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|---|
| f2ab5a41 |
1 | ################################################################################ |
| 2 | ## |
| d2dacc4f |
3 | ## $Revision: 2 $ |
| f2ab5a41 |
4 | ## $Author: mhx $ |
| d2dacc4f |
5 | ## $Date: 2007/01/02 12:32:28 +0100 $ |
| f2ab5a41 |
6 | ## |
| 7 | ################################################################################ |
| 8 | ## |
| d2dacc4f |
9 | ## Version 3.x, Copyright (C) 2004-2007, Marcus Holland-Moritz. |
| f2ab5a41 |
10 | ## Version 2.x, Copyright (C) 2001, Paul Marquess. |
| 11 | ## Version 1.x, Copyright (C) 1999, Kenneth Albanowski. |
| 12 | ## |
| 13 | ## This program is free software; you can redistribute it and/or |
| 14 | ## modify it under the same terms as Perl itself. |
| 15 | ## |
| 16 | ################################################################################ |
| 17 | |
| 18 | =provides |
| 19 | |
| 20 | my_snprintf |
| 21 | |
| 22 | =implementation |
| 23 | |
| 24 | #if !defined(my_snprintf) |
| 25 | #if { NEED my_snprintf } |
| 26 | |
| 27 | int |
| 28 | my_snprintf(char *buffer, const Size_t len, const char *format, ...) |
| 29 | { |
| 30 | dTHX; |
| 31 | int retval; |
| 32 | va_list ap; |
| 33 | va_start(ap, format); |
| 34 | #ifdef HAS_VSNPRINTF |
| 35 | retval = vsnprintf(buffer, len, format, ap); |
| 36 | #else |
| 37 | retval = vsprintf(buffer, format, ap); |
| 38 | #endif |
| 39 | va_end(ap); |
| 40 | if (retval >= (int)len) |
| 41 | Perl_croak(aTHX_ "panic: my_snprintf buffer overflow"); |
| 42 | return retval; |
| 43 | } |
| 44 | |
| 45 | #endif |
| 46 | #endif |
| 47 | |
| 48 | =xsinit |
| 49 | |
| 50 | #define NEED_my_snprintf |
| 51 | |
| 52 | =xsubs |
| 53 | |
| 54 | void |
| 55 | my_snprintf() |
| 56 | PREINIT: |
| 57 | char buf[128]; |
| 58 | int len; |
| 59 | PPCODE: |
| 60 | len = my_snprintf(buf, sizeof buf, "foo%s%d", "bar", 42); |
| 61 | XPUSHs(newSViv(len)); |
| 62 | XPUSHs(newSVpv(buf, 0)); |
| 63 | XSRETURN(2); |
| 64 | |
| 65 | =tests plan => 2 |
| 66 | |
| 67 | my($l, $s) = Devel::PPPort::my_snprintf(); |
| 68 | ok($l, 8); |
| 69 | ok($s, "foobar42"); |
| 70 | |
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