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-rw-r--r--src/os/str.go33
1 files changed, 33 insertions, 0 deletions
diff --git a/src/os/str.go b/src/os/str.go
new file mode 100644
index 0000000..cba9fa3
--- /dev/null
+++ b/src/os/str.go
@@ -0,0 +1,33 @@
+// Copyright 2009 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.
+
+// Simple conversions to avoid depending on strconv.
+
+package os
+
+// Convert integer to decimal string
+func itoa(val int) string {
+ if val < 0 {
+ return "-" + uitoa(uint(-val))
+ }
+ return uitoa(uint(val))
+}
+
+// Convert unsigned integer to decimal string
+func uitoa(val uint) string {
+ if val == 0 { // avoid string allocation
+ return "0"
+ }
+ var buf [20]byte // big enough for 64bit value base 10
+ i := len(buf) - 1
+ for val >= 10 {
+ q := val / 10
+ buf[i] = byte('0' + val - q*10)
+ i--
+ val = q
+ }
+ // val < 10
+ buf[i] = byte('0' + val)
+ return string(buf[i:])
+}