Changeset 1125

Timestamp:

2000-04-18T16:06:12+12:00 (24 years ago)

Author:

kjm18

Message:

added GetCStr and BrowseCompare

Location:

trunk/gsdl/src/mgpp/text

Files:

• UCArray.cpp (modified) (2 diffs)
• UCArray.h (modified) (3 diffs)

trunk/gsdl/src/mgpp/text/UCArray.cpp

@@ -35 +35 @@
 }
 
+char * GetCStr(UCArray text) {
+
+  char *cstr = new char[text.size()+1];
+  UCArray::const_iterator here = text.begin();
+  UCArray::const_iterator end = text.end();
+
+  int i = 0;
+  while (here != end) {
+    cstr[i] = (char)*here;
+    here++; i++;
+  }
+  cstr[i]='\0';
+  return cstr;
+}
 
 ostream &operator<<(ostream &s, const UCArray &a) {
@@ -214 +228 @@
 }
 
+/* comparison for browse index - items match if the smaller word
+   is a prefix of the larger word, case independent
+*/
+int BrowseCompare (const UCArray &a1, const UCArray &a2) {
+  unsigned int l1 = a1.size();
+  unsigned int l2 = a2.size();
+  unsigned int l = (l1 < l2) ? l1 : l2; // l is the shorter of the two
+  int diff = 0;
+
+  UCArray::const_iterator a1Here = a1.begin();
+  UCArray::const_iterator a2Here = a2.begin();
+
+  while(l--) {
+    if ((diff = casecharmap[*a1Here] - casecharmap[*a2Here]) !=0)
+      return diff;
+    a1Here++;
+    a2Here++;
+  }
+  return 0;
+
+}
 
 unsigned long PrefixLen (const UCArray &a1, const UCArray &a2) {

trunk/gsdl/src/mgpp/text/UCArray.h

@@ -51 +51 @@
 // functions to manipulate UCArrays
 void SetCStr (UCArray &text, const char *cStr);
+char * GetCStr(UCArray text);
 inline void UCArrayClear (UCArray &a) {
   a.erase (a.begin(), a.end());
@@ -89 +90 @@
 // compares the two strings in dictionary order
 int DictCompare (const UCArray &a1, const UCArray &a2);
-
+// compares the two strings, case independent, a match (ie 0) is
+// if one string is a prefix of the other
+int BrowseCompare (const UCArray &a1, const UCArray &a2);
 
 struct LTUCArray {
@@ -113 +116 @@
 
 #endif
+
+
+
+
+