Mercurial > prosody-hg

annotate util/jsonpointer.lua @ 13946:f5e8ab42c708

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mod_http_file_share: Check that files are still there with correct size Failed uploads can leave behind unused slots. Files shouldn't change size after they have been successfully uploaded, but might as well double check it.
author Kim Alvefur <zash@zash.se>
date Sat, 04 Dec 2021 18:56:51 +0100
parents b713da7527d2
children
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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 }