diagram: add program to generate various visual representations of the simulation trace

diagram/main.zig

@@ -0,0 +1,53 @@
+const std = @import("std");
+
+const strace = @import("strace.zig");
+const timeline_html  = @import("timeline_html.zig");
+const timeline_ascii = @import("timeline_ascii.zig");
+
+pub fn main(init: std.process.Init) !void {
+
+    var args = init.minimal.args.iterate();
+    _ = args.next(); // Skip first
+
+    const diagram_name = args.next() orelse {
+        std.debug.print("Missing diagram name\n", .{});
+        return;
+    };
+
+    const input_file = args.next() orelse "simulation.log";
+
+    if (std.mem.eql(u8, diagram_name, "strace")) {
+
+        const output_file = args.next() orelse "strace.txt";
+        strace.renderFile(init.io, init.gpa, input_file, output_file) catch |e| {
+            if (e != error.FileNotFound)
+                return e;
+            std.debug.print("File {s} not found\n", .{input_file});
+            return;
+        };
+
+    } else if (std.mem.eql(u8, diagram_name, "timeline_html")) {
+
+        const output_file = args.next() orelse "timeline.html";
+        timeline_html.renderFile(init.io, init.gpa, input_file, output_file) catch |e| {
+            if (e != error.FileNotFound)
+                return e;
+            std.debug.print("File {s} not found\n", .{input_file});
+            return;
+        };
+
+    } else if (std.mem.eql(u8, diagram_name, "timeline_ascii")) {
+
+        const output_file = args.next() orelse "timeline.txt";
+        timeline_ascii.renderFile(init.io, init.gpa, input_file, output_file, 1) catch |e| {
+            if (e != error.FileNotFound)
+                return e;
+            std.debug.print("File {s} not found\n", .{input_file});
+            return;
+        };
+
+    } else {
+
+        std.debug.print("Invalid diagram name\n", .{});
+    }
+}