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#include <iostream>
#include <seqan/arg_parse.h>
struct ModifyStringOptions
{
unsigned period;
unsigned rangeBegin, rangeEnd;
bool toUppercase;
bool toLowercase;
seqan2::CharString text;
ModifyStringOptions() :
period(1), rangeBegin(0), rangeEnd(0),toUppercase(false),
toLowercase(false)
{}
};
seqan2::ArgumentParser::ParseResult
parseCommandLine(ModifyStringOptions & options, int argc, char const ** argv)
{
// Setup ArgumentParser.
seqan2::ArgumentParser parser("modify_string");
// We require one argument.
addArgument(parser, seqan2::ArgParseArgument(
seqan2::ArgParseArgument::STRING, "TEXT"));
// Define Options
addOption(parser, seqan2::ArgParseOption(
"i", "period", "Period to use for the index.",
seqan2::ArgParseArgument::INTEGER, "INT"));
setMinValue(parser, "period", "1");
setDefaultValue(parser, "period", "1");
addOption(parser, seqan2::ArgParseOption(
"r", "range", "Range of the text to modify.",
seqan2::ArgParseArgument::INTEGER, "INT", false, 2));
addOption(parser, seqan2::ArgParseOption(
"U", "uppercase", "Select to-uppercase as operation."));
addOption(parser, seqan2::ArgParseOption(
"L", "lowercase", "Select to-lowercase as operation."));
// Parse command line.
seqan2::ArgumentParser::ParseResult res = seqan2::parse(parser, argc, argv);
// Only extract options if the program will continue after parseCommandLine()
if (res != seqan2::ArgumentParser::PARSE_OK)
return res;
// Extract option values.
getOptionValue(options.period, parser, "period");
getOptionValue(options.rangeBegin, parser, "range", 0);
getOptionValue(options.rangeEnd, parser, "range", 1);
options.toUppercase = isSet(parser, "uppercase");
options.toLowercase = isSet(parser, "lowercase");
seqan2::getArgumentValue(options.text, parser, 0);
// If both to-uppercase and to-lowercase were selected then this is an error.
if (options.toUppercase && options.toLowercase)
{
std::cerr << "ERROR: You cannot specify both to-uppercase and to-lowercase!\n";
return seqan2::ArgumentParser::PARSE_ERROR;
}
return seqan2::ArgumentParser::PARSE_OK;
}
seqan2::CharString modifyString(seqan2::CharString const & text,
ModifyStringOptions const & options)
{
seqan2::CharString result;
if (options.toLowercase)
{
for (unsigned i = 0; i < length(text); ++i)
{
if (i >= options.rangeBegin && i < options.rangeEnd &&
(i % options.period == 0u))
appendValue(result, tolower(text[i]));
else
appendValue(result, text[i]);
}
}
else
{
for (unsigned i = 0; i < length(text); ++i)
{
if (i >= options.rangeBegin && i < options.rangeEnd &&
(i % options.period == 0u))
appendValue(result, toupper(text[i]));
else
appendValue(result, text[i]);
}
}
return result;
}
int main(int argc, char const ** argv)
{
// Parse the command line.
ModifyStringOptions options;
seqan2::ArgumentParser::ParseResult res = parseCommandLine(options, argc, argv);
// If parsing was not successful then exit with code 1 if there were errors.
// Otherwise, exit with code 0 (e.g. help was printed).
if (res != seqan2::ArgumentParser::PARSE_OK)
return res == seqan2::ArgumentParser::PARSE_ERROR;
std::cout << modifyString(options.text, options) << '\n';
return 0;
}
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