Documentation
¶
Overview ¶
Package contentdetect provides content type detection using multiple methods: Content-Type headers, magic bytes (file signatures), and byte analysis heuristics.
This package can be used independently from OmniProxy.
Example usage:
// Quick check
if contentdetect.IsBinary("", data) {
fmt.Println("Binary content detected")
}
// With Content-Type hint
if contentdetect.IsBinary("image/png", data) {
fmt.Println("Binary content detected")
}
// Detailed detection
info := contentdetect.Detect("", data)
fmt.Printf("Binary: %v, MIME: %s, Method: %s\n", info.IsBinary, info.MIMEType, info.Method)
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func IsBinary ¶
IsBinary returns true if the content appears to be binary. contentType is optional and can be empty.
func IsBinaryWithOptions ¶
IsBinaryWithOptions returns true if the content appears to be binary using custom options.
Types ¶
type ContentInfo ¶
type ContentInfo struct {
// IsBinary is true if the content appears to be binary
IsBinary bool
// IsText is true if the content appears to be text
IsText bool
// MIMEType is the detected or provided MIME type
MIMEType string
// Extension is the likely file extension (e.g., "png", "json")
Extension string
// Method indicates how the detection was made: "content-type", "magic", "heuristic"
Method string
// Confidence is a value from 0.0 to 1.0 indicating detection confidence
Confidence float64
}
ContentInfo contains detailed information about detected content.
func Detect ¶
func Detect(contentType string, data []byte) ContentInfo
Detect analyzes content and returns detailed information. contentType is optional and can be empty.
func DetectWithOptions ¶
func DetectWithOptions(contentType string, data []byte, opts *Options) ContentInfo
DetectWithOptions analyzes content with custom options.
type Options ¶
type Options struct {
// TrustContentType trusts the Content-Type header if provided and recognized
TrustContentType bool
// HighBitThreshold is the ratio of non-printable bytes to consider content binary (default: 0.30)
HighBitThreshold float64
// CheckBytes is the number of bytes to examine for detection (default: 512)
CheckBytes int
}
Options configures the detection behavior.
func DefaultOptions ¶
func DefaultOptions() *Options
DefaultOptions returns the default detection options.
Source Files