-/* Read/write "x" from/to "file" as bigendian representation of "size" bits. On
- * failure, return 1, else 0. (As of of now, all extern read/write functions
- * build on top of these.)
- *
- * Only use multiples of 8 greater or equal 32 for "size", so that storage
- * inside uint32_t is possible. Originally a bit number check prefaced the code
- * of both functions. It was removed as redundant due to all possible "size"
- * values being hardcoded into the library (i.e. in all extern functions calling
- * / wrapping around either function). If this ever changes, (re-)insert:
- *
- * if (0 == size || size > 32 || 0 != size % 8)
- * {
- * return 1;
- * }
- */
-static uint8_t read_uintX_bigendian(FILE * file, uint32_t * x, uint8_t size);
-static uint8_t write_uintX_bigendian(FILE * file, uint32_t x, uint8_t size);
+extern FILE * try_fopen(char * path, char * mode, char * f)
+{
+ char * msg1 = "Trouble in ";
+ char * msg2 = " with fopen() (mode '";
+ char * msg3 = "') on path '";
+ char * msg4 = "'.";
+ uint16_t size = strlen(msg1) + strlen(msg2) + strlen(msg3) + strlen(msg4)
+ + strlen(f) + strlen(path) + strlen(mode) + 1;
+ 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, msg);
+ return file_p;
+}
+
+
+
+extern void try_fclose(FILE * file, char * f)
+{
+ exit_trouble(fclose(file), f, "fclose()");
+}
+
+
+
+extern void try_fwrite(void * ptr, size_t size, size_t nmemb, FILE * stream,
+ char * f)
+{
+ exit_trouble(0 == fwrite(ptr, size, nmemb, stream), f, "fwrite()");
+}
+
+
+
+extern void try_fputc(uint8_t c, FILE * file, char * f)
+{
+ exit_trouble(EOF == fputc(c, file), f, "fputc()");
+}
+
+
+
+extern char * try_fgets(char * line, int linemax, FILE * file, char * f)
+{
+ char * test = fgets(line, linemax, file);
+ exit_trouble(NULL == test && ferror(file), f, "fgets()");
+ return test;
+}
+
+
+
+extern int try_fgetc(FILE * file, char * f)
+{
+ int test = fgetc(file);
+ exit_trouble(EOF == test && ferror(file), f, "fgetc()");
+ return test;
+}
+
+
+
+extern uint8_t try_fgetc_noeof(FILE * file, char * f)
+{
+ char * f_name = "try_fgetc_noeof()";
+ int test = try_fgetc(file, f_name);
+ exit_trouble(EOF == test, f, "fgetc() unexpectedly hitting EOF");
+ return (uint8_t) test;
+}
+
+
+
+extern void try_fclose_unlink_rename(FILE * file, char * p1, char * p2,
+ char * f)
+{
+ try_fclose(file, f);
+ char * msg1 = "Trouble in ";
+ char * msg4 = "'.";
+ if (!access(p2, F_OK))
+ {
+ char * msg2 = " with unlink() on path '";
+ uint16_t size = strlen(msg1) + strlen(msg2) + strlen(msg4)
+ + strlen(f) + strlen(p2) + 1;
+ char msg[size];
+ sprintf(msg, "%s%s%s%s%s", msg1, f, msg2, p2, msg4);
+ exit_err(unlink(p2), msg);
+ }
+ char * msg2 = " with rename() from '";
+ char * msg3 = "' to '";
+ uint16_t size = strlen(msg1) + strlen(f) + strlen(msg2) + strlen(p1)
+ + 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), msg);
+}
+
+
+
+extern uint16_t get_linemax(FILE * file, char * f)
+{
+ uint16_t linemax;
+ exit_trouble(textfile_sizes(file, &linemax, NULL), f, "textfile_sizes()");
+ return linemax;
+}