Initial work, and name change to pantograph

1 files changed, 59 insertions, 0 deletions

diff --git a/src/main.zig b/src/main.zig
new file mode 100644
index 0000000..1356bdc
--- /dev/null
+++ b/src/main.zig
@@ -0,0 +1,59 @@
+const std = @import("std");
+const libpanto = @import("libpanto");
+
+pub fn main() !void {
+    const config = libpanto.config.Config.fromEnv() catch |err| switch (err) {
+        error.MissingApiKey => {
+            std.debug.print("panto: PANTO_API_KEY environment variable is required\n", .{});
+            return;
+        },
+    };
+
+    var debug_allocator = std.heap.DebugAllocator(.{}).init;
+    defer _ = debug_allocator.deinit();
+    const alloc = debug_allocator.allocator();
+
+    var conv = libpanto.conversation.Conversation.init(alloc);
+    defer conv.deinit();
+
+    try conv.addSystemMessage("You are a helpful assistant.");
+
+    const io = std.Io.Threaded.global_single_threaded.io();
+
+    var stdout_buffer: [4096]u8 = undefined;
+    var stdout_file = std.Io.File.stdout().writer(io, &stdout_buffer);
+    const stdout = &stdout_file.interface;
+
+    var stdin_buffer: [4096]u8 = undefined;
+    var stdin_file = std.Io.File.stdin().reader(io, &stdin_buffer);
+    const stdin = &stdin_file.interface;
+
+    try stdout.print("panto — model: {s}\n> ", .{config.model});
+    try stdout_file.flush();
+
+    while (true) {
+        const line = stdin.takeDelimiter('\n') catch |err| {
+            std.debug.print("Read error: {}\n", .{err});
+            return;
+        };
+        if (line) |text| {
+            if (text.len == 0) {
+                try stdout.print("> ", .{});
+                try stdout_file.flush();
+                continue;
+            }
+            // Copy the line since the reader buffer may be reused
+            const owned = try alloc.dupe(u8, text);
+            defer alloc.free(owned);
+            try conv.addUserMessage(owned);
+            // TODO: call agent.runStep() once provider is implemented
+            try stdout.print("(streaming not yet implemented)\n> ", .{});
+            try stdout_file.flush();
+        } else {
+            // EOF (Ctrl+D)
+            try stdout.print("\n", .{});
+            try stdout_file.flush();
+            break;
+        }
+    }
+}