#include <uci.h>
#define MODNAME "uci"
+#define METANAME MODNAME ".meta"
//#define DEBUG 1
#ifdef DEBUG
#define DPRINTF(...) do {} while (0)
#endif
-static struct uci_context *ctx = NULL;
-enum autoload {
- AUTOLOAD_OFF = 0,
- AUTOLOAD_ON = 1,
- AUTOLOAD_FORCE = 2
-};
+static struct uci_context *global_ctx = NULL;
+
+static struct uci_context *
+find_context(lua_State *L, int *offset)
+{
+ struct uci_context **ctx;
+ if (!lua_isuserdata(L, 1)) {
+ if (!global_ctx) {
+ global_ctx = uci_alloc_context();
+ if (!global_ctx)
+ luaL_error(L, "failed to allocate UCI context");
+ }
+ if (offset)
+ *offset = 0;
+ return global_ctx;
+ }
+ if (offset)
+ *offset = 1;
+ ctx = luaL_checkudata(L, 1, METANAME);
+ if (!ctx || !*ctx)
+ luaL_error(L, "failed to get UCI context");
+
+ return *ctx;
+}
static struct uci_package *
-find_package(lua_State *L, const char *str, enum autoload al)
+find_package(lua_State *L, struct uci_context *ctx, const char *str, bool al)
{
struct uci_package *p = NULL;
struct uci_element *e;
goto done;
}
- if (al == AUTOLOAD_FORCE)
+ if (al == true)
uci_load(ctx, name, &p);
else if (al) {
- do {
- lua_getfield(L, LUA_GLOBALSINDEX, "uci");
- lua_getfield(L, -1, "autoload");
- if (!lua_isboolean(L, -1))
- break;
-
- if (!lua_toboolean(L, -1))
- break;
-
- uci_load(ctx, name, &p);
- } while (0);
- lua_pop(L, 2);
+ uci_load(ctx, name, &p);
}
done:
return p;
}
-static void uci_lua_perror(lua_State *L, char *name)
+static void
+uci_lua_perror(lua_State *L, struct uci_context *ctx, char *name)
{
lua_getfield(L, LUA_GLOBALSINDEX, "uci");
lua_getfield(L, -1, "warn");
}
static int
-lookup_args(lua_State *L, struct uci_ptr *ptr, char **buf)
+lookup_args(lua_State *L, struct uci_context *ctx, int offset, struct uci_ptr *ptr, char **buf)
{
char *s = NULL;
int n;
n = lua_gettop(L);
- luaL_checkstring(L, 1);
- s = strdup(lua_tostring(L, 1));
+ luaL_checkstring(L, 1 + offset);
+ s = strdup(lua_tostring(L, 1 + offset));
if (!s)
goto error;
memset(ptr, 0, sizeof(struct uci_ptr));
- if (!find_package(L, s, AUTOLOAD_ON))
+ if (!find_package(L, ctx, s, true))
goto error;
- switch (n) {
+ switch (n - offset) {
case 4:
case 3:
- ptr->option = luaL_checkstring(L, 3);
+ ptr->option = luaL_checkstring(L, 3 + offset);
/* fall through */
case 2:
- ptr->section = luaL_checkstring(L, 2);
- ptr->package = luaL_checkstring(L, 1);
+ ptr->section = luaL_checkstring(L, 2 + offset);
+ ptr->package = luaL_checkstring(L, 1 + offset);
if (uci_lookup_ptr(ctx, ptr, NULL, false) != UCI_OK)
goto error;
break;
return 1;
}
-static void uci_push_option(lua_State *L, struct uci_option *o)
+static void
+uci_push_option(lua_State *L, struct uci_option *o)
{
struct uci_element *e;
int i = 0;
}
}
-static void uci_push_section(lua_State *L, struct uci_section *s)
+static void
+uci_push_section(lua_State *L, struct uci_section *s)
{
struct uci_element *e;
}
}
-static void uci_push_package(lua_State *L, struct uci_package *p)
+static void
+uci_push_package(lua_State *L, struct uci_package *p)
{
struct uci_element *e;
int i = 0;
static int
uci_lua_unload(lua_State *L)
{
+ struct uci_context *ctx;
struct uci_package *p;
const char *s;
+ int offset = 0;
- luaL_checkstring(L, 1);
- s = lua_tostring(L, -1);
- p = find_package(L, s, AUTOLOAD_OFF);
+ ctx = find_context(L, &offset);
+ luaL_checkstring(L, 1 + offset);
+ s = lua_tostring(L, 1 + offset);
+ p = find_package(L, ctx, s, false);
if (p) {
uci_unload(ctx, p);
lua_pushboolean(L, 1);
static int
uci_lua_load(lua_State *L)
{
+ struct uci_context *ctx;
struct uci_package *p = NULL;
const char *s;
+ int offset = 0;
+ ctx = find_context(L, &offset);
uci_lua_unload(L);
lua_pop(L, 1); /* bool ret value of unload */
s = lua_tostring(L, -1);
if (uci_load(ctx, s, &p)) {
- uci_lua_perror(L, "uci.load");
+ uci_lua_perror(L, ctx, "uci.load");
lua_pushboolean(L, 0);
} else {
lua_pushboolean(L, 1);
static int
uci_lua_foreach(lua_State *L)
{
+ struct uci_context *ctx;
struct uci_package *p;
struct uci_element *e;
const char *package, *type;
bool ret = false;
+ int offset = 0;
- package = luaL_checkstring(L, 1);
+ ctx = find_context(L, &offset);
+ package = luaL_checkstring(L, 1 + offset);
if (lua_isnil(L, 2))
type = NULL;
else
- type = luaL_checkstring(L, 2);
+ type = luaL_checkstring(L, 2 + offset);
- if (!lua_isfunction(L, 3) || !package)
+ if (!lua_isfunction(L, 3 + offset) || !package)
luaL_error(L, "Invalid argument");
- p = find_package(L, package, AUTOLOAD_ON);
+ p = find_package(L, ctx, package, true);
if (!p)
goto done;
if (type && (strcmp(s->type, type) != 0))
continue;
- lua_pushvalue(L, 3); /* iterator function */
+ lua_pushvalue(L, 3 + offset); /* iterator function */
uci_push_section(L, s);
if (lua_pcall(L, 1, 0, 0) == 0)
ret = true;
static int
uci_lua_get_any(lua_State *L, bool all)
{
+ struct uci_context *ctx;
struct uci_element *e = NULL;
struct uci_ptr ptr;
+ int offset = 0;
char *s = NULL;
int err = UCI_ERR_NOTFOUND;
- if (lookup_args(L, &ptr, &s))
+ ctx = find_context(L, &offset);
+
+ if (lookup_args(L, ctx, offset, &ptr, &s))
goto error;
uci_lookup_ptr(ctx, &ptr, NULL, false);
switch(err) {
default:
ctx->err = err;
- uci_lua_perror(L, "uci.get");
+ uci_lua_perror(L, ctx, "uci.get");
/* fall through */
case UCI_ERR_NOTFOUND:
lua_pushnil(L);
static int
uci_lua_add(lua_State *L)
{
+ struct uci_context *ctx;
struct uci_section *s = NULL;
struct uci_package *p;
const char *package;
const char *type;
const char *name = NULL;
+ int offset = 0;
- do {
- package = luaL_checkstring(L, 1);
- type = luaL_checkstring(L, 2);
- p = find_package(L, package, AUTOLOAD_ON);
- if (!p)
- break;
-
- if (uci_add_section(ctx, p, type, &s) || !s)
- break;
+ ctx = find_context(L, &offset);
+ package = luaL_checkstring(L, 1 + offset);
+ type = luaL_checkstring(L, 2 + offset);
+ p = find_package(L, ctx, package, true);
+ if (!p)
+ goto fail;
- name = s->e.name;
- } while (0);
+ if (uci_add_section(ctx, p, type, &s) || !s)
+ goto fail;
+ name = s->e.name;
lua_pushstring(L, name);
return 1;
+
+fail:
+ lua_pushnil(L);
+ return 1;
}
static int
uci_lua_delete(lua_State *L)
{
+ struct uci_context *ctx;
struct uci_ptr ptr;
+ int offset = 0;
char *s = NULL;
int err = UCI_ERR_NOTFOUND;
- if (lookup_args(L, &ptr, &s))
+ ctx = find_context(L, &offset);
+
+ if (lookup_args(L, ctx, offset, &ptr, &s))
goto error;
err = uci_delete(ctx, &ptr);
if (s)
free(s);
if (err)
- uci_lua_perror(L, "uci.delete");
+ uci_lua_perror(L, ctx, "uci.delete");
lua_pushboolean(L, (err == 0));
return 1;
}
static int
uci_lua_set(lua_State *L)
{
- bool istable = false;
+ struct uci_context *ctx;
struct uci_ptr ptr;
+ bool istable = false;
int err = UCI_ERR_MEM;
char *s = NULL;
- int i, nargs;
+ int i, nargs, offset = 0;
+ ctx = find_context(L, &offset);
nargs = lua_gettop(L);
- if (lookup_args(L, &ptr, &s))
+ if (lookup_args(L, ctx, offset, &ptr, &s))
goto error;
- switch(nargs) {
+ switch(nargs - offset) {
case 1:
/* Format: uci.set("p.s.o=v") or uci.set("p.s=v") */
break;
error:
if (err)
- uci_lua_perror(L, "uci.set");
+ uci_lua_perror(L, ctx, "uci.set");
lua_pushboolean(L, (err == 0));
return 1;
}
static int
uci_lua_package_cmd(lua_State *L, enum pkg_cmd cmd)
{
+ struct uci_context *ctx;
struct uci_element *e, *tmp;
struct uci_ptr ptr;
char *s = NULL;
int failed = 0;
- int nargs;
+ int nargs, offset = 0;
+ ctx = find_context(L, &offset);
nargs = lua_gettop(L);
if ((cmd != CMD_REVERT) && (nargs > 1))
goto err;
- if (lookup_args(L, &ptr, &s))
+ if (lookup_args(L, ctx, offset, &ptr, &s))
goto err;
uci_lookup_ptr(ctx, &ptr, NULL, false);
}
static void
-uci_lua_changes_pkg(lua_State *L, const char *package)
+uci_lua_changes_pkg(lua_State *L, struct uci_context *ctx, const char *package)
{
struct uci_package *p = NULL;
struct uci_element *e;
bool autoload = false;
- p = find_package(L, package, AUTOLOAD_OFF);
+ p = find_package(L, ctx, package, false);
if (!p) {
autoload = true;
- p = find_package(L, package, AUTOLOAD_FORCE);
+ p = find_package(L, ctx, package, true);
if (!p)
return;
}
static int
uci_lua_changes(lua_State *L)
{
+ struct uci_context *ctx;
const char *package = NULL;
char **config = NULL;
int nargs;
- int i;
+ int i, offset = 0;
+ ctx = find_context(L, &offset);
nargs = lua_gettop(L);
- switch(nargs) {
+ switch(nargs - offset) {
case 1:
- package = luaL_checkstring(L, 1);
+ package = luaL_checkstring(L, 1 + offset);
case 0:
break;
default:
lua_newtable(L);
if (package) {
- uci_lua_changes_pkg(L, package);
+ uci_lua_changes_pkg(L, ctx, package);
} else {
if (uci_list_configs(ctx, &config) != 0)
goto done;
for(i = 0; config[i] != NULL; i++) {
- uci_lua_changes_pkg(L, config[i]);
+ uci_lua_changes_pkg(L, ctx, config[i]);
}
}
static int
uci_lua_get_confdir(lua_State *L)
{
+ struct uci_context *ctx = find_context(L, NULL);
lua_pushstring(L, ctx->confdir);
return 1;
}
static int
uci_lua_set_confdir(lua_State *L)
{
- int ret;
+ struct uci_context *ctx;
+ int ret, offset = 0;
- luaL_checkstring(L, 1);
+ ctx = find_context(L, &offset);
+ luaL_checkstring(L, 1 + offset);
ret = uci_set_confdir(ctx, lua_tostring(L, -1));
lua_pushboolean(L, (ret == 0));
return 1;
static int
uci_lua_get_savedir(lua_State *L)
{
+ struct uci_context *ctx = find_context(L, NULL);
lua_pushstring(L, ctx->savedir);
return 1;
}
static int
uci_lua_set_savedir(lua_State *L)
{
- int ret;
+ struct uci_context *ctx;
+ int ret, offset = 0;
- luaL_checkstring(L, 1);
+ ctx = find_context(L, &offset);
+ luaL_checkstring(L, 1 + offset);
ret = uci_set_savedir(ctx, lua_tostring(L, -1));
lua_pushboolean(L, (ret == 0));
return 1;
}
+static int
+uci_lua_gc(lua_State *L)
+{
+ struct uci_context *ctx = find_context(L, NULL);
+ uci_free_context(ctx);
+ return 0;
+}
+
+static int
+uci_lua_cursor(lua_State *L)
+{
+ struct uci_context **u;
+ int argc = lua_gettop(L);
+
+ u = lua_newuserdata(L, sizeof(struct uci_context *));
+ luaL_getmetatable(L, METANAME);
+ lua_setmetatable(L, -2);
+
+ *u = uci_alloc_context();
+ if (!*u)
+ luaL_error(L, "Cannot allocate UCI context");
+ switch (argc) {
+ case 2:
+ if (lua_isstring(L, 2) &&
+ (uci_set_savedir(*u, luaL_checkstring(L, 2)) != UCI_OK))
+ luaL_error(L, "Unable to set savedir");
+ /* fall through */
+ case 1:
+ if (lua_isstring(L, 1) &&
+ (uci_set_confdir(*u, luaL_checkstring(L, 1)) != UCI_OK))
+ luaL_error(L, "Unable to set savedir");
+ break;
+ default:
+ break;
+ }
+ return 1;
+}
+
static const luaL_Reg uci[] = {
+ { "__gc", uci_lua_gc },
+ { "cursor", uci_lua_cursor },
{ "load", uci_lua_load },
{ "unload", uci_lua_unload },
{ "get", uci_lua_get },
int
luaopen_uci(lua_State *L)
{
- ctx = uci_alloc_context();
- if (!ctx)
- luaL_error(L, "Cannot allocate UCI context\n");
- luaL_register(L, MODNAME, uci);
+ /* create metatable */
+ luaL_newmetatable(L, METANAME);
- /* enable autoload by default */
- lua_getfield(L, LUA_GLOBALSINDEX, "uci");
- lua_pushboolean(L, 1);
- lua_setfield(L, -2, "autoload");
+ /* metatable.__index = metatable */
+ lua_pushvalue(L, -1);
+ lua_setfield(L, -2, "__index");
+
+ /* fill metatable */
+ luaL_register(L, NULL, uci);
lua_pop(L, 1);
+ /* create module */
+ luaL_register(L, MODNAME, uci);
+
return 0;
}
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