Rename and use temporaries

svn: r6310

collects/web-server/prototype-web-server/lang.ss

@@ -1,7 +1,7 @@
 (module lang mzscheme
   (require-for-syntax (lib "etc.ss")
                       (lib "list.ss")
-                      "labels.ss"
+                      "lang/labels.ss"
                       "lang/util.ss"
                       "lang/elim-letrec.ss"
                       "lang/anormal.ss"

collects/web-server/prototype-web-server/lang/labels.ss

@@ -1,5 +1,6 @@
 (module labels mzscheme
   (require (lib "md5.ss")
+           (lib "list.ss")
            (lib "etc.ss"))
   (provide make-labeling
            delete-tag-list!)
@@ -24,22 +25,24 @@
                (integer->char (add1 (char->integer (string-ref str 0))))
                (substring str 1))]))
     
-  (define tag-file-path (this-expression-source-directory))
+  (define default-file-name (build-path (this-expression-source-directory) ".tag-list"))
-  (define default-file-name ".tag-list")
   (define file-system-mutex (make-semaphore 1))
   
   ;; read-tag-list: string -> (listof (list bytes string))
   ;; read the tag list from the file system
   (define (read-tag-list filename)
-    (if (file-exists? (build-path tag-file-path filename))
+    (if (file-exists? filename)
-        (call-with-input-file (build-path tag-file-path filename)
+        (let ([v (call-with-input-file filename
-          read)
+                   read)])
-        '()))
+          (if (eof-object? v)
+              empty
+              v))
+        empty))
   
   ;; save-tag-list!: (listof (list bytes string)) string -> (listof (list bytes string))
   ;; save the tag list in the file system
   (define (save-tag-list! new-list filename)
-    (call-with-output-file (build-path tag-file-path filename)
+    (call-with-output-file filename
       (lambda (o-port)
         (write new-list o-port))
       'replace))
@@ -49,8 +52,8 @@
   (define delete-tag-list!
     (case-lambda
       [(filename)
-       (when (file-exists? (build-path tag-file-path filename))
+       (when (file-exists? filename)
-         (delete-file (build-path tag-file-path filename)))]
+         (delete-file filename))]
       [() (delete-tag-list! default-file-name)]))
   
   ;; lookup-tag: bytes string -> string

collects/web-server/prototype-web-server/tests/labels-tests.ss

@@ -2,12 +2,12 @@
   (require (planet "test.ss" ("schematics" "schemeunit.plt" 2))
            (planet "util.ss" ("schematics" "schemeunit.plt" 2))
            (lib "etc.ss")
-           "../labels.ss")
+           (lib "file.ss")
-           
+           "../lang/labels.ss")
+             
+  (require/expose (lib "labels.ss" "web-server" "prototype-web-server" "lang") (add1/string))
   
-  (require/expose (lib "labels.ss" "web-server" "prototype-web-server") (add1/string))
+  (define THE-TEST-FILENAME (make-temporary-file))
-  
-  (define THE-TEST-FILENAME "labels-test-file")
   
   (provide labels-tests-suite)
   
@@ -16,7 +16,7 @@
   (define l3 (make-labeling #"bar" THE-TEST-FILENAME))
   (define l4 (make-labeling #"baz" THE-TEST-FILENAME))
   
-  (define race-test-file "race-test-file")
+  (define race-test-file (make-temporary-file))
   
   (define (genbytes)
     (string->bytes/utf-8