prosody
033ea8b46d6a
util/human/io.lua

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util/human/io.lua @ 13144:033ea8b46d6a

mod_storage_sql: Compose a keyval+ store out of keyval and map store methods Removes the need for the shim in storagemanager. The methods only really access the 'store' property of the first (self) argument, so this is safe.
author Kim Alvefur <zash@zash.se>
date Sat, 10 Jun 2023 16:39:48 +0200
parent 13068:7a75cbc4d87c
child 13199:278920294dfe
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 local array = require "prosody.util.array";
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2 local utf8 = rawget(_G, "utf8") or require"prosody.util.encodings".utf8;
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3 local len = utf8.len or function(s)
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4 local _, count = s:gsub("[%z\001-\127\194-\253][\128-\191]*", "");
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5 return count;
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6 end;
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7
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8 local function getchar(n)
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9 local stty_ret = os.execute("stty raw -echo 2>/dev/null");
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10 local ok, char;
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11 if stty_ret then
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12 ok, char = pcall(io.read, n or 1);
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13 os.execute("stty sane");
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14 else
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15 ok, char = pcall(io.read, "*l");
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16 if ok then
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17 char = char:sub(1, n or 1);
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18 end
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19 end
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20 if ok then
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21 return char;
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22 end
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23 end
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24
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25 local function getline()
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26 local ok, line = pcall(io.read, "*l");
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27 if ok then
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28 return line;
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29 end
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30 end
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31
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32 local function getpass()
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33 local stty_ret = os.execute("stty -echo 2>/dev/null");
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34 if not stty_ret then
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35 io.write("\027[08m"); -- ANSI 'hidden' text attribute
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36 end
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37 local ok, pass = pcall(io.read, "*l");
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38 if stty_ret then
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39 os.execute("stty sane");
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40 else
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41 io.write("\027[00m");
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42 end
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43 io.write("\n");
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44 if ok then
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45 return pass;
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46 end
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47 end
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48
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49 local function show_yesno(prompt)
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50 io.write(prompt, " ");
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51 local choice = getchar():lower();
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52 io.write("\n");
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53 if not choice:match("%a") then
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54 choice = prompt:match("%[.-(%U).-%]$");
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55 if not choice then return nil; end
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56 end
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57 return (choice == "y");
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58 end
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59
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60 local function read_password()
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61 local password;
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62 while true do
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63 io.write("Enter new password: ");
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64 password = getpass();
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65 if not password then
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66 print("No password - cancelled");
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67 return;
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68 end
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69 io.write("Retype new password: ");
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70 if getpass() ~= password then
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71 if not show_yesno [=[Passwords did not match, try again? [Y/n]]=] then
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72 return;
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73 end
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74 else
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75 break;
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76 end
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77 end
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78 return password;
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79 end
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80
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81 local function show_prompt(prompt)
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82 io.write(prompt, " ");
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83 local line = getline();
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84 line = line and line:gsub("\n$","");
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85 return (line and #line > 0) and line or nil;
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86 end
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87
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88 local function printf(fmt, ...)
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89 print(fmt:format(...));
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90 end
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91
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92 local function padright(s, width)
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93 return s..string.rep(" ", width-len(s));
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94 end
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95
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96 local function padleft(s, width)
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97 return string.rep(" ", width-len(s))..s;
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98 end
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99
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100 local pat = "[%z\001-\127\194-\253][\128-\191]*";
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101 local function utf8_cut(s, pos)
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102 return s:match("^"..pat:rep(pos)) or s;
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103 end
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104
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105 if utf8.len and utf8.offset then
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106 function utf8_cut(s, pos)
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107 return s:sub(1, utf8.offset(s, pos+1)-1);
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108 end
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109 end
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110
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111 local function term_width(default)
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112 local env_cols = tonumber(os.getenv "COLUMNS");
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113 if env_cols then return env_cols; end
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114 local stty = io.popen("stty -a");
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115 if not stty then return default; end
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116 local result = stty:read("*a");
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117 if result then
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118 result = result:match("%f[%w]columns[ =]*(%d+)");
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119 end
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120 stty:close();
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121 return tonumber(result or default);
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122 end
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123
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124 local function ellipsis(s, width)
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125 if len(s) <= width then return s; end
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126 if width <= 1 then return "…"; end
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127 return utf8_cut(s, width - 1) .. "…";
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128 end
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129
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130 local function new_table(col_specs, max_width)
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131 max_width = max_width or term_width(80);
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132 local separator = " | ";
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133
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134 local widths = {};
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135 local total_width = max_width - #separator * (#col_specs-1);
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136 local free_width = total_width;
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137 -- Calculate width of fixed-size columns
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Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
138 for i = 1, #col_specs do
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
139 local width = col_specs[i].width or "0";
13030
1f89a2a9f532 util.human.io: Support for dynamic "proportional" columns
Matthew Wild <mwild1@gmail.com>
parents: 12975
diff changeset
140 if not (type(width) == "string" and width:match("[p%%]$")) then
10891
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
141 local title = col_specs[i].title;
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
142 width = math.max(tonumber(width), title and (#title+1) or 0);
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
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parents: 10872
diff changeset
143 widths[i] = width;
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
144 free_width = free_width - width;
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
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145 end
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
146 end
13030
1f89a2a9f532 util.human.io: Support for dynamic "proportional" columns
Matthew Wild <mwild1@gmail.com>
parents: 12975
diff changeset
147
1f89a2a9f532 util.human.io: Support for dynamic "proportional" columns
Matthew Wild <mwild1@gmail.com>
parents: 12975
diff changeset
148 -- Calculate width of proportional columns
1f89a2a9f532 util.human.io: Support for dynamic "proportional" columns
Matthew Wild <mwild1@gmail.com>
parents: 12975
diff changeset
149 local total_proportional_width = 0;
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8d47858805c9 util.human.io: Add padleft, padright and a table printing function
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parents: 10872
diff changeset
150 for i = 1, #col_specs do
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
151 if not widths[i] then
13031
1023c3faffac util.human.io: Fix pattern to support fractional proportions
Matthew Wild <mwild1@gmail.com>
parents: 13030
diff changeset
152 local width_spec = col_specs[i].width:match("([%d%.]+)[p%%]");
13030
1f89a2a9f532 util.human.io: Support for dynamic "proportional" columns
Matthew Wild <mwild1@gmail.com>
parents: 12975
diff changeset
153 total_proportional_width = total_proportional_width + tonumber(width_spec);
1f89a2a9f532 util.human.io: Support for dynamic "proportional" columns
Matthew Wild <mwild1@gmail.com>
parents: 12975
diff changeset
154 end
1f89a2a9f532 util.human.io: Support for dynamic "proportional" columns
Matthew Wild <mwild1@gmail.com>
parents: 12975
diff changeset
155 end
1f89a2a9f532 util.human.io: Support for dynamic "proportional" columns
Matthew Wild <mwild1@gmail.com>
parents: 12975
diff changeset
156
1f89a2a9f532 util.human.io: Support for dynamic "proportional" columns
Matthew Wild <mwild1@gmail.com>
parents: 12975
diff changeset
157 for i = 1, #col_specs do
1f89a2a9f532 util.human.io: Support for dynamic "proportional" columns
Matthew Wild <mwild1@gmail.com>
parents: 12975
diff changeset
158 if not widths[i] then
13031
1023c3faffac util.human.io: Fix pattern to support fractional proportions
Matthew Wild <mwild1@gmail.com>
parents: 13030
diff changeset
159 local width_spec = col_specs[i].width:match("([%d%.]+)[p%%]");
13030
1f89a2a9f532 util.human.io: Support for dynamic "proportional" columns
Matthew Wild <mwild1@gmail.com>
parents: 12975
diff changeset
160 local rel_width = tonumber(width_spec);
1f89a2a9f532 util.human.io: Support for dynamic "proportional" columns
Matthew Wild <mwild1@gmail.com>
parents: 12975
diff changeset
161 widths[i] = math.floor(free_width*(rel_width/total_proportional_width));
10891
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
162 end
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
163 end
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
164
10893
a256044c1d12 util.human.io: table: switch row function to simply returning prepared row string
Matthew Wild <mwild1@gmail.com>
parents: 10891
diff changeset
165 return function (row)
10896
c7a0eab27165 util.human.io: table: Fix title printing when columns use named keys
Matthew Wild <mwild1@gmail.com>
parents: 10894
diff changeset
166 local titles;
10894
d15a4284fdf8 util.human.io: table: Return title row when no row data passed
Matthew Wild <mwild1@gmail.com>
parents: 10893
diff changeset
167 if not row then
10896
c7a0eab27165 util.human.io: table: Fix title printing when columns use named keys
Matthew Wild <mwild1@gmail.com>
parents: 10894
diff changeset
168 titles, row = true, array.pluck(col_specs, "title", "");
10894
d15a4284fdf8 util.human.io: table: Return title row when no row data passed
Matthew Wild <mwild1@gmail.com>
parents: 10893
diff changeset
169 end
10893
a256044c1d12 util.human.io: table: switch row function to simply returning prepared row string
Matthew Wild <mwild1@gmail.com>
parents: 10891
diff changeset
170 local output = {};
10891
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
171 for i, column in ipairs(col_specs) do
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
172 local width = widths[i];
11892
e712133b4de1 util.human.io: Pass nil to cell mapper to signal missing value
Kim Alvefur <zash@zash.se>
parents: 10917
diff changeset
173 local v = row[not titles and column.key or i];
e712133b4de1 util.human.io: Pass nil to cell mapper to signal missing value
Kim Alvefur <zash@zash.se>
parents: 10917
diff changeset
174 if not titles and column.mapper then
13040
0cbe400ebab4 util.human.io: Pass the whole column definition to mapper function
Kim Alvefur <zash@zash.se>
parents: 13039
diff changeset
175 v = column.mapper(v, row, width, column);
11892
e712133b4de1 util.human.io: Pass nil to cell mapper to signal missing value
Kim Alvefur <zash@zash.se>
parents: 10917
diff changeset
176 end
e712133b4de1 util.human.io: Pass nil to cell mapper to signal missing value
Kim Alvefur <zash@zash.se>
parents: 10917
diff changeset
177 if v == nil then
11893
afef1e170de7 util.human.io: Support specifying column defaults in tables
Kim Alvefur <zash@zash.se>
parents: 11892
diff changeset
178 v = column.default or "";
11892
e712133b4de1 util.human.io: Pass nil to cell mapper to signal missing value
Kim Alvefur <zash@zash.se>
parents: 10917
diff changeset
179 else
e712133b4de1 util.human.io: Pass nil to cell mapper to signal missing value
Kim Alvefur <zash@zash.se>
parents: 10917
diff changeset
180 v = tostring(v);
e712133b4de1 util.human.io: Pass nil to cell mapper to signal missing value
Kim Alvefur <zash@zash.se>
parents: 10917
diff changeset
181 end
11896
93e9f7ae2f9b util.human.io: Fix cutting of UTF-8 into pieces
Kim Alvefur <zash@zash.se>
parents: 11895
diff changeset
182 if len(v) < width then
10891
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
183 if column.align == "right" then
10917
1eb83bc6f706 util.human.io: Fix right-alignment
Kim Alvefur <zash@zash.se>
parents: 10911
diff changeset
184 v = padleft(v, width);
10891
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
185 else
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
186 v = padright(v, width);
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
187 end
11896
93e9f7ae2f9b util.human.io: Fix cutting of UTF-8 into pieces
Kim Alvefur <zash@zash.se>
parents: 11895
diff changeset
188 elseif len(v) > width then
13039
9ddb344b9fab util.human.io: Allow defining per column ellipsis function
Kim Alvefur <zash@zash.se>
parents: 13038
diff changeset
189 v = (column.ellipsis or ellipsis)(v, width);
10891
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
190 end
10893
a256044c1d12 util.human.io: table: switch row function to simply returning prepared row string
Matthew Wild <mwild1@gmail.com>
parents: 10891
diff changeset
191 table.insert(output, v);
10891
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
192 end
10907
6af28c756752 util.human.io: Draw a separator between columns
Kim Alvefur <zash@zash.se>
parents: 10904
diff changeset
193 return table.concat(output, separator);
13048
946442df65d3 util.human.io: table: Return determined width as a second result
Matthew Wild <mwild1@gmail.com>
parents: 13047
diff changeset
194 end, max_width;
10891
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
195 end
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
196
13054
f4d7fe919969 util.human.io: Add parse_duration() method to parse a duration string
Matthew Wild <mwild1@gmail.com>
parents: 13051
diff changeset
197 local day = 86400;
f4d7fe919969 util.human.io: Add parse_duration() method to parse a duration string
Matthew Wild <mwild1@gmail.com>
parents: 13051
diff changeset
198 local multipliers = {
f4d7fe919969 util.human.io: Add parse_duration() method to parse a duration string
Matthew Wild <mwild1@gmail.com>
parents: 13051
diff changeset
199 d = day, w = day * 7, m = 31 * day, mo = 31 * day, y = 365.2425 * day;
f4d7fe919969 util.human.io: Add parse_duration() method to parse a duration string
Matthew Wild <mwild1@gmail.com>
parents: 13051
diff changeset
200 s = 1, mi = 60, h = 3600
f4d7fe919969 util.human.io: Add parse_duration() method to parse a duration string
Matthew Wild <mwild1@gmail.com>
parents: 13051
diff changeset
201 };
f4d7fe919969 util.human.io: Add parse_duration() method to parse a duration string
Matthew Wild <mwild1@gmail.com>
parents: 13051
diff changeset
202 local function parse_duration(duration_string)
f4d7fe919969 util.human.io: Add parse_duration() method to parse a duration string
Matthew Wild <mwild1@gmail.com>
parents: 13051
diff changeset
203 local n, m = duration_string:lower():match("(%d+)%s*([dwmy]?.?)");
f4d7fe919969 util.human.io: Add parse_duration() method to parse a duration string
Matthew Wild <mwild1@gmail.com>
parents: 13051
diff changeset
204 if not n then return nil; end
f4d7fe919969 util.human.io: Add parse_duration() method to parse a duration string
Matthew Wild <mwild1@gmail.com>
parents: 13051
diff changeset
205 return tonumber(n) * ( multipliers[m] or 1 );
f4d7fe919969 util.human.io: Add parse_duration() method to parse a duration string
Matthew Wild <mwild1@gmail.com>
parents: 13051
diff changeset
206 end
f4d7fe919969 util.human.io: Add parse_duration() method to parse a duration string
Matthew Wild <mwild1@gmail.com>
parents: 13051
diff changeset
207
10870
3f1889608f3e util.human.io: New central place for UI helpers
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
208 return {
3f1889608f3e util.human.io: New central place for UI helpers
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
209 getchar = getchar;
3f1889608f3e util.human.io: New central place for UI helpers
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
210 getline = getline;
3f1889608f3e util.human.io: New central place for UI helpers
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
211 getpass = getpass;
3f1889608f3e util.human.io: New central place for UI helpers
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
212 show_yesno = show_yesno;
3f1889608f3e util.human.io: New central place for UI helpers
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
213 read_password = read_password;
3f1889608f3e util.human.io: New central place for UI helpers
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
214 show_prompt = show_prompt;
3f1889608f3e util.human.io: New central place for UI helpers
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
215 printf = printf;
10891
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
216 padleft = padleft;
8d47858805c9 util.human.io: Add padleft, padright and a table printing function
Matthew Wild <mwild1@gmail.com>
parents: 10872
diff changeset
217 padright = padright;
13044
5bd272095388 util.human.io: Add term_width() method to discover the terminal width
Matthew Wild <mwild1@gmail.com>
parents: 13040
diff changeset
218 term_width = term_width;
11894
57106c61d104 util.human.io: Factor out ellipsis function
Kim Alvefur <zash@zash.se>
parents: 11893
diff changeset
219 ellipsis = ellipsis;
10893
a256044c1d12 util.human.io: table: switch row function to simply returning prepared row string
Matthew Wild <mwild1@gmail.com>
parents: 10891
diff changeset
220 table = new_table;
13054
f4d7fe919969 util.human.io: Add parse_duration() method to parse a duration string
Matthew Wild <mwild1@gmail.com>
parents: 13051
diff changeset
221 parse_duration = parse_duration;
10870
3f1889608f3e util.human.io: New central place for UI helpers
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
222 };