Annotation of rpl/src/asprintf.c, revision 1.4
1.1 bertrand 1: /*
2: ================================================================================
1.4 ! bertrand 3: RPL/2 (R) version 4.0.11
1.3 bertrand 4: Copyright (C) 1989-2010 Dr. BERTRAND Joël
1.1 bertrand 5:
6: This file is part of RPL/2.
7:
8: RPL/2 is free software; you can redistribute it and/or modify it
9: under the terms of the CeCILL V2 License as published by the french
10: CEA, CNRS and INRIA.
11:
12: RPL/2 is distributed in the hope that it will be useful, but WITHOUT
13: ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14: FITNESS FOR A PARTICULAR PURPOSE. See the CeCILL V2 License
15: for more details.
16:
17: You should have received a copy of the CeCILL License
18: along with RPL/2. If not, write to info@cecill.info.
19: ================================================================================
20: */
21:
22:
1.2 bertrand 23: #include "rpl.h"
1.1 bertrand 24: #include <stdarg.h>
1.2 bertrand 25:
1.1 bertrand 26:
27: int
1.2 bertrand 28: valsprintf(unsigned char **strp, const char *fmt, va_list ap)
1.1 bertrand 29: {
1.3 bertrand 30: size_t bs;
31: size_t s;
32: unsigned char *b = NULL;
1.1 bertrand 33:
1.3 bertrand 34: for(bs = 1024;; bs *= 2)
1.1 bertrand 35: {
1.3 bertrand 36: if (b != NULL)
37: {
38: free(b);
39: }
40:
41: if ((b = malloc(sizeof(*b) * bs)) == NULL)
42: {
43: return -1;
44: }
45:
46: if (((int) (s = vsnprintf(b, bs, fmt, ap))) < 0)
47: {
48: free(b);
49: return -1;
50: }
51:
52: if (s < bs)
53: {
54: break;
55: }
1.1 bertrand 56: }
57:
1.3 bertrand 58: if (((*strp) = realloc(b, ((s = strlen(b)) + 1) * sizeof(*b))) == NULL)
1.1 bertrand 59: {
60: free(b);
61: return -1;
62: }
63:
1.3 bertrand 64: return s;
1.1 bertrand 65: }
66:
67:
68: int
1.2 bertrand 69: alsprintf(unsigned char **strp, const char *fmt, ...)
1.1 bertrand 70: {
1.3 bertrand 71: int done;
72: va_list arg;
1.1 bertrand 73:
1.3 bertrand 74: va_start(arg, fmt);
75: done = valsprintf(strp, fmt, arg);
76: va_end(arg);
1.1 bertrand 77:
1.3 bertrand 78: return(done);
1.1 bertrand 79: }
80:
81: // vim: ts=4
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