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fteqw/plugins/qvm_api.c
Spoike 27a59a0cbc LOTS OF CHANGES. was hoping to get revision 5000 perfect, but really that's never going to happen. this has gone on for too long now. 
vulkan, wasapi, quake injector features added.
irc, avplug, cef plugins/drivers reworked/updated/added
openal reverb, doppler effects added.
'dir' console command now attempts to view clicked files.
lots of warning fixes, should now only be deprecation warnings for most targets (depending on compiler version anyway...).
SendEntity finally reworked to use flags properly.
effectinfo improved, other smc-targetted fixes.
mapcluster stuff now has support for linux.
.basebone+.baseframe now exist in ssqc.
qcc: -Fqccx supports qccx syntax, including qccx hacks. don't expect these to work in fteqw nor dp though.
qcc: rewrote function call handling to use refs rather than defs. this makes struct passing more efficient and makes the __out keyword usable with fields etc.
qccgui: can cope a little better with non-unicode files. can now represent most quake chars.
qcc: suppressed warnings from *extensions.qc

git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@5000 fc73d0e0-1445-4013-8a0c-d673dee63da5
2016-07-12 00:40:13 +00:00

643 lines
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C
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/* An implementation of some 'standard' functions */
/* We use this with msvc too, because msvc's implementations of
_snprintf and _vsnprint differ - besides, this way we can make
sure qvms handle all the printf stuff that dlls do*/
#include "plugin.h"
/*
this is a fairly basic implementation.
don't expect it to do much.
You can probably get a better version from somewhere.
*/
int Q_vsnprintf(char *buffer, size_t maxlen, const char *format, va_list vargs)
{
int tokens=0;
char *string;
char tempbuffer[64];
char sign;
unsigned int _uint;
int _int;
float _float;
int i;
int use0s;
int width, useprepad, plus;
int precision;
if (!maxlen)
return 0;
maxlen--;
while(*format)
{
switch(*format)
{
case '%':
plus = 0;
width= 0;
precision=-1;
useprepad=0;
use0s= 0;
retry:
switch(*(++format))
{
case '-':
useprepad=true;
goto retry;
case '+':
plus = true;
goto retry;
case '.':
precision = 0;
while (format[1] >= '0' && format[1] <= '9')
precision = precision*10+*++format-'0';
goto retry;
case '0':
if (!width)
{
use0s=true;
goto retry;
}
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
width=width*10+*format-'0';
goto retry;
case '%': /*emit a %*/
if (maxlen-- == 0)
{*buffer++='\0';return tokens;}
*buffer++ = *format;
break;
case 's':
string = va_arg(vargs, char *);
if (!string)
string = "(null)";
if (width)
{
while (*string && width--)
{
if (maxlen-- == 0)
{*buffer++='\0';return tokens;}
*buffer++ = *string++;
}
}
else
{
while (*string)
{
if (maxlen-- == 0)
{*buffer++='\0';return tokens;}
*buffer++ = *string++;
}
}
tokens++;
break;
case 'c':
_int = va_arg(vargs, int);
if (maxlen-- == 0)
{*buffer++='\0';return tokens;}
*buffer++ = _int;
tokens++;
break;
case 'p':
if (1)
_uint = (size_t)va_arg(vargs, void*);
else
case 'x':
_uint = va_arg(vargs, unsigned int);
i = sizeof(tempbuffer)-2;
tempbuffer[i+1] = '\0';
while(_uint)
{
tempbuffer[i] = (_uint&0xf) + '0';
if (tempbuffer[i] > '9')
tempbuffer[i] = tempbuffer[i] - ':' + 'a';
_uint/=16;
i--;
}
string = tempbuffer+i+1;
if (!*string)
{
i=61;
string = tempbuffer+i+1;
string[0] = '0';
string[1] = '\0';
}
width -= 62-i;
while (width>0)
{
string--;
if (use0s)
*string = '0';
else
*string = ' ';
width--;
}
while (*string)
{
if (maxlen-- == 0)
{*buffer++='\0';return tokens;}
*buffer++ = *string++;
}
tokens++;
break;
case 'd':
case 'u':
case 'i':
_int = va_arg(vargs, int);
if (useprepad)
{
/*
if (_int >= 1000)
useprepad = 4;
else if (_int >= 100)
useprepad = 3;
else if (_int >= 10)
useprepad = 2;
else if (_int >= 0)
useprepad = 1;
else if (_int <= -1000)
useprepad = 5;
else if (_int <= -100)
useprepad = 4;
else if (_int <= -10)
useprepad = 3;
else
useprepad = 2;
useprepad = precision - useprepad;
Con_Printf("add %i chars\n", useprepad);
while (useprepad>0)
{
if (--maxlen < 0)
{*buffer++='\0';return tokens;}
*buffer++ = ' ';
useprepad--;
}
Con_Printf("%i bytes left\n", maxlen);
*/
}
if (_int < 0)
{
sign = '-';
_int *= -1;
}
else if (plus)
sign = '+';
else
sign = 0;
i = sizeof(tempbuffer)-2;
tempbuffer[sizeof(tempbuffer)-1] = '\0';
while(_int)
{
tempbuffer[i--] = _int%10 + '0';
_int/=10;
}
if (sign)
tempbuffer[i--] = sign;
string = tempbuffer+i+1;
if (!*string)
{
i=61;
string = tempbuffer+i+1;
string[0] = '0';
string[1] = '\0';
}
width -= 62-i;
/* while (width>0)
{
string--;
*string = ' ';
width--;
}
*/
while(width>0)
{
if (maxlen-- == 0)
{*buffer++='\0';return tokens;}
if (use0s)
*buffer++ = '0';
else
*buffer++ = ' ';
width--;
}
while (*string)
{
if (maxlen-- == 0)
{*buffer++='\0';return tokens;}
*buffer++ = *string++;
}
tokens++;
break;
case 'f':
_float = (float)va_arg(vargs, double);
//integer part.
_int = (int)_float;
if (_int < 0)
{
if (maxlen-- == 0)
{*buffer++='\0';return tokens;}
*buffer++ = '-';
_int *= -1;
}
i = sizeof(tempbuffer)-2;
tempbuffer[sizeof(tempbuffer)-1] = '\0';
if (!_int)
{
tempbuffer[i--] = '0';
}
else
{
while(_int)
{
tempbuffer[i--] = _int%10 + '0';
_int/=10;
}
}
string = tempbuffer+i+1;
while (*string)
{
if (maxlen-- == 0)
{*buffer++='\0';return tokens;}
*buffer++ = *string++;
}
_int = sizeof(tempbuffer)-2-i;
//floating point part.
_float -= (int)_float;
i = 0;
tempbuffer[i++] = '.';
if (precision < 0)
precision = 7;
while(_float - (int)_float)
{
if (i > precision) //remove the excess presision.
break;
_float*=10;
tempbuffer[i++] = (int)_float%10 + '0';
}
if (i == 1) //no actual fractional part
{
tokens++;
break;
}
//concatinate to our string
tempbuffer[i] = '\0';
string = tempbuffer;
while (*string)
{
if (maxlen-- == 0)
{*buffer++='\0';return tokens;}
*buffer++ = *string++;
}
tokens++;
break;
default:
string = "ERROR IN FORMAT";
while (*string)
{
if (maxlen-- == 0)
{*buffer++='\0';return tokens;}
*buffer++ = *string++;
}
break;
}
break;
default:
if (maxlen-- == 0)
{*buffer++='\0';return tokens;}
*buffer++ = *format;
break;
}
format++;
}
{*buffer++='\0';return tokens;}
}
int Q_snprintf(char *buffer, size_t maxlen, const char *format, ...)
{
int p;
va_list argptr;
va_start (argptr, format);
p = Q_vsnprintf (buffer, maxlen, format,argptr);
va_end (argptr);
return p;
}
#ifdef Q3_VM
//libc functions that are actually properly supported on all other platforms (c89)
int strlen(const char *s)
{
int len = 0;
while(*s++)
len++;
return len;
}
int strncmp (const char *s1, const char *s2, int count)
{
while (1)
{
if (!count--)
return 0;
if (*s1 != *s2)
return -1; // strings not equal
if (!*s1)
return 0; // strings are equal
s1++;
s2++;
}
return -1;
}
int strnicmp(const char *s1, const char *s2, int count)
{
char c1, c2;
char ct;
while(*s1)
{
if (!count--)
return 0;
c1 = *s1;
c2 = *s2;
if (c1 != c2)
{
if (c1 >= 'a' && c1 <= 'z') c1 = c1-'a' + 'A';
if (c2 >= 'a' && c2 <= 'z') c2 = c2-'a' + 'A';
if (c1 != c2)
return c1<c2?-1:1;
}
s1++;
s2++;
}
if (*s2) //s2 was longer.
return 1;
return 0;
}
int strcmp(const char *s1, const char *s2)
{
while(*s1)
{
if (*s1 != *s2)
return *s1<*s2?-1:1;
s1++;
s2++;
}
if (*s2) //s2 was longer.
return 1;
return 0;
}
int stricmp(const char *s1, const char *s2)
{
char c1, c2;
char ct;
while(*s1)
{
c1 = *s1;
c2 = *s2;
if (c1 != c2)
{
if (c1 >= 'a' && c1 <= 'z') c1 = c1-'a' + 'A';
if (c2 >= 'a' && c2 <= 'z') c2 = c2-'a' + 'A';
if (c1 != c2)
return c1<c2?-1:1;
}
s1++;
s2++;
}
if (*s2) //s2 was longer.
return 1;
return 0;
}
char *strstr(char *str, const char *sub)
{
char *p;
char *p2;
int l = strlen(sub)-1;
if (l < 0)
return NULL;
while(*str)
{
if (*str == *sub)
{
if (!strncmp (str+1, sub+1, l))
return str;
}
str++;
}
return NULL;
}
char *strchr(char *str, char sub)
{
char *p;
char *p2;
while(*str)
{
if (*str == sub)
return str;
str++;
}
return NULL;
}
int atoi(char *str)
{
int sign;
int num = 0;
int base = 10;
while(*(unsigned char*)str < ' ' && *str)
str++;
if (*str == '-')
{
sign = -1;
str++;
}
else sign = 1;
if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
{
base = 16;
str += 2;
}
while(1)
{
if (*str >= '0' && *str <= '9')
num = num*base + (*str - '0');
else if (*str >= 'a' && *str <= 'a'+base-10)
num = num*base + (*str - 'a')+10;
else if (*str >= 'A' && *str <= 'A'+base-10)
num = num*base + (*str - 'A')+10;
else break; //bad char
str++;
}
return num*sign;
}
float atof(char *str)
{
int sign;
float num = 0.0f;
float unit = 1;
while(*(unsigned char*)str < ' ' && *str)
str++;
if (*str == '-')
{
sign = -1;
str++;
}
else sign = 1;
while(1)
{//each time we find a new digit, increase the value of the previous digets by a factor of ten, and add the new
if (*str >= '0' && *str <= '9')
num = num*10 + (*str - '0');
else break; //bad char
str++;
}
if (*str == '.')
{ //each time we find a new digit, decrease the value of the following digits.
str++;
while(1)
{
if (*str >= '0' && *str <= '9')
{
unit /= 10;
num = num + (*str - '0')*unit;
}
else break; //bad char
str++;
}
}
return num*sign;
}
void strcpy(char *d, const char *s)
{
while (*s)
{
*d++ = *s++;
}
*d='\0';
}
static long randx = 1;
void srand(unsigned int x)
{
randx = x;
}
int getseed(void)
{
return randx;
}
int rand(void)
{
return(((randx = randx*1103515245 + 12345)>>16) & 077777);
}
#endif
void Q_strlcpy(char *d, const char *s, int n)
{
int i;
n--;
if (n < 0)
return; //this could be an error
for (i=0; *s; i++)
{
if (i == n)
break;
*d++ = *s++;
}
*d='\0';
}
void Q_strlcat(char *d, const char *s, int n)
{
if (n)
{
int dlen = strlen(d);
int slen = strlen(s)+1;
if (slen > (n-1)-dlen)
slen = (n-1)-dlen;
memcpy(d+dlen, s, slen);
d[n - 1] = 0;
}
}
char *Plug_Info_ValueForKey (const char *s, const char *key, char *out, size_t outsize)
{
int isvalue = 0;
const char *start;
char *oout = out;
*out = 0;
if (*s != '\\')
return out; //gah, get lost with your corrupt infostrings.
start = ++s;
while(1)
{
while(s[0] == '\\' && s[1] == '\\')
s+=2;
if (s[0] != '\\' && *s)
{
s++;
continue;
}
//okay, it terminates here
isvalue = !isvalue;
if (isvalue)
{
if (strlen(key) == s - start && !strncmp(start, key, s - start))
{
s++;
while (outsize --> 1)
{
if (s[0] == '\\' && s[1] == '\\')
s++;
else if (s[0] == '\\' || !s[0])
break;
*out++ = *s++;
}
*out++ = 0;
return oout;
}
}
if (*s)
start = ++s;
else
break;
}
return oout;
}
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