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Support blockquotes in HTML/Markdown

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Wizou 2023-11-17 18:36:49 +01:00
parent 3861255710
commit 6b44dbae8a
2 changed files with 30 additions and 5 deletions
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5
README.md
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@ -168,7 +168,10 @@ See [Examples/Program_ListenUpdates.cs](https://github.com/wiz0u/WTelegramClient
An invalid API request can result in a `RpcException` being raised, reflecting the [error code and status text](https://revgram.github.io/errors.html) of the problem.
The other configuration items that you can provide include: **session_pathname, email, email_verification_code, session_key, server_address, device_model, system_version, app_version, system_lang_code, lang_pack, lang_code, firebase, user_id, bot_token**
To [prevent getting banned](https://wiz0u.github.io/WTelegramClient/FAQ#prevent-ban) during dev, you can connect to [test servers](https://docs.pyrogram.org/topics/test-servers), by adding this line in your Config callback:
`case "server_address": return "149.154.167.40:443"; // test DC`
The other configuration items that you can provide include: **session_pathname, email, email_verification_code, session_key, device_model, system_version, app_version, system_lang_code, lang_pack, lang_code, firebase, user_id, bot_token**
Optional API parameters have a default value of `null` when unset. Passing `null` for a required string/array is the same as *empty* (0-length).
Required API parameters/fields can sometimes be set to 0 or `null` when unused (check API documentation or experiment).

30
src/TL.Extensions.cs
View file

@ -56,6 +56,7 @@ namespace TL
public static MessageEntity[] MarkdownToEntities(this Client _, ref string text, bool premium = false, IReadOnlyDictionary<long, User> users = null)
{
var entities = new List<MessageEntity>();
MessageEntityBlockquote lastBlockQuote = null;
var sb = new StringBuilder(text);
for (int offset = 0; offset < sb.Length;)
{
@ -101,6 +102,16 @@ namespace TL
else
ProcessEntity<MessageEntityCode>();
break;
case '>' when offset == 0 || sb[offset - 1] == '\n':
sb.Remove(offset, 1);
if (lastBlockQuote is null || lastBlockQuote.length < offset - lastBlockQuote.offset)
entities.Add(lastBlockQuote = new MessageEntityBlockquote { offset = offset, length = -1 });
else
lastBlockQuote.length = -1;
break;
case '\n' when lastBlockQuote is { length: -1 }:
lastBlockQuote.length = ++offset - lastBlockQuote.offset;
break;
case '!' when offset + 1 < sb.Length && sb[offset + 1] == '[':
sb.Remove(offset, 1);
goto case '[';
@ -146,6 +157,8 @@ namespace TL
sb.Remove(offset, 1);
}
}
if (lastBlockQuote is { length: -1 })
lastBlockQuote.length = sb.Length - lastBlockQuote.offset;
text = sb.ToString();
return entities.Count == 0 ? null : entities.ToArray();
}
@ -163,16 +176,20 @@ namespace TL
var sb = new StringBuilder(message);
int entityIndex = 0;
var nextEntity = entities[entityIndex];
bool inBlockQuote = false;
char lastCh = '\0';
for (int offset = 0, i = 0; ; offset++, i++)
{
while (closings.Count != 0 && offset == closings[0].offset)
{
var md = closings[0].md;
if (i > 0 && md[0] == '_' && sb[i - 1] == '_') md = '\r' + md;
sb.Insert(i, md); i += md.Length;
closings.RemoveAt(0);
if (i > 0 && md[0] == '_' && sb[i - 1] == '_') md = '\r' + md;
if (md[0] == '>') { inBlockQuote = false; if (lastCh != '\n' && i < sb.Length && sb[i] != '\n') md = "\n"; else continue; }
sb.Insert(i, md); i += md.Length;
}
if (i == sb.Length) break;
if (lastCh == '\n' && inBlockQuote) sb.Insert(i++, '>');
for (; offset == nextEntity?.offset; nextEntity = ++entityIndex < entities.Length ? entities[entityIndex] : null)
{
if (EntityToMD.TryGetValue(nextEntity.GetType(), out var md))
@ -190,6 +207,8 @@ namespace TL
if (premium) closing.md = $"](tg://emoji?id={mecu.document_id})";
else continue;
}
else if (md[0] == '>')
{ inBlockQuote = true; if (lastCh is not '\n' and not '\0') md = "\n>"; }
else if (nextEntity is MessageEntityPre mep)
md = $"```{mep.language}\n";
int index = ~closings.BinarySearch(closing, Comparer<(int, string)>.Create((x, y) => x.Item1.CompareTo(y.Item1) | 1));
@ -198,11 +217,11 @@ namespace TL
sb.Insert(i, md); i += md.Length;
}
}
switch (sb[i])
switch (lastCh = sb[i])
{
case '_': case '*': case '~': case '`': case '#': case '+': case '-': case '=': case '.': case '!':
case '[': case ']': case '(': case ')': case '{': case '}': case '>': case '|': case '\\':
sb.Insert(i, '\\'); i++;
sb.Insert(i++, '\\');
break;
}
}
@ -222,6 +241,7 @@ namespace TL
[typeof(MessageEntityStrike)] = "~",
[typeof(MessageEntitySpoiler)] = "||",
[typeof(MessageEntityCustomEmoji)] = "![",
[typeof(MessageEntityBlockquote)] = ">",
};
/// <summary>Insert backslashes in front of Markdown reserved characters</summary>
@ -295,6 +315,7 @@ namespace TL
case "code": ProcessEntity<MessageEntityCode>(); break;
case "pre": ProcessEntity<MessageEntityPre>(); break;
case "tg-emoji" when closing: ProcessEntity<MessageEntityCustomEmoji>(); break;
case "blockquote": ProcessEntity<MessageEntityBlockquote>(); break;
default:
if (closing)
{
@ -412,6 +433,7 @@ namespace TL
[typeof(MessageEntityStrike)] = "s",
[typeof(MessageEntitySpoiler)] = "tg-spoiler",
[typeof(MessageEntityCustomEmoji)] = "tg-emoji",
[typeof(MessageEntityBlockquote)] = "blockquote",
};
/// <summary>Replace special HTML characters with their &amp;xx; equivalent</summary>