Mike Lockwood | 56118b5 | 2010-05-11 17:16:59 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Mike Lockwood | 3e6616d | 2010-06-29 18:11:52 -0400 | [diff] [blame] | 17 | #define LOG_TAG "MtpUtils" |
| 18 | |
Mike Lockwood | 5bae7f6 | 2010-05-19 10:33:39 -0400 | [diff] [blame] | 19 | #include <stdio.h> |
Mike Lockwood | 56118b5 | 2010-05-11 17:16:59 -0400 | [diff] [blame] | 20 | #include <time.h> |
| 21 | |
| 22 | #include <cutils/tztime.h> |
| 23 | #include "MtpUtils.h" |
| 24 | |
Mike Lockwood | 8d3257a | 2010-05-14 10:10:36 -0400 | [diff] [blame] | 25 | namespace android { |
| 26 | |
Mike Lockwood | 56118b5 | 2010-05-11 17:16:59 -0400 | [diff] [blame] | 27 | /* |
| 28 | DateTime strings follow a compatible subset of the definition found in ISO 8601, and |
| 29 | take the form of a Unicode string formatted as: "YYYYMMDDThhmmss.s". In this |
| 30 | representation, YYYY shall be replaced by the year, MM replaced by the month (01-12), |
| 31 | DD replaced by the day (01-31), T is a constant character 'T' delimiting time from date, |
| 32 | hh is replaced by the hour (00-23), mm is replaced by the minute (00-59), and ss by the |
| 33 | second (00-59). The ".s" is optional, and represents tenths of a second. |
| 34 | */ |
| 35 | |
| 36 | bool parseDateTime(const char* dateTime, time_t& outSeconds) { |
| 37 | int year, month, day, hour, minute, second; |
| 38 | struct tm tm; |
| 39 | |
| 40 | if (sscanf(dateTime, "%04d%02d%02dT%02d%02d%02d", |
| 41 | &year, &month, &day, &hour, &minute, &second) != 6) |
| 42 | return false; |
| 43 | const char* tail = dateTime + 15; |
| 44 | // skip optional tenth of second |
| 45 | if (tail[0] == '.' && tail[1]) |
| 46 | tail += 2; |
| 47 | //FIXME - support +/-hhmm |
| 48 | bool useUTC = (tail[0] == 'Z'); |
| 49 | |
| 50 | // hack to compute timezone |
| 51 | time_t dummy; |
| 52 | localtime_r(&dummy, &tm); |
| 53 | |
| 54 | tm.tm_sec = second; |
| 55 | tm.tm_min = minute; |
| 56 | tm.tm_hour = hour; |
| 57 | tm.tm_mday = day; |
Mike Lockwood | 2107d23 | 2011-01-26 14:41:45 -0800 | [diff] [blame] | 58 | tm.tm_mon = month - 1; // mktime uses months in 0 - 11 range |
Mike Lockwood | 56118b5 | 2010-05-11 17:16:59 -0400 | [diff] [blame] | 59 | tm.tm_year = year - 1900; |
| 60 | tm.tm_wday = 0; |
| 61 | tm.tm_isdst = -1; |
| 62 | if (useUTC) |
| 63 | outSeconds = mktime(&tm); |
| 64 | else |
| 65 | outSeconds = mktime_tz(&tm, tm.tm_zone); |
| 66 | |
| 67 | return true; |
| 68 | } |
| 69 | |
| 70 | void formatDateTime(time_t seconds, char* buffer, int bufferLength) { |
| 71 | struct tm tm; |
| 72 | |
| 73 | localtime_r(&seconds, &tm); |
| 74 | snprintf(buffer, bufferLength, "%04d%02d%02dT%02d%02d%02d", |
Mike Lockwood | 2107d23 | 2011-01-26 14:41:45 -0800 | [diff] [blame] | 75 | tm.tm_year + 1900, |
| 76 | tm.tm_mon + 1, // localtime_r uses months in 0 - 11 range |
| 77 | tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); |
Mike Lockwood | 56118b5 | 2010-05-11 17:16:59 -0400 | [diff] [blame] | 78 | } |
| 79 | |
Mike Lockwood | 8d3257a | 2010-05-14 10:10:36 -0400 | [diff] [blame] | 80 | } // namespace android |