// vim: set ts=4 sw=4 tw=99 noet:
//
// AMX Mod X, based on AMX Mod by Aleksander Naszko ("OLO").
// Copyright (C) The AMX Mod X Development Team.
//
// This software is licensed under the GNU General Public License, version 3 or higher.
// Additional exceptions apply. For full license details, see LICENSE.txt or visit:
// https://alliedmods.net/amxmodx-license
//
// String Manipulation
//
#if defined _string_included
#endinput
#endif
#define _string_included
#define charsmax(%1) (sizeof(%1)-1)
/**
* @global Unless otherwise noted, all string functions which take in a
* writable buffer and maximum length should NOT have the null terminator INCLUDED
* in the length. This means that this is valid:
* copy(string, charsmax(string), ...)
*/
/**
* Calculates the length of a string.
*
* @param string String to check.
* @return Number of valid character bytes in the string.
*/
native strlen(const string[]);
/**
* Tests whether a string is found inside another string.
*
* @param source String to search in.
* @param string Substring to find inside the original string.
*
* @return -1 on failure (no match found). Any other value
* indicates a position in the string where the match starts.
*/
native contain(const source[], const string[]);
/**
* Tests whether a string is found inside another string with case ignoring.
*
* @param source String to search in.
* @param string Substring to find inside the original string.
*
* @return -1 on failure (no match found). Any other value
* indicates a position in the string where the match starts.
*/
native containi(const source[],const string[]);
/**
* Given a string, replaces the first occurrence of a search string with a
* replacement string.
*
* @param text String to perform search and replacements on.
* @param len Maximum length of the string buffer.
* @param what String to search for.
* @param with String to replace the search string with.
*
* @return The new string length after replacement, or 0 if no replacements were made.
*/
native replace(text[], len, const what[], const with[]);
/**
* Given a string, replaces all occurrences of a search string with a
* replacement string.
*
* @note Similar to replace_all() stock, but implemented as native and
* with different algorithm. This native doesn't error on bad
* buffer size and will smartly cut off the string in a way
* that pushes old data out.
*
* @note Only available in 1.8.3 and above.
*
* @param text String to perform search and replacements on.
* @param maxlength Maximum length of the string buffer.
* @param search String to search for.
* @param replace String to replace the search string with.
* @param caseSensitive If true (default), search is case sensitive.
*
* @return Number of replacements that were performed.
*/
native replace_string(text[], maxlength, const search[], const replace[], bool:caseSensitive=true);
/**
* Given a string, replaces the first occurrence of a search string with a
* replacement string.
*
* @note Similar to replace() native, but implemented with more options and
* with different algorithm. This native doesn't error on bad
* buffer size and will smartly cut off the string in a way
* that pushes old data out.
*
* @note Only available in 1.8.3 and above.
*
* @param text String to perform search and replacements on.
* @param maxlength Maximum length of the string buffer.
* @param search String to search for.
* @param replace String to replace the search string with.
* @param searchLen If higher than -1, its value will be used instead of
* a strlen() call on the search parameter.
* @param replaceLen If higher than -1, its value will be used instead of
* a strlen() call on the replace parameter.
* @param caseSensitive If true (default), search is case sensitive.
*
* @return Index into the buffer (relative to the start) from where
* the last replacement ended, or -1 if no replacements were
* made.
*/
native replace_stringex(text[], maxlength, const search[], const replace[], searchLen=-1, replaceLen=-1, bool:caseSensitive=true);
/**
* Concatenates one string onto another.
*
* @param dest String to append to.
* @param len Maximum length of entire buffer.
* @param src Source string to concatenate.
* @param max Number of characters to add.
*
* @return Number of of all merged characters.
*/
native add(dest[],len,const src[],max=0);
/**
* Formats a string according to the AMX Mod X format rules (see documentation).
*
* @note Example: format(dest, "Hello %s. You are %d years old", "Tom", 17).
* If any of your input buffers overlap with the destination buffer,
* format() falls back to a "copy-back" version as of 1.65. This is
* slower, so you should using a source string that is the same as
* the destination.
*
* @param output Destination string buffer.
* @param len Maximum length of output string buffer.
* @param format Formatting rules.
* @param ... Variable number of format parameters.
*
* @return Number of cells written.
*/
native format(output[], len, const format[], any:...);
/**
* Formats a string according to the AMX Mod X format rules (see documentation).
*
* @note Same as format(), except does not perform a "copy back" check.
* This means formatex() is faster, but DOES NOT ALLOW this type
* of call:
* formatex(buffer, len, "%s", buffer)
* formatex(buffer, len, buffer, buffer)
* formatex(buffer, len, "%s", buffer[5])
* This is because the output is directly stored into "buffer",
* rather than copied back at the end.
*
* @param output Destination string buffer.
* @param len Maximum length of output string buffer.
* @param format Formatting rules.
* @param ... Variable number of format parameters.
*
* @return Number of cells written.
*/
native formatex(output[], len, const format[], any:...);
/**
* Formats a string according to the AMX Mod X format rules (see documentation).
*
* @note This is the same as format(), except it grabs parameters from a
* parent parameter stack, rather than a local. This is useful for
* implementing your own variable argument functions.
*
* @note Replacement for format_args. Much faster and %L compatible.
* This works exactly like vsnprintf() from C.
* You must pass in the output buffer and its size,
* the string to format, and the number of the FIRST variable
* argument parameter. For example, for:
* function (a, b, c, ...)
* You would pass 4 (a is 1, b is 2, c is 3, et cetera).
* There is no vformatex().
*
* @param buffer Destination string buffer.
* @param len Maximum length of output string buffer.
* @param fmt Formatting rules.
* @param vararg Argument number which contains the '...' symbol.
* Note: Arguments start at 1.
* @return Number of bytes written.
*/
native vformat(buffer[], len, const fmt[], vararg);
/**
* Formats a string according to the AMX Mod X format rules (see documentation).
*
* @note Same as vformat(), except works in normal style dynamic natives.
* Instead of passing the format arg string, you can only pass the
* actual format argument number itself.
* If you pass 0, it will read the format string from an optional
* fifth parameter.
*
* @param buffer Destination string buffer.
* @param len Maximum length of output string buffer.
* @param fmt_arg Argument number which contains the format.
* @param vararg Argument number which contains the '...' symbol.
* Note: Arguments start at 1.
* @return Number of bytes written.
*/
native vdformat(buffer[], len, fmt_arg, vararg, ...);
/**
* Gets parameters from function as formated string.
*
* @param output Destination string buffer.
* @param len Maximum length of output string buffer.
* @param pos Argument number which contains the '...' symbol.
*
* @return Number of bytes written.
*/
native format_args(output[], len, pos = 0);
/**
* Converts an integer to a string.
*
* @param num Integer to convert.
* @param string Buffer to store string in.
* @param len Maximum length of string buffer.
*
* @return Number of cells written to buffer.
*/
native num_to_str(num,string[],len);
/**
* Converts a string to an integer.
*
* @param string String to convert.
* @return Integer conversion of string, or 0 on failure.
*/
native str_to_num(const string[]);
/**
* Parses the 'string' interpreting its content as an integral number of the specified 'base',
* which is returned as integer value. The function also sets the value of 'endPos' to point
* to the position of the first character after the number.
*
* This is the same as C++ strtol function with a difference on second param.
*
* The function first discards as many whitespace characters as necessary until the first
* non-whitespace character is found. Then, starting from this character, takes as many
* characters as possible that are valid following a syntax that depends on the 'base' parameter,
* and interprets them as a numerical value. Finally, a position of the first character following
* the integer representation in 'string' is stored in 'endPos'.
*
* If the value of 'base' is zero, the syntax expected is similar to that of integer constants,
* which is formed by a succession of :
* An optional sign character (+ or -)
* An optional prefix indicating octal or hexadecimal base ("0" or "0x"/"0X" respectively)
* A sequence of decimal digits (if no base prefix was specified) or either octal or hexadecimal digits if a specific prefix is present
*
* If the 'base' value is between 2 and 36, the format expected for the integral number is a succession
* of any of the valid digits and/or letters needed to represent integers of the specified radix
* (starting from '0' and up to 'z'/'Z' for radix 36). The sequence may optionally be preceded by
* a sign (either + or -) and, if base is 16, an optional "0x" or "0X" prefix.
*
* If the first sequence of non-whitespace characters in 'string' is not a valid integral number
* as defined above, or if no such sequence exists because either 'string' is empty or it contains
* only whitespace characters, no conversion is performed.
*
* @param string The string to parse.
* @param endPos The position of the first character following the number.
* On success and when containing only numbers, position is at the end of string, meaning equal to 'string' length.
* On failure, position is sets always to 0.
* @param base The numerical base (radix) that determines the valid characters and their interpretation.
* If this is 0, the base used is determined by the format in the sequence.
* @return On success, the function returns the converted integral number as integer value.
* If no valid conversion could be performed, a zero value is returned.
* If the value read is out of the range of representable values by a cell,
* the function returns 'cellmin' or 'cellmax'.
*/
native strtol(const string[], &endPos = 0, base = 0);
/**
* Parses the 'string' interpreting its content as an floating point number and returns its value as a float.
* The function also sets the value of 'endPos' to point to the position of the first character after the number.
*
* This is the same as C++ strtod function with a difference on second param.
*
* The function first discards as many whitespace characters as necessary until the first
* non-whitespace character is found. Then, starting from this character, takes as many
* characters as possible that are valid and interprets them as a numerical value.
* Finally, a position of the first character following the float representation in 'string'
* is stored in 'endPos'.
*
* If the first sequence of non-whitespace characters in 'string' is not a valid float number
* as defined above, or if no such sequence exists because either 'string' is empty or it contains
* only whitespace characters, no conversion is performed.
*
* @param string The string to parse.
* @param endPos The position of the first character following the number.
* On success and when containing only numbers, position is at the end of string, meaning equal to 'string' length.
* On failure, position is sets always to 0.
* @return On success, the function returns the converted floating point number as float value.
* If no valid conversion could be performed, a zero value is returned.
*/
native Float:strtof(const string[], &endPos = 0);
/**
* Converts a floating point number to a string.
*
* @param fl Floating point number to convert.
* @param string Buffer to store string in.
* @param len Maximum length of string buffer.
*
* @return Number of cells written to buffer.
*/
native float_to_str(Float:fl, string[], len);
/**
* Converts a string to a floating point number.
*
* @param string String to convert to a foat.
* @return Floating point result, or 0.0 on error.
*/
native Float:str_to_float(const string[]);
/**
* Returns whether two strings are equal.
*
* @param a First string (left).
* @param b Second string (right).
* @param c Number of characters to compare.
*
* @return True if equal, false otherwise.
*/
native equal(const a[],const b[],c=0);
/**
* Returns whether two strings are equal with case ignoring.
*
* @param a First string (left).
* @param b Second string (right).
* @param c Number of characters to compare.
*
* @return True if equal, false otherwise.
*/
native equali(const a[],const b[],c=0);
/**
* Copies one string to another string.
*
* @note If the destination buffer is too small to hold the source string, the
* destination will be truncated.
*
* @param dest Destination string buffer to copy to.
* @param len Destination buffer length.
* @param src Source string buffer to copy from.
*
* @return Number of cells written.
*/
native copy(dest[],len,const src[]);
/**
* Copies one string to another string until ch is found.
*
* @param dest Destination string buffer to copy to.
* @param len Destination buffer length.
* @param src Source string buffer to copy from.
* @param ch Character to search for.
*
* @return Number of cells written.
*/
native copyc(dest[],len,const src[],ch);
/**
* Sets string with given character.
*
* @param src Destination string buffer to copy to.
* @param len Destination buffer length.
* @param ch Character to set string.
*
* @noreturn
*/
native setc(src[],len,ch);
/**
* Gets parameters from text.
*
* @note 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.
*
* @param text String to parse.
* @param ... Variable number of format parameters.
*
* @return Number of parsed parameters.
*/
native parse(const text[], ... );
/**
* Breaks a string in two by token.
*
* @note Trimming spaces is buggy. Consider strtok2 instead.
*
* @note See argbreak() for doing this with parameters.
* Example:
* str1[] = This *is*some text
* strtok(str1, left, 24, right, 24, '*')
* left will be "This "
* Right will be "is*some text"
* If you use trimSpaces, all spaces are trimmed from Left.
*
* @param text String to tokenize
* @param Left Buffer to store left half
* @param leftLen Size of left buffer
* @param Right Buffer to store right half
* @param rightLen Size of right buffer
* @param token Token to split by
* @param trimSpaces Whether spaces are trimmed.
*
* @noreturn
*/
native strtok(const text[], Left[], leftLen, Right[], rightLen, token=' ', trimSpaces=0);
/**
* Below are the trim flags for strtok2
*
* You can specify how the left and right buffers will
* be trimmed by strtok2. LTRIM trims spaces from the
* left side. RTRIM trims from the right side.
*
* The defines TRIM_INNER, TRIM_OUTER and TRIM_FULL are
* shorthands for commonly used flag combinations.
*
* When the initial string is trimmed, using TRIM_INNER
* for all subsequent strtok2 calls will ensure that left
* and right are always trimmed from both sides.
*
* Examples:
* str1[] = " This is * some text "
* strtok2(str1, left, 24, right, 24, '*', TRIM_FULL)
* left will be "This is", right will be "some text"
*
* str2[] = " Here is | an | example "
* trim(str2)
* strtok2(str2, left, 24, right, 24, '|', TRIM_INNER)
* left will be "Here is", right will be "an | example"
* strtok2(right, left, 24, right, 24, '|', TRIM_INNER)
* left will be "an", right will be "example"
*
* str3[] = " One - more "
* strtok2(str3, left, 24, right, 24, '-', TRIM_OUTER)
* left will be "One ", right will be " more"
*
* str4[] = " Final . example "
* strtok2(str4, left, 24, right, 24, '.', LTRIM_LEFT|LTRIM_RIGHT)
* left will be "Final ", right will be "example "
*/
#define LTRIM_LEFT (1<<0)
#define RTRIM_LEFT (1<<1)
#define LTRIM_RIGHT (1<<2)
#define RTRIM_RIGHT (1<<3)
#define TRIM_INNER RTRIM_LEFT|LTRIM_RIGHT
#define TRIM_OUTER LTRIM_LEFT|RTRIM_RIGHT
#define TRIM_FULL TRIM_OUTER|TRIM_INNER
/**
* Breaks a string in two by token.
*
* @note Only available in 1.8.3 and above.
*
* @param text String to tokenize
* @param left Buffer to store left half
* @param llen Size of left buffer
* @param right Buffer to store right half
* @param rlen Size of right buffer
* @param token Token to split by
* @param trim Flags for trimming behavior, see above
*
* @return Returns position of token in string if found,
* -1 if token was not found
*/
native strtok2(const text[], left[], const llen, right[], const rlen, const token = ' ', const trim = 0);
/**
* Removes whitespace characters from the beginning and end of a string.
*
* @param text The string to trim.
* @return Number of bytes written.
*/
native trim(text[]);
/**
* Converts all chars in string to lower case.
*
* @param string The string to convert.
* @return Number of bytes written.
*/
native strtolower(string[]);
/**
* Converts all chars in string to upper case.
*
* @param string The string to convert.
* @return Number of bytes written.
*/
native strtoupper(string[]);
/**
* Make a string's first character uppercase.
*
* @param string The string to convert.
* @return 1 on success, otherwise 0.
*/
native ucfirst(string[]);
/**
* Returns whether a character is numeric.
*
* @note Multi-byte characters will always return false.
*
* @param ch Character to test.
* @return True if character is numeric, otherwise false.
*/
native isdigit(ch);
/**
* Returns whether a character is an ASCII alphabet character.
*
* @note Multi-byte characters will always return false.
*
* @param ch Character to test.
* @return True if character is alphabetical, otherwise false.
*/
native isalpha(ch);
/**
* Returns whether a character is whitespace.
*
* @note Multi-byte characters will always return false.
*
* @param ch Character to test.
* @return True if character is whitespace, otherwise false.
*/
native isspace(ch);
/**
* Returns whether a character is numeric or an ASCII alphabet character.
*
* @note Multi-byte characters will always return false.
*
* @param ch Character to test.
* @return True if character is numeric, otherwise false.
*/
native isalnum(ch);
/**
* Returns if a character is multi-byte or not.
*
* @note Only available in 1.8.3 and above.
*
* @param ch Character to test.
* @return 0 for a normal 7-bit ASCII character,
* otherwise number of bytes in multi-byte character.
*/
native is_char_mb(ch);
/**
* Returns whether an alphabetic character is uppercase.
*
* @note Only available in 1.8.3 and above.
* @note Multi-byte characters will always return false.
*
* @param ch Character to test.
* @return True if character is uppercase, otherwise false.
*/
native bool:is_char_upper(ch);
/**
* Returns whether an alphabetic character is lowercase.
*
* @note Only available in 1.8.3 and above.
* @note Multi-byte characters will always return false.
*
* @param ch Character to test.
* @return True if character is lowercase, otherwise false.
*/
native bool:is_char_lower(ch);
/**
* Returns whether a given string contains only digits.
* This returns false for zero-length strings.
*
* @param sString Character to test.
* @return True if string contains only digit, otherwise false.
*/
stock bool:is_str_num(const sString[])
{
new i = 0;
while (sString[i] && isdigit(sString[i]))
++i;
return sString[i] == 0 && i != 0;
}
/**
* Returns the number of bytes a character is using. This is
* for multi-byte characters (UTF-8). For normal ASCII characters,
* this will return 1.
*
* @note Only available in 1.8.3 and above.
*
* @param source Source input string.
* @return Number of bytes the current character uses.
*/
native get_char_bytes(const source[]);
/**
* Returns an uppercase character to a lowercase character.
*
* @note Only available in 1.8.3 and above.
*
* @param chr Characer to convert.
* @return Lowercase character on success,
* no change on failure.
*/
stock char_to_upper(chr)
{
if (is_char_lower(chr))
{
return (chr & ~(1<<5));
}
return chr;
}
/**
* Returns a lowercase character to an uppercase character.
*
* @note Only available in 1.8.3 and above.
*
* @param chr Characer to convert.
* @return Uppercase character on success,
* no change on failure.
*/
stock char_to_lower(chr)
{
if (is_char_upper(chr))
{
return (chr | (1<<5));
}
return chr;
}
/**
* Concatenates one string onto another.
*
* @param dest String to append to.
* @param source Source string to concatenate.
* @param maxlength Maximum length of entire buffer.
* @return Number of bytes written.
*/
native strcat(dest[], const source[], maxlength);
/**
* Tests whether a string is found inside another string.
*
* @param string String to search in.
* @param sub Substring to find inside the original string.
* @param ignorecase If true, search is case insensitive.
* If false (default), search is case sensitive.
* @param pos
* @return -1 on failure (no match found). Any other value
* indicates a position in the string where the match starts.
*/
native strfind(const string[], const sub[], ignorecase=0, pos=0);
/**
* Compares two strings lexographically.
*
* @param string1 First string (left).
* @param string2 Second string (right).
* @param ignorecase If true, comparison is case insensitive.
* If false (default), comparison is case sensitive.
* @return -1 if string1 < string2
* 0 if string1 == string2
* 1 if string1 > string2
*/
native strcmp(const string1[], const string2[], ignorecase=0);
/**
* Compares two strings parts lexographically.
*
* @note Only available in 1.8.3 and above.
*
* @param string1 First string (left).
* @param string2 Second string (right).
* @param num Number of characters to compare.
* @param ignorecase If true, comparison is case insensitive.
* If false (default), comparison is case sensitive.
* @return -1 if string1 < string2
* 0 if string1 == string2
* 1 if string1 > string2
*/
native strncmp(const string1[], const string2[], num, bool:ignorecase=false);
/**
* Backwards compatibility stock - use argbreak or argparse.
* @deprecated this function does not work properly.
*/
#pragma deprecated Use argbreak() instead
stock strbreak(const text[], Left[], leftLen, Right[], rightLen)
{
return argbreak(text, Left, leftLen, Right, rightLen);
}
/**
* Parses an argument string to find the first argument. You can use this to
* replace strbreak().
*
* @note Only available in 1.8.3 and above.
*
* @note You can use argparse() to break a string into all of its arguments:
* new arg[N], pos;
* while (true) {
* pos = argparse(string, pos, arg, sizeof(arg) - 1);
* if (pos == -1)
* break;
* }
*
* @note All initial whitespace is removed. Remaining characters are read until an
* argument separator is encountered. A separator is any whitespace not inside
* a double-quotation pair (i.e. "x b" is one argument). If only one quotation
* mark appears, argparse() acts as if one existed at the end of the string.
* Quotation marks are never written back, and do not act as separators. For
* example, "a""b""c" will return "abc". An empty quote pair ("") will count
* as an argument containing no characters.
*
* @note argparse() will write an empty string to argbuffer if no argument is found.
*
* @param text String to tokenize.
* @param pos Position to start parsing from.
* @param argbuffer Buffer to store first argument.
* @param maxlen Size of the buffer.
* @return If no argument was found, -1 is returned. Otherwise,
* the index to the next position to parse from is
* returned. This might be the very end of the string.
*/
native argparse(const text[], pos, argbuffer[], maxlen);
/**
* Emulates strbreak() using argparse().
*
* @param text Source input string.
* @param left Buffer to store string left part.
* @param leftlen Maximum length of the string part buffer.
* @param right Buffer to store string right part.
* @param rightlen Maximum length of the string part buffer.
*
* @return -1 if no match was found; otherwise, an index into source
* marking the first index after the searched text. The
* index is always relative to the start of the input string.
*/
stock argbreak(const text[], left[], leftlen, right[], rightlen)
{
new pos = argparse(text, 0, left, leftlen);
if (pos == -1)
return -1;
new textlen = strlen(text);
while (pos < textlen && isspace(text[pos]))
pos++;
copy(right, rightlen, text[pos]);
return pos;
}
/**
* Returns text in a string up until a certain character sequence is reached.
*
* @note Only available in 1.8.3 and above.
*
* @param source Source input string.
* @param split A string which specifies a search point to break at.
* @param part Buffer to store string part.
* @param partLen Maximum length of the string part buffer.
*
* @return -1 if no match was found; otherwise, an index into source
* marking the first index after the searched text. The
* index is always relative to the start of the input string.
*/
native split_string(const source[], const split[], part[], partLen);
/**
* It is basically strbreak but you have a delimiter that is more than one character in length. By Suicid3.
*
* @param szInput Source input string.
* @param szLeft Buffer to store left string part.
* @param pL_Max Maximum length of the string part buffer.
* @param szRight Buffer to store right string part.
* @param pR_Max Maximum length of the string part buffer.
* @param szDelim A string which specifies a search point to break at.
*
* @noreturn
*/
stock split(const szInput[], szLeft[], pL_Max, szRight[], pR_Max, const szDelim[])
{
new iEnd = contain(szInput, szDelim);
new iStart = iEnd + strlen(szDelim);
//If delimiter isnt in Input just split the string at max lengths
if (iEnd == -1)
{
iStart = copy(szLeft, pL_Max, szInput);
copy(szRight, pR_Max, szInput[iStart]);
return;
}
//If delimter is in Input then split at input for max lengths
if (pL_Max >= iEnd)
copy(szLeft, iEnd, szInput);
else
copy(szLeft, pL_Max, szInput);
copy(szRight, pR_Max, szInput[iStart]);
return;
}
/**
* Removes a path from szFilePath leaving the name of the file in szFile for a pMax length.
*
* @param szFilePath String to perform search and replacements on.
* @param szFile Buffer to store file name.
* @param pMax Maximum length of the string buffer.
*
* @noreturn
*/
stock remove_filepath(const szFilePath[], szFile[], pMax)
{
new len = strlen(szFilePath);
while ((--len >= 0) && (szFilePath[len] != '/') && (szFilePath[len] != '\')) { }
copy(szFile, pMax, szFilePath[len + 1]);
return;
}
/**
* Replaces a contained string iteratively.
*
* @note Consider using replace_string() instead.
*
* @note This ensures that no infinite replacements will take place by
* intelligently moving to the next string position each iteration.
*
* @param string String to perform search and replacements on.
* @param len Maximum length of the string buffer.
* @param what String to search for.
* @param with String to replace the search string with.
* @return Number of replacements on success, otherwise 0.
*/
stock replace_all(string[], len, const what[], const with[])
{
new pos = 0;
if ((pos = contain(string, what)) == -1)
{
return 0;
}
new total = 0;
new with_len = strlen(with);
new diff = strlen(what) - with_len;
new total_len = strlen(string);
new temp_pos = 0;
while (replace(string[pos], len - pos, what, with) != 0)
{
total++;
/* jump to position after replacement */
pos += with_len;
/* update cached length of string */
total_len -= diff;
/* will the next call be operating on the last character? */
if (pos >= total_len)
{
break;
}
/* find the next position from our offset */
temp_pos = contain(string[pos], what);
/* if it's invalid, we're done */
if (temp_pos == -1)
{
break;
}
/* otherwise, reposition and update counters */
pos += temp_pos;
}
return total;
}
/**
* Breaks a string into pieces and stores each piece into an array of buffers.
*
* @param text The string to split.
* @param split The string to use as a split delimiter.
* @param buffers An array of string buffers (2D array).
* @param maxStrings Number of string buffers (first dimension size).
* @param maxStringLength Maximum length of each string buffer.
* @param copyRemainder False (default) discard excess pieces, true to ignore
* delimiters after last piece.
* @return Number of strings retrieved.
*/
stock explode_string(const text[], const split[], buffers[][], maxStrings, maxStringLength, bool:copyRemainder = false)
{
new reloc_idx, idx, total;
if (maxStrings < 1 || !split[0])
{
return 0;
}
while ((idx = split_string(text[reloc_idx], split, buffers[total], maxStringLength)) != -1)
{
reloc_idx += idx;
if (++total == maxStrings)
{
if (copyRemainder)
{
copy(buffers[total-1], maxStringLength, text[reloc_idx-idx]);
}
return total;
}
}
copy(buffers[total++], maxStringLength, text[reloc_idx]);
return total;
}
/**
* Joins an array of strings into one string, with a "join" string inserted in
* between each given string. This function complements ExplodeString.
*
* @param strings An array of strings.
* @param numStrings Number of strings in the array.
* @param join The join string to insert between each string.
* @param buffer Output buffer to write the joined string to.
* @param maxLength Maximum length of the output buffer.
* @return Number of bytes written to the output buffer.
*/
stock implode_strings(const strings[][], numStrings, const join[], buffer[], maxLength)
{
new total, length, part_length;
new join_length = strlen(join);
for (new i=0; i<numStrings; i++)
{
length = copy(buffer[total], maxLength-total, strings[i]);
total += length;
if (length < part_length)
{
break;
}
if (i != numStrings - 1)
{
length = copy(buffer[total], maxLength-total, join);
total += length;
if (length < join_length)
{
break;
}
}
}
return total;
}