Improved mapping between types of input and its string representation.

Now, it's possible to link all type with more than one string
representation and it's very easy.
Whole code of chooseParser() functions is simplified.

src/parser/choose_parser.cpp

@@ -41,10 +41,10 @@ static QRegExp diff("^[0-9]+(,[0-9]*)?c[0-9]+(,[0-9])?$");
 enum Type {
     NONE = -1,
     GIT = 0,
-    BZR,
-    SVN,
-    DIFFR,
-    DIFF,
+    BZR = 1,
+    SVN = 2,
+    DIFFR = 3,
+    DIFF = 4,
     NUM_TYPES
 };
 
@@ -56,6 +56,31 @@ const char *types[] = {
     "diff"
 };
 
+/**
+ * Mapping between Type and name of type.
+ */
+struct TypesMapping {
+    Type type;
+    const char *name;
+} types_map[] = {
+    { GIT, "git" },
+    { BZR, "bzr" },
+    { BZR, "bazaar" },
+    { SVN, "svn" },
+    { SVN, "subversion" },
+    { DIFFR, "diffr" },
+    { DIFF, "diff" },
+};
+
+/**
+ * Length of array types_map - statically initialized.
+ */
+int types_map_len = sizeof(types_map) / sizeof(const char *);
+
+
+
+static Parser *parser(In &in, Type);
+
 
 Parser *chooseParser(In &in)
 {
@@ -86,7 +111,22 @@ Parser *chooseParser(In &in)
 
     in.endBuff();
 
-    if (type != NONE){
+    return parser(in, type);
+}
+
+Parser *chooseParser(In &in, const char *type)
+{
+    for (int i=0; i < types_map_len; i++){
+        if (strcasecmp(type, types_map[i].name) == 0){
+            return parser(in, types_map[i].type);
+        }
+    }
+    return 0;
+}
+
+Parser *parser(In &in, Type type)
+{
+    if (type >= 0 && type < NUM_TYPES){
         MSG("Chosen type '" << types[type] << "'");
     }
 
@@ -106,25 +146,3 @@ Parser *chooseParser(In &in)
     }
 }
 
-Parser *chooseParser(In &in, const char *type)
-{
-    if (strcasecmp(type, "git") == 0){
-        MSG("Chosen type '" << types[GIT] << "'");
-        return new ParserGit(in);
-    }else if (strcasecmp(type, "bzr") == 0){
-        MSG("Chosen type '" << types[BZR] << "'");
-        return new ParserBzr(in);
-    }else if (strcasecmp(type, "svn") == 0){
-        MSG("Chosen type '" << types[SVN] << "'");
-        return new ParserSvn(in);
-    }else if (strcasecmp(type, "diffr") == 0){
-        MSG("Chosen type '" << types[DIFFR] << "'");
-        return new ParserDiffR(in);
-    }else if (strcasecmp(type, "diff") == 0){
-        MSG("Chosen type '" << types[DIFF] << "'");
-        return new ParserDiff(in);
-    }
-
-    return 0;
-}
-