Function parseUserAgentFull

internal/bridge/register.go:114–171

parseUserAgentFull extracts agent name, version, and OS details from a User-Agent string. Supported formats: "codex_cli_rs/0.112.0 (Windows 10.0.26200; x86_64) WindowsTerminal" "claude-code/1.0.0 (Linux 6.1.0; x86_64)" "codex-cli"

(ua string)

//	"claude-code/1.0.0 (Linux 6.1.0; x86_64)"
//	"codex-cli"
func parseUserAgentFull(ua string) agentInfo {
	ua = strings.TrimSpace(ua)
	if ua == "" {
		return agentInfo{name: "unknown-agent", osName: "unknown"}
	}

	info := agentInfo{}

	// Extract parenthesized section: (OS Version; Arch)
	if m := uaParenRegex.FindStringSubmatch(ua); len(m) > 1 {
		parts := strings.Split(m[1], ";")
		if len(parts) >= 1 {
			osField := strings.TrimSpace(parts[0])
			// "Windows 10.0.26200" → osName="Windows", osVersion="10.0.26200"
			if spIdx := strings.IndexByte(osField, ' '); spIdx > 0 {
				info.osName = osField[:spIdx]
				info.osVersion = osField[spIdx+1:]
			} else {
				info.osName = osField
			}
		}
		if len(parts) >= 2 {
			info.arch = strings.TrimSpace(parts[1])
		}
	}

	// Extract text after closing paren as terminal info.
	if closeIdx := strings.LastIndexByte(ua, ')'); closeIdx > 0 && closeIdx < len(ua)-1 {
		info.terminal = strings.TrimSpace(ua[closeIdx+1:])
	}

	// Extract name/version from the part before the paren.
	prefix := ua
	if openIdx := strings.IndexByte(ua, '('); openIdx > 0 {
		prefix = strings.TrimSpace(ua[:openIdx])
	}

	// Try "name/version" format.
	if slashIdx := strings.IndexByte(prefix, '/'); slashIdx > 0 {
		info.name = prefix[:slashIdx]
		info.version = prefix[slashIdx+1:]
	} else if parts := strings.SplitN(prefix, " ", 2); len(parts) == 2 {
		info.name = parts[0]
		info.version = parts[1]
	} else {
		info.name = prefix
	}

	// Defaults.
	if info.osName == "" {
		info.osName = "unknown"
	}
	if info.version == "" {
		info.version = "unknown"
	}

	return info
}