private static string BuildUrl(string hash, int?size, GravatarRating rating, GravatarDefaultImage defaultImage)
{
var url = new StringBuilder("http://www.gravatar.com/avatar/", 90);
url.Append(hash);
bool isFirst = true;
Action <string, string> addParam = (p, v) => {
url.AppendFormat("{0}{1}={2}", (isFirst ? '?' : '&'), p, v);
isFirst = false;
};
if (size != null)
{
if (size < 1 || size > 512)
{
throw new ArgumentOutOfRangeException(nameof(size), size, "Must be null or between 1 and 512, inclusive");
}
addParam("s", size.Value.ToString());
}
if (rating != GravatarRating.Default)
{
addParam("r", rating.ToString().ToLower());
}
if (defaultImage != GravatarDefaultImage.Default)
{
string code = GenerateDefaultImageCode(defaultImage);
addParam("d", code);
}
return(url.ToString());
}
private static string BuildUrl(string hash, int? size, GravatarRating rating, GravatarDefaultImage defaultImage) {
var url = new StringBuilder("http://www.gravatar.com/avatar/", 90);
url.Append(hash);
bool isFirst = true;
Action<string, string> addParam = (p, v) => {
url.AppendFormat("{0}{1}={2}", (isFirst ? '?' : '&'), p, v);
isFirst = false;
};
if (size != null) {
if (size < 1 || size > 512) {
throw new ArgumentOutOfRangeException("size", size, "Must be null or between 1 and 512, inclusive");
}
addParam("s", size.Value.ToString());
}
if (rating != GravatarRating.Default) {
addParam("r", rating.ToString().ToLower());
}
if (defaultImage != GravatarDefaultImage.Default) {
string code = GenerateDefaultImageCode(defaultImage);
addParam("d", code);
}
return url.ToString();
}
/// <summary>
/// Creates HTML for an <c>img</c> element that presents a Gravatar icon.
/// </summary>
/// <param name="html">The <see cref="HtmlHelper"/> upon which this extension method is provided.</param>
/// <param name="email">The email address used to identify the icon.</param>
/// <param name="size">An optional parameter that specifies the size of the square image in pixels.</param>
/// <param name="rating">An optional parameter that specifies the safety level of allowed images.</param>
/// <param name="defaultImage">An optional parameter that controls what image is displayed for email addresses that don't have associated Gravatar icons.</param>
/// <param name="htmlAttributes">An optional parameter holding additional attributes to be included on the <c>img</c> element.</param>
/// <returns>An HTML string of the <c>img</c> element that presents a Gravatar icon.</returns>
public static string Gravatar(this HtmlHelper html,
string email,
int? size = null,
GravatarRating rating = GravatarRating.Default,
GravatarDefaultImage defaultImage = GravatarDefaultImage.MysteryMan,
object htmlAttributes = null)
{
var url = new StringBuilder("http://www.gravatar.com/avatar/", 90);
url.Append(email.ToMd5Hash());
var isFirst = true;
Action<string, string> addParam = (p, v) =>
{
url.Append(isFirst ? '?' : '&');
isFirst = false;
url.Append(p);
url.Append('=');
url.Append(v);
};
if (size != null)
{
if (size < 1 || size > 512)
throw new ArgumentOutOfRangeException("size", size, "Must be null or between 1 and 512, inclusive.");
addParam("s", size.Value.ToString(CultureInfo.InvariantCulture));
}
if (rating != GravatarRating.Default)
addParam("r", rating.ToString().ToLower());
switch (defaultImage)
{
case GravatarDefaultImage.Http404:
addParam("d", "404");
break;
case GravatarDefaultImage.Identicon:
addParam("d", "identicon");
break;
case GravatarDefaultImage.MonsterId:
addParam("d", "monsterid");
break;
case GravatarDefaultImage.MysteryMan:
addParam("d", "mm");
break;
case GravatarDefaultImage.Wavatar:
addParam("d", "wavatar");
break;
}
var tag = new TagBuilder("img");
tag.MergeAttributes(new RouteValueDictionary(htmlAttributes));
tag.Attributes.Add("src", url.ToString());
if (size != null)
{
tag.Attributes.Add("width", size.ToString());
tag.Attributes.Add("height", size.ToString());
}
return tag.ToString(TagRenderMode.SelfClosing);
}
/// <summary>
/// Gets image url that depends on the given e-mail address.
/// </summary>
/// <param name="email"></param>
/// <param name="size"></param>
/// <param name="rating"></param>
/// <param name="defaultImage"></param>
/// <returns></returns>
/// <exception cref="ArgumentOutOfRangeException"></exception>
public static string GetImageAddress(string email, int?size = null,
GravatarRating rating = GravatarRating.Default,
GravatarDefaultImage defaultImage = GravatarDefaultImage.MysteryMan)
{
var url = new StringBuilder("//www.gravatar.com/avatar/", 90);
url.Append(GetEmailHash(email));
var isFirst = true;
Action <string, string> addParam = (p, v) =>
{
url.Append(isFirst ? '?' : '&');
isFirst = false;
url.Append(p);
url.Append('=');
url.Append(v);
};
if (size != null)
{
if (size < 1 || size > 512)
{
throw new ArgumentOutOfRangeException("size", size,
"Must be null or between 1 and 512, inclusive.");
}
addParam("s", size.Value.ToString());
}
if (rating != GravatarRating.Default)
{
addParam("r", rating.ToString().ToLower());
}
if (defaultImage != GravatarDefaultImage.Default)
{
if (defaultImage == GravatarDefaultImage.Http404)
{
addParam("d", "404");
}
else if (defaultImage == GravatarDefaultImage.Identicon)
{
addParam("d", "identicon");
}
else if (defaultImage == GravatarDefaultImage.MonsterId)
{
addParam("d", "monsterid");
}
else if (defaultImage == GravatarDefaultImage.MysteryMan)
{
addParam("d", "mm");
}
else if (defaultImage == GravatarDefaultImage.Wavatar)
{
addParam("d", "wavatar");
}
}
return(url.ToString());
}
public static string GetUrl(
string email,
int imageSize = 80,
string defaultImage = null,
GravatarRating rating = GravatarRating.Default,
string imageExtension = null
)
{
if (String.IsNullOrEmpty(email))
{
throw new ArgumentException(
CommonResources.Argument_Cannot_Be_Null_Or_Empty,
"email"
);
}
if ((imageSize <= 0) || (imageSize > 512))
{
throw new ArgumentException(
HelpersToolkitResources.Gravatar_InvalidImageSize,
"imageSize"
);
}
StringBuilder url = new StringBuilder(GravatarUrl);
email = email.Trim().ToLowerInvariant();
url.Append(Crypto.Hash(email, algorithm: "md5").ToLowerInvariant());
if (!String.IsNullOrEmpty(imageExtension))
{
if (!imageExtension.StartsWith(".", StringComparison.Ordinal))
{
url.Append('.');
}
url.Append(imageExtension);
}
url.Append("?s=");
url.Append(imageSize);
if (rating != GravatarRating.Default)
{
url.Append("&r=");
url.Append(rating.ToString().ToLowerInvariant());
}
if (!String.IsNullOrEmpty(defaultImage))
{
url.Append("&d=");
url.Append(HttpUtility.UrlEncode(defaultImage));
}
return(HttpUtility.HtmlAttributeEncode(url.ToString()));
}
public static string GetUrl(string email, int imageSize = 80, string defaultImage = null,
GravatarRating rating = GravatarRating.Default, string imageExtension = null)
{
if (String.IsNullOrEmpty(email))
{
throw new ArgumentException(CommonResources.Argument_Cannot_Be_Null_Or_Empty, "email");
}
if ((imageSize <= 0) || (imageSize > 512))
{
throw new ArgumentException(HelpersToolkitResources.Gravatar_InvalidImageSize, "imageSize");
}
StringBuilder url = new StringBuilder(GravatarUrl);
email = email.Trim().ToLowerInvariant();
url.Append(Crypto.Hash(email, algorithm: "md5").ToLowerInvariant());
if (!String.IsNullOrEmpty(imageExtension))
{
if (!imageExtension.StartsWith(".", StringComparison.Ordinal))
{
url.Append('.');
}
url.Append(imageExtension);
}
url.Append("?s=");
url.Append(imageSize);
if (rating != GravatarRating.Default)
{
url.Append("&r=");
url.Append(rating.ToString().ToLowerInvariant());
}
if (!String.IsNullOrEmpty(defaultImage))
{
url.Append("&d=");
url.Append(HttpUtility.UrlEncode(defaultImage));
}
return HttpUtility.HtmlAttributeEncode(url.ToString());
}
private string GetUrl(string email, int?size, string defaultImage, GravatarRating rating)
{
StringBuilder url = new StringBuilder("http://www.gravatar.com/avatar/");
url.Append(GetHash(Email));
if (size == null)
{
size = 80;
}
url.Append("?s=");
url.Append(size);
if (!String.IsNullOrEmpty(defaultImage))
{
url.Append("&d=");
url.Append(defaultImage);
}
else if (DefaultImageBehavior != GravatarDefaultImageBehavior.Default)
{
var behaviorName = DefaultImageBehavior.ToString().ToLower();
switch (DefaultImageBehavior)
{
case GravatarDefaultImageBehavior.MysteryMan:
behaviorName = "mm";
break;
}
url.Append("&d=" + behaviorName);
}
if (rating != GravatarRating.Default)
{
url.Append("&r=");
url.Append(rating.ToString().ToLowerInvariant());
}
return(url.ToString());
}
/// <summary>
/// Renders an HTML img tag that references a Gravatar avatar based off a user's email address
/// </summary>
/// <param name="html">The <see cref="HtmlHelper"/></param>
/// <param name="email">The email address</param>
/// <param name="defaultGravatar">
/// The avatar you want to use if the email address doesn't have a Gravatar associated with it.
/// You can either provide a URL to the image you want to use, or pass in one of the constants
/// defined in <see cref="GravatarDefaults"/>.
/// </param>
/// <param name="size">The size in pixels of the image return. Must be between 1 and 512.</param>
/// <param name="rating">The maximum rating that the Gravatar can be.</param>
/// <param name="htmlAttributes">Any HTML attributes you want applied to the img tag</param>
/// <returns>The img tag string</returns>
/// <exception cref="ArgumentException">
/// If <paramref name="size"/> is less than 1 or greater than 512
/// </exception>
public static MvcHtmlString Gravatar(this HtmlHelper html, string email, string defaultGravatar, int size, GravatarRating rating, IDictionary <string, object> htmlAttributes)
{
if (size < 1 || size > 512)
{
throw new ArgumentException("size must be between 1 and 512", "size");
}
UrlHelper url = new UrlHelper(html.ViewContext.RequestContext);
defaultGravatar = url.Encode(defaultGravatar);
if (email == null)
{
email = String.Empty;
}
email = email.ToLower();
StringBuilder hashBuilder = new StringBuilder();
MD5 md5 = MD5.Create();
foreach (byte aByte in md5.ComputeHash(Encoding.Default.GetBytes(email)))
{
hashBuilder.Append(aByte.ToString("x2"));
}
TagBuilder img = new TagBuilder("img");
img.MergeAttributes(htmlAttributes);
img.Attributes["src"] = String.Format("http://www.gravatar.com/avatar/{0}?d={1}&s={2}&r={3}", hashBuilder, defaultGravatar, size, rating.ToString().ToLower());
img.Attributes["width"] = size.ToString();
img.Attributes["height"] = size.ToString();
return(MvcHtmlString.Create(img.ToString(TagRenderMode.SelfClosing)));
}
string GetUrl(string email, int? size, string defaultImage, GravatarRating rating) {
var url = new StringBuilder("http://www.gravatar.com/avatar/");
url.Append(GetHash(Email));
if(size == null) size = 80;
url.Append("?s=");
url.Append(size);
if(!String.IsNullOrEmpty(defaultImage)) {
url.Append("&d=");
url.Append(defaultImage);
}
else if(DefaultImageBehavior != GravatarDefaultImageBehavior.Default) {
var behaviorName = DefaultImageBehavior.ToString().ToLower();
switch(DefaultImageBehavior) {
case GravatarDefaultImageBehavior.MysteryMan:
behaviorName = "mm";
break;
}
url.Append("&d=" + behaviorName);
}
if(rating != GravatarRating.Default) {
url.Append("&r=");
url.Append(rating.ToString().ToLowerInvariant());
}
return url.ToString();
}
public static string Gravatar(this HtmlHelper html,
string email,
int?size = null,
GravatarRating rating = GravatarRating.Default,
GravatarDefaultImage defaultImage = GravatarDefaultImage.MysteryMan,
object htmlAttributes = null)
{
var url = new StringBuilder("http://www.gravatar.com/avatar/", 90);
url.Append(GetEmailHash(email));
var isFirst = true;
Action <string, string> addParam = (p, v) =>
{
url.Append(isFirst ? '?' : '&');
isFirst = false;
url.Append(p);
url.Append('=');
url.Append(v);
};
if (size != null)
{
if (size < 1 || size > 512)
{
throw new ArgumentOutOfRangeException("size", size, "Must be null or between 1 and 512, inclusive.");
}
addParam("s", size.Value.ToString());
}
if (rating != GravatarRating.Default)
{
addParam("r", rating.ToString().ToLower());
}
if (defaultImage != GravatarDefaultImage.Default)
{
if (defaultImage == GravatarDefaultImage.Http404)
{
addParam("d", "404");
}
else if (defaultImage == GravatarDefaultImage.Identicon)
{
addParam("d", "identicon");
}
if (defaultImage == GravatarDefaultImage.MonsterId)
{
addParam("d", "monsterid");
}
if (defaultImage == GravatarDefaultImage.MysteryMan)
{
addParam("d", "mm");
}
if (defaultImage == GravatarDefaultImage.Wavatar)
{
addParam("d", "wavatar");
}
}
var tag = new TagBuilder("img");
tag.MergeAttributes(new RouteValueDictionary(htmlAttributes));
tag.Attributes.Add("src", url.ToString());
if (size != null)
{
tag.Attributes.Add("width", size.ToString());
tag.Attributes.Add("height", size.ToString());
}
return(tag.ToString());
}
public static string Value(this GravatarRating rating) => rating.ToString().ToLower();
public static IHtmlString Gravatar(
HtmlHelper Html,
dynamic Shape,
string Email,
int? Size = null,
GravatarRating Rating = GravatarRating.Default,
GravatarDefaultImage DefaultImage = GravatarDefaultImage.MysteryMan) {
var url = new StringBuilder("//www.gravatar.com/avatar/", 90);
url.Append(GetEmailHash(Email));
var isFirst = true;
Action<string, string> addParam = (p, v) => {
url.Append(isFirst ? '?' : '&');
isFirst = false;
url.Append(p);
url.Append('=');
url.Append(v);
};
if (Size != null) {
if (Size < 1 || Size > 512)
throw new ArgumentOutOfRangeException("size", Size, "Must be null or between 1 and 512, inclusive.");
addParam("s", Size.Value.ToString());
}
if (Rating != GravatarRating.Default)
addParam("r", Rating.ToString().ToLower());
if (DefaultImage != GravatarDefaultImage.Default) {
if (DefaultImage == GravatarDefaultImage.Http404)
addParam("d", "404");
else if (DefaultImage == GravatarDefaultImage.Identicon)
addParam("d", "identicon");
if (DefaultImage == GravatarDefaultImage.MonsterId)
addParam("d", "monsterid");
if (DefaultImage == GravatarDefaultImage.MysteryMan)
addParam("d", "mm");
if (DefaultImage == GravatarDefaultImage.Wavatar)
addParam("d", "wavatar");
}
var tagBuilder = new TagBuilder("img");
IDictionary<string, string> htmlAttributes = Shape.Attributes;
IEnumerable<string> classes = Shape.Classes;
string id = Shape.Id;
tagBuilder.MergeAttributes(htmlAttributes, false);
tagBuilder.Attributes.Add("src", url.ToString());
foreach (var cssClass in classes ?? Enumerable.Empty<string>()) {
tagBuilder.AddCssClass(cssClass);
}
if (!string.IsNullOrWhiteSpace(id)) {
tagBuilder.GenerateId(id);
}
if (Size != null) {
tagBuilder.Attributes.Add("width", Size.ToString());
tagBuilder.Attributes.Add("height", Size.ToString());
}
return MvcHtmlString.Create(tagBuilder.ToString());
}
public static IHtmlString Gravatar(
HtmlHelper Html,
dynamic Shape,
string Email,
int?Size = null,
GravatarRating Rating = GravatarRating.Default,
GravatarDefaultImage DefaultImage = GravatarDefaultImage.MysteryMan)
{
var url = new StringBuilder("//www.gravatar.com/avatar/", 90);
url.Append(GetEmailHash(Email));
var isFirst = true;
Action <string, string> addParam = (p, v) => {
url.Append(isFirst ? '?' : '&');
isFirst = false;
url.Append(p);
url.Append('=');
url.Append(v);
};
if (Size != null)
{
if (Size < 1 || Size > 512)
{
throw new ArgumentOutOfRangeException("size", Size, "Must be null or between 1 and 512, inclusive.");
}
addParam("s", Size.Value.ToString());
}
if (Rating != GravatarRating.Default)
{
addParam("r", Rating.ToString().ToLower());
}
if (DefaultImage != GravatarDefaultImage.Default)
{
if (DefaultImage == GravatarDefaultImage.Http404)
{
addParam("d", "404");
}
else if (DefaultImage == GravatarDefaultImage.Identicon)
{
addParam("d", "identicon");
}
if (DefaultImage == GravatarDefaultImage.MonsterId)
{
addParam("d", "monsterid");
}
if (DefaultImage == GravatarDefaultImage.MysteryMan)
{
addParam("d", "mm");
}
if (DefaultImage == GravatarDefaultImage.Wavatar)
{
addParam("d", "wavatar");
}
}
var tagBuilder = new TagBuilder("img");
IDictionary <string, string> htmlAttributes = Shape.Attributes;
IEnumerable <string> classes = Shape.Classes;
string id = Shape.Id;
tagBuilder.MergeAttributes(htmlAttributes, false);
tagBuilder.Attributes.Add("src", url.ToString());
foreach (var cssClass in classes ?? Enumerable.Empty <string>())
{
tagBuilder.AddCssClass(cssClass);
}
if (!string.IsNullOrWhiteSpace(id))
{
tagBuilder.GenerateId(id);
}
if (Size != null)
{
tagBuilder.Attributes.Add("width", Size.ToString());
tagBuilder.Attributes.Add("height", Size.ToString());
}
return(MvcHtmlString.Create(tagBuilder.ToString()));
}
private static string BuildGravatarUrl(string email, GravatarRating rating, GravatarDefaultImage defaultImage, int? size = null)
{
var urlBuilder = new StringBuilder(GRAVATAR_URL, 90);
urlBuilder.Append(GetEmailHash(email));
var isFirst = true;
Action<string, string> addParam = (name, value) =>
{
urlBuilder.Append(isFirst ? '?' : '&');
isFirst = false;
urlBuilder.Append(name);
urlBuilder.Append("=");
urlBuilder.Append(value);
};
if (size != null)
{
if (size < 1 || size > 512)
throw new ArgumentOutOfRangeException("size", size, "Must be null or value between 1 and 512, inclusive.");
addParam("s", size.Value.ToString());
}
if (rating != GravatarRating.Default)
addParam("r", rating.ToString().ToLower());
if (defaultImage != GravatarDefaultImage.Default)
{
string imageToShow = "";
switch (defaultImage)
{
case GravatarDefaultImage.Http404:
imageToShow = "404";
break;
case GravatarDefaultImage.MysteryMan:
imageToShow = "mm";
break;
case GravatarDefaultImage.Identicon:
imageToShow = "identicon";
break;
case GravatarDefaultImage.MonsterId:
imageToShow = "monsterid";
break;
case GravatarDefaultImage.Wavatar:
imageToShow = "wavatar";
break;
}
addParam("d", imageToShow);
}
return urlBuilder.ToString();
}
