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
102
103
104
105
106
107
|
/* Routines for dealing with '\0' separated arg vectors.
Copyright (C) 1995 Free Software Foundation, Inc.
Written by Miles Bader <miles@gnu.ai.mit.edu>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <stdlib.h>
#include <string.h>
#include <errno.h>
/* ---------------------------------------------------------------- */
/* Make a '\0' separated arg vector from a unix argv vector, returning it in
ARGZ, and the total length in LEN. If a memory allocation error occurs,
ENOMEM is returned, otherwise 0. */
error_t
argz_create(char **argv, char **argz, int *len)
{
int tlen = 0;
char **argp;
for (argp = argv; *argp != NULL; argp++)
tlen += strlen(*argp) + 1;
*len = tlen;
if (tlen == 0)
*argz = NULL;
else
{
*argz = malloc(tlen);
if (*argz == NULL)
return ENOMEM;
while (tlen > 0)
{
tlen -= strlen(*--argp) + 1;
strcpy(*argz + tlen, *argp);
}
}
return 0;
}
/* ---------------------------------------------------------------- */
/* Returns the number of strings in ARGZ. */
int
argz_count (char *argz, int len)
{
int count = 0;
while (len > 0)
{
int part_len = strlen(argz);
argz += part_len + 1;
len -= part_len + 1;
count++;
}
return count;
}
/* ---------------------------------------------------------------- */
/* Puts pointers to each string in ARGZ into ARGV, which must be large enough
to hold them all. */
void
argz_extract (char *argz, int len, char **argv)
{
while (len > 0)
{
int part_len = strlen(argz);
*argv++ = argz;
argz += part_len + 1;
len -= part_len + 1;
}
}
/* ---------------------------------------------------------------- */
/* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
except the last into spaces. */
void
argz_stringify(char *argz, int len)
{
while (len > 0)
{
int part_len = strlen(argz);
argz += part_len;
len -= part_len + 1;
if (len > 0)
*argz++ = ' ';
}
}
|
