0.4.4.1/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	dpavlin	6	/*
2	dpavlin	34	* Copyright (C) 2005-2007 Anders Gavare. All rights reserved.
3	dpavlin	6	*
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	dpavlin	34	* $Id: misc.c,v 1.6 2006/12/30 13:30:52 debug Exp $
29	dpavlin	24	*
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	dpavlin	6	*/
33
34			#include <stdio.h>
35			#include <stdlib.h>
36	dpavlin	10	#include <string.h>
37	dpavlin	6	#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	dpavlin	10
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