summaryrefslogtreecommitdiff
path: root/src/porting.cpp
blob: cce461be8a247a7de8156e856a606eafc71629c9 (plain)
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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
/*
Minetest-c55
Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>

This program 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.

This program 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 this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

/*
	Random portability stuff

	See comments in porting.h
*/

#include "porting.h"
#include "config.h"
#include "debug.h"

namespace porting
{

/*
	Signal handler (grabs Ctrl-C on POSIX systems)
*/

bool g_killed = false;

bool * signal_handler_killstatus(void)
{
	return &g_killed;
}

#if !defined(_WIN32) // POSIX
	#include <signal.h>

void sigint_handler(int sig)
{
	if(g_killed == false)
	{
		dstream<<DTIME<<"INFO: sigint_handler(): "
				<<"Ctrl-C pressed, shutting down."<<std::endl;
		
		dstream<<DTIME<<"INFO: sigint_handler(): "
				<<"Printing debug stacks"<<std::endl;
		debug_stacks_print();

		g_killed = true;
	}
	else
	{
		(void)signal(SIGINT, SIG_DFL);
	}
}

void signal_handler_init(void)
{
	dstream<<"signal_handler_init()"<<std::endl;
	(void)signal(SIGINT, sigint_handler);
}

#else // _WIN32

void signal_handler_init(void)
{
	// No-op
}

#endif

/*
	Path mangler
*/

std::string path_data = "../data";
std::string path_userdata = "../";

void pathRemoveFile(char *path, char delim)
{
	// Remove filename and path delimiter
	int i;
	for(i = strlen(path)-1; i>=0; i--)
	{
		if(path[i] == delim)
			break;
	}
	path[i] = 0;
}

void initializePaths()
{
#ifdef RUN_IN_PLACE
	/*
		Use relative paths if RUN_IN_PLACE
	*/

	dstream<<"Using relative paths (RUN_IN_PLACE)"<<std::endl;

	/*
		Windows
	*/
	#if defined(_WIN32)
		#include <windows.h>

	const DWORD buflen = 1000;
	char buf[buflen];
	DWORD len;
	
	// Find path of executable and set path_data relative to it
	len = GetModuleFileName(GetModuleHandle(NULL), buf, buflen);
	assert(len < buflen);
	pathRemoveFile(buf, '\\');

	// Use "./bin/../data"
	path_data = std::string(buf) + "/../data";
		
	// Use "./bin/../"
	path_userdata = std::string(buf) + "/../";

	/*
		Linux
	*/
	#elif defined(linux)
		#include <unistd.h>
	
	char buf[BUFSIZ];
	memset(buf, 0, BUFSIZ);
	// Get path to executable
	assert(readlink("/proc/self/exe", buf, BUFSIZ-1) != -1);
	
	pathRemoveFile(buf, '/');

	// Use "./bin/../data"
	path_data = std::string(buf) + "/../data";
		
	// Use "./bin/../"
	path_userdata = std::string(buf) + "/../";
	
	/*
		OS X
	*/
	#elif defined(__APPLE__)
	
	//TODO: Get path of executable. This assumes working directory is bin/
	dstream<<"WARNING: Relative path not properly supported on OS X"
			<<std::endl;
	path_data = std::string("../data");
	path_userdata = std::string("../");

	#endif

#else // RUN_IN_PLACE

	/*
		Use platform-specific paths otherwise
	*/

	dstream<<"Using system-wide paths (NOT RUN_IN_PLACE)"<<std::endl;

	/*
		Windows
	*/
	#if defined(_WIN32)
		#include <windows.h>

	const DWORD buflen = 1000;
	char buf[buflen];
	DWORD len;
	
	// Find path of executable and set path_data relative to it
	len = GetModuleFileName(GetModuleHandle(NULL), buf, buflen);
	assert(len < buflen);
	pathRemoveFile(buf, '\\');
	
	// Use "./bin/../data"
	path_data = std::string(buf) + "/../data";
	//path_data = std::string(buf) + "/../share/" + APPNAME;
		
	// Use "C:\Documents and Settings\user\Application Data\<APPNAME>"
	len = GetEnvironmentVariable("APPDATA", buf, buflen);
	assert(len < buflen);
	path_userdata = std::string(buf) + "/" + APPNAME;

	/*
		Linux
	*/
	#elif defined(linux)
		#include <unistd.h>
	
	char buf[BUFSIZ];
	memset(buf, 0, BUFSIZ);
	// Get path to executable
	assert(readlink("/proc/self/exe", buf, BUFSIZ-1) != -1);
	
	pathRemoveFile(buf, '/');

	path_data = std::string(buf) + "/../share/" + APPNAME;
	//path_data = std::string(INSTALL_PREFIX) + "/share/" + APPNAME;
	
	path_userdata = std::string(getenv("HOME")) + "/." + APPNAME;

	/*
		OS X
	*/
	#elif defined(__APPLE__)
		#include <unistd.h>
		#include "CoreFoundation/CoreFoundation.h"

    // Code based on
    // http://stackoverflow.com/questions/516200/relative-paths-not-working-in-xcode-c
    CFBundleRef main_bundle = CFBundleGetMainBundle();
    CFURLRef resources_url = CFBundleCopyResourcesDirectoryURL(main_bundle);
    char path[PATH_MAX];
    if(CFURLGetFileSystemRepresentation(resources_url, TRUE, (UInt8 *)path, PATH_MAX))
	{
		dstream<<"Bundle resource path: "<<path<<std::endl;
		//chdir(path);
		path_data = std::string(path) + "/data";
	}
	else
    {
        // error!
		dstream<<"WARNING: Could not determine bundle resource path"<<std::endl;
    }
    CFRelease(resources_url);
	
	path_userdata = std::string(getenv("HOME")) + "/Library/Application Support/" + APPNAME;
    
	#endif

#endif // RUN_IN_PLACE

	dstream<<"path_data = "<<path_data<<std::endl;
	dstream<<"path_userdata = "<<path_userdata<<std::endl;
}

} //namespace porting