141 lines
3.0 KiB
C++
141 lines
3.0 KiB
C++
/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2012 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
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see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the License for more information.
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============================================================================*/
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#include "cmTimestamp.h"
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#include <cstring>
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#include <sys/types.h>
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#include <sys/stat.h>
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//----------------------------------------------------------------------------
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std::string cmTimestamp::CurrentTime(
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const std::string& formatString, bool utcFlag)
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{
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time_t currentTimeT = time(0);
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if(currentTimeT == time_t(-1))
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{
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return std::string();
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}
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return CreateTimestampFromTimeT(currentTimeT, formatString, utcFlag);
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}
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//----------------------------------------------------------------------------
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std::string cmTimestamp::FileModificationTime(const char* path,
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const std::string& formatString, bool utcFlag)
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{
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#ifdef _WIN32
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#define STAT _stat
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#else
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#define STAT stat
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#endif
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struct STAT info;
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std::memset(&info, 0, sizeof(info));
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if(STAT(path, &info) != 0)
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{
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return std::string();
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}
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return CreateTimestampFromTimeT(info.st_mtime, formatString, utcFlag);
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}
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//----------------------------------------------------------------------------
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std::string cmTimestamp::CreateTimestampFromTimeT(time_t timeT,
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std::string formatString, bool utcFlag)
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{
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if(formatString.empty())
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{
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formatString = "%Y-%m-%dT%H:%M:%S";
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if(utcFlag)
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{
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formatString += "Z";
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}
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}
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struct tm timeStruct;
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std::memset(&timeStruct, 0, sizeof(timeStruct));
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struct tm* ptr = (struct tm*) 0;
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if(utcFlag)
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{
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ptr = gmtime(&timeT);
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}
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else
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{
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ptr = localtime(&timeT);
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}
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if(ptr == 0)
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{
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return std::string();
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}
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timeStruct = *ptr;
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std::string result;
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for(std::string::size_type i = 0; i < formatString.size(); ++i)
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{
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char c1 = formatString[i];
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char c2 = (i+1 < formatString.size()) ?
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formatString[i+1] : 0;
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if(c1 == '%' && c2 != 0)
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{
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result += AddTimestampComponent(c2, timeStruct);
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++i;
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}
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else
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{
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result += c1;
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}
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}
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return result;
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}
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//----------------------------------------------------------------------------
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std::string cmTimestamp::AddTimestampComponent(
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char flag, struct tm& timeStruct)
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{
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std::string formatString = "%";
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formatString += flag;
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switch(flag)
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{
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case 'd':
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case 'H':
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case 'I':
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case 'j':
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case 'm':
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case 'M':
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case 'S':
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case 'U':
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case 'w':
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case 'y':
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case 'Y':
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break;
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default:
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{
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return formatString;
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}
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}
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char buffer[16];
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size_t size = strftime(buffer, sizeof(buffer),
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formatString.c_str(), &timeStruct);
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return std::string(buffer, size);
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}
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