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#include <string.h>
#include <time.h>
const char*
of_strptime(const char *buffer, const char *format, struct tm *tm)
{
size_t i, j, bufferLength, formatLength;
bufferLength = strlen(buffer);
formatLength = strlen(format);
for (i = j = 0; i < formatLength; i++) {
if (j >= bufferLength)
return NULL;
switch (state) {
case SEARCH_CONVERSION_SPECIFIER:
if (format[i] == '%')
state = IN_CONVERSION_SPECIFIER;
else if (format[i] != buffer[j++])
return NULL;
break;
case IN_CONVERSION_SPECIFIER:;
int k, maxLength, number = 0;
switch (format[i]) {
case 'd':
case 'e':
case 'H':
case 'm':
case 'M':
case 'S':
case 'y':
maxLength = 2;
break;
case 'Y':
maxLength = 4;
break;
case '%':
case 'n':
case 't':
maxLength = 0;
break;
default:
return NULL;
}
if (maxLength > 0 &&
(buffer[j] < '0' || buffer[j] > '9'))
for (k = 0; k < maxLength && j < bufferLength &&
buffer[j] >= '0' && buffer[j] <= '9'; k++, j++) {
number *= 10;
number += buffer[j] - '0';
}
switch (format[i]) {
case 'd':
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#include <string.h>
#include <time.h>
const char*
of_strptime(const char *buffer, const char *format, struct tm *tm)
{
enum {
SEARCH_CONVERSION_SPECIFIER,
IN_CONVERSION_SPECIFIER
} state = SEARCH_CONVERSION_SPECIFIER;
size_t i, j, buffer_len, format_len;
buffer_len = strlen(buffer);
format_len = strlen(format);
for (i = j = 0; i < format_len; i++) {
if (j >= buffer_len)
return NULL;
switch (state) {
case SEARCH_CONVERSION_SPECIFIER:
if (format[i] == '%')
state = IN_CONVERSION_SPECIFIER;
else if (format[i] != buffer[j++])
return NULL;
break;
case IN_CONVERSION_SPECIFIER:;
int k, max_len, number = 0;
switch (format[i]) {
case 'd':
case 'e':
case 'H':
case 'm':
case 'M':
case 'S':
case 'y':
max_len = 2;
break;
case 'Y':
max_len = 4;
break;
case '%':
case 'n':
case 't':
max_len = 0;
break;
default:
return NULL;
}
if (max_len > 0 && (buffer[j] < '0' || buffer[j] > '9'))
return NULL;
for (k = 0; k < max_len && j < buffer_len &&
buffer[j] >= '0' && buffer[j] <= '9'; k++, j++) {
number *= 10;
number += buffer[j] - '0';
}
switch (format[i]) {
case 'd':
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