Parse latitude and longitude CLI args

Changes

4 changed files (+83/-2)

• build.zig
  • @@ -69,6 +69,32 @@ pub fn build(b: *std.Build) void {
    } } + // "zig build test" + { + const step = b.step("test", "Run unit tests"); + + const t = b.addTest(.{ + .name = "unit_test", + .target = target, + .optimize = optimize, + .root_source_file = b.path("src/main.zig"), + }); + + t.linkLibC(); + t.addCSourceFiles(.{ + .files = &.{ + "src/print.c", + "src/sunriset.c", + "src/sunwait.c", + }, + }); + t.addIncludePath(b.path("src")); + t.root_module.addCMacro("SUNWAIT_NOMAIN", ""); + + const run = b.addRunArtifact(t); + step.dependOn(&run.step); + } + // "zig build behavior_test" { const step = b.step("behavior_test", "Run behavior matching tests");
• src/RunOptions.zig
  • @@ -190,9 +190,61 @@ fn parseArg(self: *@This(), arg: []const u8, args: *std.process.ArgIterator) Par
    return; } + if (parseSuffixedLatitude(arg)) |lat| { + self.latitude = lat; + return; + } + + if (parseSuffixedLongitude(arg)) |lon| { + self.longitude = lon; + return; + } + return ParseArgsError.UnknownArg; } + fn parseSuffixedLatitude(x: []const u8) ?f64 { + if (x.len <= 1) { + return null; + } + + const lastChar = x[x.len - 1]; + const value = std.fmt.parseFloat(f64, x[0 .. x.len - 1]) catch return null; + + return switch (lastChar) { + 'N' => value, + 'S' => -value, + else => null, + }; + } + + test parseSuffixedLatitude { + try std.testing.expectEqual(29.977435, parseSuffixedLatitude("29.977435N")); + try std.testing.expectEqual(-29.977435, parseSuffixedLatitude("29.977435S")); + try std.testing.expectEqual(null, parseSuffixedLatitude("29.977435W")); + } + + fn parseSuffixedLongitude(x: []const u8) ?f64 { + if (x.len <= 1) { + return null; + } + + const lastChar = x[x.len - 1]; + const value = std.fmt.parseFloat(f64, x[0 .. x.len - 1]) catch return null; + + return switch (lastChar) { + 'E' => value, + 'W' => -value, + else => null, + }; + } + + test parseSuffixedLongitude { + try std.testing.expectEqual(31.132484, parseSuffixedLongitude("31.132484E")); + try std.testing.expectEqual(-31.132484, parseSuffixedLongitude("31.132484W")); + try std.testing.expectEqual(null, parseSuffixedLongitude("31.132484N")); + } + pub fn toC(self: *const @This()) c.runStruct { return c.runStruct{ .latitude = self.latitude,
• src/main.zig
  • @@ -147,3 +147,7 @@ pub fn main() u8 {
    }, } } + + test { + _ = @import("./RunOptions.zig"); + }
• tests/poll.zig
  • @@ -60,8 +60,7 @@ test {
    const debug = try std.process.Child.run(.{ .allocator = std.testing.allocator, - // TODO: Put coordinate once "poll" accepts lat/lon arguments - .argv = &.{ config.new_bin, "--debug", "poll" }, + .argv = &.{ config.new_bin, "--debug", "poll", "29.977435N", "31.132484E" }, .env_map = &env, }); defer std.testing.allocator.free(debug.stderr);