thing
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.gitignore
vendored
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2
.gitignore
vendored
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@ -0,0 +1,2 @@
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zig-cache/
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./build.zig.zon
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39
src/main.zig
39
src/main.zig
@ -13,8 +13,10 @@ const COLUMN_EMAIL_SIZE = 255;
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const Row = struct { id: i16, username: [COLUMN_USERNAME_SIZE]u8, email: [COLUMN_EMAIL_SIZE]u8 };
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var Table: [8]Row = undefined;
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const StatementType = enum { INSERT, SELECT };
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const Statement = struct { type: StatementType, row_to_insert: Row };
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const Statement = struct { type: StatementType, data_to_insert: [*]anyopaque, data_inserted: usize = 0 };
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pub fn new_input_buffer() !*InputBuffer {
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const input_buffers = try allocator.alloc(InputBuffer, 1);
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@ -27,6 +29,14 @@ pub fn new_input_buffer() !*InputBuffer {
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}
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pub fn main() !void {
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// DEBUG: Temporary data before insert is implemented
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Table[0] = Row{ .id = 1, .username = undefined, .email = undefined };
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std.mem.copyForwards(u8, &Table[0].username, "example");
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std.mem.copyForwards(u8, &Table[0].email, "example@gml.com");
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// END DEBUG
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const input_buffer: *InputBuffer = try new_input_buffer();
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// defer std.heap.page_allocator.free(input_buffer);
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@ -60,6 +70,10 @@ pub fn main() !void {
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std.debug.print("Unrecognized keyword at start of {s}\n", .{command});
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continue;
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},
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PrepareResultError.SYNTAX_ERROR => {
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std.debug.print("Unrecognized syntax near {s}\n", .{command});
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continue;
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},
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}
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};
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@ -103,7 +117,12 @@ pub fn prepare_statement(input_buffer: InputBuffer, statement: *Statement) Prepa
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if (std.mem.eql(u8, input_buffer.buffer[0..6], "insert")) {
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statement.type = StatementType.INSERT;
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var data = std.mem.split(u8, input_buffer.buffer[7 .. input_buffer.buffer_length - 1], " ");
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while (data.next()) |field| {
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statement.data_to_insert[statement.data_inserted] = &field;
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statement.data_inserted += 1;
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}
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return;
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}
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@ -117,11 +136,19 @@ pub fn prepare_statement(input_buffer: InputBuffer, statement: *Statement) Prepa
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pub fn execute_statement(statement: *Statement) void {
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switch (statement.type) {
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StatementType.INSERT => {
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std.debug.print("Your insert command would go here\n", .{});
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},
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StatementType.INSERT => {},
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StatementType.SELECT => {
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std.debug.print("Your select command would go here\n", .{});
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select_all();
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},
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}
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}
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pub fn select_all() void {
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std.debug.print("id | username | email\n", .{});
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for (Table) |rowItem| {
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if (rowItem.id == 0) return;
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std.debug.print("{} {s} {s}\n", .{ rowItem.id, rowItem.username[0..], rowItem.email[0..] });
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}
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}
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pub fn insert() !void {}
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