Mercurial > repo
annotate share/lua/5.2/luarocks/persist.lua @ 10659:a7309e28b481
<oerjan> forget pe
author | HackBot |
---|---|
date | Thu, 13 Apr 2017 04:02:14 +0000 |
parents | d137f631bad5 |
children |
rev | line source |
---|---|
1132
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
1 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
2 --- Utility module for loading files into tables and |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
3 -- saving tables into files. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
4 -- Implemented separately to avoid interdependencies, |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
5 -- as it is used in the bootstrapping stage of the cfg module. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
6 module("luarocks.persist", package.seeall) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
7 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
8 local util = require("luarocks.util") |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
9 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
10 --- Load a Lua file containing assignments, storing them in a table. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
11 -- The global environment is not propagated to the loaded file. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
12 -- @param filename string: the name of the file. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
13 -- @param tbl table or nil: if given, this table is used to store |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
14 -- loaded values. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
15 -- @return table or (nil, string): a table with the file's assignments |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
16 -- as fields, or nil and a message in case of errors. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
17 function load_into_table(filename, tbl) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
18 assert(type(filename) == "string") |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
19 assert(type(tbl) == "table" or not tbl) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
20 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
21 local result, chunk, ran, err |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
22 local result = tbl or {} |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
23 if setfenv then -- Lua 5.1 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
24 chunk, err = loadfile(filename) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
25 if chunk then |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
26 setfenv(chunk, result) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
27 ran, err = pcall(chunk) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
28 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
29 else -- Lua 5.2 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
30 chunk, err = loadfile(filename, "t", result) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
31 if chunk then |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
32 ran, err = pcall(chunk) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
33 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
34 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
35 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
36 if not chunk then |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
37 if err:sub(1,5) ~= filename:sub(1,5) then |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
38 return false, err |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
39 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
40 return nil, "Error loading file: "..err |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
41 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
42 if not ran then |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
43 return nil, "Error running file: "..err |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
44 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
45 return result |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
46 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
47 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
48 local write_table |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
49 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
50 --- Write a value as Lua code, invoking write_table. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
51 -- This function handles only numbers, strings and tables |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
52 -- are keys (tables are handled recursively). |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
53 -- @param out userdata: a file object, open for writing. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
54 -- @param v: the value to be written. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
55 -- @param level number: the indentation level |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
56 -- @param sub_order table: optional prioritization table |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
57 -- @see write_table |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
58 local function write_value(out, v, level, sub_order) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
59 if type(v) == "table" then |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
60 write_table(out, v, level + 1, sub_order) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
61 elseif type(v) == "string" then |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
62 if v:match("\n") then |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
63 local open, close = "[[", "]]" |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
64 local equals = 0 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
65 while v:find(open,1,true) or v:find(close,1,true) do |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
66 equals = equals + 1 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
67 local eqs = ("="):rep(equals) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
68 open, close = "["..eqs.."[", "]"..eqs.."]" |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
69 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
70 out:write(open.."\n"..v..close) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
71 else |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
72 out:write("\""..v:gsub("\"", "\\\"").."\"") |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
73 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
74 else |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
75 out:write(tostring(v)) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
76 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
77 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
78 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
79 --- Write a table as Lua code representing a table to disk |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
80 -- (that is, in curly brackets notation). |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
81 -- This function handles only numbers, strings and tables |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
82 -- are keys (tables are handled recursively). |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
83 -- @param out userdata: a file object, open for writing. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
84 -- @param tbl table: the table to be written. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
85 -- @param level number: the indentation level |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
86 -- @param field_order table: optional prioritization table |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
87 write_table = function(out, tbl, level, field_order) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
88 out:write("{") |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
89 local sep = "\n" |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
90 local indentation = " " |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
91 local indent = true |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
92 local i = 1 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
93 for k, v, sub_order in util.sortedpairs(tbl, field_order) do |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
94 out:write(sep) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
95 if indent then |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
96 for n = 1,level do out:write(indentation) end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
97 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
98 sep = ",\n" |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
99 indent = true |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
100 if type(k) == "number" then |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
101 if k ~= i then |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
102 out:write("["..tostring(k).."]=") |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
103 else |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
104 i = i + 1 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
105 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
106 indent = false |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
107 sep = ", " |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
108 elseif type(k) == "table" then |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
109 out:write("[") |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
110 write_table(out, k, level + 1) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
111 out:write("] = ") |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
112 else |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
113 if k:match("^[a-zA-Z_][a-zA-Z0-9_]*$") then |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
114 out:write(k.." = ") |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
115 else |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
116 out:write("['"..k:gsub("'", "\\'").."'] = ") |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
117 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
118 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
119 write_value(out, v, level, sub_order) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
120 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
121 if sep ~= "\n" then |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
122 out:write("\n") |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
123 for n = 1,level-1 do out:write(indentation) end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
124 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
125 out:write("}") |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
126 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
127 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
128 --- Writes a table to an io-like object. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
129 -- @param out userdata: a file object, open for writing. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
130 -- @param tbl table: the table to be written. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
131 -- @param field_order table: optional prioritization table |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
132 -- @return userdata The file object originally passed in as the `out` parameter. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
133 local function write_table(out, tbl, field_order) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
134 for k, v, sub_order in util.sortedpairs(tbl, field_order) do |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
135 out:write(k.." = ") |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
136 write_value(out, v, 0, sub_order) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
137 out:write("\n") |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
138 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
139 return out |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
140 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
141 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
142 --- Save the contents of a table to a string. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
143 -- Each element of the table is saved as a global assignment. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
144 -- Only numbers, strings and tables (containing numbers, strings |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
145 -- or other recursively processed tables) are supported. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
146 -- @param tbl table: the table containing the data to be written |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
147 -- @param field_order table: an optional array indicating the order of top-level fields. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
148 -- @return string |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
149 function save_from_table_to_string(tbl, field_order) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
150 local out = {buffer = {}} |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
151 function out:write(data) table.insert(self.buffer, data) end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
152 write_table(out, tbl, field_order) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
153 return table.concat(out.buffer) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
154 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
155 |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
156 --- Save the contents of a table in a file. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
157 -- Each element of the table is saved as a global assignment. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
158 -- Only numbers, strings and tables (containing numbers, strings |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
159 -- or other recursively processed tables) are supported. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
160 -- @param filename string: the output filename |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
161 -- @param tbl table: the table containing the data to be written |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
162 -- @param field_order table: an optional array indicating the order of top-level fields. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
163 -- @return boolean or (nil, string): true if successful, or nil and a |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
164 -- message in case of errors. |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
165 function save_from_table(filename, tbl, field_order) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
166 local out = io.open(filename, "w") |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
167 if not out then |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
168 return nil, "Cannot create file at "..filename |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
169 end |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
170 write_table(out, tbl, field_order) |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
171 out:close() |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
172 return true |
d137f631bad5
<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
HackBot
parents:
diff
changeset
|
173 end |