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#include <iostream>
#include <seqan/arg_parse.h>
struct ModifyStringOptions
{
unsigned period;
bool toUppercase;
bool toLowercase;
seqan::CharString text;
ModifyStringOptions() :
period(1), toUppercase(false), toLowercase(false)
{}
};
seqan::ArgumentParser::ParseResult
parseCommandLine(ModifyStringOptions & options, int argc, char const ** argv)
{
// Setup ArgumentParser.
seqan::ArgumentParser parser("modify_string");
// Set short description, version, and date.
setShortDescription(parser, "String Modifier");
setVersion(parser, "1.0");
setDate(parser, "July 2012");
// Define usage line and long description.
addUsageLine(parser,
"[\\fIOPTIONS\\fP] \"\\fITEXT\\fP\"");
addDescription(parser,
"This program allows simple character modifications to "
"each i-th character.");
// We require one argument.
addArgument(parser, seqan::ArgParseArgument(
seqan::ArgParseArgument::STRING, "TEXT"));
// Define Options -- Section Modification Options
addSection(parser, "Modification Options");
addOption(parser, seqan::ArgParseOption(
"i", "period", "Period to use for the index.",
seqan::ArgParseArgument::INTEGER, "INT"));
setDefaultValue(parser, "period", "1");
addOption(parser, seqan::ArgParseOption(
"U", "uppercase", "Select to-uppercase as operation."));
addOption(parser, seqan::ArgParseOption(
"L", "lowercase", "Select to-lowercase as operation."));
// Add Examples Section.
addTextSection(parser, "Examples");
addListItem(parser,
"\\fBmodify_string\\fP \\fB-U\\fP \\fIveryverylongword\\fP",
"Print upper case version of \"veryverylongword\"");
addListItem(parser,
"\\fBmodify_string\\fP \\fB-L\\fP \\fB-i\\fP \\fI3\\fP "
"\\fIveryverylongword\\fP",
"Print \"veryverylongword\" with every third character "
"converted to upper case.");
// Parse command line.
seqan::ArgumentParser::ParseResult res = seqan::parse(parser, argc, argv);
// Only extract options if the program will continue after parseCommandLine()
if (res != seqan::ArgumentParser::PARSE_OK)
return res;
// Extract option values.
getOptionValue(options.period, parser, "period");
options.toUppercase = isSet(parser, "uppercase");
options.toLowercase = isSet(parser, "lowercase");
seqan::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 seqan::ArgumentParser::PARSE_ERROR;
}
return seqan::ArgumentParser::PARSE_OK;
}
seqan::CharString modifyString(seqan::CharString const & text,
ModifyStringOptions const & options)
{
seqan::CharString result;
if (options.toLowercase)
{
for (unsigned i = 0; i < length(text); ++i)
appendValue(result, tolower(text[i]));
}
else
{
for (unsigned i = 0; i < length(text); ++i)
appendValue(result, toupper(text[i]));
}
return result;
}
int main(int argc, char const ** argv)
{
// Parse the command line.
ModifyStringOptions options;
seqan::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 != seqan::ArgumentParser::PARSE_OK)
return res == seqan::ArgumentParser::PARSE_ERROR;
std::cout << modifyString(options.text, options) << '\n';
return 0;
}
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