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const std = @import("std");
const global = @import("../global.zig");
const ShellEscapeWriter = @import("shell.zig").ShellEscapeWriter;
const log = std.log.scoped(.os_edit);
const Options = struct {
default_editor: enum {
/// Return an error if $EDITOR or $VISUAL is not defined.
failure,
/// Default to "vi" if $EDITOR or $VISUAL is not defined.
vi,
/// Default to "nano" if $EDITOR or $VISUAL is not defined.
nano,
} = .vi,
pub const default: Options = .{};
};
pub const Error = error{NoEditorConfigured};
pub fn getConfigEditCommand(alloc: std.mem.Allocator, path: []const u8, options: Options) (Error || std.Io.Writer.Error || std.mem.Allocator.Error)![:0]const u8 {
const editor: []const u8 = editor: {
// VISUAL vs. EDITOR: https://unix.stackexchange.com/questions/4859/visual-vs-editor-what-s-the-difference
v: {
if (global.environ().containsUnempty(alloc, "VISUAL") catch break :v) {
break :editor global.environ().getAlloc(alloc, "VISUAL") catch break :v;
}
}
e: {
if (global.environ().containsUnempty(alloc, "EDITOR") catch break :e) {
break :editor global.environ().getAlloc(alloc, "EDITOR") catch break :e;
}
}
switch (options.default_editor) {
.failure => {
log.warn("$EDITOR or $VISUAL must be set to open config in a new window", .{});
return error.NoEditorConfigured;
},
.vi => {
log.warn("$EDITOR or $VISUAL not set, falling back to vi", .{});
break :editor try alloc.dupe(u8, "vi");
},
.nano => {
log.warn("$EDITOR or $VISUAL not set, falling back to nano", .{});
break :editor try alloc.dupe(u8, "nano");
},
}
};
defer alloc.free(editor);
var buffer: std.Io.Writer.Allocating = .init(alloc);
defer buffer.deinit();
const writer = &buffer.writer;
try writer.writeAll(editor);
try writer.writeByte(' ');
{
var sh: ShellEscapeWriter = .init(writer);
try sh.writer.writeAll(path);
try sh.writer.flush();
}
try writer.flush();
return try buffer.toOwnedSliceSentinel(0);
}
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