diff options
Diffstat (limited to 'src/pkg/json/indent.go')
-rw-r--r-- | src/pkg/json/indent.go | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/src/pkg/json/indent.go b/src/pkg/json/indent.go deleted file mode 100644 index 000da42f6..000000000 --- a/src/pkg/json/indent.go +++ /dev/null @@ -1,116 +0,0 @@ -// Copyright 2010 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package json - -import ( - "bytes" - "os" -) - -// Compact appends to dst the JSON-encoded src with -// insignificant space characters elided. -func Compact(dst *bytes.Buffer, src []byte) os.Error { - origLen := dst.Len() - var scan scanner - scan.reset() - start := 0 - for i, c := range src { - v := scan.step(&scan, int(c)) - if v >= scanSkipSpace { - if v == scanError { - break - } - if start < i { - dst.Write(src[start:i]) - } - start = i + 1 - } - } - if scan.eof() == scanError { - dst.Truncate(origLen) - return scan.err - } - if start < len(src) { - dst.Write(src[start:]) - } - return nil -} - -func newline(dst *bytes.Buffer, prefix, indent string, depth int) { - dst.WriteByte('\n') - dst.WriteString(prefix) - for i := 0; i < depth; i++ { - dst.WriteString(indent) - } -} - -// Indent appends to dst an indented form of the JSON-encoded src. -// Each element in a JSON object or array begins on a new, -// indented line beginning with prefix followed by one or more -// copies of indent according to the indentation nesting. -// The data appended to dst has no trailing newline, to make it easier -// to embed inside other formatted JSON data. -func Indent(dst *bytes.Buffer, src []byte, prefix, indent string) os.Error { - origLen := dst.Len() - var scan scanner - scan.reset() - needIndent := false - depth := 0 - for _, c := range src { - v := scan.step(&scan, int(c)) - if v == scanSkipSpace { - continue - } - if v == scanError { - break - } - if needIndent && v != scanEndObject && v != scanEndArray { - needIndent = false - depth++ - newline(dst, prefix, indent, depth) - } - - // Emit semantically uninteresting bytes - // (in particular, punctuation in strings) unmodified. - if v == scanContinue { - dst.WriteByte(c) - continue - } - - // Add spacing around real punctuation. - switch c { - case '{', '[': - // delay indent so that empty object and array are formatted as {} and []. - needIndent = true - dst.WriteByte(c) - - case ',': - dst.WriteByte(c) - newline(dst, prefix, indent, depth) - - case ':': - dst.WriteByte(c) - dst.WriteByte(' ') - - case '}', ']': - if needIndent { - // suppress indent in empty object/array - needIndent = false - } else { - depth-- - newline(dst, prefix, indent, depth) - } - dst.WriteByte(c) - - default: - dst.WriteByte(c) - } - } - if scan.eof() == scanError { - dst.Truncate(origLen) - return scan.err - } - return nil -} |