[libgtop] When pretty-printing an array, don't display 0 elements.

[Robert Roth <robertroth src gnome org>]

commit e2348c24a092717e424b3b031294b72d1df5aca1
Author: Benoit Dejean <bdejean gmail com>
Date:   Sat Feb 28 02:27:52 2015 +0100

    When pretty-printing an array, don't display 0 elements.

 examples/pprint.c |   23 +++++++++++++++--------
 1 files changed, 15 insertions(+), 8 deletions(-)
---
diff --git a/examples/pprint.c b/examples/pprint.c
index c8f80b3..ae018ea 100644
--- a/examples/pprint.c
+++ b/examples/pprint.c
@@ -21,14 +21,21 @@
 #define PPRINT(DATA, FORMAT) printf("\t%4lu B %3lu " #DATA " = " FORMAT "\n", \
 (unsigned long) sizeof buf.DATA, (unsigned long) buf_offsetof(DATA), buf.DATA)
 
-#define PPRINT_ARRAY(ARRAY, SIZE, FORMAT) do { \
-size_t i; \
-printf("\t%4lu B %3lu " #ARRAY "[%lu] = { ", \
-(unsigned long) sizeof buf.ARRAY, (unsigned long) buf_offsetof(ARRAY),\
-(unsigned long) G_N_ELEMENTS(buf.ARRAY)); \
-for(i = 0; i < (SIZE - 1); ++i) printf(".%u = " FORMAT ", ", i, buf.ARRAY[i]); \
-printf(".%u = " FORMAT " }\n", SIZE - 1 , buf.ARRAY[SIZE - 1]); \
-} while(0)
+#define PPRINT_ARRAY(ARRAY, SIZE, FORMAT) do {                         \
+    size_t i;                                                          \
+    printf("\t%4lu B %3lu " #ARRAY "[%lu] = { ",                       \
+          (unsigned long) sizeof buf.ARRAY,                            \
+          (unsigned long) buf_offsetof(ARRAY),                         \
+          (unsigned long) G_N_ELEMENTS(buf.ARRAY));                    \
+    for (i = 0; i < (SIZE); ++i) {                                     \
+      printf(".%u = " FORMAT ", ", i, buf.ARRAY[i]);                   \
+      if (!buf.ARRAY[i] && i < (SIZE - 1) && !buf.ARRAY[i + 1]) {      \
+       do { i++; } while (i < SIZE && !buf.ARRAY[i]);                  \
+       printf("..., ");                                                \
+      }                                                                        \
+    }                                                                  \
+    printf("}\n");                                                     \
+  } while(0)
 
 #define PPRINT_ENTRY_ARRAY(ARRAY, SIZE) do { \
 size_t i; \