From 7aed449427348824f7fbfc0e9dc698ea6519f91e Mon Sep 17 00:00:00 2001
From: Natanael Copa <ncopa@alpinelinux.org>
Date: Sat, 6 Mar 2010 19:07:38 +0000
Subject: lua: initial lua module

---
 Makefile      |  3 ++-
 src/Makefile  | 12 +++++++++--
 src/lua-apk.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 76 insertions(+), 3 deletions(-)
 create mode 100644 src/lua-apk.c

diff --git a/Makefile b/Makefile
index 50d5b03..9fd6422 100644
--- a/Makefile
+++ b/Makefile
@@ -13,8 +13,9 @@ LIBDIR		:= /lib
 CONFDIR		:= /etc/apk
 MANDIR		:= /usr/share/man
 DOCDIR		:= /usr/share/doc/apk
+LUA_LIBDIR	:= /usr/lib/lua/5.1
 
-export DESTDIR SBINDIR LIBDIR CONFDIR MANDIR DOCDIR
+export DESTDIR SBINDIR LIBDIR CONFDIR MANDIR DOCDIR LUA_LIBDIR
 
 ##
 # Top-level rules and targets
diff --git a/src/Makefile b/src/Makefile
index b0b2a67..a7f1419 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -8,6 +8,11 @@ shlibs-y		+= libapk.so
 libapk.so-objs		:= common.o state.o database.o package.o archive.o \
 			   version.o io.o url.o gunzip.o blob.o hash.o print.o
 
+shlibs-y		+= apk.so
+apk.so-objs		:= lua-apk.o
+CFLAGS_lua-apk.o	:= -DAPK_VERSION=\"$(FULL_VERSION)\"
+LIBS_apk.so		:= -L$(obj) -llua -lapk
+
 progs-y			+= apk
 apk-objs		:= apk.o add.o del.o fix.o update.o info.o \
 			   search.o upgrade.o cache.o ver.o index.o fetch.o \
@@ -30,8 +35,11 @@ LIBS			:= -Wl,--as-needed \
 
 $(obj)/apk:	$(obj)/libapk.so
 
-install: $(obj)/apk $(obj)/libapk.so
-	$(INSTALLDIR) $(DESTDIR)$(SBINDIR) $(DESTDIR)$(LIBDIR)
+$(obj)/apk.so:	$(obj)/libapk.so
+
+install: $(obj)/apk $(obj)/libapk.so $(obj)/apk.so
+	$(INSTALLDIR) $(addprefix $(DESTDIR),$(SBINDIR) $(LIBDIR) $(LUA_LIBDIR))
 	$(INSTALL) $(obj)/apk $(DESTDIR)$(SBINDIR)
 	$(INSTALL) $(obj)/libapk.so $(DESTDIR)$(LIBDIR)
+	$(INSTALL) $(obj)/apk.so $(DESTDIR)$(LUA_LIBDIR)
 
diff --git a/src/lua-apk.c b/src/lua-apk.c
new file mode 100644
index 0000000..efd7c3e
--- /dev/null
+++ b/src/lua-apk.c
@@ -0,0 +1,64 @@
+#include <lua.h>
+#include <lualib.h>
+#include <lauxlib.h>
+
+#include "apk_defines.h"
+#include "apk_version.h"
+#include "apk_blob.h"
+
+#define LIBNAME "apk"
+
+int apk_verbosity;
+unsigned int apk_flags;
+
+/* version_validate(verstr) */
+/* returns boolean */
+static int Pversion_validate(lua_State *L)
+{
+	apk_blob_t ver;
+	ver.ptr = (char *)luaL_checklstring(L, 1, &ver.len);
+	lua_pushboolean(L, apk_version_validate(ver));
+	return 1;
+}
+
+/* version_compare(verstr1, verstr2)
+   returns either '<', '=' or '>'
+*/
+static int Pversion_compare(lua_State *L)
+{
+	apk_blob_t a, b;
+	a.ptr = (char *)luaL_checklstring(L, 1, &a.len);
+	b.ptr = (char *)luaL_checklstring(L, 2, &b.len);
+	lua_pushstring(L, apk_version_op_string(apk_version_compare_blob(a, b)));
+	return 1;
+}
+
+/* version_is_less(verstr1, verstr2)
+   returns either '<', '=' or '>'
+*/
+static int Pversion_is_less(lua_State *L)
+{
+	apk_blob_t a, b;
+	a.ptr = (char *)luaL_checklstring(L, 1, &a.len);
+	b.ptr = (char *)luaL_checklstring(L, 2, &b.len);
+	lua_pushboolean(L, apk_version_compare_blob(a, b) == APK_VERSION_LESS);
+	return 1;
+}
+
+
+static const luaL_reg R[] = {
+	{"version_validate",	Pversion_validate},
+	{"version_compare",	Pversion_compare},
+	{"version_is_less",	Pversion_is_less},
+	{NULL,		NULL}
+};
+
+LUALIB_API int luaopen_apk(lua_State *L)
+{
+	luaL_register(L, LIBNAME, R);
+	lua_pushliteral(L, "version");
+	lua_pushliteral(L, APK_VERSION);
+	lua_settable(L, -3);
+	return 1;
+}
+
-- 
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