ref: 1018d7a7091fd5e0433f501a3474cdc3fec322cc
dir: /lib9/errstr-Nt.c/
#include "lib9.h" #include <Windows.h> static char errstring[ERRMAX]; enum { Magic = 0xffffff }; static void winerror(int e, char *buf, uint nerr) { int r; char buf2[ERRMAX], *p, *q; r = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, 0, e, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buf2, sizeof(buf2), 0); if(r == 0) snprint(buf2, ERRMAX, "windows error %d", e); q = buf2; for(p = buf2; *p; p++) { if(*p == '\r') continue; if(*p == '\n') *q++ = ' '; else *q++ = *p; } *q = '\0'; utfecpy(buf, buf+nerr, buf2); } void werrstr(char *fmt, ...) { va_list arg; va_start(arg, fmt); vseprint(errstring, errstring+sizeof(errstring), fmt, arg); va_end(arg); SetLastError(Magic); } int errstr(char *buf, uint nerr) { DWORD le; le = GetLastError(); if(le == Magic) utfecpy(buf, buf+nerr, errstring); else winerror(le, buf, nerr); return 1; } void oserrstr(char *buf, uint nerr) { winerror(GetLastError(), buf, nerr); }