/// <summary>
/// Parses CSS file
/// </summary>
/// <param name="reader">StreamReader with our file</param>
public void ParseCssFile(System.IO.StreamReader reader, IEnumerable<CssProperty> tochange)
{
// This could've been solved in so many ways. Here I'm going to
// deconstruct CSS file into our models just for MVC pattern's sake
List<CssProperty> cssProp = new List<CssProperty>();
List<string> lines = new List<string>();
// Main dissadvantage of this parser is that it reads CSS file
// line by line (which means that if you have expanded CSS this parser is useless)
// USAGE : you have to compact your CSS file, each line should represent one element
string line;
while ((line = reader.ReadLine()) != null)
{
// By simple string manipulation, we are going to dissect our template CSS file
// to find classes, ids and elements
if (!String.IsNullOrWhiteSpace(line))
{
string[] chunk = line.Split(new char[] { '{', '}' }, StringSplitOptions.RemoveEmptyEntries);
string classOrId = chunk[0];
string[] attributes = chunk[1].Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
CssProperty cssClass = new CssProperty();
// find classes
if (chunk[0].StartsWith(".", StringComparison.InvariantCultureIgnoreCase))
{
cssClass = new CssProperty() { name = chunk[0].Split('.')[1].Trim(), type = "class", values = new List<CssValue>() };
}
// find ids
else if (chunk[0].StartsWith("#", StringComparison.InvariantCultureIgnoreCase))
{
cssClass = new CssProperty() { name = chunk[0].Split('#')[1].Trim(), type = "id", values = new List<CssValue>() };
}
// elements appear to have no 'prefix'
else
cssClass = new CssProperty() { name = chunk[0].Trim(), type = "element", values = new List<CssValue>() };
foreach (var attribute in attributes)
{
if (!String.IsNullOrWhiteSpace(attribute))
{
string[] _name = attribute.Split(':');
cssClass.values.Add(new CssValue { name = _name[0].Trim(), value = _name[1].Trim() });
}
}
if (cssClass.name != null && cssClass.type != null)
cssProp.Add(cssClass);
}
}
// ... and now, let's construct our new CSS file.
foreach (var prop in cssProp)
{
string name = "";
// Recreate valid CSS names upon values find in our model classes
switch (prop.type)
{
case ("class"):
name = "." + prop.name;
break;
case ("id"):
name = "#" + prop.name;
break;
case ("element"):
name = prop.name;
break;
}
// Recreate values of CSS attributes
foreach (var attribute in prop.values)
{
string values = "";
// Since you probably won't set all CSS attributes every time
// we have to differentiate the ones you do from ones you don's,
// and since I'm to bored with this project to figure out a better way
// try...catch will do.
// We're going to try setting value and if it fails that would mean that
// you haven't tried to set it at the first place, so 'catch' will
// set it as it was in the template file.
try
{
values = tochange.FirstOrDefault(n => n.name == prop.name).values.FirstOrDefault(v => v.name == attribute.name).value + "; ";
}
catch
{
values = attribute.value + "; ";
}
finally
{
if (lines.Any(p => p.StartsWith(name)))
{
lines[lines.FindIndex(p => p.StartsWith(name))] += attribute.name + ": " + values;
}
else
lines.Add((name + " { " + attribute.name + ": " + values));
}
}
}
reader.Close();
// Write our newly created file
using (StreamWriter file = new StreamWriter(Path.Combine(System.Web.Hosting.HostingEnvironment.ApplicationPhysicalPath + "static/css/demo-new.css")))
{
foreach (string lineInFile in lines)
{
file.WriteLine(lineInFile + " }");
}
file.Close();
}
}
/// <summary>
/// Parses CSS file
/// </summary>
/// <param name="reader">StreamReader with our file</param>
public void ParseCssFile(System.IO.StreamReader reader, IEnumerable <CssProperty> tochange)
{
// This could've been solved in so many ways. Here I'm going to
// deconstruct CSS file into our models just for MVC pattern's sake
List <CssProperty> cssProp = new List <CssProperty>();
List <string> lines = new List <string>();
// Main dissadvantage of this parser is that it reads CSS file
// line by line (which means that if you have expanded CSS this parser is useless)
// USAGE : you have to compact your CSS file, each line should represent one element
string line;
while ((line = reader.ReadLine()) != null)
{
// By simple string manipulation, we are going to dissect our template CSS file
// to find classes, ids and elements
if (!String.IsNullOrWhiteSpace(line))
{
string[] chunk = line.Split(new char[] { '{', '}' }, StringSplitOptions.RemoveEmptyEntries);
string classOrId = chunk[0];
string[] attributes = chunk[1].Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
CssProperty cssClass = new CssProperty();
// find classes
if (chunk[0].StartsWith(".", StringComparison.InvariantCultureIgnoreCase))
{
cssClass = new CssProperty()
{
name = chunk[0].Split('.')[1].Trim(), type = "class", values = new List <CssValue>()
};
}
// find ids
else if (chunk[0].StartsWith("#", StringComparison.InvariantCultureIgnoreCase))
{
cssClass = new CssProperty()
{
name = chunk[0].Split('#')[1].Trim(), type = "id", values = new List <CssValue>()
};
}
// elements appear to have no 'prefix'
else
{
cssClass = new CssProperty()
{
name = chunk[0].Trim(), type = "element", values = new List <CssValue>()
}
};
foreach (var attribute in attributes)
{
if (!String.IsNullOrWhiteSpace(attribute))
{
string[] _name = attribute.Split(':');
cssClass.values.Add(new CssValue {
name = _name[0].Trim(), value = _name[1].Trim()
});
}
}
if (cssClass.name != null && cssClass.type != null)
{
cssProp.Add(cssClass);
}
}
}
// ... and now, let's construct our new CSS file.
foreach (var prop in cssProp)
{
string name = "";
// Recreate valid CSS names upon values find in our model classes
switch (prop.type)
{
case ("class"):
name = "." + prop.name;
break;
case ("id"):
name = "#" + prop.name;
break;
case ("element"):
name = prop.name;
break;
}
// Recreate values of CSS attributes
foreach (var attribute in prop.values)
{
string values = "";
// Since you probably won't set all CSS attributes every time
// we have to differentiate the ones you do from ones you don's,
// and since I'm to bored with this project to figure out a better way
// try...catch will do.
// We're going to try setting value and if it fails that would mean that
// you haven't tried to set it at the first place, so 'catch' will
// set it as it was in the template file.
try
{
values = tochange.FirstOrDefault(n => n.name == prop.name).values.FirstOrDefault(v => v.name == attribute.name).value + "; ";
}
catch
{
values = attribute.value + "; ";
}
finally
{
if (lines.Any(p => p.StartsWith(name)))
{
lines[lines.FindIndex(p => p.StartsWith(name))] += attribute.name + ": " + values;
}
else
{
lines.Add((name + " { " + attribute.name + ": " + values));
}
}
}
}
reader.Close();
// Write our newly created file
using (StreamWriter file = new StreamWriter(Path.Combine(System.Web.Hosting.HostingEnvironment.ApplicationPhysicalPath + "static/css/demo-new.css")))
{
foreach (string lineInFile in lines)
{
file.WriteLine(lineInFile + " }");
}
file.Close();
}
}
}
