ExternalData: Add support for SHA 1 and 2 hash algorithms

Update the Module.ExternalData and RunCMake.ExternalData tests to cover
some of them.

Modules/ExternalData.cmake

@@ -49,6 +49,11 @@
 #    %(algo)     <ext>     Description
 #    -------     -----     -----------
 #    MD5         .md5      Message-Digest Algorithm 5, RFC 1321
+#    SHA1        .sha1     US Secure Hash Algorithm 1, RFC 3174
+#    SHA224      .sha224   US Secure Hash Algorithms, RFC 4634
+#    SHA256      .sha256   US Secure Hash Algorithms, RFC 4634
+#    SHA384      .sha384   US Secure Hash Algorithms, RFC 4634
+#    SHA512      .sha512   US Secure Hash Algorithms, RFC 4634
 # Note that the hashes are used only for unique data identification and
 # download verification.  This is not security software.
 #
@@ -261,8 +266,8 @@ endfunction()
 #-----------------------------------------------------------------------------
 # Private helper interface
 
-set(_ExternalData_REGEX_ALGO "MD5")
-set(_ExternalData_REGEX_EXT "md5")
+set(_ExternalData_REGEX_ALGO "MD5|SHA1|SHA224|SHA256|SHA384|SHA512")
+set(_ExternalData_REGEX_EXT "md5|sha1|sha224|sha256|sha384|sha512")
 set(_ExternalData_SELF "${CMAKE_CURRENT_LIST_FILE}")
 get_filename_component(_ExternalData_SELF_DIR "${_ExternalData_SELF}" PATH)
 

Tests/Module/ExternalData/CMakeLists.txt

@@ -22,6 +22,7 @@ ExternalData_Add_Test(Data1
     -D SeriesBn=DATA{SeriesBn_1.dat,:}
     -D SeriesCn=DATA{SeriesCn.1.dat,:}
     -D SeriesDn=DATA{SeriesDn-1.dat,:}
+    -D SeriesMixed=DATA{SeriesMixed.1.dat,:}
     -D Paired=DATA{PairedA.dat,PairedB.dat}
     -D Meta=DATA{MetaTop.dat,REGEX:Meta[ABC].dat}
     -D Directory=DATA{Directory/,A.dat,REGEX:[BC].dat}

Tests/Module/ExternalData/Data1Check.cmake

@@ -26,6 +26,12 @@ foreach(s A B C D)
     endif()
   endforeach()
 endforeach()
+foreach(n .1 .2 .3 .4)
+  string(REGEX REPLACE "\\.1\\.dat$" "${n}.dat" file "${SeriesMixed}")
+  if(NOT EXISTS "${file}")
+    message(SEND_ERROR "Input file:\n  ${file}\ndoes not exist!")
+  endif()
+endforeach()
 foreach(n A B)
   string(REGEX REPLACE "A\\.dat$" "${n}.dat" file "${Paired}")
   if(NOT EXISTS "${file}")

Tests/Module/ExternalData/MD5/ce38ea6c3c1e00fa6405dd64b8bf6da0

@@ -0,0 +1 @@
+SeriesMixed.1

Tests/Module/ExternalData/SHA1/.gitattributes

@@ -0,0 +1 @@
+*               -crlf

Tests/Module/ExternalData/SHA1/2af59a7022024974f3b8521b7ed8137c996a79f1

@@ -0,0 +1 @@
+SeriesMixed.2

Tests/Module/ExternalData/SHA224/.gitattributes

@@ -0,0 +1 @@
+*               -crlf

Tests/Module/ExternalData/SHA224/3b679da7908562fe1cc28db47ffb89bae025f4551dceb343a5869174

@@ -0,0 +1 @@
+SeriesMixed.3

Tests/Module/ExternalData/SHA256/.gitattributes

@@ -0,0 +1 @@
+*               -crlf

Tests/Module/ExternalData/SHA256/969171a0dd70d49ce096bd3e8178c7e26c711c9b20dbcaa3853d869d3871f133

@@ -0,0 +1 @@
+SeriesMixed.4

Tests/Module/ExternalData/SeriesMixed.1.dat.md5

@@ -0,0 +1 @@
+ce38ea6c3c1e00fa6405dd64b8bf6da0

Tests/Module/ExternalData/SeriesMixed.2.dat.sha1

@@ -0,0 +1 @@
+2af59a7022024974f3b8521b7ed8137c996a79f1

Tests/Module/ExternalData/SeriesMixed.3.dat.sha224

@@ -0,0 +1 @@
+3b679da7908562fe1cc28db47ffb89bae025f4551dceb343a5869174

Tests/Module/ExternalData/SeriesMixed.4.dat.sha256

@@ -0,0 +1 @@
+969171a0dd70d49ce096bd3e8178c7e26c711c9b20dbcaa3853d869d3871f133

Tests/RunCMake/ExternalData/LinkContentSHA1-stdout.txt

@@ -0,0 +1,3 @@
+-- Linked ToLink.txt.sha1 to ExternalData SHA1/114ee5dda251457fd2df63bec91d3b8db43aba58
+-- Raw data correctly transformed to content link!
+-- Staged content exists!

Tests/RunCMake/ExternalData/LinkContentSHA1.cmake

@@ -0,0 +1,22 @@
+include(ExternalData)
+set(ExternalData_LINK_CONTENT SHA1)
+set(ExternalData_SOURCE_ROOT ${CMAKE_CURRENT_BINARY_DIR})
+set(ExternalData_BINARY_ROOT ${CMAKE_CURRENT_BINARY_DIR}/ExternalData)
+set(input ${CMAKE_CURRENT_BINARY_DIR}/ToLink.txt)
+set(output ${CMAKE_CURRENT_BINARY_DIR}/ExternalData/ToLink.txt)
+set(staged "${CMAKE_CURRENT_BINARY_DIR}/.ExternalData_SHA1_114ee5dda251457fd2df63bec91d3b8db43aba58")
+file(REMOVE ${staged})
+file(REMOVE ${input}.sha1)
+file(WRITE ${input} "To be transformed into a content link.")
+ExternalData_Expand_Arguments(Data args DATA{${input}})
+if("x${args}" STREQUAL "x${output}")
+  message(STATUS "Raw data correctly transformed to content link!")
+else()
+  message(FATAL_ERROR "Data reference transformed to:\n  ${args}\n"
+    "but we expected:\n  ${output}")
+endif()
+if(EXISTS "${staged}")
+  message(STATUS "Staged content exists!")
+else()
+  message(FATAL_ERROR "Staged content missing!")
+endif()

Tests/RunCMake/ExternalData/RunCMakeTest.cmake

@@ -12,6 +12,7 @@ run_cmake(Directory3)
 run_cmake(Directory4)
 run_cmake(Directory5)
 run_cmake(LinkContentMD5)
+run_cmake(LinkContentSHA1)
 run_cmake(MissingData)
 run_cmake(NoLinkInSource)
 run_cmake(NoURLTemplates)