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authorMartin Ashby <martin@ashbysoft.com>2023-09-26 06:51:06 +0100
committerMartin Ashby <martin@ashbysoft.com>2023-09-26 06:51:06 +0100
commit183d60a6e87230cc767c56900b94c9c694596de1 (patch)
treec08b473a293dc465989a09c5d681191898cf2c2f /src/copy_in_response.zig
parent02f9e99bfccad8837d327880f756ec7bab711783 (diff)
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Move protocol definitions into a subfolder
Diffstat (limited to 'src/copy_in_response.zig')
-rw-r--r--src/copy_in_response.zig83
1 files changed, 0 insertions, 83 deletions
diff --git a/src/copy_in_response.zig b/src/copy_in_response.zig
deleted file mode 100644
index f6ed84b..0000000
--- a/src/copy_in_response.zig
+++ /dev/null
@@ -1,83 +0,0 @@
-const std = @import("std");
-const log = std.log.scoped(.pgz);
-const ByteArrayList = std.ArrayList(u8);
-const ProtocolError = @import("main.zig").ProtocolError;
-const ClientError = @import("main.zig").ClientError;
-const enum_from_int = @import("main.zig").enum_from_int;
-const FormatCode = @import("main.zig").FormatCode;
-
-pub const Tag: u8 = 'G';
-// TODO generics it's the same as CopyOutResponse and CopyBothResponse.
-const CopyInResponse = @This();
-
-overall_format_code: u8,
-format_codes: []const FormatCode, // owned
-
-pub fn read(a: std.mem.Allocator, b: []const u8) !CopyInResponse {
- var fbs = std.io.fixedBufferStream(b);
- var reader = fbs.reader();
- const overall_format_code = try reader.readIntBig(u8);
- const n_columns = try reader.readIntBig(u16);
- var format_codes = try a.alloc(FormatCode, n_columns);
- errdefer a.free(format_codes);
- for (0..n_columns) |i| {
- const int_format_code = try reader.readIntBig(u16);
- format_codes[i] = enum_from_int(FormatCode, int_format_code) orelse return ProtocolError.InvalidFormatCode;
- }
- return .{
- .overall_format_code = overall_format_code,
- .format_codes = format_codes,
- };
-}
-
-pub fn write(self: CopyInResponse, a: std.mem.Allocator, stream_writer: anytype) !void {
- try stream_writer.writeIntBig(u8, Tag);
- var al = ByteArrayList.init(a);
- defer al.deinit();
- var cw = std.io.countingWriter(al.writer());
- var writer = cw.writer();
- try writer.writeIntBig(u32, 0); // length placeholder
- try writer.writeIntBig(u8, self.overall_format_code);
- try writer.writeIntBig(u16, @intCast(self.format_codes.len));
- for (self.format_codes) |format_code| {
- try writer.writeIntBig(u16, @intFromEnum(format_code));
- }
- std.mem.writeIntBig(u32, al.items[0..4], @as(u32, @intCast(cw.bytes_written))); // Update length
- try stream_writer.writeAll(al.items);
-}
-
-pub fn deinit(self: *CopyInResponse, a: std.mem.Allocator) void {
- a.free(self.format_codes);
-}
-
-test "round trip" {
- const allocator = std.testing.allocator;
- var format_codes = try allocator.alloc(FormatCode, 3);
- format_codes[0] = .Binary;
- format_codes[1] = .Binary;
- format_codes[2] = .Text;
- var sm = CopyInResponse{
- .overall_format_code = 1,
- .format_codes = format_codes,
- };
- defer sm.deinit(allocator);
-
- var bal = ByteArrayList.init(allocator);
- defer bal.deinit();
- try sm.write(allocator, bal.writer());
-
- var fbs = std.io.fixedBufferStream(bal.items);
- var reader = fbs.reader();
- const tag = try reader.readByte();
- try std.testing.expectEqual(Tag, tag);
- const len = try reader.readIntBig(u32);
- const buf = try allocator.alloc(u8, len - 4);
- defer allocator.free(buf);
- try reader.readNoEof(buf);
- var sm2 = try CopyInResponse.read(allocator, buf);
- defer sm2.deinit(allocator);
-
- try std.testing.expectEqual(FormatCode.Binary, sm2.format_codes[0]);
- try std.testing.expectEqual(FormatCode.Binary, sm2.format_codes[1]);
- try std.testing.expectEqual(FormatCode.Text, sm2.format_codes[2]);
-}