Mercurial > prosody-hg

annotate util/jsonpointer.lua @ 12233:e4530bdbf5f3

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util.prosodyctl.check: Fix reset of libunbound before DNS checks Probably worked anyway but settings might not always have been applied depending on what order things happens in. Error was hidden by the pcall, which was sorta intentional...
author Kim Alvefur <zash@zash.se>
date Tue, 01 Feb 2022 14:46:42 +0100
parents b4c0efff8dd3
children 87c3d45208ef
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
12131
b4c0efff8dd3 util.jsonpointer: Resolve JSON Pointers per RFC 6901
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1 local function unescape_token(escaped_token)
b4c0efff8dd3 util.jsonpointer: Resolve JSON Pointers per RFC 6901
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2 local unescaped = escaped_token:gsub("~1", "/"):gsub("~0", "~")
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3 return unescaped
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4 end
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5
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6 local function resolve_json_pointer(ref, path)
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7 local ptr_len = #path + 1
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8 for part, pos in path:gmatch("/([^/]*)()") do
b4c0efff8dd3 util.jsonpointer: Resolve JSON Pointers per RFC 6901
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9 local token = unescape_token(part)
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10 if not (type(ref) == "table") then
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11 return nil
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12 end
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13 local idx = next(ref)
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14 local new_ref
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15
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16 if type(idx) == "string" then
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17 new_ref = ref[token]
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18 elseif math.type(idx) == "integer" then
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19 local i = tonumber(token)
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20 if token == "-" then
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21 i = #ref + 1
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22 end
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23 new_ref = ref[i]
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24 else
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25 return nil, "invalid-table"
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26 end
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27
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28 if pos == ptr_len then
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29 return new_ref
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30 elseif type(new_ref) == "table" then
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31 ref = new_ref
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32 elseif not (type(ref) == "table") then
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33 return nil, "invalid-path"
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34 end
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35
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36 end
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37 return ref
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38 end
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39
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40 return { resolve = resolve_json_pointer }