summaryrefslogtreecommitdiffstatshomepage
path: root/src/lib/netlist/plib/pdynlib.cpp
blob: 0d32bead51dcc545e95443e27ea506ee06369e5b (plain) (blame)
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
// license:GPL-2.0+
// copyright-holders:Couriersud
/*
 * dynlib.c
 *
 */

#include "pdynlib.h"

#ifdef _WIN32
#include "windows.h"
#include "palloc.h"

namespace plib {
CHAR *astring_from_utf8(const char *utf8string)
{
	WCHAR *wstring;
	int char_count;
	CHAR *result;

	// convert MAME string (UTF-8) to UTF-16
	char_count = MultiByteToWideChar(CP_UTF8, 0, utf8string, -1, nullptr, 0);
	wstring = (WCHAR *)alloca(char_count * sizeof(*wstring));
	MultiByteToWideChar(CP_UTF8, 0, utf8string, -1, wstring, char_count);

	// convert UTF-16 to "ANSI code page" string
	char_count = WideCharToMultiByte(CP_ACP, 0, wstring, -1, nullptr, 0, nullptr, nullptr);
	result = new CHAR[char_count];
	if (result != nullptr)
		WideCharToMultiByte(CP_ACP, 0, wstring, -1, result, char_count, nullptr, nullptr);

	return result;
}

WCHAR *wstring_from_utf8(const char *utf8string)
{
	int char_count;
	WCHAR *result;

	// convert MAME string (UTF-8) to UTF-16
	char_count = MultiByteToWideChar(CP_UTF8, 0, utf8string, -1, nullptr, 0);
	result = new WCHAR[char_count];
	if (result != nullptr)
		MultiByteToWideChar(CP_UTF8, 0, utf8string, -1, result, char_count);

	return result;
}
}

#ifdef UNICODE
#define tstring_from_utf8   plib::wstring_from_utf8
#else // !UNICODE
#define tstring_from_utf8   plib::astring_from_utf8
#endif // UNICODE

#else
#include <dlfcn.h>
#endif

namespace plib {
dynlib::dynlib(const pstring &libname)
: m_isLoaded(false), m_lib(nullptr)
{
#ifdef _WIN32
	//fprintf(stderr, "win: loading <%s>\n", libname.c_str());
	TCHAR *buffer = tstring_from_utf8(libname.c_str());
	if (libname != "")
		m_lib = LoadLibrary(buffer);
	else
		m_lib = GetModuleHandle(nullptr);
	if (m_lib != nullptr)
		m_isLoaded = true;
	//else
	//  fprintf(stderr, "win: library <%s> not found!\n", libname.c_str());
	delete [] buffer;
#elif defined(EMSCRIPTEN)
	//no-op
#else
	//printf("loading <%s>\n", libname.c_str());
	if (libname != "")
		m_lib = dlopen(libname.c_str(), RTLD_LAZY);
	else
		m_lib = dlopen(nullptr, RTLD_LAZY);
	if (m_lib != nullptr)
		m_isLoaded = true;
	//else
	//  printf("library <%s> not found: %s\n", libname.c_str(), dlerror());
#endif
	}

dynlib::dynlib(const pstring &path, const pstring &libname)
: m_isLoaded(false), m_lib(nullptr)
{
	// FIXME: implement path search
	plib::unused_var(path);
	//  printf("win: loading <%s>\n", libname.c_str());
#ifdef _WIN32
	TCHAR *buffer = tstring_from_utf8(libname.c_str());
	if (libname != "")
		m_lib = LoadLibrary(buffer);
	else
		m_lib = GetModuleHandle(nullptr);
	if (m_lib != nullptr)
		m_isLoaded = true;
	else
	{
		//printf("win: library <%s> not found!\n", libname.c_str());
	}
	delete [] buffer;
#elif defined(EMSCRIPTEN)
	//no-op
#else
	//printf("loading <%s>\n", libname.c_str());
	if (libname != "")
		m_lib = dlopen(libname.c_str(), RTLD_LAZY);
	else
		m_lib = dlopen(nullptr, RTLD_LAZY);
	if (m_lib != nullptr)
		m_isLoaded = true;
	else
	{
		//printf("library <%s> not found!\n", libname.c_str());
	}
#endif
}

dynlib::~dynlib()
{
	if (m_lib != nullptr)
	{
#ifdef _WIN32
#else
		dlclose(m_lib);
		//printf("Closed %s\n", dlerror());
#endif
	}
}

bool dynlib::isLoaded() const
{
	return m_isLoaded;
}

void *dynlib::getsym_p(const pstring &name)
{
#ifdef _WIN32
	return (void *) GetProcAddress((HMODULE) m_lib, name.c_str());
#else
	return dlsym(m_lib, name.c_str());
#endif
}

} // namespace plib