Implement parsing extensions

CMakeLists.txt

@@ -16,6 +16,7 @@ set(PROJECT_VERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_
 option(CMARK_TESTS "Build cmark tests and enable testing" ON)
 
 add_subdirectory(src)
+add_subdirectory(extensions)
 if(CMARK_TESTS)
   add_subdirectory(api_test)
 endif()

Makefile

@@ -1,4 +1,5 @@
 SRCDIR=src
+EXTDIR=extensions
 DATADIR=data
 BUILDDIR?=build
 GENERATOR?=Unix Makefiles
@@ -115,6 +116,19 @@ $(SRCDIR)/scanners.c: $(SRCDIR)/scanners.re
 		--encoding-policy substitute -o $@ $<
 	clang-format -style llvm -i $@
 
+# We include scanners.c in the repository, so this shouldn't
+# normally need to be generated.
+$(EXTDIR)/ext_scanners.c: $(EXTDIR)/ext_scanners.re
+	@case "$$(re2c -v)" in \
+	    *\ 0.13.*|*\ 0.14|*\ 0.14.1) \
+		echo "re2c >= 0.14.2 is required"; \
+		false; \
+		;; \
+	esac
+	re2c --case-insensitive -b -i --no-generation-date -8 \
+		--encoding-policy substitute -o $@ $<
+	clang-format -style llvm -i $@
+
 # We include entities.inc in the repository, so normally this
 # doesn't need to be regenerated:
 $(SRCDIR)/entities.inc: tools/make_entities_inc.py

api_test/CMakeLists.txt

@@ -8,7 +8,7 @@ include_directories(
   ${PROJECT_SOURCE_DIR}/src
   ${PROJECT_BINARY_DIR}/src
 )
-target_link_libraries(api_test libcmark)
+target_link_libraries(api_test libcmark ${CMAKE_DL_LIBS})
 
 # Compiler flags
 if(MSVC)

extensions/CMakeLists.txt

@@ -0,0 +1,32 @@
+cmake_minimum_required(VERSION 2.8)
+set(LIBRARY "cmarkextensions")
+set(LIBRARY_SOURCES
+    ${PROJECT_SOURCE_DIR}/src/buffer.c
+    ${PROJECT_SOURCE_DIR}/src/cmark_ctype.c
+    core-extensions.c
+    ext_scanners.c
+    ext_scanners.h
+   )
+
+include_directories(
+  ${PROJECT_SOURCE_DIR}/src
+  ${PROJECT_BINARY_DIR}/src
+)
+
+# We make LIB_INSTALL_DIR configurable rather than
+# hard-coding lib, because on some OSes different locations
+# are used for different architectures (e.g. /usr/lib64 on
+# 64-bit Fedora).
+if(NOT LIB_INSTALL_DIR)
+  set(LIB_INSTALL_DIR "lib" CACHE STRING
+  "Set the installation directory for libraries." FORCE)
+endif(NOT LIB_INSTALL_DIR)
+
+include_directories(. ${CMAKE_CURRENT_BINARY_DIR})
+
+set(CMAKE_C_FLAGS_PROFILE "${CMAKE_C_FLAGS_RELEASE} -pg")
+set(CMAKE_LINKER_PROFILE "${CMAKE_LINKER_FLAGS_RELEASE} -pg")
+
+add_library(${LIBRARY} SHARED ${LIBRARY_SOURCES})
+
+target_link_libraries(cmarkextensions libcmark)