Add QPDF::numWarnings

ChangeLog

@@ -1,3 +1,8 @@
+2021-03-01  Jay Berkenbilt  <ejb@ql.org>
+
+	* Add QPDF::numWarnings() -- useful to tell whether any warnings
+	were issued by a specific bit of code.
+
 2021-02-26  Jay Berkenbilt  <ejb@ql.org>
 
 	* Bug fix: QPDFFormFieldObjectHelper was mis-handling /DA, /Q, and

include/qpdf/QPDF.hh

@@ -236,6 +236,11 @@ class QPDF
     QPDF_DLL
     bool anyWarnings() const;
 
+    // Indicate the number of warnings that have been issued so far.
+    // Does not clear the list of warnings.
+    QPDF_DLL
+    size_t numWarnings() const;
+
     // Return an application-scoped unique ID for this QPDF object.
     // This is not a globally unique ID. It is constructing using a
     // timestamp and a random number and is intended to be unique

libqpdf/QPDF.cc

@@ -366,6 +366,12 @@ QPDF::anyWarnings() const
     return ! this->m->warnings.empty();
 }
 
+size_t
+QPDF::numWarnings() const
+{
+    return this->m->warnings.size();
+}
+
 bool
 QPDF::findHeader()
 {