diff options
Diffstat (limited to 'vendor/github.com/pquerna/ffjson/inception/tags.go')
-rw-r--r-- | vendor/github.com/pquerna/ffjson/inception/tags.go | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/vendor/github.com/pquerna/ffjson/inception/tags.go b/vendor/github.com/pquerna/ffjson/inception/tags.go new file mode 100644 index 000000000..ccce101b8 --- /dev/null +++ b/vendor/github.com/pquerna/ffjson/inception/tags.go @@ -0,0 +1,79 @@ +/** + * Copyright 2014 Paul Querna + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package ffjsoninception + +import ( + "strings" + "unicode" +) + +// from: http://golang.org/src/pkg/encoding/json/tags.go + +// tagOptions is the string following a comma in a struct field's "json" +// tag, or the empty string. It does not include the leading comma. +type tagOptions string + +// parseTag splits a struct field's json tag into its name and +// comma-separated options. +func parseTag(tag string) (string, tagOptions) { + if idx := strings.Index(tag, ","); idx != -1 { + return tag[:idx], tagOptions(tag[idx+1:]) + } + return tag, tagOptions("") +} + +// Contains reports whether a comma-separated list of options +// contains a particular substr flag. substr must be surrounded by a +// string boundary or commas. +func (o tagOptions) Contains(optionName string) bool { + if len(o) == 0 { + return false + } + s := string(o) + for s != "" { + var next string + i := strings.Index(s, ",") + if i >= 0 { + s, next = s[:i], s[i+1:] + } + if s == optionName { + return true + } + s = next + } + return false +} + +func isValidTag(s string) bool { + if s == "" { + return false + } + for _, c := range s { + switch { + case strings.ContainsRune("!#$%&()*+-./:<=>?@[]^_{|}~ ", c): + // Backslash and quote chars are reserved, but + // otherwise any punctuation chars are allowed + // in a tag name. + default: + if !unicode.IsLetter(c) && !unicode.IsDigit(c) { + return false + } + } + } + return true +} |