net,vweb: reduce allocations by ~80%

CHANGELOG.md

@@ -1,3 +1,59 @@
+## V 0.4.3
+*10 November 2023*
+
+#### Improvements in the language
+- Remove additional line breaks after call_expr before params struct args (#19795)
+
+#### Breaking changes
+
+#### Checker improvements/fixes
+- Fix comptime enumdata value property access (#19768)
+- Fix `field ?&Type` without default value (#19786)
+- Avoid nil assign to option var (#19746)
+
+#### Parser improvements
+- ast: add missing docstrings for the public fns in vlib/v/ast/types.v (#19752)
+- parser: give a friendly error when misusing if over $if (#19810)
+- Add multiple struct attributes error for new attribute syntax
+
+#### Compiler internals
+- transformer: fix using a constant, instead of a fn parameter with the same name (fix #19766) (#19773)
+
+#### Standard library
+- vlib: add an `encoding.xml` module with parser, validation, entity encoding, unit tests (#19708)
+- os: implement os.fd_is_pending/1, os.Process.pipe_read/1, os.Process.is_pending/1 (#19787)
+- builtin: copy min/max integer values consts from `math` to builtin so that the entire math module doesn't have to be imported(#19809)
+
+#### Web
+- flag,json,net: handle C calls in .v files (part of enabling `-W impure-v` as default) (#19779)
+- net.http: add socks5|http(s) proxy support [Linux] (#19676)
+
+#### ORM
+
+#### Database drivers
+
+#### Native backend
+
+#### C backend
+- Only generate free in wrapper for spawn and not go (#19780)
+- Fix g.obf_table data missing(fix #19695) (#19778)
+- Fix closure variable in smartcast (#19796)
+
+#### Tools
+- tools: fix resolving external dependencies in vpm, add test (#19772)
+- tools: cleanup and simplify vcreate, for upcoming fixes and features (#19794)
+- tools: improve error messages, add color coding and debug logging (#19781)
+- tools: fix `v build-tools`, make `v test` more robust (#19803)
+- tools: add parse_query to vpm (#19814)
+- ci: add macos arm64 binary release (#19823)
+- Require the presence of a `v.mod` file, to install external urls via vpm (#19825)
+
+#### Operating System support
+
+#### Examples
+- tests: workaround name conflict, causing false positives with msvc on windows, when both tests were executed at the same time (locked executable)
+
+
 ## V 0.4.2
 *30 September 2023*
 

cmd/tools/changelog_helper.v

@@ -21,6 +21,23 @@ enum Category {
 	examples
 }
 
+/*
+#### Improvements in the language
+#### Breaking changes
+#### Checker improvements/fixes
+#### Parser improvements
+#### Compiler internals
+#### Standard library
+#### Web
+#### ORM
+#### Database drivers
+#### Native backend
+#### C backend
+#### Tools
+#### Operating System support
+#### Examples
+*/
+
 struct Line {
 	category Category
 	text     string
@@ -37,6 +54,8 @@ mut:
 fn main() {
 	if !os.exists(log_txt) {
 		os.execute(git_log_cmd + ' > ' + log_txt)
+		println('log.txt generated, remove unnecessary commits from it and run the tool again')
+		return
 	}
 	lines := os.read_lines(log_txt)!
 	changelog_txt := os.read_file('CHANGELOG.md')!.to_lower()

vlib/builtin/string.v

@@ -1048,6 +1048,20 @@ pub fn (s string) substr(start int, _end int) string {
 	return res
 }
 
+// substr_unsafe works like substr(), but doesn't copy (allocate) the substring
+[direct_array_access]
+pub fn (s string) substr_unsafe(start int, _end int) string {
+	end := if _end == 2147483647 { s.len } else { _end } // max_int
+	len := end - start
+	if len == s.len {
+		return s
+	}
+	return string{
+		str: unsafe { s.str + start }
+		len: len
+	}
+}
+
 // version of `substr()` that is used in `a[start..end] or {`
 // return an error when the index is out of range
 [direct_array_access]

vlib/net/http/cookie.v

@@ -59,8 +59,9 @@ pub fn read_set_cookies(h map[string][]string) []&Cookie {
 // returns the successfully parsed Cookies.
 //
 // if `filter` isn't empty, only cookies of that name are returned
-pub fn read_cookies(h map[string][]string, filter string) []&Cookie {
-	lines := h['Cookie']
+pub fn read_cookies(h Header, filter string) []&Cookie {
+	// lines := h['Cookie']
+	lines := h.values(.cookie) // or {
 	if lines.len == 0 {
 		return []
 	}