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"


/* 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*)malloc ((n+1) * sizeof *result);
    if (!result)
        abort ();

    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;
    int rc = 0;
    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) {
        rc = -1;
        goto leave;     
    }
    memcpy (p, text, nbytes);
    p[nbytes] = '\0';
    
    GlobalUnlock (clipmem);
    SetClipboardData (CF_TEXT, clipmem);
    GlobalFree (clipmem);
    
leave:
    CloseClipboard ();
    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;
}


/* 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	/* Convert the UTF8 string @string into the native charset. */
34	char*
35	utf8_to_native (const char *string)
36	{
37	wchar_t *result;
38	char *native;
39	int n;
40
41	n = MultiByteToWideChar (CP_UTF8, 0, string, -1, NULL, 0);
42	if (n < 0)
43	return NULL;
44
45	result = (wchar_t)malloc ((n+1) sizeof *result);
46	if (!result)
47	abort ();
48
49	n = MultiByteToWideChar (CP_UTF8, 0, string, -1, result, n);
50	if (n < 0) {
51	free (result);
52	return NULL;
53	}
54
55	n = WideCharToMultiByte (GetACP (), 0, result, -1, NULL, 0, NULL, NULL);
56	if (n < 0)
57	return NULL;
58
59	native = (char*)malloc (n+1);
60	if (!native)
61	abort ();
62
63	n = WideCharToMultiByte (GetACP (), 0, result, -1, native, n, NULL, NULL);
64	if (n < 0) {
65	free (result);
66	return NULL;
67	}
68
69	free (result);
70	return native;
71	}
72
73
74	/* Return the clipboard contents as a string or NULL
75	if the clipboard does not contain text. */
76	char*
77	get_clip_text (HWND hwnd)
78	{
79	HANDLE clipmem;
80	char cliptxt, p;
81	int len;
82
83	if (OpenClipboard (hwnd) == FALSE)
84	return NULL;
85	clipmem = GetClipboardData (CF_TEXT);
86	if (clipmem == NULL) {
87	p = NULL;
88	goto leave;
89	}
90	cliptxt = (char *) GlobalLock (clipmem);
91	if (cliptxt == NULL) {
92	p = NULL;
93	goto leave;
94	}
95
96	len = strlen (cliptxt);
97	p = xcalloc (1, len+1);
98	memcpy (p, cliptxt, len);
99	p[len] = '\0';
100	GlobalUnlock (clipmem);
101
102	leave:
103	CloseClipboard ();
104	return p;
105	}
106
107
108	/* Set @text as the new clipboard content. */
109	int
110	set_clip_text (HWND hwnd, const char *text, int nbytes)
111	{
112	HANDLE clipmem;
113	int rc = 0;
114	char *p;
115
116	if (OpenClipboard (hwnd) == FALSE)
117	return -1;
118	EmptyClipboard ();
119
120	clipmem = GlobalAlloc (GHND, nbytes + 1);
121	if (clipmem == NULL)
122	abort ();
123	p = (char *) GlobalLock (clipmem);
124	if (p == NULL) {
125	rc = -1;
126	goto leave;
127	}
128	memcpy (p, text, nbytes);
129	p[nbytes] = '\0';
130
131	GlobalUnlock (clipmem);
132	SetClipboardData (CF_TEXT, clipmem);
133	GlobalFree (clipmem);
134
135	leave:
136	CloseClipboard ();
137	return 0;
138	}
139
140
141	/* Safe wrapper for calloc. */
142	void*
143	xcalloc (size_t n, size_t m)
144	{
145	void *p = calloc (n, m);
146	if (!p)
147	abort ();
148	return p;
149	}
150
151
152	/* Safe wrapper for strdup. */
153	char*
154	xstrdup (const char *s)
155	{
156	char *p = strdup (s);
157	if (!p)
158	abort ();
159	return p;
160	}
161
162
163	/* printf style message box. */
164	void
165	show_error (HWND hwnd, const char caption, UINT type, const char fmt, ...)
166	{
167	char buffer[1024];
168	va_list ptr;
169
170	va_start (ptr, fmt);
171	_vsnprintf (buffer, sizeof (buffer)-1, fmt, ptr);
172	va_end (ptr);
173	MessageBox (hwnd, buffer, caption, type);
174	}