prosody
9e6ede86d35d
util/jsonpointer.lua

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util/jsonpointer.lua @ 13150:9e6ede86d35d

mod_storage_sql: Do not keep track of quota when no quota is set No point in doing this expensive O(n) query if the result is not used for anything. Will still cache the total item count if an explicit query for this is performed, then try to keep it updated with new items added. Will likely forget eventually tho.
author Kim Alvefur <zash@zash.se>
date Sun, 11 Jun 2023 20:05:32 +0200
parent 12781:22066b02887f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
12781
22066b02887f util.startup: Provide a common Lua 5.3+ math.type() for Lua 5.2
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1 local m_type = math.type;
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03e307952816 util.jsonpointer: Fix Lua <5.3 compat
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2
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b4c0efff8dd3 util.jsonpointer: Resolve JSON Pointers per RFC 6901
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3 local function unescape_token(escaped_token)
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4 local unescaped = escaped_token:gsub("~1", "/"):gsub("~0", "~")
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5 return unescaped
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6 end
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7
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8 local function resolve_json_pointer(ref, path)
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9 local ptr_len = #path + 1
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10 for part, pos in path:gmatch("/([^/]*)()") do
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11 local token = unescape_token(part)
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12 if not (type(ref) == "table") then
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13 return nil
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14 end
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15 local idx = next(ref)
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16 local new_ref
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17
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18 if type(idx) == "string" then
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19 new_ref = ref[token]
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03e307952816 util.jsonpointer: Fix Lua <5.3 compat
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20 elseif m_type(idx) == "integer" then
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21 local i = tonumber(token)
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22 if token == "-" then
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23 i = #ref + 1
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24 end
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87c3d45208ef util.jsonpointer: Fix off-by-one in array resolution
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25 new_ref = ref[i + 1]
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26 else
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27 return nil, "invalid-table"
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28 end
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29
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30 if pos == ptr_len then
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31 return new_ref
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32 elseif type(new_ref) == "table" then
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33 ref = new_ref
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34 elseif not (type(ref) == "table") then
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35 return nil, "invalid-path"
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36 end
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37
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38 end
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39 return ref
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40 end
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41
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42 return { resolve = resolve_json_pointer }