stable 2010-05-24 13:10

1 files changed, 71 insertions, 0 deletions

diff --git a/tex/context/base/luat-exe.lua b/tex/context/base/luat-exe.lua
new file mode 100644
index 000000000..ca3b75162
--- /dev/null
+++ b/tex/context/base/luat-exe.lua
@@ -0,0 +1,71 @@
+if not modules then modules = { } end modules ['luat-exe'] = {
+    version   = 1.001,
+    comment   = "companion to luat-lib.mkiv",
+    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files"
+}
+
+local match, find = string.match, string.find
+local concat = table.concat
+
+if not executer then executer = { } end
+
+executer.permitted = { }
+executer.execute   = os.execute
+
+function executer.register(...)
+    local ep = executer.permitted
+    local t = { ... }
+    for k=1,#t do
+        local v = t[k]
+        ep[#ep+1] = (v == "*" and ".*") or v
+    end
+end
+
+function executer.finalize() -- todo: os.exec, todo: report ipv print
+    local execute = os.execute
+    function executer.execute(...)
+        local t, name, arguments = {...}, "", ""
+        if #t == 1 then
+            if type(t[1]) == 'table' then
+                name, arguments = t[1], concat(t," ",2,#t)
+            else
+                name, arguments = match(t[1],"^(.-)%s+(.+)$")
+                if not (name and arguments) then
+                    name, arguments = t[1], ""
+                end
+            end
+        else
+            name, arguments = t[1], concat(t," ",2,#t)
+        end
+        local permitted = executer.permitted
+        for k=1,#permitted do
+            local v = permitted[k]
+            if find(name,v) then
+                execute(name .. " " .. arguments)
+            --  print("executed: " .. name .. " " .. arguments)
+            else
+                print("not permitted: " .. name .. " " .. arguments)
+            end
+        end
+    end
+    function executer.finalize()
+        print("executer is already finalized")
+    end
+    function executer.register(name)
+        print("executer is already finalized")
+    end
+    os.execute = executer.execute
+end
+
+--~ executer.register('.*')
+--~ executer.register('*')
+--~ executer.register('dir','ls')
+--~ executer.register('dir')
+
+--~ executer.finalize()
+--~ executer.execute('dir',"*.tex")
+--~ executer.execute("dir *.tex")
+--~ executer.execute("ls *.tex")
+--~ os.execute('ls')