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annotate util/jsonpointer.lua @ 13929:203a0b5ade55

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util.startup: Add Lua 5.5 GC defaults ~$ lua5.5 Lua 5.5.0 Copyright (C) 1994-2025 Lua.org, PUC-Rio > collectgarbage("param", "minormul") 20 > collectgarbage("param", "majorminor") 50 > collectgarbage("param", "minormajor") 68
author Kim Alvefur <zash@zash.se>
date Wed, 06 Aug 2025 16:48:35 +0200
parents b713da7527d2
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 -- This file is generated from teal-src/prosody/util/jsonpointer.tl
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2 local function unescape_token(escaped_token)
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3 local unescaped = escaped_token:gsub("~1", "/"):gsub("~0", "~")
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4 return unescaped
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5 end
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6
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7 local function resolve_json_pointer(ref, path)
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8 local ptr_len = #path + 1
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9 for part, pos in path:gmatch("/([^/]*)()") do
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10 local token = unescape_token(part)
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11 if not (type(ref) == "table") then
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12 return nil
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13 end
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14 local idx = next(ref)
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15 local new_ref
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16
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17 if type(idx) == "string" then
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18 new_ref = ref[token]
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19 elseif math.type(idx) == "integer" then
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20 local i = tonumber(token)
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21 if token == "-" then
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22 i = #(ref) + 1
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23 end
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24 new_ref = ref[i + 1]
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25 else
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26 return nil, "invalid-table"
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27 end
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28
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29 if pos == ptr_len then
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30 return new_ref
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31 elseif type(new_ref) == "table" then
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32 ref = new_ref
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33 elseif not (type(ref) == "table") then
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34 return nil, "invalid-path"
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35 end
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36
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37 end
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38 return ref
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39 end
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40
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41 return { resolve = resolve_json_pointer }