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Jon Nappi committed Jul 11, 2016
1 parent fcb5488 commit 726375d
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21 changes: 21 additions & 0 deletions LICENSE
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MIT License

Copyright (c) 2016 Dynamic Network Services Inc.

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.
Empty file added Makefile
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95 changes: 94 additions & 1 deletion README.md
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# qstring
Golang HTTP Query String Marshaler/Unmarshaler
The package provides an easy way to marshal and unmarshal query string data to
and from structs.

# Installation
```bash
$ go get github.com/dyninc/qstring
```

# Example

## Literal

```go
package main

import (
"net/http"

"github.com/dyninc/qstring"
)

// Query is the request query struct.
type Query struct {
Names []string
Limit int
Page int
}

func handler(w http.ResponseWriter, req *http.Request) {
query := &Query{}
err := qstring.Unmarshal(req.Url.Query(), query)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
}

// ... run conditional logic based on provided query parameters
}
```

## Nested
In the same spirit as other Unmarshalling libraries, `qstring` allows you to
Marshal/Unmarshal nested structs

```go
package main

import (
"net/http"

"github.com/dyninc/qstring"
)

// PagingParams represents common pagination information for query strings
type PagingParams struct {
Page int
Limit int
}

// Req is the request query struct.
type Query struct {
Names []string
PageInfo PagingParams
}
```

## Complex Structures
Again, in the spirit of other Unmarshalling libraries, `qstring` allows for some
more complex types, such as pointers and time.Time fields. *Note: All Timestamps
are assumed to be in RFC3339 format*.

```go
package main

import (
"net/http"
"time"

"github.com/dyninc/qstring"
)

// PagingParams represents common pagination information for query strings
type PagingParams struct {
Page int
Limit int
}

// Req is the request query struct.
type Query struct {
Names []string
PageInfo *PagingParams
Created time.TIme
Modified time.Time
}
```
52 changes: 52 additions & 0 deletions bench_test.go
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package qstring

import (
"net/url"
"testing"
)

// Straight benchmark literal.
func BenchmarkUnmarshall(b *testing.B) {
query := url.Values{
"limit": []string{"10"},
"page": []string{"1"},
"fields": []string{"a", "b", "c"},
}
type QueryStruct struct {
Fields []string
Limit int
Page int
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
data := &QueryStruct{}
err := Unmarshal(query, data)
if err != nil {
b.Fatal(err)
}
}
}

// Parallel benchmark literal.
func BenchmarkRawPLiteral(b *testing.B) {
query := url.Values{
"limit": []string{"10"},
"page": []string{"1"},
"fields": []string{"a", "b", "c"},
}
type QueryStruct struct {
Fields []string
Limit int
Page int
}
b.ResetTimer()
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
data := &QueryStruct{}
err := Unmarshal(query, data)
if err != nil {
b.Fatal(err)
}
}
})
}
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