WebSVN – Kolibri OS – Diff – /programs/system/shell/system/string.c


#include "string.h"
 
void*  memset(void *mem, int c, unsigned size)
{
unsigned i;
 
for ( i = 0; i < size; i++ )
	 *((char *)mem+i) = (char) c;
 
return NULL;	
}
 
 
void* memcpy(void *dst, const void *src, unsigned size)
{
 
unsigned i;
 
for ( i = 0; i < size; i++)
	*(char *)(dst+i) = *(char *)(src+i);
 
return NULL;
}
 
 
int memcmp(const void* buf1, const void* buf2, int count)
{
int i;
for (i=0;i
	{
	if (*(unsigned char*)buf1<*(unsigned char*)buf2)
		return -1;
	if (*(unsigned char*)buf1>*(unsigned char*)buf2)			
		return 1;
	}
return 0;
}
 
void strcat(char strDest[], char strSource[])
{
 
int i, j;
 
i = j = 0;
while (strDest[i] != '\0')
	i++;
 
while ((strDest[i++] = strSource[j++]) != '\0')
             ;
}
 
 
int strcmp(const char* string1, const char* string2)
{
 
while (1)
{
if (*string1<*string2)
	return -1;
if (*string1>*string2)
	return 1;
 
if (*string1=='\0')
	return 0;
 
string1++;
string2++;
}
 
}
 
 
void strcpy(char strDest[], const char strSource[])
{
unsigned i;
 
i = 0;
while ((strDest[i] = strSource[i]) != '\0')
	i++;
 
}
 
 
char* strncpy(char *strDest, const char *strSource, unsigned n)
{
unsigned i;
 
if (! n )
	return strDest;
 
i = 0;
while ((strDest[i] = strSource[i]) != '\0')
	if ( (n-1) == i )
		break;
	else
		i++;
 
return strDest;
}
 
 
int strlen(const char* string)
{
int i;
 
i=0;
while (*string++) i++;
return i;
}
 
 
 
char* strchr(const char* string, int c)
{
	while (*string)
	{
		if (*string==c)
			return (char*)string;
		string++;
	}	
	return (char*)0;
}
 
 
 
void _itoa(int i, char *s)
{
int a, b, c, d;
a = (i - i%1000)/1000;
b = (i - i%100)/100 - a*10;
c = (i - i%10)/10 - a*100 - b*10;
d = i%10;
s[0] = a + '0';
s[1] = b + '0';
s[2] = c + '0';
s[3] = d + '0';
s[4] = 0;
}
 
 
 /* reverse:  ïåðåâîðà÷èâàåì ñòðîêó s íà ìåñòå */
 void reverse(char s[])
 {
     int i, j;
     char c;
 
     for (i = 0, j = strlen(s)-1; i
         c = s[i];
         s[i] = s[j];
         s[j] = c;
     }
 }
 
 
 /* itoa:  êîíâåðòèðóåì n â ñèìâîëû â s */
 void itoa(int n, char s[])
 {
     int i, sign;
 
     if ((sign = n) < 0)
         n = -n;
     i = 0;
     do {
         s[i++] = n % 10 + '0';
     } while ((n /= 10) > 0);
     if (sign < 0)
         s[i++] = '-';
     s[i] = '\0';
     reverse(s);
 }
 
 
 
int _atoi ( char *s )
{
int i, n;
 
n = 0;
for ( i = 0; s[i]!= '\0'; ++i)
	if ((s[i]<'0') || (s[i]>'9'))
		return 0;
	else
		n = 10 * n + s[i] - '0';
 
return n;
}
>
>

Rev 2735	Rev 3245
1	#include "string.h"	1	#include "string.h"
2		2
3	void* memset(void *mem, int c, unsigned size)	3	void* memset(void *mem, int c, unsigned size)
4	{	4	{
5	unsigned i;	5	unsigned i;
6		6
7	for ( i = 0; i < size; i++ )	7	for ( i = 0; i < size; i++ )
8	((char )mem+i) = (char) c;	8	((char )mem+i) = (char) c;
9		9
10	return NULL;	10	return NULL;
11	}	11	}
12		12
13		13
14	void* memcpy(void dst, const void src, unsigned size)	14	void* memcpy(void dst, const void src, unsigned size)
15	{	15	{
16		16
17	unsigned i;	17	unsigned i;
18		18
19	for ( i = 0; i < size; i++)	19	for ( i = 0; i < size; i++)
20	(char )(dst+i) = (char )(src+i);	20	(char )(dst+i) = (char )(src+i);
21		21
22	return NULL;	22	return NULL;
23	}	23	}
24		24
25		25
26	int memcmp(const void* buf1, const void* buf2, int count)	26	int memcmp(const void* buf1, const void* buf2, int count)
27	{	27	{
28	int i;	28	int i;
29	for (i=0;i	29	for (i=0;i
30	{	30	{
31	if ((unsigned char)buf1<(unsigned char)buf2)	31	if ((unsigned char)buf1<(unsigned char)buf2)
32	return -1;	32	return -1;
33	if ((unsigned char)buf1>(unsigned char)buf2)	33	if ((unsigned char)buf1>(unsigned char)buf2)
34	return 1;	34	return 1;
35	}	35	}
36	return 0;	36	return 0;
37	}	37	}
38		38
39	void strcat(char strDest[], char strSource[])	39	void strcat(char strDest[], char strSource[])
40	{	40	{
41		41
42	int i, j;	42	int i, j;
43		43
44	i = j = 0;	44	i = j = 0;
45	while (strDest[i] != '\0')	45	while (strDest[i] != '\0')
46	i++;	46	i++;
47		47
48	while ((strDest[i++] = strSource[j++]) != '\0')	48	while ((strDest[i++] = strSource[j++]) != '\0')
49	;	49	;
50	}	50	}
51		51
52		52
53	int strcmp(const char* string1, const char* string2)	53	int strcmp(const char* string1, const char* string2)
54	{	54	{
55		55
56	while (1)	56	while (1)
57	{	57	{
58	if (string1<string2)	58	if (string1<string2)
59	return -1;	59	return -1;
60	if (string1>string2)	60	if (string1>string2)
61	return 1;	61	return 1;
62		62
63	if (*string1=='\0')	63	if (*string1=='\0')
64	return 0;	64	return 0;
65		65
66	string1++;	66	string1++;
67	string2++;	67	string2++;
68	}	68	}
69		69
70	}	70	}
71		71
72		72
73	void strcpy(char strDest[], const char strSource[])	73	void strcpy(char strDest[], const char strSource[])
74	{	74	{
75	unsigned i;	75	unsigned i;
76		76
77	i = 0;	77	i = 0;
78	while ((strDest[i] = strSource[i]) != '\0')	78	while ((strDest[i] = strSource[i]) != '\0')
79	i++;	79	i++;
80		80
81	}	81	}
82		82
83		83
84	char* strncpy(char strDest, const char strSource, unsigned n)	84	char* strncpy(char strDest, const char strSource, unsigned n)
85	{	85	{
86	unsigned i;	86	unsigned i;
87		87
88	if (! n )	88	if (! n )
89	return strDest;	89	return strDest;
90		90
91	i = 0;	91	i = 0;
92	while ((strDest[i] = strSource[i]) != '\0')	92	while ((strDest[i] = strSource[i]) != '\0')
93	if ( (n-1) == i )	93	if ( (n-1) == i )
94	break;	94	break;
95	else	95	else
96	i++;	96	i++;
97		97
98	return strDest;	98	return strDest;
99	}	99	}
100		100
101		101
102	int strlen(const char* string)	102	int strlen(const char* string)
103	{	103	{
104	int i;	104	int i;
105		105
106	i=0;	106	i=0;
107	while (*string++) i++;	107	while (*string++) i++;
108	return i;	108	return i;
109	}	109	}
110		110
111		111
112		112
113	char* strchr(const char* string, int c)	113	char* strchr(const char* string, int c)
114	{	114	{
115	while (*string)	115	while (*string)
116	{	116	{
117	if (*string==c)	117	if (*string==c)
118	return (char*)string;	118	return (char*)string;
119	string++;	119	string++;
120	}	120	}
121	return (char*)0;	121	return (char*)0;
122	}	122	}
123		123
124		124
125		125
126	void _itoa(int i, char *s)	126	void _itoa(int i, char *s)
127	{	127	{
128	int a, b, c, d;	128	int a, b, c, d;
129	a = (i - i%1000)/1000;	129	a = (i - i%1000)/1000;
130	b = (i - i%100)/100 - a*10;	130	b = (i - i%100)/100 - a*10;
131	c = (i - i%10)/10 - a100 - b10;	131	c = (i - i%10)/10 - a100 - b10;
132	d = i%10;	132	d = i%10;
133	s[0] = a + '0';	133	s[0] = a + '0';
134	s[1] = b + '0';	134	s[1] = b + '0';
135	s[2] = c + '0';	135	s[2] = c + '0';
136	s[3] = d + '0';	136	s[3] = d + '0';
137	s[4] = 0;	137	s[4] = 0;
138	}	138	}
139		139
140		140
141	/* reverse: ïåðåâîðà÷èâàåì ñòðîêó s íà ìåñòå */	141	/* reverse: ïåðåâîðà÷èâàåì ñòðîêó s íà ìåñòå */
142	void reverse(char s[])	142	void reverse(char s[])
143	{	143	{
144	int i, j;	144	int i, j;
145	char c;	145	char c;
146		146
147	for (i = 0, j = strlen(s)-1; i	147	for (i = 0, j = strlen(s)-1; i
148	c = s[i];	148	c = s[i];
149	s[i] = s[j];	149	s[i] = s[j];
150	s[j] = c;	150	s[j] = c;
151	}	151	}
152	}	152	}
153		153
154		154
155	/* itoa: êîíâåðòèðóåì n â ñèìâîëû â s */	155	/* itoa: êîíâåðòèðóåì n â ñèìâîëû â s */
156	void itoa(int n, char s[])	156	void itoa(int n, char s[])
157	{	157	{
158	int i, sign;	158	int i, sign;
159		159
160	if ((sign = n) < 0) /* çàïèñûâàåì çíàê */	160	if ((sign = n) < 0)
161	n = -n; /* äåëàåì n ïîëîæèòåëüíûì ÷èñëîì */	161	n = -n;
162	i = 0;	162	i = 0;
163	do { /* ãåíåðèðóåì öèôðû â îáðàòíîì ïîðÿäêå */	163	do {
164	s[i++] = n % 10 + '0'; /* áåðåì ñëåäóþùóþ öèôðó */	164	s[i++] = n % 10 + '0';
165	} while ((n /= 10) > 0); /* óäàëÿåì */	165	} while ((n /= 10) > 0);
166	if (sign < 0)	166	if (sign < 0)
167	s[i++] = '-';	167	s[i++] = '-';
168	s[i] = '\0';	168	s[i] = '\0';
169	reverse(s);	169	reverse(s);
170	}	170	}
171	>	171
-		172
-		173
-		174	int _atoi ( char *s )
-		175	{
-		176	int i, n;
-		177
-		178	n = 0;
-		179	for ( i = 0; s[i]!= '\0'; ++i)
-		180	if ((s[i]<'0') \|\| (s[i]>'9'))
-		181	return 0;
-		182	else
-		183	n = 10 * n + s[i] - '0';
-		184
-		185	return n;
-		186	}
172	>	187	>
-		188	>

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(root)/programs/system/shell/system/string.c – Rev 2735 → 3245