distromatic.c: add a sources file with the list of number of requirements per package to detect leaves (package that can be removed without breaking deps)

src/distromatic.c

@@ -1264,6 +1264,40 @@ main(int argc, char *argv[])
                 currheadersourcelist = currheadersourcelist->next;
              }
           }
+
+          // write list of left packages (not required by any other package)
+          char allsources_filename[PATH_MAX];
+          FILE  *afs;
+          snprintf(allsources_filename, PATH_MAX, "%ssources", configtag->html_dir);
+          afs=fopen(allsources_filename,"w");
+          if (!afs) {
+             fprintf(stderr, "Error: can't open file for writing: %s. Aborting.\n", allsources_filename);
+             exit(1);
+          }
+          currheadersourcelist = configtag->headersourcelist;
+          long tot;
+          fprintf(afs,"# Number of times each source and related builds are internally required\n# src");
+          for (i = 0; i < ARCHS_MAX && configtag->arch[i]; i++) {
+             tot += currheadersourcelist->childrenrequiredcount[i];
+             fprintf(afs," %s", configtag->arch[i]);
+          }
+          fprintf(afs," tot\n");
+          while (currheadersourcelist != NULL) {
+             tot = 0;
+             fprintf(afs,"%s:", currheadersourcelist->name);
+             for (i = 0; i < ARCHS_MAX && configtag->arch[i]; i++) {
+                tot += currheadersourcelist->childrenrequiredcount[i];
+                if (currheadersourcelist->firstchild[i])
+                   fprintf(afs," %ld",
+                      currheadersourcelist->childrenrequiredcount[i]);
+                else
+                   fprintf(afs," -");
+             }
+             fprintf(afs," %ld\n", tot);
+             currheadersourcelist = currheadersourcelist->next;
+          }
+          fclose(afs);
+
      } // if (genheader_mode)
 
      if (mode & MODE_SQLITE3) {

src/headerlist.c

@@ -1084,6 +1084,7 @@ int addToSourceHeaderList(struct configTag *ct, int mode, int altrepository) {
               newheadersourcelist->next = NULL;
               for (arch = 0; arch < ARCHS_MAX; arch++) {
                  newheadersourcelist->firstchild[arch] = NULL;
+                 newheadersourcelist->childrenrequiredcount[arch] = 0;
               }
               newheadersourcelist->updatingparent = NULL;
               newheadersourcelist->altrepository = altrepository;
@@ -1231,6 +1232,7 @@ int addToSourceHeaderList(struct configTag *ct, int mode, int altrepository) {
              newheadersourcelist->next = NULL;
              for (arch = 0; arch < ARCHS_MAX; arch++) {
                 newheadersourcelist->firstchild[arch] = NULL;
+                newheadersourcelist->childrenrequiredcount[arch] = 0;
              }
              newheadersourcelist->updatingparent = NULL;
              newheadersourcelist->altrepository = altrepository;

src/include/headerlist.h

@@ -140,6 +140,7 @@ struct headerSourceList {
      struct warningList *firstwarning;
      struct headerSourceList *updatingparent;
      struct rebuildList *firstrebuild;
+     long childrenrequiredcount[ARCHS_MAX];
      long id;
 };
 

src/reports.c

@@ -1849,8 +1849,9 @@ int print_datatables(struct configTag *ct, int arch) {
                       strcmp(currheaderlist->require[i-1]->resolved->provider[0]->name,
                       currheaderlist->require[i]->resolved->provider[0]->name)) &&
                       strcmp(currheaderlist->name,
-                         currheaderlist->require[i]->resolved->provider[0]->name))
+                         currheaderlist->require[i]->resolved->provider[0]->name)) {
                    fprintf(fd,"%s ",currheaderlist->require[i]->resolved->provider[0]->name);
+               }
             } else {
                if (i == 0 ||
                      !currheaderlist->require[i-1]->resolved ||
@@ -1861,6 +1862,10 @@ int print_datatables(struct configTag *ct, int arch) {
                   fprintf(fd," ");
                }
             }
+            for (int j = 0; j < currheaderlist->require[i]->resolved->numproviders; j++) {
+                if (currheaderlist->require[i]->resolved->provider[j]->sourceheader != currheaderlist->sourceheader)
+                   currheaderlist->require[i]->resolved->provider[j]->sourceheader->childrenrequiredcount[arch]++;
+            }
          }
       }
       fprintf(fd,"\n");
@@ -1874,6 +1879,12 @@ int print_datatables(struct configTag *ct, int arch) {
                strncmp("debuginfo(build-id)",currheaderlist->sourceheader->require[i]->name,20)) {
             fprintf(fbd," ");
             fprintf_depstable_filtered_var(fbd,currheaderlist->sourceheader->require[i]->name);
+            if (currheaderlist->sourceheader->require[i]->resolved) {
+               for (int j = 0; j < currheaderlist->sourceheader->require[i]->resolved->numproviders; j++) {
+                  if (currheaderlist->sourceheader->require[i]->resolved->provider[j]->sourceheader != currheaderlist->sourceheader)
+                     currheaderlist->sourceheader->require[i]->resolved->provider[j]->sourceheader->childrenrequiredcount[arch]++;
+               }
+            }
          }
       }