Anonymous avatar Anonymous committed d1fb428

Add scripts for working with the User's Guide homebrew XML format.

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Files changed (3)

+#!/bin/sh
+
+if test $# -eq 0; then
+    for f in doc/user/*.in; do
+        sgml=doc/user/`basename $f .in`.sgml
+        echo $f:
+        python bin/sconsoutput.py $f | diff $DIFFFLAGS $sgml -
+    done
+else
+    for a in $*; do
+        f=doc/user/$a.in
+        sgml=doc/user/$a.sgml
+        echo $f:
+        python bin/sconsoutput.py $f | diff $DIFFFLAGS $sgml -
+    done
+fi
+#!/bin/sh
+
+if test $# -eq 0; then
+    for f in doc/user/*.in; do
+        sgml=doc/user/`basename $f .in`.sgml
+        echo $f:
+        python bin/sconsoutput.py $f > $sgml
+    done
+else
+    for a in $*; do
+        f=doc/user/$a.in
+        sgml=doc/user/$a.sgml
+        echo $f:
+        python bin/sconsoutput.py $f > $sgml
+    done
+fi

bin/sconsoutput.py

+#!/usr/bin/env python2
+
+#
+# Copyright (c) 2003 Steven Knight
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "src/sconsoutput.py 0.D003 2003/09/22 22:17:34 software"
+
+#
+# sconsoutput.py -   an SGML preprocessor for capturing SCons output
+#                    and inserting it into examples in our DocBook
+#                    documentation
+#
+# This script looks for some SGML tags that describe SCons example
+# configurations and commands to execute in those configurations, and
+# uses TestCmd.py to execute the commands and insert the output from
+# those commands into the SGML that we output.  This way, we can run a
+# script and update all of our example documentation output without
+# a lot of laborious by-hand checking.
+#
+# An "SCons example" looks like this, and essentially describes a set of
+# input files (program source files as well as SConscript files):
+#
+#       <scons_example name="ex1">
+#         <file name="SConstruct" printme="1">
+#           env = Environment()
+#           env.Program('foo')
+#         </file>
+#         <file name="foo.c">
+#           int main() { printf("foo.c\n"); }
+#         </file>
+#       </scons_example>
+#
+# The <file> contents within the <scons_example> tag will get written
+# into a temporary directory whenever example output needs to be
+# generated.  By default, the <file> contents are not inserted into text
+# directly, unless you set the "printme" attribute on one or more files,
+# in which case they will get inserted within a <programlisting> tag.
+# This makes it easy to define the example at the appropriate
+# point in the text where you intend to show the SConstruct file.
+#
+# Note that you should usually give the <scons_example> a "name"
+# attribute so that you can refer to the example configuration later to
+# run SCons and generate output.
+#
+# If you just want to show a file's contents without worry about running
+# SCons, there's a shorter <sconstruct> tag:
+#
+#       <sconstruct>
+#         env = Environment()
+#         env.Program('foo')
+#       </sconstruct>
+#
+# This is essentially equivalent to <scons_example><file printme="1">,
+# but it's more straightforward.
+#
+# SCons output is generated from the following sort of tag:
+#
+#       <scons_output example="ex1" os="posix">
+#         <command>scons -Q foo</command>
+#         <command>scons -Q foo</command>
+#       </scons_output>
+#
+# You tell it which example to use with the "example" attribute, and
+# then give it a list of <command> tags to execute.  You can also supply
+# an "os" tag, which specifies the type of operating system this example
+# is intended to show; if you omit this, default value is "posix".
+#
+# The generated SGML will show the command line (with the appropriate
+# command-line prompt for the operating system), execute the command in
+# a temporary directory with the example files, capture the standard
+# output from SCons, and insert it into the text as appropriate.
+# Error output gets passed through to your error output so you
+# can see if there are any problems executing the command.
+#
+
+import os
+import os.path
+import re
+import sgmllib
+import string
+import sys
+import time
+
+sys.path.append(os.path.join(os.getcwd(), 'etc'))
+sys.path.append(os.path.join(os.getcwd(), 'build', 'etc'))
+
+scons_py = os.path.join('bootstrap', 'src', 'script', 'scons.py')
+if not os.path.exists(scons_py):
+    scons_py = os.path.join('src', 'script', 'scons.py')
+
+scons_lib_dir = os.path.join(os.getcwd(), 'bootstrap', 'src', 'engine')
+if not os.path.exists(scons_lib_dir):
+    scons_lib_dir = os.path.join(os.getcwd(), 'src', 'engine')
+
+os.environ['SCONS_LIB_DIR'] = scons_lib_dir
+
+import TestCmd
+
+# The regular expression that identifies entity references in the
+# standard sgmllib omits the underscore from the legal characters.
+# Override it with our own regular expression that adds underscore.
+sgmllib.entityref = re.compile('&([a-zA-Z][-_.a-zA-Z0-9]*)[^-_a-zA-Z0-9]')
+
+# Classes for collecting different types of data we're interested in.
+class DataCollector:
+    """Generic class for collecting data between a start tag and end
+    tag.  We subclass for various types of tags we care about."""
+    def __init__(self):
+        self.data = ""
+    def afunc(self, data):
+        self.data = self.data + data
+
+class Example(DataCollector):
+    """An SCons example.  This is essentially a list of files that
+    will get written to a temporary directory to collect output
+    from one or more SCons runs."""
+    def __init__(self):
+        DataCollector.__init__(self)
+        self.files = []
+        self.dirs = []
+
+class File(DataCollector):
+    """A file, that will get written out to a temporary directory
+    for one or more SCons runs."""
+    def __init__(self, name):
+        DataCollector.__init__(self)
+        self.name = name
+
+class Directory(DataCollector):
+    """A directory, that will get created in a temporary directory
+    for one or more SCons runs."""
+    def __init__(self, name):
+        DataCollector.__init__(self)
+        self.name = name
+
+class Output(DataCollector):
+    """Where the command output goes.  This is essentially
+    a list of commands that will get executed."""
+    def __init__(self):
+        DataCollector.__init__(self)
+        self.commandlist = []
+
+class Command(DataCollector):
+    """A tag for where the command output goes.  This is essentially
+    a list of commands that will get executed."""
+    def __init__(self):
+        DataCollector.__init__(self)
+        self.output = None
+
+Prompt = {
+    'posix' : '% ',
+    'win32' : 'C:\\>'
+}
+
+# The magick SCons hackery that makes this work.
+#
+# So that our examples can still use the default SConstruct file, we
+# actually feed the following into SCons via stdin and then have it
+# SConscript() the SConstruct file.  This stdin wrapper creates a set
+# of ToolSurrogates for the tools for the appropriate platform.  These
+# Surrogates print output like the real tools and behave like them
+# without actually having to be on the right platform or have the right
+# tool installed.
+#
+# The upshot:  The wrapper transparently changes the world out from
+# under the top-level SConstruct file in an example just so we can get
+# the command output.
+
+Stdin = """\
+import os
+import re
+import string
+import SCons.Action
+import SCons.Defaults
+import SCons.Node.FS
+
+platform = '%s'
+
+Sep = {
+    'posix' : '/',
+    'win32' : '\\\\',
+}[platform]
+
+
+#  Slip our own __str__() method into the EntryProxy class used to expand
+#  $TARGET{S} and $SOURCE{S} to translate the path-name separators from
+#  what's appropriate for the system we're running on to what's appropriate
+#  for the example system.
+orig = SCons.Node.FS.EntryProxy
+class MyEntryProxy(orig):
+    def __str__(self):
+        return string.replace(str(self._Proxy__subject), os.sep, Sep)
+SCons.Node.FS.EntryProxy = MyEntryProxy
+
+# Slip our own RDirs() method into the Node.FS.File class so that the
+# expansions of $_{CPPINC,F77INC,LIBDIR}FLAGS will have the path-name
+# separators translated from what's appropriate for the system we're
+# running on to what's appropriate for the example system.
+orig_RDirs = SCons.Node.FS.File.RDirs
+def my_RDirs(self, pathlist, orig_RDirs=orig_RDirs):
+    return map(lambda x: string.replace(str(x), os.sep, Sep),
+               orig_RDirs(self, pathlist))
+SCons.Node.FS.File.RDirs = my_RDirs
+
+class Curry:
+    def __init__(self, fun, *args, **kwargs):
+        self.fun = fun
+        self.pending = args[:]
+        self.kwargs = kwargs.copy()
+
+    def __call__(self, *args, **kwargs):
+        if kwargs and self.kwargs:
+            kw = self.kwargs.copy()
+            kw.update(kwargs)
+        else:
+            kw = kwargs or self.kwargs
+
+        return apply(self.fun, self.pending + args, kw)
+
+def Str(target, source, env, cmd=""):
+    return env.subst(cmd, target=target, source=source)
+
+class ToolSurrogate:
+    def __init__(self, tool, variable, func, varlist):
+        self.tool = tool
+        if not type(variable) is type([]):
+            variable = [variable]
+        self.variable = variable
+        self.func = func
+        self.varlist = varlist
+    def __call__(self, env):
+        t = Tool(self.tool)
+        t.generate(env)
+        for v in self.variable:
+            orig = env[v]
+            try:
+                strfunction = orig.strfunction
+            except AttributeError:
+                strfunction = Curry(Str, cmd=orig)
+            # Don't call Action() through its global function name, because
+            # that leads to infinite recursion in trying to initialize the
+            # Default Environment.
+            env[v] = SCons.Action.Action(self.func,
+                                         strfunction=strfunction,
+                                         varlist=self.varlist)
+
+def Null(target, source, env):
+    pass
+
+def Cat(target, source, env):
+    target = str(target[0])
+    f = open(target, "wb")
+    for src in map(str, source):
+        f.write(open(src, "rb").read())
+    f.close()
+
+def CCCom(target, source, env):
+    target = str(target[0])
+    f = open(target, "wb")
+    for src in map(str, source):
+        lines = open(src, "rb").readlines()
+        lines = filter(lambda l: l[:11] != "STRIP CCCOM", lines)
+        f.write(string.join(lines))
+    f.close()
+
+public_class_re = re.compile('^public class (\S+)', re.MULTILINE)
+
+def JavaCCom(target, source, env):
+    # This is a fake Java compiler that just looks for
+    #   public class FooBar
+    # lines in the source file(s) and spits those out
+    # to .class files named after the class.
+    tlist = map(str, target)
+    not_copied = {}
+    for t in tlist:
+       not_copied[t] = 1
+    for src in map(str, source):
+        contents = open(src, "rb").read()
+        classes = public_class_re.findall(contents)
+        for c in classes:
+            for t in filter(lambda x: string.find(x, c) != -1, tlist):
+                open(t, "wb").write(contents)
+                del not_copied[t]
+    for t in not_copied.keys():
+        open(t, "wb").write("\\n")
+
+def JavaHCom(target, source, env):
+    tlist = map(str, target)
+    slist = map(str, source)
+    for t, s in zip(tlist, slist):
+        open(t, "wb").write(open(s, "rb").read())
+
+def find_class_files(arg, dirname, names):
+    class_files = filter(lambda n: n[-6:] == '.class', names)
+    paths = map(lambda n, d=dirname: os.path.join(d, n), class_files)
+    arg.extend(paths)
+
+def JarCom(target, source, env):
+    target = str(target[0])
+    class_files = []
+    for src in map(str, source):
+        os.path.walk(src, find_class_files, class_files)
+    f = open(target, "wb")
+    for cf in class_files:
+        f.write(open(cf, "rb").read())
+    f.close()
+
+# XXX Adding COLOR, COLORS and PACKAGE to the 'cc' varlist(s) by hand
+# here is bogus.  It's for the benefit of doc/user/command-line.in, which
+# uses examples that want  to rebuild based on changes to these variables.
+# It would be better to figure out a way to do it based on the content of
+# the generated command-line, or else find a way to let the example markup
+# language in doc/user/command-line.in tell this script what variables to
+# add, but that's more difficult than I want to figure out how to do right
+# now, so let's just use the simple brute force approach for the moment.
+
+ToolList = {
+    'posix' :   [('cc', ['CCCOM', 'SHCCCOM'], CCCom, ['CCFLAGS', 'CPPDEFINES', 'COLOR', 'COLORS', 'PACKAGE']),
+                 ('link', ['LINKCOM', 'SHLINKCOM'], Cat, []),
+                 ('ar', 'ARCOM', Cat, []),
+                 ('tar', 'TARCOM', Null, []),
+                 ('zip', 'ZIPCOM', Null, []),
+                 ('BitKeeper', 'BITKEEPERCOM', Cat, []),
+                 ('CVS', 'CVSCOM', Cat, []),
+                 ('RCS', 'RCS_COCOM', Cat, []),
+                 ('SCCS', 'SCCSCOM', Cat, []),
+                 ('javac', 'JAVACCOM', JavaCCom, []),
+                 ('javah', 'JAVAHCOM', JavaHCom, []),
+                 ('jar', 'JARCOM', JarCom, []),
+                 ('rmic', 'RMICCOM', Cat, []),
+                ],
+    'win32' :   [('msvc', ['CCCOM', 'SHCCCOM'], CCCom, ['CCFLAGS', 'CPPDEFINES', 'COLOR', 'COLORS', 'PACKAGE']),
+                 ('mslink', ['LINKCOM', 'SHLINKCOM'], Cat, []),
+                 ('mslib', 'ARCOM', Cat, []),
+                 ('tar', 'TARCOM', Null, []),
+                 ('zip', 'ZIPCOM', Null, []),
+                 ('BitKeeper', 'BITKEEPERCOM', Cat, []),
+                 ('CVS', 'CVSCOM', Cat, []),
+                 ('RCS', 'RCS_COCOM', Cat, []),
+                 ('SCCS', 'SCCSCOM', Cat, []),
+                 ('javac', 'JAVACCOM', JavaCCom, []),
+                 ('javah', 'JAVAHCOM', JavaHCom, []),
+                 ('jar', 'JARCOM', JarCom, []),
+                 ('rmic', 'RMICCOM', Cat, []),
+                ],
+}
+
+tools = map(lambda t: apply(ToolSurrogate, t), ToolList[platform])
+
+def surrogate_spawn(sh, escape, cmd, args, env):
+    pass
+
+def surrogate_pspawn(sh, escape, cmd, args, env, stdout, stderr):
+    pass
+
+SCons.Defaults.ConstructionEnvironment.update({
+    'PLATFORM' : platform,
+    'TOOLS'    : tools,
+    'SPAWN'    : surrogate_spawn,
+    'PSPAWN'   : surrogate_pspawn,
+})
+
+SConscript('SConstruct')
+"""
+
+# "Commands" that we will execute in our examples.
+def command_scons(args, c, test, osname):
+    save_vals = {}
+    delete_keys = []
+    try:
+        ce = c.environment
+    except AttributeError:
+        pass
+    else:
+        for arg in string.split(c.environment):
+            key, val = string.split(arg, '=')
+            try:
+                save_vals[key] = os.environ[key]
+            except KeyError:
+                delete_keys.append(key)
+            os.environ[key] = val
+    test.run(interpreter = sys.executable,
+             program = scons_py,
+             arguments = '-f - ' + string.join(args),
+             chdir = test.workpath('WORK'),
+             stdin = Stdin % osname)
+    os.environ.update(save_vals)
+    for key in delete_keys:
+        del(os.environ[key])
+    out = string.replace(test.stdout(), test.workpath('ROOT'), '')
+    lines = string.split(out, '\n')
+    if lines:
+        while lines[-1] == '':
+            lines = lines[:-1]
+    #err = test.stderr()
+    #if err:
+    #    sys.stderr.write(err)
+    return lines
+
+def command_touch(args, c, test, osname):
+    time.sleep(1)
+    for file in args:
+        if not os.path.isabs(file):
+            file = os.path.join(test.workpath('WORK'), file)
+        if not os.path.exists(file):
+            open(file, 'wb')
+        os.utime(file, None)
+    return []
+
+def command_edit(args, c, test, osname):
+    try:
+        add_string = c.edit[:]
+    except AttributeError:
+        add_string = 'void edit(void) { ; }\n'
+    if add_string[-1] != '\n':
+        add_string = add_string + '\n'
+    for file in args:
+        if not os.path.isabs(file):
+            file = os.path.join(test.workpath('WORK'), file)
+        contents = open(file, 'rb').read()
+        open(file, 'wb').write(contents + add_string)
+    return []
+
+def command_ls(args, c, test, osname):
+    def ls(a):
+        files = os.listdir(a)
+        files = filter(lambda x: x[0] != '.', files)
+        files.sort()
+        return [string.join(files, '  ')]
+    if args:
+        l = []
+        for a in args:
+            l.extend(ls(test.workpath('WORK', a)))
+        return l
+    else:
+        return ls(test.workpath('WORK'))
+
+CommandDict = {
+    'scons' : command_scons,
+    'touch' : command_touch,
+    'edit'  : command_edit,
+    'ls'    : command_ls,
+}
+
+def ExecuteCommand(args, c, t, osname):
+    try:
+        func = CommandDict[args[0]]
+    except KeyError:
+        func = lambda args, c, t, osname: []
+    return func(args[1:], c, t, osname)
+
+class MySGML(sgmllib.SGMLParser):
+    """A subclass of the standard Python 2.2 sgmllib SGML parser.
+
+    This extends the standard sgmllib parser to recognize, and do cool
+    stuff with, the added tags that describe our SCons examples,
+    commands, and other stuff.
+
+    Note that this doesn't work with the 1.5.2 sgmllib module, because
+    that didn't have the ability to work with ENTITY declarations.
+    """
+    def __init__(self):
+        sgmllib.SGMLParser.__init__(self)
+        self.examples = {}
+        self.afunclist = []
+
+    # The first set of methods here essentially implement pass-through
+    # handling of most of the stuff in an SGML file.  We're really
+    # only concerned with the tags specific to SCons example processing,
+    # the methods for which get defined below.
+
+    def handle_data(self, data):
+        try:
+            f = self.afunclist[-1]
+        except IndexError:
+            sys.stdout.write(data)
+        else:
+            f(data)
+
+    def handle_comment(self, data):
+        sys.stdout.write('<!--' + data + '-->')
+
+    def handle_decl(self, data):
+        sys.stdout.write('<!' + data + '>')
+
+    def unknown_starttag(self, tag, attrs):
+        try:
+            f = self.example.afunc
+        except AttributeError:
+            f = sys.stdout.write
+        if not attrs:
+            f('<' + tag + '>')
+        else:
+            f('<' + tag)
+            for name, value in attrs:
+                f(' ' + name + '=' + '"' + value + '"')
+            f('>')
+
+    def unknown_endtag(self, tag):
+        sys.stdout.write('</' + tag + '>')
+
+    def unknown_entityref(self, ref):
+        sys.stdout.write('&' + ref + ';')
+
+    def unknown_charref(self, ref):
+        sys.stdout.write('&#' + ref + ';')
+
+    # Here is where the heavy lifting begins.  The following methods
+    # handle the begin-end tags of our SCons examples.
+
+    def start_scons_example(self, attrs):
+        t = filter(lambda t: t[0] == 'name', attrs)
+        if t:
+            name = t[0][1]
+            try:
+               e = self.examples[name]
+            except KeyError:
+               e = self.examples[name] = Example()
+        else:
+            e = Example()
+        for name, value in attrs:
+            setattr(e, name, value)
+        self.e = e
+        self.afunclist.append(e.afunc)
+
+    def end_scons_example(self):
+        e = self.e
+        files = filter(lambda f: f.printme, e.files)
+        if files:
+            sys.stdout.write('<programlisting>')
+            for f in files:
+                if f.printme:
+                    i = len(f.data) - 1
+                    while f.data[i] == ' ':
+                        i = i - 1
+                    output = string.replace(f.data[:i+1], '__ROOT__', '')
+                    output = string.replace(output, '<', '&lt;')
+                    output = string.replace(output, '>', '&gt;')
+                    sys.stdout.write(output)
+            if e.data and e.data[0] == '\n':
+                e.data = e.data[1:]
+            sys.stdout.write(e.data + '</programlisting>')
+        delattr(self, 'e')
+        self.afunclist = self.afunclist[:-1]
+
+    def start_file(self, attrs):
+        try:
+            e = self.e
+        except AttributeError:
+            self.error("<file> tag outside of <scons_example>")
+        t = filter(lambda t: t[0] == 'name', attrs)
+        if not t:
+            self.error("no <file> name attribute found")
+        try:
+            e.prefix
+        except AttributeError:
+            e.prefix = e.data
+            e.data = ""
+        f = File(t[0][1])
+        f.printme = None
+        for name, value in attrs:
+            setattr(f, name, value)
+        e.files.append(f)
+        self.afunclist.append(f.afunc)
+
+    def end_file(self):
+        self.e.data = ""
+        self.afunclist = self.afunclist[:-1]
+
+    def start_directory(self, attrs):
+        try:
+            e = self.e
+        except AttributeError:
+            self.error("<directory> tag outside of <scons_example>")
+        t = filter(lambda t: t[0] == 'name', attrs)
+        if not t:
+            self.error("no <directory> name attribute found")
+        try:
+            e.prefix
+        except AttributeError:
+            e.prefix = e.data
+            e.data = ""
+        d = Directory(t[0][1])
+        for name, value in attrs:
+            setattr(d, name, value)
+        e.dirs.append(d)
+        self.afunclist.append(d.afunc)
+
+    def end_directory(self):
+        self.e.data = ""
+        self.afunclist = self.afunclist[:-1]
+
+    def start_scons_example_file(self, attrs):
+        t = filter(lambda t: t[0] == 'example', attrs)
+        if not t:
+            self.error("no <scons_example_file> example attribute found")
+        exname = t[0][1]
+        try:
+            e = self.examples[exname]
+        except KeyError:
+            self.error("unknown example name '%s'" % exname)
+        fattrs = filter(lambda t: t[0] == 'name', attrs)
+        if not fattrs:
+            self.error("no <scons_example_file> name attribute found")
+        fname = fattrs[0][1]
+        f = filter(lambda f, fname=fname: f.name == fname, e.files)
+        if not f:
+            self.error("example '%s' does not have a file named '%s'" % (exname, fname))
+        self.f = f[0]
+
+    def end_scons_example_file(self):
+        f = self.f
+        sys.stdout.write('<programlisting>')
+        sys.stdout.write(f.data + '</programlisting>')
+        delattr(self, 'f')
+
+    def start_scons_output(self, attrs):
+        t = filter(lambda t: t[0] == 'example', attrs)
+        if not t:
+            self.error("no <scons_output> example attribute found")
+        exname = t[0][1]
+        try:
+            e = self.examples[exname]
+        except KeyError:
+            self.error("unknown example name '%s'" % exname)
+        # Default values for an example.
+        o = Output()
+        o.preserve = None
+        o.os = 'posix'
+        o.e = e
+        # Locally-set.
+        for name, value in attrs:
+            setattr(o, name, value)
+        self.o = o
+        self.afunclist.append(o.afunc)
+
+    def end_scons_output(self):
+        # The real raison d'etre for this script, this is where we
+        # actually execute SCons to fetch the output.
+        o = self.o
+        e = o.e
+        t = TestCmd.TestCmd(workdir='', combine=1)
+        if o.preserve:
+            t.preserve()
+        t.subdir('ROOT', 'WORK')
+        t.rootpath = string.replace(t.workpath('ROOT'), '\\', '\\\\')
+
+        for d in e.dirs:
+            dir = t.workpath('WORK', d.name)
+            if not os.path.exists(dir):
+                os.makedirs(dir)
+
+        for f in e.files:
+            i = 0
+            while f.data[i] == '\n':
+                i = i + 1
+            lines = string.split(f.data[i:], '\n')
+            i = 0
+            while lines[0][i] == ' ':
+                i = i + 1
+            lines = map(lambda l, i=i: l[i:], lines)
+            path = string.replace(f.name, '__ROOT__', t.rootpath)
+            if not os.path.isabs(path):
+                path = t.workpath('WORK', path)
+            dir, name = os.path.split(path)
+            if dir and not os.path.exists(dir):
+                os.makedirs(dir)
+            content = string.join(lines, '\n')
+            content = string.replace(content, '__ROOT__', t.rootpath)
+            path = t.workpath('WORK', path)
+            t.write(path, content)
+            if hasattr(f, 'chmod'):
+                os.chmod(path, int(f.chmod, 0))
+
+        i = len(o.prefix)
+        while o.prefix[i-1] != '\n':
+            i = i - 1
+
+        sys.stdout.write('<screen>' + o.prefix[:i])
+        p = o.prefix[i:]
+
+        for c in o.commandlist:
+            sys.stdout.write(p + Prompt[o.os])
+            d = string.replace(c.data, '__ROOT__', '')
+            sys.stdout.write('<userinput>' + d + '</userinput>\n')
+
+            e = string.replace(c.data, '__ROOT__', t.workpath('ROOT'))
+            args = string.split(e)
+            lines = ExecuteCommand(args, c, t, o.os)
+            if c.output:
+                sys.stdout.write(p + c.output + '\n')
+            elif lines:
+                sys.stdout.write(p + string.join(lines, '\n' + p) + '\n')
+
+        if o.data[0] == '\n':
+            o.data = o.data[1:]
+        sys.stdout.write(o.data + '</screen>')
+        delattr(self, 'o')
+        self.afunclist = self.afunclist[:-1]
+
+    def start_command(self, attrs):
+        try:
+            o = self.o
+        except AttributeError:
+            self.error("<command> tag outside of <scons_output>")
+        try:
+            o.prefix
+        except AttributeError:
+            o.prefix = o.data
+            o.data = ""
+        c = Command()
+        for name, value in attrs:
+            setattr(c, name, value)
+        o.commandlist.append(c)
+        self.afunclist.append(c.afunc)
+
+    def end_command(self):
+        self.o.data = ""
+        self.afunclist = self.afunclist[:-1]
+
+    def start_sconstruct(self, attrs):
+        f = File('')
+        self.f = f
+        self.afunclist.append(f.afunc)
+
+    def end_sconstruct(self):
+        f = self.f
+        sys.stdout.write('<programlisting>')
+        output = string.replace(f.data, '__ROOT__', '')
+        sys.stdout.write(output + '</programlisting>')
+        delattr(self, 'f')
+        self.afunclist = self.afunclist[:-1]
+
+# The main portion of the program itself, short and simple.
+try:
+    file = sys.argv[1]
+except IndexError:
+    file = '-'
+
+if file == '-':
+    f = sys.stdin
+else:
+    try:
+        f = open(file, 'r')
+    except IOError, msg:
+        print file, ":", msg
+        sys.exit(1)
+
+data = f.read()
+if f is not sys.stdin:
+    f.close()
+
+x = MySGML()
+for c in data:
+    x.feed(c)
+x.close()
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