From 21f2420d42c9062b7250cb87967e454c5de805af Mon Sep 17 00:00:00 2001
From: Imbus <aa>
Date: Sat, 7 Feb 2026 14:55:05 +0100
Subject: [PATCH] Now includes a simple progress bar, percent only

---
 writeimg.c | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/writeimg.c b/writeimg.c
index 99d6b01..3bf4655 100644
--- a/writeimg.c
+++ b/writeimg.c
@@ -29,6 +29,23 @@
 
 #define BYTES_TO_MIB(bts) ((double)bts / (1024 * 1024))
 
+#define BAR_WIDTH 50
+
+void print_progress(int current, int total) {
+    float fraction = (float)current / total;
+    int   filled = (int)(fraction * BAR_WIDTH);
+
+    printf("\r[");
+    for (int i = 0; i < BAR_WIDTH; i++) {
+        if (i < filled)
+            putchar('#');
+        else
+            putchar(' ');
+    }
+    printf("] %3d%%", (int)(fraction * 100));
+    fflush(stdout);
+}
+
 // clang-format off
 const char help[] =
     "Usage:\n"
@@ -80,13 +97,18 @@ int perform_write(write_job_t *job) {
     /* TODO: Checks */
     assert(job->bufsize >= job->block_size);
 
-    int crc = crc32_init();
+    int    crc = crc32_init();
+    size_t b_written = 0;
 
     while (!job->verify_only) {
         ssize_t read_bytes = read(file_fd, job->buffer, job->block_size);
+        assert(read_bytes >= 0);
+
         if (read_bytes == 0) {
             fsync(block_fd);
             crc = crc32_finalize(crc);
+            printf("\nWriting done...\n");
+            assert(job->total_bytes == b_written);
             break; /* Finished */
         }
 
@@ -104,6 +126,7 @@ int perform_write(write_job_t *job) {
             perror("Write");
             exit(EXIT_FAILURE);
         }
+        print_progress(b_written += written_bytes, job->total_bytes);
     }
 
     lseek(block_fd, 0, SEEK_SET);
@@ -113,6 +136,7 @@ int perform_write(write_job_t *job) {
     memset(job->buffer2, 0, BLOCKSIZE);
 
     int crc_back = crc32_init();
+    b_written = 0;
 
     while (1) {
         ssize_t read_file = read(file_fd, job->buffer2, job->block_size);
@@ -125,10 +149,13 @@ int perform_write(write_job_t *job) {
         if (read_file == 0) {
             crc_back = crc32_finalize(crc_back);
             assert(crc_back == crc);
+            assert(job->total_bytes == b_written);
+            printf("\nVerification done!\n");
             break;
         }
 
         crc_back = crc32_update(crc_back, job->buffer, read_file);
+        print_progress(b_written += read_block, job->total_bytes);
 
         int cmp = memcmp((const void *)job->buffer2, (const void *)job->buffer, (size_t)read_file);
         if (0 != cmp) {