prometheus/vendor/github.com/shurcooL/vfsgen/stringwriter.go

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Replace go-bindata with vfsgen (#4430) Looking at https://tech.townsourced.com/post/embedding-static-files-in-go/ (which was mentioned in the issue), vfsgen has all the needed features. In particular: - Reproducible builds (no issue with timestamping). - Well maintained and relatively popular. - Integration with go generate. - Self-contained (no external dependency). * [WIP] Replace go-bindata by vfsgen Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Add license + remove doc.go Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Generate templates assets Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Use new templates assets Signed-off-by: Simon Pasquier <spasquie@redhat.com> * split static assets Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Idempotent make assets Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Update vendor/ Signed-off-by: Simon Pasquier <spasquie@redhat.com> * vendor vfsgendev Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Update README.md Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Simplify assets generation Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Fix README.md Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Use generate helper program instead of vfsgen This avoids installing vfsgendev in the target environment. Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Remove unused vfsgen package Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Fix Makefile Signed-off-by: Simon Pasquier <spasquie@redhat.com> * vendoring shurcooL/vfsgen Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Fix go generate command Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Sync web/ui/assets_vfsdata.go Signed-off-by: Simon Pasquier <spasquie@redhat.com>
2018-08-24 00:03:10 -07:00
package vfsgen
import (
"io"
)
// stringWriter writes given bytes to underlying io.Writer as a Go interpreted string literal value,
// not including double quotes. It tracks the total number of bytes written.
type stringWriter struct {
io.Writer
N int64 // Total bytes written.
}
func (sw *stringWriter) Write(p []byte) (n int, err error) {
const hex = "0123456789abcdef"
buf := []byte{'\\', 'x', 0, 0}
for _, b := range p {
buf[2], buf[3] = hex[b/16], hex[b%16]
_, err = sw.Writer.Write(buf)
if err != nil {
return n, err
}
n++
sw.N++
}
return n, nil
}