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comparison util/human/io.lua @ 13210:8dbe693ded6b

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util.human.io: Fix stray 'stty' error by only querying width of real ttys This adds a dependency on a binary and *nix-specific module but then stty is probably *nix-specific anyway so maybe that's fine.
author Kim Alvefur <zash@zash.se>
date Sun, 16 Jul 2023 21:21:37 +0200
parents 278920294dfe
children 82513890a1d8
comparison
equal deleted inserted replaced
13209:c8d949cf6b09 13210:8dbe693ded6b
1 local array = require "prosody.util.array"; 1 local array = require "prosody.util.array";
2 local pposix = require "prosody.util.pposix";
2 local utf8 = rawget(_G, "utf8") or require"prosody.util.encodings".utf8; 3 local utf8 = rawget(_G, "utf8") or require"prosody.util.encodings".utf8;
3 local len = utf8.len or function(s) 4 local len = utf8.len or function(s)
4 local _, count = s:gsub("[%z\001-\127\194-\253][\128-\191]*", ""); 5 local _, count = s:gsub("[%z\001-\127\194-\253][\128-\191]*", "");
5 return count; 6 return count;
6 end; 7 end;
109 end 110 end
110 111
111 local function term_width(default) 112 local function term_width(default)
112 local env_cols = tonumber(os.getenv "COLUMNS"); 113 local env_cols = tonumber(os.getenv "COLUMNS");
113 if env_cols then return env_cols; end 114 if env_cols then return env_cols; end
115 if not pposix.isatty(io.stdout) then
116 return default;
117 end
114 local stty = io.popen("stty -a"); 118 local stty = io.popen("stty -a");
115 if not stty then return default; end 119 if not stty then return default; end
116 local result = stty:read("*a"); 120 local result = stty:read("*a");
117 if result then 121 if result then
118 result = result:match("%f[%w]columns[ =]*(%d+)"); 122 result = result:match("%f[%w]columns[ =]*(%d+)");