From 56bd7782cd5ce62baad0d15d7eaa2333e1ca56e0 Mon Sep 17 00:00:00 2001
From: Oscar Najera <hi@oscarnajera.com>
Date: Sun, 23 Apr 2023 18:47:08 +0200
Subject: Loop lines on read-habit

---
 lib/guile/read-habit.scm | 37 +++++++++++++++++++++----------------
 1 file changed, 21 insertions(+), 16 deletions(-)

(limited to 'lib/guile')

diff --git a/lib/guile/read-habit.scm b/lib/guile/read-habit.scm
index 7ba7002..b3c7888 100755
--- a/lib/guile/read-habit.scm
+++ b/lib/guile/read-habit.scm
@@ -18,21 +18,25 @@
 
 (define habits-dir (expand-file "~/org/habits/"))
 
-(define (parse-file port)
-  (let loop ((values '())
-             (line (read-line port)))
-    (if (eof-object? line)
-        (reverse values)
-        (loop (cons (map string->number (string-split line #\:)) values)
-              (read-line port)))))
+(define (iter-lines filename proc)
+  (call-with-input-file filename
+    (lambda (port)
+      (let loop ((values '())
+                 (line (read-line port)))
+        (if (eof-object? line)
+            (reverse values)
+            (loop (cons (proc line) values)
+                  (read-line port)))))))
 
 (define (cli-print file-name)
-  (map (lambda (row)
-         (format #t "~a -> ~d~%"
-                 (colorize-string (strftime "%c" (localtime (car row))) 'CYAN 'BOLD)
-                 (cadr row)))
-       (call-with-input-file (string-append habits-dir file-name)
-         parse-file)))
+  (iter-lines
+   (string-append habits-dir file-name)
+   (lambda (line)
+     (let ((row (map string->number (string-split line #\:))))
+       (format #t "~a -> ~d~%"
+               (colorize-string (strftime "%c" (localtime (car row))) 'CYAN 'BOLD)
+               (cadr row))
+       row))))
 
 (define (request-path-components request)
   (split-and-decode-uri-path (uri-path (request-uri request))))
@@ -53,9 +57,10 @@
           ((file-exists? (string-append habits-dir (car path)))
            (values '((content-type . (application/json)))
                    (scm->json-string (list->vector
-                                      (map (lambda (row) (list->vector row))
-                                           (call-with-input-file (string-append habits-dir (car path))
-                                             parse-file))))))
+                                      (iter-lines
+                                       (string-append habits-dir (car path))
+                                       (lambda (line)
+                                         (list->vector (map string->number (string-split line #\:)))))))))
           ((string=? "hi" (car path))
            (values '((content-type . (application/json)))
                    '(hi)))
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