1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/********************************************
memory.c
copyright 1991, 1992 Michael D. Brennan
This is a source file for mawk, an implementation of
the AWK programming language.
Mawk is distributed without warranty under the terms of
the GNU General Public License, version 2, 1991.
********************************************/
/* $Log: memory.c,v $
* Revision 1.2 1993/07/17 13:23:08 mike
* indent and general code cleanup
*
* Revision 1.1.1.1 1993/07/03 18:58:17 mike
* move source to cvs
*
* Revision 5.2 1993/01/01 21:30:48 mike
* split new_STRING() into new_STRING and new_STRING0
*
* Revision 5.1 1991/12/05 07:56:21 brennan
* 1.1 pre-release
*
*/
/* memory.c */
#include "mawk.h"
#include "memory.h"
static STRING *PROTO(xnew_STRING, (unsigned)) ;
STRING null_str =
{0, 1, ""} ;
static STRING *
xnew_STRING(len)
unsigned len ;
{
STRING *sval = (STRING *) zmalloc(len + STRING_OH) ;
sval->len = len ;
sval->ref_cnt = 1 ;
return sval ;
}
/* allocate space for a STRING */
STRING *
new_STRING0(len)
unsigned len ;
{
if (len == 0)
{
null_str.ref_cnt++ ;
return &null_str ;
}
else
{
STRING *sval = xnew_STRING(len) ;
sval->str[len] = 0 ;
return sval ;
}
}
/* convert char* to STRING* */
STRING *
new_STRING(s)
char *s ;
{
if (s[0] == 0)
{
null_str.ref_cnt++ ;
return &null_str ;
}
else
{
STRING *sval = xnew_STRING(strlen(s)) ;
strcpy(sval->str, s) ;
return sval ;
}
}
#ifdef DEBUG
void
DB_free_STRING(sval)
register STRING *sval ;
{
if (--sval->ref_cnt == 0) zfree(sval, sval->len + STRING_OH) ;
}
#endif
|