diff options
Diffstat (limited to 'src/VBox/Runtime/common/time/time.cpp')
| -rw-r--r-- | src/VBox/Runtime/common/time/time.cpp | 164 |
1 files changed, 163 insertions, 1 deletions
diff --git a/src/VBox/Runtime/common/time/time.cpp b/src/VBox/Runtime/common/time/time.cpp index bbeeeb7d..f16911ad 100644 --- a/src/VBox/Runtime/common/time/time.cpp +++ b/src/VBox/Runtime/common/time/time.cpp @@ -4,7 +4,7 @@ */ /* - * Copyright (C) 2006-2007 Oracle Corporation + * Copyright (C) 2006-2012 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; @@ -32,6 +32,7 @@ #include <iprt/time.h> #include "internal/iprt.h" +#include <iprt/ctype.h> #include <iprt/string.h> #include <iprt/assert.h> #include "internal/time.h" @@ -743,3 +744,164 @@ RTDECL(char *) RTTimeSpecToString(PCRTTIMESPEC pTime, char *psz, size_t cb) } RT_EXPORT_SYMBOL(RTTimeSpecToString); + + +/** + * Attempts to convert an ISO date string to a time structure. + * + * We're a little forgiving with zero padding, unspecified parts, and leading + * and trailing spaces. + * + * @retval pTime on success, + * @retval NULL on failure. + * @param pTime Where to store the time on success. + * @param pszString The ISO date string to convert. + */ +RTDECL(PRTTIME) RTTimeFromString(PRTTIME pTime, const char *pszString) +{ + /* Ignore leading spaces. */ + while (RT_C_IS_SPACE(*pszString)) + pszString++; + + /* + * Init non date & time parts. + */ + pTime->fFlags = RTTIME_FLAGS_TYPE_LOCAL; + pTime->offUTC = 0; + + /* + * The day part. + */ + + /* Year */ + int rc = RTStrToInt32Ex(pszString, (char **)&pszString, 10, &pTime->i32Year); + if (rc != VWRN_TRAILING_CHARS) + return NULL; + + bool const fLeapYear = rtTimeIsLeapYear(pTime->i32Year); + if (fLeapYear) + pTime->fFlags |= RTTIME_FLAGS_LEAP_YEAR; + + if (*pszString++ != '-') + return NULL; + + /* Month of the year. */ + rc = RTStrToUInt8Ex(pszString, (char **)&pszString, 10, &pTime->u8Month); + if (rc != VWRN_TRAILING_CHARS) + return NULL; + if (pTime->u8Month == 0 || pTime->u8Month > 12) + return NULL; + if (*pszString++ != '-') + return NULL; + + /* Day of month.*/ + rc = RTStrToUInt8Ex(pszString, (char **)&pszString, 10, &pTime->u8MonthDay); + if (rc != VWRN_TRAILING_CHARS && rc != VINF_SUCCESS) + return NULL; + unsigned const cDaysInMonth = fLeapYear + ? g_acDaysInMonthsLeap[pTime->u8Month - 1] + : g_acDaysInMonthsLeap[pTime->u8Month - 1]; + if (pTime->u8MonthDay == 0 || pTime->u8MonthDay > cDaysInMonth) + return NULL; + + /* Calculate year day. */ + pTime->u16YearDay = pTime->u8MonthDay - 1 + + (fLeapYear + ? g_aiDayOfYearLeap[pTime->u8Month - 1] + : g_aiDayOfYear[pTime->u8Month - 1]); + + /* + * The time part. + */ + if (*pszString++ != 'T') + return NULL; + + /* Hour. */ + rc = RTStrToUInt8Ex(pszString, (char **)&pszString, 10, &pTime->u8Hour); + if (rc != VWRN_TRAILING_CHARS) + return NULL; + if (pTime->u8Hour > 23) + return NULL; + if (*pszString++ != ':') + return NULL; + + /* Minute. */ + rc = RTStrToUInt8Ex(pszString, (char **)&pszString, 10, &pTime->u8Minute); + if (rc != VWRN_TRAILING_CHARS) + return NULL; + if (pTime->u8Minute > 59) + return NULL; + if (*pszString++ != ':') + return NULL; + + /* Second. */ + rc = RTStrToUInt8Ex(pszString, (char **)&pszString, 10, &pTime->u8Minute); + if (rc != VINF_SUCCESS && rc != VWRN_TRAILING_CHARS && rc != VWRN_TRAILING_SPACES) + return NULL; + if (pTime->u8Second > 59) + return NULL; + + /* Nanoseconds is optional and probably non-standard. */ + if (*pszString == '.') + { + rc = RTStrToUInt32Ex(pszString + 1, (char **)&pszString, 10, &pTime->u32Nanosecond); + if (rc != VINF_SUCCESS && rc != VWRN_TRAILING_CHARS && rc != VWRN_TRAILING_SPACES) + return NULL; + if (pTime->u32Nanosecond >= 1000000000) + return NULL; + } + else + pTime->u32Nanosecond = 0; + + /* + * Time zone. + */ + if (*pszString == 'Z') + { + pszString++; + pTime->fFlags &= ~RTTIME_FLAGS_TYPE_MASK; + pTime->fFlags |= ~RTTIME_FLAGS_TYPE_UTC; + pTime->offUTC = 0; + } + else if ( *pszString == '+' + || *pszString == '-') + { + rc = RTStrToInt32Ex(pszString, (char **)&pszString, 10, &pTime->offUTC); + if (rc != VINF_SUCCESS && rc != VWRN_TRAILING_CHARS && rc != VWRN_TRAILING_SPACES) + return NULL; + } + /* else: No time zone given, local with offUTC = 0. */ + + /* + * The rest of the string should be blanks. + */ + char ch; + while ((ch = *pszString++) != '\0') + if (!RT_C_IS_BLANK(ch)) + return NULL; + + return pTime; +} +RT_EXPORT_SYMBOL(RTTimeFromString); + + +/** + * Attempts to convert an ISO date string to a time structure. + * + * We're a little forgiving with zero padding, unspecified parts, and leading + * and trailing spaces. + * + * @retval pTime on success, + * @retval NULL on failure. + * @param pTime The time spec. + * @param pszString The ISO date string to convert. + */ +RTDECL(PRTTIMESPEC) RTTimeSpecFromString(PRTTIMESPEC pTime, const char *pszString) +{ + RTTIME Time; + if (RTTimeFromString(&Time, pszString)) + return RTTimeImplode(pTime, &Time); + return NULL; +} +RT_EXPORT_SYMBOL(RTTimeSpecFromString); + |