"""SCons.Tool.mslink

Tool-specific initialization for the Microsoft linker.

There normally shouldn't be any need to import this module directly.
It will usually be imported through the generic SCons.Tool.Tool()
selection method.

"""

#
# 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.
#

import os
import os.path

import SCons.Action
import SCons.Defaults
import SCons.Errors
import SCons.Platform.win32
import SCons.Tool
import SCons.Tool.msvc
import SCons.Tool.msvs
import SCons.Util

from .MSCommon import msvc_setup_env_once, msvc_exists

def pdbGenerator(env, target, source, for_signature):
    try:
        return ['/PDB:%s' % target[0].attributes.pdb, '/DEBUG']
    except (AttributeError, IndexError):
        return None

def _dllTargets(target, source, env, for_signature, paramtp):
    listCmd = []
    dll = env.FindIxes(target, '%sPREFIX' % paramtp, '%sSUFFIX' % paramtp)
    if dll: listCmd.append("/out:%s"%dll.get_string(for_signature))

    implib = env.FindIxes(target, 'LIBPREFIX', 'LIBSUFFIX')
    if implib: listCmd.append("/implib:%s"%implib.get_string(for_signature))

    return listCmd

def _dllSources(target, source, env, for_signature, paramtp):
    listCmd = []

    deffile = env.FindIxes(source, "WINDOWSDEFPREFIX", "WINDOWSDEFSUFFIX")
    for src in source:
        # Check explicitly for a non-None deffile so that the __cmp__
        # method of the base SCons.Util.Proxy class used for some Node
        # proxies doesn't try to use a non-existent __dict__ attribute.
        if deffile and src == deffile:
            # Treat this source as a .def file.
            listCmd.append("/def:%s" % src.get_string(for_signature))
        else:
            # Just treat it as a generic source file.
            listCmd.append(src)
    return listCmd

def windowsShlinkTargets(target, source, env, for_signature):
    return _dllTargets(target, source, env, for_signature, 'SHLIB')

def windowsShlinkSources(target, source, env, for_signature):
    return _dllSources(target, source, env, for_signature, 'SHLIB')

def _windowsLdmodTargets(target, source, env, for_signature):
    """Get targets for loadable modules."""
    return _dllTargets(target, source, env, for_signature, 'LDMODULE')

def _windowsLdmodSources(target, source, env, for_signature):
    """Get sources for loadable modules."""
    return _dllSources(target, source, env, for_signature, 'LDMODULE')

def _dllEmitter(target, source, env, paramtp):
    """Common implementation of dll emitter."""
    SCons.Tool.msvc.validate_vars(env)

    extratargets = []
    extrasources = []

    dll = env.FindIxes(target, '%sPREFIX' % paramtp, '%sSUFFIX' % paramtp)
    no_import_lib = env.get('no_import_lib', 0)

    if not dll:
        raise SCons.Errors.UserError('A shared library should have exactly one target with the suffix: %s' % env.subst('$%sSUFFIX' % paramtp))

    insert_def = env.subst("$WINDOWS_INSERT_DEF")
    if insert_def not in ['', '0', 0] and \
       not env.FindIxes(source, "WINDOWSDEFPREFIX", "WINDOWSDEFSUFFIX"):

        # append a def file to the list of sources
        extrasources.append(
            env.ReplaceIxes(dll,
                            '%sPREFIX' % paramtp, '%sSUFFIX' % paramtp,
                            "WINDOWSDEFPREFIX", "WINDOWSDEFSUFFIX"))

    version_num, suite = SCons.Tool.msvs.msvs_parse_version(env.get('MSVS_VERSION', '6.0'))
    if version_num >= 8.0 and \
            (env.get('WINDOWS_INSERT_MANIFEST', 0) or env.get('WINDOWS_EMBED_MANIFEST', 0)):
        # MSVC 8 and above automatically generate .manifest files that must be installed
        extratargets.append(
            env.ReplaceIxes(dll,
                            '%sPREFIX' % paramtp, '%sSUFFIX' % paramtp,
                            "WINDOWSSHLIBMANIFESTPREFIX", "WINDOWSSHLIBMANIFESTSUFFIX"))

    if 'PDB' in env and env['PDB']:
        pdb = env.arg2nodes('$PDB', target=target, source=source)[0]
        extratargets.append(pdb)
        target[0].attributes.pdb = pdb

    if version_num >= 11.0 and env.get('PCH', 0):
        # MSVC 11 and above need the PCH object file to be added to the link line,
        # otherwise you get link error LNK2011.
        pchobj = SCons.Util.splitext(str(env['PCH']))[0] + '.obj'
        # print "prog_emitter, version %s, appending pchobj %s"%(version_num, pchobj)
        if pchobj not in extrasources:
            extrasources.append(pchobj)

    if not no_import_lib and \
       not env.FindIxes(target, "LIBPREFIX", "LIBSUFFIX"):
        # Append an import library to the list of targets.
        extratargets.append(
            env.ReplaceIxes(dll,
                            '%sPREFIX' % paramtp, '%sSUFFIX' % paramtp,
                            "LIBPREFIX", "LIBSUFFIX"))
        # and .exp file is created if there are exports from a DLL
        extratargets.append(
            env.ReplaceIxes(dll,
                            '%sPREFIX' % paramtp, '%sSUFFIX' % paramtp,
                            "WINDOWSEXPPREFIX", "WINDOWSEXPSUFFIX"))

    return (target+extratargets, source+extrasources)

def windowsLibEmitter(target, source, env):
    return _dllEmitter(target, source, env, 'SHLIB')

def ldmodEmitter(target, source, env):
    """Emitter for loadable modules.

    Loadable modules are identical to shared libraries on Windows, but building
    them is subject to different parameters (LDMODULE*).
    """
    return _dllEmitter(target, source, env, 'LDMODULE')

def prog_emitter(target, source, env):
    SCons.Tool.msvc.validate_vars(env)

    extratargets = []
    extrasources = []

    exe = env.FindIxes(target, "PROGPREFIX", "PROGSUFFIX")
    if not exe:
        raise SCons.Errors.UserError("An executable should have exactly one target with the suffix: %s" % env.subst("$PROGSUFFIX"))

    version_num, suite = SCons.Tool.msvs.msvs_parse_version(env.get('MSVS_VERSION', '6.0'))
    if version_num >= 8.0 and \
            (env.get('WINDOWS_INSERT_MANIFEST', 0) or env.get('WINDOWS_EMBED_MANIFEST', 0)):
        # MSVC 8 and above automatically generate .manifest files that have to be installed
        extratargets.append(
            env.ReplaceIxes(exe,
                            "PROGPREFIX", "PROGSUFFIX",
                            "WINDOWSPROGMANIFESTPREFIX", "WINDOWSPROGMANIFESTSUFFIX"))

    if 'PDB' in env and env['PDB']:
        pdb = env.arg2nodes('$PDB', target=target, source=source)[0]
        extratargets.append(pdb)
        target[0].attributes.pdb = pdb

    if version_num >= 11.0 and env.get('PCH', 0):
        # MSVC 11 and above need the PCH object file to be added to the link line,
        # otherwise you get link error LNK2011.
        pchobj = SCons.Util.splitext(str(env['PCH']))[0] + '.obj'
        # print("prog_emitter, version %s, appending pchobj %s"%(version_num, pchobj))
        if pchobj not in extrasources:
            extrasources.append(pchobj)

    return (target+extratargets,source+extrasources)

def RegServerFunc(target, source, env):
    if 'register' in env and env['register']:
        ret = regServerAction([target[0]], [source[0]], env)
        if ret:
            raise SCons.Errors.UserError("Unable to register %s" % target[0])
        else:
            print("Registered %s sucessfully" % target[0])
        return ret
    return 0

# These are the actual actions run to embed the manifest.
# They are only called from the Check versions below.
embedManifestExeAction = SCons.Action.Action('$MTEXECOM')
embedManifestDllAction = SCons.Action.Action('$MTSHLIBCOM')

def embedManifestDllCheck(target, source, env):
    """Function run by embedManifestDllCheckAction to check for existence of manifest
    and other conditions, and embed the manifest by calling embedManifestDllAction if so."""
    if env.get('WINDOWS_EMBED_MANIFEST', 0):
        manifestSrc = target[0].get_abspath() + '.manifest'
        if os.path.exists(manifestSrc):
            ret = embedManifestDllAction([target[0]], None, env)
            if ret:
                raise SCons.Errors.UserError("Unable to embed manifest into %s" % (target[0]))
            return ret
        else:
            print('(embed: no %s.manifest found; not embedding.)'%str(target[0]))
    return 0

def embedManifestExeCheck(target, source, env):
    """Function run by embedManifestExeCheckAction to check for existence of manifest
    and other conditions, and embed the manifest by calling embedManifestExeAction if so."""
    if env.get('WINDOWS_EMBED_MANIFEST', 0):
        manifestSrc = target[0].get_abspath() + '.manifest'
        if os.path.exists(manifestSrc):
            ret = embedManifestExeAction([target[0]], None, env)
            if ret:
                raise SCons.Errors.UserError("Unable to embed manifest into %s" % (target[0]))
            return ret
        else:
            print('(embed: no %s.manifest found; not embedding.)'%str(target[0]))
    return 0

embedManifestDllCheckAction = SCons.Action.Action(embedManifestDllCheck, None)
embedManifestExeCheckAction = SCons.Action.Action(embedManifestExeCheck, None)

regServerAction = SCons.Action.Action("$REGSVRCOM", "$REGSVRCOMSTR")
regServerCheck = SCons.Action.Action(RegServerFunc, None)
shlibLinkAction = SCons.Action.Action('${TEMPFILE("$SHLINK $SHLINKFLAGS $_SHLINK_TARGETS $_LIBDIRFLAGS $_LIBFLAGS $_PDB $_SHLINK_SOURCES", "$SHLINKCOMSTR")}', '$SHLINKCOMSTR')
compositeShLinkAction = shlibLinkAction + regServerCheck + embedManifestDllCheckAction
ldmodLinkAction = SCons.Action.Action('${TEMPFILE("$LDMODULE $LDMODULEFLAGS $_LDMODULE_TARGETS $_LIBDIRFLAGS $_LIBFLAGS $_PDB $_LDMODULE_SOURCES", "$LDMODULECOMSTR")}', '$LDMODULECOMSTR')
compositeLdmodAction = ldmodLinkAction + regServerCheck + embedManifestDllCheckAction
exeLinkAction = SCons.Action.Action('${TEMPFILE("$LINK $LINKFLAGS /OUT:$TARGET.windows $_LIBDIRFLAGS $_LIBFLAGS $_PDB $SOURCES.windows", "$LINKCOMSTR")}', '$LINKCOMSTR')
compositeLinkAction = exeLinkAction + embedManifestExeCheckAction

def generate(env):
    """Add Builders and construction variables for ar to an Environment."""
    SCons.Tool.createSharedLibBuilder(env, shlib_suffix='$SHLIBSUFFIX')
    SCons.Tool.createProgBuilder(env)

    env['SHLINK']      = '$LINK'
    env['SHLINKFLAGS'] = SCons.Util.CLVar('$LINKFLAGS /dll')
    env['_SHLINK_TARGETS'] = windowsShlinkTargets
    env['_SHLINK_SOURCES'] = windowsShlinkSources
    env['SHLINKCOM']   =  compositeShLinkAction
    env.Append(SHLIBEMITTER = [windowsLibEmitter])
    env.Append(LDMODULEEMITTER = [windowsLibEmitter])
    env['LINK']        = 'link'
    env['LINKFLAGS']   = SCons.Util.CLVar('/nologo')
    env['_PDB'] = pdbGenerator
    env['LINKCOM'] = compositeLinkAction
    env.Append(PROGEMITTER = [prog_emitter])
    env['LIBDIRPREFIX']='/LIBPATH:'
    env['LIBDIRSUFFIX']=''
    env['LIBLINKPREFIX']=''
    env['LIBLINKSUFFIX']='$LIBSUFFIX'

    env['WIN32DEFPREFIX']        = ''
    env['WIN32DEFSUFFIX']        = '.def'
    env['WIN32_INSERT_DEF']      = 0
    env['WINDOWSDEFPREFIX']      = '${WIN32DEFPREFIX}'
    env['WINDOWSDEFSUFFIX']      = '${WIN32DEFSUFFIX}'
    env['WINDOWS_INSERT_DEF']    = '${WIN32_INSERT_DEF}'

    env['WIN32EXPPREFIX']        = ''
    env['WIN32EXPSUFFIX']        = '.exp'
    env['WINDOWSEXPPREFIX']      = '${WIN32EXPPREFIX}'
    env['WINDOWSEXPSUFFIX']      = '${WIN32EXPSUFFIX}'

    env['WINDOWSSHLIBMANIFESTPREFIX'] = ''
    env['WINDOWSSHLIBMANIFESTSUFFIX'] = '${SHLIBSUFFIX}.manifest'
    env['WINDOWSPROGMANIFESTPREFIX']  = ''
    env['WINDOWSPROGMANIFESTSUFFIX']  = '${PROGSUFFIX}.manifest'

    env['REGSVRACTION'] = regServerCheck
    env['REGSVR'] = os.path.join(SCons.Platform.win32.get_system_root(),'System32','regsvr32')
    env['REGSVRFLAGS'] = '/s '
    env['REGSVRCOM'] = '$REGSVR $REGSVRFLAGS ${TARGET.windows}'

    env['WINDOWS_EMBED_MANIFEST'] = 0
    env['MT'] = 'mt'
    #env['MTFLAGS'] = ['-hashupdate']
    env['MTFLAGS'] = SCons.Util.CLVar('/nologo')
    # Note: use - here to prevent build failure if no manifest produced.
    # This seems much simpler than a fancy system using a function action to see
    # if the manifest actually exists before trying to run mt with it.
    env['MTEXECOM']   = '-$MT $MTFLAGS -manifest ${TARGET}.manifest $_MANIFEST_SOURCES -outputresource:$TARGET;1'
    env['MTSHLIBCOM'] = '-$MT $MTFLAGS -manifest ${TARGET}.manifest $_MANIFEST_SOURCES -outputresource:$TARGET;2'
    # TODO Future work garyo 27-Feb-11
    env['_MANIFEST_SOURCES'] = None # _windowsManifestSources

    # Set-up ms tools paths
    msvc_setup_env_once(env)


    # Loadable modules are on Windows the same as shared libraries, but they
    # are subject to different build parameters (LDMODULE* variables).
    # Therefore LDMODULE* variables correspond as much as possible to
    # SHLINK*/SHLIB* ones.
    SCons.Tool.createLoadableModuleBuilder(env, loadable_module_suffix='$LDMODULESUFFIX')
    env['LDMODULE'] = '$SHLINK'
    env['LDMODULEPREFIX'] = '$SHLIBPREFIX'
    env['LDMODULESUFFIX'] = '$SHLIBSUFFIX'
    env['LDMODULEFLAGS'] = '$SHLINKFLAGS'
    env['_LDMODULE_TARGETS'] = _windowsLdmodTargets
    env['_LDMODULE_SOURCES'] = _windowsLdmodSources
    env['LDMODULEEMITTER'] = [ldmodEmitter]
    env['LDMODULECOM'] = compositeLdmodAction

    # Issue #3350
    # Change tempfile argument joining character from a space to a newline
    # mslink will fail if any single line is too long, but is fine with many lines
    # in a tempfile
    env['TEMPFILEARGJOIN'] = os.linesep

def exists(env):
    return msvc_exists(env)

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