task

commit c04a3d6846cb3ef7bad9300519a5bb4e1c2a2568
parent 9cbc8b6361d405aebca8c8f9f50dd02d95500c73
Author: brookjeynes <me@brookjeynes.dev>
Date:   Thu, 11 Jun 2026 14:15:06 +1000

fix: handle runtime errors

Diffstat:
M
main.c
 | 
49
+++++++++++++++++++++++++++++++++++++++++++------

1 file changed, 43 insertions(+), 6 deletions(-)
diff --git a/main.c b/main.c
@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <errno.h>
 #include <unistd.h>
 
 struct options {
@@ -97,22 +98,58 @@ int main(int argc, char *argv[]) {
 
   FILE *f = fopen(title_to_file, "wx");
   if (f == NULL) {
-    fprintf(stderr, "err: failed to open file. the file may already exist\n");
+    fprintf(stderr, "err: failed to open file: %s\n", strerror(errno));
     exit(1);
   }
 
+  int write_failed = 0;
+  int write_errno = 0;
   if (cli_args.priority != '\0') {
-    fprintf(f, "(%c) ", cli_args.priority);
+    if (fprintf(f, "(%c) ", cli_args.priority) < 0) {
+      write_failed = 1;
+      write_errno = errno;
+    }
   }
 
-  fprintf(f, "%s", cli_args.title);
+  if (fprintf(f, "%s", cli_args.title) < 0) {
+    if (!write_failed) {
+      write_failed = 1;
+      write_errno = errno;
+    }
+  }
 
   if (cli_args.properties != NULL) {
-    fprintf(f, " %s", cli_args.properties);
+    if (fprintf(f, " %s", cli_args.properties) < 0) {
+      if (!write_failed) {
+        write_failed = 1;
+        write_errno = errno;
+      }
+    }
+  }
+
+  if (fprintf(f, "\n") < 0) {
+    if (!write_failed) {
+      write_failed = 1;
+      write_errno = errno;
+    }
   }
 
-  fprintf(f, "\n");
-  fclose(f);
+  int close_failed = 0;
+  int close_errno = 0;
+  if (fclose(f) != 0) {
+    close_failed = 1;
+    close_errno = errno;
+  }
+
+  if (write_failed) {
+    fprintf(stderr, "err: failed to write file: %s\n", strerror(write_errno));
+    exit(1);
+  }
+
+  if (close_failed) {
+    fprintf(stderr, "err: failed to close file: %s\n", strerror(close_errno));
+    exit(1);
+  }
 
   char *editor = getenv("EDITOR");
   if (editor == NULL) {