Start phasing out internal copy of Lua

- don't build internal copy of Lua
- move 3rd party extensions (posix and rexlib) to toplevel luaext/
  directory, built by default (unless --without-lua specified)
- auto*foo checks for external Lua
- minimal tweaks to lposix.c and rpmlua.c to get them build with Lua 5.1

1 files changed, 57 insertions, 0 deletions

diff --git a/luaext/userconfig.c b/luaext/userconfig.c
new file mode 100644
index 000000000..014e32536
--- /dev/null
+++ b/luaext/userconfig.c
@@ -0,0 +1,57 @@
+
+#include "config.h"
+
+#include "lposix.h"
+#include "lrexlib.h"
+
+#define LUA_EXTRALIBS \
+	{"posix", luaopen_posix}, \
+	{"rex", luaopen_rex}, \
+	{"luapath", luapath},
+
+#if 0
+
+#define lua_readline	myreadline
+#define lua_saveline	mysaveline
+
+#include <ctype.h>
+#include <readline/readline.h>
+#include <readline/history.h>
+
+static int myreadline (lua_State *L, const char *prompt) {
+  char *s=readline(prompt);
+  if (s==NULL)
+    return 0;
+  else {
+    lua_pushstring(L,s);
+    lua_pushliteral(L,"\n");
+    lua_concat(L,2);
+    free(s);
+    return 1;
+  }
+}
+
+static void mysaveline (lua_State *L, const char *s) {
+  const char *p;
+  for (p=s; isspace(*p); p++);
+  if (*p!=0) {
+    size_t n=strlen(s)-1;
+    if (s[n]!='\n')
+      add_history(s);
+    else {
+      lua_pushlstring(L,s,n);
+      s=lua_tostring(L,-1);
+      add_history(s);
+      lua_remove(L,-1);
+    }
+  }
+}
+#endif
+
+static int luapath(lua_State *L)
+{
+	lua_pushstring(L, "LUA_PATH");
+	lua_pushstring(L, RPMCONFIGDIR "/lua/?.lua;?.lua");
+	lua_rawset(L, LUA_GLOBALSINDEX);
+	return 0;
+}