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// Copyright (c) 2019-2021 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
module http
import net.urllib
const (
max_redirects = 4
content_type_default = 'text/plain'
bufsize = 1536
)
// FetchConfig holds configurations of fetch
pub struct FetchConfig {
pub mut:
url string
method Method
header Header
data string
params map[string]string
cookies map[string]string
user_agent string = 'v.http'
verbose bool
}
pub fn new_request(method Method, url_ string, data string) ?Request {
url := if method == .get { url_ + '?' + data } else { url_ }
// println('new req() method=$method url="$url" dta="$data"')
return Request{
method: method
url: url
data: data
/*
headers: {
'Accept-Encoding': 'compress'
}
*/
}
}
// get sends a GET HTTP request to the URL
pub fn get(url string) ?Response {
return fetch(method: .get, url: url)
}
// post sends a POST HTTP request to the URL with a string data
pub fn post(url string, data string) ?Response {
return fetch(
method: .post
url: url
data: data
header: new_header(key: .content_type, value: http.content_type_default)
)
}
// post_json sends a POST HTTP request to the URL with a JSON data
pub fn post_json(url string, data string) ?Response {
return fetch(
method: .post
url: url
data: data
header: new_header(key: .content_type, value: 'application/json')
)
}
// post_form sends a POST HTTP request to the URL with X-WWW-FORM-URLENCODED data
pub fn post_form(url string, data map[string]string) ?Response {
return fetch(
method: .post
url: url
header: new_header(key: .content_type, value: 'application/x-www-form-urlencoded')
data: url_encode_form_data(data)
)
}
// put sends a PUT HTTP request to the URL with a string data
pub fn put(url string, data string) ?Response {
return fetch(
method: .put
url: url
data: data
header: new_header(key: .content_type, value: http.content_type_default)
)
}
// patch sends a PATCH HTTP request to the URL with a string data
pub fn patch(url string, data string) ?Response {
return fetch(
method: .patch
url: url
data: data
header: new_header(key: .content_type, value: http.content_type_default)
)
}
// head sends a HEAD HTTP request to the URL
pub fn head(url string) ?Response {
return fetch(method: .head, url: url)
}
// delete sends a DELETE HTTP request to the URL
pub fn delete(url string) ?Response {
return fetch(method: .delete, url: url)
}
// fetch sends an HTTP request to the URL with the given method and configurations
pub fn fetch(config FetchConfig) ?Response {
if config.url == '' {
return error('http.fetch: empty url')
}
url := build_url_from_fetch(config) or { return error('http.fetch: invalid url $config.url') }
req := Request{
method: config.method
url: url
data: config.data
header: config.header
cookies: config.cookies
user_agent: config.user_agent
user_ptr: 0
verbose: config.verbose
}
res := req.do() ?
return res
}
// get_text sends a GET HTTP request to the URL and returns the text content of the response
pub fn get_text(url string) string {
resp := fetch(url: url, method: .get) or { return '' }
return resp.text
}
// url_encode_form_data converts mapped data to an URL encoded string
pub fn url_encode_form_data(data map[string]string) string {
mut pieces := []string{}
for key_, value_ in data {
key := urllib.query_escape(key_)
value := urllib.query_escape(value_)
pieces << '$key=$value'
}
return pieces.join('&')
}
[deprecated: 'use fetch()']
fn fetch_with_method(method Method, _config FetchConfig) ?Response {
mut config := _config
config.method = method
return fetch(config)
}
fn build_url_from_fetch(config FetchConfig) ?string {
mut url := urllib.parse(config.url) ?
if config.params.len == 0 {
return url.str()
}
mut pieces := []string{cap: config.params.len}
for key, val in config.params {
pieces << '$key=$val'
}
mut query := pieces.join('&')
if url.raw_query.len > 1 {
query = url.raw_query + '&' + query
}
url.raw_query = query
return url.str()
}
// unescape_url is deprecated, use urllib.query_unescape() instead
pub fn unescape_url(s string) string {
panic('http.unescape_url() was replaced with urllib.query_unescape()')
}
// escape_url is deprecated, use urllib.query_escape() instead
pub fn escape_url(s string) string {
panic('http.escape_url() was replaced with urllib.query_escape()')
}
// unescape is deprecated, use urllib.query_escape() instead
pub fn unescape(s string) string {
panic('http.unescape() was replaced with http.unescape_url()')
}
// escape is deprecated, use urllib.query_unescape() instead
pub fn escape(s string) string {
panic('http.escape() was replaced with http.escape_url()')
}
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