/*
* code found at: http://www.uni-paderborn.de/info/solaris_porting_faq
*/
/*
* Copyright (c) 1994 Powerdog Industries. All rights reserved.
*
* Redistribution and use in source and binary forms, without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgement:
* This product includes software developed by Powerdog Industries.
* 4. The name of Powerdog Industries may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY POWERDOG INDUSTRIES ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE POWERDOG INDUSTRIES BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* A few changes by Steve Dekorte:
* - renamed function and moved En_US into function
*/
#include "Base.h"
#include "PortableStrptime.h"
/*#ifdef IO_NEEDS_STRPTIME*/
#include <time.h>
#include <ctype.h>
#include <locale.h>
#include <string.h>
#define asizeof(a) (sizeof (a) / sizeof ((a)[0]))
/*#ifndef sun*/
struct dtconv {
char *abbrev_month_names[12];
char *month_names[12];
char *abbrev_weekday_names[7];
char *weekday_names[7];
char *time_format;
char *sdate_format;
char *dtime_format;
char *am_string;
char *pm_string;
char *ldate_format;
};
/*#endif*/
#ifdef SUNOS4
extern int strncasecmp();
#endif
#if defined(_MSC_VER) && !defined(__SYMBIAN32__)
#define strcasecmp _stricmp
#define strncasecmp _strnicmp
#endif
int readndigits(char **const buf, const size_t count)
{
int result = 0;
int i;
for (i = 0; i < count; i++, (*buf)++) {
const char digit = **buf;
if (digit == 0 || !isdigit(digit)) {
break;
}
result *= 10;
result += digit - '0';
}
return result;
}
// TODO rename function when I understand what this function does.
void somethingToDoWithSpaces(const char *const buf, char **const ptr)
{
if (*buf != 0 && isspace((int)*buf)) {
while (**ptr != 0 && !isspace((int)**ptr)) {
(*ptr)++;
}
}
}
char *io_strptime(char *buf, char *fmt, struct tm *tm)
{
struct dtconv En_US = {
{ "Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" },
{ "January", "February", "March", "April",
"May", "June", "July", "August",
"September", "October", "November", "December" },
{ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" },
{ "Sunday", "Monday", "Tuesday", "Wednesday",
"Thursday", "Friday", "Saturday" },
"%H:%M:%S",
"%m/%d/%y",
"%a %b %e %T %Z %Y",
"AM",
"PM",
"%A, %B, %e, %Y"
};
char c,
*ptr;
int i,
len;
len = 0;
ptr = fmt;
while (*ptr != 0) {
if (*buf == 0)
break;
c = *ptr++;
if (c != '%') {
if (isspace((int)c))
while (*buf != 0 && isspace((int)*buf))
buf++;
else if (c != *buf++)
return NULL;
continue;
}
c = *ptr++;
switch (c) {
case 0:
return NULL;
case '%':
if (*buf++ != '%')
return NULL;
break;
case 'C':
buf = io_strptime(buf, En_US.ldate_format, tm);
if (buf == 0)
return NULL;
break;
case 'c':
buf = io_strptime(buf, "%x %X", tm);
if (buf == 0)
return NULL;
break;
case 'D':
buf = io_strptime(buf, "%m/%d/%y", tm);
if (buf == 0)
return NULL;
break;
case 'R':
buf = io_strptime(buf, "%H:%M", tm);
if (buf == 0)
return NULL;
break;
case 'r':
buf = io_strptime(buf, "%I:%M:%S %p", tm);
if (buf == 0)
return NULL;
break;
case 'T':
buf = io_strptime(buf, "%H:%M:%S", tm);
if (buf == 0)
return NULL;
break;
case 'X':
buf = io_strptime(buf, En_US.time_format, tm);
if (buf == 0)
return NULL;
break;
case 'x':
buf = io_strptime(buf, En_US.sdate_format, tm);
if (buf == 0)
return NULL;
break;
case 'j':
if (*buf == 0 || isspace((int)*buf))
break;
i = readndigits(&buf, 3);
if (i < 0 || i > 366)
return NULL;
tm->tm_yday = i;
break;
case 'M':
if (*buf == 0 || isspace((int)*buf))
break;
i = readndigits(&buf, 2);
if (i < 0 || i > 59)
return NULL;
tm->tm_min = i;
somethingToDoWithSpaces(buf, &ptr);
break;
case 'S':
if (*buf == 0 || isspace((int)*buf))
break;
i = readndigits(&buf, 2);
if (i < 0 || i > 60) // Earlier 61 was also allowed.
return NULL;
tm->tm_sec = i;
somethingToDoWithSpaces(buf, &ptr);
break;
case 'H':
case 'k':
if (!isdigit((int)*buf))
return NULL;
i = readndigits(&buf, 2);
if (i < 0 || i > 23)
return NULL;
tm->tm_hour = i;
somethingToDoWithSpaces(buf, &ptr);
break;
case 'I':
case 'l':
if (!isdigit((int)*buf))
return NULL;
i = readndigits(&buf, 2);
if (i < 1 || i > 12)
return NULL;
tm->tm_hour = i;
somethingToDoWithSpaces(buf, &ptr);
break;
case 'd':
case 'e':
if (!isdigit((int)*buf))
return NULL;
i = readndigits(&buf, 2);
if (i < 1 || i > 31)
return NULL;
tm->tm_mday = i;
somethingToDoWithSpaces(buf, &ptr);
break;
case 'm':
if (!isdigit((int)*buf))
return NULL;
i = readndigits(&buf, 2);
if (i < 1 || i > 12)
return NULL;
tm->tm_mon = i - 1;
somethingToDoWithSpaces(buf, &ptr);
break;
case 'Y':
if (*buf == 0 || isspace((int)*buf))
break;
if (!isdigit((int)*buf))
return NULL;
i = readndigits(&buf, 4);
if (i < 0 || i > 9999)
return NULL;
tm->tm_year = i - 1900;
somethingToDoWithSpaces(buf, &ptr);
break;
case 'y':
if (*buf == 0 || isspace((int)*buf))
break;
if (!isdigit((int)*buf))
return NULL;
i = readndigits(&buf, 2);
if (i < 0 || i > 99)
return NULL;
tm->tm_year = i;
somethingToDoWithSpaces(buf, &ptr);
break;
case 'P':
case 'p':
len = strlen(En_US.am_string);
if (strncasecmp(buf, En_US.am_string, len) == 0) {
if (tm->tm_hour > 12)
return NULL;
if (tm->tm_hour == 12)
tm->tm_hour = 0;
buf += len;
break;
}
len = strlen(En_US.pm_string);
if (strncasecmp(buf, En_US.pm_string, len) == 0) {
if (tm->tm_hour > 12)
return NULL;
if (tm->tm_hour != 12)
tm->tm_hour += 12;
buf += len;
break;
}
return NULL;
case 'A':
case 'a':
for (i = 0; i < (int)asizeof(En_US.weekday_names); i ++) {
len = strlen(En_US.weekday_names[i]);
if (strncasecmp(buf,
En_US.weekday_names[i],
len) == 0)
break;
len = strlen(En_US.abbrev_weekday_names[i]);
if (strncasecmp(buf,
En_US.abbrev_weekday_names[i],
len) == 0)
break;
}
if (i == asizeof(En_US.weekday_names))
return NULL;
tm->tm_wday = i;
buf += len;
break;
case 'B':
case 'b':
case 'h':
for (i = 0; i < (int)asizeof(En_US.month_names); i ++) {
len = strlen(En_US.month_names[i]);
if (strncasecmp(buf,
En_US.month_names[i],
len) == 0)
break;
len = strlen(En_US.abbrev_month_names[i]);
if (strncasecmp(buf,
En_US.abbrev_month_names[i],
len) == 0)
break;
}
if (i == asizeof(En_US.month_names))
return NULL;
tm->tm_mon = i;
buf += len;
break;
}
}
return buf;
}
/*#endif*/
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