()
+ if not line: break
+ g.write(line)
+ if m1.search(line) >= 0:
+ if verbose: print 'Marker 1 ...'
+ for mod in dlmodules:
+ g.write('extern void init' + \
+ mod + '();\n')
+ if m2.search(line) >= 0:
+ if verbose: print 'Marker 2 ...'
+ for mod in dlmodules:
+ g.write('{"' + mod + \
+ '", init' + mod + '},\n')
+ #
+ if not quiet: print 'Readying for compilation ...'
+ defs = ['-DUSE_FROZEN', '-DPYTHONPATH=\'"."\'']
+ for mod in dict.keys():
+ if dict[mod] == '<builtin>' and mod <> 'sys':
+ defs.append('-DUSE_' + string.upper(mod))
+ #
+ incs = ['-I.', '-I' + SRC]
+ if dict.has_key('stdwin'):
+ incs.append('-I' + j(STDWIN, 'H'))
+ #
+ srcs = [config, FMAIN]
+ #
+ libs.append(LIBP)
+ for item in libdeps:
+ m = item[0]
+ if m == '*' or dict.has_key(m):
+ for l in item[1:]:
+ if l in libs: libs.remove(l)
+ libs.append(l)
+ #
+ sts = 0
+ #
+ cmd = CC + ' -c'
+ cmd = cmd + ' ' + string.join(defs)
+ cmd = cmd + ' ' + string.join(incs)
+ cmd = cmd + ' ' + string.join(srcs)
+ print cmd
+ #
+ if not noexec:
+ sts = os.system(cmd)
+ if sts:
+ print 'Exit status', sts, '-- turning on -n'
+ noexec = 1
+ #
+ for s in srcs:
+ s = os.path.basename(s)
+ if s[-2:] == '.c': s = s[:-2]
+ o = s + '.o'
+ objs.insert(0, o)
+ #
+ cmd = CC
+ cmd = cmd + ' ' + string.join(objs)
+ cmd = cmd + ' ' + string.join(libs)
+ cmd = cmd + ' -o ' + ofile
+ print cmd
+ #
+ if not noexec:
+ sts = os.system(cmd)
+ if sts:
+ print 'Exit status', sts
+ else:
+ print 'Done.'
+ #
+ if not quiet: print 'Note: consider this:'; print 'strip', ofile
+ #
+ sys.exit(sts)
+
+
+# Generate code for a given module
+def makecode(filename):
+ if filename[-2:] == '.o':
+ return None
+ try:
+ f = open(filename, 'r')
+ except IOError:
+ return None
+ if verbose: print 'Making code from', filename, '...'
+ text = f.read()
+ code = compile(text, filename, 'exec')
+ f.close()
+ return marshal.dumps(code)
+
+
+# Write the C source file containing the frozen Python code
+def writefrozen(filename, dict):
+ f = open(filename, 'w')
+ codelist = []
+ for mod in dict.keys():
+ codestring = makecode(dict[mod])
+ if codestring is not None:
+ codelist.append((mod, codestring))
+ write = sys.stdout.write
+ save_stdout = sys.stdout
+ try:
+ sys.stdout = f
+ for mod, codestring in codelist:
+ if verbose:
+ write('Writing initializer for %s\n'%mod)
+ print 'static char M_' + mod + '[' + \
+ str(len(codestring)) + '+1] = {'
+ for i in range(0, len(codestring), 16):
+ for c in codestring[i:i+16]:
+ print str(ord(c)) + ',',
+ print
+ print '};'
+ print 'struct frozen {'
+ print ' char *name;'
+ print ' char *code;'
+ print ' int size;'
+ print '} frozen_modules[] = {'
+ for mod, codestring in codelist:
+ print ' {"' + mod + '",',
+ print 'M_' + mod + ',',
+ print str(len(codestring)) + '},'
+ print ' {0, 0, 0} /* sentinel */'
+ print '};'
+ finally:
+ sys.stdout = save_stdout
+ f.close()
+
+
+# Determine the names and filenames of the modules imported by the
+# script, recursively. This is done by scanning for lines containing
+# import statements. (The scanning has only superficial knowledge of
+# Python syntax and no knowledge of semantics, so in theory the result
+# may be incorrect -- however this is quite unlikely if you don't
+# intentionally obscure your Python code.)
+
+# Compute the closure of scanfile() -- special first file because of script
+def closure(todo):
+ done = {}
+ while todo:
+ newtodo = {}
+ for modname in todo.keys():
+ if not done.has_key(modname):
+ filename = todo[modname]
+ if filename is None:
+ filename = findmodule(modname)
+ done[modname] = filename
+ if filename in ('<builtin>', '<unknown>'):
+ continue
+ modules = scanfile(filename)
+ for m in modules:
+ if not done.has_key(m):
+ newtodo[m] = None
+ todo = newtodo
+ return done
+
+# Scan a file looking for import statements
+importstr = '\(^\|:\)[ \t]*import[ \t]+\([a-zA-Z0-9_, \t]+\)'
+fromstr = '\(^\|:\)[ \t]*from[ \t]+\([a-zA-Z0-9_]+\)[ \t]+import[ \t]+'
+isimport = regex.compile(importstr)
+isfrom = regex.compile(fromstr)
+def scanfile(filename):
+ allmodules = {}
+ try:
+ f = open(filename, 'r')
+ except IOError, msg:
+ raise NoSuchFile, filename
+ while 1:
+ line = f.readline()
+ if not line: break # EOF
+ while line[-2:] == '\\\n': # Continuation line
+ line = line[:-2] + ' '
+ line = line + f.readline()
+ if isimport.search(line) >= 0:
+ rawmodules = isimport.group(2)
+ modules = string.splitfields(rawmodules, ',')
+ for i in range(len(modules)):
+ modules[i] = string.strip(modules[i])
+ elif isfrom.search(line) >= 0:
+ modules = [isfrom.group(2)]
+ else:
+ continue
+ for mod in modules:
+ allmodules[mod] = None
+ f.close()
+ return allmodules.keys()
+
+# Find the file containing a module, given its name; None if not found
+builtins = sys.builtin_module_names + ['sys']
+def findmodule(modname):
+ if modname in builtins: return '<builtin>'
+ for dirname in sys.path:
+ dlfullname = os.path.join(dirname, modname + 'module.o')
+ try:
+ f = open(dlfullname, 'r')
+ except IOError:
+ f = None
+ if f:
+ f.close()
+ return dlfullname
+ fullname = os.path.join(dirname, modname + '.py')
+ try:
+ f = open(fullname, 'r')
+ except IOError:
+ continue
+ f.close()
+ return fullname
+ if not quiet:
+ sys.stderr.write('Warning: module %s not found\n' % modname)
+ return '<unknown>'
+
+
+# Call the main program
+main()