From e20226a557859c3935a477255426959a2664d9e1 Mon Sep 17 00:00:00 2001
From: Dirk Engling <erdgeist@erdgeist.org>
Date: Fri, 27 Feb 2026 16:22:32 +0100
Subject: convert bitfields to intranges

---
 src/postprocess/merge_entries.c | 34 ++++++++++++++++++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

(limited to 'src/postprocess/merge_entries.c')

diff --git a/src/postprocess/merge_entries.c b/src/postprocess/merge_entries.c
index 4097a2d..083122d 100644
--- a/src/postprocess/merge_entries.c
+++ b/src/postprocess/merge_entries.c
@@ -193,13 +193,39 @@ static void escape_string(char * s, size_t len) {
   fwrite(s, len, 1, stdout);
 }
 
+static void print_multirange(__uint128_t range) {
+  int bit = 0, start = -1, ranges = 0;
+
+  printf("\"{");
+
+  for (bit = 0; range; bit++, range >>= 1) {
+    if (range & 1) {
+      if (start == -1)
+        start = bit;
+    } else {
+      if (start >= 0) {
+        if (ranges++)
+          printf(",");
+        printf ("[%d,%d)", start, bit);
+      }
+      start = -1;
+    }
+  }
+  if (start >= 0) {
+    if (ranges++)
+      printf(",");
+    printf ("[%d,%d)", start, bit);
+  }
+  printf("}\"\t");
+}
+
 int main(int argc, char **args) {
   MAP tbuch;
   char *ptr;
   entry_t * sort_array;
   int outoff = 0, lines = COLUMNS;
   unsigned long current = 0, i, flag;
-  uint64_t year_list = 0, revflag_list = 0, bizflag_list = 0;
+  __uint128_t year_list = 0, revflag_list = 0, bizflag_list = 0;
 
   if (argc != 2) exit(1);
   tbuch = map_file(args[1], 1);
@@ -257,7 +283,11 @@ int main(int argc, char **args) {
     if (sort_array[i].flag & 0x40 ) revflag_list |= 1LL << sort_array[i].year;
 
     if ((i == current - 1) || compare_entries(sort_array+i, sort_array+i+1)) {
-      printf("%" PRIu64 "\t%" PRIu64 "\t%" PRIu64 "\t", year_list, bizflag_list, revflag_list);
+      // printf("%" PRIu64 "\t%" PRIu64 "\t%" PRIu64 "\t", year_list, bizflag_list, revflag_list);
+      print_multirange(year_list);
+      print_multirange(bizflag_list);
+      print_multirange(revflag_list);
+
       for (int c=2; c<COLUMNS; ++c) {
         int j, started = 0, skipped = 0;
         for (j=0; j<=sort_array[i].rows; ++j) {
-- 
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