1 /* Fudge unix isatty and fileno for RISCOS */ 2 3 #include "unixstuff.h" 4 #include <math.h> 5 #include <time.h> 6 #include "oslib/osfile.h" 7 8 int fileno(FILE *f) 9 { return (int)f; 10 } 11 12 int isatty(int fn) 13 { return (fn==fileno(stdin)); 14 } 15 16 bits unixtime(bits ld,bits ex) 17 { ld&=0xFF; 18 ld-=51; 19 if(ex<1855547904U) ld--; 20 ex-=1855548004U; 21 return ex/100+42949673U*ld-ld/25; 22 } 23 24 25 /* from RISC OS infozip, preserves filetype in ld */ 26 int acorntime(bits *ex, bits *ld, time_t utime) 27 { 28 unsigned timlo; /* 3 lower bytes of acorn file-time plus carry byte */ 29 unsigned timhi; /* 2 high bytes of acorn file-time */ 30 31 timlo = ((unsigned)utime & 0x00ffffffU) * 100 + 0x00996a00U; 32 timhi = ((unsigned)utime >> 24); 33 timhi = timhi * 100 + 0x0000336eU + (timlo >> 24); 34 if (timhi & 0xffff0000U) 35 return 1; /* calculation overflow, do not change time */ 36 37 /* insert the five time bytes into loadaddr and execaddr variables */ 38 *ex = (timlo & 0x00ffffffU) | ((timhi & 0x000000ffU) << 24); 39 *ld = (*ld & 0xffffff00U) | ((timhi >> 8) & 0x000000ffU); 40 41 return 0; /* subject to future extension to signal overflow */ 42 } 43 44 45 int isdir(char *fn) 46 { int ob; 47 if(xosfile_read_stamped_no_path(fn,&ob,0,0,0,0,0)) return 0; 48 switch (ob) 49 { case osfile_IS_DIR:return 1; 50 case osfile_IS_IMAGE:return 1; 51 } 52 return 0; 53 } 54 55 int isfile(char *fn) 56 { int ob; 57 if(xosfile_read_stamped_no_path(fn,&ob,0,0,0,0,0)) return 0; 58 switch (ob) 59 { case osfile_IS_FILE:return 1; 60 case osfile_IS_IMAGE:return 1; 61 } 62 return 0; 63 } 64 65 int object_exists(char *fn) 66 { int ob; 67 if(xosfile_read_stamped_no_path(fn,&ob,0,0,0,0,0)) return 0; 68 switch (ob) 69 { case osfile_IS_FILE:return 1; 70 case osfile_IS_DIR:return 1; 71 case osfile_IS_IMAGE:return 1; 72 } 73 return 0; 74 } 75
