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Commence à récupérer des champs dans un flux json

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Christian Zufferey
2019-03-04 14:40:37 +01:00
parent 1d75dfa3d6
commit c3a70d7b6b
1 changed files with 54 additions and 0 deletions
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Meteo/a_meteo3-tests.lua Normal file
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-- Juste un tests pour voir si j'arrive à réduire et extraire à la mano des data d'un un gros JSON
-- Source: https://github.com/nodemcu/nodemcu-firmware/blob/master/lua_examples/sjson-streaming.lua
print("\n a_meteo3-tests.lua zf190304.1431 \n")
function set_json()
zjson=[[
{"city_info":{"name":"Lausanne","country":"Suisse","latitude":"46.5194190","longitude":"6.6337000","elevation":"495","sunrise":"07:06","sunset":"18:24"},"forecast_info":{"latitude":null,"longitude":null,"elevation":"561.0"},"current_condition":{"date":"04.03.2019","hour":"10:00","tmp":6,"wnd_spd":39,"wnd_gust":64,"wnd_dir":"SO","pressure":1006.4,"humidity":96,"condition":"Averses de pluie faible","condition_key":"averses-de-pluie-faible","icon":"https:\/\/www.prevision-meteo.ch\/style\/images\/icon\/averses-de-pluie-faible.png","icon_big":"https:\/\/www.prevision-meteo.ch\/style\/images\/icon\/averses-de-pluie-faible-big.png"},"fcst_day_0":{"date":"04.03.2019","day_short":"Lun.","day_long":"Lundi","tmin":2,"tmax":8,"condition":"Averses de pluie faible","condition_key":"averses-de-pluie-faible","icon":"https:\/\/www.prevision-meteo.ch\/style\/images\/icon\/averses-de-pluie-faible.png","icon_big":"https:\/\/www.prevision-meteo.ch\/style\/images\/icon\/averses-de-pluie-faible-big.png","hourly_data":{"0H00":{"ICON":"https:\/\/www.prevision-meteo.ch\/style\/images\/icon\/nuit-nuageuse.png","CONDITION":"Nuit nuageuse","CONDITION_KEY":"nuit-nuageuse","TMP2m":3.2,"DPT2m":0.1,"WNDCHILL2m":-0.1,"HUMIDEX":null,"RH2m":80,"PRMSL":1010.3,"APCPsfc":0,"WNDSPD10m":13,"WNDGUST10m":26,"WNDDIR10m":235,"WNDDIRCARD10":"SO","ISSNOW":0,"HCDC":"0.00","MCDC":"33.30","LCDC":"0.00","HGT0C":2500,"KINDEX":41,"CAPE180_0":"0.000","CIN180_0":0},"1H00":{"ICON":"https:\/\/www.prevision-meteo.ch\/style\/images\/icon\/nuit-nuageuse.png","CONDITION":"Nuit nuageuse","CONDITION_KEY":"nuit-nuageuse","TMP2m":2.5,"DPT2m":-2.5,"WNDCHILL2m":-0.3,"HUMIDEX":null,"RH2m":70,"PRMSL":1009.3,"APCPsfc":0,"WNDSPD10m":10,"WNDGUST10m":20,"WNDDIR10m":229,"WNDDIRCARD10":"SO","ISSNOW":0,"HCDC":"0.00","MCDC":"100.00","LCDC":"0.00","HGT0C":2500,"KINDEX":39,"CAPE180_0":"0.000","CIN180_0":0},"2H00":{"ICON":"https:\/\/www.prevision-meteo.ch\/style\/images\/icon\/nuit-nuageuse.png","CONDITION":"Nuit nuageuse","CONDITION_KEY":"nuit-nuageuse","TMP2m":2.4,"DPT2m":-3.1,"WNDCHILL2m":-0.4,"HUMIDEX":null,"RH2m":67,"PRMSL":1008.3,"APCPsfc":0,"WNDSPD10m":10,"WNDGUST10m":17,"WNDDIR10m":221,"WNDDIRCARD10":"SO","ISSNOW":0,"HCDC":"18.70","MCDC":"100.00","LCDC":"0.00","HGT0C":2600,"KINDEX":40,"CAPE180_0":"0.000","CIN180_0":0},"3H00":{"ICON":"https:\/\/www.prevision-meteo.ch\/style\/images\/icon\/nuit-nuageuse.png","CONDITION":"Nuit nuageuse","CONDITION_KEY":"nuit-nuageuse","TMP2m":2.5,"DPT2m":-3.4,"WNDCHILL2m":-0.3,"HUMIDEX":null,"RH2m":65,"PRMSL":1007.1,"APCPsfc":0,"WNDSPD10m":10,"WNDGUST10m":16,"WNDDIR10m":221,"WNDDIRCARD10":"SO","ISSNOW":0,"HCDC":"100.00","MCDC":"99.70","LCDC":"0.00","HGT0C":2600,"KINDEX":40,"CAPE180_0":"0.000","CIN180_0":0},"4H00":{"ICON":"https:\/\/www.prevision-meteo.ch\/style\/images\/icon\/nuit-nuageuse.png","CONDITION":"Nuit nuageuse","CONDITION_KEY":"nuit-nuageuse","TMP2m":2.8,"DPT2m":-2.4,"WNDCHILL2m":-0.4,"HUMIDEX":null,"RH2m":69,"PRMSL":1006,"APCPsfc":0,"WNDSPD10m":12,"WNDGUST10m":19,"WNDDIR10m":233,"WNDDIRCARD10":"SO","ISSNOW":0,"HCDC":"100.00","MCDC":"100.00","LCDC":"0.00","HGT0C":2500,"KINDEX":36,"CAPE180_0":"0.000","CIN180_0":0},"5H00":{"ICON":"https:\/\/www.prevision-meteo.ch\/style\/images\/icon\/nuit-nuageuse.png","CONDITION":"Nuit nuageuse","CONDITION_KEY":"nuit-nuageuse","TMP2m":3.9,"DPT2m":0.2,"WNDCHILL2m":0.7,"HUMIDEX":null,"RH2m":77,"PRMSL":1004.2,"APCPsfc":0,"WNDSPD10m":13,"WNDGUST10m":20,"WNDDIR10m":241,"WNDDIRCARD10":"SO","ISSNOW":0,"HCDC":"100.00","MCDC":"100.00","LCDC":"0.00","HGT0C":2500,"KINDEX":33,"CAPE180_0":"0.000","CIN180_0":0},
]]
end
function zget_json_key()
print("len1: "..string.len(zjson))
zjson_key='"'..zh..'H00":{'
print("zjson_key: "..zjson_key)
p1=string.find(zjson, zjson_key)
print("p1: "..p1)
zjson=string.sub(zjson,p1)
print("zjson: ",zjson)
p1,p2=string.find(zjson, '"CONDITION_KEY":"')
print(p1,p2)
p3=string.find(zjson, '","',p2)
print(p3)
ztoto=string.sub(zjson,p2,p3)
print(ztoto)
print("len2: "..string.len(zjson))
end
set_json()
p1=string.find(zjson, [["hourly_data":{]])
print(p1)
zjson=string.sub(zjson,p1)
print(zjson)
print("\n\nc'est parti...\n\n")
--[[
set_json()
zh=1
zget_json_key()
zh=2
zget_json_key()
set_json()
zh=0
for i=0, 5 do
zget_json_key()
zh=zh+1
end
]]