core: Add gpgme_data_set_flag to add more meta data to data objects.

* src/gpgme.h.in (gpgme_data_set_flag): New public function.
* src/data.c (gpgme_data_set_flag): New.
(_gpgme_data_get_size_hint): New.
* src/data.h (strucy gpgme_data): Add field 'size_hint'.
* src/gpgme.def, src/libgpgme.vers: Add new function.
* src/conversion.c (_gpgme_string_to_off): New.

Signed-off-by: Werner Koch <[email protected]>

1 files changed, 19 insertions, 0 deletions

diff --git a/src/conversion.c b/src/conversion.c
index c2b27a16..3df8fe59 100644
--- a/src/conversion.c
+++ b/src/conversion.c
@@ -364,6 +364,25 @@ _gpgme_strtoul_field (const char *string, unsigned long *result)
 }
 
 
+/* Convert STRING into an offset value.  Note that this functions only
+ * allows for a base-10 length.  This function is similar to atoi()
+ * and thus there is no error checking.  */
+gpgme_off_t
+_gpgme_string_to_off (const char *string)
+{
+  gpgme_off_t value = 0;
+
+  while (*string == ' ' || *string == '\t')
+    string++;
+  for (; *string >= '0' && *string <= '9'; string++)
+    {
+      value *= 10;
+      value += atoi_1 (string);
+    }
+  return value;
+}
+
+
 #ifdef HAVE_W32_SYSTEM
 static time_t
 _gpgme_timegm (struct tm *tm)