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Support for $ENV{VAR} syntax (lookup in the environment vars)

This commit is contained in:
Sebastien Barre 2001-08-18 12:52:19 -04:00
parent c151f30861
commit ce4f2718f2
2 changed files with 53 additions and 14 deletions
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1
Modules/FindDart.cmake
View File

@ -4,6 +4,7 @@
#
FIND_PATH(DART_ROOT README.INSTALL
$ENV{DART_ROOT}
${PROJECT_SOURCE_DIR}/Dart
/usr/share/Dart
"C:/Program Files/Dart"

66
Source/cmMakefile.cxx
View File

@ -837,6 +837,8 @@ void cmMakefile::ExpandVariablesInString(std::string& source,
{
// This method replaces ${VAR} and @VAR@ where VAR is looked up
// in the m_Definitions map, if not found in the map, nothing is expanded.
// It also supports the $ENV{VAR} syntax where VAR is looked up in
// the current environment variables.
// start by look for $ or @ in the string
std::string::size_type markerPos = source.find_first_of("$@");
@ -856,7 +858,7 @@ void cmMakefile::ExpandVariablesInString(std::string& source,
// and add it to the result
result += source.substr(currentPos, markerPos - currentPos);
char endVariableMarker; // what is the end of the variable @ or }
int markerStartSize = 1; // size of the start marker 1 or 2
int markerStartSize = 1; // size of the start marker 1 or 2 or 5
if(source[markerPos] == '$')
{
// ${var} case
@ -865,6 +867,14 @@ void cmMakefile::ExpandVariablesInString(std::string& source,
endVariableMarker = '}';
markerStartSize = 2;
}
// $ENV{var} case
else if(markerPos+4 < source.size() &&
source[markerPos+4] == '{' &&
!source.compare(markerPos+1, 3, "ENV"))
{
endVariableMarker = '}';
markerStartSize = 5;
}
else
{
// bogus $ with no { so add $ to result and move on
@ -878,7 +888,7 @@ void cmMakefile::ExpandVariablesInString(std::string& source,
// @VAR case
endVariableMarker = '@';
}
// if it was a valid variable (started with @ or ${ )
// if it was a valid variable (started with @ or ${ or $ENV{ )
if(endVariableMarker != ' ')
{
markerPos += markerStartSize; // move past marker
@ -894,7 +904,7 @@ void cmMakefile::ExpandVariablesInString(std::string& source,
}
else
{
result += "${";
result += (markerStartSize == 5 ? "$ENV{" : "${");
}
currentPos = markerPos;
}
@ -902,20 +912,41 @@ void cmMakefile::ExpandVariablesInString(std::string& source,
{
// good variable remove it
std::string var = source.substr(markerPos, endVariablePos - markerPos);
DefinitionMap::const_iterator pos = m_Definitions.find(var.c_str());
// if found add to result, if not, then it gets blanked
if(pos != m_Definitions.end())
bool found = false;
if (markerStartSize == 5) // $ENV{
{
if (escapeQuotes)
char *ptr = getenv(var.c_str());
if (ptr)
{
result += cmSystemTools::EscapeQuotes((*pos).second.c_str());
}
else
{
result += (*pos).second;
if (escapeQuotes)
{
result += cmSystemTools::EscapeQuotes(ptr);
}
else
{
result += ptr;
}
found = true;
}
}
else
{
DefinitionMap::const_iterator pos = m_Definitions.find(var.c_str());
if(pos != m_Definitions.end())
{
if (escapeQuotes)
{
result += cmSystemTools::EscapeQuotes((*pos).second.c_str());
}
else
{
result += (*pos).second;
}
found = true;
}
}
// if found add to result, if not, then it gets blanked
if (!found)
{
// if no definition is found then add the var back
if(endVariableMarker == '@')
@ -926,7 +957,7 @@ void cmMakefile::ExpandVariablesInString(std::string& source,
}
else
{
result += "${";
result += (markerStartSize == 5 ? "$ENV{" : "${");
result += var;
result += "}";
}
@ -944,11 +975,18 @@ void cmMakefile::ExpandVariablesInString(std::string& source,
void cmMakefile::RemoveVariablesInString(std::string& source) const
{
cmRegularExpression var("(\\${[A-Za-z_0-9]*})");
cmRegularExpression var2("(@[A-Za-z_0-9]*@)");
while (var.find(source))
{
source.erase(var.start(),var.end() - var.start());
}
cmRegularExpression varb("(\\$ENV{[A-Za-z_0-9]*})");
while (varb.find(source))
{
source.erase(varb.start(),varb.end() - varb.start());
}
cmRegularExpression var2("(@[A-Za-z_0-9]*@)");
while (var2.find(source))
{
source.erase(var2.start(),var2.end() - var2.start());