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/*
* ustring.c: Unicode string routines
*/
#include <wchar.h>
#include <time.h>
#include "halibut.h"
wchar_t *ustrdup(wchar_t * s)
{
wchar_t *r;
if (s)
{
r = mknewa(wchar_t, 1 + ustrlen(s));
ustrcpy(r, s);
} else
{
r = mknew(wchar_t);
*r = 0;
}
return r;
}
char *ustrtoa(wchar_t * s, char *outbuf, int size)
{
char *p;
if (!s)
{
*outbuf = '\0';
return outbuf;
}
for (p = outbuf; *s && p < outbuf + size; p++, s++)
*p = *(char*)s;
if (p < outbuf + size)
*p = '\0';
else
outbuf[size - 1] = '\0';
return outbuf;
}
int ustrlen(wchar_t * s)
{
int len = 0;
while (*s++)
len++;
return len;
}
wchar_t *uadv(wchar_t * s)
{
return s + 1 + ustrlen(s);
}
wchar_t *ustrcpy(wchar_t * dest, wchar_t * source)
{
wchar_t *ret = dest;
do
{
*dest++ = *source;
}
while (*source++);
return ret;
}
int ustrcmp(wchar_t * lhs, wchar_t * rhs)
{
if (!lhs && !rhs)
return 0;
if (!lhs)
return -1;
if (!rhs)
return +1;
while (*lhs && *rhs && *lhs == *rhs)
lhs++, rhs++;
if (*lhs < *rhs)
return -1;
else if (*lhs > *rhs)
return 1;
return 0;
}
wchar_t utolower(wchar_t c)
{
if (c == L'\0')
return c; /* this property needed by ustricmp */
/* FIXME: this doesn't even come close */
if (c >= 'A' && c <= 'Z')
c += 'a' - 'A';
return c;
}
int ustricmp(wchar_t * lhs, wchar_t * rhs)
{
wchar_t lc, rc;
while ((lc = utolower(*lhs)) == (rc = utolower(*rhs)) && lc && rc)
lhs++, rhs++;
if (!lc && !rc)
return 0;
if (lc < rc)
return -1;
else
return 1;
}
wchar_t *ustrlow(wchar_t * s)
{
wchar_t *p = s;
while (*p)
{
*p = utolower(*p);
p++;
}
return s;
}
int utoi(wchar_t * s)
{
int sign = +1;
int n;
if (*s == L'-')
{
s++;
sign = -1;
}
n = 0;
while (*s && *s >= L'0' && *s <= L'9')
{
n *= 10;
n += (*s - '0');
s++;
}
return n;
}
int utob(wchar_t * s)
{
if (!ustricmp(s, L"yes") || !ustricmp(s, L"y") ||
!ustricmp(s, L"true") || !ustricmp(s, L"t"))
return TRUE;
return FALSE;
}
int uisdigit(wchar_t c)
{
return c >= L'0' && c <= L'9';
}
#define USTRFTIME_DELTA 128
wchar_t *ustrftime(wchar_t * wfmt, struct tm * timespec)
{
void *blk = NULL;
wchar_t *wblk, *wp;
char *fmt, *text, *p;
size_t size = 0;
size_t len;
/*
* strftime has the entertaining property that it returns 0
* _either_ on out-of-space _or_ on successful generation of
* the empty string. Hence we must ensure our format can never
* generate the empty string. Somebody throw a custard pie at
* whoever was responsible for that. Please?
*/
if (wfmt)
{
len = ustrlen(wfmt);
fmt = mknewa(char, 2 + len);
ustrtoa(wfmt, fmt + 1, len + 1);
fmt[0] = ' ';
} else
fmt = " %c";
while (1)
{
size += USTRFTIME_DELTA;
blk = resize((char *) blk, size);
len = strftime((char *) blk, size - 1, fmt, timespec);
if (len > 0)
break;
}
/* Note: +1 for the terminating 0, -1 for the initial space in fmt */
wblk = resize((wchar_t *) blk, len);
text = mknewa(char, len);
strftime(text, len, fmt + 1, timespec);
/*
* We operate in the C locale, so this all ought to be kosher
* ASCII. If we ever move outside ASCII machines, we may need
* to make this more portable...
*/
for (wp = wblk, p = text; *p; p++, wp++)
*wp = *p;
*wp = 0;
if (wfmt)
sfree(fmt);
sfree(text);
return wblk;
}
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