Some shortening / re-styling of place_win()'s code and comments.

[plomrogue] / src / readwrite.c

diff --git a/src/readwrite.c b/src/readwrite.c
index 4b2f2a6af37628511c2e1dcc5fbc5327a06d9a68..4bdf5ae3da5eb07038a0b88f06d63e4f34c892e9 100644 (file)
--- a/src/readwrite.c
+++ b/src/readwrite.c
@@ -2,14 +2,14 @@
 
 #include "readwrite.h"
 #include <stdio.h>  /* for FILE typedef, fopen(), fgetc(), fputc(), fseek(),
-                     * sprintf()
+                     * sprintf(), fwrite(), ferror()
                      */
 #include <stdint.h> /* for uint8_t, uint16_t, uint32_t */
 #include <string.h> /* for strlen()*/
 #include <unistd.h> /* for unlink() */
 #include "rexit.h"  /* for exit_err() */
 #include "misc.h"   /* for trouble_msg() */
-struct World;
+#include "main.h"   /* for world global */
 
 
 
@@ -33,7 +33,7 @@ static uint8_t write_uintX_bigendian(FILE * file, uint32_t x, uint8_t size);
 
 
 
-extern FILE * try_fopen(char * path, char * mode, struct World * w, char * f)
+extern FILE * try_fopen(char * path, char * mode, char * f)
 {
     char * msg1 = "Trouble in ";
     char * msg2 = " with fopen() (mode '";
@@ -44,35 +44,46 @@ extern FILE * try_fopen(char * path, char * mode, struct World * w, char * f)
     char msg[size];
     sprintf(msg, "%s%s%s%s%s%s%s", msg1, f, msg2, mode, msg3, path, msg4);
     FILE * file_p = fopen(path, mode);
-    exit_err(NULL == file_p, w, msg);
+    exit_err(NULL == file_p, msg);
     return file_p;
 }
 
 
 
-extern void try_fclose(FILE * file, struct World * w, char * f)
+extern void try_fclose(FILE * file, char * f)
 {
-    char * msg = trouble_msg(w, f, "fclose()");
-    exit_err(fclose(file), w, msg);
+    char * msg = trouble_msg(f, "fclose()");
+    exit_err(fclose(file), msg);
     free(msg);
 }
 
 
 
-extern void try_fgets(char * line, int linemax, FILE * file,
-                      struct World * w, char * f)
+extern char * try_fgets(char * line, int linemax, FILE * file, char * f)
 {
-    char * msg = trouble_msg(w, f, "fgets()");
-    exit_err(NULL == fgets(line, linemax, file), w, msg);
+    char * msg = trouble_msg(f, "fgets()");
+    char * test = fgets(line, linemax, file);
+    exit_err(NULL == test && ferror(file), msg);
+    free(msg);
+    return test;
+}
+
+
+
+extern void try_fwrite(void * ptr, size_t size, size_t nmemb, FILE * stream,
+                       char * f)
+{
+    char * msg = trouble_msg(f, "fwrite()");
+    exit_err(0 == fwrite(ptr, size, nmemb, stream), msg);
     free(msg);
 }
 
 
 
 extern void try_fclose_unlink_rename(FILE * file, char * p1, char * p2,
-                                     struct World * w, char * f)
+                                     char * f)
 {
-    try_fclose(file, w, f);
+    try_fclose(file, f);
     char * msg1 = "Trouble in ";
     char * msg4 = "'.";
     if (!access(p2, F_OK))
@@ -82,7 +93,7 @@ extern void try_fclose_unlink_rename(FILE * file, char * p1, char * p2,
                         + strlen(f) + strlen(p2) + 1;
         char msg[size];
         sprintf(msg, "%s%s%s%s%s", msg1, f, msg2, p2, msg4);
-        exit_err(unlink(p2), w, msg);
+        exit_err(unlink(p2), msg);
     }
     char * msg2 = " with rename() from '";
     char * msg3 = "' to '";
@@ -90,16 +101,16 @@ extern void try_fclose_unlink_rename(FILE * file, char * p1, char * p2,
                     + strlen(msg3) + strlen(p2) + strlen(msg4) + 1;
     char msg[size];
     sprintf(msg, "%s%s%s%s%s%s%s", msg1, f, msg2, p1, msg3, p2, msg4);
-    exit_err(rename(p1, p2), w, msg);
+    exit_err(rename(p1, p2), msg);
 }
 
 
 
-extern uint16_t get_linemax(FILE * file, struct World * w, char * f)
+extern uint16_t get_linemax(FILE * file, char * f)
 {
-    char * msg = trouble_msg(w, f, "textfile_sizes()");
+    char * msg = trouble_msg(f, "textfile_sizes()");
     uint16_t linemax;
-    exit_err(textfile_sizes(file, &linemax, NULL), w, msg);
+    exit_err(textfile_sizes(file, &linemax, NULL), msg);
     free(msg);
     return linemax;
 }