354 lines
8.2 KiB
C++
354 lines
8.2 KiB
C++
/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
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see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the License for more information.
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============================================================================*/
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#include "cmCommandArgumentParserHelper.h"
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#include "cmSystemTools.h"
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#include "cmCommandArgumentLexer.h"
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#include "cmMakefile.h"
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int cmCommandArgument_yyparse( yyscan_t yyscanner );
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//
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cmCommandArgumentParserHelper::cmCommandArgumentParserHelper()
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{
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this->StrictMode = false;
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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, "${");
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strcpy(this->RCURLYVariable, "}");
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strcpy(this->ATVariable, "@");
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strcpy(this->DOLLARVariable, "$");
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strcpy(this->LCURLYVariable, "{");
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strcpy(this->BSLASHVariable, "\\");
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this->NoEscapeMode = false;
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this->ReplaceAtSyntax = false;
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}
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cmCommandArgumentParserHelper::~cmCommandArgumentParserHelper()
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{
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this->CleanupParser();
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}
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void cmCommandArgumentParserHelper::SetLineFile(long line, const char* file)
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{
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this->FileLine = line;
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this->FileName = file;
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}
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char* cmCommandArgumentParserHelper::AddString(const char* str)
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{
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if ( !str || !*str )
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{
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return this->EmptyVariable;
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}
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char* stVal = new char[strlen(str)+1];
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strcpy(stVal, str);
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this->Variables.push_back(stVal);
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return stVal;
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}
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char* cmCommandArgumentParserHelper::ExpandSpecialVariable(const char* key,
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const char* var)
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{
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if ( !key )
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{
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return this->ExpandVariable(var);
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}
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if(!var)
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{
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return this->EmptyVariable;
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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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if (ptr)
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{
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if (this->EscapeQuotes)
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{
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return this->AddString(cmSystemTools::EscapeQuotes(ptr).c_str());
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}
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else
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{
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return ptr;
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}
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}
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return this->EmptyVariable;
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}
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if ( strcmp(key, "CACHE") == 0 )
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{
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if(const char* c = this->Makefile->GetCacheManager()->GetCacheValue(var))
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{
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if(this->EscapeQuotes)
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{
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return this->AddString(cmSystemTools::EscapeQuotes(c).c_str());
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}
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else
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{
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return this->AddString(c);
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}
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}
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return this->EmptyVariable;
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}
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cmOStringStream e;
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e << "Syntax $" << key << "{} is not supported. "
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<< "Only ${}, $ENV{}, and $CACHE{} are allowed.";
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this->SetError(e.str());
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return 0;
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}
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char* cmCommandArgumentParserHelper::ExpandVariable(const char* var)
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{
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if(!var)
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{
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return 0;
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}
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if(this->FileLine >= 0 && strcmp(var, "CMAKE_CURRENT_LIST_LINE") == 0)
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{
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cmOStringStream ostr;
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ostr << this->FileLine;
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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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// check to see if we need to print a warning
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// if strict mode is on and the variable has
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// not been "cleared"/initialized with a set(foo ) call
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if(this->StrictMode && !this->Makefile->VariableInitialized(var))
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{
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cmOStringStream msg;
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msg << this->FileName << ":" << this->FileLine << ":" <<
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" warning: uninitialized variable \'" << var << "\'";
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cmSystemTools::Message(msg.str().c_str());
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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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}
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return this->AddString(value);
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}
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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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// try to expand the variable
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char* ret = this->ExpandVariable(var);
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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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char* cmCommandArgumentParserHelper::CombineUnions(char* in1, char* in2)
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{
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if ( !in1 )
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{
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return in2;
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}
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else if ( !in2 )
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{
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return in1;
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}
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size_t len = strlen(in1) + strlen(in2) + 1;
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char* out = new char [ len ];
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strcpy(out, in1);
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strcat(out, in2);
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this->Variables.push_back(out);
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return out;
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}
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void cmCommandArgumentParserHelper::AllocateParserType
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(cmCommandArgumentParserHelper::ParserType* pt,const char* str, int len)
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{
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pt->str = 0;
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if ( len == 0 )
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{
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len = static_cast<int>(strlen(str));
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}
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if ( len == 0 )
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{
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return;
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}
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pt->str = new char[ len + 1 ];
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strncpy(pt->str, str, len);
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pt->str[len] = 0;
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this->Variables.push_back(pt->str);
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}
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bool cmCommandArgumentParserHelper::HandleEscapeSymbol
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(cmCommandArgumentParserHelper::ParserType* pt, char symbol)
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{
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switch ( symbol )
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{
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case '\\':
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case '"':
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case ' ':
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case '#':
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case '(':
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case ')':
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case '$':
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case '@':
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case '^':
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this->AllocateParserType(pt, &symbol, 1);
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break;
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case ';':
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this->AllocateParserType(pt, "\\;", 2);
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break;
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case 't':
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this->AllocateParserType(pt, "\t", 1);
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break;
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case 'n':
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this->AllocateParserType(pt, "\n", 1);
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break;
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case 'r':
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this->AllocateParserType(pt, "\r", 1);
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break;
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case '0':
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this->AllocateParserType(pt, "\0", 1);
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break;
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default:
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{
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cmOStringStream e;
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e << "Invalid escape sequence \\" << symbol;
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this->SetError(e.str());
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}
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return false;
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}
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return true;
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}
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void cmCommandArgument_SetupEscapes(yyscan_t yyscanner, bool noEscapes);
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int cmCommandArgumentParserHelper::ParseString(const char* str, int verb)
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{
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if ( !str)
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{
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return 0;
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}
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this->Verbose = verb;
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this->InputBuffer = str;
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this->InputBufferPos = 0;
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this->CurrentLine = 0;
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this->Result = "";
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yyscan_t yyscanner;
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cmCommandArgument_yylex_init(&yyscanner);
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cmCommandArgument_yyset_extra(this, yyscanner);
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cmCommandArgument_SetupEscapes(yyscanner, this->NoEscapeMode);
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int res = cmCommandArgument_yyparse(yyscanner);
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cmCommandArgument_yylex_destroy(yyscanner);
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if ( res != 0 )
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{
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return 0;
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}
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this->CleanupParser();
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if ( Verbose )
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{
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std::cerr << "Expanding [" << str << "] produced: ["
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<< this->Result.c_str() << "]" << std::endl;
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}
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return 1;
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}
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void cmCommandArgumentParserHelper::CleanupParser()
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{
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std::vector<char*>::iterator sit;
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for ( sit = this->Variables.begin();
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sit != this->Variables.end();
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++ sit )
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{
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delete [] *sit;
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}
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this->Variables.erase(this->Variables.begin(), this->Variables.end());
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}
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int cmCommandArgumentParserHelper::LexInput(char* buf, int maxlen)
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{
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if ( maxlen < 1 )
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{
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return 0;
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}
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if ( this->InputBufferPos < this->InputBuffer.size() )
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{
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buf[0] = this->InputBuffer[ this->InputBufferPos++ ];
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if ( buf[0] == '\n' )
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{
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this->CurrentLine ++;
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}
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return(1);
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}
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else
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{
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buf[0] = '\n';
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return( 0 );
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}
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}
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void cmCommandArgumentParserHelper::Error(const char* str)
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{
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unsigned long pos = static_cast<unsigned long>(this->InputBufferPos);
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cmOStringStream ostr;
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ostr << str << " (" << pos << ")";
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this->SetError(ostr.str());
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}
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void cmCommandArgumentParserHelper::SetMakefile(const cmMakefile* mf)
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{
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this->Makefile = mf;
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this->StrictMode = mf->GetCMakeInstance()->GetStrictMode();
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}
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void cmCommandArgumentParserHelper::SetResult(const char* value)
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{
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if ( !value )
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{
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this->Result = "";
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return;
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}
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this->Result = value;
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}
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void cmCommandArgumentParserHelper::SetError(std::string const& msg)
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{
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// Keep only the first error.
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if(this->ErrorString.empty())
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{
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this->ErrorString = msg;
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}
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}
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