file: `STRINGS` + `REGEX` store match results

Signed-off-by: Cristian Le <cristian.le@mpsd.mpg.de>

13 files changed, 62 insertions, 0 deletions

diff --git a/Tests/RunCMake/CMakeLists.txt b/Tests/RunCMake/CMakeLists.txt
index a4e4800..7f58ceb 100644
--- a/Tests/RunCMake/CMakeLists.txt
+++ b/Tests/RunCMake/CMakeLists.txt
@@ -538,6 +538,7 @@ foreach(var
 endforeach()
 add_RunCMake_test(file-DOWNLOAD)
 add_RunCMake_test(file-RPATH -DCMAKE_SYSTEM_NAME=${CMAKE_SYSTEM_NAME})
+add_RunCMake_test(file-STRINGS)
 add_RunCMake_test(find_file -DMINGW=${MINGW})
 add_RunCMake_test(find_library -DMINGW=${MINGW} -DCYGWIN=${CYGWIN} -DMSYS=${MSYS} -DMSVC=${MSVC})
 add_RunCMake_test(find_package -DMINGW=${MINGW} -DMSYS=${MSYS})
diff --git a/Tests/RunCMake/CommandLine/trace-try_compile-redirect.cmake b/Tests/RunCMake/CommandLine/trace-try_compile-redirect.cmake
index 4107aa4..ef08627 100644
--- a/Tests/RunCMake/CommandLine/trace-try_compile-redirect.cmake
+++ b/Tests/RunCMake/CommandLine/trace-try_compile-redirect.cmake
@@ -1,2 +1,3 @@
 cmake_policy(VERSION 3.24)
+cmake_policy(SET CMP0159 NEW)
 enable_language(C)
diff --git a/Tests/RunCMake/file-STRINGS/CMP0159-Common.cmake b/Tests/RunCMake/file-STRINGS/CMP0159-Common.cmake
new file mode 100644
index 0000000..3608882
--- /dev/null
+++ b/Tests/RunCMake/file-STRINGS/CMP0159-Common.cmake
@@ -0,0 +1,12 @@
+function (output_results msg)
+  message(STATUS "results from: ${msg}")
+  message(STATUS "CMAKE_MATCH_0: -->${CMAKE_MATCH_0}<--")
+  message(STATUS "CMAKE_MATCH_1: -->${CMAKE_MATCH_1}<--")
+  message(STATUS "CMAKE_MATCH_2: -->${CMAKE_MATCH_2}<--")
+  message(STATUS "CMAKE_MATCH_COUNT: -->${CMAKE_MATCH_COUNT}<--")
+endfunction ()
+
+# Populate `CMAKE_MATCH_<n>` with some initial value
+string(REGEX MATCH "(.*):" _ "Initial-value:")
+file(STRINGS CMP0159.txt _ REGEX "(.*): (.*)")
+output_results(CMP0159)
diff --git a/Tests/RunCMake/file-STRINGS/CMP0159-NEW-stdout.txt b/Tests/RunCMake/file-STRINGS/CMP0159-NEW-stdout.txt
new file mode 100644
index 0000000..f163622
--- /dev/null
+++ b/Tests/RunCMake/file-STRINGS/CMP0159-NEW-stdout.txt
@@ -0,0 +1,5 @@
+-- results from: CMP0159
+-- CMAKE_MATCH_0: -->real-value: 1<--
+-- CMAKE_MATCH_1: -->real-value<--
+-- CMAKE_MATCH_2: -->1<--
+-- CMAKE_MATCH_COUNT: -->2<--
diff --git a/Tests/RunCMake/file-STRINGS/CMP0159-NEW.cmake b/Tests/RunCMake/file-STRINGS/CMP0159-NEW.cmake
new file mode 100644
index 0000000..8617561
--- /dev/null
+++ b/Tests/RunCMake/file-STRINGS/CMP0159-NEW.cmake
@@ -0,0 +1,4 @@
+
+cmake_policy(SET CMP0159 NEW)
+
+include(CMP0159-Common.cmake)
diff --git a/Tests/RunCMake/file-STRINGS/CMP0159-OLD-stdout.txt b/Tests/RunCMake/file-STRINGS/CMP0159-OLD-stdout.txt
new file mode 100644
index 0000000..16ee678
--- /dev/null
+++ b/Tests/RunCMake/file-STRINGS/CMP0159-OLD-stdout.txt
@@ -0,0 +1,5 @@
+-- results from: CMP0159
+-- CMAKE_MATCH_0: -->Initial-value:<--
+-- CMAKE_MATCH_1: -->Initial-value<--
+-- CMAKE_MATCH_2: --><--
+-- CMAKE_MATCH_COUNT: -->1<--
diff --git a/Tests/RunCMake/file-STRINGS/CMP0159-OLD.cmake b/Tests/RunCMake/file-STRINGS/CMP0159-OLD.cmake
new file mode 100644
index 0000000..4137aea
--- /dev/null
+++ b/Tests/RunCMake/file-STRINGS/CMP0159-OLD.cmake
@@ -0,0 +1,4 @@
+
+cmake_policy(SET CMP0159 OLD)
+
+include(CMP0159-Common.cmake)
diff --git a/Tests/RunCMake/file-STRINGS/CMP0159-WARN-stderr.txt b/Tests/RunCMake/file-STRINGS/CMP0159-WARN-stderr.txt
new file mode 100644
index 0000000..e82486c
--- /dev/null
+++ b/Tests/RunCMake/file-STRINGS/CMP0159-WARN-stderr.txt
@@ -0,0 +1,10 @@
+CMake Warning \(dev\) at CMP0159-Common.cmake:[0-9]+ \(file\):
+  Policy CMP0159 is not set: file\(STRINGS\) with REGEX updates
+  CMAKE_MATCH_<n>\.  Run "cmake --help-policy CMP0159" for policy details\.
+  Use the cmake_policy command to set the policy and suppress this warning\.
+
+  For compatibility, CMake is leaving CMAKE_MATCH_<n> unchanged\.
+Call Stack \(most recent call first\):
+  CMP0159-WARN.cmake:[0-9]+ \(include\)
+  CMakeLists.txt:[0-9]+ \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
diff --git a/Tests/RunCMake/file-STRINGS/CMP0159-WARN-stdout.txt b/Tests/RunCMake/file-STRINGS/CMP0159-WARN-stdout.txt
new file mode 100644
index 0000000..16ee678
--- /dev/null
+++ b/Tests/RunCMake/file-STRINGS/CMP0159-WARN-stdout.txt
@@ -0,0 +1,5 @@
+-- results from: CMP0159
+-- CMAKE_MATCH_0: -->Initial-value:<--
+-- CMAKE_MATCH_1: -->Initial-value<--
+-- CMAKE_MATCH_2: --><--
+-- CMAKE_MATCH_COUNT: -->1<--
diff --git a/Tests/RunCMake/file-STRINGS/CMP0159-WARN.cmake b/Tests/RunCMake/file-STRINGS/CMP0159-WARN.cmake
new file mode 100644
index 0000000..1feab4b
--- /dev/null
+++ b/Tests/RunCMake/file-STRINGS/CMP0159-WARN.cmake
@@ -0,0 +1,4 @@
+
+set(CMAKE_POLICY_WARNING_CMP0159 TRUE)
+
+include(CMP0159-Common.cmake)
diff --git a/Tests/RunCMake/file-STRINGS/CMP0159.txt b/Tests/RunCMake/file-STRINGS/CMP0159.txt
new file mode 100644
index 0000000..4b31aed
--- /dev/null
+++ b/Tests/RunCMake/file-STRINGS/CMP0159.txt
@@ -0,0 +1,3 @@
+overwritten-value: -1
+real-value: 1
+ignored = -2
diff --git a/Tests/RunCMake/file-STRINGS/CMakeLists.txt b/Tests/RunCMake/file-STRINGS/CMakeLists.txt
new file mode 100644
index 0000000..9a66cde
--- /dev/null
+++ b/Tests/RunCMake/file-STRINGS/CMakeLists.txt
@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 3.13)
+project(${RunCMake_TEST} NONE)
+include(${RunCMake_TEST}.cmake)
diff --git a/Tests/RunCMake/file-STRINGS/RunCMakeTest.cmake b/Tests/RunCMake/file-STRINGS/RunCMakeTest.cmake
new file mode 100644
index 0000000..a22b3d8
--- /dev/null
+++ b/Tests/RunCMake/file-STRINGS/RunCMakeTest.cmake
@@ -0,0 +1,5 @@
+include(RunCMake)
+
+run_cmake(CMP0159-WARN)
+run_cmake(CMP0159-OLD)
+run_cmake(CMP0159-NEW)