/* Strings manipulation
 *
 * (c) 2002-2005, OLO
 * This file is provided as is (no warranties).
 */

#if defined _string_included
  #endinput
#endif
#define _string_included

/* Checks if source contains string. On success function
* returns position in source, on failure returns -1. */
native contain(const source[], const string[]);

/* Checks if source contains string with case ignoring. On success function
* returns position in source, on failure returns -1. */
native containi(const source[], const string[]);

/* Replaces given string with another in given text. */
native replace(text[], len, const what[], const with[]);

/* Adds one string to another. Last parameter different from 0, specifies
* how many chars we want to add. Function returns number of all merged chars. */
native add(dest[], len, const src[], max=0);

/* Fills string with given format and parameters.
* Function returns number of copied chars.
* Example: format(dest, "Hello %s. You are %d years old", "Tom", 17). */
native format(output[], len, const format[], {Float,_}:...);

/* Gets parameters from function as formatted string. */
native format_args(output[], len, pos=0);

/* Converts number to string. */
native num_to_str(num, string[], len);
native numtostr(num, string[], len);

/* Converts string to number. */
native str_to_num(const string[]);
native strtonum(const string[]);

/* Checks if two strings equal. If len var is set
* then there are only c chars compared. */
native equal(const a[], const b[], c=0);

/* Checks if two strings equal with case ignoring. 
* If len var is set then there are only c chars compared. */
native equali(const a[], const b[], c=0);

/* Copies one string to another. By len var
*  you may specify max. number of chars to copy. */
native copy(dest[], len, const src[]);

/* Copies one string to another until char ch is found. 
*  By len var you may specify max. number of chars to copy. */
native copyc(dest[], len, const src[], ch);

/* Sets string with given character. */
native setc(src[], len, ch);

/* Gets parameters from text.
* Example: to split text: "^"This is^" the best year",
* call function like this: parse(text,arg1,len1,arg2,len2,arg3,len3,arg4,len4)
* and you will get: "This is", "the", "best", "year"
* Function returns number of parsed parameters. */
native parse(const text[], ...);

/* Converts all chars in string to lower case. */
native strtolower(string[]);

/* Converts all chars in string to upper case. */
native strtoupper(string[]);

/* Returns true when value is digit. */
native isdigit(ch);

/* Returns true when value is letter. */
native isalpha(ch);

/* Returns true when value is space. */
native isspace(ch);

/* Returns true when value is letter or digit. */
native isalnum(ch);
