SF patch #474590 -- RISC OS support

1 files changed, 39 insertions, 27 deletions

diff --git a/RISCOS/unixstuff.c b/RISCOS/unixstuff.c
index 10648d264f..83e6212c82 100644
--- a/RISCOS/unixstuff.c
+++ b/RISCOS/unixstuff.c
@@ -1,8 +1,9 @@
 /* Fudge unix isatty and fileno for RISCOS */
 
-#include "h.unixstuff"
+#include "unixstuff.h"
 #include <math.h>
-#include "h.osfile"
+#include <time.h>
+#include "oslib/osfile.h"
 
 int fileno(FILE *f)
 { return (int)f;
@@ -15,48 +16,59 @@ int isatty(int fn)
 bits unixtime(bits ld,bits ex)
 { ld&=0xFF;
   ld-=51;
-  if(ex<1855548004U) ld--;
+  if(ex<1855547904U) ld--;
   ex-=1855548004U;
-  return ex/100+42949672*ld+(95*ld)/100;
+  return ex/100+42949673U*ld-ld/25;
 }
 
-int unlink(char *fname)
-{ remove(fname);
-  return 0;
-}
 
+/* from RISC OS infozip, preserves filetype in ld */
+int acorntime(bits *ex, bits *ld, time_t utime)
+{
+   unsigned timlo;      /* 3 lower bytes of acorn file-time plus carry byte */
+   unsigned timhi;      /* 2 high bytes of acorn file-time */
+
+   timlo = ((unsigned)utime & 0x00ffffffU) * 100 + 0x00996a00U;
+   timhi = ((unsigned)utime >> 24);
+   timhi = timhi * 100 + 0x0000336eU + (timlo >> 24);
+   if (timhi & 0xffff0000U)
+       return 1;        /* calculation overflow, do not change time */
+
+   /* insert the five time bytes into loadaddr and execaddr variables */
+   *ex = (timlo & 0x00ffffffU) | ((timhi & 0x000000ffU) << 24);
+   *ld = (*ld & 0xffffff00U)   | ((timhi >> 8) & 0x000000ffU);
+
+   return 0;            /* subject to future extension to signal overflow */
+}
 
-/*#define RET(k) {printf(" %d\n",k);return k;}*/
-#define RET(k) return k
 
 int isdir(char *fn)
 { int ob;
-/*  printf("isdir %s",fn);*/
-  if(xosfile_read_stamped_no_path(fn,&ob,0,0,0,0,0)) RET(0);
+  if(xosfile_read_stamped_no_path(fn,&ob,0,0,0,0,0)) return 0;
   switch (ob)
-  {   case osfile_IS_DIR:RET(1);
-    case osfile_IS_IMAGE:RET(1);
+  {   case osfile_IS_DIR:return 1;
+    case osfile_IS_IMAGE:return 1;
   }
-  RET(0);
+  return 0;
 }
 
 int isfile(char *fn)
-{ int ob;  /*printf("isfile %s",fn);*/
-  if(xosfile_read_stamped_no_path(fn,&ob,0,0,0,0,0)) RET(0);
+{ int ob;
+  if(xosfile_read_stamped_no_path(fn,&ob,0,0,0,0,0)) return 0;
   switch (ob)
-  {  case osfile_IS_FILE:RET(1);
-    case osfile_IS_IMAGE:RET(1);
+  {  case osfile_IS_FILE:return 1;
+    case osfile_IS_IMAGE:return 1;
   }
-  RET(0);
+  return 0;
 }
 
-int exists(char *fn)
-{ int ob;  /*printf("exists %s",fn);*/
-  if(xosfile_read_stamped_no_path(fn,&ob,0,0,0,0,0)) RET(0);
+int object_exists(char *fn)
+{ int ob;
+  if(xosfile_read_stamped_no_path(fn,&ob,0,0,0,0,0)) return 0;
   switch (ob)
-  {  case osfile_IS_FILE:RET(1);
-      case osfile_IS_DIR:RET(1);
-    case osfile_IS_IMAGE:RET(1);
+  {  case osfile_IS_FILE:return 1;
+      case osfile_IS_DIR:return 1;
+    case osfile_IS_IMAGE:return 1;
   }
-  RET(0);
+  return 0;
 }