prosody
8d47858805c9
util/human/io.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Comparison

util/human/io.lua @ 10891:8d47858805c9

util.human.io: Add padleft, padright and a table printing function
author Matthew Wild <mwild1@gmail.com>
date Wed, 03 Jun 2020 22:21:17 +0100
parent 10872:a3f3f42736f2
child 10893:a256044c1d12
comparison
equal deleted inserted replaced
10890:a451f80d1cea 10891:8d47858805c9
83 83
84 local function printf(fmt, ...) 84 local function printf(fmt, ...)
85 print(fmt:format(...)); 85 print(fmt:format(...));
86 end 86 end
87 87
88 local function padright(s, width)
89 return s..string.rep(" ", width-#s);
90 end
91
92 local function padleft(s, width)
93 return string.rep(" ", width-#s)..s;
94 end
95
96 local function table(col_specs, max_width, padding)
97 max_width = max_width or 80;
98 padding = padding or 4;
99
100 local widths = {};
101 local total_width = max_width - padding;
102 local free_width = total_width;
103 -- Calculate width of fixed-size columns
104 for i = 1, #col_specs do
105 local width = col_specs[i].width or "0";
106 if not(type(width) == "string" and width:sub(-1) == "%") then
107 local title = col_specs[i].title;
108 width = math.max(tonumber(width), title and (#title+1) or 0);
109 widths[i] = width;
110 free_width = free_width - width;
111 end
112 end
113 -- Calculate width of %-based columns
114 for i = 1, #col_specs do
115 if not widths[i] then
116 local pc_width = tonumber((col_specs[i].width:gsub("%%$", "")));
117 widths[i] = math.floor(free_width*(pc_width/100));
118 end
119 end
120
121 return function (row, f)
122 for i, column in ipairs(col_specs) do
123 local width = widths[i];
124 local v = tostring(row[column.key or i] or ""):sub(1, width);
125 if #v < width then
126 if column.align == "right" then
127 v = padleft(v, width-1).." ";
128 else
129 v = padright(v, width);
130 end
131 end
132 (f or io.stdout):write(v);
133 end
134 (f or io.stdout):write("\n");
135 end;
136 end
137
88 return { 138 return {
89 getchar = getchar; 139 getchar = getchar;
90 getline = getline; 140 getline = getline;
91 getpass = getpass; 141 getpass = getpass;
92 show_yesno = show_yesno; 142 show_yesno = show_yesno;
93 read_password = read_password; 143 read_password = read_password;
94 show_prompt = show_prompt; 144 show_prompt = show_prompt;
95 printf = printf; 145 printf = printf;
146 padleft = padleft;
147 padright = padright;
148 table = table;
96 }; 149 };