umake_lib.py

linux下的一款播放器

# 
# ***** BEGIN LICENSE BLOCK *****
# Source last modified: $Id: umake_lib.py,v 1.31 2004/10/12 07:04:41 hubbe Exp $
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"""This file contains common library functions, such as error output, and
base classes used by other parts of the Umake system.  Only code common
to all Umake platforms should go here."""

import os
import sys
import string
import types
import err
import bldreg
import re
import stat
import sysinfo


DEBUG=0

def fatal(text):
    """Raise a fatal exception."""
    e = err.Error()
    e.Set(text)
    raise err.error, e


def warning(text):
    """Print out a warning and exit."""
    print "UMAKE Warning: %s" % (text)


def namespace_modified(text):
    """Print out a namespace modified message."""
    print "UMAKE Namespace Modified: %s" % (text)


def debug(text):
    """Print out a debug message."""
    if DEBUG:
        print text


def listify(stuff):
    """Takes a string, tuple, list, or lists of sublists, and makes a new,
    single list out of all the strings in them."""
    
    ## input is string
    if type(stuff) == types.StringType:
        return [stuff]

    try:
        if type(stuff) == types.UnicodeType:
            return [stuff]
    except AttributeError:
        pass

    ## has to be a list or tuple
    if type(stuff) != types.ListType and type(stuff) != types.TupleType:
        return []

    list = []

    for item in stuff:
        list.extend(listify(item))

    return list


def ci_find_file(find_filename):
    """Searches the current directory for filename case-insesitive on
    case-sensitive operating systems.  Returns None if it cannot find
    the file.  There's a bug here: while we search for the filename
    in a case-insensitive way, we don't do the same for the directory."""


    if os.path.exists(find_filename):
        return find_filename

    (path, basename) = os.path.split(find_filename)

    ## os.listdir cannot take a blank path as the current dir,
    list_path = path or os.curdir
    list_path = ci_find_file(list_path)
    if not list_path:
        return None

    ## Ugly hack for OS9
    if sysinfo.host_type == "mac":
        import archive
        basename=archive.mac_name_mangler(basename)
        p=os.path.join(list_path, basename)
        if os.path.exists(p):
            return p

    find_filename = string.lower(basename)
    for filename in os.listdir(list_path):
        if find_filename == string.lower(filename):
            return os.path.join(list_path, filename)

    return None


def fix_path_mac(path):
    """Macintosh implementation of fix_path() seperated out for clarity.  This
    is called by fix_path()."""

    if not path or not len(path):
        return ""

    if ':' in path and '/' not in path and '\\' not in path:
        ## The path is already a mac path!
        return path

    path = string.replace(path, "/", ":")

    mac_path = ""
    last_backdir = 0
    last_curdir = 0

    # no directory info defaults to current dir
    if path[0] == ":":
        import macpath
        mac_path=string.split(macpath.normpath(os.getcwd()),":")[0]
    elif path[0] != ".":
        mac_path = ":"

    i = 0
    while i < len(path):
        # translate current directory
        if path[i:i+2] == ".:":
            if not last_curdir and not last_backdir:
                mac_path = mac_path + ":"

            last_curdir = 1
            i = i + 2
            continue

        # translate stepping back a directory
        if path[i:i+3] == "..:":
            if last_backdir or last_curdir:
                mac_path = mac_path + ":"
            else:
                mac_path = mac_path + "::"
                last_backdir = 1
            i = i + 3
            continue

        # append to mac_path
        mac_path = mac_path + path[i]
        i = i + 1
        last_curdir = 0
        last_backdir = 0

    return mac_path

    
def fix_path(path):
    """Takes a path which is in either POSIX or native format, and converts it
    to a native path on the running system."""

    if not path or not len(path):
        return ""
    
    if sysinfo.host_type == "mac":
        # print "fix_path_mac(%s) = > %s\n" % (path, fix_path_mac(path))
        return fix_path_mac(path)
    
    path = string.replace(path, "/", os.sep)
    return path


def SetupPlatform(platform):
    """Twek some settings in the Platform object, and run the linker class's
    set_type() method.  The .c and .cpp build rules are generated here."""
    
    ## the C & C++ compiler build rules are handled outside the
    ## platform.build_rules hash table, so we set them here since
    ## they may have been replaced in the Umakefil/*.pcf file
    import umake

    try:
        platform.build_rules[".cpp"] = umake.BuildRule(
            ".cpp", ".%s" % (platform.object_suffix), platform.cxx)
    except AttributeError: # I hate these - hubbe
        pass
        
    try:
        platform.build_rules[".c"]  = umake.BuildRule(
            ".c", ".%s" % (platform.object_suffix), platform.cc)
    except AttributeError: # I hate these - hubbe
        pass

    ## set the set_type function in the linker class; the project's target
    ## type MUST be set before this is done, and is only required for the
    ## old linker classes, which is why we don't do it for Linker2 derived
    ## linkers
    if not hasattr(platform.link, "linker2"):
        fun = None
        try:
            fun = platform.link.set_type
        except AttributeError:
            pass

        if fun:
            fun()


class SourceFile:
    """Given a the platform object, a source path, and a object output
    directory form a number of useful intermediate paths helping to deal
    with the source file."""
    
    def __init__(self, platform, path, output_dir):
        self.path = path
        (base, self.ext) = os.path.splitext(self.path)

        base = os.path.normpath(base)
        if os.path.isabs(base):
            base = string.replace(base,"\\","_")
            base = string.replace(base,":","_")
            base = string.replace(base,"/","_")
        else:
            ## Trim off any ../ from the beginning of the path
            base = string.replace(base,"\\","/")
            tmp = string.split(base, "/")
            x = 0
            while len(tmp) > x + 1:
                if tmp[x] in [ os.curdir, os.pardir ]:
                    x = x + 1
                else:
                    break
            if x:
                tmp = [ "par%d" % x ] + tmp[x:]
            base = string.join(tmp,os.sep)

        rules=platform.build_rules
        self.build_rule = rules.get(path,
                                    rules.get(os.path.basename(path),
                                              rules.get(self.ext, None)))

        if not self.build_rule:
            fatal('no build rule for extention="%s"' % (self.ext))
        
        self.obj_path = "%s%s" % (base, self.build_rule.target_suffix)
        if self.build_rule.output_dir != None:
            self.obj_path = os.path.join(self.build_rule.output_dir, self.obj_path)
        elif output_dir:
            self.obj_path = os.path.join(output_dir, self.obj_path)
                        
## file = a path relative to the source root
## returns the module name
module_from_file_cache = {}

def module_from_file(file):
    if module_from_file_cache.has_key(file):
        return module_from_file_cache[file]

    module = file
    parts = []
    root = [ ":", ".", "", "..","/","\\"]
    while 1:
        tmp = os.path.split(module)
        parts.append(tmp[1])
        if tmp[0] in root:
            break
        root.append(tmp[0])
        module = tmp[0]

    parts.reverse()
    mparts = []
    while parts:
        module=string.join(parts, "/")
        id=bldreg.get("bifmodule_path_to_id",string.lower(module),None)
        if id:
            module_from_file_cache[file]=id
            return id
        parts=parts[:-1]
    return None


## file = a path relative to the current directory
## returns the module name
def module_from_file_rel(project, file):
    if os.path.isabs(file):
        return None
    
    module = file
    parts = []
    srcroot=os.path.normpath(project.src_root_path)
    while not module in [ ":", ".", "", ".."]:
        #print "DWIM: %s (%s)" % (repr(module), repr(srcroot))
        tmp = os.path.split(module)
        parts.append(tmp[1])
        if tmp[0] == srcroot:
            parts.reverse()
            return module_from_file(string.join(parts,os.sep))
        module = tmp[0]
    return None


def GetModuleDependencies(project, modname = None):
    try:
        return project.__recursive_dependency_check_done__
    except:
        if modname == None:
            module_directory = project.module_directory()
            modname = module_from_file(module_directory)
        if not modname:
            return {}
        done = { modname:1 }
        bifdeps = [ modname ]
        for d in bifdeps:
            for n in  bldreg.get("bifmodule_deplist",string.lower(d),[]):
                n = string.lower(n)
                if not done.has_key(n):
                    bifdeps.append(n)
                    done[n]=1

        project.__recursive_dependency_check_done__ = done
        #print "dependencies %s => %s" % (repr(modname), repr(done))
        return done


# Check each path in "paths" to make sure that they come from
# modules which are included in our BIF dependency list.
def CheckModuleDependencies_rel(platform, project, type, paths):
    # I feel nice, so we check aginainst the recursive tree of
    # dependencies rather than against just the dependencies in this
    # module... /Hubbe

    module_directory = project.module_directory()
    modname = module_from_file(module_directory)

    if not modname:
        return

    done = GetModuleDependencies(project, modname)

    warnings_printed = globals().get("__umake_warnings_printed_cache__",{})
        
    for path in paths: