public void TextNavigator_ReadTo_2()
{
char[] stop = { ']', '>' };
TextNavigator navigator = new TextNavigator("ABC]>DEF");
Assert.AreEqual("ABC]", navigator.ReadTo(stop));
Assert.AreEqual(">", navigator.ReadTo(stop));
Assert.AreEqual("DEF", navigator.ReadTo(stop));
Assert.IsNull(navigator.ReadTo(stop));
}
public static FileSpecification Parse
(
string text
)
{
// Sure.NotNullNorEmpty(text, nameof(text));
var navigator = new TextNavigator(text);
var path = int.Parse
(
navigator.ReadTo(".").ToString()
);
var database = navigator.ReadTo(".").ToString().EmptyToNull();
var fileName = navigator.GetRemainingText().ToString();
var binaryFile = fileName.StartsWith("@");
if (binaryFile)
{
fileName = fileName.Substring(1);
}
string?content = null;
var position = fileName.IndexOf("&", StringComparison.InvariantCulture);
if (position >= 0)
{
content = fileName.Substring(position + 1);
fileName = fileName.Substring(0, position);
}
var result = new FileSpecification
{
BinaryFile = binaryFile,
Path = (IrbisPath)path,
Database = database,
FileName = fileName,
Content = content
};
return(result);
}
public static FileSpecification Parse
(
[NotNull] string text
)
{
Sure.NotNullNorEmpty(text, "text");
TextNavigator navigator = new TextNavigator(text);
int path = NumericUtility.ParseInt32(navigator.ReadTo("."));
string database = navigator.ReadTo(".").EmptyToNull();
string fileName = navigator.GetRemainingText();
bool binaryFile = fileName.StartsWith("@");
if (binaryFile)
{
fileName = fileName.Substring(1);
}
string content = null;
int position = fileName.IndexOf("&");
if (position >= 0)
{
content = fileName.Substring(position + 1);
fileName = fileName.Substring(0, position);
}
FileSpecification result = new FileSpecification
{
BinaryFile = binaryFile,
Path = (IrbisPath)path,
Database = database,
FileName = fileName,
Content = content
};
return(result);
}
public void TextNavigator_ReadTo_3()
{
TextNavigator navigator = new TextNavigator("314abc>>>hello");
string actual = navigator.ReadTo(">>>");
Assert.AreEqual("314abc", actual);
Assert.AreEqual("hello", navigator.GetRemainingText());
navigator = new TextNavigator("314abc>>hello");
actual = navigator.ReadTo(">>>");
Assert.IsNull(actual);
Assert.AreEqual("314abc>>hello", navigator.GetRemainingText());
navigator = new TextNavigator(string.Empty);
Assert.IsNull(navigator.ReadTo(">>>"));
}
public void TextNavigator_ReadTo_1()
{
const string text1 = "'ABC'DEF";
TextNavigator navigator = new TextNavigator(text1);
char open = navigator.ReadChar();
string actual = navigator.ReadTo(open);
Assert.AreEqual("ABC'", actual);
const string text2 = "'ABC";
navigator = new TextNavigator(text2);
open = navigator.ReadChar();
actual = navigator.ReadTo(open);
Assert.AreEqual("ABC", actual);
navigator = new TextNavigator(string.Empty);
Assert.IsNull(navigator.ReadTo(open));
}
public static string[] SplitText
(
[CanBeNull] string text
)
{
if (string.IsNullOrEmpty(text))
{
return(new string[0]);
}
List <string> result = new List <string>();
TextNavigator navigator = new TextNavigator(text);
while (!navigator.IsEOF)
{
navigator.SkipWhitespace();
if (navigator.IsEOF)
{
break;
}
char c = navigator.ReadChar();
string item;
if (c == CommandLineSettings.ArgumentDelimiter)
{
item = c + navigator.ReadTo
(
CommandLineSettings.ArgumentDelimiter
);
}
else
{
item = c + navigator.ReadUntilWhiteSpace();
}
result.Add(item);
}
return(result.ToArray());
}
public static string RemoveComments
(
[CanBeNull] string text
)
{
const char ZERO = '\0';
if (string.IsNullOrEmpty(text))
{
return(text);
}
if (!text.Contains("/*"))
{
return(text);
}
StringBuilder result = new StringBuilder(text.Length);
TextNavigator navigator = new TextNavigator(text);
char state = ZERO;
while (!navigator.IsEOF)
{
char c = navigator.ReadChar();
switch (state)
{
case '\'':
if (c == '\'')
{
state = ZERO;
}
result.Append(c);
break;
case '"':
if (c == '"')
{
state = ZERO;
}
result.Append(c);
break;
case '|':
if (c == '|')
{
state = ZERO;
}
result.Append(c);
break;
default:
Debug.Assert(state == ZERO, "state == ZERO");
if (c == '/')
{
if (navigator.PeekChar() == '*')
{
navigator.ReadTo('\r', '\n');
}
else
{
result.Append(c);
}
}
else if (c == '\'' || c == '"' || c == '|')
{
state = c;
result.Append(c);
}
else
{
result.Append(c);
}
break;
}
}
return(result.ToString());
}
