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amxmodx/amxmodx/format.cpp

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// 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
#include "amxmodx.h"
#include "format.h"
#include "datastructs.h"
//Adapted from Quake3's vsprintf
// thanks to cybermind for linking me to this :)
//I made the following changes:
// - Fixed spacing to be AMX Mod X standard
// - Added 'n' support, no buffer overflows
// - Templatized input/output buffers
#define ALT 0x00000001 /* alternate form */
#define HEXPREFIX 0x00000002 /* add 0x or 0X prefix */
#define LADJUST 0x00000004 /* left adjustment */
#define LONGDBL 0x00000008 /* long double */
#define LONGINT 0x00000010 /* long integer */
#define QUADINT 0x00000020 /* quad integer */
#define SHORTINT 0x00000040 /* short integer */
#define ZEROPAD 0x00000080 /* zero (as opposed to blank) pad */
#define FPT 0x00000100 /* floating point number */
#define UPPERDIGITS 0x00000200 /* make alpha digits uppercase */
#define to_digit(c) ((c) - '0')
#define is_digit(c) ((unsigned)to_digit(c) <= 9)
#define to_char(n) ((n) + '0')
#define CHECK_ARGS(n) \
if ((arg+n) > args) { \
LogError(amx, AMX_ERR_PARAMS, "String formatted incorrectly - parameter %d (total %d)", arg, args); \
return 0; \
}
template size_t atcprintf<cell, cell>(cell *, size_t, const cell *, AMX *, cell *, int *);
template size_t atcprintf<char, cell>(char *, size_t, const cell *, AMX *, cell *, int *);
template size_t atcprintf<cell, char>(cell *, size_t, const char *, AMX *, cell *, int *);
template size_t atcprintf<char, char>(char *, size_t, const char *, AMX *, cell *, int *);
THash<String, lang_err> BadLang_Table;
static cvar_t *amx_mldebug = NULL;
static cvar_t *amx_cl_langs = NULL;
const char *translate(AMX *amx, cell amxaddr, const char *key)
{
const char *pLangName = NULL;
const char *def = NULL;
int status;
cell *addr = get_amxaddr(amx, amxaddr);
char name[4];
if (addr[0] == LANG_PLAYER)
{
if (!amx_cl_langs)
amx_cl_langs = CVAR_GET_POINTER("amx_client_languages");
if ( (int)amx_cl_langs->value == 0 )
{
pLangName = amxmodx_language->string;
} else {
pLangName = ENTITY_KEYVALUE(GET_PLAYER_POINTER_I(g_langMngr.GetDefLang())->pEdict, "lang");
}
} else if (addr[0] == LANG_SERVER) {
pLangName = amxmodx_language->string;
} else if (addr[0] >= 1 && addr[0] <= gpGlobals->maxClients) {
if (!amx_cl_langs)
amx_cl_langs = CVAR_GET_POINTER("amx_client_languages");
if ( (int)amx_cl_langs->value == 0 )
{
pLangName = amxmodx_language->string;
} else {
pLangName = ENTITY_KEYVALUE(GET_PLAYER_POINTER_I(addr[0])->pEdict, "lang");
}
} else {
get_amxstring_r(amx, amxaddr, name, 3);
pLangName = name;
}
if (!pLangName || !isalpha(pLangName[0]))
{
pLangName = amxmodx_language->string;
}
//next parameter!
def = g_langMngr.GetDef(pLangName, key, status);
if (!amx_mldebug)
amx_mldebug = CVAR_GET_POINTER("amx_mldebug");
bool debug = (amx_mldebug && amx_mldebug->string && (amx_mldebug->string[0] != '\0'));
if (debug)
{
int debug_status;
bool validlang = true;
const char *testlang = amx_mldebug->string;
if (!g_langMngr.LangExists(testlang))
{
AMXXLOG_Error("[AMXX] \"%s\" is an invalid debug language", testlang);
validlang = false;
}
g_langMngr.GetDef(testlang, key, debug_status);
if (validlang && debug_status == ERR_BADKEY)
AMXXLOG_Error("[AMXX] Language key \"%s\" not found for language \"%s\", check \"%s\"", key, testlang, GetFileName(amx));
}
if (def == NULL)
{
if (debug)
{
if (status == ERR_BADLANG && (BadLang_Table.AltFindOrInsert(pLangName).last + 120.0f < gpGlobals->time))
{
AMXXLOG_Error("[AMXX] Language \"%s\" not found", pLangName);
BadLang_Table.AltFindOrInsert(pLangName).last = gpGlobals->time;
}
}
if (addr[0] != LANG_SERVER)
def = g_langMngr.GetDef(amxmodx_language->string, key, status);
if (!def && (strcmp(pLangName, "en") != 0 && strcmp(amxmodx_language->string, "en") != 0))
def = g_langMngr.GetDef("en", key, status);
}
return def;
}
template <typename U, typename S>
void AddString(U **buf_p, size_t &maxlen, const S *string, int width, int prec)
{
int size = 0;
U *buf;
static S nlstr[] = {'(','n','u','l','l',')','\0'};
buf = *buf_p;
if (string == NULL)
{
string = nlstr;
prec = -1;
}
if (prec >= 0)
{
for (size = 0; size < prec; size++)
{
if (string[size] == '\0')
break;
}
} else {
while (string[size++]) ;
size--;
}
if (size > (int)maxlen)
size = maxlen;
/* If precision is provided, make sure we don't truncate a multi-byte character */
if (prec >= size && (string[size - 1] & 1 << 7))
{
size -= UTIL_CheckValidChar((cell *)string + size - 1);
}
maxlen -= size;
width -= size;
while (size--)
*buf++ = static_cast<U>(*string++);
while (width-- > 0 && maxlen)
{
*buf++ = ' ';
maxlen--;
}
*buf_p = buf;
}
template <typename U>
void AddFloat(U **buf_p, size_t &maxlen, double fval, int width, int prec, int flags)
{
int digits; // non-fraction part digits
double tmp; // temporary
U *buf = *buf_p; // output buffer pointer
int val; // temporary
int sign = 0; // 0: positive, 1: negative
int fieldlength; // for padding
int significant_digits = 0; // number of significant digits written
const int MAX_SIGNIFICANT_DIGITS = 16;
// default precision
if (prec < 0)
{
prec = 6;
}
// get the sign
if (fval < 0)
{
fval = -fval;
sign = 1;
}
// compute whole-part digits count
digits = (int)log10(fval) + 1;
// Only print 0.something if 0 < fval < 1
if (digits < 1)
{
digits = 1;
}
// compute the field length
fieldlength = digits + prec + ((prec > 0) ? 1 : 0) + sign;
// minus sign BEFORE left padding if padding with zeros
if (sign && maxlen && (flags & ZEROPAD))
{
*buf++ = '-';
maxlen--;
}
// right justify if required
if ((flags & LADJUST) == 0)
{
while ((fieldlength < width) && maxlen)
{
*buf++ = (flags & ZEROPAD) ? '0' : ' ';
width--;
maxlen--;
}
}
// minus sign AFTER left padding if padding with spaces
if (sign && maxlen && !(flags & ZEROPAD))
{
*buf++ = '-';
maxlen--;
}
// write the whole part
tmp = pow(10.0, digits-1);
while ((digits--) && maxlen)
{
if (++significant_digits > MAX_SIGNIFICANT_DIGITS)
{
*buf++ = '0';
}
else
{
val = (int)(fval / tmp);
*buf++ = '0' + val;
fval -= val * tmp;
tmp *= 0.1;
}
maxlen--;
}
// write the fraction part
if (maxlen && prec)
{
*buf++ = '.';
maxlen--;
}
tmp = pow(10.0, prec);
fval *= tmp;
while (prec-- && maxlen)
{
if (++significant_digits > MAX_SIGNIFICANT_DIGITS)
{
*buf++ = '0';
}
else
{
tmp *= 0.1;
val = (int)(fval / tmp);
*buf++ = '0' + val;
fval -= val * tmp;
}
maxlen--;
}
// left justify if required
if (flags & LADJUST)
{
while ((fieldlength < width) && maxlen)
{
// right-padding only with spaces, ZEROPAD is ignored
*buf++ = ' ';
width--;
maxlen--;
}
}
// update parent's buffer pointer
*buf_p = buf;
}
template <typename U>
void AddBinary(U **buf_p, size_t &maxlen, unsigned int val, int width, int flags)
{
char text[32];
int digits;
U *buf;
digits = 0;
do
{
if (val & 1)
{
text[digits++] = '1';
}
else
{
text[digits++] = '0';
}
val >>= 1;
} while (val);
buf = *buf_p;
if (!(flags & LADJUST))
{
while (digits < width && maxlen)
{
*buf++ = (flags & ZEROPAD) ? '0' : ' ';
width--;
maxlen--;
}
}
while (digits-- && maxlen)
{
*buf++ = text[digits];
width--;
maxlen--;
}
if (flags & LADJUST)
{
while (width-- && maxlen)
{
*buf++ = (flags & ZEROPAD) ? '0' : ' ';
maxlen--;
}
}
*buf_p = buf;
}
template <typename U>
void AddUInt(U **buf_p, size_t &maxlen, unsigned int val, int width, int flags)
{
U text[32];
int digits;
U *buf;
digits = 0;
do {
text[digits++] = '0' + val % 10;
val /= 10;
} while (val);
buf = *buf_p;
if( !(flags & LADJUST) )
{
while (digits < width && maxlen)
{
*buf++ = (flags & ZEROPAD) ? '0' : ' ';
width--;
maxlen--;
}
}
while (digits-- && maxlen)
{
*buf++ = text[digits];
width--;
maxlen--;
}
if (flags & LADJUST)
{
while (width-- && maxlen)
{
*buf++ = (flags & ZEROPAD) ? '0' : ' ';
maxlen--;
}
}
*buf_p = buf;
}
template <typename U>
void AddInt(U **buf_p, size_t &maxlen, int val, int width, int flags)
{
U text[32];
int digits;
int signedVal;
U *buf;
unsigned int unsignedVal;
digits = 0;
signedVal = val;
if (val < 0)
{
/* we want the unsigned version */
unsignedVal = abs(val);
} else {
unsignedVal = val;
}
do {
text[digits++] = '0' + unsignedVal % 10;
unsignedVal /= 10;
} while (unsignedVal);
if (signedVal < 0)
text[digits++] = '-';
buf = *buf_p;
if( !(flags & LADJUST) )
{
while (digits < width && maxlen)
{
*buf++ = (flags & ZEROPAD) ? '0' : ' ';
width--;
maxlen--;
}
}
while (digits-- && maxlen)
{
*buf++ = text[digits];
width--;
maxlen--;
}
if (flags & LADJUST)
{
while (width-- && maxlen)
{
*buf++ = (flags & ZEROPAD) ? '0' : ' ';
maxlen--;
}
}
*buf_p = buf;
}
template <typename U>
void AddHex(U **buf_p, size_t &maxlen, unsigned int val, int width, int flags)
{
U text[32];
int digits;
U *buf;
U digit;
int hexadjust;
if (flags & UPPERDIGITS)
{
hexadjust = 'A' - '9' - 1;
} else {
hexadjust = 'a' - '9' - 1;
}
digits = 0;
do
{
digit = ('0' + val % 16);
if (digit > '9')
{
digit += hexadjust;
}
text[digits++] = digit;
val /= 16;
} while (val);
buf = *buf_p;
if( !(flags & LADJUST) )
{
while (digits < width && maxlen)
{
*buf++ = (flags & ZEROPAD) ? '0' : ' ';
width--;
maxlen--;
}
}
while (digits-- && maxlen)
{
*buf++ = text[digits];
width--;
maxlen--;
}
if (flags & LADJUST)
{
while (width-- && maxlen)
{
*buf++ = (flags & ZEROPAD) ? '0' : ' ';
maxlen--;
}
}
*buf_p = buf;
}
template <typename D, typename S>
size_t atcprintf(D *buffer, size_t maxlen, const S *format, AMX *amx, cell *params, int *param)
{
int arg;
int args = params[0] / sizeof(cell);
D *buf_p;
D ch;
int flags;
int width;
int prec;
int n;
//char sign;
const S *fmt;
size_t llen = maxlen;
buf_p = buffer;
arg = *param;
fmt = format;
while (true)
{
// run through the format string until we hit a '%' or '\0'
for (ch = static_cast<D>(*fmt);
llen && ((ch = static_cast<D>(*fmt)) != '\0' && ch != '%');
fmt++)
{
*buf_p++ = static_cast<D>(ch);
llen--;
}
if (ch == '\0' || llen <= 0)
goto done;
// skip over the '%'
fmt++;
// reset formatting state
flags = 0;
width = 0;
prec = -1;
//sign = '\0';
rflag:
ch = static_cast<D>(*fmt++);
reswitch:
switch(ch)
{
case '-':
flags |= LADJUST;
goto rflag;
case '.':
n = 0;
while( is_digit( ( ch = static_cast<D>(*fmt++)) ) )
n = 10 * n + ( ch - '0' );
prec = n < 0 ? -1 : n;
goto reswitch;
case '0':
flags |= ZEROPAD;
goto rflag;
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
n = 0;
do {
n = 10 * n + ( ch - '0' );
ch = static_cast<D>(*fmt++);
} while( is_digit( ch ) );
width = n;
goto reswitch;
case 'c':
CHECK_ARGS(0);
*buf_p++ = static_cast<D>(*get_amxaddr(amx, params[arg]));
llen--;
arg++;
break;
case 'b':
CHECK_ARGS(0);
AddBinary(&buf_p, llen, *get_amxaddr(amx, params[arg]), width, flags);
arg++;
break;
case 'd':
case 'i':
CHECK_ARGS(0);
AddInt(&buf_p, llen, *get_amxaddr(amx, params[arg]), width, flags);
arg++;
break;
case 'u':
CHECK_ARGS(0);
AddUInt(&buf_p, llen, static_cast<unsigned int>(*get_amxaddr(amx, params[arg])), width, flags);
arg++;
break;
case 'f':
CHECK_ARGS(0);
AddFloat(&buf_p, llen, amx_ctof(*get_amxaddr(amx, params[arg])), width, prec, flags);
arg++;
break;
case 'X':
CHECK_ARGS(0);
flags |= UPPERDIGITS;
AddHex(&buf_p, llen, static_cast<unsigned int>(*get_amxaddr(amx, params[arg])), width, flags);
arg++;
break;
case 'x':
CHECK_ARGS(0);
AddHex(&buf_p, llen, static_cast<unsigned int>(*get_amxaddr(amx, params[arg])), width, flags);
arg++;
break;
case 'a':
{
CHECK_ARGS(0);
// %a is passed a pointer directly to a cell string.
cell* ptr=reinterpret_cast<cell*>(*get_amxaddr(amx, params[arg]));
if (!ptr)
{
LogError(amx, AMX_ERR_NATIVE, "Invalid vector string handle provided (%d)", *get_amxaddr(amx, params[arg]));
return 0;
}
AddString(&buf_p, llen, ptr, width, prec);
arg++;
break;
}
case 's':
CHECK_ARGS(0);
AddString(&buf_p, llen, get_amxaddr(amx, params[arg]), width, prec);
arg++;
break;
case 'L':
{
CHECK_ARGS(1);
cell addr = params[arg++];
int len;
const char *key = get_amxstring(amx, params[arg++], 3, len);
const char *def = translate(amx, addr, key);
if (!def)
{
static char buf[255];
UTIL_Format(buf, sizeof(buf)-1, "ML_NOTFOUND: %s", key);
def = buf;
}
size_t written = atcprintf(buf_p, llen, def, amx, params, &arg);
buf_p += written;
llen -= written;
break;
}
case 'N':
{
CHECK_ARGS(0);
cell *addr = get_amxaddr(amx, params[arg]);
char buffer[255];
if (*addr)
{
CPlayer *player = NULL;
if (*addr >= 1 && *addr <= gpGlobals->maxClients)
{
player = GET_PLAYER_POINTER_I(*addr);
}
if (!player || !player->initialized)
{
LogError(amx, AMX_ERR_NATIVE, "Client index %d is invalid", *addr);
return 0;
}
const char *auth = GETPLAYERAUTHID(player->pEdict);
if (!auth || auth[0] == '\0')
{
auth = "STEAM_ID_PENDING";
}
int userid = GETPLAYERUSERID(player->pEdict);
UTIL_Format(buffer, sizeof(buffer), "%s<%d><%s><%s>", player->name.c_str(), userid, auth, player->team.c_str());
}
else
{
UTIL_Format(buffer, sizeof(buffer), "Console<0><Console><Console>");
}
AddString(&buf_p, llen, buffer, width, prec);
arg++;
break;
}
case 'n':
{
CHECK_ARGS(0);
cell *addr = get_amxaddr(amx, params[arg]);
const char *name = "Console";
if (*addr)
{
CPlayer *player = NULL;
if (*addr >= 1 && *addr <= gpGlobals->maxClients)
{
player = GET_PLAYER_POINTER_I(*addr);
}
if (!player || !player->initialized)
{
LogError(amx, AMX_ERR_NATIVE, "Client index %d is invalid", *addr);
return 0;
}
name = player->name.c_str();
}
AddString(&buf_p, llen, name, width, prec);
arg++;
break;
}
case '%':
*buf_p++ = static_cast<D>(ch);
if (!llen)
goto done;
llen--;
break;
case '\0':
*buf_p++ = static_cast<D>('%');
if (!llen)
goto done;
llen--;
goto done;
break;
default:
*buf_p++ = static_cast<D>(ch);
if (!llen)
goto done;
llen--;
break;
}
}
done:
*buf_p = static_cast<D>(0);
*param = arg;
/* if max buffer length consumed, make sure we don't truncate a multi-byte character */
if (llen <= 0 && *(buf_p - 1) & 1 << 7)
{
llen += UTIL_CheckValidChar(buf_p - 1);
*(buf_p - llen) = static_cast<D>(0);
}
return maxlen-llen;
}
/**
* HACKHACK: The compiler will generate code for each case we need.
* Don't remove this, otherwise files that use certain code generations
* will have extern problems. For each case you need, add dummy code
* here.
*/
void __WHOA_DONT_CALL_ME_PLZ_K_lol_o_O()
{
//acsprintf
atcprintf((cell *)NULL, 0, (const char *)NULL, NULL, NULL, NULL);
//accprintf
atcprintf((cell *)NULL, 0, (cell *)NULL, NULL, NULL, NULL);
//ascprintf
atcprintf((char *)NULL, 0, (cell *)NULL, NULL, NULL, NULL);
}
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