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utils.cpp
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/*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the sscanf 2.0 SA:MP plugin.
*
* The Initial Developer of the Original Code is Alex "Y_Less" Cole.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Special Thanks to:
*
* SA:MP Team past, present and future
*/
#include "utils.h"
#include "sscanf.h"
#include <ctype.h>
//int
// g_iServerVersion = 0;
unsigned int
g_iTrueMax = 0,
g_iInvalid = 0,
g_iMaxPlayerName = 0;
int *
g_iConnected = 0;
int *
g_iNPC = 0;
char *
g_szPlayerNames = 0;
//char **
// g_pServer = NULL;
static char
* g_cDelim = " ",
* g_cTemp = 0;
extern logprintf_t
logprintf;
// Server information
int
strincmp(const char * st1, const char * st2, unsigned int n)
{
int
ret;
while (n--)
{
if (*st1 == '\0' || *st2 == '\0')
{
return 0;
}
ret = tolower(*st1++) - tolower(*st2++);
if (ret)
{
return ret;
}
}
return 0;
}
bool
strstrin(const char * st1, const char * st2, unsigned int n)
{
char
f = tolower(*st2);
while (*st1)
{
if (tolower(*st1) == f)
{
if (!strincmp(st1, st2, n))
{
return true;
}
}
++st1;
}
return false;
}
int *
GetConnected()
{
//return (int *)(*g_pServer + 500 * 120 + 8); // g_iTrueMax
return g_iConnected;
}
int *
GetNPCs()
{
//return (int *)(*g_pServer + 500 * 157 + 8); // g_iTrueMax
return g_iNPC;
}
char *
GetNames()
{
//return *g_pServer + 500 * 128 + 8; // g_iTrueMax
return g_szPlayerNames;
}
bool
IsPlayerConnected(int playerid)
{
// Check the IsPlayerConnected variable in memory.
return GetConnected()[playerid] != 0;
}
bool
IsPlayerNPC(int playerid)
{
// Check the IsPlayerNPC variable in memory.
return GetNPCs()[playerid] != 0;
}
char *
GetPlayerName(int playerid)
{
// Get the player name pointer from memory.
return GetNames() + (playerid * g_iMaxPlayerName);
}
// Spacer information
// These are the delimiter functions. The code is arranged in this way to
// allow for planned extensions to allow multiple custom delimiters without
// modifying any other code.
bool
IsDelimiter(char ch)
{
// Can easily modify this function when we want to add the ability to have
// multiple delimiters. This should be the only place that this check is
// done now - use functions, not code!
//return ch == g_cDelim;
char *
nu = g_cDelim;
while (*nu)
{
if (*nu++ == ch) return true;
}
return false;
}
bool
IsDefaultDelimiter()
{
return g_cDelim[0] == ' ' && g_cDelim[1] == '\0';
}
void
TempDelimiter(char * ch)
{
g_cTemp = g_cDelim;
g_cDelim = ch;
}
void
RestoreDelimiter()
{
g_cDelim = g_cTemp;
g_cTemp = 0;
}
bool
InitialiseDelimiter()
{
return AddDelimiter(' ');
}
bool
ResetDelimiter()
{
return InitialiseDelimiter();
}
bool
AddDelimiter(char ch)
{
static char
sStr[2] = {0, 0};
// Only add new delimiters if we are not in a temporary delimiter area.
// The only place this applies is when you do something like:
// E<ip<;>ii>(1, 2, 3)
sStr[0] = ch;
sStr[1] = '\0';
if (g_cTemp)
{
g_cTemp = sStr;
}
else
{
g_cDelim = sStr;
}
return true;
}
bool
AddDelimiters(char * ch)
{
// Only add new delimiters if we are not in a temporary delimiter area.
// The only place this applies is when you do something like:
// E<ip<;>ii>(1, 2, 3)
if (g_cTemp)
{
g_cTemp = ch;
}
else
{
g_cDelim = ch;
}
return true;
}
// Generic spacer code - delimiters and whitespace.
bool
IsWhitespace(char ch)
{
return (unsigned char)ch <= (unsigned char)' ';
}
bool
IsSpacer(char ch)
{
return IsWhitespace(ch) || IsDelimiter(ch);
}
bool
IsStringEnd(char ch)
{
if (IsDefaultDelimiter())
{
return IsWhitespace(ch);
}
else
{
return IsEnd(ch) || IsDelimiter(ch);
}
}
bool
IsEnd(char ch)
{
return ch == '\0';
}
void
SkipSpacer(char ** input)
{
char *
str = *input;
while (*str && IsSpacer(*str))
{
++str;
}
*input = str;
}
void
FindSpacer(char ** input)
{
char *
str = *input;
// Don't need a valid character check here as NULL is a spacer.
while (!IsSpacer(*str))
{
++str;
}
*input = str;
}
void
SkipDelimiter(char ** input)
{
char *
str = *input;
while (*str && IsDelimiter(*str))
{
++str;
}
*input = str;
}
void
FindDelimiter(char ** input)
{
char *
str = *input;
while (!IsDelimiter(*str))
{
++str;
}
*input = str;
}
void
SkipWhitespace(char ** input)
{
char *
str = *input;
while (*str && IsWhitespace(*str))
{
++str;
}
*input = str;
}
void
SkipOneSpacer(char ** input)
{
char *
str = *input;
// Skip all whitespace before the explicit delimiter.
while (*str && IsWhitespace(*str))
{
++str;
}
// We have found a delimiter - skip just one of them.
if (IsDelimiter(*str))
{
++str;
// Now skip any space after it too.
while (*str && IsWhitespace(*str))
{
++str;
}
}
*input = str;
}
void
FindWhitespace(char ** input)
{
char *
str = *input;
while (!IsWhitespace(*str))
{
++str;
}
*input = str;
}
bool
GetReturn(char ** input)
{
// Check the end is a valid end.
if (IsSpacer(**input))
{
return true;
}
return false;
}
bool
GetReturnDefault(char ** input)
{
// Check the end is a valid end.
SkipWhitespace(input);
if (IsDelimiter(**input))
{
++(*input);
}
else
{
logprintf("sscanf warning: Unclosed default value.");
}
return true;
}
bool
strichecks(char * st1, const char * st2)
{
// Highly specialised strcmp function. We don't need the lexical
// difference, only to know if they're the same, so we only compare then
// like that and return true/false. Because the string we're comparing to
// is constant we can use that for the length, we also know it's always
// upper case. Note that this is not a generic function, it only works on
// capital letters and underlines.
while (*st2 && (*st2 == (*st1 & ~0x20)))
{
++st1;
++st2;
}
// Check if *st2 is null.
return IsEnd(*st2);
}