tiny.smg.command.diff

1const std = @import("std");23const smg = @import("../root.zig");4const diff = smg.diff;5const graph_mod = smg.graph;6const cli_options = smg.cli.options;7const cli_output = smg.cli.output;8const cli_session = smg.command.session;9const cli_validation = smg.cli.validation;1011pub fn run(allocator: std.mem.Allocator, phases: std.mem.Allocator, args: []const []const u8, limits: smg.Limits, boundary: cli_session.PhaseBoundary) !u8 {12    if (try cli_validation.rejectMissingOptionValues(allocator, args, &.{"--format"})) return 2;13    if (try cli_validation.rejectUnexpectedOptionsPlain(allocator, "diff", "[OPTIONS] [REF]", args, &.{"--format"})) return 2;14    if (try cli_validation.rejectInvalidChoiceOption(allocator, "diff", "[OPTIONS] [REF]", args, "--format", &.{ "text", "json" })) return 2;15    const pos = try cli_options.positional(allocator, args);16    if (pos.len > 1) {17        try cli_output.writeClickUsageError(allocator, "diff", "[OPTIONS] [REF]", try cli_validation.unexpectedArgumentMessage(allocator, pos[1..]));18        return 2;19    }20    const loaded = try cli_session.loadRead(allocator, phases, limits, boundary);21    defer boundary.beginTeardown();22    const root = loaded[0];23    const graph = loaded[1];24    const ref = if (pos.len == 0) "HEAD" else pos[0];25    var invalid = false;26    const old_graph_optional = try diff.loadGraphFromGit(allocator, root, ref, &invalid, limits);27    if (invalid) {28        try cli_output.writeErrFmt(allocator, "Error: invalid git ref: {s}\n", .{ref});29        return 2;30    }31    const old_missing = old_graph_optional == null;32    const old_graph = old_graph_optional orelse graph_mod.init(allocator);33    const result = try diff.graphs(allocator, old_graph, graph, true);34    if (cli_options.hasJson(args)) return try cli_output.writeOut(try diff.toJson(allocator, result, ref));35    return try cli_output.writeOut(try diff.toText(allocator, result, ref, old_missing));36}

1pub const diff = @import("diff.zig");