func (b *SharedBuffer) MarkModified(start, end int) {
b.ModifiedThisFrame = true
- if !b.Settings["syntax"].(bool) || b.SyntaxDef == nil {
- return
- }
-
start = util.Clamp(start, 0, len(b.lines)-1)
end = util.Clamp(end, 0, len(b.lines)-1)
- l := -1
+ if b.Settings["syntax"].(bool) && b.SyntaxDef != nil {
+ l := -1
+ for i := start; i <= end; i++ {
+ l = util.Max(b.Highlighter.ReHighlightStates(b, i), l)
+ }
+ b.Highlighter.HighlightMatches(b, start, l)
+ }
+
for i := start; i <= end; i++ {
- l = util.Max(b.Highlighter.ReHighlightStates(b, i), l)
+ b.LineArray.invalidateSearchMatches(i)
}
- b.Highlighter.HighlightMatches(b, start, l)
}
// DisableReload disables future reloads of this sharedbuffer
// The syntax highlighting info must be stored with the buffer because the syntax
// highlighter attaches information to each line of the buffer for optimization
// purposes so it doesn't have to rehighlight everything on every update.
+// Likewise for the search highlighting.
type Buffer struct {
*EventHandler
*SharedBuffer
cursors []*Cursor
curCursor int
StartCursor Loc
+
+ // OptionCallback is called after a buffer option value is changed.
+ // The display module registers its OptionCallback to ensure the buffer window
+ // is properly updated when needed. This is a workaround for the fact that
+ // the buffer module cannot directly call the display's API (it would mean
+ // a circular dependency between packages).
+ OptionCallback func(option string, nativeValue interface{})
+
+ // The display module registers its own GetVisualX function for getting
+ // the correct visual x location of a cursor when softwrap is used.
+ // This is hacky. Maybe it would be better to move all the visual x logic
+ // from buffer to display, but it would require rewriting a lot of code.
+ GetVisualX func(loc Loc) int
+
+ // Last search stores the last successful search
+ LastSearch string
+ LastSearchRegex bool
+ // HighlightSearch enables highlighting all instances of the last successful search
+ HighlightSearch bool
}
// NewBufferFromFileAtLoc opens a new buffer with a given cursor location
return nil, err
}
- file, err := os.Open(filename)
- fileInfo, _ := os.Stat(filename)
+ f, err := os.OpenFile(filename, os.O_WRONLY, 0)
+ readonly := os.IsPermission(err)
+ f.Close()
- if err == nil && fileInfo.IsDir() {
+ fileInfo, serr := os.Stat(filename)
+ if serr != nil && !os.IsNotExist(serr) {
+ return nil, serr
+ }
+ if serr == nil && fileInfo.IsDir() {
return nil, errors.New("Error: " + filename + " is a directory and cannot be opened")
}
- defer file.Close()
+ file, err := os.Open(filename)
+ if err == nil {
+ defer file.Close()
+ }
var buf *Buffer
- if err != nil {
+ if os.IsNotExist(err) {
// File does not exist -- create an empty buffer with that name
buf = NewBufferFromString("", filename, btype)
+ } else if err != nil {
+ return nil, err
} else {
buf = NewBuffer(file, util.FSize(file), filename, cursorLoc, btype)
+ if buf == nil {
+ return nil, errors.New("could not open file")
+ }
+ }
+
+ if readonly && prompt != nil {
+ prompt.Message(fmt.Sprintf("Warning: file is readonly - %s will be attempted when saving", config.GlobalSettings["sucmd"].(string)))
+ // buf.SetOptionNative("readonly", true)
}
return buf, nil
// Places the cursor at startcursor. If startcursor is -1, -1 places the
// cursor at an autodetected location (based on savecursor or :LINE:COL)
func NewBuffer(r io.Reader, size int64, path string, startcursor Loc, btype BufType) *Buffer {
- absPath, _ := filepath.Abs(path)
+ absPath, err := filepath.Abs(path)
+ if err != nil {
+ absPath = path
+ }
b := new(Buffer)
b.AbsPath = absPath
b.Path = path
+ // this is a little messy since we need to know some settings to read
+ // the file properly, but some settings depend on the filetype, which
+ // we don't know until reading the file. We first read the settings
+ // into a local variable and then use that to determine the encoding,
+ // readonly, and fileformat necessary for reading the file and
+ // assigning the filetype.
+ settings := config.DefaultCommonSettings()
b.Settings = config.DefaultCommonSettings()
for k, v := range config.GlobalSettings {
if _, ok := config.DefaultGlobalOnlySettings[k]; !ok {
// make sure setting is not global-only
+ settings[k] = v
b.Settings[k] = v
}
}
- config.InitLocalSettings(b.Settings, path)
+ config.InitLocalSettings(settings, absPath)
+ b.Settings["readonly"] = settings["readonly"]
+ b.Settings["filetype"] = settings["filetype"]
+ b.Settings["syntax"] = settings["syntax"]
- enc, err := htmlindex.Get(b.Settings["encoding"].(string))
+ enc, err := htmlindex.Get(settings["encoding"].(string))
if err != nil {
enc = unicode.UTF8
b.Settings["encoding"] = "utf-8"
}
- hasBackup = b.ApplyBackup(size)
+ var ok bool
+ hasBackup, ok = b.ApplyBackup(size)
+ if !ok {
+ return NewBufferFromString("", "", btype)
+ }
if !hasBackup {
reader := bufio.NewReader(transform.NewReader(r, enc.NewDecoder()))
if size == 0 {
// for empty files, use the fileformat setting instead of
// autodetection
- switch b.Settings["fileformat"] {
+ switch settings["fileformat"] {
case "unix":
ff = FFUnix
case "dos":
if startcursor.X != -1 && startcursor.Y != -1 {
b.StartCursor = startcursor
- } else {
- if b.Settings["savecursor"].(bool) || b.Settings["saveundo"].(bool) {
- err := b.Unserialize()
- if err != nil {
- screen.TermMessage(err)
- }
+ } else if b.Settings["savecursor"].(bool) || b.Settings["saveundo"].(bool) {
+ err := b.Unserialize()
+ if err != nil {
+ screen.TermMessage(err)
}
}
for len(line) > 0 {
r, _, size := util.DecodeCharacter(line)
line = line[size:]
- i++
if i == loc.X {
return r
}
+
+ i++
}
}
return '\n'
}
+// WordAt returns the word around a given location in the buffer
+func (b *Buffer) WordAt(loc Loc) []byte {
+ if len(b.LineBytes(loc.Y)) == 0 || !util.IsWordChar(b.RuneAt(loc)) {
+ return []byte{}
+ }
+
+ start := loc
+ end := loc.Move(1, b)
+
+ for start.X > 0 && util.IsWordChar(b.RuneAt(start.Move(-1, b))) {
+ start.X--
+ }
+
+ lineLen := util.CharacterCount(b.LineBytes(loc.Y))
+ for end.X < lineLen && util.IsWordChar(b.RuneAt(end)) {
+ end.X++
+ }
+
+ return b.Substr(start, end)
+}
+
// Modified returns if this buffer has been modified since
// being opened
func (b *Buffer) Modified() bool {
ws := util.GetLeadingWhitespace(l)
if len(ws) != 0 {
if toSpaces {
- ws = bytes.Replace(ws, []byte{'\t'}, bytes.Repeat([]byte{' '}, tabsize), -1)
+ ws = bytes.ReplaceAll(ws, []byte{'\t'}, bytes.Repeat([]byte{' '}, tabsize))
} else {
- ws = bytes.Replace(ws, bytes.Repeat([]byte{' '}, tabsize), []byte{'\t'}, -1)
+ ws = bytes.ReplaceAll(ws, bytes.Repeat([]byte{' '}, tabsize), []byte{'\t'})
}
}
return b.diff[lineN]
}
+// SearchMatch returns true if the given location is within a match of the last search.
+// It is used for search highlighting
+func (b *Buffer) SearchMatch(pos Loc) bool {
+ return b.LineArray.SearchMatch(b, pos)
+}
+
// WriteLog writes a string to the log buffer
func WriteLog(s string) {
LogBuf.EventHandler.Insert(LogBuf.End(), s)
projects / micro.git / blobdiff