Mortdecai
b3bbd55551
Implements ExtractImages() which scans filter stdout line-by-line, extracts valid OSC 9 image markers into ImageRef structs, and replaces marker lines with null-delimited placeholders (\x00IMG:N\x00). Invalid markers (missing path) pass through unchanged. Also clarifies the Index field comment in ImageRef to indicate it is set by ExtractImages, not ParseImageOSC. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
63 lines
1.3 KiB
Go
63 lines
1.3 KiB
Go
package parse
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import (
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"bytes"
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"strings"
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)
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// ImageRef represents an image referenced by a filter via OSC 9 marker.
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type ImageRef struct {
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Index int // Sequential position in the message; set by ExtractImages, not ParseImageOSC
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Path string // Absolute path to image file on disk
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Alt string // Alt text fallback
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}
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var oscImagePrefix = []byte("\033]9;image:")
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// ParseImageOSC parses an OSC 9 image marker from a byte slice.
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// Format: \033]9;image:path=/tmp/foo.png;alt=text\007
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// The marker may appear anywhere in the line.
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// Returns the parsed reference and whether parsing succeeded.
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func ParseImageOSC(line []byte) (*ImageRef, bool) {
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start := bytes.Index(line, oscImagePrefix)
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if start == -1 {
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return nil, false
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}
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rest := line[start+len(oscImagePrefix):]
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// Find string terminator: BEL (\007) or ST (ESC \)
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end := -1
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for i := 0; i < len(rest); i++ {
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if rest[i] == '\007' {
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end = i
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break
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}
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if rest[i] == '\033' && i+1 < len(rest) && rest[i+1] == '\\' {
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end = i
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break
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}
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}
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if end == -1 {
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return nil, false
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}
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params := string(rest[:end])
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ref := &ImageRef{}
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for _, pair := range strings.Split(params, ";") {
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k, v, ok := strings.Cut(pair, "=")
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if !ok {
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continue
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}
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switch k {
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case "path":
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ref.Path = v
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case "alt":
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ref.Alt = v
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}
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}
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if ref.Path == "" {
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return nil, false
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}
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return ref, true
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}
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