source: vis_dev/glu-2.3/src/util/strsav.c

Last change on this file was 13, checked in by cecile, 15 years ago

library glu 2.3
File size: 2.7 KB
Line 
1/*
2 * Revision Control Information
3 *
4 * $Id: strsav.c,v 1.7 2009/01/05 21:04:04 fabio Exp $
5 *
6 */
7/* LINTLIBRARY */
8
9#include <stdio.h>
10#include "util.h"
11
12
13/*
14 * util_strsav -- save a copy of a string
15 */
16char *
17util_strsav(char const *s)
18{
19 if(s == NIL(char)) { /* added 7/95, for robustness */
20 return NIL(char);
21 }
22 else {
23 return strcpy(ALLOC(char, strlen(s)+1), s);
24 }
25}
26
27/*
28 * util_inttostr -- converts an integer into a string
29 */
30char *
31util_inttostr(int i)
32{
33 unsigned int mod, len;
34 char *s;
35
36 if (i == 0)
37 len = 1;
38 else {
39 if (i < 0) {
40 len = 1;
41 mod = -i;
42 }
43 else {
44 len = 0;
45 mod = i;
46 }
47 len += (unsigned) floor(log10(mod)) + 1;
48 }
49
50 s = ALLOC(char, len + 1);
51 sprintf(s, "%d", i);
52
53 return s;
54}
55
56/*
57 * util_strcat3 -- Creates a new string which is the concatenation of 3
58 * strings. It is the responsibility of the caller to free this string
59 * using FREE.
60 */
61char *
62util_strcat3(
63 char const * str1,
64 char const * str2,
65 char const * str3)
66{
67 char *str = ALLOC(char, strlen(str1) + strlen(str2) + strlen(str3) + 1);
68
69 (void) strcpy(str, str1);
70 (void) strcat(str, str2);
71 (void) strcat(str, str3);
72
73 return (str);
74}
75
76/*
77 * util_strcat4 -- Creates a new string which is the concatenation of 4
78 * strings. It is the responsibility of the caller to free this string
79 * using FREE.
80 */
81char *
82util_strcat4(
83 char const * str1,
84 char const * str2,
85 char const * str3,
86 char const * str4)
87{
88 char *str = ALLOC(char, strlen(str1) + strlen(str2) + strlen(str3) +
89 strlen(str4) + 1);
90
91 (void) strcpy(str, str1);
92 (void) strcat(str, str2);
93 (void) strcat(str, str3);
94 (void) strcat(str, str4);
95
96 return (str);
97}
98
99
100#if !HAVE_STRSTR
101/**Function********************************************************************
102
103 Synopsis [required]
104
105 Description [optional]
106
107 SideEffects [required]
108
109 SeeAlso [optional]
110
111******************************************************************************/
112char *
113strstr(
114 char const * s,
115 char const * pat)
116{
117 int len;
118
119 len = strlen(pat);
120 for (; *s != '\0'; ++s)
121 if (*s == *pat && memcmp(s, pat, len) == 0) {
122 return (char *)s; /* UGH */
123 }
124 return NULL;
125}
126#endif /* !HAVE_STRSTR */
127
128#if !HAVE_STRCHR
129/**Function********************************************************************
130
131 Synopsis [required]
132
133 Description [optional]
134
135 SideEffects [required]
136
137 SeeAlso [optional]
138
139******************************************************************************/
140char *
141strchr(char const * s, int c)
142{
143 for (; *s != '\0'; s++) {
144 if (*s == c) {
145 return (char *)s;
146 }
147 }
148 return NULL;
149
150}
151#endif /* !HAVE_STRCHR */
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