guile: update scripts

Some minor improvements to the existing scripts

guile/mu/plot.scm

@@ -1,5 +1,5 @@
 ;;
-;; Copyright (C) 2011-2013 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
+;; Copyright (C) 2011-2022 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
 ;;
 ;; This program is free software; you can redistribute it and/or modify it
 ;; under the terms of the GNU General Public License as published by the
@@ -26,12 +26,12 @@
 (define (export-pairs pairs)
   "Write a temporary file with the list of PAIRS in table format, and
 return the file name."
-  (let* ((datafile (tmpnam))
-	  (output (open datafile (logior O_CREAT O_WRONLY) #O0600)))
+  (let* ((output (mkstemp "/tmp/mu-guile-XXXXXX" "w"))
+	 (datafile (port-filename output)))
     (for-each
-      (lambda(pair)
-	(display (format #f "~a ~a\n" (car pair) (cdr pair)) output))
-      pairs)
+     (lambda(pair)
+       (display (format #f "~a ~a\n" (car pair) (cdr pair)) output))
+     pairs)
     (close output)
     datafile))
 
@@ -62,18 +62,21 @@ EXTRA-GNUPLOT-OPTS is a list
 of any additional options for gnuplot."
   (if (not (find-program-in-path "gnuplot"))
     (error "cannot find 'gnuplot' in path"))
-  (let ((datafile (export-pairs data))
-	 (gnuplot (open-pipe "gnuplot -p" OPEN_WRITE)))
-    (display (string-append
-	       "reset\n"
-	       "set term " (or output "dumb") "\n"
-	       "set title \"" title "\"\n"
-	       "set xlabel \"" x-label "\"\n"
-	       "set ylabel \"" y-label "\"\n"
-	       "set boxwidth 0.9\n"
-	       (string-join extra-gnuplot-opts "\n")
-	       "plot \"" datafile "\" using 2:xticlabels(1) with boxes fs solid\n")
-      gnuplot)
+  (when (zero? (length data))
+    (error "No data for plotting"))
+  (let* ((datafile (export-pairs data))
+	 (gnuplot (open-pipe "gnuplot -p" OPEN_WRITE))
+	 (recipe
+	   (string-append
+	    "reset\n"
+	    "set term " (or output "dumb") "\n"
+	    "set title \"" title "\"\n"
+	    "set xlabel \"" x-label "\"\n"
+	    "set ylabel \"" y-label "\"\n"
+	    "set boxwidth 0.9\n"
+	    (string-join extra-gnuplot-opts "\n")
+	    "plot \"" datafile "\" using 2:xticlabels(1) with boxes fs solid title \"\"\n")))
+    (display recipe gnuplot)
     (close-pipe gnuplot)))
 
 ;; backward compatibility

guile/mu/script.scm

@@ -38,16 +38,17 @@ arguments). Possible arguments are:
   searchexpr (a search query)
 then call FUNC with args SEARCHEXPR and OUTPUT."
   (setlocale LC_ALL  "")
-  (let* ((optionspec   '((muhome  (value #t))
-			  (query   (value #t))
-			  (output  (value #f))
-			  (help    (single-char #\h) (value #f))))
-	  (options (getopt-long args optionspec))
-	  (query (option-ref options 'query #f))
-	  (help (option-ref options 'help #f))
-	  (output (option-ref options 'output #f))
-	  (muhome (option-ref options 'muhome #f))
-	  (restargs (option-ref options '() #f)))
+  (let* ((optionspec '((muhome  (value #t))
+		       (query   (value #t))
+		       (output  (value #f))
+		       (time-unit (value #t)) ;; Ignore.
+		       (help    (single-char #\h) (value #f))))
+	 (options (getopt-long args optionspec))
+	 (query (option-ref options 'query #f))
+	 (help (option-ref options 'help #f))
+	 (output (option-ref options 'output #f))
+	 (muhome (option-ref options 'muhome #f))
+	 (restargs (option-ref options '() #f)))
     (if help (help-and-exit))
     (mu:initialize muhome)
     (func (or query "") output)))

guile/mu/stats.scm

@@ -1,5 +1,5 @@
 ;;
-;; Copyright (C) 2011-2013 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
+;; Copyright (C) 2011-2022 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
 ;;
 ;; This program is free software; you can redistribute it and/or modify it
 ;; under the terms of the GNU General Public License as published by the
@@ -47,7 +47,7 @@ get back a list like
 	 ;; func to add a value to our table
 	 (update-table
 	   (lambda (val)
-	     (let ((old-freq (or (assoc-ref table val) 0))) 
+	     (let ((old-freq (or (assoc-ref table val) 0)))
 	       (set! table (assoc-set! table val (1+ old-freq)))))))
     (mu:for-each-message
       (lambda(msg)
@@ -65,9 +65,10 @@ returns #t if A < B, #f otherwise), and then take the first N."
   (take (sort (mu:tabulate func expr) less) n))
 
 (define* (mu:top-n-most-frequent func n #:optional (expr #t))
-  "Take the results of (mu:tabulate FUNC EXPR), and return the N items with the highest frequency."
+  "Take the results of (mu:tabulate FUNC EXPR), and return the N items
+with the highest frequency."
   (top-n func (lambda (a b) (> (cdr a) (cdr b))) n expr))
- 
+
 (define* (mu:count #:optional (expr #t))
   "Count the number of messages matching EXPR. If EXPR is not
 provided, match /all/ messages."
@@ -100,7 +101,8 @@ EXPR (or #t for all). Returns #f if undefined."
 
 (define* (mu:stddev func #:optional (expr #t))
   "Get the standard deviation the the values of FUNC applied to all
-messages matching EXPR (or #t for all). This is the 'population' stddev, not the 'sample' stddev. Returns #f if undefined."
+messages matching EXPR (or #t for all). This is the 'population' stddev,
+not the 'sample' stddev. Returns #f if undefined."
   (stddev (map func (mu:message-list expr))))
 
 (define* (mu:max func #:optional (expr #t))

guile/scripts/find-dups.scm

@@ -19,7 +19,7 @@ exec guile -e main -s $0 $@
 ;; along with this program; if not, write to the Free Software Foundation,
 ;; Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 
-;; INFO: find duplicate messages
+;; INFO: Find duplicate messages
 ;; INFO: options:
 ;; INFO:   --muhome=<muhome>: path to mu home dir
 ;; INFO:   --delete: delete all but the first one (experimental, be careful!)

guile/scripts/msgs-count.scm

@@ -1,8 +1,7 @@
 #!/bin/sh
 exec guile -e main -s $0 $@
 !#
-;;
-;; Copyright (C) 2013 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
+;; Copyright (C) 2022 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
 ;;
 ;; This program is free software; you can redistribute it and/or modify it
 ;; under the terms of the GNU General Public License as published by the
@@ -19,10 +18,11 @@ exec guile -e main -s $0 $@
 ;; along with this program; if not, write to the Free Software Foundation,
 ;; Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 
-;; INFO: graph the number of messages per day (using gnuplot)
+
+;; INFO: Count the number of messages matching some query
 ;; INFO: options:
 ;; INFO:   --query=<query>:   limit to messages matching query
-;; INFO:   --muhome=<muhome>: path to mu home dir
+;; INFO:   --muhome=<muhome>: path to mu home dir (optional)
 
 (use-modules (mu) (mu script) (mu stats))