author | Myhailo Danylenko <isbear@ukrpost.net> |
Sun, 05 Apr 2009 16:55:48 +0300 | |
changeset 18 | 6effa1929af7 |
parent 16 | 09b375e9ce32 |
child 19 | d775d7289fe4 |
permissions | -rw-r--r-- |
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#include <lua.h> |
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#include <lauxlib.h> |
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#include <loudmouth/loudmouth.h> |
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#include "config.h" |
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#include "lm_types.h" |
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/// lm.message_node |
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/// Object, representing xml node of the message. |
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/// Cannot be created directly, only as a part of message tree. |
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/// lm.message_node.bless |
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/// Blesses given pointer to lm message node object. |
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/// A: lightuserdata (C lm message node object) |
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/// R: lm message node object |
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static int bless_lua_lm_node (lua_State *L) |
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{ |
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luaL_argcheck (L, lua_islightuserdata (L, 1), 1, "loudmouth message node lightuserdata expected"); |
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bless_lm_node (L, lua_touserdata (L, 1)); |
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return 1; |
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} |
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/// message_node:name |
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/// Gets a name of message node. |
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/// R: string |
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int name_lm_node (lua_State *L) |
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{ |
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LmMessageNode *node = luaL_checkLmMessageNode (L, 1); |
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lua_pushstring (L, node->name); |
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return 1; |
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} |
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/// message_node:next |
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/// Gets next message node. |
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/// R: lm message node object or nil |
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int next_lm_node (lua_State *L) |
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{ |
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LmMessageNode *node = luaL_checkLmMessageNode (L, 1); |
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LmMessageNode *next = node->next; |
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if (next) |
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bless_lm_node (L, next); |
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else |
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lua_pushnil (L); |
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return 1; |
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} |
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/// message_node:prev |
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/// Gets previous message node. |
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/// R: lm message node object or nil |
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int prev_lm_node (lua_State *L) |
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{ |
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LmMessageNode *node = luaL_checkLmMessageNode (L, 1); |
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LmMessageNode *prev = node->prev; |
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if (prev) |
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bless_lm_node (L, prev); |
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else |
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lua_pushnil (L); |
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return 1; |
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} |
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/// message_node:parent |
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/// Gets parent message node. |
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/// R: lm message node object or nil |
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int parent_lm_node (lua_State *L) |
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{ |
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LmMessageNode *node = luaL_checkLmMessageNode (L, 1); |
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LmMessageNode *parent = node->parent; |
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if (parent) |
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bless_lm_node (L, parent); |
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else |
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lua_pushnil (L); |
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return 1; |
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} |
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/// message_node:value |
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/// Gets or sets a value of message node. |
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/// A: string (optional value) |
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/// R: string (if called without arguments) or lm message node object |
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int value_lm_node (lua_State *L) |
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{ |
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LmMessageNode *node = luaL_checkLmMessageNode (L, 1); |
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if (lua_gettop (L) > 1) { // Set |
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const char *value = luaL_checkstring (L, 2); |
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lm_message_node_set_value (node, value); |
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lua_pop (L, 1); |
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} else // Get |
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lua_pushstring (L, lm_message_node_get_value (node)); |
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return 1; |
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} |
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/// message_node:child |
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/// Gets or creates child node object with given name. |
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/// If name is omitted, first child node is returned. |
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/// A: string (name, optional), string (optional value) |
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/// R: lm message node object or nil |
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int child_lm_node (lua_State *L) |
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{ |
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LmMessageNode *node = luaL_checkLmMessageNode (L, 1); |
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LmMessageNode *child; |
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int top = lua_gettop (L); |
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if (top > 1) { |
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const char *name = luaL_checkstring (L, 2); |
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if (top > 2) // Add |
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child = lm_message_node_add_child (node, name, |
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luaL_checkstring (L, 3)); |
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else // Get |
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child = lm_message_node_get_child (node, name); |
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} else |
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child = node->children; |
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if (child) |
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bless_lm_node (L, child); |
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// XXX lm_message_node_unref (child); // may be necessary on _get/_add'ed nodes |
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else |
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lua_pushnil (L); |
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return 1; |
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} |
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/// message_node:find_child |
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/// Searches for node with a given name over all node subtree. |
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/// A: string (name) |
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/// R: lm message node object or nil |
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int find_child_lm_node (lua_State *L) |
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{ |
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LmMessageNode *node = luaL_checkLmMessageNode (L, 1); |
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const char *name = luaL_checkstring (L, 2); |
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LmMessageNode *child; |
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child = lm_message_node_get_child (node, name); |
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if (!child) |
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lua_pushnil (L); |
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else { |
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bless_lm_node (L, child); |
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// XXX lm_message_node_unref (child); |
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} |
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return 1; |
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} |
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/// message_node:raw |
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/// Gets or sets raw mode flag for node. |
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/// When set, value of node will not be escaped. |
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/// A: boolean (optional) |
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/// V: boolean (if called with no apguments) or lm message node object |
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int raw_lm_node (lua_State *L) |
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{ |
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LmMessageNode *node = luaL_checkLmMessageNode (L, 1); |
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if (lua_gettop (L) > 1) { // Set |
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luaL_checktype (L, 2, LUA_TBOOLEAN); |
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lm_message_node_set_raw_mode (node, lua_toboolean (L, 2)); |
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lua_pop (L, 1); |
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} else // Get |
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lua_pushboolean (L, lm_message_node_get_raw_mode (node)); |
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return 1; |
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} |
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/// message_node:attribute |
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/// Gets or sets value of node attribute with a given name. |
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/// A: string (name), string (optional value) |
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/// R: string (when called with one aprgument) or lm message node object |
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int attribute_lm_node (lua_State *L) |
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{ |
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LmMessageNode *node = luaL_checkLmMessageNode (L, 1); |
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const char *name = luaL_checkstring (L, 2); |
166 |
if (lua_gettop (L) > 2) { // Set |
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lm_message_node_set_attribute (node, name, luaL_checkstring (L, 3)); |
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lua_pop (L, 2); |
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} else // Get |
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lua_pushstring (L, lm_message_node_get_attribute (node, name)); |
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return 1; |
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} |
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/// message_node:xml |
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175 |
/// Returns node representation in xml. |
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176 |
/// R: string |
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int xml_lm_node (lua_State *L) |
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{ |
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LmMessageNode *node = luaL_checkLmMessageNode (L, 1); |
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lua_pushstring (L, lm_message_node_to_string (node)); |
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return 1; |
182 |
} |
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8 | 184 |
/// message_node:path |
185 |
/// Returns node with specified path to it. |
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186 |
/// If any element in a path cannot be found, it returns nil. |
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/// A: string (node name), ... |
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/// R: lm message node object or nil |
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int path_lm_node (lua_State *L) |
8 | 190 |
{ |
191 |
LmMessageNode *node = luaL_checkLmMessageNode (L, 1); |
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192 |
int i = 1; |
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193 |
while (i++ < lua_gettop (L)) { |
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194 |
node = lm_message_node_get_child (node, luaL_checkstring (L, i)); |
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195 |
if (node == NULL) { |
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lua_pushnil (L); |
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return 1; |
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198 |
} |
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199 |
} |
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bless_lm_node (L, node); |
8 | 201 |
// XXX lm_message_node_unref (child); |
202 |
return 1; |
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203 |
} |
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204 |
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0 | 205 |
/// message_node:pointer |
206 |
/// Returns pointer to underlying C structure. |
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/// R: lightuserdata |
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static int pointer_lm_node (lua_State *L) |
0 | 209 |
{ |
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llm_node_t *object = luaL_checklm_node (L, 1); |
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lua_pushlightuserdata (L, object->node); |
0 | 212 |
return 1; |
213 |
} |
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static int gc_lm_node (lua_State *L) |
0 | 216 |
{ |
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llm_node_t *object = luaL_checklm_node (L, 1); |
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D ("Message node %X gc called", (int) object); |
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219 |
lm_message_node_unref (object->node); |
0 | 220 |
return 0; |
221 |
} |
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222 |
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223 |
static const luaL_Reg reg_f_lm_node[] = { |
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224 |
{ "bless", bless_lua_lm_node }, |
12 | 225 |
{ NULL, NULL }, |
0 | 226 |
}; |
227 |
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228 |
static const luaL_Reg reg_m_lm_node[] = { |
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229 |
{ "name", name_lm_node }, |
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230 |
{ "next", next_lm_node }, |
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231 |
{ "prev", prev_lm_node }, |
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232 |
{ "parent", parent_lm_node }, |
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233 |
{ "value", value_lm_node }, |
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234 |
{ "child", child_lm_node }, |
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235 |
{ "find_child", find_child_lm_node }, |
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diff
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236 |
{ "attribute", attribute_lm_node }, |
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237 |
{ "raw", raw_lm_node }, |
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238 |
{ "xml", xml_lm_node }, |
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239 |
{ "path", path_lm_node }, |
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240 |
{ "pointer", pointer_lm_node }, |
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241 |
{ "__gc", gc_lm_node }, |
12 | 242 |
{ NULL, NULL }, |
0 | 243 |
}; |
244 |
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245 |
int luaopen_lm_message_node (lua_State *L) |
|
246 |
{ |
|
247 |
luaL_newmetatable (L, "loudmouth.message_node"); |
|
248 |
lua_pushstring (L, "__index"); |
|
249 |
lua_pushvalue (L, -2); |
|
250 |
lua_settable (L, -3); |
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251 |
luaL_register (L, NULL, reg_m_lm_node); |
0 | 252 |
lua_pop (L, 1); |
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253 |
lua_newtable (L); // XXX we can specify here exact amount of fields |
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254 |
luaL_register (L, NULL, reg_f_lm_node); |
0 | 255 |
return 1; |
256 |
} |
|
257 |