Added the long options.

[dus.git] / dus.c

diff --git a/dus.c b/dus.c
index a0e1957..f1be9f2 100644 (file)
--- a/dus.c
+++ b/dus.c
@@ -273,37 +273,41 @@ void print_sorted(struct file_with_size *root, int width, int height) {
   char line[BUFFER_SIZE];
   struct file_with_size *node;
   struct file_with_size **nodes;
-  int nb, n, first, last;
+  int nb_nodes, n, first, last;
 
-  nb = 0;
+  nb_nodes = 0;
   for(node = root; node; node = node->next) {
-    nb++;
+    nb_nodes++;
   }
 
-  nodes = safe_malloc(nb * sizeof(struct file_with_size *));
+  nodes = safe_malloc(nb_nodes * sizeof(struct file_with_size *));
 
   n = 0;
   for(node = root; node; node = node->next) {
     nodes[n++] = node;
   }
 
-  qsort(nodes, nb, sizeof(struct file_with_size *), compare_files);
+  qsort(nodes, nb_nodes, sizeof(struct file_with_size *), compare_files);
 
   first = 0;
-  last = nb;
+  last = nb_nodes;
 
   if(forced_height) {
     height = forced_height;
   }
 
-  if(height > 0 && height < nb) {
-    first = nb - height;
+  if(height >= 0 && nb_nodes > height && !show_top && !forced_height) {
+    printf("...\n");
+  }
+
+  if(height > 0 && height < nb_nodes) {
+    first = nb_nodes - height;
   }
 
   if(show_top) {
     n = last;
-    last = nb - first;
-    first = nb - n;
+    last = nb_nodes - first;
+    first = nb_nodes - n;
   }
 
   for(n = first; n < last; n++) {
@@ -320,25 +324,39 @@ void print_sorted(struct file_with_size *root, int width, int height) {
     }
   }
 
+  if(height >= 0 && nb_nodes > height && show_top && !forced_height) {
+    printf("...\n");
+  }
+
   free(nodes);
 }
+
 /**********************************************************************/
+
 void print_help(FILE *out) {
   fprintf(out, "Usage: dus [OPTION]... [FILE]...\n");
   fprintf(out, "Version %s (%s)\n", VERSION_NUMBER, UNAME);
   fprintf(out, "List files and directories sorted according to their size or content size. Take the content of the current directory as argument if none is provided.\n");
   fprintf(out, "\n");
-  fprintf(out, "   -d          ignore files and directories starting with a '.'\n");
-  fprintf(out, "   -f          display size with float values and K, M and G units.\n");
-  fprintf(out, "   -r          reverse the sorting order.\n");
-  fprintf(out, "   -t          show the top of the list.\n");
-  fprintf(out, "   -c <cols>   specificy the number of columns to display. The value -1\n");
+  fprintf(out, "   -d, --ignore-dots\n");
+  fprintf(out, "               ignore files and directories starting with a '.'\n");
+  fprintf(out, "   -f, --fancy\n");
+  fprintf(out, "               display size with float values and K, M and G units.\n");
+  fprintf(out, "   -r, --reverse-order\n");
+  fprintf(out, "               reverse the sorting order.\n");
+  fprintf(out, "   -t, --show-top\n");
+  fprintf(out, "               show the top of the list.\n");
+  fprintf(out, "   -c <cols>, --nb-columns <cols>\n");
+  fprintf(out, "               specificy the number of columns to display. The value -1\n");
   fprintf(out, "               corresponds to no constraint. By default the command\n");
   fprintf(out, "               uses the tty width, or no constraint if the stdout is\n");
   fprintf(out, "               not a tty.\n");
-  fprintf(out, "   -l <lines>  same as -c for number of lines.\n");
-  fprintf(out, "   -h          show this help.\n");
-  fprintf(out, "   -m <size>   size min.\n");
+  fprintf(out, "   -l <lines>, --nb-lines <lines>\n");
+  fprintf(out, "               same as -c for number of lines.\n");
+  fprintf(out, "   -h, --help\n");
+  fprintf(out, "               show this help.\n");
+  fprintf(out, "   -m <size>, --size-min <size>\n");
+  fprintf(out, "               set the listed entries minimum size.\n");
   fprintf(out, "\n");
   fprintf(out, "Report bugs and comments to <francois@fleuret.org>\n");
 }
@@ -355,7 +373,21 @@ int main(int argc, char **argv) {
   setlocale (LC_ALL, "");
 
   while (1) {
-    c = getopt(argc, argv, "dfrtl:c:m:hdu");
+    int option_index = 0;
+    static struct option long_options[] = {
+      { "ignore-dots", no_argument, 0, 'd' },
+      { "reverse-order", no_argument, 0, 'r' },
+      { "show-top", no_argument, 0, 't' },
+      { "help", no_argument, 0, 'h' },
+      { "fancy", no_argument, 0, 'f' },
+      { "nb-columns", 1, 0, 'c' },
+      { "nb-lines", 1, 0, 'l' },
+      { "size-min", 1, 0, 'm' },
+      { 0, 0, 0, 0 }
+    };
+
+    c = getopt_long(argc, argv, "dfrtl:c:m:hd",
+                    long_options, &option_index);
     if (c == -1)
       break;