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Add BinaryParser

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Didn't end up using this, but might be useful in the future
This commit is contained in:
William Casarin
2023-04-26 10:37:28 -07:00
parent 225a028f3e
commit 46b53e1326
2 changed files with 59 additions and 0 deletions
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11
damus.xcodeproj/project.pbxproj
View File

@@ -38,6 +38,7 @@
4C0A3F8F280F640A000448DE /* ThreadModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C0A3F8E280F640A000448DE /* ThreadModel.swift */; };
4C0A3F91280F6528000448DE /* ChatView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C0A3F90280F6528000448DE /* ChatView.swift */; };
4C0A3F93280F66F5000448DE /* ReplyMap.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C0A3F92280F66F5000448DE /* ReplyMap.swift */; };
4C198DF829F89323004C165C /* BinaryParser.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C198DF729F89323004C165C /* BinaryParser.swift */; };
4C1A9A1A29DCA17E00516EAC /* ReplyCounter.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C1A9A1929DCA17E00516EAC /* ReplyCounter.swift */; };
4C1A9A1D29DDCF9B00516EAC /* NotificationSettingsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C1A9A1C29DDCF9B00516EAC /* NotificationSettingsView.swift */; };
4C1A9A1F29DDD24B00516EAC /* AppearanceSettingsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C1A9A1E29DDD24B00516EAC /* AppearanceSettingsView.swift */; };
@@ -416,6 +417,7 @@
4C0A3F8E280F640A000448DE /* ThreadModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ThreadModel.swift; sourceTree = "<group>"; };
4C0A3F90280F6528000448DE /* ChatView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ChatView.swift; sourceTree = "<group>"; };
4C0A3F92280F66F5000448DE /* ReplyMap.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ReplyMap.swift; sourceTree = "<group>"; };
4C198DF729F89323004C165C /* BinaryParser.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BinaryParser.swift; sourceTree = "<group>"; };
4C1A9A1929DCA17E00516EAC /* ReplyCounter.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ReplyCounter.swift; sourceTree = "<group>"; };
4C1A9A1C29DDCF9B00516EAC /* NotificationSettingsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NotificationSettingsView.swift; sourceTree = "<group>"; };
4C1A9A1E29DDD24B00516EAC /* AppearanceSettingsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppearanceSettingsView.swift; sourceTree = "<group>"; };
@@ -855,6 +857,14 @@
path = Models;
sourceTree = "<group>";
};
4C198DF629F89317004C165C /* Parser */ = {
isa = PBXGroup;
children = (
4C198DF729F89323004C165C /* BinaryParser.swift */,
);
path = Parser;
sourceTree = "<group>";
};
4C1A9A1B29DDCF8B00516EAC /* Settings */ = {
isa = PBXGroup;
children = (
@@ -1644,6 +1654,7 @@
4C06670628FCB08600038D2A /* ImageCarousel.swift in Sources */,
F79C7FAD29D5E9620000F946 /* EditProfilePictureControl.swift in Sources */,
4C9F18E229AA9B6C008C55EC /* CustomizeZapView.swift in Sources */,
4C198DF829F89323004C165C /* BinaryParser.swift in Sources */,
4C75EFAF28049D350006080F /* NostrFilter.swift in Sources */,
4C3EA64C28FF59AC00C48A62 /* bech32_util.c in Sources */,
4CE1399029F0661A00AC6A0B /* RepostAction.swift in Sources */,

48
damus/Util/Parser/BinaryParser.swift Normal file
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@@ -0,0 +1,48 @@
//
// BinaryParser.swift
// damus
//
// Created by William Casarin on 2023-04-25.
//
import Foundation
class BinaryParser {
var pos: Int
var buf: [UInt8]
init(buf: [UInt8], pos: Int = 0) {
self.pos = pos
self.buf = buf
}
func read_byte() -> UInt8? {
guard pos < buf.count else {
return nil
}
let v = buf[pos]
pos += 1
return v
}
func read_bytes(_ n: Int) -> [UInt8]? {
guard pos + n < buf.count else {
return nil
}
let v = [UInt8](self.buf[pos...pos+n])
return v
}
func read_u16() -> UInt16? {
let start = self.pos
guard let b1 = read_byte(), let b2 = read_byte() else {
self.pos = start
return nil
}
return (UInt16(b1) << 8) | UInt16(b2)
}
}