diff options
| -rw-r--r-- | guix/import/utils.scm | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/guix/import/utils.scm b/guix/import/utils.scm index 2a3b7341fb..ed6c3ce6af 100644 --- a/guix/import/utils.scm +++ b/guix/import/utils.scm @@ -47,6 +47,7 @@ flatten assoc-ref* + hash-ref* url-fetch guix-hash-url @@ -116,6 +117,15 @@ recursively apply the procedure to the sub-list." (assoc-ref alist key) (apply assoc-ref* (assoc-ref alist key) rest))) +(define (hash-ref* hash-table key . rest) + "Return the value for KEY from HASH-TABLE. For each additional key specified, +recursively apply the procedure to the sub-hash-table." + (if (hash-table? hash-table) + (if (null? rest) + (hash-ref hash-table key) + (apply hash-ref* (hash-ref hash-table key) rest)) + #f)) ; For consistency with assoc-ref* + (define (url-fetch url file-name) "Save the contents of URL to FILE-NAME. Return #f on failure." (parameterize ((current-output-port (current-error-port))) |