commit-heatmap-gen

commit 8ff234c24d132d371aa89b497aacf5ffaa9a1152
parent 2e1164be74a2a69f59973a6572b22f36f2479b8e
Author: brookjeynes <me@brookjeynes.dev>
Date:   Thu, 18 Jun 2026 08:33:39 +1000

feat: commits per day

Signed-off-by: brookjeynes <me@brookjeynes.dev>

Diffstat:
M
main.c
 | 
68
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----

1 file changed, 64 insertions(+), 4 deletions(-)
diff --git a/main.c b/main.c
@@ -5,6 +5,11 @@
 #include <string.h>
 #include <time.h>
 
+typedef struct {
+  char date[11]; // "YYYY-MM-DD\0"
+  int count;
+} commits_by_date;
+
 int main(int argc, char *argv[]) {
   int error;
 
@@ -12,9 +17,11 @@ int main(int argc, char *argv[]) {
     fprintf(stderr, "err: author email required\n");
     exit(1);
   }
-
   char *author_email = argv[1];
 
+  commits_by_date commit_tracker[365];
+  int unique_dates = 0;
+
   git_libgit2_init();
 
   git_repository *repo = NULL;
@@ -60,18 +67,71 @@ int main(int argc, char *argv[]) {
       exit(error);
     }
 
-    const char *message = git_commit_message(commit);
     const git_signature *author = git_commit_author(commit);
 
+    if (strcmp(author_email, author->email) != 0) {
+      continue;
+    }
+
     if (author->when.time < year_behind) {
       break;
     }
 
-    if (strcmp(author_email, author->email) == 0) {
-      printf("%s <%s> -> %s\n", author->name, author->email, message);
+    struct tm *lt;
+    char buf[11];
+
+    lt = localtime(&author->when.time);
+    if (strftime(buf, sizeof(buf), "%Y-%m-%d", lt) == 0) {
+      fprintf(stderr, "err: failed to get print time\n");
+      exit(1);
+    }
+
+    int found = 0;
+    for (int j = 0; j < unique_dates; j++) {
+      if (strcmp(commit_tracker[j].date, buf) == 0) {
+        commit_tracker[j].count++;
+        found = 1;
+        break;
+      }
+    }
+
+    if (found == 0) {
+      if (unique_dates < 365) {
+        strcpy(commit_tracker[unique_dates].date, buf);
+        commit_tracker[unique_dates].count = 1;
+        unique_dates++;
+      }
     }
   }
 
+  time_t curr_day = now;
+  while (curr_day > year_behind) {
+    struct tm *lt;
+    char buf[11];
+
+    lt = localtime(&curr_day);
+    if (strftime(buf, sizeof(buf), "%Y-%m-%d", lt) == 0) {
+      fprintf(stderr, "err: failed to get print time\n");
+      exit(1);
+    }
+
+    int found = -1;
+    for (int j = 0; j < unique_dates; j++) {
+      if (strcmp(commit_tracker[j].date, buf) == 0) {
+        found = j;
+        break;
+      }
+    }
+
+    if (found == -1) {
+      printf("%s: 0\n", buf);
+    } else {
+      printf("%s: %d\n", buf, commit_tracker[found].count);
+    }
+
+    curr_day -= (24 * 60 * 60);
+  }
+
   git_libgit2_shutdown();
 
   return 0;