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cmSystemTools: Factor out helpers from FindCMakeResources

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Factor out helpers to:

- Find our own executable
- Find resources in the install tree or the build tree
This commit is contained in:
Brad King
2024-11-09 09:08:54 -05:00
parent b91ec8c48f
commit 46ac308249
1 changed files with 43 additions and 27 deletions
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70
Source/cmSystemTools.cxx
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@@ -2687,9 +2687,8 @@ bool IsCMakeAppBundleExe(std::string const& exe)
return cmHasLiteralSuffix(cmSystemTools::LowerCase(exe), "/macos/cmake");
}
#endif
}
void cmSystemTools::FindCMakeResources(const char* argv0)
std::string FindOwnExecutable(const char* argv0)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
static_cast<void>(argv0);
@@ -2738,10 +2737,12 @@ void cmSystemTools::FindCMakeResources(const char* argv0)
}
exe = cmSystemTools::GetRealPath(exe);
#endif
return exe;
}
#ifndef CMAKE_BOOTSTRAP
// Find resources relative to our own executable.
std::string exe_dir = cmSystemTools::GetFilenamePath(exe);
bool found = false;
bool FindCMakeResourcesInInstallTree(std::string const& exe_dir)
{
// Install tree has
// - "<prefix><CMAKE_BIN_DIR>/cmake"
// - "<prefix><CMAKE_DATA_DIR>"
@@ -2759,35 +2760,50 @@ void cmSystemTools::FindCMakeResources(const char* argv0)
cmStrCat(prefix, CMAKE_DOC_DIR "/html/index.html"))) {
cmSystemToolsHTMLDoc = cmStrCat(prefix, CMAKE_DOC_DIR "/html");
}
found = true;
return true;
}
}
return false;
}
if (!found) {
// Build tree has "<build>/bin[/<config>]/cmake" and
// "<build>/CMakeFiles/CMakeSourceDir.txt".
std::string dir = cmSystemTools::GetFilenamePath(exe_dir);
std::string src_dir_txt = cmStrCat(dir, "/CMakeFiles/CMakeSourceDir.txt");
cmsys::ifstream fin(src_dir_txt.c_str());
std::string src_dir;
if (fin && cmSystemTools::GetLineFromStream(fin, src_dir) &&
void FindCMakeResourcesInBuildTree(std::string const& exe_dir)
{
// Build tree has "<build>/bin[/<config>]/cmake" and
// "<build>/CMakeFiles/CMakeSourceDir.txt".
std::string dir = cmSystemTools::GetFilenamePath(exe_dir);
std::string src_dir_txt = cmStrCat(dir, "/CMakeFiles/CMakeSourceDir.txt");
cmsys::ifstream fin(src_dir_txt.c_str());
std::string src_dir;
if (fin && cmSystemTools::GetLineFromStream(fin, src_dir) &&
cmSystemTools::FileIsDirectory(src_dir)) {
cmSystemToolsCMakeRoot = src_dir;
} else {
dir = cmSystemTools::GetFilenamePath(dir);
src_dir_txt = cmStrCat(dir, "/CMakeFiles/CMakeSourceDir.txt");
cmsys::ifstream fin2(src_dir_txt.c_str());
if (fin2 && cmSystemTools::GetLineFromStream(fin2, src_dir) &&
cmSystemTools::FileIsDirectory(src_dir)) {
cmSystemToolsCMakeRoot = src_dir;
} else {
dir = cmSystemTools::GetFilenamePath(dir);
src_dir_txt = cmStrCat(dir, "/CMakeFiles/CMakeSourceDir.txt");
cmsys::ifstream fin2(src_dir_txt.c_str());
if (fin2 && cmSystemTools::GetLineFromStream(fin2, src_dir) &&
cmSystemTools::FileIsDirectory(src_dir)) {
cmSystemToolsCMakeRoot = src_dir;
}
}
if (!cmSystemToolsCMakeRoot.empty() && cmSystemToolsHTMLDoc.empty() &&
cmSystemTools::FileExists(
cmStrCat(dir, "/Utilities/Sphinx/html/index.html"))) {
cmSystemToolsHTMLDoc = cmStrCat(dir, "/Utilities/Sphinx/html");
}
}
if (!cmSystemToolsCMakeRoot.empty() && cmSystemToolsHTMLDoc.empty() &&
cmSystemTools::FileExists(
cmStrCat(dir, "/Utilities/Sphinx/html/index.html"))) {
cmSystemToolsHTMLDoc = cmStrCat(dir, "/Utilities/Sphinx/html");
}
}
#endif
}
void cmSystemTools::FindCMakeResources(const char* argv0)
{
std::string exe = FindOwnExecutable(argv0);
#ifndef CMAKE_BOOTSTRAP
// Find resources relative to our own executable.
std::string exe_dir = cmSystemTools::GetFilenamePath(exe);
if (!FindCMakeResourcesInInstallTree(exe_dir)) {
FindCMakeResourcesInBuildTree(exe_dir);
}
cmSystemToolsCMakeCommand =
cmStrCat(exe_dir, "/cmake", cmSystemTools::GetExecutableExtension());
#else