class parses and other stuff

1 files changed, 33 insertions, 1 deletions

diff --git a/utils/utils.go b/utils/utils.go
index 46b707c..d25fa36 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -1,6 +1,11 @@
 package utils
 
-import "os"
+import (
+        "os"
+        "unsafe"
+
+        "github.com/bisaxa/bitreader"
+)
 
 func CheckError(e error) {
         if e != nil {
@@ -13,3 +18,30 @@ func ReadByteFromFile(file *os.File, size int32) []byte {
         file.Read(tmp)
         return tmp
 }
+
+func ReadStringFromFile(file *os.File) string {
+        var output string
+        reader := bitreader.Reader(file, true)
+        for {
+                value, err := reader.ReadBytes(1)
+                CheckError(err)
+                if value == 0 {
+                        break
+                }
+                output += string(rune(value))
+        }
+        return output
+}
+
+func FloatArrFromBytes(byteArr []byte) []float32 {
+        if len(byteArr) == 0 {
+                return nil
+        }
+        l := len(byteArr) / 4
+        ptr := unsafe.Pointer(&byteArr[0])
+        // It is important to keep in mind that the Go garbage collector
+        // will not interact with this data, and that if src if freed,
+        // the behavior of any Go code using the slice is nondeterministic.
+        // Reference: https://github.com/golang/go/wiki/cgo#turning-c-arrays-into-go-slices
+        return (*[1 << 26]float32)((*[1 << 26]float32)(ptr))[:l:l]
+}