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//! Fish completions.
const std = @import("std");
const Config = @import("../config/Config.zig");
const Action = @import("../cli.zig").ghostty.Action;
const help_strings = @import("help_strings");
/// A fish completions configuration that contains all the available commands
/// and options.
pub const completions = comptimeGenerateCompletions();
fn comptimeGenerateCompletions() []const u8 {
comptime {
@setEvalBranchQuota(50000);
var counter: std.Io.Writer.Discarding = .init(&.{});
try writeCompletions(&counter.writer);
var buf: [counter.count]u8 = undefined;
var writer: std.Io.Writer = .fixed(&buf);
try writeCompletions(&writer);
const final = buf;
return final[0..writer.end];
}
}
fn writeCompletions(writer: *std.Io.Writer) !void {
{
try writer.writeAll("set -l commands \"");
var count: usize = 0;
for (@typeInfo(Action).@"enum".fields) |field| {
if (count > 0) try writer.writeAll(" ");
try writer.writeAll("+");
try writer.writeAll(field.name);
count += 1;
}
try writer.writeAll("\"\n");
}
try writer.writeAll("complete -c ghostty -f\n");
try writer.writeAll("complete -c ghostty -s e -l help -f\n");
try writer.writeAll("complete -c ghostty -n \"not __fish_seen_subcommand_from $commands\" -l version -f\n");
for (@typeInfo(Config).@"struct".fields) |field| {
if (field.name[0] == '_') continue;
try writer.writeAll("complete -c ghostty -n \"not __fish_seen_subcommand_from $commands\" -l ");
try writer.writeAll(field.name);
try writer.writeAll(if (field.type != bool) " -r" else " ");
if (std.mem.startsWith(u8, field.name, "font-family"))
try writer.writeAll(" -f -a \"(ghostty +list-fonts | grep '^[A-Z]')\"")
else if (std.mem.eql(u8, "theme", field.name))
try writer.writeAll(" -f -a \"(ghostty +list-themes | sed -E 's/^(.*) \\(.*\\$/\\1/')\"")
else if (std.mem.eql(u8, "working-directory", field.name))
try writer.writeAll(" -f -k -a \"(__fish_complete_directories)\"")
else {
try writer.writeAll(if (field.type != Config.RepeatablePath) " -f" else " -F");
switch (@typeInfo(field.type)) {
.bool => {},
.@"enum" => |info| {
try writer.writeAll(" -a \"");
for (info.fields, 0..) |f, i| {
if (i > 0) try writer.writeAll(" ");
try writer.writeAll(f.name);
}
try writer.writeAll("\"");
},
.@"struct" => |info| {
if (!@hasDecl(field.type, "parseCLI") and info.layout == .@"packed") {
try writer.writeAll(" -a \"");
for (info.fields, 0..) |f, i| {
if (i > 0) try writer.writeAll(" ");
try writer.writeAll(f.name);
try writer.writeAll(" no-");
try writer.writeAll(f.name);
}
try writer.writeAll("\"");
}
},
else => {},
}
}
if (@hasDecl(help_strings.Config, field.name)) {
const help = @field(help_strings.Config, field.name);
const desc = getDescription(help);
try writer.writeAll(" -d \"");
try writer.writeAll(desc);
try writer.writeAll("\"");
}
try writer.writeAll("\n");
}
{
try writer.writeAll("complete -c ghostty -n \"string match -q -- '+*' (commandline -pt)\" -f -a \"");
var count: usize = 0;
for (@typeInfo(Action).@"enum".fields) |field| {
if (count > 0) try writer.writeAll(" ");
try writer.writeAll("+");
try writer.writeAll(field.name);
count += 1;
}
try writer.writeAll("\"\n");
}
for (@typeInfo(Action).@"enum".fields) |field| {
if (std.mem.eql(u8, "help", field.name)) continue;
if (std.mem.eql(u8, "version", field.name)) continue;
const options = @field(Action, field.name).options();
for (@typeInfo(options).@"struct".fields) |opt| {
if (opt.name[0] == '_') continue;
try writer.writeAll("complete -c ghostty -n \"__fish_seen_subcommand_from +" ++ field.name ++ "\" -l ");
try writer.writeAll(opt.name);
try writer.writeAll(if (opt.type != bool) " -r" else "");
// special case +validate_config --config-file
if (std.mem.eql(u8, "config-file", opt.name)) {
try writer.writeAll(" -F");
} else try writer.writeAll(" -f");
switch (@typeInfo(opt.type)) {
.bool => {},
.@"enum" => |info| {
try writer.writeAll(" -a \"");
for (info.fields, 0..) |f, i| {
if (i > 0) try writer.writeAll(" ");
try writer.writeAll(f.name);
}
try writer.writeAll("\"");
},
.optional => |optional| {
switch (@typeInfo(optional.child)) {
.@"enum" => |info| {
try writer.writeAll(" -a \"");
for (info.fields, 0..) |f, i| {
if (i > 0) try writer.writeAll(" ");
try writer.writeAll(f.name);
}
try writer.writeAll("\"");
},
else => {},
}
},
else => {},
}
try writer.writeAll("\n");
}
}
}
fn getDescription(comptime help: []const u8) []const u8 {
var out: [help.len * 2]u8 = undefined;
var len: usize = 0;
var prev_was_space = false;
for (help, 0..) |c, i| {
switch (c) {
'.' => {
out[len] = '.';
len += 1;
if (i + 1 >= help.len) break;
const next = help[i + 1];
if (next == ' ' or next == '\n') break;
},
'\n' => {
if (!prev_was_space and len > 0) {
out[len] = ' ';
len += 1;
prev_was_space = true;
}
},
'"' => {
out[len] = '\\';
out[len + 1] = '"';
len += 2;
prev_was_space = false;
},
else => {
out[len] = c;
len += 1;
prev_was_space = (c == ' ');
},
}
}
return out[0..len];
}
test "getDescription" {
const testing = std.testing;
const input = "First sentence with \"quotes\"\nand newlines. Second sentence.";
const expected = "First sentence with \\\"quotes\\\" and newlines.";
comptime {
const result = getDescription(input);
try testing.expectEqualStrings(expected, result);
}
}
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