X-Git-Url: https://plomlompom.com/repos/index.html?a=blobdiff_plain;f=src%2Freadwrite.c;h=4bdf5ae3da5eb07038a0b88f06d63e4f34c892e9;hb=7290dec4219eaa2325aa00ef6139f715743dba3a;hp=96505adf4387cc52f4a83241f03098869b0a67d9;hpb=0e6c855b67e0cd3def7196396f3d1f45ff85b692;p=plomrogue
diff --git a/src/readwrite.c b/src/readwrite.c
index 96505ad..4bdf5ae 100644
--- a/src/readwrite.c
+++ b/src/readwrite.c
@@ -1,8 +1,15 @@
/* readwrite.c */
#include "readwrite.h"
-#include /* for FILE typedef, fgetc(), fputc(), fseek() */
+#include /* for FILE typedef, fopen(), fgetc(), fputc(), fseek(),
+ * sprintf(), fwrite(), ferror()
+ */
#include /* for uint8_t, uint16_t, uint32_t */
+#include /* for strlen()*/
+#include /* for unlink() */
+#include "rexit.h" /* for exit_err() */
+#include "misc.h" /* for trouble_msg() */
+#include "main.h" /* for world global */
@@ -26,6 +33,90 @@ 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)
+{
+ char * msg = trouble_msg(f, "fclose()");
+ exit_err(fclose(file), msg);
+ free(msg);
+}
+
+
+
+extern char * try_fgets(char * line, int linemax, FILE * file, char * f)
+{
+ 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,
+ 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)
+{
+ char * msg = trouble_msg(f, "textfile_sizes()");
+ uint16_t linemax;
+ exit_err(textfile_sizes(file, &linemax, NULL), msg);
+ free(msg);
+ return linemax;
+}
+
+
+
extern uint8_t textfile_sizes(FILE * file, uint16_t * linemax_p,
uint16_t * n_lines_p)
{