With-files-write macro #6
83
main.lisp
83
main.lisp
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@ -30,27 +30,33 @@
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If the JSON is 'error JSON', I.E., it signals that an error has been
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recieved, two values are returned: NIL and the string-error-message."
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(let ((result
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(drakma:http-request
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(make-call-url *api-host* *api-root* call arguments)
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(multiple-value-list
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(drakma:http-request
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(make-call-url call arguments)
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:method method
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:url-encoder #'ipfs::url-encode
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:parameters parameters
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:want-stream want-stream)))
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:want-stream want-stream))))
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(if want-stream
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(car result)
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(apply #'process-result result))))
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(cond (want-stream result)
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((stringp result) (values nil result))
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((vectorp result)
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(let* ((string (flexi-streams:octets-to-string result))
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(alist
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(with-input-from-string (stream string)
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(loop while (peek-char t stream nil)
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collect (yason:parse stream :object-as :alist)))))
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(if (ignore-errors (equal (cdr (s-assoc "Type" (simplify alist))) "error"))
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(values NIL (cdr (s-assoc "Message" (simplify alist))))
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(simplify alist)))))))
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(defun process-result (body status-code headers uri http-stream must-close status-text)
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(declare (ignore uri http-stream must-close status-text))
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(let* ((result (cond ((stringp body) body)
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((vectorp body) (flexi-streams:octets-to-string body))))
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(result (if (search "application/json" (cdr (assoc :content-type headers)))
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(unless (empty-string-p result)
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(simplify (yason:parse result :object-as :alist)))
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result)))
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(if (eql 200 status-code)
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result
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(values nil (if (stringp result)
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result
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(ignore-errors (cdr (s-assoc "Message" result))))))))
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;; STRING STRING LIST → STRING
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(defun make-call-url (host root call arguments)
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;; STRING LIST &key STRING STRING → STRING
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(defun make-call-url (call arguments &key (host *api-host*) (root *api-root*))
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"Create the URL of an API call, as per the given arguments.
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Symbols are assumed to be something like 'T (so boolean), nil likewise.
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Arguments should look like this:
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@ -497,22 +503,40 @@
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;; PATHNAME STRING [:NUMBER :BOOLEAN :BOOLEAN :BOOLEAN :NUMBER :BOOLEAN
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;; :NUMBER :STRING]
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;; → NIL || (NIL STRING)
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(defun files-write (pathname dest-path
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(defun files-write (path-or-string dest-path
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&key (offset nil) (create nil) (parents nil)
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(truncate nil) (count nil) (raw-leaves nil)
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(cid-version nil) (hash nil))
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"Write to a given file.
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"Write to a given file. First parameter can be a string or a path to
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a local file.
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/ipns/docs.ipfs.io/reference/api/http/#api-v0-files-rm"
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(ipfs-call "files/write"
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`(("arg" ,dest-path) ("create" ,create) ("parents" ,parents)
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("truncate" ,truncate) ("raw-leaves" ,raw-leaves)
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,(if offset (list "offset" offset))
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,(if count (list "count" count))
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,(if cid-version `("cid-version" ,cid-version))
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,(if hash (list "hash" hash)))
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:parameters `(("file" . ,pathname))))
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(let ((result
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(multiple-value-list
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(drakma:http-request
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(make-call-url
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"files/write"
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`(("arg" ,dest-path) ("create", create) ("parents" ,parents)
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("truncate" ,truncate) ("raw-leaves" ,raw-leaves)
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,@(when offset (list "offset" offset))
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,@(when count (list "count" count))
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,@(when cid-version `("cid-version" ,cid-version))
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,@(when hash (list "hash" hash))))
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:method :post
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:parameters `(("data" . ,path-or-string))
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:form-data t))))
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(apply #'process-result result)))
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(defmacro with-files-write ((stream dest-path &rest params) &body body)
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"A convenience macro for files-write. In the body of the macro, any writes
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to the stream named by STREAM will be sent to the mfs file at DEST-PATH. PARAMS
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will be passed directly to the files-write function."
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(let ((fn (gensym "FN")))
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;;FIXME: Would be nice to write the stream directly to files-write.
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;; This feels a little less efficient.
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`(uiop:with-temporary-file (:stream ,stream :pathname ,fn)
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,@body
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:close-stream
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(files-write ,fn ,dest-path ,@params))))
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;; —————————————————————————————————————
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;; FILESTORE CALLS
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@ -770,7 +794,8 @@
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(defun pin-ls (&key (path nil) (type "all"))
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"List objects pinned to local storage.
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/ipns/docs.ipfs.io/reference/api/http/#api-v0-pin-ls"
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(ipfs-call "pin/ls" `(,(when path `("arg" ,path)) ("type" ,type))))
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(let ((res (ipfs-call "pin/ls" `(,(when path `("arg" ,path)) ("type" ,type)))))
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(if (equal res '("Keys")) nil res)))
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;; STRING [:BOOLEAN] → ALIAS || (NIL STRING)
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(defun pin-rm (path &key (recursive 'T))
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@ -1046,7 +1071,7 @@
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(stringp (cdr list)))
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(cdr list))
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((and (eq 1 (length list))
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(consp list))
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(consp (car list)))
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(simplify (car list)))
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((and (consp list)
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(stringp (car list))
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@ -168,4 +168,5 @@
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;; version calls
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:version
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:version-deps))
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:version-deps
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#:with-files-write))
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