From f5c4671bfbad96bf346bd7e9a21fc4317b4959df Mon Sep 17 00:00:00 2001 From: Indrajith K L Date: Sat, 3 Dec 2022 17:00:20 +0530 Subject: Adds most of the tools --- v_windows/v/old/examples/get_weather/README.md | 23 +++++++++ v_windows/v/old/examples/get_weather/get_weather.v | 55 ++++++++++++++++++++++ 2 files changed, 78 insertions(+) create mode 100644 v_windows/v/old/examples/get_weather/README.md create mode 100644 v_windows/v/old/examples/get_weather/get_weather.v (limited to 'v_windows/v/old/examples/get_weather') diff --git a/v_windows/v/old/examples/get_weather/README.md b/v_windows/v/old/examples/get_weather/README.md new file mode 100644 index 0000000..be2695d --- /dev/null +++ b/v_windows/v/old/examples/get_weather/README.md @@ -0,0 +1,23 @@ +# get_weather +get_weather is a very simple web crawler. +Its goal is to get a weather forecast from caiyunapp.com. + +# Compile and Run + +Use this to generate an executable and then launch the web crawler. +```bash +v get_weather.v +./get_weather +``` + +As a convenience, you can also compile and launch the web crawler directly. +```bash +v run get_weather.v +``` + +In this project we use http.fetch() to get a http.Response, with a +custom user-agent and then we use json.decode() to decode the json +response to struct. +We also use a `[skip]` attribute to skip certain fields in the response, +that we don't need and use a `[json: result]` attribute to specify that +our struct field is named differently from the incoming json response. diff --git a/v_windows/v/old/examples/get_weather/get_weather.v b/v_windows/v/old/examples/get_weather/get_weather.v new file mode 100644 index 0000000..3156590 --- /dev/null +++ b/v_windows/v/old/examples/get_weather/get_weather.v @@ -0,0 +1,55 @@ +import json +import rand +import net.http + +struct Weather { + status string [skip] // drop this field + api_version string [skip] + api_status string [skip] + lang string [skip] + unit string [skip] + tzshift int [skip] + timezone string [skip] + server_time u32 [skip] + location []f32 [skip] + result Result //[json: result] if the field name is different in JSON, it can be specified +} + +struct Result { + realtime Realtime [skip] + minutely Minutely [skip] + hourly Hourly [skip] + daily Daily [skip] + primary int [skip] + forecast_keypoint string +} + +struct Realtime {} + +struct Minutely {} + +struct Hourly {} + +struct Daily {} + +fn main() { + config := http.FetchConfig{ + user_agent: 'Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:88.0) Gecko/20100101 Firefox/88.0' + } + + rnd := rand.f32() + url := 'https://api.caiyunapp.com/v2.5/96Ly7wgKGq6FhllM/116.391912,40.010711/weather.jsonp?hourlysteps=120&random=$rnd' + // println(url) + + resp := http.fetch(url, config) or { + println('failed to fetch data from the server') + return + } + + weather := json.decode(Weather, resp.text) or { + println('failed to decode weather json') + return + } + + println('未来两小时天气:\n${weather.result.forecast_keypoint}.') +} -- cgit v1.2.3