Android OTA升级之升级包生成脚本ota_from_target_files

script            =            edify_generator.EdifyGenerator(           3           , OPTIONS.info_dict)

metadata            =            {          


                      "post-build"           : CalculateFingerprint(oem_props, oem_dict,            


                      OPTIONS.info_dict),          


                      "pre-device"           : GetOemProperty(           "ro.product.device"           , oem_props, oem_dict,          


                      OPTIONS.info_dict),          


                      "post-timestamp"           : GetBuildProp(           "ro.build.date.utc"           , OPTIONS.info_dict),          


           }

AppendAssertions(script, input_zip)

device_specific.FullOTA_Assertions()

script.ShowProgress(           0.5           ,            0           ) 

def            ShowProgress(           self           , frac, dur):          


                      """Update the progress bar, advancing it over 'frac' over the next          


                      'dur' seconds. 'dur' may be zero to advance it via SetProgress          


                      commands instead of by time."""          


                      self           .script.append(           "show_progress(%f, %d);"            %            (frac,            int           (dur)))

if            OPTIONS.wipe_user_data:          


                      script.FormatPartition(           "userdata"           )