the base

lib/core/pathlib/path_extend.v

@@ -0,0 +1,95 @@
+module pathlib
+
+// join parts to a path and return path, returns a new path, create if needed
+pub fn (mut p Path) extend_dir_create(parts ...string) !Path {
+	mut out := p.path
+	if !p.is_dir() {
+		return error('Cannot only extend a dir.')
+	}
+	if p.exists() == false {
+		return error("Cannot extend a dir if it doesn't exist")
+	}
+	for part in parts {
+		if part.contains('~') {
+			return error('cannot extend part ${part} if ~ in')
+		}
+		part2 := part.trim(' ')
+		out += '/' + part2.trim('/')
+	}
+	out = out.replace('//', '/')
+	mut p2 := get_dir(path: out, create: true)!
+	return p2
+}
+
+// only works for a dir
+pub fn (mut p Path) extend_file(name string) !Path {
+	if !p.is_dir() {
+		return error('Cannot only extend a dir.')
+	}
+	if p.exists() == false {
+		return error("Cannot extend a dir if it doesn't exist")
+	}
+
+	mut out := p.path
+	if name.contains('~') {
+		return error('cannot extend dir if ~ in name: ${name}')
+	}
+	out += '/' + name.trim('/')
+	out = out.replace('//', '/')
+	mut p2 := get_file(path: out)!
+	return p2
+}
+
+// extend the path, path stays same, no return
+// if dir, needs to stay dir
+// anything else fails
+pub fn (mut path Path) extend(parts ...string) ! {
+	if !path.is_dir() {
+		return error('can only extend dir, ${path}')
+	}
+	for part in parts {
+		if part.contains('~') {
+			return error('cannot extend part to ${part} if ~ in')
+		}
+		part2 := part.trim(' ')
+		path.path += '/' + part2
+	}
+	if path.exists() {
+		if !path.is_dir() {
+			return error('can only extend dir if is dir again.')
+		}
+	}
+	path.path = path.path.replace('//', '/')
+	path.check()
+}
+
+// pub fn (path Path) extend_dir(relpath string) ! {
+
+// 	relpath2 = relpath2.replace("\\","/")
+
+// 	if path.cat != Category.dir{
+// 		return error("cannot only extend a dir, not a file or a link. $path")
+// 	}
+// 	return dir_new("$path/relpath2")
+// }
+
+// pub fn (path Path) extend_file_exists(relpath string) !Path {
+
+// 	mut relpath2 := relpath.trim(" ")
+
+// 	relpath2 = relpath2.replace("\\","/")
+
+// 	if path.cat != Category.dir{
+// 		return error("cannot only extend a dir, not a file or a link. $path")
+// 	}
+// 	return file_new_exists("$path/relpath2")
+// }
+
+// pub fn (path Path) extend_exists(relpath string) !Path {
+
+// 	p2 := path.extend(relpath)!
+// 	if ! p2.exists(){
+// 		return error("cannot extend $path with $relpath, directory does not exist")
+// 	}
+// 	return p2
+// }