Issue fix for #70

Prevent addition of '\' for files in the current folder on windows

src/dw.c

@@ -941,12 +941,22 @@ void dw_argparsing(int argc, char ** argv, dw_opts * s)
         char * bname = dw_basename(s->imFile);
         s->outFile = malloc(strlen(dname) + strlen(bname) + strlen(s->prefix) + 10);
         assert(s->outFile != NULL);
-        sprintf(s->outFile, "%s%c%s_%s", dname, FILESEP, s->prefix, bname);
+        if (strlen(dname) > 0)
+        {
+            sprintf(s->outFile, "%s%c%s_%s", dname, FILESEP, s->prefix, bname);
+        }
+        else {
+            sprintf(s->outFile, "%s_%s", s->prefix, bname);
+        }
         s->outFolder = malloc(strlen(dname) + 16);
         assert(s->outFolder != NULL);
         sprintf(s->outFolder, "%s%c", dname, FILESEP);
         free(bname);
         free(dname);
+        if (s->verbosity > 1)
+        {
+            printf("outFile: %s\n", s->outFile);
+        } 
     } else {
         char * dname = dw_dirname(s->outFile);
         free(s->outFolder);
@@ -1980,6 +1990,14 @@ float * psf_makeOdd(float * psf, int64_t * pM, int64_t * pN, int64_t *pP)
 void dcw_init_log(dw_opts * s)
 {
     s->log = fopen(s->logFile, "w");
+    if (s->log == NULL)
+    {
+        fprintf(stderr, "Unable to open %s for writing\n", s->logFile);
+        fprintf(stderr,
+            "Please check that you have permissions to write to the folder\n"
+            "and that the drive is not full\n");        
+        exit(EXIT_FAILURE);
+    }
     assert(s->log != NULL);
     show_time(s->log);
     dw_opts_fprint(s->log, s);
@@ -2072,6 +2090,8 @@ fftwf_complex * initial_guess(const int64_t M, const int64_t N, const int64_t P,
             }
         }
     }
+    //printf("writing to one.tif");
+    //fim_tiff_write_float("one.tif", one, NULL, wM, wN, wP);
     //  writetif("one.tif", one, wM, wN, wP);
 
     fftwf_complex * Fone = fft(one, wM, wN, wP);