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 }