fix for escaping backslash in output

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/sitecing_parser.ll b/lib/sitecing_parser.ll
index 8dd8d5f..53df9a0 100644
--- a/lib/sitecing_parser.ll
+++ b/lib/sitecing_parser.ll
@@ -1,643 +1,644 @@
 %{
  /*
   * XXX: I have a strong feeling that this parser should be completely rewritten.
   */
 #include <iostream>
 #include <fstream>
 #include <cassert>
 #include <stdexcept>
 using namespace std;
 #include <konforka/util.h>
 #include "sitecing/sitecing_util.h"
 #include "sitecing/sitecing_exception.h"
 using namespace sitecing;
 #define sitecing_parser_flexlexer_once
 #include "sitecing/sitecing_parser.h"
 #include "sitecing/sitecing_enflesher.h"
 #undef yyFlexLexer
 #define yyFlexLexer sitecing_parserFlexLexer
 %}
 %x SLASHSTAR_COMMENT SLASHSLASH_COMMENT STRING
 %x CODELINE CLASSLINE DECLLINE IMPLLINE DECLBLOCK IMPLBLOCK VARLINE VARINIT
 %x IMPORTLINE IMPORTCOMPONENT
 %x IMPORTTYPELINE IMPORTTYPECOMPONENT
 %x DERIVELINE DERIVECOMPONENT
 %x CONSTRUCTOR DESTRUCTOR CODEMETHODLINE CODEMETHODARGS
 %x CODEMETHODBLOCK INLINE METHODLINE METHODARGS METHODBLOCK CODEBLOCK OUTPUTBLOCK
 %x PRAGMALINE
 %option 8bit c++ verbose noyywrap yyclass="sitecing_parser" prefix="sitecing_parser" stack yylineno
 
         WHITESPACE[ \t]
         ID      [A-Za-z_][A-Za-z0-9_]*
         NOIDCHAR[^A-Za-z0-9_]
 
 %%
 
 <INITIAL>{
             ^\%\%class{WHITESPACE}+{
         // TODO: signal error if we already have class name acquired from source.
         modi.push_front(modus_operandi(modus_operandi::flag_devour_comments|modus_operandi::flag_devour_whitespace));
         BEGIN(CLASSLINE);
     }
             ^\%\%decl{WHITESPACE}+{
         modi.push_front(modus_operandi(0));
         anchor();
         BEGIN(DECLLINE);
     }
             ^\%\%impl{WHITESPACE}+{
         modi.push_front(modus_operandi(0));
         anchor();
         BEGIN(IMPLLINE);
     }
             \<\%decl\>          {
         modi.push_front(modus_operandi(0));
         anchor();
         BEGIN(DECLBLOCK);
     }
             \<\%impl\>          {
         modi.push_front(modus_operandi(0));
         anchor();
         BEGIN(IMPLBLOCK);
     }
             ^\%\%var{WHITESPACE}+{
         modi.push_front(modus_operandi(modus_operandi::flag_devour_comments));
         anchor();
         BEGIN(VARLINE);
     }
             ^\%\%import{WHITESPACE}+{
         modi.push_front(modus_operandi(modus_operandi::flag_devour_comments));
         BEGIN(IMPORTLINE);
     }
     ^\%\%import_type{WHITESPACE}+ {
         modi.push_front(modus_operandi(modus_operandi::flag_devour_comments));
         BEGIN(IMPORTTYPELINE);
     }
             ^\%\%derive{WHITESPACE}+{
         modi.push_front(modus_operandi(modus_operandi::flag_devour_comments));
         BEGIN(DERIVELINE);
     }
             \<\%constructor\>{
         modi.push_front(modus_operandi());
         anchor();
         BEGIN(CONSTRUCTOR);
     }
             \<\%destructor\>{
         modi.push_front(modus_operandi());
         anchor();
         BEGIN(DESTRUCTOR);
     }
             \<\%codemethod{WHITESPACE}+{
         modi.push_front(modus_operandi(modus_operandi::flag_devour_comments));
         anchor();
         BEGIN(CODEMETHODLINE);
     }
     \<\%method{WHITESPACE}+ {
         modi.push_front(modus_operandi(modus_operandi::flag_devour_comments));
         anchor();
         BEGIN(METHODLINE);
     }
             ^\%\%pragma{WHITESPACE}+{
         modi.push_front(modus_operandi(modus_operandi::flag_devour_comments));
         BEGIN(PRAGMALINE);
     }
             <<EOF>>{
         assert(modi.size()==1);
         M().modify(modus_operandi::modus_preop);
         LexerOutput(";",1);
         return 0;
     }
 }
         <<EOF>>throw preprocessor_error(CODEPOINT,"unexpected end of file",lineno());
 
 <CODEBLOCK,CODEMETHODBLOCK>{
             "<%output>"{
         anchor();
         yy_push_state(OUTPUTBLOCK);
     }
 }
 
 <PRAGMALINE>{
             {WHITESPACE}+{
         modus_operandi& m = M();
         if(!m.output.empty()) {
             string::size_type eq = m.output.find('=');
             if(eq==string::npos) {
                 pragmas[m.output]=m.output;
             }else{
                 pragmas[m.output.substr(0,eq)] = m.output.substr(eq+1);
             }
             m.output.erase();
         }
     }
             \n          {
         modus_operandi& m = M();
         if(!m.output.empty()) {
             string::size_type eq = m.output.find('=');
             if(eq==string::npos) {
                 pragmas[m.output]=m.output;
             }else{
                 pragmas[m.output.substr(0,eq)] = m.output.substr(eq+1);
             }
             m.output.erase();
         }
         modi.pop_front();
         BEGIN(INITIAL);
         anchor();
     }
 }
 
 <METHODLINE>{
             {WHITESPACE}+{
         modus_operandi& m = M();
         if(!m.output.empty()) {
             if(!m._lastid.empty()) {
                 if(!m._type.empty()) m._type += ' ';
                 m._type += m._lastid;
             }
             m._lastid = m.output;
             m.output.clear();
         }
     }
             \*{
         modus_operandi& m = M();
         ECHO;
         if(!m._lastid.empty()) {
             if(!m._type.empty()) m._type += ' ';
             m._type += m._lastid;
         }
         m._lastid = m.output;
         m.output.clear();
     }
             \({
         modus_operandi& m = M();
         if(m.output.empty()) {
             m._name=m._lastid;
         }else{
             if(!m._lastid.empty()) { // XXX: lastid, I believe should never be emtpy...
                 if(!m._type.empty()) m._type += ' ';
                 m._type += m._lastid;
             }
             m._name = m.output;
             m.output.clear();
         }
         ECHO;
         BEGIN(METHODARGS);
     }
 }
 <METHODARGS>{
             \%\>{
         modus_operandi& m = M();
         m._args = m.output;
         m.output.clear();
         anchor();
         BEGIN(METHODBLOCK);
     }
 }
 
 <INITIAL,METHODBLOCK,OUTPUTBLOCK>{
             \<\%{WHITESPACE}+{
         M().modify(modus_operandi::modus_postop);
         anchor();
         LexerOutput("(",1);
         yy_push_state(INLINE);
     }
             ^\%{WHITESPACE}{
         M().modify(modus_operandi::modus_code);
         anchor();
         yy_push_state(CODELINE);
     }
             \<\%code\>{
         M().modify(modus_operandi::modus_code);
         anchor();
         yy_push_state(CODEBLOCK);
     }
     "</%output>" {
         if(YY_START!=OUTPUTBLOCK) throw preprocessor_error(CODEPOINT,"unexpected tag",lineno());
         M().modify(modus_operandi::modus_code);
         anchor();
         yy_pop_state();
     }
 }
 
         <INLINE>\%\>LexerOutput(")",1); M().modus=modus_operandi::modus_preop; yy_pop_state();
         <CODELINE>\nyy_pop_state();
 
 <CODEMETHODLINE>{
             {WHITESPACE}+{
         modus_operandi& m = M();
         if(!m.output.empty()) {
             if(!m._lastid.empty()) {
                 if(!m._type.empty()) m._type += ' ';
                 m._type += m._lastid;
             }
             m._lastid = m.output;
             m.output.clear();
         }
     }
             \*{
         modus_operandi& m = M();
         ECHO;
         if(!m._lastid.empty()) {
             if(!m._type.empty()) m._type += ' ';
             m._type += m._lastid;
         }
         m._lastid = m.output;
         m.output.clear();
     }
             \({
         modus_operandi& m = M();
         if(m.output.empty()) {
             m._name=m._lastid;
         }else{
             if(!m._lastid.empty()) { // XXX: lastid, I believe should never be emtpy...
                 if(!m._type.empty()) m._type += ' ';
                 m._type += m._lastid;
             }
             m._name = m.output;
             m.output.clear();
         }
         ECHO;
         BEGIN(CODEMETHODARGS);
     }
 }
 <CODEMETHODARGS>{
             \%\>{
         modus_operandi& m = M();
         m._args = m.output;
         m.output.clear();
         m.flags=0;
         anchor();
         BEGIN(CODEMETHODBLOCK);
     }
 }
 
 <IMPORTLINE>{
             {WHITESPACE}+{ }
             {ID}{
         modus_operandi& m = M();
         if(!m._name.empty())
             throw preprocessor_error(CODEPOINT,"syntax error",lineno());
         m._name = yytext;
     }
             \=  {
         M().output.clear();
         BEGIN(IMPORTCOMPONENT);
     }
 }
 <IMPORTCOMPONENT>{
             {WHITESPACE}+{ }
             \n{
         modus_operandi& m = M();
         string::size_type t = m.output.find_first_not_of(" \t");
         if(t!=string::npos)
             m.output.erase(0,t);
         t = m.output.find_last_not_of(" \t;");
         if(t!=string::npos)
             m.output.erase(t+1);
         if(m.output[0]=='"' && m.output[m.output.length()-1]=='"') {
             m.output.erase(0,1);
             m.output.erase(m.output.length()-1);
         }
         string c = konforka::combine_path(component_basename,m.output);
         member_variables.push_back(member_variable(m._type,m._name,konforka::normalize_path(c,konforka::strip_leading_slash),true));
         modi.pop_front();
         BEGIN(INITIAL);
     }
 }
 
 <IMPORTTYPELINE>{
             {WHITESPACE}+{ }
             {ID}{
         modus_operandi& m = M();
         if(!m._name.empty())
             throw preprocessor_error(CODEPOINT,"syntax error",lineno());
         m._name = yytext;
     }
             \=  {
         M().output.clear();
         BEGIN(IMPORTTYPECOMPONENT);
     }
 }
 <IMPORTTYPECOMPONENT>{
             {WHITESPACE}+{ }
             \n{
         modus_operandi& m = M();
         string::size_type t = m.output.find_first_not_of(" \t");
         if(t!=string::npos)
             m.output.erase(0,t);
         t = m.output.find_last_not_of(" \t;");
         if(t!=string::npos)
             m.output.erase(t+1);
         if(m.output[0]=='"' && m.output[m.output.length()-1]=='"') {
             m.output.erase(0,1);
             m.output.erase(m.output.length()-1);
         }
         string c = konforka::combine_path(component_basename,m.output);
         member_variables.push_back(member_variable(m._type,m._name,konforka::normalize_path(c,konforka::strip_leading_slash),true,true));
         modi.pop_front();
         BEGIN(INITIAL);
     }
 }
 
 <DERIVELINE>{
             {WHITESPACE}+{ }
             {ID}{
         modus_operandi& m = M();
         if(!m._name.empty())
             throw preprocessor_error(CODEPOINT,"syntax_error",lineno());
         m._name = yytext;
     }
             \=  {
         M().output.clear();
         BEGIN(DERIVECOMPONENT);
     }
 }
 <DERIVECOMPONENT>{
             {WHITESPACE}+{ }
     \n {
         modus_operandi& m = M();
         string::size_type t = m.output.find_first_not_of(" \t");
         if(t!=string::npos)
             m.output.erase(0,t);
         t = m.output.find_last_not_of(" \t;");
         if(t!=string::npos)
             m.output.erase(t+1);
         if(m.output[0]=='"' && m.output[m.output.length()-1]=='"') {
             m.output.erase(0,1);
             m.output.erase(m.output.length()-1);
         }
         string c = konforka::combine_path(component_basename,m.output);
         ancestor_classes.push_back(ancestor_class(m._name,konforka::normalize_path(c,konforka::strip_leading_slash)));
         modi.pop_front();
         BEGIN(INITIAL);
     }
 }
 
 <VARLINE>{
             {WHITESPACE}+{
         modus_operandi& m = M();
         if(!m.output.empty()) {
             if(!m._lastid.empty()) {
                 if(!m._type.empty()) m._type += ' ';
                 m._type += m._lastid;
             }
             m._lastid = m.output;
             m.output.clear();
         }
     }
             \*{
         modus_operandi& m = M();
         ECHO;
         if(!m._lastid.empty()) {
             if(!m._type.empty()) m._type += ' ';
             m._type += m._lastid;
         }
         m._lastid = m.output;
         m.output.clear();
     }
             \;|\n|\={
         modus_operandi& m = M();
         if(m.output.empty()) {
             m._name=m._lastid;
         }else{
             if(!m._lastid.empty()) { // XXX: lastid should never be emtpy, I believe?
                 if(!m._type.empty()) m._type += ' ';
                 m._type += m._lastid;
             }
             m._name=m.output;
             m.output.clear();
         }
         BEGIN(VARINIT);
         if(*yytext!='=')
             unput('\n');
     }
 }
 <VARINIT>{
             \n{
         modus_operandi& m = M();
         string::size_type t = m.output.find_first_not_of(" \t");
         if(t!=string::npos)
             m.output.erase(0,t);
         t = m.output.find_last_not_of(" \t;");
         if(t!=string::npos)
             m.output.erase(t+1);
         member_variables.push_back(member_variable(m._type,m._name,m.output));
         if(!m.output.empty())
             have_initializers=true;
         modi.pop_front();
         BEGIN(INITIAL);
     }
 }
         <DECLLINE>\n{
     ECHO;
     decl += M().output;
     modi.pop_front();
     BEGIN(INITIAL);
 }
         <IMPLLINE>\n{
     ECHO;
     impl += M().output;
     modi.pop_front();
     BEGIN(INITIAL);
 }
         <CLASSLINE>\n{
     class_name = M().output;
     modi.pop_front();
     BEGIN(INITIAL);
 }
 <CLASSLINE,DECLLINE,IMPLLINE,VARLINE,VARINIT,IMPORTLINE,IMPORTCOMPONENT,CODEMETHODLINE,CODEMETHODARGS,INLINE,METHODLINE,METHODARGS,DECLBLOCK,IMPLBLOCK,CONSTRUCTOR,DESTRUCTOR,CODEMETHODBLOCK,CODELINE,CODEBLOCK,PRAGMALINE,DERIVELINE,DERIVECOMPONENT>{
             "/*"{
         yy_push_state(SLASHSTAR_COMMENT);
         if(!M().devour_comments()) {
             ECHO;
         }
     }
             "//"{
         yy_push_state(SLASHSLASH_COMMENT);
         if(!M().devour_comments()) {
             ECHO;
         }
     }
             \"  {
         yy_push_state(STRING);
             ECHO;
     }
             \'\\.\'{
         ECHO;
     }
 }
 
 <INITIAL,METHODBLOCK,OUTPUTBLOCK>{
             \"soft_anchor(); M().modify(modus_operandi::modus_text); LexerOutput("\\\"",2);
             \nsoft_anchor(); M().modify(modus_operandi::modus_text); LexerOutput("\\n",2);
             \rsoft_anchor(); M().modify(modus_operandi::modus_text); LexerOutput("\\r",2);
             \tsoft_anchor(); M().modify(modus_operandi::modus_text); LexerOutput("\\t",2);
             \bsoft_anchor(); M().modify(modus_operandi::modus_text); LexerOutput("\\b",2);
             \asoft_anchor(); M().modify(modus_operandi::modus_text); LexerOutput("\\a",2);
+            \\soft_anchor(); M().modify(modus_operandi::modus_text); LexerOutput("\\\\",2);
             .soft_anchor(); M().modify(modus_operandi::modus_text); ECHO;
             {WHITESPACE}+soft_anchor(); M().modify(modus_operandi::modus_text); ECHO;
 }
 
 <DECLBLOCK,IMPLBLOCK,CONSTRUCTOR,DESTRUCTOR,CODEMETHODBLOCK,METHODBLOCK,CODEBLOCK>{
             \<\/\%decl\>{
         if(YY_START!=DECLBLOCK) throw preprocessor_error(CODEPOINT,"tags mismatch",lineno());
         decl += M().output;
         modi.pop_front();
         BEGIN(INITIAL);
     }
             \<\/\%impl\>{
         if(YY_START!=IMPLBLOCK) throw preprocessor_error(CODEPOINT,"tags mismatch",lineno());
         impl += M().output;
         modi.pop_front();
         BEGIN(INITIAL);
     }
             \<\/\%constructor\>{
         if(YY_START!=CONSTRUCTOR) throw preprocessor_error(CODEPOINT,"tags mismatch",lineno());
         member_functions.push_back(member_function("","","",M().output));
         have_constructor = true;
         modi.pop_front();
         BEGIN(INITIAL);
     }
             \<\/\%destructor\>{
         if(YY_START!=DESTRUCTOR) throw preprocessor_error(CODEPOINT,"tags mismatch",lineno());
         member_functions.push_back(member_function("","~","",M().output));
         modi.pop_front();
         BEGIN(INITIAL);
     }
             \<\/\%codemethod\>{
         if(YY_START!=CODEMETHODBLOCK) throw preprocessor_error(CODEPOINT,"tags mismatch",lineno());
         modus_operandi& m = M();
         member_functions.push_back(member_function(m._type,m._name,m._args,m.output));
         modi.pop_front();
         BEGIN(INITIAL);
     }
     \<\/%method\> {
         if(YY_START!=METHODBLOCK) throw preprocessor_error(CODEPOINT,"tags mismatch",lineno());
         modus_operandi& m = M();
         m.modify(modus_operandi::modus_code);
         member_functions.push_back(member_function(m._type,m._name,m._args,m.output));
         modi.pop_front();
         BEGIN(INITIAL);
     }
     \<\/%code\> {
         if(YY_START!=CODEBLOCK) throw preprocessor_error(CODEPOINT,"tags mismatch",lineno());
         yy_pop_state();
     }
             \n  ECHO;
 }
 
 <SLASHSTAR_COMMENT>{
             "*/"{
         if(!M().devour_comments()) {
             ECHO;
         }
         yy_pop_state();
         unput(' ');
     }
             \n{
         if(!M().devour_comments()) {
             ECHO;
         }
     }
 }
 <SLASHSLASH_COMMENT>{
             \n{
         if(!M().devour_comments()) {
             ECHO;
         }
         yy_pop_state();
         if(YY_START!=CODEBLOCK && YY_START!=CODEMETHODBLOCK && YY_START!=IMPLBLOCK && YY_START!=DECLBLOCK)
             unput('\n');
     }
 }
         <SLASHSTAR_COMMENT,SLASHSLASH_COMMENT>.{
     if(!M().devour_comments()) {
         ECHO;
     }
 }
 <STRING>{
             \\.ECHO;
             \"ECHO; yy_pop_state();
             .ECHO;
 }
 
         {WHITESPACE}+{
     if(!(M().flags&modus_operandi::flag_devour_whitespace)) {
         ECHO;
     }
 }
 
 %%
 
 sitecing_parser::sitecing_parser(component_factory& f)
     : factory(f), have_initializers(false), have_constructor(false),
     base_class("sitecing::cgi_component"),
     base_header("sitecing/cgi_component.h"),
     skeleton(__SC_DEFAULT_SKELETON) {
     }
 
 void sitecing_parser::preprocess(const string& in) {
     ifstream ifs(in.c_str(),ios::in);
     if(!ifs.good())
         throw preprocessor_error(CODEPOINT,"failed to open input file");
     input_file = in;
     modi.push_front(modus_operandi(0));
     switch_streams(&ifs,NULL);
     if(yylex())
         throw preprocessor_error(CODEPOINT,"unknown error");
     pragmas_t::const_iterator mp = pragmas.find("main");
     if(mp==pragmas.end()) {
         member_functions.push_back(member_function("void","main","(int _magic,va_list _args)",M().output));
     }else{
         member_functions.push_back(
             member_function(
                 "void","main","(int _magic,va_list _args)",
                 mp->second+"::main(_magic,_args);"
             )
         );
     }
     if(have_initializers && !have_constructor)
         member_functions.push_back(member_function("","","",""));
     sitecing_enflesher enflesher(*this);
     enflesher.enflesh();
 }
 
 void sitecing_parser::LexerOutput(const char* buf,int size) {
     assert(modi.size());
     M().output.append(buf,size);
 }
 
 static const char *modus_transitions
     [sitecing_parser::modus_operandi::modi]
     [sitecing_parser::modus_operandi::modi] = {
 // To:
 // code   preop               postop                text                         From:
  { "",    "(*(__SCIF->out))", "(*(__SCIF->out))<<", "(*(__SCIF->out))<<\"" }, // code
  { ";",   "",                 "<<",                 "<<\""                 }, // preop
  { NULL,  NULL,               "",                   "\""                   }, // postop
  { "\";", "\"",               "\"<<",               ""                     }  // text
 };
 
 void sitecing_parser::modus_operandi::modify(modus_t m) {
     const char * x = modus_transitions[modus][m];
     assert(x);
     output += x;
     modus = m;
 }
 
 void sitecing_parser::soft_anchor() {
     if(M().modus!=modus_operandi::modus_text)
         anchor();
 }
 void sitecing_parser::anchor() {
     if(M().modus==modus_operandi::modus_text)
         M().modify(modus_operandi::modus_preop);
     M().output += "\n#line ";
     char tmp[7];
     snprintf(tmp,sizeof(tmp),"%d",lineno());
     M().output += tmp;
     M().output += " \"";
     M().output += input_file;
     M().output += "\"\n";
 }
 /* vim:set ft=lex: */