# functions to support bundled libraries

from Configure import conf
from samba_utils import *

def BUNDLED_NAME(bld, name, bundled_extension):
    '''possibly rename a library to include a bundled extension'''
    if bld.env.DISABLE_SHARED or not bundled_extension:
        return name
    if name in bld.env.BUNDLED_EXTENSION_EXCEPTION:
        return name
    extension = getattr(bld.env, 'BUNDLED_EXTENSION', '')
    if extension:
        return name + '-' + extension
    return name


def BUILTIN_LIBRARY(bld, name):
    '''return True if a library should be builtin
       instead of being built as a shared lib'''
    if bld.env.DISABLE_SHARED:
        return True
    if name in bld.env.BUILTIN_LIBRARIES:
        return True
    return False


def BUILTIN_DEFAULT(opt, builtins):
    '''set a comma separated default list of builtin libraries for this package'''
    if 'BUILTIN_LIBRARIES_DEFAULT' in Options.options:
        return
    Options.options['BUILTIN_LIBRARIES_DEFAULT'] = builtins
Options.Handler.BUILTIN_DEFAULT = BUILTIN_DEFAULT


def BUNDLED_EXTENSION_DEFAULT(opt, extension, noextenion=''):
    '''set a default bundled library extension'''
    if 'BUNDLED_EXTENSION_DEFAULT' in Options.options:
        return
    Options.options['BUNDLED_EXTENSION_DEFAULT'] = extension
    Options.options['BUNDLED_EXTENSION_EXCEPTION'] = noextenion
Options.Handler.BUNDLED_EXTENSION_DEFAULT = BUNDLED_EXTENSION_DEFAULT


@runonce
@conf
def CHECK_BUNDLED_SYSTEM(conf, libname, minversion='0.0.0',
                         checkfunctions=None, headers=None):
    if 'ALL' in conf.env.BUNDLED_LIBS or libname in conf.env.BUNDLED_LIBS:
        return False
    found = 'FOUND_SYSTEMLIB_%s' % libname
    if found in conf.env:
        return conf.env[found]
    # try pkgconfig first
    if conf.check_cfg(package=libname,
                      args='"%s >= %s" --cflags --libs' % (libname, minversion),
                      msg='Checking for system %s >= %s' % (libname, minversion)):
        conf.SET_TARGET_TYPE(libname, 'SYSLIB')
        conf.env[found] = True
        return True
    if checkfunctions is not None:
        if conf.CHECK_FUNCS_IN(checkfunctions, libname, headers=headers, empty_decl=False):
            conf.env[found] = True
            return True
    conf.env[found] = False
    if 'NONE' in conf.env.BUNDLED_LIBS or '!'+libname in conf.env.BUNDLED_LIBS:
        print('ERROR: System library %s of version %s not found, and bundling disabled' % (libname, minversion))
        sys.exit(1)
    return False