ENH: add atonly support to cmCommandArgumentParserHelper.cxx and remove old non-yacc parser code from cmMakefile.cxx
This commit is contained in:
Bill Hoffman
parent
0e1ae13f7c
commit
0e95a190bc
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@ -27,7 +27,7 @@ cmCommandArgumentParserHelper::cmCommandArgumentParserHelper()
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{
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this->FileLine = -1;
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this->FileName = 0;
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this->RemoveEmpty = true;
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this->EmptyVariable[0] = 0;
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strcpy(this->DCURLYVariable, "${");
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strcpy(this->RCURLYVariable, "}");
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@ -38,6 +38,7 @@ cmCommandArgumentParserHelper::cmCommandArgumentParserHelper()
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this->NoEscapeMode = false;
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this->ReplaceAtSyntax = false;
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this->AtOnly = false;
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}
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@ -71,6 +72,18 @@ char* cmCommandArgumentParserHelper::ExpandSpecialVariable(const char* key,
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{
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return this->ExpandVariable(var);
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}
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if(this->AtOnly)
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{
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std::string ref = "$";
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ref += key;
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ref += "{";
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if(var)
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{
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ref += var;
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}
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ref += "}";
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return this->AddString(ref.c_str());
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}
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if ( strcmp(key, "ENV") == 0 )
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{
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char *ptr = getenv(var);
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@ -92,8 +105,21 @@ char* cmCommandArgumentParserHelper::ExpandSpecialVariable(const char* key,
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return 0;
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}
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char* cmCommandArgumentParserHelper::ExpandVariable(const char* var)
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char* cmCommandArgumentParserHelper::ExpandVariable(const char* var,
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bool doingAt)
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{
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// if we are in AtOnly mode, and we are not expanding an @ variable
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// then put back the ${var} unexpanded
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if(!doingAt && this->AtOnly)
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{
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std::string ref = "${";
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if(var)
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{
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ref += var;
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}
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ref += "}";
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return this->AddString(ref.c_str());
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}
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if(!var)
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{
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return 0;
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@ -109,6 +135,10 @@ char* cmCommandArgumentParserHelper::ExpandVariable(const char* var)
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return this->AddString(ostr.str().c_str());
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}
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const char* value = this->Makefile->GetDefinition(var);
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if(!value && !this->RemoveEmpty)
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{
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return 0;
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}
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if (this->EscapeQuotes && value)
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{
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return this->AddString(cmSystemTools::EscapeQuotes(value).c_str());
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@ -120,15 +150,28 @@ char* cmCommandArgumentParserHelper::ExpandVariableForAt(const char* var)
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{
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if(this->ReplaceAtSyntax)
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{
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return this->ExpandVariable(var);
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}
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else
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// try to expand the variable
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char* ret = this->ExpandVariable(var, true);
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// if the return was 0 and we want to replace empty strings
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// then return an empty string
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if(!ret && this->RemoveEmpty)
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{
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return this->AddString(ret);
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}
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// if the ret was not 0, then return it
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if(ret)
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{
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return ret;
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}
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}
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// at this point we want to put it back because of one of these cases:
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// - this->ReplaceAtSyntax is false
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// - this->ReplaceAtSyntax is true, but this->RemoveEmpty is false,
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// and the variable was not defined
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std::string ref = "@";
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ref += var;
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ref += "@";
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return this->AddString(ref.c_str());
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}
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}
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char* cmCommandArgumentParserHelper::CombineUnions(char* in1, char* in2)
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@ -58,7 +58,7 @@ public:
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char* CombineUnions(char* in1, char* in2);
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char* ExpandSpecialVariable(const char* key, const char* var);
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char* ExpandVariable(const char* var);
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char* ExpandVariable(const char* var, bool doingAt=false);
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char* ExpandVariableForAt(const char* var);
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void SetResult(const char* value);
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@ -70,6 +70,8 @@ public:
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void SetEscapeQuotes(bool b) { this->EscapeQuotes = b; }
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void SetNoEscapeMode(bool b) { this->NoEscapeMode = b; }
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void SetReplaceAtSyntax(bool b) { this->ReplaceAtSyntax = b; }
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void SetRemoveEmpty(bool b) { this->RemoveEmpty = b; }
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void SetAtOnly(bool b) { this->AtOnly = b; }
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const char* GetError() { return this->ErrorString.c_str(); }
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char EmptyVariable[1];
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@ -104,6 +106,8 @@ private:
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std::string ErrorString;
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bool NoEscapeMode;
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bool ReplaceAtSyntax;
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bool RemoveEmpty;
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bool AtOnly;
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};
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#endif
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@ -1684,20 +1684,18 @@ const char *cmMakefile::ExpandVariablesInString(std::string& source,
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// It also supports the $ENV{VAR} syntax where VAR is looked up in
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// the current environment variables.
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bool notParsed = true;
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if ( !atOnly )
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{
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cmCommandArgumentParserHelper parser;
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parser.SetMakefile(this);
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parser.SetLineFile(line, filename);
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parser.SetEscapeQuotes(escapeQuotes);
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parser.SetNoEscapeMode(noEscapes);
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parser.SetReplaceAtSyntax(replaceAt);
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parser.SetRemoveEmpty(removeEmpty);
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parser.SetAtOnly(atOnly);
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int res = parser.ParseString(source.c_str(), 0);
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if ( res )
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{
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source = parser.GetResult();
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notParsed = false;
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}
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else
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{
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@ -1726,173 +1724,6 @@ const char *cmMakefile::ExpandVariablesInString(std::string& source,
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cmSystemTools::Message(error.str().c_str());
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}
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}
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}
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if ( notParsed )
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{
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// start by look for $ or @ in the string
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std::string::size_type markerPos;
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if(atOnly)
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{
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markerPos = source.find_first_of("@");
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}
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else
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{
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markerPos = source.find_first_of("$@");
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}
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// if not found, or found as the last character, then leave quickly as
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// nothing needs to be expanded
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if((markerPos == std::string::npos) || (markerPos >= source.size()-1))
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{
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return source.c_str();
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}
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// current position
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std::string::size_type currentPos =0; // start at 0
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std::string result; // string with replacements
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// go until the the end of the string
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while((markerPos != std::string::npos) && (markerPos < source.size()-1))
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{
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// grab string from currentPos to the start of the variable
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// and add it to the result
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result += source.substr(currentPos, markerPos - currentPos);
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char endVariableMarker; // what is the end of the variable @ or }
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int markerStartSize = 1; // size of the start marker 1 or 2 or 5
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if(!atOnly && source[markerPos] == '$')
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{
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// ${var} case
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if(source[markerPos+1] == '{')
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{
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endVariableMarker = '}';
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markerStartSize = 2;
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}
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// $ENV{var} case
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else if(markerPos+4 < source.size() &&
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source[markerPos+4] == '{' &&
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!source.substr(markerPos+1, 3).compare("ENV"))
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{
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endVariableMarker = '}';
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markerStartSize = 5;
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}
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else
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{
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// bogus $ with no { so add $ to result and move on
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result += '$'; // add bogus $ back into string
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currentPos = markerPos+1; // move on
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// set end var to space so we can tell bogus
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endVariableMarker = ' ';
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}
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}
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else
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{
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// @VAR case
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endVariableMarker = '@';
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}
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// if it was a valid variable (started with @ or ${ or $ENV{ )
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if(endVariableMarker != ' ')
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{
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markerPos += markerStartSize; // move past marker
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// find the end variable marker starting at the markerPos
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// make sure it is a valid variable between
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std::string::size_type endVariablePos =
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source.find_first_not_of(
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"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_",
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markerPos);
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if(endVariablePos != std::string::npos &&
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source[endVariablePos] != endVariableMarker)
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{
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endVariablePos = std::string::npos;
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}
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if(endVariablePos == std::string::npos)
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{
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// no end marker found so add the bogus start
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if(endVariableMarker == '@')
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{
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result += '@';
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}
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else
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{
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result += (markerStartSize == 5 ? "$ENV{" : "${");
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}
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currentPos = markerPos;
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}
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else
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{
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// good variable remove it
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std::string var =
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source.substr(markerPos, endVariablePos - markerPos);
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bool found = false;
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if (markerStartSize == 5) // $ENV{
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{
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char *ptr = getenv(var.c_str());
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if (ptr)
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{
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if (escapeQuotes)
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{
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result += cmSystemTools::EscapeQuotes(ptr);
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}
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else
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{
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result += ptr;
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}
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found = true;
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}
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}
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else
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{
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const char* lookup = this->GetDefinition(var.c_str());
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if(lookup)
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{
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if (escapeQuotes)
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{
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result += cmSystemTools::EscapeQuotes(lookup);
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}
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else
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{
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result += lookup;
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}
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found = true;
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}
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else if(filename && (var == "CMAKE_CURRENT_LIST_FILE"))
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{
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result += filename;
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found = true;
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}
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else if(line >= 0 && (var == "CMAKE_CURRENT_LIST_LINE"))
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{
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cmOStringStream ostr;
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ostr << line;
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result += ostr.str();
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found = true;
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}
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}
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// if found add to result, if not, then it gets blanked
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if (!found)
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{
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// if no definition is found then add the var back
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if(!removeEmpty && endVariableMarker == '@')
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{
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result += "@";
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result += var;
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result += "@";
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}
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}
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// lookup var, and replace it
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currentPos = endVariablePos+1;
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}
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}
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if(atOnly)
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{
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markerPos = source.find_first_of("@", currentPos);
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}
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else
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{
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markerPos = source.find_first_of("$@", currentPos);
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}
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}
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result += source.substr(currentPos); // pick up the rest of the string
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source = result;
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}
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return source.c_str();
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}
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