From 237470c8f45190b213e3a173ce6ae1a74b3e11fe Mon Sep 17 00:00:00 2001
From: "Adrian C. (anrxc)" <anrxc@sysphere.org>
Date: Sun, 14 Mar 2010 01:55:33 +0100
Subject: API: transform widgets namespace table to a directory

---
 widgets/mboxc.lua | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 widgets/mboxc.lua

(limited to 'widgets/mboxc.lua')

diff --git a/widgets/mboxc.lua b/widgets/mboxc.lua
new file mode 100644
index 0000000..c5f694c
--- /dev/null
+++ b/widgets/mboxc.lua
@@ -0,0 +1,55 @@
+---------------------------------------------------
+-- Licensed under the GNU General Public License v2
+--  * (c) 2010, Adrian C. <anrxc@sysphere.org>
+---------------------------------------------------
+
+-- {{{ Grab environment
+local io = { open = io.open }
+local setmetatable = setmetatable
+local string = { find = string.find }
+-- }}}
+
+
+-- Mboxc: provides the count of total, old and new messages in mbox files
+module("vicious.widgets.mboxc")
+
+
+-- {{{ Mbox count widget type
+local function worker(format, warg)
+    -- Initialise counters
+    local count = { old = 0, total = 0, new = 0 }
+
+    -- Get data from mbox files
+    for i=1, #warg do
+        local f = io.open(warg[i])
+
+        while true do
+            -- Read the mbox line by line, if we are going to read
+            -- some *HUGE* folders then switch to reading chunks
+            local lines = f:read("*line")
+            if not lines then break end
+
+            -- Find all messages
+            --  * http://www.jwz.org/doc/content-length.html
+            local _, from = string.find(lines, "^From[%s]")
+            if from ~= nil then count.total = count.total + 1 end
+
+            -- Read messages have the Status header
+            local _, status = string.find(lines, "^Status:[%s]RO$")
+            if status ~= nil then count.old = count.old + 1 end
+
+            -- Skip the folder internal data
+            local _, int = string.find(lines, "^Subject:[%s].*FOLDER[%s]INTERNAL[%s]DATA")
+            if int ~= nil then count.total = count.total - 1 end
+        end
+        f:close()
+    end
+
+    -- Substract total from old to get the new count
+    count.new = count.total - count.old
+
+    return {count.total, count.old, count.new}
+end
+-- }}}
+
+setmetatable(_M, { __call = function(_, ...) return worker(...) end })
-- 
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