Differences From Artifact [e62baac3c8]:
- File src/of_strptime.m — part of check-in [e0b9167693] at 2016-02-21 15:37:42 on branch trunk — Make use of C99-style for loops (user: js, size: 2632) [annotate] [blame] [check-ins using]
To Artifact [42f8137e1c]:
- File
src/of_strptime.m
— part of check-in
[e4439b7ef8]
at
2016-09-11 22:03:20
on branch trunk
— OFDate: Add support for parsing time zones
This adds %z for parsing time zones. Additionally, this also adds %a and
%b. (user: js, size: 4919) [annotate] [blame] [check-ins using]
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19 20 21 22 23 24 25 | #include <string.h> #include <time.h> #include "macros.h" const char* | | | | | | | | | | > > > | | | > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 |
#include <string.h>
#include <time.h>
#include "macros.h"
const char*
of_strptime(const char *buffer, const char *format, struct tm *tm, int16_t *tz)
{
enum {
SEARCH_CONVERSION_SPECIFIER,
IN_CONVERSION_SPECIFIER
} state = SEARCH_CONVERSION_SPECIFIER;
size_t j, bufferLen, formatLen;
bufferLen = strlen(buffer);
formatLen = strlen(format);
j = 0;
for (size_t i = 0; i < formatLen; i++) {
if (j >= bufferLen)
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, maxLen, number = 0;
switch (format[i]) {
case 'd':
case 'e':
case 'H':
case 'm':
case 'M':
case 'S':
case 'y':
maxLen = 2;
break;
case 'Y':
maxLen = 4;
break;
case '%':
case 'a':
case 'b':
case 'n':
case 't':
case 'z':
maxLen = 0;
break;
default:
return NULL;
}
if (maxLen > 0 && (buffer[j] < '0' || buffer[j] > '9'))
return NULL;
for (k = 0; k < maxLen && j < bufferLen &&
buffer[j] >= '0' && buffer[j] <= '9'; k++, j++) {
number *= 10;
number += buffer[j] - '0';
}
switch (format[i]) {
case 'a':
if (bufferLen < j + 3)
return NULL;
if (memcmp(buffer + j, "Sun", 3) == 0)
tm->tm_wday = 0;
else if (memcmp(buffer + j, "Mon", 3) == 0)
tm->tm_wday = 1;
else if (memcmp(buffer + j, "Tue", 3) == 0)
tm->tm_wday = 2;
else if (memcmp(buffer + j, "Wed", 3) == 0)
tm->tm_wday = 3;
else if (memcmp(buffer + j, "Thu", 3) == 0)
tm->tm_wday = 4;
else if (memcmp(buffer + j, "Fri", 3) == 0)
tm->tm_wday = 5;
else if (memcmp(buffer + j, "Sat", 3) == 0)
tm->tm_wday = 6;
else
return NULL;
j += 3;
break;
case 'b':
if (bufferLen < j + 3)
return NULL;
if (memcmp(buffer + j, "Jan", 3) == 0)
tm->tm_mon = 1;
else if (memcmp(buffer + j, "Feb", 3) == 0)
tm->tm_mon = 2;
else if (memcmp(buffer + j, "Mar", 3) == 0)
tm->tm_mon = 3;
else if (memcmp(buffer + j, "Apr", 3) == 0)
tm->tm_mon = 4;
else if (memcmp(buffer + j, "May", 3) == 0)
tm->tm_mon = 5;
else if (memcmp(buffer + j, "Jun", 3) == 0)
tm->tm_mon = 6;
else if (memcmp(buffer + j, "Jul", 3) == 0)
tm->tm_mon = 7;
else if (memcmp(buffer + j, "Aug", 3) == 0)
tm->tm_mon = 8;
else if (memcmp(buffer + j, "Sep", 3) == 0)
tm->tm_mon = 9;
else if (memcmp(buffer + j, "Oct", 3) == 0)
tm->tm_mon = 10;
else if (memcmp(buffer + j, "Nov", 3) == 0)
tm->tm_mon = 11;
else if (memcmp(buffer + j, "Dec", 3) == 0)
tm->tm_mon = 12;
else
return NULL;
j += 3;
break;
case 'd':
case 'e':
tm->tm_mday = number;
break;
case 'H':
tm->tm_hour = number;
break;
|
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106 107 108 109 110 111 112 113 114 115 116 117 118 119 | tm->tm_year = number; break; case 'Y': if (number < 1900) return NULL; tm->tm_year = number - 1900; break; case '%': if (buffer[j++] != '%') return NULL; break; case 'n': case 't': | > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 |
tm->tm_year = number;
break;
case 'Y':
if (number < 1900)
return NULL;
tm->tm_year = number - 1900;
break;
case 'z':
if (buffer[j] == '-' || buffer[j] == '+') {
const char *b = buffer + j;
if (bufferLen < j + 5)
return NULL;
if (tz == NULL)
break;
*tz = (((int16_t)b[1] - '0') * 600 +
((int16_t)b[2] - '0') * 60 +
((int16_t)b[3] - '0') * 10 +
((int16_t)b[4] - '0')) *
(b[0] == '-' ? -1 : 1);
j += 5;
} else if (buffer[j] == 'Z') {
if (tz != NULL)
*tz = 0;
j++;
} else if (buffer[j] == 'G') {
if (bufferLen < j + 3)
return NULL;
if (buffer[j + 1] != 'M' ||
buffer[j + 2] != 'T')
return NULL;
if (tz != NULL)
*tz = 0;
j += 3;
} else
return NULL;
break;
case '%':
if (buffer[j++] != '%')
return NULL;
break;
case 'n':
case 't':
|
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