dinfo/dinfo.xs

#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

MODULE = dinfo          PACKAGE = dinfo

PROTOTYPES: ENABLE

void
nummer2str (char *nummer, int fill = 10)
        PPCODE:
        int len;
        unsigned long long num;
        char bin[5];

        for (len = num = 0; *nummer && len < 11; nummer++)
          if (*nummer >= '0' && *nummer <= '9')
            {
              len++;
              num = num * 11 + *nummer - '0';
            }

        while (len++ < 11)
          num = num * 11 + fill;

        bin[0] =               num >> 32;
        bin[1] = (unsigned int)num >> 24;
        bin[2] = (unsigned int)num >> 16;
        bin[3] = (unsigned int)num >>  8;
        bin[4] = (unsigned int)num >>  0;

        len = 5;
        while (--len && bin[len] == ' ')
           bin[len] = '0';

        XPUSHs (sv_2mortal (newSVpvn (bin, len + 1)));
        
SV *
str2nummer (SV *str)
        CODE:
        STRLEN len;
        int i;
        unsigned char *bin = (unsigned char *)SvPV (str, len);
        char nummer[12];
        unsigned long long num;

        num = (((unsigned long long)(len > 0 ? bin[0] : ' ')) << 32)
            | (((unsigned long long)(len > 1 ? bin[1] : ' ')) << 24)
            | (((unsigned long long)(len > 2 ? bin[2] : ' ')) << 16)
            | (((unsigned long long)(len > 3 ? bin[3] : ' ')) <<  8)
            | (((unsigned long long)(len > 4 ? bin[4] : ' ')) <<  0);

        nummer[11] = 0;
        for (len = 11, i = 11; i--; )
          {
            nummer[i] = "0123456789"[num % 11];
            num /= 11;
          }

        RETVAL = newSVpv (nummer, 0);
        OUTPUT:
        RETVAL
Revision:	1.4
Committed:	Wed Sep 3 23:45:19 2003 UTC (20 years, 8 months ago) by root
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.3:	+5 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	#include "EXTERN.h"
2			#include "perl.h"
3			#include "XSUB.h"
4
5			MODULE = dinfo PACKAGE = dinfo
6
7			PROTOTYPES: ENABLE
8
9			void
10	root	1.2	nummer2str (char *nummer, int fill = 10)
11	root	1.1	PPCODE:
12			int len;
13			unsigned long long num;
14			char bin[5];
15
16			for (len = num = 0; *nummer && len < 11; nummer++)
17			if (nummer >= '0' && nummer <= '9')
18			{
19			len++;
20			num = num * 11 + *nummer - '0';
21			}
22
23			while (len++ < 11)
24			num = num * 11 + fill;
25
26			bin[0] = num >> 32;
27			bin[1] = (unsigned int)num >> 24;
28			bin[2] = (unsigned int)num >> 16;
29			bin[3] = (unsigned int)num >> 8;
30			bin[4] = (unsigned int)num >> 0;
31
32	root	1.4	len = 5;
33			while (--len && bin[len] == ' ')
34			bin[len] = '0';
35
36			XPUSHs (sv_2mortal (newSVpvn (bin, len + 1)));
37	root	1.1
38	root	1.3	SV *
39			str2nummer (SV *str)
40			CODE:
41			STRLEN len;
42			int i;
43			unsigned char bin = (unsigned char )SvPV (str, len);
44			char nummer[12];
45			unsigned long long num;
46
47			num = (((unsigned long long)(len > 0 ? bin[0] : ' ')) << 32)
48			\| (((unsigned long long)(len > 1 ? bin[1] : ' ')) << 24)
49			\| (((unsigned long long)(len > 2 ? bin[2] : ' ')) << 16)
50			\| (((unsigned long long)(len > 3 ? bin[3] : ' ')) << 8)
51			\| (((unsigned long long)(len > 4 ? bin[4] : ' ')) << 0);
52
53			nummer[11] = 0;
54			for (len = 11, i = 11; i--; )
55			{
56			nummer[i] = "0123456789"[num % 11];
57			num /= 11;
58			}
59
60			RETVAL = newSVpv (nummer, 0);
61			OUTPUT:
62			RETVAL