1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* lua.cc
*
* Thu May 29 16:30:50 CEST 2008
* Copyright 2008 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of Pracro.
*
* Pracro is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Pracro is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Pracro; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "luaresume.h"
#include "luautil.h"
#include "luapraxisd.h"
#include "debug.h"
#include <stdio.h>
#define GLOBAL_POINTER "_pracroGlobalLUAObjectPointerThisShouldBeANameThatIsNotAccidentallyOverwritten"
static int _value(lua_State *L)
{
Pracro::checkParameters(L,
Pracro::T_STRING,
Pracro::T_END);
std::string name = lua_tostring(L, lua_gettop(L));
lua_getglobal(L, GLOBAL_POINTER);
LUAResume *lua = (LUAResume*)lua_touserdata(L, lua_gettop(L));
if(!lua) {
lua_pushstring(L, "No LUA pointer!");
lua_error(L);
return 1;
}
std::string value = lua->value(name);
lua_pushstring(L, value.c_str());
return 1;
}
LUAResume::LUAResume(Commit &c)
: commit(c)
{
L = luaL_newstate();
if(L == NULL) {
ERR(luaresume, "Could not create LUA state.\n");
return;
}
luaL_openlibs(L);
lua_pushlightuserdata(L, this); // Push the pointer to 'this' instance
lua_setglobal(L, GLOBAL_POINTER); // Assign it to a global lua var.
lua_register(L, "value", _value);
register_praxisd(L);
}
LUAResume::~LUAResume()
{
lua_close(L);
}
std::string LUAResume::value(std::string name)
{
if(commit.fields.find(name) == commit.fields.end()) {
ERR(luaresume, "LUAResume: No such field '%s'\n", name.c_str());
return "";
}
return commit.fields[name];
}
std::string LUAResume::run(std::string program)
{
if(L == NULL) {
ERR(luaresume, "LUA state not initialized!");
return "";
}
DEBUG(luaresume, "Running %s\n", program.c_str());
/*
lua_pushstring(L, value.toStdString().c_str());
lua_setglobal(L, "value");
lua_pushstring(L, name.toStdString().c_str());
lua_setglobal(L, "name");
*/
int top = lua_gettop(L);
if(luaL_loadbuffer(L, program.c_str(), program.size(),
"lua resume generator")) {
ERR(luaresume, "loadbufer: %s\n", lua_tostring(L, lua_gettop(L)));
return "";
}
// Run the loaded code
if(lua_pcall(L, 0, LUA_MULTRET, 0)) {
ERR(luaresume, "pcall: %s\n" , lua_tostring(L, lua_gettop(L)));
return "";
}
if(top != lua_gettop(L) - 1) {
ERR(luaresume, "Program did not return a single value.\n");
return "";
}
if(lua_isstring(L, lua_gettop(L)) == false) {
ERR(luaresume, "Program did not return a string value.\n");
return "";
}
std::string res = lua_tostring(L, lua_gettop(L));
lua_pop(L, 1);
return res;
}
void LUAResume::error(std::string message)
{
ERR(luaresume, "LUA ERROR: %s\n", message.c_str());
}
#ifdef TEST_LUARESUME
//deps: debug.cc log.cc luautil.cc
//cflags: -I.. $(LUA_CFLAGS)
//libs: $(LUA_LIBS)
#include <test.h>
TEST_BEGIN;
// TODO: Put some testcode here (see test.h for usable macros).
TEST_TRUE(false, "No tests yet!");
TEST_END;
#endif/*TEST_LUARESUME*/
|
