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* guile: update documentation, message module
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@ -196,14 +196,14 @@ currently, there are three available:
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@itemize
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@item @code{mu} - initialization, functions to get messages, contacts
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@item @code{mu message} - functions to deal with a single message
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@item @code{mu contact} - functions to deal with a single contact
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@item @code{mu message} - functions to deal with messages
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@item @code{mu contact} - functions to deal with contacts
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@end itemize
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Let's simply load all of them:
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@verbatim
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scheme@(guile-user)> (use-modules (mu) (mu message) (mu contact))
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scheme@(guile-user)> (use-modules (mu) (mu message) (mu contact))
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@end verbatim
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Assuming you have installed everything correctly, the first time you do this,
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@ -217,16 +217,19 @@ non-default places to keep there @t{mu} data files.
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We can initialize the system with:
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@verbatim
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scheme@(guile-user)> (mu:initialize)
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scheme@(guile-user)> (mu:initialize)
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@end verbatim
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Which will use the default location of @file{~/.mu}. Or, instead, if you keep
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your @t{mu} data in a non-standard place:
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@verbatim
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scheme@(guile-user)> (mu:initialize "/path/to/my/mu/")
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scheme@(guile-user)> (mu:initialize #t "/path/to/my/mu/")
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@end verbatim
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Note, the second parameter, @t{#t} is for future use; simply set it to @t{#t}
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for now.
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If all worked up until here, we're ready to go with @t{mu-guile}.
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@node Messages
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@ -246,8 +249,8 @@ Now we are ready to retrieve some messages from the system. There are two
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principle functions to do this:
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@itemize
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@item @code{(mu:message-list [<search-expression>])}
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@item @code{(mu:for-each-message <function> [<search-expression>])}
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@item @code{(mu:message-list [<search-expression>])}
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@item @code{(mu:for-each-message <function> [<search-expression>])}
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@end itemize
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The first function, @code{mu:message-list} returns a list of all messages
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@ -321,24 +324,24 @@ for all of these functions here - for the details about various flags /
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properties, please refer to the @t{mu-find} man-page.
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@itemize
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@item @code{bcc}: the @t{Bcc} field of the message, or @t{#f} if there is none
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@item @code{bcc}: the @t{Bcc} field of the message, or @t{#f} if there is none
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@item @code{body-html}: : the html body of the message, or @t{#f} if there is none
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@item @code{body-txt}: the plain-text body of the message, or @t{#f} if there is none
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@item @code{cc}: the @t{Bcc} field of the message, or @t{#f} if there is none
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@item @code{date}: the @t{Date} field of the message, or 0 if there is none
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@item @code{flags}: list of message-flags for this message
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@item @code{body-txt}: the plain-text body of the message, or @t{#f} if there is none
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@item @code{cc}: the @t{Bcc} field of the message, or @t{#f} if there is none
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@item @code{date}: the @t{Date} field of the message, or 0 if there is none
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@item @code{flags}: list of message-flags for this message
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@item @code{from}: the @t{From} field of the message, or @t{#f} if there is none
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@item @code{maildir}: the maildir this message lives in, or @t{#f} if there is none
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@item @code{maildir}: the maildir this message lives in, or @t{#f} if there is none
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@item @code{message-id}: the @t{Message-Id} field of the message, or @t{#f} if there is none
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@item @code{path}: the file system path for this message
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@item @code{path}: the file system path for this message
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@item @code{priority}: the priority of this message (either @t{mu:low}, @t{mu:normal}
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or @t{mu:high}
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@item @code{references}: the list of messages (message-ids) this message
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refers to in the @t{References:} header
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@item @code{size}: size of the message in bytes
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@item @code{subject}: the @t{Subject} field of the message, or @t{#f} if there is none.
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@item @code{tags}: list of tags for this message
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@item @code{to}: the sender of the message, or @t{#f} if there is none.
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@item @code{size}: size of the message in bytes
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@item @code{subject}: the @t{Subject} field of the message, or @t{#f} if there is none.
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@item @code{tags}: list of tags for this message
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@item @code{to}: the sender of the message, or @t{#f} if there is none.
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@end itemize
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With these functions, we can query messages for their properties; for example:
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@ -357,12 +360,31 @@ There are a couple more functions:
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@itemize
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@item @code{(header <mu-message> "<header-name>")} returns an arbitrary message
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header (or @t{#f} if not found) -- e.g. @code{(header msg "User-Agent")}
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@item @code{(contacts <mu-message> contact-type)} which returns a list
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@item @code{(contacts <mu-message> contact-type)} which returns a list
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of contacts (names/e-mail addresses in the To/From/Cc/Bcc-fields).
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@xref{Contacts}.
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@end itemize
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Now, let's write a little example -- let's find out what is the @emph{longest
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subject} of any of your e-mail messages; you can put in a separate file, make
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it executable, and run it like any program.
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@verbatim
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#!/bin/sh
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exec guile -e main -s $0 $@
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!#
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(use-modules (mu) (mu message))
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(let* ((longest-subj ""))
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(mu:initialize)
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(mu:for-each-message
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(lambda(msg)
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(let ((subj (subject msg)))
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(if (and subj (> (string-length subj) (string-length longest-subj)))
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(set! longest-subj subj))))
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query)
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(format #t "Longest subject: ~a" longest-subj))
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@end verbatim
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@node Contacts
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@chapter Contacts
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@ -372,6 +394,4 @@ of contacts (names/e-mail addresses in the To/From/Cc/Bcc-fields).
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@appendix GNU Free Documentation License
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@include fdl.texi
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@bye
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@ -22,6 +22,7 @@
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<mu-message>
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mu:for-each-message
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mu:for-each-contact
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mu:message-list
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;; internal
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mu:for-each-msg-internal
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mu:get-contacts
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@ -102,35 +103,3 @@ EXPR. If EXPR is not provided, return a list of /all/ messages in the store."
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(lambda (m)
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(set! lst (append! lst (list m)))) expr)
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lst))
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(define* (mu:tabulate-messages func #:optional (expr #t))
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"Execute FUNC for each message matching EXPR, and return an alist
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with maps each result of FUNC to its frequency. FUNC is a function
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takes a <mu-message> instance as its argument. For example, to
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tabulate messages by weekday, one could use:
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(mu:tabulate-messages (lambda(msg) (tm:wday (localtime (date msg)))))."
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(let ((table '()))
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(mu:for-each-message
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(lambda(msg)
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(let* ((val (func msg))
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(old-freq (or (assoc-ref table val) 0)))
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(set! table (assoc-set! table val (1+ old-freq)))))
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expr)
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table))
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(define* (mu:average-messages func #:optional (expr #t))
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"Execute FUNC for each message matching EXPR, and return the average
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value of the results of FUNC. FUNC is a function that takes a
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<mu-message> instance as its argument, and returns some number. For
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example, to get the average message size of messages related to
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icecream: (mu:average (lambda(msg) (size msg)) \"icecream\" ."
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(let ((count 0) (sum 0))
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(mu:for-each-message
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(lambda (msg)
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(set! count (+1 count))
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(set! sum (+ sum (func msg))))
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expr)
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(if (= count 0)
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0
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(exact->inexact (/ sum count)))))
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