diff options
Diffstat (limited to 'src/database_backend.nobj.lua')
| -rw-r--r-- | src/database_backend.nobj.lua | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/src/database_backend.nobj.lua b/src/database_backend.nobj.lua deleted file mode 100644 index 57c83c3..0000000 --- a/src/database_backend.nobj.lua +++ /dev/null @@ -1,198 +0,0 @@ --- Copyright (c) 2010 by Robert G. Jakabosky <bobby@sharedrealm.com> --- --- Permission is hereby granted, free of charge, to any person obtaining a copy --- of this software and associated documentation files (the "Software"), to deal --- in the Software without restriction, including without limitation the rights --- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell --- copies of the Software, and to permit persons to whom the Software is --- furnished to do so, subject to the following conditions: --- --- The above copyright notice and this permission notice shall be included in --- all copies or substantial portions of the Software. --- --- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR --- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, --- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE --- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER --- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, --- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN --- THE SOFTWARE. - -object "DatabaseBackend" { - c_source [[ -//typedef struct RawObject RawObject; -#include <git2/odb_backend.h> - -typedef struct DatabaseBackend { - git_odb_backend backend; - lua_State *L; - int read; - int read_header; - int write; - int exists; - int free; - int ref_count; -} DatabaseBackend; - -static void DatabaseBackend_ref(DatabaseBackend *backend) { - backend->ref_count++; -} - -static void DatabaseBackend_unref(DatabaseBackend *backend) { - lua_State *L = backend->L; - if((--backend->ref_count) == 0) { - luaL_unref(L, LUA_REGISTRYINDEX, backend->read); - luaL_unref(L, LUA_REGISTRYINDEX, backend->read_header); - luaL_unref(L, LUA_REGISTRYINDEX, backend->write); - luaL_unref(L, LUA_REGISTRYINDEX, backend->exists); - luaL_unref(L, LUA_REGISTRYINDEX, backend->free); - free(backend); - } -} - -static int database_backend_read_cb(git_rawobj *obj, git_odb_backend *backend, const git_oid *oid) -{ - DatabaseBackend *lua_backend = (DatabaseBackend *)backend; - lua_State *L = lua_backend->L; - int err; - - /* get Lua callback function. */ - lua_rawgeti(L, LUA_REGISTRYINDEX, lua_backend->read); - - obj_type_OID_push(L, *((OID *)oid), 0); - /* call Lua function. */ - lua_call(L, 1, 2); - err = lua_tointeger(L, -1); - if(err == 0) { - RawObject *raw_obj = obj_type_RawObject_check(L,-2); - /* copy header fields. */ - obj->len = raw_obj->git.len; - obj->type = raw_obj->git.type; - /* we must malloc & copy the RawObject's data. */ - if(raw_obj->git.data) { - obj->data = malloc(obj->len); - if(obj->data == NULL) { - /* failed to allocate buffer. */ - return GIT_ENOMEM; - } - /* copy data. */ - memcpy(obj->data, raw_obj->git.data, obj->len); - } else { - obj->data = NULL; - } - } - - return err; -} - -static int database_backend_read_header_cb(git_rawobj *obj, git_odb_backend *backend, const git_oid *oid) -{ - DatabaseBackend *lua_backend = (DatabaseBackend *)backend; - lua_State *L = lua_backend->L; - int err; - - /* get Lua callback function. */ - lua_rawgeti(L, LUA_REGISTRYINDEX, lua_backend->read_header); - - obj_type_OID_push(L, *((OID *)oid), 0); - /* call Lua function. */ - lua_call(L, 1, 2); - err = lua_tointeger(L, -1); - if(err == 0) { - RawObject *raw_obj = obj_type_RawObject_check(L,-2); - /* copy only header fields. */ - obj->data = NULL; - obj->len = raw_obj->git.len; - obj->type = raw_obj->git.type; - } - - return err; -} - -static int database_backend_write_cb(git_oid *oid, git_odb_backend *backend, git_rawobj *obj) -{ - DatabaseBackend *lua_backend = (DatabaseBackend *)backend; - lua_State *L = lua_backend->L; - RawObject raw; - int err; - - /* get Lua callback function. */ - lua_rawgeti(L, LUA_REGISTRYINDEX, lua_backend->write); - - /* convert git_rawobj to RawObject */ - RawObject_from_git_rawobj(L, &raw, obj, 0); - /* push RawObject onto stack. */ - obj_type_RawObject_push(L, &raw, 0); - - /* call Lua function. */ - lua_call(L, 1, 2); - err = lua_tointeger(L, -1); - if(err == 0) { - *oid = obj_type_OID_check(L,-2); - } - - return err; -} - -static int database_backend_exists_cb(git_odb_backend *backend, const git_oid *oid) -{ - DatabaseBackend *lua_backend = (DatabaseBackend *)backend; - lua_State *L = lua_backend->L; - - /* get Lua callback function. */ - lua_rawgeti(L, LUA_REGISTRYINDEX, lua_backend->exists); - - obj_type_OID_push(L, *((OID *)oid), 0); - /* call Lua function. */ - lua_call(L, 1, 1); - return lua_tointeger(L, -1); -} - -static void database_backend_free_cb(git_odb_backend *backend) -{ - DatabaseBackend *lua_backend = (DatabaseBackend *)backend; - lua_State *L = lua_backend->L; - - /* get Lua callback function. */ - lua_rawgeti(L, LUA_REGISTRYINDEX, lua_backend->free); - - /* call Lua function. */ - lua_call(L, 0, 0); - - DatabaseBackend_unref(lua_backend); -} - -]], - constructor { - var_in{"lua_State *", "L"}, - c_source [[ - int idx; - int ref; - - luaL_checktype(L, 1, LUA_TTABLE); - lua_settop(L, 1); - /* create backend object. */ - ${this} = calloc(1, sizeof(DatabaseBackend)); - ${this}->ref_count = 1; - ${this}->L = L; - /* get each callback from table. */ -#define REF_CB(_name) \ - lua_getfield(L, 1, "on_" #_name); \ - ${this}->_name = luaL_ref(L, LUA_REGISTRYINDEX); \ - ${this}->backend._name = database_backend_ ## _name ## _cb; - - REF_CB(read) - REF_CB(read_header) - REF_CB(write) - REF_CB(exists) - REF_CB(free) -#undef REF_CB -]] - }, - destructor { - c_source [[ - DatabaseBackend_unref(${this}); -]] - }, -} - |