handle missing date column in list_adls_files

NEWS.md

@@ -2,6 +2,7 @@
 
 - Fix blob lease code that has been broken since launch (#77, #78).
 - Set the default starting time for a generated SAS to the recommended 15 minutes before the current time, to allow for clock skew.
+- Fix `list_adls_files` to allow for a missing last-modified-date column (#82).
 
 # AzureStor 3.4.0
 

R/adls_client_funcs.R

@@ -330,6 +330,8 @@ list_adls_files <- function(filesystem, dir="/", info=c("all", "name"),
         if(is.null(dfchunk$permissions))
             dfchunk$permissions <- ""
         else dfchunk$permissions[is.na(dfchunk$permissions)] <- ""
+        if(is.null(dfchunk$lastModified))
+            dfchunk$lastModified <- ""
 
         dfchunk <- dfchunk[c("name", "contentLength", "isDirectory", "lastModified", "permissions", "etag")]
         if(!is.null(dfchunk$contentLength))