/**
 @file stringutils.h
 
 @maintainer Morgan McGuire, matrix@graphics3d.com
 
 @author  2000-09-09
 @edited  2002-11-30
 */

#ifndef G3D_STRINGUTILS_H
#define G3D_STRINGUTILS_H

#include "G3D/Array.h"
#include <string>

namespace G3D {

extern const char* NEWLINE;

/**
 Returns true if the test string begins with the pattern string.
 */
bool beginsWith(
    const std::string&          test,
    const std::string&          pattern);

/**
 Returns true if the test string ends with the pattern string.
 */
bool endsWith(
    const std::string&          test,
    const std::string&          pattern);

/**
 Produces a new string that is the input string
 wrapped at a certain number of columns (where
 the line is broken at the latest space before the
 column limit.)  Platform specific NEWLINEs
 are inserted to wrap.
 */
std::string wordWrap(
    const std::string&          input,
    int                         numCols);

/**
 A comparison function for passing to Array::sort.
 */
int stringCompare(
    const std::string&          s1,
    const std::string&          s2);

int stringPtrCompare(
    const std::string*          s1,
    const std::string*          s2);

/**
 Returns a new string that is an uppercase version of x.
 */
std::string toUpper(
    const std::string&          x);

std::string toLower(
    const std::string&          x);

/**
 Splits x at each occurance of splitChar.
 */
G3D::Array<std::string> stringSplit(
    const std::string&          x,
    char                        splitChar);

/**
 joinChar is not inserted at the beginning or end, just in between
 elements.
 */
std::string stringJoin(
    const G3D::Array<std::string>&   a,
    char                        joinChar);

std::string stringJoin(
    const G3D::Array<std::string>&   a,
    const std::string&               joinStr);

/**
 Strips whitespace from both ends of the string.
 */
std::string trimWhitespace(
    const std::string&              s);

/** These standard C functions are renamed for clarity/naming
   conventions and to return bool, not int.
   */
inline bool isWhiteSpace(const char c) {
    return isspace(c) != 0;
}

/** These standard C functions are renamed for clarity/naming
   conventions and to return bool, not int.
   */
inline bool isNewline(const char c) {
    return (c == '\n') || (c == '\r');
}

/** These standard C functions are renamed for clarity/naming
   conventions and to return bool, not int.
   */
inline bool isDigit(const char c) {
    return isdigit(c) != 0;
}

/** These standard C functions are renamed for clarity/naming
   conventions and to return bool, not int.
   */
inline bool isLetter(const char c) {
    return isalpha(c) != 0;
}
}; // namespace

#endif

