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Diffstat (limited to 'vendor/github.com/go-git/gcfg/types/scan.go')
-rw-r--r-- | vendor/github.com/go-git/gcfg/types/scan.go | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/vendor/github.com/go-git/gcfg/types/scan.go b/vendor/github.com/go-git/gcfg/types/scan.go new file mode 100644 index 000000000..db2f6ed3c --- /dev/null +++ b/vendor/github.com/go-git/gcfg/types/scan.go @@ -0,0 +1,23 @@ +package types + +import ( + "fmt" + "io" + "reflect" +) + +// ScanFully uses fmt.Sscanf with verb to fully scan val into ptr. +func ScanFully(ptr interface{}, val string, verb byte) error { + t := reflect.ValueOf(ptr).Elem().Type() + // attempt to read extra bytes to make sure the value is consumed + var b []byte + n, err := fmt.Sscanf(val, "%"+string(verb)+"%s", ptr, &b) + switch { + case n < 1 || n == 1 && err != io.EOF: + return fmt.Errorf("failed to parse %q as %v: %v", val, t, err) + case n > 1: + return fmt.Errorf("failed to parse %q as %v: extra characters %q", val, t, string(b)) + } + // n == 1 && err == io.EOF + return nil +} |