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#include "MCWin32.h" // should be included first.
#include "MCRange.h"
#include "MCIndexSet.h"
#include "MCHashMap.h"
#include "MCString.h"
#include "MCUtils.h"
#include "MCArray.h"
#ifndef _MSC_VER
#include <sys/param.h>
#endif
#if defined(ANDROID) || defined(__ANDROID__)
#include "MCAndroid.h"
#endif
using namespace mailcore;
Range mailcore::RangeEmpty = {UINT64_MAX, 0};
Range mailcore::RangeMake(uint64_t location, uint64_t length)
{
Range range;
range.location = location;
range.length = length;
return range;
}
Range mailcore::RangeIntersection(Range range1, Range range2)
{
if (RangeRightBound(range2) < range1.location) {
return RangeEmpty;
}
else if (RangeRightBound(range1) < range2.location) {
return RangeEmpty;
}
else {
uint64_t left1;
uint64_t right1;
uint64_t left2;
uint64_t right2;
uint64_t leftResult;
uint64_t rightResult;
left1 = range1.location;
right1 = RangeRightBound(range1);
left2 = range2.location;
right2 = RangeRightBound(range2);
leftResult = MAX(left1, left2);
rightResult = MIN(right1, right2);
if (rightResult == UINT64_MAX) {
return RangeMake(leftResult, UINT64_MAX);
}
else {
return RangeMake(leftResult, rightResult - leftResult);
}
}
}
bool mailcore::RangeHasIntersection(Range range1, Range range2)
{
return RangeIntersection(range1, range2).location != UINT64_MAX;
}
IndexSet * mailcore::RangeRemoveRange(Range range1, Range range2)
{
uint64_t left1;
uint64_t right1;
uint64_t left2;
uint64_t right2;
IndexSet * result;
if (!RangeHasIntersection(range1, range2))
return IndexSet::indexSetWithRange(range1);
result = IndexSet::indexSet();
range2 = RangeIntersection(range1, range2);
left1 = range1.location;
right1 = RangeRightBound(range1);
left2 = range2.location;
right2 = RangeRightBound(range2);
if (left2 > left1) {
result->addRange(RangeMake(left1, left2 - left1 - 1));
}
if (right2 != UINT64_MAX) {
if (right1 == UINT64_MAX) {
result->addRange(RangeMake(right2 + 1, UINT64_MAX));
}
else {
if (right2 < right1) {
result->addRange(RangeMake(right2 + 1, right1 - (right2 + 1)));
}
}
}
return result;
}
IndexSet * mailcore::RangeUnion(Range range1, Range range2)
{
if (!RangeHasIntersection(range1, range2)) {
IndexSet * result = IndexSet::indexSet();
result->addRange(range1);
result->addRange(range2);
return result;
}
else {
uint64_t left1;
uint64_t right1;
uint64_t left2;
uint64_t right2;
uint64_t resultLeft;
uint64_t resultRight;
left1 = range1.location;
right1 = RangeRightBound(range1);
left2 = range2.location;
right2 = RangeRightBound(range2);
resultLeft = MIN(left1, left2);
resultRight = MAX(right1, right2);
if (resultRight == UINT64_MAX) {
return IndexSet::indexSetWithRange(RangeMake(resultLeft, UINT64_MAX));
}
else {
return IndexSet::indexSetWithRange(RangeMake(resultLeft, resultRight - resultLeft));
}
}
}
uint64_t mailcore::RangeLeftBound(Range range)
{
return range.location;
}
uint64_t mailcore::RangeRightBound(Range range)
{
if (range.length == UINT64_MAX)
return UINT64_MAX;
return range.location + range.length;
}
String * mailcore::RangeToString(Range range)
{
return String::stringWithUTF8Format("%llu-%llu", (unsigned long long) range.location,
(unsigned long long) range.length);
}
Range mailcore::RangeFromString(String * rangeString)
{
Array * components = rangeString->componentsSeparatedByString(MCSTR("-"));
if (components->count() != 2)
return RangeEmpty;
String * locationString = (String *) components->objectAtIndex(0);
String * lengthString = (String *) components->objectAtIndex(1);
return RangeMake(locationString->unsignedLongLongValue(), lengthString->unsignedLongLongValue());
}
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