/// <summary>Create <see cref="DiffLine"/>.</summary>
/// <param name="state">Line state.</param>
/// <param name="states">Line states.</param>
/// <param name="nums">Line numbers.</param>
/// <param name="text">Line text.</param>
public DiffLine(DiffLineState state, DiffLineState[] states, int[] nums, string text, string ending = LineEnding.Lf)
{
Verify.Argument.IsNotNull(states, "states");
Verify.Argument.IsNotNull(nums, "nums");
_charPositions = -1;
_text = text;
_state = state;
_states = states;
_nums = nums;
_ending = ending;
}
/// <summary>Create <see cref="DiffLine"/>.</summary>
/// <param name="state">Line state.</param>
/// <param name="states">Line states.</param>
/// <param name="nums">Line numbers.</param>
/// <param name="text">Line text.</param>
public DiffLine(DiffLineState state, DiffLineState[] states, int[] nums, string text, string ending = LineEnding.Lf)
{
Verify.Argument.IsNotNull(states, nameof(states));
Verify.Argument.IsNotNull(nums, nameof(nums));
_charPositions = -1;
_text = text;
_state = state;
_states = states;
_nums = nums;
_ending = ending;
}
private Brush GetLineBackgroundBrush(DiffLineState state)
{
switch (state)
{
case DiffLineState.Added:
return(new SolidBrush(Style.Colors.LineAddedBackground));
case DiffLineState.Removed:
return(new SolidBrush(Style.Colors.LineRemovedBackground));
case DiffLineState.Header:
return(new SolidBrush(Style.Colors.LineHeaderBackground));
default:
return(new SolidBrush(Style.Colors.LineContextBackground));
}
}
public void Decrement(DiffLineState state)
{
switch (state)
{
case DiffLineState.Added:
--_addedLinesCount;
break;
case DiffLineState.Removed:
--_removedLinesCount;
break;
case DiffLineState.Context:
--_contextLinesCount;
break;
default:
--_headerLinesCount;
break;
}
}
public void Increment(DiffLineState state)
{
switch(state)
{
case DiffLineState.Added:
++_addedLinesCount;
break;
case DiffLineState.Removed:
++_removedLinesCount;
break;
case DiffLineState.Context:
++_contextLinesCount;
break;
default:
++_headerLinesCount;
break;
}
}
private DiffLine ReadDiffLine(int[] nums)
{
int[] lineNums = (int[])nums.Clone();
int nc = nums.Length;
var states = new DiffLineState[nc];
if (CheckValue(NoNewlineHeader) || CheckValue(HunkHeader))
{
for (int i = 0; i < nc; ++i)
{
states[i] = DiffLineState.Header;
}
return(new DiffLine(DiffLineState.Header, states, lineNums, ReadLine()));
}
var state = DiffLineState.Context;
for (int i = 0; i < nc - 1; ++i)
{
switch (ReadChar())
{
case '-':
state = DiffLineState.Removed;
states[i] = DiffLineState.Removed;
break;
case '+':
state = DiffLineState.Added;
states[i] = DiffLineState.Added;
break;
case ' ':
states[i] = DiffLineState.Context;
break;
default:
states[i] = DiffLineState.Context;
break;
}
}
states[nc - 1] = DiffLineState.Context;
switch (state)
{
case DiffLineState.Context:
for (int i = 0; i < nc; ++i)
{
++nums[i];
}
break;
case DiffLineState.Added:
for (int i = 0; i < nc; ++i)
{
if (states[i] == DiffLineState.Context)
{
++nums[i];
}
}
break;
case DiffLineState.Removed:
for (int i = 0; i < nc - 1; ++i)
{
if (states[i] == DiffLineState.Context)
{
states[i] = DiffLineState.NotPresent;
}
else if (states[i] == DiffLineState.Removed)
{
states[i] = DiffLineState.Context;
++nums[i];
}
}
states[nc - 1] = DiffLineState.Removed;
break;
}
int eol = FindLfLineEnding();
string ending;
if (String[eol - 1] == '\r')
{
--eol;
ending = LineEnding.CrLf;
}
else
{
ending = LineEnding.Lf;
}
var line = ReadStringUpTo(eol, ending.Length);
return(new DiffLine(state, states, lineNums, line, ending));
}
private Brush GetLineForegroundBrush(DiffLineState state)
{
switch(state)
{
case DiffLineState.Added:
return new SolidBrush(Style.Colors.LineAddedForeground);
case DiffLineState.Removed:
return new SolidBrush(Style.Colors.LineRemovedForeground);
case DiffLineState.Header:
return new SolidBrush(Style.Colors.LineHeaderForeground);
default:
return new SolidBrush(Style.Colors.LineContextForeground);
}
}
private DiffLine ReadDiffLine(int[] nums)
{
int[] lineNums = (int[])nums.Clone();
int nc = nums.Length;
var states = new DiffLineState[nc];
if(CheckValue(NoNewlineHeader) || CheckValue(HunkHeader))
{
for(int i = 0; i < nc; ++i)
{
states[i] = DiffLineState.Header;
}
return new DiffLine(DiffLineState.Header, states, lineNums, ReadLine());
}
var state = DiffLineState.Context;
for(int i = 0; i < nc - 1; ++i)
{
switch(ReadChar())
{
case '-':
state = DiffLineState.Removed;
states[i] = DiffLineState.Removed;
break;
case '+':
state = DiffLineState.Added;
states[i] = DiffLineState.Added;
break;
case ' ':
states[i] = DiffLineState.Context;
break;
default:
states[i] = DiffLineState.Context;
break;
}
}
states[nc - 1] = DiffLineState.Context;
switch(state)
{
case DiffLineState.Context:
for(int i = 0; i < nc; ++i)
{
++nums[i];
}
break;
case DiffLineState.Added:
for(int i = 0; i < nc; ++i)
{
if(states[i] == DiffLineState.Context)
{
++nums[i];
}
}
break;
case DiffLineState.Removed:
for(int i = 0; i < nc - 1; ++i)
{
if(states[i] == DiffLineState.Context)
{
states[i] = DiffLineState.NotPresent;
}
else if(states[i] == DiffLineState.Removed)
{
states[i] = DiffLineState.Context;
++nums[i];
}
}
states[nc - 1] = DiffLineState.Removed;
break;
}
int eol = FindLfLineEnding();
string ending;
if(String[eol - 1] == '\r')
{
--eol;
ending = LineEnding.CrLf;
}
else
{
ending = LineEnding.Lf;
}
var line = ReadStringUpTo(eol, ending.Length);
return new DiffLine(state, states, lineNums, line, ending);
}
