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annotate util/jsonpointer.lua @ 14024:f65302ea37b0 13.0 13.0.3

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mod_limits: Allow configuration of general 's2s' limit, and have s2sout inherit from s2sin Most people don't currently have a limit set for s2sout, as usually such sessions don't have significant incoming traffic. However, having limits in place is still sensible, especially with the rising use of bidi. The goal here is to switch people to a general 's2s' limit, which s2sin and s2sout both inherit from. Due to the widespread existence of 's2sin' in existing configurations, s2sout will inherit from that unless explicitly set.
author Matthew Wild <mwild1@gmail.com>
date Mon, 05 Jan 2026 11:35:32 +0000
parents 22066b02887f
children b713da7527d2
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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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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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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 }