1// Protocol Buffers - Google's data interchange format
2// Copyright 2008 Google Inc. All rights reserved.
3// https://developers.google.com/protocol-buffers/
4//
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6// modification, are permitted provided that the following conditions are
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20// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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29// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31// FieldMask related utility methods.
32
33#ifndef GOOGLE_PROTOBUF_UTIL_INTERNAL_FIELD_MASK_UTILITY_H__
34#define GOOGLE_PROTOBUF_UTIL_INTERNAL_FIELD_MASK_UTILITY_H__
35
36#include <functional>
37#include <stack>
38
39#include <google/protobuf/stubs/callback.h>
40#include <google/protobuf/stubs/common.h>
41#include <google/protobuf/stubs/status.h>
42#include <google/protobuf/stubs/strutil.h>
43#include <google/protobuf/stubs/status.h>
44
45namespace google {
46namespace protobuf {
47namespace util {
48namespace converter {
49
50typedef std::function<std::string(StringPiece)> ConverterCallback;
51typedef std::function<util::Status(StringPiece)> PathSinkCallback;
52
53// Applies a 'converter' to each segment of a FieldMask path and returns the
54// result. Quoted strings in the 'path' are copied to the output as-is without
55// converting their content. Escaping is supported within quoted strings.
56// For example, "ab\"_c" will be returned as "ab\"_c" without any changes.
57std::string ConvertFieldMaskPath(const StringPiece path,
58 ConverterCallback converter);
59
60// Decodes a compact list of FieldMasks. For example, "a.b,a.c.d,a.c.e" will be
61// decoded into a list of field paths - "a.b", "a.c.d", "a.c.e". And the results
62// will be sent to 'path_sink', i.e. 'path_sink' will be called once per
63// resulting path.
64// Note that we also support Apiary style FieldMask form. The above example in
65// the Apiary style will look like "a.b,a.c(d,e)".
66util::Status DecodeCompactFieldMaskPaths(StringPiece paths,
67 PathSinkCallback path_sink);
68
69} // namespace converter
70} // namespace util
71} // namespace protobuf
72} // namespace google
73
74#endif // GOOGLE_PROTOBUF_UTIL_INTERNAL_FIELD_MASK_UTILITY_H__
75