| 1 |
/* |
| 2 |
* Copyright © 2005 Atheme Development Group |
| 3 |
* Rights to this code are documented in doc/pod/license.pod. |
| 4 |
* |
| 5 |
* String functions. |
| 6 |
*/ |
| 7 |
|
| 8 |
static char const rcsid[] = "$Id: string.C,v 1.5 2007-08-30 19:56:26 pippijn Exp $"; |
| 9 |
|
| 10 |
#include "atheme.h" |
| 11 |
#include <common/string.h> |
| 12 |
|
| 13 |
char * |
| 14 |
sstrdup (char const * const s) |
| 15 |
{ |
| 16 |
char *t; |
| 17 |
size_t len; |
| 18 |
|
| 19 |
if (s == NULL) |
| 20 |
return NULL; |
| 21 |
|
| 22 |
t = salloc<char> (len = strlen (s) + 1); |
| 23 |
|
| 24 |
strlcpy (t, s, len); |
| 25 |
return t; |
| 26 |
} |
| 27 |
|
| 28 |
char * |
| 29 |
sstrndup (char const *s, int len) |
| 30 |
{ |
| 31 |
char *t; |
| 32 |
|
| 33 |
if (s == NULL) |
| 34 |
return NULL; |
| 35 |
|
| 36 |
t = salloc<char> (len + 1); |
| 37 |
|
| 38 |
strlcpy (t, s, len); |
| 39 |
return t; |
| 40 |
} |
| 41 |
|
| 42 |
void |
| 43 |
assign (char *dst, char const *src, size_t maxlen) |
| 44 |
{ |
| 45 |
if (!src) |
| 46 |
src = ""; |
| 47 |
|
| 48 |
size_t len = strlen (src); |
| 49 |
|
| 50 |
if (len >= maxlen - 1) |
| 51 |
{ |
| 52 |
if (maxlen <= 4) |
| 53 |
{ |
| 54 |
memset (dst, '.', maxlen - 1); |
| 55 |
dst [maxlen - 1] = 0; |
| 56 |
} |
| 57 |
else |
| 58 |
{ |
| 59 |
memcpy (dst, src, maxlen - 4); |
| 60 |
memcpy (dst + maxlen - 4, "...", 4); |
| 61 |
} |
| 62 |
} |
| 63 |
else |
| 64 |
memcpy (dst, src, len + 1); |
| 65 |
} |
| 66 |
|
| 67 |
#ifndef HAVE_STRLCAT |
| 68 |
/* These functions are taken from Linux. */ |
| 69 |
size_t |
| 70 |
strlcat (char *dest, char const *src, size_t count) |
| 71 |
{ |
| 72 |
size_t dsize = strlen (dest); |
| 73 |
size_t len = strlen (src); |
| 74 |
size_t res = dsize + len; |
| 75 |
|
| 76 |
dest += dsize; |
| 77 |
count -= dsize; |
| 78 |
if (len >= count) |
| 79 |
len = count - 1; |
| 80 |
memcpy (dest, src, len); |
| 81 |
dest[len] = 0; |
| 82 |
return res; |
| 83 |
} |
| 84 |
#endif |
| 85 |
|
| 86 |
#ifndef HAVE_STRLCPY |
| 87 |
size_t |
| 88 |
strlcpy (char *dest, char const *src, size_t size) |
| 89 |
{ |
| 90 |
size_t ret = strlen (src); |
| 91 |
|
| 92 |
if (size) |
| 93 |
{ |
| 94 |
size_t len = (ret >= size) ? size - 1 : ret; |
| 95 |
memcpy (dest, src, len); |
| 96 |
dest[len] = '\0'; |
| 97 |
} |
| 98 |
return ret; |
| 99 |
} |
| 100 |
#endif |
| 101 |
|
| 102 |
/* removes unwanted chars from a line */ |
| 103 |
char const * |
| 104 |
strip (char *line) |
| 105 |
{ |
| 106 |
char *c = 0; |
| 107 |
|
| 108 |
if (line) |
| 109 |
{ |
| 110 |
if ((c = strchr (line, '\n'))) |
| 111 |
*c = '\0'; |
| 112 |
if ((c = strchr (line, '\r'))) |
| 113 |
*c = '\0'; |
| 114 |
if ((c = strchr (line, '\1'))) |
| 115 |
*c = '\0'; |
| 116 |
} |
| 117 |
|
| 118 |
return c; |
| 119 |
} |
| 120 |
|
| 121 |
int |
| 122 |
dynstr::add (char c) |
| 123 |
{ |
| 124 |
if (length - pos <= 1) |
| 125 |
{ |
| 126 |
size_t new_size = std::max (length * 2, pos + 9); |
| 127 |
length = new_size; |
| 128 |
m_rep = new char[new_size]; |
| 129 |
} |
| 130 |
m_rep[pos] = c; |
| 131 |
m_rep[++pos] = '\0'; |
| 132 |
|
| 133 |
return length; |
| 134 |
} |
| 135 |
|
| 136 |
int |
| 137 |
dynstr::add (char const *src, size_t len) |
| 138 |
{ |
| 139 |
if (length - pos <= len) |
| 140 |
{ |
| 141 |
size_t new_size = std::max (length * 2, pos + len + 8); |
| 142 |
length = new_size; |
| 143 |
m_rep = new char[new_size]; |
| 144 |
} |
| 145 |
memcpy (m_rep + pos, src, len); |
| 146 |
pos += len; |
| 147 |
m_rep[pos] = '\0'; |
| 148 |
|
| 149 |
return len; |
| 150 |
} |
