683 lines
15 KiB
C++
683 lines
15 KiB
C++
/**
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* vim: set ts=4 sw=4 tw=99 noet :
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* =============================================================================
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* SourceMod
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* Copyright (C) 2004-2008 AlliedModders LLC. All rights reserved.
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* =============================================================================
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, version 3.0, as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* As a special exception, AlliedModders LLC gives you permission to link the
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* code of this program (as well as its derivative works) to "Half-Life 2," the
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* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
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* by the Valve Corporation. You must obey the GNU General Public License in
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* all respects for all other code used. Additionally, AlliedModders LLC grants
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* this exception to all derivative works. AlliedModders LLC defines further
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* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
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* or <http://www.sourcemod.net/license.php>.
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*
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* Version: $Id$
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*/
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#include "common_logic.h"
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#include <string.h>
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#include <stdlib.h>
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#include <ITextParsers.h>
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#include <ctype.h>
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#include "stringutil.h"
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inline const char *_strstr(const char *str, const char *substr)
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{
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#ifdef PLATFORM_WINDOWS
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return strstr(str, substr);
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#elif defined PLATFORM_LINUX || defined PLATFORM_APPLE
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return (const char *)strstr(str, substr);
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#endif
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}
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/*********************************************
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* *
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* STRING MANIPULATION NATIVE IMPLEMENTATIONS *
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* *
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*********************************************/
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static cell_t sm_strlen(IPluginContext *pCtx, const cell_t *params)
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{
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char *str;
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pCtx->LocalToString(params[1], &str);
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return strlen(str);
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}
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static cell_t sm_contain(IPluginContext *pCtx, const cell_t *params)
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{
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typedef const char *(*STRSEARCH)(const char *, const char *);
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STRSEARCH func;
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char *str, *substr;
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pCtx->LocalToString(params[1], &str);
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pCtx->LocalToString(params[2], &substr);
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func = (params[3]) ? _strstr : stristr;
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const char *pos = func(str, substr);
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if (pos)
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{
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return (pos - str);
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}
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return -1;
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}
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static cell_t sm_strcmp(IPluginContext *pCtx, const cell_t *params)
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{
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typedef int (*STRCOMPARE)(const char *, const char *);
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STRCOMPARE func;
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char *str1, *str2;
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pCtx->LocalToString(params[1], &str1);
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pCtx->LocalToString(params[2], &str2);
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func = (params[3]) ? strcmp : stricmp;
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return (func(str1, str2));
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}
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static cell_t sm_strncmp(IPluginContext *pCtx, const cell_t *params)
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{
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char *str1, *str2;
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pCtx->LocalToString(params[1], &str1);
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pCtx->LocalToString(params[2], &str2);
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if (params[4])
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{
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return strncmp(str1, str2, (size_t)params[3]);
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} else {
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return strncasecmp(str1, str2, (size_t)params[3]);
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}
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}
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static cell_t sm_strcopy(IPluginContext *pCtx, const cell_t *params)
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{
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char *dest, *src;
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pCtx->LocalToString(params[1], &dest);
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pCtx->LocalToString(params[3], &src);
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return strncopy(dest, src, params[2]);
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}
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static cell_t sm_strconvint(IPluginContext *pCtx, const cell_t *params)
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{
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char *str, *dummy;
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pCtx->LocalToString(params[1], &str);
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return static_cast<cell_t>(strtol(str, &dummy, params[2]));
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}
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static cell_t StringToIntEx(IPluginContext *pCtx, const cell_t *params)
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{
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char *str, *dummy = NULL;
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cell_t *addr;
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pCtx->LocalToString(params[1], &str);
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pCtx->LocalToPhysAddr(params[2], &addr);
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*addr = static_cast<cell_t>(strtol(str, &dummy, params[3]));
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return dummy - str;
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}
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static cell_t sm_numtostr(IPluginContext *pCtx, const cell_t *params)
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{
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char *str;
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pCtx->LocalToString(params[2], &str);
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size_t res = smcore.Format(str, params[3], "%d", params[1]);
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return static_cast<cell_t>(res);
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}
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static cell_t sm_strtofloat(IPluginContext *pCtx, const cell_t *params)
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{
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char *str, *dummy;
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pCtx->LocalToString(params[1], &str);
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float val = (float)strtod(str, &dummy);
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return sp_ftoc(val);
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}
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static cell_t StringToFloatEx(IPluginContext *pCtx, const cell_t *params)
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{
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char *str, *dummy = NULL;
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cell_t *addr;
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pCtx->LocalToString(params[1], &str);
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pCtx->LocalToPhysAddr(params[2], &addr);
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float val = (float)strtod(str, &dummy);
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*addr = sp_ftoc(val);
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return dummy - str;
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}
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static cell_t sm_floattostr(IPluginContext *pCtx, const cell_t *params)
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{
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char *str;
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pCtx->LocalToString(params[2], &str);
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size_t res = smcore.Format(str, params[3], "%f", sp_ctof(params[1]));
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return static_cast<cell_t>(res);
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}
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static cell_t sm_formatex(IPluginContext *pCtx, const cell_t *params)
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{
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char *buf, *fmt;
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size_t res;
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int arg = 4;
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pCtx->LocalToString(params[1], &buf);
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pCtx->LocalToString(params[3], &fmt);
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res = smcore.atcprintf(buf, static_cast<size_t>(params[2]), fmt, pCtx, params, &arg);
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return static_cast<cell_t>(res);
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}
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class StaticCharBuf
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{
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char *buffer;
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size_t max_size;
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public:
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StaticCharBuf() : buffer(NULL), max_size(0)
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{
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}
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~StaticCharBuf()
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{
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free(buffer);
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}
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char* GetWithSize(size_t len)
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{
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if (len > max_size)
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{
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buffer = (char *)realloc(buffer, len);
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max_size = len;
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}
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return buffer;
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}
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};
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static char g_formatbuf[2048];
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static StaticCharBuf g_extrabuf;
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static cell_t sm_format(IPluginContext *pCtx, const cell_t *params)
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{
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char *buf, *fmt, *destbuf;
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cell_t start_addr, end_addr, maxparam;
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size_t res, maxlen;
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int arg = 4;
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bool copy = false;
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char *__copy_buf;
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pCtx->LocalToString(params[1], &destbuf);
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pCtx->LocalToString(params[3], &fmt);
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maxlen = static_cast<size_t>(params[2]);
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start_addr = params[1];
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end_addr = params[1] + maxlen;
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maxparam = params[0];
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for (cell_t i=3; i<=maxparam; i++)
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{
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if ((params[i] >= start_addr) && (params[i] <= end_addr))
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{
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copy = true;
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break;
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}
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}
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if (copy)
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{
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if (maxlen > sizeof(g_formatbuf))
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{
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__copy_buf = g_extrabuf.GetWithSize(maxlen);
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}
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else
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{
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__copy_buf = g_formatbuf;
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}
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}
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buf = (copy) ? __copy_buf : destbuf;
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res = smcore.atcprintf(buf, maxlen, fmt, pCtx, params, &arg);
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if (copy)
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{
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memcpy(destbuf, __copy_buf, res+1);
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}
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return static_cast<cell_t>(res);
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}
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static cell_t sm_vformat(IPluginContext *pContext, const cell_t *params)
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{
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int vargPos = static_cast<int>(params[4]);
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/* Get the parent parameter array */
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cell_t *local_params = pContext->GetLocalParams();
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cell_t max = local_params[0];
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if (vargPos > (int)max + 1)
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{
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return pContext->ThrowNativeError("Argument index is invalid: %d", vargPos);
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}
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cell_t addr_start = params[1];
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cell_t addr_end = addr_start + params[2];
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bool copy = false;
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for (int i=vargPos; i<=max; i++)
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{
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/* Does this clip bounds? */
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if ((local_params[i] >= addr_start)
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&& (local_params[i] <= addr_end))
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{
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copy = true;
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break;
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}
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}
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/* Get destination info */
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char *format, *destination;
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size_t maxlen = static_cast<size_t>(params[2]);
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if (copy)
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{
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destination = g_formatbuf;
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} else {
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pContext->LocalToString(params[1], &destination);
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}
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pContext->LocalToString(params[3], &format);
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size_t total = smcore.atcprintf(destination, maxlen, format, pContext, local_params, &vargPos);
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/* Perform copy-on-write if we need to */
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if (copy)
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{
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pContext->StringToLocal(params[1], maxlen, g_formatbuf);
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}
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return total;
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}
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/* :TODO: make this UTF8 safe */
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static cell_t BreakString(IPluginContext *pContext, const cell_t *params)
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{
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const char *input;
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char *out;
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size_t outMax;
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/* Get parameters */
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pContext->LocalToString(params[1], (char **)&input);
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pContext->LocalToString(params[2], &out);
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outMax = params[3];
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const char *inptr = input;
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/* Eat up whitespace */
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while (*inptr != '\0' && textparsers->IsWhitespace(inptr))
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{
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inptr++;
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}
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if (*inptr == '\0')
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{
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if (outMax)
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{
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*out = '\0';
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}
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return -1;
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}
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const char *start, *end = NULL;
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bool quoted = (*inptr == '"');
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if (quoted)
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{
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inptr++;
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start = inptr;
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/* Read input until we reach a quote. */
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while (*inptr != '\0' && *inptr != '"')
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{
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/* Update the end point, increment the stream. */
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end = inptr++;
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}
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/* Read one more token if we reached an end quote */
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if (*inptr == '"')
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{
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inptr++;
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}
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} else {
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start = inptr;
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/* Read input until we reach a space */
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while (*inptr != '\0' && !textparsers->IsWhitespace(inptr))
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{
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/* Update the end point, increment the stream. */
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end = inptr++;
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}
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}
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/* Copy the string we found, if necessary */
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if (end == NULL)
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{
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if (outMax)
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{
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*out = '\0';
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}
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} else if (outMax) {
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char *outptr = out;
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outMax--;
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for (const char *ptr=start;
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(ptr <= end) && ((unsigned)(outptr - out) < (outMax));
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ptr++, outptr++)
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{
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*outptr = *ptr;
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}
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*outptr = '\0';
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}
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/* Consume more of the string until we reach non-whitespace */
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while (*inptr != '\0' && textparsers->IsWhitespace(inptr))
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{
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inptr++;
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}
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if (*inptr == '\0')
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{
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return -1;
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}
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return inptr - input;
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}
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static cell_t GetCharBytes(IPluginContext *pContext, const cell_t *params)
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{
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char *str;
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pContext->LocalToString(params[1], &str);
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return _GetUTF8CharBytes(str);
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};
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static cell_t IsCharAlpha(IPluginContext *pContext, const cell_t *params)
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{
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char chr = params[1];
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if (_GetUTF8CharBytes(&chr) != 1)
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{
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return 0;
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}
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return isalpha(chr);
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}
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static cell_t IsCharNumeric(IPluginContext *pContext, const cell_t *params)
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{
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char chr = params[1];
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if (_GetUTF8CharBytes(&chr) != 1)
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{
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return 0;
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}
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return isdigit(chr);
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}
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static cell_t IsCharSpace(IPluginContext *pContext, const cell_t *params)
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{
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char chr = params[1];
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if (_GetUTF8CharBytes(&chr) != 1)
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{
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return 0;
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}
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return isspace(chr);
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}
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static cell_t IsCharMB(IPluginContext *pContext, const cell_t *params)
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{
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char chr = params[1];
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unsigned int bytes = _GetUTF8CharBytes(&chr);
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if (bytes == 1)
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{
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return 0;
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}
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return bytes;
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}
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static cell_t IsCharUpper(IPluginContext *pContext, const cell_t *params)
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{
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char chr = params[1];
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if (_GetUTF8CharBytes(&chr) != 1)
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{
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return 0;
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}
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return isupper(chr);
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}
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static cell_t IsCharLower(IPluginContext *pContext, const cell_t *params)
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{
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char chr = params[1];
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if (_GetUTF8CharBytes(&chr) != 1)
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{
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return 0;
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}
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return islower(chr);
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}
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static cell_t ReplaceString(IPluginContext *pContext, const cell_t *params)
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{
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char *text, *search, *replace;
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size_t maxlength;
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bool caseSensitive;
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pContext->LocalToString(params[1], &text);
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pContext->LocalToString(params[3], &search);
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pContext->LocalToString(params[4], &replace);
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maxlength = (size_t)params[2];
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/* Account for old binary plugins that won't pass the last parameter */
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if (params[0] == 5)
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{
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caseSensitive = (bool)params[5];
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}
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else
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{
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caseSensitive = true;
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}
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if (search[0] == '\0')
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{
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return pContext->ThrowNativeError("Cannot replace searches of empty strings");
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}
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return UTIL_ReplaceAll(text, maxlength, search, replace, caseSensitive);
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}
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static cell_t ReplaceStringEx(IPluginContext *pContext, const cell_t *params)
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{
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char *text, *search, *replace;
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size_t maxlength;
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bool caseSensitive;
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pContext->LocalToString(params[1], &text);
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pContext->LocalToString(params[3], &search);
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pContext->LocalToString(params[4], &replace);
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maxlength = (size_t)params[2];
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size_t searchLen = (params[5] == -1) ? strlen(search) : (size_t)params[5];
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size_t replaceLen = (params[6] == -1) ? strlen(replace) : (size_t)params[6];
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/* Account for old binary plugins that won't pass the last parameter */
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if (params[0] == 7)
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{
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caseSensitive = (bool)params[7];
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}
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else
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{
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caseSensitive = true;
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}
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if (searchLen == 0)
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{
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return pContext->ThrowNativeError("Cannot replace searches of empty strings");
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}
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char *ptr = UTIL_ReplaceEx(text, maxlength, search, searchLen, replace, replaceLen, caseSensitive);
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if (ptr == NULL)
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{
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return -1;
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}
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return ptr - text;
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}
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static cell_t TrimString(IPluginContext *pContext, const cell_t *params)
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{
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char *str;
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pContext->LocalToString(params[1], &str);
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size_t chars = strlen(str);
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if (chars == 0)
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{
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return 0;
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}
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char *end = str + chars - 1;
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/* Iterate backwards through string until we reach first non-whitespace char */
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while (end >= str && textparsers->IsWhitespace(end))
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{
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end--;
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|
}
|
|
|
|
/* Replace first whitespace char (at the end) with null terminator */
|
|
*(end + 1) = '\0';
|
|
|
|
/* Iterate forwards through string until first non-whitespace char is reached */
|
|
while (textparsers->IsWhitespace(str))
|
|
{
|
|
str++;
|
|
}
|
|
|
|
size_t bytes;
|
|
pContext->StringToLocalUTF8(params[1], chars + 1, str, &bytes);
|
|
|
|
return bytes;
|
|
}
|
|
|
|
static cell_t SplitString(IPluginContext *pContext, const cell_t *params)
|
|
{
|
|
char *text, *split;
|
|
|
|
pContext->LocalToString(params[1], &text);
|
|
pContext->LocalToString(params[2], &split);
|
|
|
|
size_t maxLen = (size_t)params[4];
|
|
size_t textLen = strlen(text);
|
|
size_t splitLen = strlen(split);
|
|
|
|
if (splitLen > textLen)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Note that it's <= ... you could also just add 1,
|
|
* but this is a bit nicer
|
|
*/
|
|
for (size_t i=0; i<=textLen - splitLen; i++)
|
|
{
|
|
if (strncmp(&text[i], split, splitLen) == 0)
|
|
{
|
|
/* Split hereeeee */
|
|
if (i >= maxLen)
|
|
{
|
|
pContext->StringToLocalUTF8(params[3], maxLen, text, NULL);
|
|
} else {
|
|
pContext->StringToLocalUTF8(params[3], i+1, text, NULL);
|
|
}
|
|
return (cell_t)(i + splitLen);
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static cell_t StripQuotes(IPluginContext *pContext, const cell_t *params)
|
|
{
|
|
char *text;
|
|
size_t length;
|
|
|
|
pContext->LocalToString(params[1], &text);
|
|
length = strlen(text);
|
|
|
|
if (text[0] == '"' && text[length-1] == '"')
|
|
{
|
|
/* Null-terminate */
|
|
text[--length] = '\0';
|
|
/* Move the remaining bytes (including null terminator) down by one */
|
|
memmove(&text[0], &text[1], length);
|
|
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
REGISTER_NATIVES(basicStrings)
|
|
{
|
|
{"BreakString", BreakString},
|
|
{"FloatToString", sm_floattostr},
|
|
{"Format", sm_format},
|
|
{"FormatEx", sm_formatex},
|
|
{"GetCharBytes", GetCharBytes},
|
|
{"IntToString", sm_numtostr},
|
|
{"IsCharAlpha", IsCharAlpha},
|
|
{"IsCharLower", IsCharLower},
|
|
{"IsCharMB", IsCharMB},
|
|
{"IsCharNumeric", IsCharNumeric},
|
|
{"IsCharSpace", IsCharSpace},
|
|
{"IsCharUpper", IsCharUpper},
|
|
{"ReplaceString", ReplaceString},
|
|
{"ReplaceStringEx", ReplaceStringEx},
|
|
{"SplitString", SplitString},
|
|
{"strlen", sm_strlen},
|
|
{"StrContains", sm_contain},
|
|
{"strcmp", sm_strcmp},
|
|
{"strncmp", sm_strncmp},
|
|
{"strcopy", sm_strcopy},
|
|
{"StringToInt", sm_strconvint},
|
|
{"StringToIntEx", StringToIntEx},
|
|
{"StringToFloat", sm_strtofloat},
|
|
{"StringToFloatEx", StringToFloatEx},
|
|
{"StripQuotes", StripQuotes},
|
|
{"TrimString", TrimString},
|
|
{"VFormat", sm_vformat},
|
|
{NULL, NULL},
|
|
};
|