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const std = @import("std");
const bun = @import("bun");
const strings = bun.strings;
const string = bun.string;
const AsyncIO = @import("bun").AsyncIO;
const JSC = @import("bun").JSC;
const PathString = JSC.PathString;
const Environment = bun.Environment;
const C = bun.C;
const Syscall = @import("./syscall.zig");
const os = std.os;
const JSGlobalObject = JSC.JSGlobalObject;
const ArgumentsSlice = JSC.Node.ArgumentsSlice;
pub const BufferVectorized = struct {
extern fn memset_pattern16(b: *anyopaque, pattern16: *const anyopaque, len: usize) void;
pub fn fill(
str: *JSC.ZigString,
buf_ptr: [*]u8,
fill_length: usize,
encoding: JSC.Node.Encoding,
) callconv(.C) void {
if (str.len == 0) return;
var buf = buf_ptr[0..fill_length];
const written = switch (encoding) {
JSC.Node.Encoding.utf8 => if (str.is16Bit())
JSC.WebCore.Encoder.writeU16(str.utf16SliceAligned().ptr, str.utf16SliceAligned().len, buf.ptr, buf.len, JSC.Node.Encoding.utf8)
else
JSC.WebCore.Encoder.writeU8(str.slice().ptr, str.slice().len, buf.ptr, buf.len, JSC.Node.Encoding.utf8),
JSC.Node.Encoding.ascii => if (str.is16Bit())
JSC.WebCore.Encoder.writeU16(str.utf16SliceAligned().ptr, str.utf16SliceAligned().len, buf.ptr, buf.len, JSC.Node.Encoding.ascii)
else
JSC.WebCore.Encoder.writeU8(str.slice().ptr, str.slice().len, buf.ptr, buf.len, JSC.Node.Encoding.ascii),
JSC.Node.Encoding.latin1 => if (str.is16Bit())
JSC.WebCore.Encoder.writeU16(str.utf16SliceAligned().ptr, str.utf16SliceAligned().len, buf.ptr, buf.len, JSC.Node.Encoding.latin1)
else
JSC.WebCore.Encoder.writeU8(str.slice().ptr, str.slice().len, buf.ptr, buf.len, JSC.Node.Encoding.latin1),
JSC.Node.Encoding.buffer => if (str.is16Bit())
JSC.WebCore.Encoder.writeU16(str.utf16SliceAligned().ptr, str.utf16SliceAligned().len, buf.ptr, buf.len, JSC.Node.Encoding.buffer)
else
JSC.WebCore.Encoder.writeU8(str.slice().ptr, str.slice().len, buf.ptr, buf.len, JSC.Node.Encoding.buffer),
JSC.Node.Encoding.utf16le,
JSC.Node.Encoding.ucs2,
=> if (str.is16Bit())
JSC.WebCore.Encoder.writeU16(str.utf16SliceAligned().ptr, str.utf16SliceAligned().len, buf.ptr, buf.len, JSC.Node.Encoding.utf16le)
else
JSC.WebCore.Encoder.writeU8(str.slice().ptr, str.slice().len, buf.ptr, buf.len, JSC.Node.Encoding.utf16le),
JSC.Node.Encoding.base64 => if (str.is16Bit())
JSC.WebCore.Encoder.writeU16(str.utf16SliceAligned().ptr, str.utf16SliceAligned().len, buf.ptr, buf.len, JSC.Node.Encoding.base64)
else
JSC.WebCore.Encoder.writeU8(str.slice().ptr, str.slice().len, buf.ptr, buf.len, JSC.Node.Encoding.base64),
JSC.Node.Encoding.base64url => if (str.is16Bit())
JSC.WebCore.Encoder.writeU16(str.utf16SliceAligned().ptr, str.utf16SliceAligned().len, buf.ptr, buf.len, JSC.Node.Encoding.base64url)
else
JSC.WebCore.Encoder.writeU8(str.slice().ptr, str.slice().len, buf.ptr, buf.len, JSC.Node.Encoding.base64url),
JSC.Node.Encoding.hex => if (str.is16Bit())
JSC.WebCore.Encoder.writeU16(str.utf16SliceAligned().ptr, str.utf16SliceAligned().len, buf.ptr, buf.len, JSC.Node.Encoding.hex)
else
JSC.WebCore.Encoder.writeU8(str.slice().ptr, str.slice().len, buf.ptr, buf.len, JSC.Node.Encoding.hex),
};
if (written <= 0) {
return;
}
var contents = buf[0..@intCast(usize, written)];
buf = buf[@intCast(usize, written)..];
if (contents.len == 1) {
@memset(buf.ptr, contents[0], buf.len);
return;
}
const minimum_contents = contents;
while (buf.len >= contents.len) {
const min_len = @minimum(contents.len, buf.len);
std.mem.copy(u8, buf[0..min_len], contents[0..min_len]);
if (buf.len <= contents.len) {
break;
}
buf = buf[min_len..];
contents.len *= 2;
}
while (buf.len > 0) {
const to_fill = @minimum(minimum_contents.len, buf.len);
std.mem.copy(u8, buf[0..to_fill], minimum_contents[0..to_fill]);
buf = buf[to_fill..];
}
}
};
comptime {
if (!JSC.is_bindgen) {
@export(BufferVectorized.fill, .{ .name = "Bun__Buffer_fill" });
}
}
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