trunk/src/OEMisc.c

/* OEMisc.c - OE misc functions
 *       Copyright (C) 2006 Timo Schulz
 *
 * This file is part of GPGOE.
 *
 * GPGOE is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 * 
 * GPGOE 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 Lesser General Public License
 * along with GPGOE; if not, write to the Free Software Foundation, 
 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <windows.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>

#include "gpgme.h"
#include "GPGOE.h"


char*
native_to_utf8 (const char *string)
{
    wchar_t *result;
    char *native;
    int n;

    n = MultiByteToWideChar (GetACP (), 0, string, -1, NULL, 0);
    if (n < 0)
        return NULL;

    result = (wchar_t*)xcalloc (1, (n+1) * sizeof *result);

    n = MultiByteToWideChar (GetACP (), 0, string, -1, result, n);
    if (n < 0) {
        free (result);
        return NULL;
    }

    n = WideCharToMultiByte (CP_UTF8, 0, result, -1, NULL, 0, NULL, NULL);
    if (n < 0)
        return NULL;

    native = (char*)xcalloc (1, n+1);

    n = WideCharToMultiByte (CP_UTF8, 0, result, -1, native, n, NULL, NULL);
    if (n < 0) {
        free (result);
        return NULL;
    }

    free (result);
    return native;
}


/* Convert the UTF8 string @string into the native charset. */
char*
utf8_to_native (const char *string)
{
    wchar_t *result;
    char *native;    
    int n;

    n = MultiByteToWideChar (CP_UTF8, 0, string, -1, NULL, 0);
    if (n < 0)
        return NULL;

    result = (wchar_t*)xcalloc (1, (n+1) * sizeof *result);

    n = MultiByteToWideChar (CP_UTF8, 0, string, -1, result, n);
    if (n < 0) {
        free (result);
        return NULL;
    }

    n = WideCharToMultiByte (GetACP (), 0, result, -1, NULL, 0, NULL, NULL);
    if (n < 0)
        return NULL;

    native = (char*)malloc (n+1);
    if (!native)
        abort ();

    n = WideCharToMultiByte (GetACP (), 0, result, -1, native, n, NULL, NULL);
    if (n < 0) {
        free (result);
        return NULL;
    }

    free (result);
    return native;
}


/* Return the clipboard contents as a string or NULL
   if the clipboard does not contain text. */
char*
get_clip_text (HWND hwnd)
{
    HANDLE clipmem;
    char *cliptxt, *p;  
    int len;
    
    if (OpenClipboard (hwnd) == FALSE)
        return NULL;
    clipmem = GetClipboardData (CF_TEXT);
    if (clipmem == NULL) {
        p = NULL;
        goto leave;
    }
    cliptxt = (char *) GlobalLock (clipmem);
    if (cliptxt == NULL) {
        p = NULL;
        goto leave;
    }
    
    len =  strlen (cliptxt);
    p = xcalloc (1, len+1);
    memcpy (p, cliptxt, len);
    p[len] = '\0';
    GlobalUnlock (clipmem);
    
leave:
    CloseClipboard ();
    return p;
}


/* Set @text as the new clipboard content. */
int
set_clip_text (HWND hwnd, const char *text, int nbytes)
{    
    HANDLE clipmem;
    char *p;
    
    if (OpenClipboard (hwnd) == FALSE)  
        return -1;
    EmptyClipboard ();

    clipmem = GlobalAlloc (GHND, nbytes + 1);
    if (clipmem == NULL)
        abort ();
    p = (char *) GlobalLock (clipmem);
    if (p == NULL) {
        CloseClipboard ();
        GlobalFree (clipmem);
        return -1;
    }
    memcpy (p, text, nbytes);
    p[nbytes] = '\0';
    
    SetClipboardData (CF_TEXT, clipmem);
    GlobalUnlock (clipmem);
    CloseClipboard ();
    GlobalFree (clipmem);
    
    return 0;
}


/* Safe wrapper for calloc. */
void*
xcalloc (size_t n, size_t m)
{
    void *p = calloc (n, m);
    if (!p)
        abort ();
    return p;
}


/* Safe wrapper for strdup. */
char*
xstrdup (const char *s)
{
    char *p = strdup (s);
    if (!p)
        abort ();
    return p;
}


void
xfree (void *p)
{
    if (p != NULL)
        free (p);
}


/* printf style message box. */
void
show_error (HWND hwnd, const char *caption, UINT type, const char *fmt, ...)
{
    char buffer[1024];
    va_list ptr;

    va_start (ptr, fmt);
    _vsnprintf (buffer, sizeof (buffer)-1, fmt, ptr);
    va_end (ptr);
    MessageBox (hwnd, buffer, caption, type);
}
1	/* OEMisc.c - OE misc functions
2	* Copyright (C) 2006 Timo Schulz
3	*
4	* This file is part of GPGOE.
5	*
6	* GPGOE is free software; you can redistribute it and/or modify
7	* it under the terms of the GNU Lesser General Public License as published by
8	* the Free Software Foundation; either version 2.1 of the License, or
9	* (at your option) any later version.
10	*
11	* GPGOE is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU Lesser General Public License
17	* along with GPGOE; if not, write to the Free Software Foundation,
18	* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
19	*/
20
21	#ifdef HAVE_CONFIG_H
22	#include <config.h>
23	#endif
24	#include <windows.h>
25	#include <stdio.h>
26	#include <stdarg.h>
27	#include <stdlib.h>
28
29	#include "gpgme.h"
30	#include "GPGOE.h"
31
32
33	char*
34	native_to_utf8 (const char *string)
35	{
36	wchar_t *result;
37	char *native;
38	int n;
39
40	n = MultiByteToWideChar (GetACP (), 0, string, -1, NULL, 0);
41	if (n < 0)
42	return NULL;
43
44	result = (wchar_t)xcalloc (1, (n+1) sizeof *result);
45
46	n = MultiByteToWideChar (GetACP (), 0, string, -1, result, n);
47	if (n < 0) {
48	free (result);
49	return NULL;
50	}
51
52	n = WideCharToMultiByte (CP_UTF8, 0, result, -1, NULL, 0, NULL, NULL);
53	if (n < 0)
54	return NULL;
55
56	native = (char*)xcalloc (1, n+1);
57
58	n = WideCharToMultiByte (CP_UTF8, 0, result, -1, native, n, NULL, NULL);
59	if (n < 0) {
60	free (result);
61	return NULL;
62	}
63
64	free (result);
65	return native;
66	}
67
68
69	/* Convert the UTF8 string @string into the native charset. */
70	char*
71	utf8_to_native (const char *string)
72	{
73	wchar_t *result;
74	char *native;
75	int n;
76
77	n = MultiByteToWideChar (CP_UTF8, 0, string, -1, NULL, 0);
78	if (n < 0)
79	return NULL;
80
81	result = (wchar_t)xcalloc (1, (n+1) sizeof *result);
82
83	n = MultiByteToWideChar (CP_UTF8, 0, string, -1, result, n);
84	if (n < 0) {
85	free (result);
86	return NULL;
87	}
88
89	n = WideCharToMultiByte (GetACP (), 0, result, -1, NULL, 0, NULL, NULL);
90	if (n < 0)
91	return NULL;
92
93	native = (char*)malloc (n+1);
94	if (!native)
95	abort ();
96
97	n = WideCharToMultiByte (GetACP (), 0, result, -1, native, n, NULL, NULL);
98	if (n < 0) {
99	free (result);
100	return NULL;
101	}
102
103	free (result);
104	return native;
105	}
106
107
108	/* Return the clipboard contents as a string or NULL
109	if the clipboard does not contain text. */
110	char*
111	get_clip_text (HWND hwnd)
112	{
113	HANDLE clipmem;
114	char cliptxt, p;
115	int len;
116
117	if (OpenClipboard (hwnd) == FALSE)
118	return NULL;
119	clipmem = GetClipboardData (CF_TEXT);
120	if (clipmem == NULL) {
121	p = NULL;
122	goto leave;
123	}
124	cliptxt = (char *) GlobalLock (clipmem);
125	if (cliptxt == NULL) {
126	p = NULL;
127	goto leave;
128	}
129
130	len = strlen (cliptxt);
131	p = xcalloc (1, len+1);
132	memcpy (p, cliptxt, len);
133	p[len] = '\0';
134	GlobalUnlock (clipmem);
135
136	leave:
137	CloseClipboard ();
138	return p;
139	}
140
141
142	/* Set @text as the new clipboard content. */
143	int
144	set_clip_text (HWND hwnd, const char *text, int nbytes)
145	{
146	HANDLE clipmem;
147	char *p;
148
149	if (OpenClipboard (hwnd) == FALSE)
150	return -1;
151	EmptyClipboard ();
152
153	clipmem = GlobalAlloc (GHND, nbytes + 1);
154	if (clipmem == NULL)
155	abort ();
156	p = (char *) GlobalLock (clipmem);
157	if (p == NULL) {
158	CloseClipboard ();
159	GlobalFree (clipmem);
160	return -1;
161	}
162	memcpy (p, text, nbytes);
163	p[nbytes] = '\0';
164
165	SetClipboardData (CF_TEXT, clipmem);
166	GlobalUnlock (clipmem);
167	CloseClipboard ();
168	GlobalFree (clipmem);
169
170	return 0;
171	}
172
173
174	/* Safe wrapper for calloc. */
175	void*
176	xcalloc (size_t n, size_t m)
177	{
178	void *p = calloc (n, m);
179	if (!p)
180	abort ();
181	return p;
182	}
183
184
185	/* Safe wrapper for strdup. */
186	char*
187	xstrdup (const char *s)
188	{
189	char *p = strdup (s);
190	if (!p)
191	abort ();
192	return p;
193	}
194
195
196	void
197	xfree (void *p)
198	{
199	if (p != NULL)
200	free (p);
201	}
202
203
204	/* printf style message box. */
205	void
206	show_error (HWND hwnd, const char caption, UINT type, const char fmt, ...)
207	{
208	char buffer[1024];
209	va_list ptr;
210
211	va_start (ptr, fmt);
212	_vsnprintf (buffer, sizeof (buffer)-1, fmt, ptr);
213	va_end (ptr);
214	MessageBox (hwnd, buffer, caption, type);
215	}