You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
65 lines
1.6 KiB
65 lines
1.6 KiB
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
|
|
file Copyright.txt or https://cmake.org/licensing for details. */
|
|
#include "cmFileTimeCache.h"
|
|
|
|
#include <string>
|
|
#include <unordered_map>
|
|
#include <utility>
|
|
|
|
cmFileTimeCache::cmFileTimeCache() = default;
|
|
|
|
cmFileTimeCache::~cmFileTimeCache() = default;
|
|
|
|
bool cmFileTimeCache::Load(std::string const& fileName, cmFileTime& fileTime)
|
|
{
|
|
// Use the stored time if available.
|
|
{
|
|
auto fit = this->Cache.find(fileName);
|
|
if (fit != this->Cache.end()) {
|
|
fileTime = fit->second;
|
|
return true;
|
|
}
|
|
}
|
|
// Read file time from OS
|
|
if (!fileTime.Load(fileName)) {
|
|
return false;
|
|
}
|
|
// Store file time in cache
|
|
this->Cache[fileName] = fileTime;
|
|
return true;
|
|
}
|
|
|
|
bool cmFileTimeCache::Remove(std::string const& fileName)
|
|
{
|
|
return (this->Cache.erase(fileName) != 0);
|
|
}
|
|
|
|
bool cmFileTimeCache::Compare(std::string const& f1, std::string const& f2,
|
|
int* result)
|
|
{
|
|
// Get the modification time for each file.
|
|
cmFileTime ft1;
|
|
cmFileTime ft2;
|
|
if (this->Load(f1, ft1) && this->Load(f2, ft2)) {
|
|
// Compare the two modification times.
|
|
*result = ft1.Compare(ft2);
|
|
return true;
|
|
}
|
|
// No comparison available. Default to the same time.
|
|
*result = 0;
|
|
return false;
|
|
}
|
|
|
|
bool cmFileTimeCache::DifferS(std::string const& f1, std::string const& f2)
|
|
{
|
|
// Get the modification time for each file.
|
|
cmFileTime ft1;
|
|
cmFileTime ft2;
|
|
if (this->Load(f1, ft1) && this->Load(f2, ft2)) {
|
|
// Compare the two modification times.
|
|
return ft1.DifferS(ft2);
|
|
}
|
|
// No comparison available. Default to different times.
|
|
return true;
|
|
}
|