public static string FormatWithMacros(this string value, GetMacroValueDelegate getMacroValue, object eachItem = null, GetMacroValueDelegate preprocessValue = null, GetMacroValueDelegate postprocessValue = null)
{
if (preprocessValue != null)
{
foreach (GetMacroValueDelegate preprocess in preprocessValue.GetInvocationList())
{
value = preprocess(value);
}
}
if (getMacroValue != null)
{
value = value.ProcessMacroInternal(getMacroValue, eachItem); // no macro handler?, just return
}
if (postprocessValue != null)
{
foreach (GetMacroValueDelegate postprocess in postprocessValue.GetInvocationList())
{
value = postprocess(value);
}
}
return(value);
}
public void AddMacroHandler(GetMacroValueDelegate macroHandler)
{
if (macroHandler != null)
{
_map.GetMacroValue += macroHandler;
}
}
private static string ProcessMacroInternal(this string value, GetMacroValueDelegate getMacroValue, object eachItem = null)
{
bool keepGoing;
do
{
keepGoing = false;
foreach (var macro in Macros)
{
var matches = macro.Matches(value);
foreach (var m in matches)
{
var match = m as Match;
var innerMacro = match.Groups[2].Value;
var outerMacro = match.Groups[1].Value;
string replacement = null;
// get the first responder.
foreach (GetMacroValueDelegate del in getMacroValue.GetInvocationList())
{
replacement = del(innerMacro);
if (replacement != null)
{
break;
}
}
if (eachItem != null)
{
// try resolving it as an ${each.property} style.
// the element at the front is the 'this' value
// just trim off whatever is at the front up to and including the first dot.
try {
if (innerMacro.Contains("."))
{
innerMacro = innerMacro.Substring(innerMacro.IndexOf('.') + 1).Trim();
var r = eachItem.SimpleEval(innerMacro).ToString();
value = value.Replace(outerMacro, r);
keepGoing = true;
}
} catch {
// meh. screw em'
}
}
if (replacement != null)
{
value = value.Replace(outerMacro, replacement);
keepGoing = true;
break;
}
}
}
} while (keepGoing);
return(value);
}
private IEnumerable <string> AcceptFirstAnswer(GetMacroValueDelegate getMacroDelegate, string innerMacro, IValueContext originalContext)
{
if (getMacroDelegate == null)
{
return(null);
}
var delegates = getMacroDelegate.GetInvocationList();
return(delegates.Count() > 1 ? delegates.Reverse().Select(each => AcceptFirstAnswer(each as GetMacroValueDelegate, innerMacro, originalContext)).FirstOrDefault(each => each != null) : getMacroDelegate(innerMacro, originalContext));
}
public static string FormatWithMacros(this string value, GetMacroValueDelegate getMacroValue, object eachItem = null, GetMacroValueDelegate preprocessValue = null, GetMacroValueDelegate postprocessValue = null) {
if (preprocessValue != null) {
foreach (GetMacroValueDelegate preprocess in preprocessValue.GetInvocationList()) {
value = preprocess(value);
}
}
if (getMacroValue != null) {
value = value.ProcessMacroInternal(getMacroValue, eachItem); // no macro handler?, just return
}
if (postprocessValue != null) {
foreach (GetMacroValueDelegate postprocess in postprocessValue.GetInvocationList()) {
value = postprocess(value);
}
}
return value;
}
private static string ProcessMacroInternal(this string value, GetMacroValueDelegate getMacroValue, object eachItem = null) {
bool keepGoing;
do {
keepGoing = false;
foreach (var macro in Macros) {
var matches = macro.Matches(value);
foreach (var m in matches) {
var match = m as Match;
var innerMacro = match.Groups[2].Value;
var outerMacro = match.Groups[1].Value;
string replacement = null;
// get the first responder.
foreach (GetMacroValueDelegate del in getMacroValue.GetInvocationList()) {
replacement = del(innerMacro);
if (replacement != null) {
break;
}
}
if (eachItem != null) {
// try resolving it as an ${each.property} style.
// the element at the front is the 'this' value
// just trim off whatever is at the front up to and including the first dot.
try {
if (innerMacro.Contains(".")) {
innerMacro = innerMacro.Substring(innerMacro.IndexOf('.') + 1).Trim();
var r = eachItem.SimpleEval(innerMacro).ToString();
value = value.Replace(outerMacro, r);
keepGoing = true;
}
} catch {
// meh. screw em'
}
}
if (replacement != null) {
value = value.Replace(outerMacro, replacement);
keepGoing = true;
break;
}
}
}
} while (keepGoing);
return value;
}
private IEnumerable<string> AcceptFirstAnswer(GetMacroValueDelegate getMacroDelegate, string innerMacro, IValueContext originalContext)
{
if(getMacroDelegate == null) {
return null;
}
var delegates = getMacroDelegate.GetInvocationList();
return delegates.Count() > 1 ? delegates.Reverse().Select(each => AcceptFirstAnswer(each as GetMacroValueDelegate, innerMacro, originalContext)).FirstOrDefault(each => each != null) : getMacroDelegate(innerMacro, originalContext);
}
public void AddMacroHandler(GetMacroValueDelegate macroHandler)
{
if (macroHandler != null) {
_map.GetMacroValue += macroHandler;
}
}
