From 1bb39eba8717f62336cc98c5bb7cfbef194f3626 Mon Sep 17 00:00:00 2001 From: Wim Date: Sat, 23 Feb 2019 16:39:44 +0100 Subject: Add scripting (tengo) support for every incoming message (#731) TengoModifyMessage allows you to specify the location of a tengo (https://github.com/d5/tengo/) script. This script will receive every incoming message and can be used to modify the Username and the Text of that message. The script will have the following global variables: to modify: msgUsername and msgText to read: msgChannel and msgAccount The script is reloaded on every message, so you can modify the script on the fly. Example script can be found in https://github.com/42wim/matterbridge/tree/master/gateway/bench.tengo and https://github.com/42wim/matterbridge/tree/master/contrib/example.tengo The example below will check if the text contains blah and if so, it'll replace the text and the username of that message. text := import("text") if text.re_match("blah",msgText) { msgText="replaced by this" msgUsername="fakeuser" } More information about tengo on: https://github.com/d5/tengo/blob/master/docs/tutorial.md and https://github.com/d5/tengo/blob/master/docs/stdlib.md --- .../d5/tengo/compiler/source/file_set.go | 96 ++++++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 vendor/github.com/d5/tengo/compiler/source/file_set.go (limited to 'vendor/github.com/d5/tengo/compiler/source/file_set.go') diff --git a/vendor/github.com/d5/tengo/compiler/source/file_set.go b/vendor/github.com/d5/tengo/compiler/source/file_set.go new file mode 100644 index 00000000..da342364 --- /dev/null +++ b/vendor/github.com/d5/tengo/compiler/source/file_set.go @@ -0,0 +1,96 @@ +package source + +import ( + "sort" +) + +// FileSet represents a set of source files. +type FileSet struct { + Base int // base offset for the next file + Files []*File // list of files in the order added to the set + LastFile *File // cache of last file looked up +} + +// NewFileSet creates a new file set. +func NewFileSet() *FileSet { + return &FileSet{ + Base: 1, // 0 == NoPos + } +} + +// AddFile adds a new file in the file set. +func (s *FileSet) AddFile(filename string, base, size int) *File { + if base < 0 { + base = s.Base + } + if base < s.Base || size < 0 { + panic("illegal base or size") + } + + f := &File{ + set: s, + Name: filename, + Base: base, + Size: size, + Lines: []int{0}, + } + + base += size + 1 // +1 because EOF also has a position + if base < 0 { + panic("offset overflow (> 2G of source code in file set)") + } + + // add the file to the file set + s.Base = base + s.Files = append(s.Files, f) + s.LastFile = f + + return f +} + +// File returns the file that contains the position p. +// If no such file is found (for instance for p == NoPos), +// the result is nil. +// +func (s *FileSet) File(p Pos) (f *File) { + if p != NoPos { + f = s.file(p) + } + + return +} + +// Position converts a Pos p in the fileset into a FilePos value. +func (s *FileSet) Position(p Pos) (pos FilePos) { + if p != NoPos { + if f := s.file(p); f != nil { + return f.position(p) + } + } + + return +} + +func (s *FileSet) file(p Pos) *File { + // common case: p is in last file + if f := s.LastFile; f != nil && f.Base <= int(p) && int(p) <= f.Base+f.Size { + return f + } + + // p is not in last file - search all files + if i := searchFiles(s.Files, int(p)); i >= 0 { + f := s.Files[i] + + // f.base <= int(p) by definition of searchFiles + if int(p) <= f.Base+f.Size { + s.LastFile = f // race is ok - s.last is only a cache + return f + } + } + + return nil +} + +func searchFiles(a []*File, x int) int { + return sort.Search(len(a), func(i int) bool { return a[i].Base > x }) - 1 +} -- cgit v1.2.3