diff options
| -rw-r--r-- | edconf.lua | 103 |
1 files changed, 100 insertions, 3 deletions
@@ -14,6 +14,75 @@ function vis_set(option, value) vis:command("set " .. option .. " " .. value) end +function set_pre_save(f, value) + if value == "true" then + vis.events.subscribe(vis.events.FILE_SAVE_PRE, f) + else + vis.events.unsubscribe(vis.events.FILE_SAVE_PRE, f) + end +end + +function set_file_open(f, value) + if value == "true" then + vis.events.subscribe(vis.events.FILE_OPEN, f) + else + vis.events.unsubscribe(vis.events.FILE_OPEN, f) + end +end + +-- Custom functionality +function insert_final_newline(file, path) + if file:content(file.size-1, file.size) ~= '\n' then + file:insert(file.size, '\n') + end +end + +function trim_trailing_whitespace(file, path) + for i=1, #file.lines do + if string.match(file.lines[i], '[ \t]$') then + file.lines[i] = string.gsub(file.lines[i], '[ \t]*$', '') + end + end +end + +function enforce_crlf_eol(file, path) + for i=1, #file.lines do + if not string.match(file.lines[i], '\r$') then + file.lines[i] = string.gsub(file.lines[i], '$', '\r') + end + end +end + +function enforce_lf_eol(file, path) + for i=1, #file.lines do + if string.match(file.lines[i], '\r$') then + file.lines[i] = string.gsub(file.lines[i], '\r$', '') + end + end +end + +global_max_line_length = 80 -- This is ugly, but we do want to use + -- single function that we can register + -- or unregister as needed +function max_line_length(file, path) + local overlong_lines = {} + for i=1, #file.lines do + if string.len(file.lines[i]) > global_max_line_length then + table.insert(overlong_lines, i) + end + end + if #overlong_lines > 0 then + local lines_are = (function(x) + if x>1 then return "lines are" else return "line is" end + end)(#overlong_lines) + vis:info(string.format( + "%d %s longer than %d characters: %s", + #overlong_lines, lines_are, global_max_line_length, + table.concat(overlong_lines, ",") + )) + end +end + OPTIONS = { indent_style = function (value) vis_set("expandtab", (value == "space")) @@ -29,11 +98,39 @@ OPTIONS = { vis_set("tabwidth", value) end, + insert_final_newline = function (value) + set_pre_save(insert_final_newline, value) + end, + + trim_trailing_whitespace = function (value) + set_pre_save(trim_trailing_whitespace, value) + end, + + -- End of line is only partially implemented. While vis does not + -- support customized newlines, it does work well enough with crlf + -- newlines. Therefore, setting end_of_line=crlf will just ensure + -- that there is a cr at the end of each line. Setting end_of_line=lf + -- will strip any cr characters at the end of lines. This hopefully + -- eases the pain of working with crlf files a little. + end_of_line = function (value) + set_pre_save(enforce_crlf_eol, tostring(value == "crlf")) + set_pre_save(enforce_lf_eol, tostring(value == "lf")) + end, + + -- There is probably no straightforward way to enforce a maximum line + -- length across different programming languages. If a maximum line + -- length is set, we can at least issue a warning, however. + max_line_length = function(value) + if value ~= "off" then + global_max_line_length = tonumber(value) + end + set_pre_save(max_line_length, tostring(value ~= "off")) + end, + -- Not supported by vis - -- end_of_line -- charset - -- trim_trailing_whitespace - -- insert_final_newline + -- Partial support + -- end_of_line -- max_line_length } |