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Location: cpp/openttd-patchpack/source/src/3rdparty/squirrel/sqstdlib/sqstdstring.cpp
r22565:eeb3e099b586
9.0 KiB
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(svn r27772) -Fix [FS#5819]: If the intro game had a savegame version which contains a NewGRF configuration, then townname NewGRFs would not be activated in the game options.
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#include <squirrel.h>
#include <sqstdstring.h>
#include <stdarg.h>
#define scstrchr strchr
#define scatoi atoi
#define scstrtok strtok
#define MAX_FORMAT_LEN 20
#define MAX_WFORMAT_LEN 3
#define ADDITIONAL_FORMAT_SPACE (100*sizeof(SQChar))
static SQInteger validate_format(HSQUIRRELVM v, SQChar *fmt, const SQChar *src, SQInteger n,SQInteger &width)
{
SQChar swidth[MAX_WFORMAT_LEN];
SQInteger wc = 0;
SQInteger start = n;
fmt[0] = '%';
while (scstrchr("-+ #0", src[n])) n++;
while (isdigit(src[n])) {
swidth[wc] = src[n];
n++;
wc++;
if(wc>=MAX_WFORMAT_LEN)
return sq_throwerror(v,"width format too long");
}
swidth[wc] = '\0';
if(wc > 0) {
width = atoi(swidth);
}
else
width = 0;
if (src[n] == '.') {
n++;
wc = 0;
while (isdigit(src[n])) {
swidth[wc] = src[n];
n++;
wc++;
if(wc>=MAX_WFORMAT_LEN)
return sq_throwerror(v,"precision format too long");
}
swidth[wc] = '\0';
if(wc > 0) {
width += atoi(swidth);
}
}
if (n-start > MAX_FORMAT_LEN )
return sq_throwerror(v,"format too long");
memcpy(&fmt[1],&src[start],((n-start)+1)*sizeof(SQChar));
fmt[(n-start)+2] = '\0';
return n;
}
/*
* Little hack to remove the "format not a string literal, argument types not checked" warning.
* This check has been added to OpenTTD to make sure that nobody passes wrong string literals,
* but three lines in Squirrel have a little problem with those. Therefor we use this hack
* which basically uses vsnprintf instead of sprintf as vsnprintf is not testing for the right
* string literal at compile time.
*/
static void _append_string(SQInteger &i, SQChar *dest, SQInteger allocated, const SQChar *fmt, ...)
{
va_list va;
va_start(va, fmt);
i += vsnprintf(&dest[i],allocated-i,fmt,va);
va_end(va);
}
SQRESULT sqstd_format(HSQUIRRELVM v,SQInteger nformatstringidx,SQInteger *outlen,SQChar **output)
{
const SQChar *format;
SQChar *dest;
SQChar fmt[MAX_FORMAT_LEN];
sq_getstring(v,nformatstringidx,&format);
SQInteger allocated = (sq_getsize(v,nformatstringidx)+2)*sizeof(SQChar);
dest = sq_getscratchpad(v,allocated);
SQInteger n = 0,i = 0, nparam = nformatstringidx+1, w = 0;
while(format[n] != '\0') {
if(format[n] != '%') {
assert(i < allocated);
dest[i++] = format[n];
n++;
}
else if(format[n+1] == '%') { //handles %%
dest[i++] = '%';
n += 2;
}
else {
n++;
if( nparam > sq_gettop(v) )
return sq_throwerror(v,"not enough paramters for the given format string");
n = validate_format(v,fmt,format,n,w);
if(n < 0) return -1;
SQInteger addlen = 0;
SQInteger valtype = 0;
const SQChar *ts;
SQInteger ti;
SQFloat tf;
switch(format[n]) {
case 's':
if(SQ_FAILED(sq_getstring(v,nparam,&ts)))
return sq_throwerror(v,"string expected for the specified format");
addlen = (sq_getsize(v,nparam)*sizeof(SQChar))+((w+1)*sizeof(SQChar));
valtype = 's';
break;
case 'i': case 'd': case 'c':case 'o': case 'u': case 'x': case 'X':
if(SQ_FAILED(sq_getinteger(v,nparam,&ti)))
return sq_throwerror(v,"integer expected for the specified format");
addlen = (ADDITIONAL_FORMAT_SPACE)+((w+1)*sizeof(SQChar));
valtype = 'i';
break;
case 'f': case 'g': case 'G': case 'e': case 'E':
if(SQ_FAILED(sq_getfloat(v,nparam,&tf)))
return sq_throwerror(v,"float expected for the specified format");
addlen = (ADDITIONAL_FORMAT_SPACE)+((w+1)*sizeof(SQChar));
valtype = 'f';
break;
default:
return sq_throwerror(v,"invalid format");
}
n++;
allocated += addlen + sizeof(SQChar);
dest = sq_getscratchpad(v,allocated);
switch(valtype) {
case 's': _append_string(i,dest,allocated,fmt,ts); break;
case 'i': _append_string(i,dest,allocated,fmt,ti); break;
case 'f': _append_string(i,dest,allocated,fmt,tf); break;
};
nparam ++;
}
}
*outlen = i;
dest[i] = '\0';
*output = dest;
return SQ_OK;
}
static SQInteger _string_format(HSQUIRRELVM v)
{
SQChar *dest = NULL;
SQInteger length = 0;
if(SQ_FAILED(sqstd_format(v,2,&length,&dest)))
return -1;
sq_pushstring(v,dest,length);
return 1;
}
static void __strip_l(const SQChar *str,const SQChar **start)
{
const SQChar *t = str;
while(((*t) != '\0') && isspace(*t)){ t++; }
*start = t;
}
static void __strip_r(const SQChar *str,SQInteger len,const SQChar **end)
{
if(len == 0) {
*end = str;
return;
}
const SQChar *t = &str[len-1];
while(t != str && isspace(*t)) { t--; }
*end = t+1;
}
static SQInteger _string_strip(HSQUIRRELVM v)
{
const SQChar *str,*start,*end;
sq_getstring(v,2,&str);
SQInteger len = sq_getsize(v,2);
__strip_l(str,&start);
__strip_r(str,len,&end);
sq_pushstring(v,start,end - start);
return 1;
}
static SQInteger _string_lstrip(HSQUIRRELVM v)
{
const SQChar *str,*start;
sq_getstring(v,2,&str);
__strip_l(str,&start);
sq_pushstring(v,start,-1);
return 1;
}
static SQInteger _string_rstrip(HSQUIRRELVM v)
{
const SQChar *str,*end;
sq_getstring(v,2,&str);
SQInteger len = sq_getsize(v,2);
__strip_r(str,len,&end);
sq_pushstring(v,str,end - str);
return 1;
}
static SQInteger _string_split(HSQUIRRELVM v)
{
const SQChar *str,*seps;
SQChar *stemp,*tok;
sq_getstring(v,2,&str);
sq_getstring(v,3,&seps);
if(sq_getsize(v,3) == 0) return sq_throwerror(v,"empty separators string");
SQInteger memsize = (sq_getsize(v,2)+1)*sizeof(SQChar);
stemp = sq_getscratchpad(v,memsize);
memcpy(stemp,str,memsize);
tok = scstrtok(stemp,seps);
sq_newarray(v,0);
while( tok != NULL ) {
sq_pushstring(v,tok,-1);
sq_arrayappend(v,-2);
tok = scstrtok( NULL, seps );
}
return 1;
}
#define SETUP_REX(v) \
SQRex *self = NULL; \
sq_getinstanceup(v,1,(SQUserPointer *)&self,0);
static SQInteger _rexobj_releasehook(SQUserPointer p, SQInteger size)
{
SQRex *self = ((SQRex *)p);
sqstd_rex_free(self);
return 1;
}
static SQInteger _regexp_match(HSQUIRRELVM v)
{
SETUP_REX(v);
const SQChar *str;
sq_getstring(v,2,&str);
if(sqstd_rex_match(self,str) == SQTrue)
{
sq_pushbool(v,SQTrue);
return 1;
}
sq_pushbool(v,SQFalse);
return 1;
}
static void _addrexmatch(HSQUIRRELVM v,const SQChar *str,const SQChar *begin,const SQChar *end)
{
sq_newtable(v);
sq_pushstring(v,"begin",-1);
sq_pushinteger(v,begin - str);
sq_rawset(v,-3);
sq_pushstring(v,"end",-1);
sq_pushinteger(v,end - str);
sq_rawset(v,-3);
}
static SQInteger _regexp_search(HSQUIRRELVM v)
{
SETUP_REX(v);
const SQChar *str,*begin,*end;
SQInteger start = 0;
sq_getstring(v,2,&str);
if(sq_gettop(v) > 2) sq_getinteger(v,3,&start);
if(sqstd_rex_search(self,str+start,&begin,&end) == SQTrue) {
_addrexmatch(v,str,begin,end);
return 1;
}
return 0;
}
static SQInteger _regexp_capture(HSQUIRRELVM v)
{
SETUP_REX(v);
const SQChar *str,*begin,*end;
SQInteger start = 0;
sq_getstring(v,2,&str);
if(sq_gettop(v) > 2) sq_getinteger(v,3,&start);
if(sqstd_rex_search(self,str+start,&begin,&end) == SQTrue) {
SQInteger n = sqstd_rex_getsubexpcount(self);
SQRexMatch match;
sq_newarray(v,0);
for(SQInteger i = 0;i < n; i++) {
sqstd_rex_getsubexp(self,i,&match);
if(match.len > 0)
_addrexmatch(v,str,match.begin,match.begin+match.len);
else
_addrexmatch(v,str,str,str); //empty match
sq_arrayappend(v,-2);
}
return 1;
}
return 0;
}
static SQInteger _regexp_subexpcount(HSQUIRRELVM v)
{
SETUP_REX(v);
sq_pushinteger(v,sqstd_rex_getsubexpcount(self));
return 1;
}
static SQInteger _regexp_constructor(HSQUIRRELVM v)
{
const SQChar *error,*pattern;
sq_getstring(v,2,&pattern);
SQRex *rex = sqstd_rex_compile(pattern,&error);
if(!rex) return sq_throwerror(v,error);
sq_setinstanceup(v,1,rex);
sq_setreleasehook(v,1,_rexobj_releasehook);
return 0;
}
static SQInteger _regexp__typeof(HSQUIRRELVM v)
{
sq_pushstring(v,"regexp",-1);
return 1;
}
#define _DECL_REX_FUNC(name,nparams,pmask) {#name,_regexp_##name,nparams,pmask}
static SQRegFunction rexobj_funcs[]={
_DECL_REX_FUNC(constructor,2,".s"),
_DECL_REX_FUNC(search,-2,"xsn"),
_DECL_REX_FUNC(match,2,"xs"),
_DECL_REX_FUNC(capture,-2,"xsn"),
_DECL_REX_FUNC(subexpcount,1,"x"),
_DECL_REX_FUNC(_typeof,1,"x"),
{0,0,0,0}
};
#define _DECL_FUNC(name,nparams,pmask) {#name,_string_##name,nparams,pmask}
static SQRegFunction stringlib_funcs[]={
_DECL_FUNC(format,-2,".s"),
_DECL_FUNC(strip,2,".s"),
_DECL_FUNC(lstrip,2,".s"),
_DECL_FUNC(rstrip,2,".s"),
_DECL_FUNC(split,3,".ss"),
{0,0,0,0}
};
SQInteger sqstd_register_stringlib(HSQUIRRELVM v)
{
sq_pushstring(v,"regexp",-1);
sq_newclass(v,SQFalse);
SQInteger i = 0;
while(rexobj_funcs[i].name != 0) {
SQRegFunction &f = rexobj_funcs[i];
sq_pushstring(v,f.name,-1);
sq_newclosure(v,f.f,0);
sq_setparamscheck(v,f.nparamscheck,f.typemask);
sq_setnativeclosurename(v,-1,f.name);
sq_createslot(v,-3);
i++;
}
sq_createslot(v,-3);
i = 0;
while(stringlib_funcs[i].name!=0)
{
sq_pushstring(v,stringlib_funcs[i].name,-1);
sq_newclosure(v,stringlib_funcs[i].f,0);
sq_setparamscheck(v,stringlib_funcs[i].nparamscheck,stringlib_funcs[i].typemask);
sq_setnativeclosurename(v,-1,stringlib_funcs[i].name);
sq_createslot(v,-3);
i++;
}
return 1;
}
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