Add create and create_or_throw factories for Compression_Algorithm and Decompression_Algorithm.

1 files changed, 32 insertions, 0 deletions

diff --git a/src/lib/compression/compression.h b/src/lib/compression/compression.h
index 2ebde3f2f..403b335e1 100644
--- a/src/lib/compression/compression.h
+++ b/src/lib/compression/compression.h
@@ -20,6 +20,22 @@ class BOTAN_PUBLIC_API(2,0) Compression_Algorithm
    {
    public:
       /**
+      * Create an instance based on a name, or return null if the
+      * algo/provider combination cannot be found. If provider is
+      * empty then best available is chosen.
+      */
+      static std::unique_ptr<Compression_Algorithm>
+         create(const std::string& algo_spec);
+
+      /**
+      * Create an instance based on a name
+      * @param algo_spec algorithm name
+      * Throws Lookup_Error if not not found.
+      */
+      static std::unique_ptr<Compression_Algorithm>
+         create_or_throw(const std::string& algo_spec);
+
+      /**
       * Begin compressing. Most compression algorithms offer a tunable
       * time/compression tradeoff parameter generally represented by
       * an integer in the range of 1 to 9.
@@ -66,6 +82,22 @@ class BOTAN_PUBLIC_API(2,0) Decompression_Algorithm
    {
    public:
       /**
+      * Create an instance based on a name, or return null if the
+      * algo/provider combination cannot be found. If provider is
+      * empty then best available is chosen.
+      */
+      static std::unique_ptr<Decompression_Algorithm>
+         create(const std::string& algo_spec);
+
+      /**
+      * Create an instance based on a name
+      * @param algo_spec algorithm name
+      * Throws Lookup_Error if not not found.
+      */
+      static std::unique_ptr<Decompression_Algorithm>
+         create_or_throw(const std::string& algo_spec);
+
+      /**
       * Begin decompressing.
       * Decompression does not support levels, as compression does.
       */