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Programming language: Go
Tags: Utilities    
Latest version: v0.7.4

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README

pgo

Go library for PHP community with convenient functions

Mentioned in Awesome Go Go Report Card Build and test codecov License: MIT GoDoc

Installation

Via go get command:

go get github.com/arthurkushman/pgo

Imagine that you need to write Go code every day and also have a convenient functions in memory from PHP experience

Date

You can use date function with similar formatting for PHP e.g.:

dateStr := pgo.Date("Y-m-d H:i:s") // 2019-03-28 12:23:03

pgo.Date("j D, M") // 27 Wed, Mar

pgo.Date("Q") // 3 (of 1,2,3,4 quarters)

Milli/Micro

nowMicro := pgo.UnixMicro() // get current unix microseconds
nowMilli := pgo.UnixMilli() // get current unix milliseconds

// get current millis + 3ms 
nowMillisPlusThree := pgo.Time(time.Now().Add(time.Millisecond * 3)).Milliseconds()
// get current microseconds + 7μs 
nowMicroPlusSeven := pgo.Time(now.Add(time.Microsecond * 7)).Microseconds()

Strings

StrReplace

replace sub-strings with StrReplace:

subject := "The quick brown fox jumped over the lazy dog"

str, err := pgo.StrReplace([]string{"fox", "dog"}, []string{"cat", "elephant"}, subject)

// and if case-insensitive replace needed - pgo.StrIReplace([]string{"DOG", "QuiCK"}, []string{"fox", "slow"}, subject) 

HTTPBuildQuery

Bulding a http query string:

queryStr := pgo.HTTPBuildQuery(map[string]string{
    "foo": "bar",
    "bar": "baz",
}) // bar=baz&foo=bar

StripTags

Strip tags with exclusion rules:

html := "<div>Lorem <span>ipsum dolor sit amet</span>, consectetur adipiscing elit, sed do eiusmod <a href=\"http://example.com\">tempor incididunt</a> ut labore <strong>et dolore</strong> magna aliqua.</div>"

str := html.StripTags(html, []string{"a", "span"}) // results in: "Lorem <span>ipsum dolor sit amet</span>, consectetur adipiscing elit, sed do eiusmod <a href=\"http://example.com\">tempor incididunt</a> ut labore et dolore magna aliqua."

UPD: As had been stated here - https://github.com/golang/go/issues/22639 There is a very handy "stripTags" function in html/template, then guys from official team as fast as they got dislike on their negative comment, closed the thread. That is why libs like pgo is appearing and will be move forward/evelove, bypassing strict rules that sometimes looking nonsence.

Files

FileGetContents

Read files with offset/limit:

content, err := pgo.FileGetContents("somefile.txt", 0, 1024)

FilePutContents

reflexively write to files with:

n, err := pgo.FilePutContents("somefile.txt", strToWrite, pgo.FileAppend)

Read from context (via http(s)):

content, err := pgo.FileGetContents("http://google.com", pgo.NewContext())

MoveUploadedFile

Uploading files from web-forms to your server:

ctx := pgo.NewContext()
ctx.Req = YourReq
ctx.UploadMaxFileSize = 10 << 25

uploaded := ctx.MoveUploadedFile("foo", "/srv/images/pic123.png")

FileExists

Checking for file existence

if pgo.FileExists("file1.txt") == true {
    // do something with existent file
}

Check if it is file/dir/symlink

if pgo.IsFile("someFile.txt") {
    // do something with file
}

if pgo.IsDir("someDir/") {
    // do something with dir
}

if pgo.IsLink("someLink") {
    // do somthing with symlink
}

Arrays

InArray

Check if an array contains an element

pgo.InArray(3, []int{1, 2, 3}) // true
pgo.InArray("bar33", []string{"foo", "bar", "baz"}) // false
pgo.InArray(3.14159, []float64{33.12, 12.333, 3.14159, 78.4429}) // true

ArrayChunk

Split an array by chunks (with auto-tailing)

pgo.ArrayChunk([]int{1, 2, 3, 4, 5, 6, 7, 8}, 2) // [][]int{[]int{1, 2}, []int{3, 4}, []int{5, 6}, []int{7, 8}}

pgo.ArrayChunk([]string{"foo", "bar", "baz", "fizz", "buzz"}, 3) // [][]string{[]string{"foo", "bar", "baz"}, []string{"fizz", "buzz"}}

ArrayCombine

Create an array by using one array for keys and another for its values

pgo.ArrayCombine([]int{11, 32, 13, 14, 51, 46, 17, 88}, []string{"foo", "bar", "baz", "fizz", "buzz", "mazz", "freez", "lorum"})
/*
map[int]string{
        11: "foo",
        32: "bar",
        13: "baz",
        14: "fizz",
        51: "buzz",
        46: "mazz",
        17: "freez",
        88: "lorum",
    }   
*/
pgo.ArrayCombine([]string{"foo", "bar", "baz", "fizz", "buzz"}, []float64{11.32, 32.42, 13.246, 14.41, 51.98})
/*
map[string]float64{
            "foo":  11.32,
            "bar":  32.42,
            "baz":  13.246,
            "fizz": 14.41,
            "buzz": 51.98,
        }
*/

ArrayCountValues

Count all the values of an array/slice

pgo.ArrayCountValues([]string{"foo", "bar", "foo", "baz", "bar", "bar"}) // map[string]int{"foo": 2, "bar": 3, "baz": 1}

pgo.ArrayCountValues([]float64{3.14159, 43.03, 8, 3.14159, 43.02, 8}) // map[float64]int{3.14159: 2, 8: 2, 43.03: 1, 43.02: 1}

ArrayMap

Apply the callback to the elements of the given arrays

pgo.ArrayMap([]string{"foo", "bar", "baz"}, func(v string) string {
        return strings.ToUpper(v)
    }) // []string{"FOO", "BAR", "BAZ"}

pgo.ArrayMap([]float64{1, 2, 3, 4, 5}, func(v float64) float64 {
        return math.Pow(v, 2)
    }) // []float64{1, 4, 9, 16, 25}

ArrayFilter

filters elements of an array using a callback function

pgo.ArrayFilter([]float64{1, 2, 3, 4, 5}, func(v float64) bool {
        return v > 2.718
    }) // []float64{3, 4, 5}

ArrayDiff

returns the values in array1 that are not present in any of the other arrays

pgo.ArrayDiff([]string{"foo", "bar", "fizz", "baz"}, []string{"foo", "bar"}) // []string{"fizz", "baz"}
pgo.ArrayDiff([]int{3, 43, 8, 4, 9}, []int{3, 8, 9, 4}) // []int{43}

ArraySum

calculate the sum of values in an array

pgo.ArraySum([]int{12, 54, 32, 12, 33}) // int: 143

ArrayIntersect

computes the intersection of arrays

pgo.ArrayIntersect([]int{12, 54, 32, 12, 33}, []int{3, 12, 54, 9}, []int{12, 33, 9}) // []int{12, 54, 33}

pgo.ArrayIntersect([]string{"foo", "bar", "baz", "fizz", "bazz", "fizz", "fizz"}, []string{"bar", "fizz"}, []string{"foo", "bar", "hey"}) // []string{"foo", "bar", "fizz"}

Range

creates an int slice of min to max range

pgo.Range(3, 9) // []int{3, 4, 5, 6, 7, 8, 9}

// If a step value is given, it will be used as the increment between elements in the sequence.
pgo.Range(-3, 7, 5) // []int{-3, 2, 7}

See more examples in *_test.go files.

Collections

Priority Queue

    // Some items and their priorities.
    items := map[string]int{
        "banana": 3, "apple": 2, "pear": 4, "peach": 1, "plum": 6,
    }

    // Create a Priority queue, put the items in it, and
    // establish the Priority queue (heap) invariants.
    pq := make(pgo.PriorityQueue, len(items))
    i := 0
    for value, priority := range items {
        pq[i] = &pgo.Item{
            Value:    value,
            Priority: priority,
            Index:    i,
        }
        i++
    }
    pq.Init()

    // Insert a new item and then modify its Priority.
    item := &pgo.Item{
        Value:    "orange",
        Priority: 1,
    }
    pq.Push(item)
    pq.Update(item, item.Value, 5)

    item := pq.Pop().(*pgo.Item) // 06:plum
    item := pq.Pop().(*pgo.Item) // 05:orange
    item := pq.Pop().(*pgo.Item) // 04:pear
    item := pq.Pop().(*pgo.Item) // 03:banana
    // ... 

Network

IP2Long/Long2Ip

long, _ := pgo.IP2long("176.59.34.117") // 2956665461

ip := pgo.Long2ip(2956665461) // "176.59.34.117"

GetMxrr

isMx, mxs, _ := pgo.GetMxrr("google.com") // e.g.: true, n

Math

Rand

rand := pgo.Rand(1, 100)

Crypto

Md5

pgo.Md5("abc123") // e99a18c428cb38d5f260853678922e03

Sha1

pgo.Sha1("abc123") // 6367c48dd193d56ea7b0baad25b19455e529f5ee

Sha2

pgo.Sha2("abc123") // 6ca13d52ca70c883e0f0bb101e425a89e8624de51db2d2392593af6a84118090


*Note that all licence references and agreements mentioned in the pgo README section above are relevant to that project's source code only.