diff options
Diffstat (limited to 'vendor/google.golang.org/api/googleapi/internal/uritemplates')
3 files changed, 251 insertions, 0 deletions
diff --git a/vendor/google.golang.org/api/googleapi/internal/uritemplates/LICENSE b/vendor/google.golang.org/api/googleapi/internal/uritemplates/LICENSE new file mode 100644 index 0000000..de9c88c --- /dev/null +++ b/vendor/google.golang.org/api/googleapi/internal/uritemplates/LICENSE @@ -0,0 +1,18 @@ +Copyright (c) 2013 Joshua Tacoma + +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of +the Software, and to permit persons to whom the Software is furnished to do so, +subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS +FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR +COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER +IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/vendor/google.golang.org/api/googleapi/internal/uritemplates/uritemplates.go b/vendor/google.golang.org/api/googleapi/internal/uritemplates/uritemplates.go new file mode 100644 index 0000000..7c103ba --- /dev/null +++ b/vendor/google.golang.org/api/googleapi/internal/uritemplates/uritemplates.go @@ -0,0 +1,220 @@ +// Copyright 2013 Joshua Tacoma. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package uritemplates is a level 3 implementation of RFC 6570 (URI +// Template, http://tools.ietf.org/html/rfc6570). +// uritemplates does not support composite values (in Go: slices or maps) +// and so does not qualify as a level 4 implementation. +package uritemplates + +import ( + "bytes" + "errors" + "regexp" + "strconv" + "strings" +) + +var ( + unreserved = regexp.MustCompile("[^A-Za-z0-9\\-._~]") + reserved = regexp.MustCompile("[^A-Za-z0-9\\-._~:/?#[\\]@!$&'()*+,;=]") + validname = regexp.MustCompile("^([A-Za-z0-9_\\.]|%[0-9A-Fa-f][0-9A-Fa-f])+$") + hex = []byte("0123456789ABCDEF") +) + +func pctEncode(src []byte) []byte { + dst := make([]byte, len(src)*3) + for i, b := range src { + buf := dst[i*3 : i*3+3] + buf[0] = 0x25 + buf[1] = hex[b/16] + buf[2] = hex[b%16] + } + return dst +} + +func escape(s string, allowReserved bool) string { + if allowReserved { + return string(reserved.ReplaceAllFunc([]byte(s), pctEncode)) + } + return string(unreserved.ReplaceAllFunc([]byte(s), pctEncode)) +} + +// A uriTemplate is a parsed representation of a URI template. +type uriTemplate struct { + raw string + parts []templatePart +} + +// parse parses a URI template string into a uriTemplate object. +func parse(rawTemplate string) (*uriTemplate, error) { + split := strings.Split(rawTemplate, "{") + parts := make([]templatePart, len(split)*2-1) + for i, s := range split { + if i == 0 { + if strings.Contains(s, "}") { + return nil, errors.New("unexpected }") + } + parts[i].raw = s + continue + } + subsplit := strings.Split(s, "}") + if len(subsplit) != 2 { + return nil, errors.New("malformed template") + } + expression := subsplit[0] + var err error + parts[i*2-1], err = parseExpression(expression) + if err != nil { + return nil, err + } + parts[i*2].raw = subsplit[1] + } + return &uriTemplate{ + raw: rawTemplate, + parts: parts, + }, nil +} + +type templatePart struct { + raw string + terms []templateTerm + first string + sep string + named bool + ifemp string + allowReserved bool +} + +type templateTerm struct { + name string + explode bool + truncate int +} + +func parseExpression(expression string) (result templatePart, err error) { + switch expression[0] { + case '+': + result.sep = "," + result.allowReserved = true + expression = expression[1:] + case '.': + result.first = "." + result.sep = "." + expression = expression[1:] + case '/': + result.first = "/" + result.sep = "/" + expression = expression[1:] + case ';': + result.first = ";" + result.sep = ";" + result.named = true + expression = expression[1:] + case '?': + result.first = "?" + result.sep = "&" + result.named = true + result.ifemp = "=" + expression = expression[1:] + case '&': + result.first = "&" + result.sep = "&" + result.named = true + result.ifemp = "=" + expression = expression[1:] + case '#': + result.first = "#" + result.sep = "," + result.allowReserved = true + expression = expression[1:] + default: + result.sep = "," + } + rawterms := strings.Split(expression, ",") + result.terms = make([]templateTerm, len(rawterms)) + for i, raw := range rawterms { + result.terms[i], err = parseTerm(raw) + if err != nil { + break + } + } + return result, err +} + +func parseTerm(term string) (result templateTerm, err error) { + // TODO(djd): Remove "*" suffix parsing once we check that no APIs have + // mistakenly used that attribute. + if strings.HasSuffix(term, "*") { + result.explode = true + term = term[:len(term)-1] + } + split := strings.Split(term, ":") + if len(split) == 1 { + result.name = term + } else if len(split) == 2 { + result.name = split[0] + var parsed int64 + parsed, err = strconv.ParseInt(split[1], 10, 0) + result.truncate = int(parsed) + } else { + err = errors.New("multiple colons in same term") + } + if !validname.MatchString(result.name) { + err = errors.New("not a valid name: " + result.name) + } + if result.explode && result.truncate > 0 { + err = errors.New("both explode and prefix modifers on same term") + } + return result, err +} + +// Expand expands a URI template with a set of values to produce a string. +func (t *uriTemplate) Expand(values map[string]string) string { + var buf bytes.Buffer + for _, p := range t.parts { + p.expand(&buf, values) + } + return buf.String() +} + +func (tp *templatePart) expand(buf *bytes.Buffer, values map[string]string) { + if len(tp.raw) > 0 { + buf.WriteString(tp.raw) + return + } + var first = true + for _, term := range tp.terms { + value, exists := values[term.name] + if !exists { + continue + } + if first { + buf.WriteString(tp.first) + first = false + } else { + buf.WriteString(tp.sep) + } + tp.expandString(buf, term, value) + } +} + +func (tp *templatePart) expandName(buf *bytes.Buffer, name string, empty bool) { + if tp.named { + buf.WriteString(name) + if empty { + buf.WriteString(tp.ifemp) + } else { + buf.WriteString("=") + } + } +} + +func (tp *templatePart) expandString(buf *bytes.Buffer, t templateTerm, s string) { + if len(s) > t.truncate && t.truncate > 0 { + s = s[:t.truncate] + } + tp.expandName(buf, t.name, len(s) == 0) + buf.WriteString(escape(s, tp.allowReserved)) +} diff --git a/vendor/google.golang.org/api/googleapi/internal/uritemplates/utils.go b/vendor/google.golang.org/api/googleapi/internal/uritemplates/utils.go new file mode 100644 index 0000000..eff260a --- /dev/null +++ b/vendor/google.golang.org/api/googleapi/internal/uritemplates/utils.go @@ -0,0 +1,13 @@ +// Copyright 2016 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 uritemplates + +func Expand(path string, values map[string]string) (string, error) { + template, err := parse(path) + if err != nil { + return "", err + } + return template.Expand(values), nil +} |