fix bugs (#870)

Co-authored-by: firecoperana <firecoperana>

Author: firecoperana

examples/server/server.cpp

@@ -788,7 +788,7 @@ struct server_slot {
 
                 pos = text.find(word, from_pos);
             } else {
-                pos = string_find_partial_stop(word, text);
+                pos = string_find_partial_stop(text, word);
             }
 
             if (pos != std::string::npos && (stop_pos == std::string::npos || pos < stop_pos)) {
@@ -1960,31 +1960,28 @@ struct server_context {
             size_t pos = std::min(slot.n_sent_text, slot.generated_text.size());
 
             const std::string str_test = slot.generated_text.substr(pos);
-            bool is_stop_full = false;
+            bool send_text = true;
 
             size_t stop_pos = slot.find_stopping_strings(str_test, token_str.size(), true);
             if (stop_pos != std::string::npos) {
-                is_stop_full = true;
                 slot.generated_text.erase(
                     slot.generated_text.begin() + pos + stop_pos,
                     slot.generated_text.end());
-                // Update n_sent_text to not exceed the new generated_text size
-                slot.n_sent_text = std::min(slot.n_sent_text, slot.generated_text.size());
-                pos = slot.n_sent_text;
-            } else {
-                is_stop_full = false;
-                stop_pos = slot.find_stopping_strings(str_test, token_str.size(), false);
+                pos = std::min(slot.n_sent_text, slot.generated_text.size());
+            }
+            else if (slot.has_next_token && !llama_token_is_eog(model, result.tok)) {
+                stop_pos = slot.find_stopping_strings(str_test, token_str.size(), false);         
+                send_text = stop_pos == std::string::npos;
             }
 
             // check if there is any token to predict
-            if (stop_pos == std::string::npos || (!slot.has_next_token && !is_stop_full && stop_pos > 0)) {
+            if (send_text) {
                 // no send the stop word in the response
                 result.text_to_send = slot.generated_text.substr(pos, std::string::npos);
                 slot.n_sent_text += result.text_to_send.size();
                 // add the token to slot queue and cache
-            } else if (stop_pos != std::string::npos) {
-                // Handle partial stop - update n_sent_text to the end of the current text
-                slot.n_sent_text = slot.generated_text.size();
+            } else {
+                result.text_to_send = "";
             }
 
             slot.add_token_string(result);