From 074608dec15e10a61decdcc017cc1927b99b8dc3 Mon Sep 17 00:00:00 2001
From: Konstantinos Sideris <sideris.konstantin@gmail.com>
Date: Tue, 11 Sep 2018 14:56:09 +0300
Subject: [PATCH] Switch to libcmark

---
 CMakeLists.txt         |  3 ++-
 cmake/Findcmark.cmake  | 39 +++++++++++++++++++++++++++++++++++++++
 deps/CMakeLists.txt    | 11 -----------
 deps/cmake/Maddy.cmake | 20 --------------------
 src/Utils.cpp          | 15 ++++++++++-----
 5 files changed, 51 insertions(+), 37 deletions(-)
 create mode 100644 cmake/Findcmark.cmake
 delete mode 100644 deps/cmake/Maddy.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 741f4ae..05436a3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -250,7 +250,7 @@ find_package(OpenSSL REQUIRED)
 find_package(MatrixClient 0.1.0 REQUIRED)
 find_package(Olm 2 REQUIRED)
 find_package(spdlog 1.0.0 CONFIG REQUIRED)
-find_package(maddy 1.0.0 CONFIG REQUIRED)
+find_package(cmark REQUIRED)
 
 if(NOT LMDBXX_INCLUDE_DIR)
     find_path(LMDBXX_INCLUDE_DIR
@@ -362,6 +362,7 @@ set(TRANSLATION_DEPS ${LANG_QRC} ${QRC} ${QM_SRC})
 set(COMMON_LIBS
     MatrixClient::MatrixClient
     ${Boost_LIBRARIES}
+    cmark::cmark
     Qt5::Widgets
     Qt5::Svg
     Qt5::Concurrent
diff --git a/cmake/Findcmark.cmake b/cmake/Findcmark.cmake
new file mode 100644
index 0000000..fd7d062
--- /dev/null
+++ b/cmake/Findcmark.cmake
@@ -0,0 +1,39 @@
+#
+# CMake module to search for the cmark library
+#
+
+find_path(CMARK_INCLUDE_DIR
+          NAMES cmark.h
+          PATHS /usr/include
+                /usr/local/include
+                $ENV{LIB_DIR}/include
+                $ENV{LIB_DIR}/include/cmark)
+
+find_library(CMARK_LIBRARY
+             NAMES cmark
+             PATHS /usr/lib /usr/local/lib $ENV{LIB_DIR}/lib)
+
+if(OLM_FOUND)
+  set(OLM_INCLUDE_DIRS ${CMARK_INCLUDE_DIR})
+
+  if(NOT OLM_LIBRARIES)
+    set(OLM_LIBRARIES ${CMARK_LIBRARY})
+  endif()
+endif()
+
+if(NOT TARGET cmark::cmark)
+  add_library(cmark::cmark UNKNOWN IMPORTED)
+  set_target_properties(cmark::cmark
+                        PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
+                                   ${CMARK_INCLUDE_DIR})
+  set_property(TARGET cmark::cmark APPEND
+               PROPERTY IMPORTED_LOCATION ${CMARK_LIBRARY})
+endif()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(cmark
+                                  DEFAULT_MSG
+                                  CMARK_INCLUDE_DIR
+                                  CMARK_LIBRARY)
+
+mark_as_advanced(CMARK_LIBRARY CMARK_INCLUDE_DIR)
diff --git a/deps/CMakeLists.txt b/deps/CMakeLists.txt
index 3160375..5df60d2 100644
--- a/deps/CMakeLists.txt
+++ b/deps/CMakeLists.txt
@@ -26,7 +26,6 @@ option(USE_BUNDLED_SPDLOG "Use the bundled version of spdlog." ${USE_BUNDLED})
 option(USE_BUNDLED_OLM "Use the bundled version of libolm." ${USE_BUNDLED})
 option(USE_BUNDLED_TWEENY "Use the bundled version of Tweeny." ${USE_BUNDLED})
 option(USE_BUNDLED_LMDBXX "Use the bundled version of lmdbxx." ${USE_BUNDLED})
-option(USE_BUNDLED_MADDY "Use the bundled version of maddy." ${USE_BUNDLED})
 option(USE_BUNDLED_MATRIX_CLIENT "Use the bundled version of mtxclient."
        ${USE_BUNDLED})
 
@@ -65,12 +64,6 @@ set(SPDLOG_URL https://github.com/gabime/spdlog/archive/v1.1.0.tar.gz)
 set(SPDLOG_HASH
     3dbcbfd8c07e25f5e0d662b194d3a7772ef214358c49ada23c044c4747ce8b19)
 
-set(
-  MADDY_URL
-  https://github.com/mujx/maddy/archive/d6b32013a580d40de57ac8b6650846abecbb071f.tar.gz
-  )
-set(MADDY_HASH c40df975420aa9f1549d9e528af84243f701b5264ed9c32d86b1cfc9306c15b8)
-
 set(JSON_HEADER_URL
     https://github.com/nlohmann/json/releases/download/v3.2.0/json.hpp)
 set(JSON_HEADER_HASH
@@ -87,10 +80,6 @@ if(USE_BUNDLED_SPDLOG)
   include(SpdLog)
 endif()
 
-if(USE_BUNDLED_MADDY)
-  include(Maddy)
-endif()
-
 if(USE_BUNDLED_OLM)
   include(Olm)
 endif()
diff --git a/deps/cmake/Maddy.cmake b/deps/cmake/Maddy.cmake
deleted file mode 100644
index 699d214..0000000
--- a/deps/cmake/Maddy.cmake
+++ /dev/null
@@ -1,20 +0,0 @@
-set(WINDOWS_FLAGS "")
-
-if(MSVC)
-    set(WINDOWS_FLAGS "-DCMAKE_GENERATOR_PLATFORM=x64")
-endif()
-
-ExternalProject_Add(
-   Maddy
-
-   URL ${MADDY_URL}
-   URL_HASH SHA256=${MADDY_HASH}
-
-   BUILD_IN_SOURCE 1
-   SOURCE_DIR ${DEPS_BUILD_DIR}/maddy
-   CONFIGURE_COMMAND ${CMAKE_COMMAND}
-        -DCMAKE_INSTALL_PREFIX=${DEPS_INSTALL_DIR}
-        ${DEPS_BUILD_DIR}/maddy
-        ${WINDOWS_FLAGS})
-
-list(APPEND THIRD_PARTY_DEPS Maddy)
diff --git a/src/Utils.cpp b/src/Utils.cpp
index 5d5508b..6ac675d 100644
--- a/src/Utils.cpp
+++ b/src/Utils.cpp
@@ -8,7 +8,7 @@
 #include <cmath>
 
 #include <boost/variant.hpp>
-#include <maddy/parser.h>
+#include <cmark.h>
 
 #include "Config.h"
 
@@ -333,16 +333,21 @@ utils::linkifyMessage(const QString &body)
 std::string
 utils::markdownToHtml(const std::string &text)
 {
-        std::stringstream markdownInput(text);
-        auto parser = std::make_shared<maddy::Parser>();
+        const char *tmp_buf = cmark_markdown_to_html(text.c_str(), text.size(), CMARK_OPT_DEFAULT);
 
-        return parser->Parse(markdownInput);
+        // Copy the null terminated output buffer.
+        std::string html(tmp_buf);
+
+        // The buffer is no longer needed.
+        free((char *)tmp_buf);
+
+        return html;
 }
 
 std::string
 utils::markdownToHtml(const QString &text)
 {
-        return markdownToHtml(text.toStdString());
+        return utils::markdownToHtml(text.toStdString());
 }
 
 std::string