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Merge pull request #1703 from mitchellh/terminfo
terminfo: for XTGETTCAP, non-parameterized string values return encoded
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@ -81,17 +81,39 @@ pub fn xtgettcapMap(comptime self: Source) type {
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kvs[1] = .{ "Co", "256" };
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kvs[2] = .{ "RGB", "8" };
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for (self.capabilities, 3..) |cap, i| {
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kvs[i] = .{ cap.name, switch (cap.value) {
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.canceled => @compileError("canceled not handled yet"),
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.boolean => "",
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.string => |v| v,
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.numeric => |v| numeric: {
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var buf: [10]u8 = undefined;
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const num_len = std.fmt.formatIntBuf(&buf, v, 10, .upper, .{});
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const final = buf;
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break :numeric final[0..num_len];
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kvs[i] = .{
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cap.name, switch (cap.value) {
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.canceled => @compileError("canceled not handled yet"),
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.boolean => "",
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.string => |v| string: {
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@setEvalBranchQuota(100_000);
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// If a string contains parameters, then we do not escape
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// anything within the string. I BELIEVE the history here is
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// xterm initially only supported specific capabilities and none
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// had parameters so it returned the tcap encoded form. Later,
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// Kitty added support for more capabilities some of which
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// have parameters. But Kitty returned them in terminfo source
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// format. So we need to handle both cases.
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if (std.mem.indexOfScalar(u8, v, '%') != null) break :string v;
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// No-parameters. Encode and return.
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// First replace \E with the escape char (0x1B)
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var result = comptimeReplace(v, "\\E", "\x1b");
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// Replace '^' with the control char version of that char.
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while (std.mem.indexOfScalar(u8, result, '^')) |idx| {
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if (idx > 0) @compileError("handle control-char in middle of string");
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const c = result[idx + 1];
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result = comptimeReplace(result, result[idx .. idx + 2], &.{c - 64});
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}
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break :string result;
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},
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.numeric => |v| numeric: {
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var buf: [10]u8 = undefined;
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const num_len = std.fmt.formatIntBuf(&buf, v, 10, .upper, .{});
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const final = buf;
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break :numeric final[0..num_len];
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},
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},
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} };
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};
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}
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// Now go through and convert them all to hex-encoded strings.
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@ -123,6 +145,22 @@ fn hexencode(comptime input: []const u8) []const u8 {
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return comptime &(std.fmt.bytesToHex(input, .upper));
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}
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/// std.mem.replace but comptime-only so we can return the string
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/// allocated in comptime memory.
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fn comptimeReplace(
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input: []const u8,
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needle: []const u8,
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replacement: []const u8,
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) []const u8 {
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comptime {
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const len = std.mem.replacementSize(u8, input, needle, replacement);
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var buf: [len]u8 = undefined;
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_ = std.mem.replace(u8, input, needle, replacement, &buf);
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const final = buf;
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return &final;
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}
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}
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test "xtgettcap map" {
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const testing = std.testing;
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@ -136,6 +174,8 @@ test "xtgettcap map" {
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.capabilities = &.{
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.{ .name = "am", .value = .{ .boolean = {} } },
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.{ .name = "colors", .value = .{ .numeric = 256 } },
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.{ .name = "kbs", .value = .{ .string = "^H" } },
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.{ .name = "kf1", .value = .{ .string = "\\EOP" } },
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.{ .name = "Smulx", .value = .{ .string = "\\E[4:%p1%dm" } },
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},
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};
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@ -145,6 +185,14 @@ test "xtgettcap map" {
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"\x1bP1+r616D\x1b\\",
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map.get(hexencode("am")).?,
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);
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try testing.expectEqualStrings(
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"\x1bP1+r6B6273=08\x1b\\",
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map.get(hexencode("kbs")).?,
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);
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try testing.expectEqualStrings(
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"\x1bP1+r6B6631=1B4F50\x1b\\",
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map.get(hexencode("kf1")).?,
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);
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try testing.expectEqualStrings(
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"\x1bP1+r536D756C78=5C455B343A25703125646D\x1b\\",
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map.get(hexencode("Smulx")).?,
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@ -304,7 +304,7 @@ pub const ghostty: Source = .{
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.{ .name = "kUP5", .value = .{ .string = "\\E[1;5A" } },
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.{ .name = "kUP6", .value = .{ .string = "\\E[1;6A" } },
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.{ .name = "kUP7", .value = .{ .string = "\\E[1;7A" } },
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.{ .name = "kbs", .value = .{ .string = "^?" } },
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.{ .name = "kbs", .value = .{ .string = "^H" } },
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.{ .name = "kcbt", .value = .{ .string = "\\E[Z" } },
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.{ .name = "kcub1", .value = .{ .string = "\\EOD" } },
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.{ .name = "kcud1", .value = .{ .string = "\\EOB" } },
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