Merge pull request #3 from misterunix/addion

Added strings to jsonio and updated the readme

README.md

@@ -1,7 +1,9 @@
 # sniffle
 
 What a name right? When creating this repo Github showed. 
+
 ```Great repository names are short and memorable. Need inspiration? How about shiny-sniffle?```
+
 And that cracked me up, so I chose sniffle. What the heck right?
 
 ## What is it?
@@ -12,25 +14,27 @@ I have never made a public module before and wanted to give it a shot and see wh
 
 ## What is there?
 - Hashing functions.
-  - file hash
-  - string hash
+  - Return the MD5, SHA256 or SHA512 of a file.
+  - Return the MD5, SHA256 or SHA512 of a string.
 - JSON functions - this is the big one for me. I use JSON a lot!
-  - write a slice of a struct to a file
-  - read a file into a slice of a struct
+  - write a slice of a struct or a struct to a file
+  - write a slice of a struct or a struct to a string
+  - read a file into a slice of a struct or a struct
+  - read a string into a slive of a struct or a struct
 - CPU and system functions.
-  - uses on go only packages
+  - uses on go packages only
   - gets CPU cores and type
   - gets os and pid
   - gets Go version and number of go routines. 
-  - This will get more as I need them.
+  - More functions will be added over time.
 - String 
-  - Left justify with padding.
-  - Right justify with padding.
-  - Center with padded, optional padding on the right.
+  - Left justify a string padding out to a set width.
+  - Right justify a string with padding to a set width.
+  - Center a string with padding, optional padding on the right.
   - Split lines at width and/or word boundry.
 
 ## Why in the world did you do this. 
-Well, as I said, it's stuff I use over and over again. We all know there are 100 different ways to do something in go and this is just my way. :beer:
+Well, as I said, it's stuff I use over and over again. We all know there are 100 different ways to do something in Go and this is just my way. :beer:
 
 ## Contribs? 
 Sure, if they only require the standard Go library. Let's do it. 

jsonio/jsonio.go

@@ -10,9 +10,26 @@ import (
 	"errors"
 	"io/ioutil"
 	"os"
+	"strings"
 )
 
-// LoadJSon : Loads a slice of a struct data from JSon file.
+// LoadJSonFromString : Load a stuct or a slice of structs from string s
+func LoadJSonFromString(s string, js interface{}) error {
+	if len(s) <= 0 {
+		return errors.New("string is empty")
+	}
+
+	r := strings.NewReader(s)
+	decoder := json.NewDecoder(r)
+	err := decoder.Decode(&js)
+	if err != nil {
+		return (err)
+	}
+
+	return nil
+}
+
+// LoadJSon : Loads a struct or a slice of a struct data from JSon file.
 func LoadJSon(filename string, js interface{}) error {
 
 	if !fileExists(filename) {
@@ -33,7 +50,16 @@ func LoadJSon(filename string, js interface{}) error {
 	return nil
 }
 
-// SaveJSon : Saves a struct slice to a file. Creating it if needed.
+// SaveJSonToString : Saves struct or a slice to a string
+func SaveJSonToString(js interface{}) (string, error) {
+	rbytes, err := json.MarshalIndent(js, "", " ")
+	if err != nil {
+		return "", err
+	}
+	return string(rbytes), nil
+}
+
+// SaveJSon : Saves a struct or a struct slice to a file. Creating it if needed.
 func SaveJSon(filename string, js interface{}) error {
 	file, _ := json.MarshalIndent(js, "", " ")
 	err := ioutil.WriteFile(filename, file, 0644)

jsonio/jsonio_test.go

@@ -2,6 +2,7 @@ package jsonio
 
 import (
 	"os"
+	"strings"
 	"testing"
 )
 
@@ -11,7 +12,13 @@ type TmpStruct struct {
 	C bool
 }
 
+type Example struct {
+	Text string
+	MD5  string
+}
+
 var TheStruct []TmpStruct
+var Ejson Example
 
 func TestBoth(t *testing.T) {
 
@@ -50,4 +57,26 @@ func TestBoth(t *testing.T) {
 	if TheStruct[2].A != 30 || TheStruct[2].B != "Three" || TheStruct[2].C != true {
 		t.Errorf("LoadJSon want %d %s %t got %d %s %t", 30, "Three", true, TheStruct[2].A, TheStruct[2].B, TheStruct[2].C)
 	}
+
+	es := "{ \"text\": \"example_text\", \"md5\": \"fa4c6baa0812e5b5c80ed8885e55a8a6\" }"
+	err = LoadJSonFromString(es, &Ejson)
+	if err != nil {
+		t.Errorf("LoadJSonFromString returned an error: %s", err)
+	}
+	if strings.Compare(Ejson.Text, "example_text") != 0 || strings.Compare(Ejson.MD5, "fa4c6baa0812e5b5c80ed8885e55a8a6") != 0 {
+		t.Errorf("LoadJSonFromString wanted text:%s md5:%s but got text:%s md5:%s", "example_text", "fa4c6baa0812e5b5c80ed8885e55a8a6", Ejson.Text, Ejson.MD5)
+	}
+
+	// Wow this test was hard!!!!
+	es = `{
+ "Text": "example_text",
+ "MD5": "fa4c6baa0812e5b5c80ed8885e55a8a6"
+}`
+	rs, err := SaveJSonToString(Ejson)
+	if err != nil {
+		t.Errorf("SaveJSonToString returned an error: %s", err)
+	}
+	if strings.Compare(rs, es) != 0 {
+		t.Errorf("SaveJSonToString: wanted\n%s got \n%s", es, rs)
+	}
 }