X-Git-Url: https://plomlompom.com/repos/?a=blobdiff_plain;f=src%2Freadwrite.h;h=bebcdc058c39ee6c1298f0b37acf8fec2858efbe;hb=550d22ec0c3f530f5d317746f3f7e75251a1de4b;hp=128e44a8a3e5534e40c7a98fa8feba800d53788f;hpb=0e6c855b67e0cd3def7196396f3d1f45ff85b692;p=plomrogue

diff --git a/src/readwrite.h b/src/readwrite.h
index 128e44a..bebcdc0 100644
--- a/src/readwrite.h
+++ b/src/readwrite.h
@@ -10,6 +10,36 @@
 
 #include <stdio.h> /* for FILE typedef */
 #include <stdint.h> /* for uint8_t, uint16_t, uint32_t */
+struct World;
+
+
+
+/* Wrappers to calling from function called "f" of fopen(), fclose(), fgets()
+ * and fwrite() and calling exit_err() with appropriate error messages.
+ */
+extern FILE * try_fopen(char * path, char * mode, struct World * w, char * f);
+extern void try_fclose(FILE * file, struct World * w, char * f);
+extern void try_fgets(char * line, int size, FILE * file,
+                      struct World * w, char * f);
+extern void try_fwrite(void * ptr, size_t size, size_t nmemb, FILE * stream,
+                       struct World * w, char * f);
+
+
+
+/* Wrapper to successive call of fclose() from function called "f" on "file",
+ * then unlink() on file at "p2" if it exists, then rename() on "p1" to "p2".
+ * Used for handling atomic saving of files via temp files.
+ */
+extern void try_fclose_unlink_rename(FILE * file, char * p1, char * p2,
+                                     struct World * w, char * f);
+
+
+
+/* Wrapper: Call textfile_sizes() from function called "f" to get max line
+ * length of "file", exit via exit_err() with trouble_msg()-generated error
+ * message on failure.
+ */
+extern uint16_t get_linemax(FILE * file, struct World * w, char * f);
 
 
 
@@ -25,8 +55,8 @@ extern uint8_t textfile_sizes(FILE * file, uint16_t * linemax_p,
 
 
 
-/* These routines for reading values "x" from / writing values to "file" ensure a
- * defined endianness and consistent error codes: return 0 on success and 1 on
+/* These routines for reading values "x" from / writing values to "file" ensure
+ * a defined endianness and consistent error codes: return 0 on success and 1 on
  * fgetc()/fputc() failure.
  */
 extern uint8_t read_uint8(FILE * file, uint8_t * x);