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author | Jisi Liu <jisi.liu@gmail.com> | 2016-03-30 11:39:59 -0700 |
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committer | Jisi Liu <jisi.liu@gmail.com> | 2016-03-30 11:39:59 -0700 |
commit | 3b3c8abb9635eb3ea078a821a99c9ef29d66dff7 (patch) | |
tree | 7d2ec154f15c9f9153d890e76b6cf30e471ea488 /src/google/protobuf/util/field_mask_util.cc | |
parent | 78105897a8f01c7be9cf8502b6c58d47eb1ccdd7 (diff) | |
download | protobuf-3b3c8abb9635eb3ea078a821a99c9ef29d66dff7.tar.gz protobuf-3b3c8abb9635eb3ea078a821a99c9ef29d66dff7.tar.bz2 protobuf-3b3c8abb9635eb3ea078a821a99c9ef29d66dff7.zip |
Integrate google internal changes.
Diffstat (limited to 'src/google/protobuf/util/field_mask_util.cc')
-rw-r--r-- | src/google/protobuf/util/field_mask_util.cc | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/src/google/protobuf/util/field_mask_util.cc b/src/google/protobuf/util/field_mask_util.cc index c59f43aa..547c9fb5 100644 --- a/src/google/protobuf/util/field_mask_util.cc +++ b/src/google/protobuf/util/field_mask_util.cc @@ -52,6 +52,82 @@ void FieldMaskUtil::FromString(StringPiece str, FieldMask* out) { } } +bool FieldMaskUtil::SnakeCaseToCamelCase(StringPiece input, string* output) { + output->clear(); + bool after_underscore = false; + for (int i = 0; i < input.size(); ++i) { + if (input[i] >= 'A' && input[i] <= 'Z') { + // The field name must not contain uppercase letters. + return false; + } + if (after_underscore) { + if (input[i] >= 'a' && input[i] <= 'z') { + output->push_back(input[i] + 'A' - 'a'); + after_underscore = false; + } else { + // The character after a "_" must be a lowercase letter. + return false; + } + } else if (input[i] == '_') { + after_underscore = true; + } else { + output->push_back(input[i]); + } + } + if (after_underscore) { + // Trailing "_". + return false; + } + return true; +} + +bool FieldMaskUtil::CamelCaseToSnakeCase(StringPiece input, string* output) { + output->clear(); + for (int i = 0; i < input.size(); ++i) { + if (input[i] == '_') { + // The field name must not contain "_"s. + return false; + } + if (input[i] >= 'A' && input[i] <= 'Z') { + output->push_back('_'); + output->push_back(input[i] + 'a' - 'A'); + } else { + output->push_back(input[i]); + } + } + return true; +} + +bool FieldMaskUtil::ToJsonString(const FieldMask& mask, string* out) { + out->clear(); + for (int i = 0; i < mask.paths_size(); ++i) { + const string& path = mask.paths(i); + string camelcase_path; + if (!SnakeCaseToCamelCase(path, &camelcase_path)) { + return false; + } + if (i > 0) { + out->push_back(','); + } + out->append(camelcase_path); + } + return true; +} + +bool FieldMaskUtil::FromJsonString(StringPiece str, FieldMask* out) { + out->Clear(); + vector<string> paths = Split(str, ","); + for (int i = 0; i < paths.size(); ++i) { + if (paths[i].empty()) continue; + string snakecase_path; + if (!CamelCaseToSnakeCase(paths[i], &snakecase_path)) { + return false; + } + out->add_paths(snakecase_path); + } + return true; +} + bool FieldMaskUtil::InternalIsValidPath(const Descriptor* descriptor, StringPiece path) { vector<string> parts = Split(path, "."); |