ó mÜJ]c@`s½dZddlmZmZmZmZddlZejeƒZ ddl m Z ddl Z ddl mZmZddlmZddlmZdZd „Zd „Zdd„ZdS(u& Utilities for checking dependencies i(tabsolute_importtdivisiontprint_functiontunicode_literalsN(t import_module(tPopentPIPE(tVersioni(tsettingsuimport_optionaluimport_requiredudetect_phantomjscC`sRyt|ƒSWn=tk r!n-tk rMdj|ƒ}tj|ƒnXdS(u Attempt to import an optional dependency. Silently returns None if the requested module is not available. Args: mod_name (str) : name of the optional module to try to import Returns: imported module or None, if import fails u%Failed to import optional module `{}`N(Rt ImportErrort Exceptiontformattlogt exception(tmod_nametmsg((s6lib/python2.7/site-packages/bokeh/util/dependencies.pytimport_optional2s   cC`s2yt|ƒSWntk r-t|ƒ‚nXdS(uY Attempt to import a required dependency. Raises a RuntimeError if the requested module is not available. Args: mod_name (str) : name of the required module to try to import error_msg (str) : error message to raise when the module is missing Returns: imported module Raises: RuntimeError N(RR t RuntimeError(Rt error_msg((s6lib/python2.7/site-packages/bokeh/util/dependencies.pytimport_requiredFs u2.1cC`s*tjƒd k r!tjƒ}n-ttdƒrHtjdƒpBd}nd}y¸t|dgdtdtƒ}|jƒ|j ƒ}t |dƒdkr»t d|dj d ƒƒ‚nt |ƒ}t |dj d ƒƒ}||krt d ||fƒ‚nWntk r%t d ƒ‚nX|S( uç Detect if PhantomJS is avaiable in PATH, at a minimum version. Args: version (str, optional) : Required minimum version for PhantomJS (mostly for testing) Returns: str, path to PhantomJS uwhichu phantomjsu --versiontstdouttstderriiu,Error encountered in PhantomJS detection: %ruutf8u=PhantomJS version to old. Version>=%s required, installed: %suŠPhantomJS is not present in PATH or BOKEH_PHANTOMJS_PATH. Try "conda install phantomjs" or "npm install -g phantomjs-prebuilt"N(Rtphantomjs_pathtNonethasattrtshutiltwhichRRtwaitt communicatetlenRtdecodetVtOSError(tversionRtproctouttrequiredt installed((s6lib/python2.7/site-packages/bokeh/util/dependencies.pytdetect_phantomjs[s&        (uimport_optionaluimport_requiredudetect_phantomjs(t__doc__t __future__RRRRtloggingt getLoggert__name__R t importlibRRt subprocessRRtpackaging.versionRRRt__all__RRR&(((s6lib/python2.7/site-packages/bokeh/util/dependencies.pyt s"