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docs: add rivertile man page

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This commit is contained in:
Isaac Freund
2020-06-16 17:06:24 +02:00
parent e2c034b76a
commit 751760287c
3 changed files with 59 additions and 6 deletions
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26
rivertile/main.zig
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@ -45,13 +45,17 @@ const Orientation = enum {
/// | | |
/// +-----------------------+------------+
pub fn main() !void {
const args = std.os.argv;
if (args.len != 7) printUsageAndExit();
// first arg must be left, right, top, or bottom
const master_location = std.meta.stringToEnum(Orientation, std.mem.spanZ(std.os.argv[1])).?;
const master_location = std.meta.stringToEnum(Orientation, std.mem.spanZ(args[1])) orelse
printUsageAndExit();
// the other 5 are passed by river and described in river-layouts(7)
const num_views = try std.fmt.parseInt(u32, std.mem.spanZ(std.os.argv[2]), 10);
const master_count = try std.fmt.parseInt(u32, std.mem.spanZ(std.os.argv[3]), 10);
const master_factor = try std.fmt.parseFloat(f64, std.mem.spanZ(std.os.argv[4]));
const num_views = try std.fmt.parseInt(u32, std.mem.spanZ(args[2]), 10);
const master_count = try std.fmt.parseInt(u32, std.mem.spanZ(args[3]), 10);
const master_factor = try std.fmt.parseFloat(f64, std.mem.spanZ(args[4]));
const width_arg: u32 = switch (master_location) {
.left, .right => 5,
@ -59,8 +63,8 @@ pub fn main() !void {
};
const height_arg: u32 = if (width_arg == 5) 6 else 5;
const output_width = try std.fmt.parseInt(u32, std.mem.spanZ(std.os.argv[width_arg]), 10);
const output_height = try std.fmt.parseInt(u32, std.mem.spanZ(std.os.argv[height_arg]), 10);
const output_width = try std.fmt.parseInt(u32, std.mem.spanZ(args[width_arg]), 10);
const output_height = try std.fmt.parseInt(u32, std.mem.spanZ(args[height_arg]), 10);
const secondary_count = num_views - master_count;
@ -126,3 +130,13 @@ pub fn main() !void {
try stdout_buf.flush();
}
fn printUsageAndExit() noreturn {
const usage: []const u8 =
\\Usage: rivertile left|right|top|bottom [args passed by river]
\\
;
std.debug.warn(usage, .{});
std.os.exit(1);
}