[#608] Fixed typos

src/lib/util/csv_file.cc

@@ -432,10 +432,10 @@ CSVRow::escapeCharacters(const std::string& orig_str, const std::string& charact
 
     // We add the first character of the escape tag to the list of
     // characters to escape.  This ensures input which happens to
-    // be valid esacpe sequences will be escaped.
+    // be valid escape sequences will be escaped.
     std::string escape_chars(characters + escape_tag[0]);
 
-    // Check for a first occurence. If none, just return a
+    // Check for a first occurrence. If none, just return a
     // copy of the original.
     char_pos = orig_str.find_first_of(escape_chars, prev_pos);
     if (char_pos == std::string::npos) {

src/lib/util/csv_file.h

@@ -117,7 +117,7 @@ public:
     /// values. Escaped characters embedded using the following format:
     ///
     /// This function fetches the value at the given index and passes it
-    /// into CSVRow::unesacpeCharacters which replaces any escaped special
+    /// into CSVRow::unescapeCharacters which replaces any escaped special
     /// characters with their unescaped form.
     ///
     /// @param at Index of the value in the container. The values are indexed
@@ -202,7 +202,7 @@ public:
     /// @brief Replaces the value at the specified index with a value that has
     /// had special characters escaped
     ///
-    /// This function first calls @c CSVRow::esacpeCharacters to replace
+    /// This function first calls @c CSVRow::escapeCharacters to replace
     /// special characters with their escaped form.  It then sets the value
     /// to be rendered using @c CSVRow::render function.
     ///

src/lib/util/tests/csv_file_unittest.cc

@@ -16,7 +16,7 @@ namespace {
 
 using namespace isc::util;
 
-// This test exercizes escaping and unescaping of characters.
+// This test exercises escaping and unescaping of characters.
 TEST(CSVRowTest, escapeUnescape) {
     std::string orig(",FO^O\\,B?,AR,");