in freemarker-docgen-core/src/main/java/org/freemarker/docgen/core/PrintTextWithDocgenSubstitutionsDirective.java [458:487]
private void cutAndInsertContent(InsertDirectiveArgs args, String content)
throws TemplateException, IOException {
if (args.from != null) {
Matcher matcher = args.from.matcher(content);
if (matcher.find()) {
String remaining = content.substring(matcher.start());
content = "[\u2026]"
+ (remaining.startsWith("\n") || remaining.startsWith("\r") ? "" : "\n")
+ remaining;
} else if (!args.fromOptional) {
throw newErrorInDocgenTag(
"\"from\" regular expression has no match in the file content: " + args.from);
}
}
if (args.to != null) {
Matcher matcher = args.to.matcher(content);
if (matcher.find()) {
String remaining = content.substring(0, matcher.start());
content = remaining
+ (remaining.endsWith("\n") || remaining.endsWith("\r") ? "" : "\n")
+ "[\u2026]";
} else if (!args.toOptional) {
throw newErrorInDocgenTag(
"\"to\" regular expression has no match in the file content: " + args.to);
}
}
HTMLOutputFormat.INSTANCE.output(content, out);
}