static void scanfile(Scanner input, String filename, Pattern pattern) {
int numLines = 1;
while (input.hasNextLine()) {
String line = input.nextLine();
boolean matches = pattern.matcher(line).find();
if (matches && !options.reverse_match) {
messages.exit_status = messages.EXIT_SUCCESS;
if (options.filename_only) {
out.printf(filename + "\n");
return;
} else if (options.number_lines) {
out.printf(numLines + ": " + "%s:%s%n", filename, line);
} else {
out.printf("%s:%s%n", filename, line);
}
} else if (!matches && options.reverse_match) {
if (options.number_lines) {
out.printf(numLines + ": " + "%s:%s%n", filename, line);
} else {
out.printf("%s:%s%n", filename, line);
}
messages.exit_status = messages.EXIT_SUCCESS;
}
numLines++;
}
}
static void compileRegex(String[] args) {
int i;
if (optionsPresent) {
i = 1;
} else {
i = 0;
}
options.regex = args[i];
try {
if (options.insensitive) {
options.pattern = Pattern.compile(options.regex, Pattern.CASE_INSENSITIVE);
} else {
options.pattern = Pattern.compile(options.regex);
}
} catch (PatternSyntaxException e) {
messages.die(e.getMessage());
}
}