common.cpp

#include "common.h"

Com_DPrintf_t Com_DPrintf = (Com_DPrintf_t)0x439D20;
Com_Printf_t Com_Printf = (Com_Printf_t)0x439CC0;
Com_Error_t Com_Error = (Com_Error_t)0x43A020;
Cmd_AddCommand_t Cmd_AddCommand = (Cmd_AddCommand_t)0x42C3B0;

int Q_vsnprintf(char *dest, int size, const char *fmt, va_list argptr) {
	int ret;

#ifdef _WIN32
#undef _vsnprintf
	ret = _vsnprintf(dest, size - 1, fmt, argptr);
#define _vsnprintf  use_idStr_vsnPrintf
#else
#undef vsnprintf
	ret = vsnprintf(dest, size, fmt, argptr);
#define vsnprintf   use_idStr_vsnPrintf
#endif
	dest[size - 1] = '\0';
	if (ret < 0 || ret >= size) {
		return -1;
	}
	return ret;
}

char *va(char *format, ...) {
	va_list argptr;
#define MAX_VA_STRING   32000
	static char temp_buffer[MAX_VA_STRING];
	static char string[MAX_VA_STRING];      // in case va is called by nested functions
	static int index = 0;
	char    *buf;
	int len;


	va_start(argptr, format);
	vsprintf(temp_buffer, format, argptr);
	va_end(argptr);

	if ((len = strlen(temp_buffer)) >= MAX_VA_STRING) {
		Com_Error( ERR_DROP, "Attempted to overrun string in call to va()\n" );
	}

	if (len + index >= MAX_VA_STRING - 1) {
		index = 0;
	}

	buf = &string[index];
	memcpy(buf, temp_buffer, len + 1);

	index += len + 1;

	return buf;
}