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v/vlib/vweb/parse.v

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module vweb
import net.urllib
import net.http
// Parsing function attributes for methods and path.
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fn parse_attrs(name string, attrs []string) !([]http.Method, string, string, string) {
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if attrs.len == 0 {
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return [http.Method.get], '/${name}', '', ''
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}
mut x := attrs.clone()
mut methods := []http.Method{}
mut middleware := ''
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mut path := ''
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mut host := ''
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for i := 0; i < x.len; {
attr := x[i]
attru := attr.to_upper()
m := http.method_from_str(attru)
if attru == 'GET' || m != .get {
methods << m
x.delete(i)
continue
}
if attr.starts_with('/') {
if path != '' {
return http.MultiplePathAttributesError{}
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}
path = attr
x.delete(i)
continue
}
if attr.starts_with('middleware:') {
middleware = attr.all_after('middleware:').trim_space()
x.delete(i)
continue
}
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if attr.starts_with('host:') {
host = attr.all_after('host:').trim_space()
x.delete(i)
continue
}
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i++
}
if x.len > 0 {
return http.UnexpectedExtraAttributeError{
attributes: x
}
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}
if methods.len == 0 {
methods = [http.Method.get]
}
if path == '' {
path = '/${name}'
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}
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// Make path and host lowercase for case-insensitive comparisons
return methods, path.to_lower(), middleware, host.to_lower()
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}
fn parse_query_from_url(url urllib.URL) map[string]string {
mut query := map[string]string{}
for qvalue in url.query().data {
query[qvalue.key] = qvalue.value
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}
return query
}
const boundary_start = 'boundary='
fn parse_form_from_request(request http.Request) !(map[string]string, map[string][]http.FileData) {
if request.method !in [http.Method.post, .put, .patch] {
return map[string]string{}, map[string][]http.FileData{}
}
ct := request.header.get(.content_type) or { '' }.split(';').map(it.trim_left(' \t'))
if 'multipart/form-data' in ct {
boundaries := ct.filter(it.starts_with(vweb.boundary_start))
if boundaries.len != 1 {
return error('detected more that one form-data boundary')
}
boundary := boundaries[0].all_after(vweb.boundary_start)
if boundary.len > 0 && boundary[0] == `"` {
// quotes are send by our http.post_multipart_form/2:
return http.parse_multipart_form(request.data, boundary.trim('"'))
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}
// Firefox and other browsers, do not use quotes around the boundary:
return http.parse_multipart_form(request.data, boundary)
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}
return http.parse_form(request.data), map[string][]http.FileData{}
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}