Moved stripIndentation() to util, make it safe for empty input

Author: doxygen

src/pyscanner.l

@@ -141,7 +141,6 @@ static void initSpecialBlock(yyscan_t yyscanner);
 static void searchFoundDef(yyscan_t yyscanner);
 static void searchFoundClass(yyscan_t yyscanner);
 static QCString findPackageScope(yyscan_t yyscanner,const char *fileName);
-static void stripIndentation(QCString &doc,const int indentationLevel);
 
 static yy_size_t yyread(yyscan_t yyscanner,char *buf,yy_size_t max_size);
 
@@ -1528,55 +1527,6 @@ static inline int computeIndent(const char *s)
   return col;
 }
 
-// strip up to \a indentationLevel spaces from each line in \a doc (excluding the first line)
-static void stripIndentation(QCString &doc,const int indentationLevel)
-{
-  if (indentationLevel <= 0) return; // nothing to strip
-
-  // by stripping content the string will only become shorter so we write the results
-  // back into the input string and then resize it at the end.
-  char c;
-  const char *src = doc.data();
-  char *dst = doc.rawData();
-  bool insideIndent = false; // skip the initial line from stripping
-  int cnt = 0;
-  while ((c=*src++)!=0)
-  {
-    // invariant: dst<=src
-    switch(c)
-    {
-      case '\n':
-        *dst++ = c;
-        insideIndent = true;
-        cnt = indentationLevel;
-        break;
-      case ' ':
-        if (insideIndent)
-        {
-          if (cnt>0) // count down the spacing until the end of the indent
-          {
-            cnt--;
-          }
-          else // reached the end of the indent, start of the part of the line to keep
-          {
-            insideIndent = false;
-            *dst++ = c;
-          }
-        }
-        else // part after indent, copy to the output
-        {
-          *dst++ = c;
-        }
-        break;
-      default:
-        insideIndent = false;
-        *dst++ = c;
-        break;
-    }
-  }
-  doc.resize(dst-doc.data()+1);
-}
-
 static QCString findPackageScopeFromPath(yyscan_t yyscanner,const QCString &path)
 {
   struct yyguts_t *yyg = (struct yyguts_t*)yyscanner;

src/util.cpp

@@ -7920,6 +7920,55 @@ QCString stripIndentation(const QCString &s)
   return result.data();
 }
 
+// strip up to \a indentationLevel spaces from each line in \a doc (excluding the first line)
+static void stripIndentation(QCString &doc,const int indentationLevel)
+{
+  if (indentationLevel <= 0 || doc.isEmpty()) return; // nothing to strip
+
+  // by stripping content the string will only become shorter so we write the results
+  // back into the input string and then resize it at the end.
+  char c;
+  const char *src = doc.data();
+  char *dst = doc.rawData();
+  bool insideIndent = false; // skip the initial line from stripping
+  int cnt = 0;
+  while ((c=*src++)!=0)
+  {
+    // invariant: dst<=src
+    switch(c)
+    {
+      case '\n':
+        *dst++ = c;
+        insideIndent = true;
+        cnt = indentationLevel;
+        break;
+      case ' ':
+        if (insideIndent)
+        {
+          if (cnt>0) // count down the spacing until the end of the indent
+          {
+            cnt--;
+          }
+          else // reached the end of the indent, start of the part of the line to keep
+          {
+            insideIndent = false;
+            *dst++ = c;
+          }
+        }
+        else // part after indent, copy to the output
+        {
+          *dst++ = c;
+        }
+        break;
+      default:
+        insideIndent = false;
+        *dst++ = c;
+        break;
+    }
+  }
+  doc.resize(dst-doc.data()+1);
+}
+
 
 bool fileVisibleInIndex(const FileDef *fd,bool &genSourceFile)
 {

src/util.h

@@ -472,6 +472,7 @@ QCString processMarkup(const QCString &s);
 bool protectionLevelVisible(Protection prot);
 
 QCString stripIndentation(const QCString &s);
+void stripIndentation(QCString &doc,const int indentationLevel);
 
 QCString getDotImageExtension(void);