Release-1.2.0-20000806

1 files changed, 159 insertions, 38 deletions

diff --git a/addon/configgen/config_templ.l b/addon/configgen/config_templ.l
index e98ace9..3da3d56 100644
--- a/addon/configgen/config_templ.l
+++ b/addon/configgen/config_templ.l
@@ -27,6 +27,7 @@
 #include <qdir.h>
 #include <qtextstream.h>
 #include <qregexp.h>
+#include <qstack.h>
   
 #include "config.h"
 #include "version.h"
@@ -58,6 +59,7 @@ void initWarningFormat()
 #include "language.h"
 #endif
 
+#define MAX_INCLUDE_DEPTH 10
 #define YY_NEVER_INTERACTIVE 1
 #define YY_NO_UNPUT
   
@@ -72,16 +74,31 @@ void initWarningFormat()
  *
  *	static variables
  */
-  
-static const char * inputString;
-static int	    inputPosition;
-static int          yyLineNr;
-static QCString     tmpString;
-static QCString *   s=0;
-static bool    *    b=0;
-static QStrList *   l=0;
-static int          lastState;
-static QCString     elemStr;
+
+struct ConfigFileState
+{
+  int lineNr;
+  FILE *filePtr;
+  YY_BUFFER_STATE oldState;
+  YY_BUFFER_STATE newState;
+  QCString fileName;
+};  
+
+static const char       *inputString;
+static int	         inputPosition;
+static int               yyLineNr;
+static QCString          yyFileName;
+static QCString          tmpString;
+static QCString         *s=0;
+static bool             *b=0;
+static QStrList         *l=0;
+static int               lastState;
+static QCString          elemStr;
+static QCString          includeName;
+static QStrList          includePathList;
+static QStack<ConfigFileState> includeStack;  
+static int               includeDepth;
+
 #CONFIG Static
 
 /* -----------------------------------------------------------------
@@ -91,15 +108,100 @@ static QCString     elemStr;
 
 static int yyread(char *buf,int max_size)
 {
-    int c=0;
-    while( c < max_size && inputString[inputPosition] )
+    // no file included
+    if (includeStack.isEmpty()) 
     {
-	*buf = inputString[inputPosition++] ;
-	c++; buf++;
+        int c=0;
+	while( c < max_size && inputString[inputPosition] )
+	{
+	      *buf = inputString[inputPosition++] ;
+	      c++; buf++;
+  	}
+	return c;
+    } 
+    else 
+    {
+        //assert(includeStack.current()->newState==YY_CURRENT_BUFFER);
+	return fread(buf,1,max_size,includeStack.current()->filePtr);
     }
-    return c;
 }
 
+
+static FILE *tryPath(const char *path,const char *fileName)
+{
+  QCString absName=(QCString)path+"/"+fileName;
+  QFileInfo fi(absName);
+  if (fi.exists() && fi.isFile())
+  {
+    FILE *f=fopen(absName,"r");
+    if (!f) err("Error: could not open file %s for reading\n",absName.data());
+    return f;
+  }
+  return 0;
+}
+
+static FILE *findFile(const char *fileName)
+{
+  char *s=includePathList.first();
+  while (s) // try each of the include paths
+  {
+    FILE *f = tryPath(s,fileName);
+    if (f) return f;
+    s=includePathList.next();
+  } 
+  // try cwd if includePathList fails
+  return tryPath(".",fileName);
+}
+
+static void readIncludeFile(const char *incName)
+{
+  if (includeDepth==MAX_INCLUDE_DEPTH) {
+    err("Error: maximum include depth (%d) reached, %s is not included. Aborting...\n",
+	MAX_INCLUDE_DEPTH,incName);
+    exit(1);
+  } 
+
+  QCString inc = incName;
+  inc = inc.stripWhiteSpace();
+  uint incLen = inc.length();
+  if (inc.at(0)=='"' && inc.at(incLen-1)=='"') // strip quotes
+  {
+    inc=inc.mid(1,incLen-2);
+  }
+
+  FILE *f;
+
+  //printf("Searching for `%s'\n",incFileName.data());
+  if ((f=findFile(inc))) // see if the include file can be found
+  {
+    // For debugging
+#if SHOW_INCLUDES
+    for (i=0;i<includeStack.count();i++) msg("  ");
+    msg("@INCLUDE = %s: parsing...\n",inc.data());
+#endif
+
+    // store the state of the old file 
+    ConfigFileState *fs=new ConfigFileState;
+    fs->oldState=YY_CURRENT_BUFFER;
+    fs->lineNr=yyLineNr;
+    fs->fileName=yyFileName;
+    fs->filePtr=f;
+    // push the state on the stack
+    includeStack.push(fs);
+    // set the scanner to the include file
+    yy_switch_to_buffer(yy_create_buffer(f, YY_BUF_SIZE));
+    fs->newState=YY_CURRENT_BUFFER;
+    yyFileName=inc;
+    includeDepth++;
+  } 
+  else
+  {
+    err("Error: @INCLUDE = %s: not found!\n",inc.data());
+    exit(1);
+  }
+}
+
+
 %}
 
 %option noyywrap
@@ -111,13 +213,44 @@ static int yyread(char *buf,int max_size)
 %x      GetStrList
 %x      GetQuotedString
 %x      GetEnvVar
+%x      Include
 
 %%
 
 <*>\0x0d
 <Start,GetString,GetStrList,GetBool>"#"	{ BEGIN(SkipComment); }
 #CONFIG Rules
-<Start>[a-z_A-Z0-9]+			{ err("Warning: ignoring unknown tag `%s' at line %d\n",yytext,yyLineNr); }
+
+<Start>"@INCLUDE_PATH"[ \t]*"=" 	{ BEGIN(GetStrList); l=&includePathList; l->clear(); elemStr=""; }
+  /* include a config file */
+<Start>"@INCLUDE"[ \t]*"="     		{ BEGIN(Include);}
+<Include>([^ \"\t\r\n]+)|("\""[^\n\"]+"\"") { 
+  					  readIncludeFile(yytext); 
+  					  BEGIN(Start);
+					}
+<<EOF>>					{
+                                          //printf("End of include file\n");
+					  //printf("Include stack depth=%d\n",g_includeStack.count());
+                                          if (includeStack.isEmpty())
+					  {
+					    //printf("Terminating scanner!\n");
+					    yyterminate();
+					  }
+					  else
+					  {
+					    ConfigFileState *fs=includeStack.pop();
+					    pclose(fs->filePtr);
+					    YY_BUFFER_STATE oldBuf = YY_CURRENT_BUFFER;
+					    yy_switch_to_buffer( fs->oldState );
+					    yy_delete_buffer( oldBuf );
+					    yyLineNr=fs->lineNr;
+					    yyFileName=fs->fileName;
+					    delete fs; fs=0;
+                                            includeDepth--;
+					  }
+  					}
+
+<Start>[a-z_A-Z0-9]+			{ err("Warning: ignoring unknown tag `%s' at line %d, file %s\n",yytext,yyLineNr,yyFileName.data()); }
 <GetString,GetBool>\n			{ yyLineNr++; BEGIN(Start); }
 <GetStrList>\n				{ 
   					  yyLineNr++; 
@@ -141,22 +274,6 @@ static int yyread(char *buf,int max_size)
   					  BEGIN(GetQuotedString); 
                                           tmpString.resize(0); 
 					}
-  /*
-<GetString,GetStrList,GetQuotedString>"\$\("	{
-  				          //printf(">> Enter env\n"); 
-  					  lastEnvState=YY_START;
-  					  BEGIN(GetEnvVar);
-  					}
-<GetEnvVar>[a-z_A-Z0-9]+")"		{
-  					  yytext[yyleng-1]='\0';
-					  const char *env=getenv(yytext);
-					  int i;
-					  int l=strlen(env);
-					  //printf("env name=`%s' text=`%s'\n",yytext,env);
-					  for (i=l-1;i>=0;i--) unput(env[i]);
-					  BEGIN(lastEnvState);
-  					}
-  */
 <GetQuotedString>"\""|"\n" 		{ 
   					  //printf("Quoted String = `%s'\n",tmpString.data());
   					  if (lastState==GetString)
@@ -165,7 +282,7 @@ static int yyread(char *buf,int max_size)
 					    elemStr+=tmpString;
 					  if (*yytext=='\n')
 					  {
-					    err("Warning: Missing end quote (\") on line %d\n",yyLineNr);
+					    err("Warning: Missing end quote (\") on line %d, file %s\n",yyLineNr,yyFileName.data());
 					    yyLineNr++;
 					  }
 					  BEGIN(lastState);
@@ -185,8 +302,8 @@ static int yyread(char *buf,int max_size)
 					  {
 					    *b=FALSE; 
 					    warn_cont("Warning: Invalid value `%s' for "
-						 "boolean tag in line %d; use YES or NO\n",
-						 bs.data(),yyLineNr);
+						 "boolean tag in line %d, file %s; use YES or NO\n",
+						 bs.data(),yyLineNr,yyFileName.data());
 					  }
 					}
 <GetStrList>[^ \#\"\t\r\n]+		{
@@ -249,7 +366,7 @@ static void writeStringList(QTextStream &t,QStrList &l)
     const char *s=p;
     bool hasBlanks=FALSE;
     while ((c=*p++)!=0 && !hasBlanks) hasBlanks = (c==' ' || c=='\n' || c=='\t');
-    if (!first) t << "                        ";
+    if (!first) t << "                         ";
     first=FALSE;
     if (hasBlanks) t << "\"" << s << "\""; else t << s;
     p = l.next();
@@ -378,7 +495,7 @@ static void substEnvVarsInString(QCString &s)
     QCString env=getenv(s.mid(i+2,l-3));
     substEnvVarsInString(env); // recursively expand variables if needed.
     s = s.left(i)+env+s.right(s.length()-i-l);
-    p=i+l;
+    p=i+env.length(); // next time start at the end of the expanded string
   }
   //printf("substEnvVarInString(%s) end\n",s.data());
 }
@@ -866,11 +983,15 @@ void checkConfig()
   
 }
 
-void parseConfig(const QCString &s)
+void parseConfig(const QCString &s,const char *fn)
 {
   inputString   = s;
   inputPosition = 0;
   yyLineNr      = 1;
+  yyFileName=fn;
+  includeStack.setAutoDelete(TRUE);
+  includeStack.clear();
+  includeDepth  = 0;
   configYYrestart( configYYin );
   BEGIN( Start );
   configYYlex();