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Factor mtime functions info github.com/ncw/swift

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This commit is contained in:
Nick Craig-Wood 2012-11-27 22:04:04 +00:00
parent 08c3e9fd57
commit 73844ae022
2 changed files with 2 additions and 158 deletions
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54
swiftsync.go
View File

@ -11,8 +11,6 @@ import (
"os"
"path/filepath"
"runtime/pprof"
"strconv"
"strings"
)
// Globals
@ -101,58 +99,6 @@ func walk(root string) FsObjects {
return files
}
// Turns a number of ns into a floating point string in seconds
//
// Trims trailing zeros and guaranteed to be perfectly accurate
func nsToFloatString(ns int64) string {
if ns < 0 {
return "-" + nsToFloatString(-ns)
}
result := fmt.Sprintf("%010d", ns)
split := len(result) - 9
result, decimals := result[:split], result[split:]
decimals = strings.TrimRight(decimals, "0")
if decimals != "" {
result += "."
result += decimals
}
return result
}
// Turns a floating point string in seconds into a ns integer
//
// Guaranteed to be perfectly accurate
func floatStringToNs(s string) (ns int64, err error) {
if s != "" && s[0] == '-' {
ns, err = floatStringToNs(s[1:])
return -ns, err
}
point := strings.IndexRune(s, '.')
if point >= 0 {
tail := s[point+1:]
if len(tail) > 0 {
if len(tail) > 9 {
tail = tail[:9]
}
uns, err := strconv.ParseUint(tail, 10, 64)
if err != nil {
return 0, err
}
ns = int64(uns)
for i := 9 - len(tail); i > 0; i-- {
ns *= 10
}
}
s = s[:point]
}
secs, err := strconv.ParseInt(s, 10, 64)
if err != nil {
return 0, err
}
ns += int64(1000000000) * secs
return ns, nil
}
// syntaxError prints the syntax
func syntaxError() {
fmt.Fprintf(os.Stderr, `Sync files and directores to and from swift

106
swiftsync_test.go
View File

@ -5,108 +5,6 @@ import (
"testing"
)
func TestNsToFloatString(t *testing.T) {
for _, d := range []struct {
ns int64
fs string
}{
{0, "0"},
{1, "0.000000001"},
{1000, "0.000001"},
{1000000, "0.001"},
{100000000, "0.1"},
{1000000000, "1"},
{10000000000, "10"},
{12345678912, "12.345678912"},
{12345678910, "12.34567891"},
{12345678900, "12.3456789"},
{12345678000, "12.345678"},
{12345670000, "12.34567"},
{12345600000, "12.3456"},
{12345000000, "12.345"},
{12340000000, "12.34"},
{12300000000, "12.3"},
{12000000000, "12"},
{10000000000, "10"},
{1347717491123123123, "1347717491.123123123"},
} {
if nsToFloatString(d.ns) != d.fs {
t.Error("Failed", d.ns, "!=", d.fs)
}
if d.ns > 0 && nsToFloatString(-d.ns) != "-"+d.fs {
t.Error("Failed on negative", d.ns, "!=", d.fs)
}
}
}
func TestFloatStringToNs(t *testing.T) {
for _, d := range []struct {
ns int64
fs string
}{
{0, "0"},
{0, "0."},
{0, "0.0"},
{0, "0.0000000001"},
{1, "0.000000001"},
{1000, "0.000001"},
{1000000, "0.001"},
{100000000, "0.1"},
{100000000, "0.10"},
{100000000, "0.1000000001"},
{1000000000, "1"},
{1000000000, "1."},
{1000000000, "1.0"},
{10000000000, "10"},
{12345678912, "12.345678912"},
{12345678912, "12.3456789129"},
{12345678912, "12.34567891299"},
{12345678910, "12.34567891"},
{12345678900, "12.3456789"},
{12345678000, "12.345678"},
{12345670000, "12.34567"},
{12345600000, "12.3456"},
{12345000000, "12.345"},
{12340000000, "12.34"},
{12300000000, "12.3"},
{12000000000, "12"},
{10000000000, "10"},
// This is a typical value which has more bits in than a float64
{1347717491123123123, "1347717491.123123123"},
} {
ns, err := floatStringToNs(d.fs)
if err != nil {
t.Error("Failed conversion", err)
}
if ns != d.ns {
t.Error("Failed", d.fs, "!=", d.ns, "was", ns)
}
if d.ns > 0 {
ns, err := floatStringToNs("-" + d.fs)
if err != nil {
t.Error("Failed conversion", err)
}
if ns != -d.ns {
t.Error("Failed on negative", -d.ns, "!=", "-"+d.fs)
}
}
}
// These are expected to produce errors
for _, fs := range []string{
"",
".0",
" 1",
"- 1",
"- 1",
"1.-1",
"1.0.0",
"1x0",
} {
ns, err := floatStringToNs(fs)
if err == nil {
t.Error("Didn't produce expected error", fs, ns)
}
}
func TestFIXME(t *testing.T) {
// FIXME test something!
}