whatcanGOwrong

go/pkg/mod/github.com/cilium/ebpf@v0.11.0/cmd/bpf2go/tools.go

@@ -0,0 +1,94 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"runtime/debug"
+	"strings"
+	"unicode"
+	"unicode/utf8"
+)
+
+func splitCFlagsFromArgs(in []string) (args, cflags []string) {
+	for i, arg := range in {
+		if arg == "--" {
+			return in[:i], in[i+1:]
+		}
+	}
+
+	return in, nil
+}
+
+func splitArguments(in string) ([]string, error) {
+	var (
+		result  []string
+		builder strings.Builder
+		escaped bool
+		delim   = ' '
+	)
+
+	for _, r := range strings.TrimSpace(in) {
+		if escaped {
+			builder.WriteRune(r)
+			escaped = false
+			continue
+		}
+
+		switch r {
+		case '\\':
+			escaped = true
+
+		case delim:
+			current := builder.String()
+			builder.Reset()
+
+			if current != "" || delim != ' ' {
+				// Only append empty words if they are not
+				// delimited by spaces
+				result = append(result, current)
+			}
+			delim = ' '
+
+		case '"', '\'', ' ':
+			if delim == ' ' {
+				delim = r
+				continue
+			}
+
+			fallthrough
+
+		default:
+			builder.WriteRune(r)
+		}
+	}
+
+	if delim != ' ' {
+		return nil, fmt.Errorf("missing `%c`", delim)
+	}
+
+	if escaped {
+		return nil, errors.New("unfinished escape")
+	}
+
+	// Add the last word
+	if builder.Len() > 0 {
+		result = append(result, builder.String())
+	}
+
+	return result, nil
+}
+
+func toUpperFirst(str string) string {
+	first, n := utf8.DecodeRuneInString(str)
+	return string(unicode.ToUpper(first)) + str[n:]
+}
+
+func currentModule() string {
+	bi, ok := debug.ReadBuildInfo()
+	if !ok {
+		// Fall back to constant since bazel doesn't support BuildInfo.
+		return "github.com/cilium/ebpf"
+	}
+
+	return bi.Main.Path
+}