0.4.4/src/misc.c

/*
 *  Copyright (C) 2005-2007  Anders Gavare.  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright  
 *     notice, this list of conditions and the following disclaimer in the 
 *     documentation and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 *  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE   
 *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 *  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 *  OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 *  OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 *  SUCH DAMAGE.
 *
 *
 *  $Id: misc.c,v 1.6 2006/12/30 13:30:52 debug Exp $
 *
 *  This file contains things that don't fit anywhere else, and fake/dummy
 *  implementations of libc functions that are missing on some systems.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>

#include "misc.h"


/*
 *  mystrtoull():
 *
 *  This function is used on OSes that don't have strtoull() in libc.
 */
unsigned long long mystrtoull(const char *s, char **endp, int base)
{
        unsigned long long res = 0;
        int minus_sign = 0;

        if (s == NULL)
                return 0;

        /*  TODO: Implement endp?  */
        if (endp != NULL) {
                fprintf(stderr, "mystrtoull(): endp isn't implemented\n");
                exit(1);
        }

        if (s[0] == '-') {
                minus_sign = 1;
                s++;
        }

        /*  Guess base:  */
        if (base == 0) {
                if (s[0] == '0') {
                        /*  Just "0"? :-)  */
                        if (!s[1])
                                return 0;
                        if (s[1] == 'x' || s[1] == 'X') {
                                base = 16;
                                s += 2;
                        } else {
                                base = 8;
                                s ++;
                        }
                } else if (s[0] >= '1' && s[0] <= '9')
                        base = 10;
        }

        while (s[0]) {
                int c = s[0];
                if (c >= '0' && c <= '9')
                        c -= '0';
                else if (c >= 'a' && c <= 'f')
                        c = c - 'a' + 10;
                else if (c >= 'A' && c <= 'F')
                        c = c - 'A' + 10;
                else
                        break;
                switch (base) {
                case 8: res = (res << 3) | c;
                        break;
                case 16:res = (res << 4) | c;
                        break;
                default:res = (res * base) + c;
                }
                s++;
        }

        if (minus_sign)
                res = (uint64_t) -(int64_t)res;
        return res;
}


/*
 *  mymkstemp():
 *
 *  mkstemp() replacement for systems that lack that function. This is NOT
 *  really safe, but should at least allow the emulator to build and run.
 */
int mymkstemp(char *template)
{
        int h = 0;
        char *p = template;

        while (*p) {
                if (*p == 'X')
                        *p = 48 + random() % 10;
                p++;
        }

        h = open(template, O_RDWR, 0600);
        return h;
}


#ifdef USE_STRLCPY_REPLACEMENTS
/*
 *  mystrlcpy():
 *
 *  Quick hack strlcpy() replacement for systems that lack that function.
 *  NOTE: No length checking is done.
 */
size_t mystrlcpy(char *dst, const char *src, size_t size)
{
        strcpy(dst, src);
        return strlen(src);
}


/*
 *  mystrlcat():
 *
 *  Quick hack strlcat() replacement for systems that lack that function.
 *  NOTE: No length checking is done.
 */
size_t mystrlcat(char *dst, const char *src, size_t size)
{
        size_t orig_dst_len = strlen(dst);
        strcat(dst, src);
        return strlen(src) + orig_dst_len;
}
#endif

1	/*
2	* Copyright (C) 2005-2007 Anders Gavare. All rights reserved.
3	*
4	* Redistribution and use in source and binary forms, with or without
5	* modification, are permitted provided that the following conditions are met:
6	*
7	* 1. Redistributions of source code must retain the above copyright
8	* notice, this list of conditions and the following disclaimer.
9	* 2. Redistributions in binary form must reproduce the above copyright
10	* notice, this list of conditions and the following disclaimer in the
11	* documentation and/or other materials provided with the distribution.
12	* 3. The name of the author may not be used to endorse or promote products
13	* derived from this software without specific prior written permission.
14	*
15	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25	* SUCH DAMAGE.
26	*
27	*
28	* $Id: misc.c,v 1.6 2006/12/30 13:30:52 debug Exp $
29	*
30	* This file contains things that don't fit anywhere else, and fake/dummy
31	* implementations of libc functions that are missing on some systems.
32	*/
33
34	#include <stdio.h>
35	#include <stdlib.h>
36	#include <string.h>
37	#include <fcntl.h>
38
39	#include "misc.h"
40
41
42	/*
43	* mystrtoull():
44	*
45	* This function is used on OSes that don't have strtoull() in libc.
46	*/
47	unsigned long long mystrtoull(const char s, char *endp, int base)
48	{
49	unsigned long long res = 0;
50	int minus_sign = 0;
51
52	if (s == NULL)
53	return 0;
54
55	/* TODO: Implement endp? */
56	if (endp != NULL) {
57	fprintf(stderr, "mystrtoull(): endp isn't implemented\n");
58	exit(1);
59	}
60
61	if (s[0] == '-') {
62	minus_sign = 1;
63	s++;
64	}
65
66	/* Guess base: */
67	if (base == 0) {
68	if (s[0] == '0') {
69	/* Just "0"? :-) */
70	if (!s[1])
71	return 0;
72	if (s[1] == 'x' \|\| s[1] == 'X') {
73	base = 16;
74	s += 2;
75	} else {
76	base = 8;
77	s ++;
78	}
79	} else if (s[0] >= '1' && s[0] <= '9')
80	base = 10;
81	}
82
83	while (s[0]) {
84	int c = s[0];
85	if (c >= '0' && c <= '9')
86	c -= '0';
87	else if (c >= 'a' && c <= 'f')
88	c = c - 'a' + 10;
89	else if (c >= 'A' && c <= 'F')
90	c = c - 'A' + 10;
91	else
92	break;
93	switch (base) {
94	case 8: res = (res << 3) \| c;
95	break;
96	case 16:res = (res << 4) \| c;
97	break;
98	default:res = (res * base) + c;
99	}
100	s++;
101	}
102
103	if (minus_sign)
104	res = (uint64_t) -(int64_t)res;
105	return res;
106	}
107
108
109	/*
110	* mymkstemp():
111	*
112	* mkstemp() replacement for systems that lack that function. This is NOT
113	* really safe, but should at least allow the emulator to build and run.
114	*/
115	int mymkstemp(char *template)
116	{
117	int h = 0;
118	char *p = template;
119
120	while (*p) {
121	if (*p == 'X')
122	*p = 48 + random() % 10;
123	p++;
124	}
125
126	h = open(template, O_RDWR, 0600);
127	return h;
128	}
129
130
131	#ifdef USE_STRLCPY_REPLACEMENTS
132	/*
133	* mystrlcpy():
134	*
135	* Quick hack strlcpy() replacement for systems that lack that function.
136	* NOTE: No length checking is done.
137	*/
138	size_t mystrlcpy(char dst, const char src, size_t size)
139	{
140	strcpy(dst, src);
141	return strlen(src);
142	}
143
144
145	/*
146	* mystrlcat():
147	*
148	* Quick hack strlcat() replacement for systems that lack that function.
149	* NOTE: No length checking is done.
150	*/
151	size_t mystrlcat(char dst, const char src, size_t size)
152	{
153	size_t orig_dst_len = strlen(dst);
154	strcat(dst, src);
155	return strlen(src) + orig_dst_len;
156	}
157	#endif
158