From 9788df48a9638c6bf37bc161abefcee7f583b64c Mon Sep 17 00:00:00 2001
From: Tom Willemse
Date: Mon, 18 Nov 2013 01:03:10 +0100
Subject: Use git and filesystem as data back-end

---
 hypo.hy              | 111 ++++++++++++++++++++++++++-------------------------
 hypoctl              |  17 --------
 templates/image.html |   6 +--
 templates/main.html  |  14 +++----
 upgrade-git.hy       |  48 ++++++++++++++++++++++
 5 files changed, 115 insertions(+), 81 deletions(-)
 create mode 100755 upgrade-git.hy

diff --git a/hypo.hy b/hypo.hy
index b694596..b6026df 100755
--- a/hypo.hy
+++ b/hypo.hy
@@ -15,11 +15,12 @@
 ;; You should have received a copy of the GNU Affero General Public
 ;; License along with Hypo.  If not, see <http://www.gnu.org/licenses/>.
 
-(import web sys os hashlib datetime
+(import web sys os hashlib datetime shutil
         [pygments [highlight]]
         [pygments.lexers [get-lexer-by-name guess-lexer-for-filename]]
         [pygments.formatters [HtmlFormatter]]
-        [pygments.util [ClassNotFound]])
+        [pygments.util [ClassNotFound]]
+        [gittle [Gittle]])
 
 (try (import [config [*]])
      (catch [ImportError]
@@ -33,9 +34,6 @@
              (+ "/" *prefix* "dl/(.*)") "download"
              (+ "/" *prefix* "([a-f0-9]{7})$") "html"
              (+ "/" *prefix* "(.*)") "upload"))
-(def db
-  (kwapply (web.database)
-           {"dbn" "postgres" "user" *dbuser* "pw" *dbpw* "db" *dbname*}))
 
 (defun hashes [name]
   (let ((hasher (hashlib.sha1)))
@@ -59,11 +57,6 @@
   (setv web.ctx.status (str "404 Not Found"))
   "No such file.\n")
 
-(defun get-file [name]
-  (let ((res (kwapply (db.select "hfile" {"shash" name})
-                      {"where" "shash = $shash"})))
-    (if res (car res))))
-
 (defun get-lexer [filename content]
   "Try to guess the correct lexer by FILENAME and CONTENT.
 
@@ -74,67 +67,77 @@ If no lexer is found fallback onto the text lexer."
 
 (defclass raw []
   [[GET (lambda [self name]
-          (let ((filename (+ "files/" name))
-                (resp (if (os.path.exists filename)
-                        (read-file filename))))
+          (let ((dirname (+ "files/" (os.path.dirname name)))
+                (repo (and (os.path.exists dirname)
+                           (Gittle dirname)))
+                (resp (if repo
+                        (get (.commit-file
+                              repo "HEAD" (os.path.basename name))
+                             "data"))))
             (or resp (no-such-file))))]])
 
 (defclass download []
   [[GET (lambda [self name]
-          (let ((hfile (get-file name))
-                (filename (+ "files/" name)))
-            (if (and hfile (os.path.exists filename))
+          (let ((dirname (+ "files/" (os.path.dirname name)))
+                (repo (and (os.path.exists dirname)
+                           (Gittle dirname))))
+            (if repo
               (progn
                (web.header "Content-Disposition"
-                           (+ "attachment; filename=\""
-                              hfile.filename "\""))
-               (read-file filename))
+                           (+ "attachment; filename=\"" name "\""))
+               (get (.commit-file repo "HEAD"
+                                  (os.path.basename name)) "data"))
               (no-such-file))))]])
 
+(defun render-file [hash repo ref filename]
+  (if (not (os.path.isdir filename))
+    (let ((content (get (.commit-file repo ref filename) "data"))
+          (lexer (get-lexer filename content))
+          (formatter (HtmlFormatter))
+          (args {"file" filename "hash" hash}))
+      (.update
+       args (if (in (get (os.path.splitext filename) 1)
+                    [".png" ".jpg" ".jpeg" ".gif"])
+              {"content" (kwapply (render.image)
+                                  {"name" filename
+                                   "hash" hash})
+               "style" ""}
+              {"content" (highlight content lexer formatter)
+               "style" (formatter.get-style-defs ".highlight")}))
+      (kwapply (render.main) args))
+    ""))
+
 (defclass html []
   [[GET (lambda [self name]
-          (let ((hfile (get-file name))
-                (filename (+ "files/" name)))
-            (if (and hfile (os.path.exists filename))
-              (cond
-               ((= hfile.type "text")
-                (progn
-                 (let ((content (read-file filename))
-                       (lexer (get-lexer hfile.filename content))
-                       (formatter (HtmlFormatter)))
-                   (kwapply (render.main)
-                            {"content" (highlight content lexer
-                                                  formatter)
-                             "style" (formatter.get-style-defs
-                                      ".highlight")
-                             "file" hfile})
-                   )))
-               ((= hfile.type "image")
-                (kwapply (render.main)
-                         {"content" (kwapply (render.image)
-                                             {"name" name})
-                          "style" ""
-                          "file" hfile})))
+          (let ((dirname (+ "files/" name))
+                (repo (and (os.path.exists dirname)
+                           (Gittle dirname))))
+            (if repo
+              (car (list-comp (render-file name repo "HEAD" f)
+                              [f (.iterkeys (.commit-tree repo "HEAD"))]
+                              (not (or (= f ".")
+                                       (= f "..")))))
               (no-such-file))))]
 
    [DELETE (lambda [self name]
-             (let ((filename (+ "files/" name)))
-               (kwapply (db.delete "hfile")
-                        {"where" (+ "shash = '" name "'")})
-               (if (os.path.exists filename)
-                 (os.remove filename)
+             (let ((dirname (+ "files/" name)))
+               (if (os.path.exists dirname)
+                 (shutil.rmtree dirname)
                  (no-such-file))))]])
 
 (defclass upload []
   [[PUT (lambda [self name]
-          (let ((h (hashes name)))
-            (with [f (file (+ "files/" (get h 0)) "w")]
+          (let ((h (hashes name))
+                (dirname (+ "files/" (get h 0))))
+            (os.mkdir dirname)
+            (with [f (file (+ dirname "/" name) "w")]
                   (.write f (web.data)))
-            (kwapply (db.insert "hfile")
-                     {"shash" (get h 0)
-                      "hash" (get h 1)
-                      "filename" name
-                      "type" (get-type (get (os.path.splitext name) 1))})
+            (let ((repo (Gittle.init dirname)))
+              (.stage repo [(str name)])
+              (kwapply (repo.commit)
+                       {"name" "Hypo"
+                        "email" "hypo@ryuslash.org"
+                        "message" "Initial commit"}))
             (setv web.ctx.status (str "201 Created"))
             (+ web.ctx.home "/" *prefix* (get h 0) "\n")))]])
 
@@ -142,6 +145,6 @@ If no lexer is found fallback onto the text lexer."
   [[GET (lambda [self] (render.index))]])
 
 (defun hypo-start [argv]
-  (let ((sys.argv (cdr sys.argv))
+  (let ((sys.argv argv)
         (app (web.application urls (globals))))
     (.run app)))
diff --git a/hypoctl b/hypoctl
index 40a69a5..e57e9eb 100755
--- a/hypoctl
+++ b/hypoctl
@@ -18,21 +18,6 @@
 (import pycommand sys web os
         [hypo [hypo-start]])
 
-(try (import [config [*]])
-     (catch [ImportError]
-       (print "Please copy the config.example.hy to config.hy and set"
-              "the values to your preference.")
-       (sys.exit 1)))
-
-(def db
-  (kwapply (web.database)
-           {"dbn" "postgres" "user" *dbuser* "pw" *dbpw* "db" *dbname*}))
-
-(defun hypo-purge [argv]
-  (db.delete "hfile" "TRUE")
-  (foreach [f (os.listdir "files/")]
-    (os.remove (os.path.join "files" f))))
-
 (defclass hypoctl-command (pycommand.CommandBase)
   [[usagestr "usage: hypoctl <command> [<args]"]
    [description "Control hypo"]
@@ -40,8 +25,6 @@
           (cond
            ((not self.args)
             (progn (print self.usage) 2))
-           ((= (car self.args) "purge")
-            (hypo-purge (cdr self.args)))
            ((= (car self.args) "start")
             (hypo-start (cdr self.args)))
            (True
diff --git a/templates/image.html b/templates/image.html
index 7c02617..f49c13a 100644
--- a/templates/image.html
+++ b/templates/image.html
@@ -1,4 +1,4 @@
-$def with (name)
+$def with (name, hash)
 $# Hypo -- Quickly share stuff
 $# Copyright (C) 2013  Tom Willemse
 $#
@@ -15,6 +15,6 @@ $#
 $# You should have received a copy of the GNU Affero General Public
 $# License along with Hypo.  If not, see <http://www.gnu.org/licenses/>.
 
-<a href="raw/$name">
-  <img src="raw/$name" alt="$name">
+<a href="raw/$hash/$name">
+  <img src="raw/$hash/$name" alt="$name">
 </a>
diff --git a/templates/main.html b/templates/main.html
index d39d1a9..98fc6e8 100644
--- a/templates/main.html
+++ b/templates/main.html
@@ -1,4 +1,4 @@
-$def with (content, style, file)
+$def with (content, style, file, hash)
 $# Hypo -- Quickly share stuff
 $# Copyright (C) 2013  Tom Willemse
 $#
@@ -17,7 +17,7 @@ $# License along with Hypo.  If not, see <http://www.gnu.org/licenses/>.
 <!DOCTYPE html>
 <html>
   <head>
-    <title>Hypo: $file.filename</title>
+    <title>Hypo: $file</title>
     <link href="//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/2.3.2/css/bootstrap.min.css"
           type="text/css" rel="stylesheet" />
     <style>$:style</style>
@@ -27,15 +27,15 @@ $# License along with Hypo.  If not, see <http://www.gnu.org/licenses/>.
     <div class="navbar navbar-static-top navbar-inverse">
       <div class="navbar-inner">
         <a class="brand">Hypo</a>
-        <ul class="nav">
-          <li><a href="raw/$file.shash">Raw</a></li>
-          <li><a href="dl/$file.shash">Download</a></li>
-        </ul>
       </div>
     </div>
 
     <div class="container">
-      <h1>$file.filename</h1>
+      <h1>
+        $file
+        <a href="raw/$hash/$file"><i class="icon-file"></i></a>
+        <a href="dl/$hash/$file"><i class="icon-download"></i></a>
+      </h1>
 
       <div class="row">$:content</div>
 
diff --git a/upgrade-git.hy b/upgrade-git.hy
new file mode 100755
index 0000000..036f7c0
--- /dev/null
+++ b/upgrade-git.hy
@@ -0,0 +1,48 @@
+#!/usr/bin/env hy
+;; Hypo -- Quickly share stuff
+;; Copyright (C) 2013  Tom Willemse
+
+;; Hypo is free software: you can redistribute it and/or modify it
+;; under the terms of the GNU Affero General Public License as
+;; published by the Free Software Foundation, either version 3 of the
+;; License, or (at your option) any later version.
+
+;; Hypo is distributed in the hope that it will be useful, but WITHOUT
+;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+;; or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General
+;; Public License for more details.
+
+;; You should have received a copy of the GNU Affero General Public
+;; License along with Hypo.  If not, see <http://www.gnu.org/licenses/>.
+
+(import web os
+        [gittle [Gittle]])
+
+(try (import [config [*]])
+     (catch [ImportError]
+       (print "Please copy the config.example.hy to config.hy and set"
+              "the values to your preference.")
+       (sys.exit 1)))
+
+(def db
+  (kwapply (web.database)
+           {"dbn" "postgres" "user" *dbuser* "pw" *dbpw* "db" *dbname*}))
+
+(defun get-file [name]
+  (let ((res (kwapply (.select db "hfile" {"shash" name})
+                      {"where" "shash = $shash"})))
+    (if res (car res))))
+
+(foreach [f (os.listdir "files/")]
+  (let ((file (get-file f)))
+    (os.rename (+ "files/" f)
+               (+ "files/" file.filename))
+    (os.mkdir (+ "files/" f))
+    (os.rename (+ "files/" file.filename)
+               (+ "files/" f "/" file.filename))
+    (let ((repo (Gittle.init (+ "files/" f))))
+      (.stage repo [(str file.filename)])
+      (kwapply (repo.commit)
+               {"name" "System"
+                "email" "tom@ryuslash.org"
+                "message" "Initial commit for upgrade to git"}))))
-- 
cgit v1.2.3-54-g00ecf