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/*
* Worldvisions Weaver Software:
* Copyright (C) 1997-2002 Net Integration Technologies, Inc.
*
* Version number and string manipulations. Version numbers are 32-bit
* hexadecimal numbers such as 0x00012a00. The first 16 bits are the major
* version, and the second 16 bits are the (fractional) minor version. For
* example, the above example corresponds to version "1.2a" (which is the
* version string).
*/
#include "wvverstring.h"
#include <stdio.h>
#include <ctype.h>
#include <string.h>
const char *old_ver_to_string(unsigned int ver)
{
static char str[10];
unsigned int maj = (ver & 0xFFFF0000) >> 16, min = (ver & 0x0000FFFF);
sprintf(str, "%x.%04x", maj, min);
trim_verstr(str);
return str;
}
const char *new_ver_to_string(unsigned int ver)
{
static char str[11];
unsigned int maj = (ver & 0xFF000000) >> 24, min = (ver & 0x00FF0000) >> 16,
rev = (ver & 0x0000FFFF);
sprintf(str, "%x.%02x.%04x", maj, min, rev);
return str;
}
const char *ver_to_string(unsigned int ver)
{
if (is_new_ver(ver))
return new_ver_to_string(ver);
return old_ver_to_string(ver);
}
unsigned int string_to_old_ver(const char *str)
{
static char lookup[] = "0123456789abcdef";
unsigned int maj = 0, min = 0;
unsigned char *cptr, *idx;
int bits;
// do the major number
cptr = (unsigned char *)str;
for (; *cptr && *cptr != '.' && *cptr != '_'; cptr++)
{
idx = (unsigned char *)strchr(lookup, tolower(*cptr));
if (!idx)
continue;
maj = (maj << 4) | ((char *)idx - lookup);
}
// do the minor number
for (bits = 4; *cptr && bits > 0; cptr++)
{
idx = (unsigned char *)strchr(lookup, tolower(*cptr));
if (!idx)
continue;
min = (min << 4) | ((char *)idx - lookup);
bits--;
}
return (maj << 16) | (min << (4*bits));
}
unsigned int string_to_new_ver(const char *str)
{
static char lookup[] = "0123456789abcdef";
unsigned int maj = 0, min = 0, rev = 0, ver;
unsigned char *cptr, *idx;
int bits;
// do the major number
cptr = (unsigned char *)str;
for (; *cptr; cptr++)
{
if (*cptr == '.' || *cptr == '_')
{
cptr++;
break;
}
idx = (unsigned char *)strchr(lookup, tolower(*cptr));
if (!idx)
continue;
maj = (maj << 4) | ((char *)idx - lookup);
}
// do the minor number
for (bits = 2; *cptr && *cptr != '.' && *cptr != '_' && bits > 0; cptr++)
{
idx = (unsigned char *)strchr(lookup, tolower(*cptr));
if (!idx)
continue;
min = (min << 4) | ((char *)idx - lookup);
bits--;
}
// do the revision number
for (bits = 4; *cptr && bits > 0; cptr++)
{
idx = (unsigned char *)strchr(lookup, tolower(*cptr));
if (!idx)
continue;
rev = (rev << 4) | ((char *)idx - lookup);
bits--;
}
ver = (maj << 24) | (min << 16) | (rev << (4*bits));
return ver;
}
unsigned int string_to_ver(const char *str)
{
if (is_new_verstr(str))
return string_to_new_ver(str);
return string_to_old_ver(str);
}
bool is_new_ver(unsigned int ver)
{
return (ver & 0xff000000);
}
bool is_new_verstr(const char *str)
{
const char *p = strchr(str, '.');
if (p && strchr(p+1, '.'))
return true;
return false;
}
char *trim_verstr(char *verstr)
{
// trim off trailing zeroes
char *cptr;
for (cptr = strchr(verstr, 0); --cptr >= verstr; )
{
if (*cptr != '0')
break;
if (cptr <= verstr || *(cptr - 1) == '.')
break;
*cptr = 0;
}
return verstr;
}
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