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authornavewindre <nw@moneybot.cc>2023-11-13 14:28:08 +0100
committernavewindre <nw@moneybot.cc>2023-11-13 14:28:08 +0100
commitda518fdc0f32839730ccdee8098b59c6f842d93f (patch)
treed6f856a6148c0b4d5819f88f068b7287b8044513 /sourcemod/scripting/include/string.inc
parentbc678b10830cdaef64bcc592ca2524ebe0fcdc45 (diff)
ya
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+/**
+ * vim: set ts=4 :
+ * =============================================================================
+ * SourceMod (C)2004-2008 AlliedModders LLC. All rights reserved.
+ * =============================================================================
+ *
+ * This file is part of the SourceMod/SourcePawn SDK.
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, version 3.0, as published by the
+ * Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * As a special exception, AlliedModders LLC gives you permission to link the
+ * code of this program (as well as its derivative works) to "Half-Life 2," the
+ * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
+ * by the Valve Corporation. You must obey the GNU General Public License in
+ * all respects for all other code used. Additionally, AlliedModders LLC grants
+ * this exception to all derivative works. AlliedModders LLC defines further
+ * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
+ * or <http://www.sourcemod.net/license.php>.
+ *
+ * Version: $Id$
+ */
+
+#if defined _string_included
+ #endinput
+#endif
+#define _string_included
+
+/**
+ * @global Unless otherwise noted, all string functions which take in a
+ * writable buffer and maximum length should have the null terminator INCLUDED
+ * in the length. This means that this is valid:
+ * strcopy(string, sizeof(string), ...)
+ */
+
+/**
+ * Calculates the length of a string.
+ *
+ * @param str String to check.
+ * @return Number of valid character bytes in the string.
+ */
+native int strlen(const char[] str);
+
+/**
+ * Tests whether a string is found inside another string.
+ *
+ * @param str String to search in.
+ * @param substr Substring to find inside the original string.
+ * @param caseSensitive If true (default), search is case sensitive.
+ * If false, search is case insensitive.
+ * @return -1 on failure (no match found). Any other value
+ * indicates a position in the string where the match starts.
+ */
+native int StrContains(const char[] str, const char[] substr, bool caseSensitive=true);
+
+/**
+ * Compares two strings lexographically.
+ *
+ * @param str1 First string (left).
+ * @param str2 Second string (right).
+ * @param caseSensitive If true (default), comparison is case sensitive.
+ * If false, comparison is case insensitive.
+ * @return -1 if str1 < str2
+ * 0 if str1 == str2
+ * 1 if str1 > str2
+ */
+native int strcmp(const char[] str1, const char[] str2, bool caseSensitive=true);
+
+/**
+ * Compares two strings parts lexographically.
+ *
+ * @param str1 First string (left).
+ * @param str2 Second string (right).
+ * @param num Number of characters to compare.
+ * @param caseSensitive If true (default), comparison is case sensitive.
+ * If false, comparison is case insensitive.
+ * @return -1 if str1 < str2
+ * 0 if str1 == str2
+ * 1 if str1 > str2
+ */
+native int strncmp(const char[] str1, const char[] str2, int num, bool caseSensitive=true);
+
+/**
+ * Backwards compatible stock - StrCompare is now strcmp
+ * @deprecated Renamed to strcmp
+ */
+#pragma deprecated Use strcmp() instead
+stock int StrCompare(const char[] str1, const char[] str2, bool caseSensitive=true)
+{
+ return strcmp(str1, str2, caseSensitive);
+}
+
+/**
+ * Returns whether two strings are equal.
+ *
+ * @param str1 First string (left).
+ * @param str2 Second string (right).
+ * @param caseSensitive If true (default), comparison is case sensitive.
+ * If false, comparison is case insensitive.
+ * @return True if equal, false otherwise.
+ */
+stock bool StrEqual(const char[] str1, const char[] str2, bool caseSensitive=true)
+{
+ return (strcmp(str1, str2, caseSensitive) == 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 destLen Destination buffer length (includes null terminator).
+ * @param source Source string buffer to copy from.
+ * @return Number of characters written to the buffer,
+ * not including the null terminator.
+ */
+native int strcopy(char[] dest, int destLen, const char[] source);
+
+/**
+ * Backwards compatibility stock - use strcopy
+ * @deprecated Renamed to strcopy
+ */
+#pragma deprecated Use strcopy() instead
+stock int StrCopy(char[] dest, int destLen, const char[] source)
+{
+ return strcopy(dest, destLen, source);
+}
+
+/**
+ * Formats a string according to the SourceMod format rules (see documentation).
+ *
+ * @param buffer Destination string buffer.
+ * @param maxlength Maximum length of output string buffer.
+ * @param format Formatting rules.
+ * @param ... Variable number of format parameters.
+ * @return Number of characters written to the buffer,
+ * not including the null terminator.
+ */
+native int Format(char[] buffer, int maxlength, const char[] format, any ...);
+
+/**
+ * Formats a string according to the SourceMod format rules (see documentation).
+ * @note This is the same as Format(), except none of the input buffers can
+ * overlap the same memory as the output buffer. Since this security
+ * check is removed, it is slightly faster.
+ *
+ * @param buffer Destination string buffer.
+ * @param maxlength Maximum length of output string buffer.
+ * @param format Formatting rules.
+ * @param ... Variable number of format parameters.
+ * @return Number of characters written to the buffer,
+ * not including the null terminator.
+ */
+native int FormatEx(char[] buffer, int maxlength, const char[] format, any ...);
+
+/**
+ * Formats a string according to the SourceMod 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.
+ *
+ * @param buffer Destination string buffer.
+ * @param maxlength Maximum length of output string buffer.
+ * @param format Formatting rules.
+ * @param varpos Argument number which contains the '...' symbol.
+ * Note: Arguments start at 1.
+ * @return Number of bytes written.
+ * @error Invalid argument index.
+ */
+native int VFormat(char[] buffer, int maxlength, const char[] format, int varpos);
+
+/**
+ * Converts a string to an integer.
+ *
+ * @param str String to convert.
+ * @param nBase Numerical base to use. 10 is default.
+ * @return Integer conversion of string, or 0 on failure.
+ */
+native int StringToInt(const char[] str, int nBase=10);
+
+/**
+ * Converts a string to an integer with some more options.
+ *
+ * @param str String to convert.
+ * @param result Variable to store the result in.
+ * @param nBase Numerical base to use. 10 is default.
+ * @return Number of characters consumed.
+ */
+native int StringToIntEx(const char[] str, int &result, int nBase=10);
+
+/**
+ * Converts a string to a 64-bit integer.
+ *
+ * @param str String to convert.
+ * @param result Array to store the upper and lower
+ * 32-bits of the 64-bit integer.
+ * @param nBase Numerical base to use. 10 is default.
+ * @return Number of characters consumed.
+ */
+native int StringToInt64(const char[] str, int result[2], int nBase=10);
+
+/**
+ * Converts an integer to a string.
+ *
+ * @param num Integer to convert.
+ * @param str Buffer to store string in.
+ * @param maxlength Maximum length of string buffer.
+ * @return Number of characters written to the buffer,
+ * not including the null terminator.
+ */
+native int IntToString(int num, char[] str, int maxlength);
+
+/**
+ * Converts a 64-bit integer to a string.
+ *
+ * @param num Array containing the upper and lower
+ * 32-bits of a 64-bit integer.
+ * @param str Buffer to store string in.
+ * @param maxlength Maximum length of string buffer.
+ * @return Number of characters written to the buffer,
+ * not including the null terminator.
+ */
+native int Int64ToString(const int num[2], char[] str, int maxlength);
+
+/**
+ * Converts a string to a floating point number.
+ *
+ * @param str String to convert to a float.
+ * @return Floating point result, or 0.0 on error.
+ */
+native float StringToFloat(const char[] str);
+
+/**
+ * Converts a string to a floating point number with some more options.
+ *
+ * @param str String to convert to a float.
+ * @param result Variable to store result in.
+ * @return Number of characters consumed.
+ */
+native int StringToFloatEx(const char[] str, float &result);
+
+/**
+ * Converts a floating point number to a string.
+ *
+ * @param num Floating point number to convert.
+ * @param str Buffer to store string in.
+ * @param maxlength Maximum length of string buffer.
+ * @return Number of characters written to the buffer,
+ * not including the null terminator.
+ */
+native int FloatToString(float num, char[] str, int maxlength);
+
+/**
+ * Finds the first "argument" in a string; either a set of space
+ * terminated characters, or a fully quoted string. After the
+ * argument is found, whitespace is read until the next portion
+ * of the string is reached. If nothing remains, -1 is returned.
+ * Otherwise, the index to the first character is returned.
+ *
+ * @param source Source input string.
+ * @param arg Stores argument read from string.
+ * @param argLen Maximum length of argument buffer.
+ * @return Index to next piece of string, or -1 if none.
+ */
+native int BreakString(const char[] source, char[] arg, int argLen);
+
+/**
+ * Backwards compatibility stock - use BreakString
+ * @deprecated Renamed to BreakString.
+ */
+#pragma deprecated Use BreakString() instead
+stock int StrBreak(const char[] source, char[] arg, int argLen)
+{
+ return BreakString(source, arg, argLen);
+}
+
+/**
+ * Removes whitespace characters from the beginning and end of a string.
+ *
+ * @param str The string to trim.
+ * @return Number of bytes written (UTF-8 safe).
+ */
+native int TrimString(char[] str);
+
+/**
+ * Returns text in a string up until a certain character sequence is reached.
+ *
+ * @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 int SplitString(const char[] source, const char[] split, char[] part, int partLen);
+
+/**
+ * Given a string, replaces all occurrences of a search string with a
+ * replacement string.
+ *
+ * @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.
+ * @error 'search' parameter is empty.
+ */
+native int ReplaceString(char[] text, int maxlength, const char[] search, const char[] replace, bool caseSensitive=true);
+
+/**
+ * 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 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.
+ * @error 'search' parameter is empty.
+ */
+native int ReplaceStringEx(char[] text, int maxlength, const char[] search, const char[] replace, int searchLen=-1, int replaceLen=-1, bool caseSensitive=true);
+
+/**
+ * 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.
+ *
+ * @param source Source input string.
+ * @return Number of bytes the current character uses.
+ */
+native int GetCharBytes(const char[] source);
+
+/**
+ * Returns whether a character is an ASCII alphabet character.
+ *
+ * @note Multi-byte characters will always return false.
+ *
+ * @param chr Character to test.
+ * @return True if character is alphabetical, otherwise false.
+ */
+native bool IsCharAlpha(int chr);
+
+/**
+ * Returns whether a character is numeric.
+ *
+ * @note Multi-byte characters will always return false.
+ *
+ * @param chr Character to test.
+ * @return True if character is numeric, otherwise false.
+ */
+native bool IsCharNumeric(int chr);
+
+/**
+ * Returns whether a character is whitespace.
+ *
+ * @note Multi-byte characters will always return false.
+ *
+ * @param chr Character to test.
+ * @return True if character is whitespace, otherwise false.
+ */
+native bool IsCharSpace(int chr);
+
+/**
+ * Returns if a character is multi-byte or not.
+ *
+ * @param chr Character to test.
+ * @return 0 for a normal 7-bit ASCII character,
+ * otherwise number of bytes in multi-byte character.
+ */
+native int IsCharMB(int chr);
+
+/**
+ * Returns whether an alphabetic character is uppercase.
+ *
+ * @note Multi-byte characters will always return false.
+ *
+ * @param chr Character to test.
+ * @return True if character is uppercase, otherwise false.
+ */
+native bool IsCharUpper(int chr);
+
+/**
+ * Returns whether an alphabetic character is lowercase.
+ *
+ * @note Multi-byte characters will always return false.
+ *
+ * @param chr Character to test.
+ * @return True if character is lowercase, otherwise false.
+ */
+native bool IsCharLower(int chr);
+
+/**
+ * Strips a quote pair off a string if it exists. That is, the following
+ * replace rule is applied once: ^"(.*)"$ -> ^\1$
+ *
+ * Note that the leading and trailing quotes will only be removed if both
+ * exist. Otherwise, the string is left unmodified. This function should
+ * be considered O(k) (all characters get shifted down).
+ *
+ * @param text String to modify (in place).
+ * @return True if string was modified, false if there was no
+ * set of quotes.
+ */
+native bool StripQuotes(char[] text);
+
+/**
+ * Converts a lowercase character to its uppercase counterpart.
+ *
+ * @param chr Character to convert.
+ * @return Uppercase character on success,
+ * no change on failure.
+ */
+stock int CharToUpper(int chr)
+{
+ if (IsCharLower(chr))
+ {
+ return (chr & ~(1<<5));
+ }
+
+ return chr;
+}
+
+/**
+ * Converts an uppercase character to its lowercase counterpart.
+ *
+ * @param chr Character to convert.
+ * @return Lowercase character on success,
+ * no change on failure.
+ */
+stock int CharToLower(int chr)
+{
+ if (IsCharUpper(chr))
+ {
+ return (chr | (1<<5));
+ }
+
+ return chr;
+}
+
+/**
+ * Finds the first occurrence of a character in a string.
+ *
+ * @param str String.
+ * @param c Character to search for.
+ * @param reverse False (default) to search forward, true to search
+ * backward.
+ * @return The index of the first occurrence of the character
+ * in the string, or -1 if the character was not found.
+ */
+stock int FindCharInString(const char[] str, char c, bool reverse = false)
+{
+ int len = strlen(str);
+
+ if (!reverse)
+ {
+ for (int i = 0; i < len; i++)
+ {
+ if (str[i] == c)
+ {
+ return i;
+ }
+ }
+ }
+ else
+ {
+ for (int i = len - 1; i >= 0; i--)
+ {
+ if (str[i] == c)
+ {
+ return i;
+ }
+ }
+ }
+
+ return -1;
+}
+
+/**
+ * Concatenates one string onto another.
+ *
+ * @param buffer String to append to.
+ * @param maxlength Maximum length of entire buffer.
+ * @param source Source string to concatenate.
+ * @return Number of bytes written.
+ */
+stock int StrCat(char[] buffer, int maxlength, const char[] source)
+{
+ int len = strlen(buffer);
+ if (len >= maxlength)
+ {
+ return 0;
+ }
+
+ return Format(buffer[len], maxlength-len, "%s", source);
+}
+
+/**
+ * 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 int ExplodeString(const char[] text, const char[] split, char[][] buffers, int maxStrings,
+ int maxStringLength, bool copyRemainder = false)
+{
+ int reloc_idx, idx, total;
+
+ if (maxStrings < 1 || !split[0])
+ {
+ return 0;
+ }
+
+ while ((idx = SplitString(text[reloc_idx], split, buffers[total], maxStringLength)) != -1)
+ {
+ reloc_idx += idx;
+ if (++total == maxStrings)
+ {
+ if (copyRemainder)
+ {
+ strcopy(buffers[total-1], maxStringLength, text[reloc_idx-idx]);
+ }
+ return total;
+ }
+ }
+
+ strcopy(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 int ImplodeStrings(const char[][] strings, int numStrings, const char[] join, char[] buffer, int maxLength)
+{
+ int total, length, part_length;
+ int join_length = strlen(join);
+ for (int i=0; i<numStrings; i++)
+ {
+ length = strcopy(buffer[total], maxLength-total, strings[i]);
+ total += length;
+ if (length < part_length)
+ {
+ break;
+ }
+ if (i != numStrings - 1)
+ {
+ length = strcopy(buffer[total], maxLength-total, join);
+ total += length;
+ if (length < join_length)
+ {
+ break;
+ }
+ }
+ }
+ return total;
+}