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emacs: Support passing input via `notmuch-call-notmuch-*'

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This adds support for passing a string to write to notmuch's stdin to
`notmuch-call-notmuch-process' and `notmuch-call-notmuch-sexp'.  Since
this makes both interfaces a little more complicated, it also unifies
their documentation better.
This commit is contained in:
Austin Clements 2013-10-24 11:19:06 -04:00 committed by David Bremner
parent ddc44ae0d0
commit 662e097984
1 changed files with 33 additions and 6 deletions
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39
emacs/notmuch-lib.el
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@ -628,28 +628,55 @@ You may need to restart Emacs or upgrade your notmuch package."))
;; `notmuch-logged-error' does not return.
))))
(defun notmuch-call-notmuch--helper (destination args)
"Helper for synchronous notmuch invocation commands.
This wraps `call-process'. DESTINATION has the same meaning as
for `call-process'. ARGS is as described for
`notmuch-call-notmuch-process'."
(let (stdin-string)
(while (keywordp (car args))
(case (car args)
(:stdin-string (setq stdin-string (cadr args)
args (cddr args)))
(otherwise
(error "Unknown keyword argument: %s" (car args)))))
(if (null stdin-string)
(apply #'call-process notmuch-command nil destination nil args)
(insert stdin-string)
(apply #'call-process-region (point-min) (point-max)
notmuch-command t destination nil args))))
(defun notmuch-call-notmuch-process (&rest args)
"Synchronously invoke \"notmuch\" with the given list of arguments.
"Synchronously invoke `notmuch-command' with ARGS.
The caller may provide keyword arguments before ARGS. Currently
supported keyword arguments are:
:stdin-string STRING - Write STRING to stdin
If notmuch exits with a non-zero status, output from the process
will appear in a buffer named \"*Notmuch errors*\" and an error
will be signaled."
(with-temp-buffer
(let ((status (apply #'call-process notmuch-command nil t nil args)))
(let ((status (notmuch-call-notmuch--helper t args)))
(notmuch-check-exit-status status (cons notmuch-command args)
(buffer-string)))))
(defun notmuch-call-notmuch-sexp (&rest args)
"Invoke `notmuch-command' with ARGS and return the parsed S-exp output.
If notmuch exits with a non-zero status, this will pop up a
buffer containing notmuch's output and signal an error."
This is equivalent to `notmuch-call-notmuch-process', but parses
notmuch's output as an S-expression and returns the parsed value.
Like `notmuch-call-notmuch-process', if notmuch exits with a
non-zero status, this will report its output and signal an
error."
(with-temp-buffer
(let ((err-file (make-temp-file "nmerr")))
(unwind-protect
(let ((status (apply #'call-process
notmuch-command nil (list t err-file) nil args)))
(let ((status (notmuch-call-notmuch--helper (list t err-file) args)))
(notmuch-check-exit-status status (cons notmuch-command args)
(buffer-string) err-file)
(goto-char (point-min))