Map where filter needed.

pre-commit

@@ -9,7 +9,7 @@
 ; below.
 
 (def *config-path* (os.path.join (.get os.environ "GIT_DIR" "./.git") "pccs"))
-(def *modified* (.compile re "^[MA]\s+(?P<name>.*)$"))
+(def *git-modified-pattern* (.compile re "^[MA]\s+(?P<name>.*)$"))
 
 (def *checks*
   [
@@ -58,7 +58,7 @@
    ]
   )
 
-(defn get-git-value [cmd]
+(defn get-git-response [cmd]
   (let [[fullcmd (+ ["git"] cmd)]
         [process (subprocess.Popen fullcmd
                                    :stdout subprocess.PIPE
@@ -72,7 +72,7 @@
                      :stdout subprocess.PIPE
                      :stderr subprocess.PIPE)))
 
-(defn get-shell-value [fullcmd]
+(defn get-shell-response [fullcmd]
   (let [[process (subprocess.Popen fullcmd
                                    :stdout subprocess.PIPE
                                    :stderr subprocess.PIPE
@@ -88,34 +88,34 @@
 (defn derive-message-bodies [code-pairs]
   (lmap (fn [i] (get i 1)) code-pairs))
 
-(defn matches-file [filename match-files]
-  (any (map (fn [match-file] (-> (.compile re match-file) 
-                                 (.match filename))) 
-            match-files)))
-
-; Hy is overeager to return an iterators which is consumed during
-; later traversal.  lmap returns a concrete list instead.
-
 (defn lmap (pred iter) (list (map pred iter)))
 
+(defn encode-shell-messages [prefix messages]
+  (lmap (fn [line] (.format "{}{}" prefix (.decode line "utf-8")))
+        (.splitlines messages)))
+
 (defn run-external-checker [filename check]
-  (let [[cmd (-> (get check "command") (.format 
-                                        :filename filename 
-                                        :config_path *config-path*))]
-        [(, out err returncode) (get-shell-value cmd)]]
+  (let [[cmd (-> (get check "command")
+                 (.format
+                  :filename filename
+                  :config_path *config-path*))]
+        [(, out err returncode) (get-shell-response cmd)]]
     (if (or (and out (= (.get check "error_condition" "error") "output"))
             err
             (not (= returncode 0)))
       (let [[prefix (if (get check "print_filename")
                       (.format "\t{}:" filename)
                       "\t")]
-            [output (+ 
-                     (lmap (fn [line] (.format "{}{}" prefix (.decode line "utf-8"))) 
-                           (.splitlines out))
-                     (if err [err] []))]]
+            [output (+ (encode-shell-messages prefix out)
+                       (if err (encode-shell-messages prefix err) []))]]
         [(or returncode 1) output])
       [0 []])))
 
+(defn matches-file [filename match-files]
+  (any (map (fn [match-file] (-> (.compile re match-file)
+                                 (.match filename)))
+            match-files)))
+
 (defn check-scan-wanted [filename check]
   (cond [(and (in "match_files" check)
               (not (matches-file filename (get check "match_files")))) false]
@@ -123,35 +123,40 @@
               (matches-file filename (get check "ignore_files"))) false]
         [true true]))
 
+(defn tap [x] (print x) x)
+
 (defn check-files [filenames check]
   (let [[filenames-to-check
-         (lmap (fn [filename] (check-scan-wanted filename check)) filenames)]
-        [scan-results
+         (filter (fn [filename] (check-scan-wanted filename check)) filenames)]
+        [results-of-checks
          (lmap (fn [filename]
                  (run-external-checker filename check)) filenames-to-check)]
-        [messages (+ [(get check "output")] (derive-message-bodies scan-results))]]
-    [(derive-max-code scan-results) messages]))
+        [messages (+ [(get check "output")] 
+                     (derive-message-bodies results-of-checks))]]
+    [(derive-max-code results-of-checks) messages]))
 
 (defn gather-all-filenames []
   (let [[build-filenames
          (fn [filenames]
            (map
             (fn [f] (os.path.join (get filenames 0) f)) (get filenames 2)))]]
-    (list (flatten (list-comp (build-filenames o) [o (.walk os ".")])))))
-
-; I removed the originally recommended "-u" command from stash; it was
-; "cleaning up" far too zealously, deleting my node_modules directory
+    (list
+     (flatten
+      (list-comp (build-filenames o) [o (.walk os ".")])))))
 
 (defn gather-staged-filenames [against]
   (let [[(, out err returncode)
-         (get-git-value ["diff-index" "--name-status" against])]
+         (get-git-response ["diff-index" "--name-status" against])]
         [lines (.splitlines out)]
-        [matcher (fn [line] (.match *modified* (.decode line "utf-8")))]]
-    (list (filter 
-     (fn [x] (not (= x "")))
-     (list-comp (.group match "name") [match (map matcher lines)] match)))))
+        [matcher 
+         (fn [line] 
+           (.match *git-modified-pattern* (.decode line "utf-8")))]]
+    (list
+     (filter
+      (fn [x] (not (= x "")))
+      (list-comp (.group match "name") [match (map matcher lines)] match)))))
 
-(defn scan-files [scan-all-files against]
+(defn run-checks-for [scan-all-files against]
   (do
    (run-git-command ["stash" "--keep-index"])
    (let [[filenames-to-scan
@@ -170,10 +175,9 @@
 
 (defn get-head-tag []
   (let [[empty-repository-hash "4b825dc642cb6eb9a060e54bf8d69288fbee4904"]
-        [(, out err returncode) (get-git-value ["rev-parse" "--verify HEAD"])]]
+        [(, out err returncode) (get-git-response ["rev-parse" "--verify HEAD"])]]
     (if err empty-repository-hash "HEAD")))
 
 (defmain [&rest args]
   (let [[scan-all-files (and (> (len args) 1) (= (get args 2) "--all-files"))]]
-    (sys.exit (scan-files scan-all-files (get-head-tag)))))
-
+    (sys.exit (run-checks-for scan-all-files (get-head-tag)))))