tdf#43569 DOC input: insert ConditionalText field instead of field marks

In case of IF field input inside DOC document the ConditionalText field
should be created instead of the two field marks that leads to handling
of unsupported field routine.

Added unit tests.

Change-Id: I31875d8e6be7f536766ef640a366b843f7e0532c
Reviewed-on: https://gerrit.libreoffice.org/46022
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>

1 files changed, 100 insertions, 0 deletions

diff --git a/sw/source/core/fields/docufld.cxx b/sw/source/core/fields/docufld.cxx
index a53c16882c34..8e360155f1b8 100644
--- a/sw/source/core/fields/docufld.cxx
+++ b/sw/source/core/fields/docufld.cxx
@@ -1541,6 +1541,106 @@ OUString SwHiddenTextField::GetDBName(const OUString& rName, SwDoc *pDoc)
     return aData.sDataSource + OUStringLiteral1(DB_DELIM) + aData.sCommand;
 }
 
+// [aFieldDefinition] value sample : " IF A == B \"TrueText\" \"FalseText\""
+void SwHiddenTextField::ParseIfFieldDefinition(const OUString& aFieldDefinition,
+                                               OUString& rCondition,
+                                               OUString& rTrue,
+                                               OUString& rFalse)
+{
+    // get all positions inside the input string where words are started
+    //
+    // In: " IF A == B \"TrueText\" \"FalseText\""
+    //      0         1           2          3
+    //      01234567890 123456789 01 2345678901 2
+    //
+    // result:
+    //      [1, 4, 6, 9, 11, 22]
+    std::vector<sal_Int32> wordPosition;
+    {
+        bool quoted = false;
+        bool insideWord = false;
+        for (sal_Int32 i = 0; i < aFieldDefinition.getLength(); i++)
+        {
+            if (quoted)
+            {
+                if (aFieldDefinition[i] == '\"')
+                {
+                    quoted = false;
+                    insideWord = false;
+                }
+            }
+            else
+            {
+                if (aFieldDefinition[i] == ' ')
+                {
+                    // word delimiter
+                    insideWord = false;
+                }
+                else
+                {
+                    if (insideWord)
+                    {
+                        quoted = (aFieldDefinition[i] == '\"');
+                    }
+                    else
+                    {
+                        insideWord = true;
+                        wordPosition.push_back(i);
+                        quoted = (aFieldDefinition[i] == '\"');
+                    }
+                }
+            }
+        }
+    }
+
+    // first word is always "IF"
+    // last two words are: true-case and false-case,
+    // everything before is treated as condition expression
+    // => we need at least 4 words to be inside the input string
+    if (wordPosition.size() < 4)
+    {
+        return;
+    }
+
+
+    const sal_Int32 conditionBegin = wordPosition[1];
+    const sal_Int32 trueBegin      = wordPosition[wordPosition.size() - 2];
+    const sal_Int32 falseBegin     = wordPosition[wordPosition.size() - 1];
+
+    const sal_Int32 conditionLength = trueBegin - conditionBegin;
+    const sal_Int32 trueLength      = falseBegin - trueBegin;
+
+    // Syntax
+    // OUString::copy( sal_Int32 beginIndex, sal_Int32 count )
+    rCondition = aFieldDefinition.copy(conditionBegin, conditionLength);
+    rTrue = aFieldDefinition.copy(trueBegin, trueLength);
+    rFalse = aFieldDefinition.copy(falseBegin);
+
+    // trim
+    rCondition = rCondition.trim();
+    rTrue = rTrue.trim();
+    rFalse = rFalse.trim();
+
+    // remove quotes
+    if (rCondition.getLength() >= 2)
+    {
+        if (rCondition[0] == '\"' && rCondition[rCondition.getLength() - 1] == '\"')
+            rCondition = rCondition.copy(1, rCondition.getLength() - 2);
+    }
+    if (rTrue.getLength() >= 2)
+    {
+        if (rTrue[0] == '\"' && rTrue[rTrue.getLength() - 1] == '\"')
+            rTrue = rTrue.copy(1, rTrue.getLength() - 2);
+    }
+    if (rFalse.getLength() >= 2)
+    {
+        if (rFalse[0] == '\"' && rFalse[rFalse.getLength() - 1] == '\"')
+            rFalse = rFalse.copy(1, rFalse.getLength() - 2);
+    }
+
+    // Note: do not make trim once again, while this is a user defined data
+}
+
 // field type for line height 0
 
 SwHiddenParaFieldType::SwHiddenParaFieldType()