combined progress tracking

1 files changed, 137 insertions, 0 deletions

diff --git a/fi-progress/progress.go b/fi-progress/progress.go
new file mode 100644
index 0000000..a49923f
--- /dev/null
+++ b/fi-progress/progress.go
@@ -0,0 +1,137 @@
+// Copyright 2019  Luke Shumaker <lukeshu@parabola.nu>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"regexp"
+
+	"git.lukeshu.com/go/libfastimport"
+
+	"git.parabola.nu/~lukeshu/fastimport-go-utils/fiutil"
+)
+
+func usage() {
+	fmt.Printf("Usage: %s REGEX1 [REGEX2...]\n", os.Args[0])
+	os.Exit(0)
+}
+
+func main() {
+	if len(os.Args) < 2 {
+		fiutil.ErrUsage("must give at least 1 regexp")
+	}
+
+	frontend := libfastimport.NewFrontend(os.Stdin, os.Stdin, nil)
+	backend := libfastimport.NewBackend(os.Stdout, os.Stdout, nil)
+
+	filter := &Progress{
+		backend: backend,
+	}
+	for _, str := range os.Args[1:] {
+		if str == "--help" {
+			usage()
+		}
+		re, err := regexp.Compile(str)
+		if err != nil {
+			fiutil.ErrUsage(fmt.Sprintf("bad regexp: %q: %v", str, err))
+		}
+		filter.filters = append(filter.filters, re)
+	}
+
+	filter.start()
+	err := fiutil.RunHandler(frontend, filter)
+	filter.end()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "%s: error: %v\n", os.Args[0], err)
+		os.Exit(1)
+	}
+}
+
+type Progress struct {
+	backend *libfastimport.Backend
+	filters []*regexp.Regexp
+	curLine int
+}
+
+func (h *Progress) start() {
+	for _ = range h.filters {
+		fmt.Fprintln(os.Stderr, "progress ")
+		h.curLine++
+	}
+}
+
+func (h *Progress) end() {
+	if h.curLine == len(h.filters) {
+		return
+	}
+	fmt.Fprintf(os.Stderr, "\r\x1B[%dB", len(h.filters)-h.curLine)
+}
+
+func (h *Progress) CmdProgress(cmd libfastimport.CmdProgress) error {
+	for i := range h.filters {
+		if h.filters[i].MatchString(cmd.Str) {
+			d := i - h.curLine
+			var prefix string
+			switch {
+			case d < 0:
+				prefix = fmt.Sprintf("\x1B[%dA", -d)
+			case d == 0:
+				prefix = ""
+			case d > 0:
+				prefix = fmt.Sprintf("\x1B[%dB", d)
+			}
+			fmt.Fprintf(os.Stderr, "\r%sprogress %s\x1B[0K", prefix, cmd.Str)
+			h.curLine = i
+			return nil
+		}
+	}
+	return h.backend.Do(cmd)
+}
+
+// pass through everything else
+func (h *Progress) CmdBlob(cmd libfastimport.CmdBlob) error             { return h.backend.Do(cmd) }
+func (h *Progress) CmdCheckpoint(cmd libfastimport.CmdCheckpoint) error { return h.backend.Do(cmd) }
+func (h *Progress) CmdComment(cmd libfastimport.CmdComment) error       { return h.backend.Do(cmd) }
+func (h *Progress) CmdCommit(cmd libfastimport.CmdCommit) error         { return h.backend.Do(cmd) }
+func (h *Progress) CmdCommitEnd(cmd libfastimport.CmdCommitEnd) error   { return h.backend.Do(cmd) }
+func (h *Progress) CmdDone(cmd libfastimport.CmdDone) error             { return h.backend.Do(cmd) }
+func (h *Progress) CmdFeature(cmd libfastimport.CmdFeature) error       { return h.backend.Do(cmd) }
+func (h *Progress) CmdOption(cmd libfastimport.CmdOption) error         { return h.backend.Do(cmd) }
+func (h *Progress) CmdReset(cmd libfastimport.CmdReset) error           { return h.backend.Do(cmd) }
+func (h *Progress) CmdTag(cmd libfastimport.CmdTag) error               { return h.backend.Do(cmd) }
+func (h *Progress) FileCopy(cmd libfastimport.FileCopy) error           { return h.backend.Do(cmd) }
+func (h *Progress) FileDelete(cmd libfastimport.FileDelete) error       { return h.backend.Do(cmd) }
+func (h *Progress) FileDeleteAll(cmd libfastimport.FileDeleteAll) error { return h.backend.Do(cmd) }
+func (h *Progress) FileModify(cmd libfastimport.FileModify) error       { return h.backend.Do(cmd) }
+func (h *Progress) FileModifyInline(cmd libfastimport.FileModifyInline) error {
+	return h.backend.Do(cmd)
+}
+func (h *Progress) FileRename(cmd libfastimport.FileRename) error { return h.backend.Do(cmd) }
+func (h *Progress) NoteModify(cmd libfastimport.NoteModify) error { return h.backend.Do(cmd) }
+func (h *Progress) NoteModifyInline(cmd libfastimport.NoteModifyInline) error {
+	return h.backend.Do(cmd)
+}
+
+func (h *Progress) CmdCatBlob(cmd libfastimport.CmdCatBlob) (sha1 string, data string, err error) {
+	return h.backend.CatBlob(cmd)
+}
+func (h *Progress) CmdGetMark(cmd libfastimport.CmdGetMark) (sha1 string, err error) {
+	return h.backend.GetMark(cmd)
+}
+func (h *Progress) CmdLs(cmd libfastimport.CmdLs) (mode libfastimport.Mode, dataref string, path libfastimport.Path, err error) {
+	return h.backend.Ls(cmd)
+}