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Copyright (c) 2007-2009 Gordon Gremme <gremme@zbh.uni-hamburg.de>
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Copyright (c) 2007-2008 Center for Bioinformatics, University of Hamburg
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Permission to use, copy, modify, and distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#include "core/alphabet.h"
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#include "extended/luahelper.h"
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#include "gtlua/alphabet_lua.h"
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static int alphabet_lua_new_protein(lua_State *L)
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alpha = lua_newuserdata(L, sizeof *alpha);
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*alpha = gt_alphabet_new_protein();
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luaL_getmetatable(L, ALPHABET_METATABLE);
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lua_setmetatable(L, -2);
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static int alphabet_lua_new_empty(lua_State *L)
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alpha = lua_newuserdata(L, sizeof *alpha);
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*alpha = gt_alphabet_new_empty();
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luaL_getmetatable(L, ALPHABET_METATABLE);
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lua_setmetatable(L, -2);
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static int alphabet_lua_new_dna(lua_State *L)
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alpha = lua_newuserdata(L, sizeof *alpha);
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*alpha = gt_alphabet_new_dna();
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luaL_getmetatable(L, ALPHABET_METATABLE);
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lua_setmetatable(L, -2);
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static int alphabet_lua_add_mapping(lua_State *L)
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const char *characters;
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alpha = check_alphabet(L, 1);
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characters = luaL_checkstring(L, 2);
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luaL_argcheck(L, strlen(characters), 2,
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"mapping must contain at least one character");
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gt_alphabet_add_mapping(*alpha, characters);
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static int alphabet_lua_add_wildcard(lua_State *L)
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alpha = check_alphabet(L, 1);
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wildcard = luaL_checkstring(L, 2);
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luaL_argcheck(L, strlen(wildcard) == 1, 2,
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"wildcard string must have length 0");
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gt_alphabet_add_wildcard(*alpha, wildcard[0]);
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static int alphabet_lua_decode(lua_State *L)
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alpha = check_alphabet(L, 1);
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code = luaL_checkinteger(L, 2);
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/* XXX: too restrictive, does not consider wildcards */
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luaL_argcheck(L, code < gt_alphabet_size(*alpha), 2, "invalid code");
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character = gt_alphabet_decode(*alpha, code);
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lua_pushlstring(L, &character, 1);
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static int alphabet_lua_size(lua_State *L)
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alpha = check_alphabet(L, 1);
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size = gt_alphabet_size(*alpha);
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lua_pushinteger(L, size);
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static int alphabet_lua_delete(lua_State *L)
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alpha = check_alphabet(L, 1);
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gt_alphabet_delete(*alpha);
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static const struct luaL_Reg alphabet_lib_f [] = {
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{ "alphabet_new_dna", alphabet_lua_new_dna },
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{ "alphabet_new_protein", alphabet_lua_new_protein },
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{ "alphabet_new_empty", alphabet_lua_new_empty },
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static const struct luaL_Reg alphabet_lib_m [] = {
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{ "add_mapping", alphabet_lua_add_mapping },
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{ "add_wildcard", alphabet_lua_add_wildcard },
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{ "decode", alphabet_lua_decode },
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{ "size", alphabet_lua_size },
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int gt_lua_open_alphabet(lua_State *L)
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stack_size = lua_gettop(L);
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luaL_newmetatable(L, ALPHABET_METATABLE);
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/* metatable.__index = metatable */
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lua_pushvalue(L, -1); /* duplicate the metatable */
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lua_setfield(L, -2, "__index");
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/* set its _gc field */
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lua_pushstring(L, "__gc");
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lua_pushcfunction(L, alphabet_lua_delete);
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/* register functions */
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luaL_register(L, NULL, alphabet_lib_m);
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luaL_register(L, "gt", alphabet_lib_f);
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gt_assert(lua_gettop(L) == stack_size);
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void gt_lua_alphabet_push(lua_State *L, GtAlphabet *alpha)
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GtAlphabet **alphaptr;
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gt_assert(L && alpha);
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alphaptr = lua_newuserdata(L, sizeof (*alphaptr));
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luaL_getmetatable(L, ALPHABET_METATABLE);
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lua_setmetatable(L, -2);