vbatts/llama.cpp
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server: fix format_chat

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This commit is contained in:
ngxson 2024-02-20 11:07:38 +01:00
parent b19f46a27e
commit c53b34d457
2 changed files with 7 additions and 8 deletions
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1
examples/server/server.cpp
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@ -2390,7 +2390,6 @@ static void server_params_parse(int argc, char **argv, server_params &sparams,
invalid_param = true;
break;
}
std::string value(argv[i]);
if (!verify_custom_template(argv[i])) {
fprintf(stderr, "error: the supplied chat template is not supported: %s\n", argv[i]);
fprintf(stderr, "note: llama.cpp does not use jinja parser, we only support commonly used templates\n");

14
examples/server/utils.hpp
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@ -168,7 +168,7 @@ static T json_value(const json &body, const std::string &key, const T &default_v
}
// Check if the template supplied via "--chat-template" is supported or not. Returns true if it's valid
inline bool verify_custom_template(std::string tmpl) {
inline bool verify_custom_template(const std::string & tmpl) {
llama_chat_message chat[] = {{"user", "test"}};
std::vector<char> buf(1);
int res = llama_chat_apply_template(nullptr, tmpl.c_str(), chat, 1, true, buf.data(), buf.size());
@ -176,7 +176,7 @@ inline bool verify_custom_template(std::string tmpl) {
}
// Format given chat. If tmpl is empty, we take the template from model metadata
inline std::string format_chat(const struct llama_model * model, const std::string tmpl, std::vector<json> messages)
inline std::string format_chat(const struct llama_model * model, const std::string & tmpl, const std::vector<json> & messages)
{
size_t alloc_size = 0;
// vector holding all allocated string to be passed to llama_chat_apply_template
@ -185,11 +185,11 @@ inline std::string format_chat(const struct llama_model * model, const std::stri
for (size_t i = 0; i < messages.size(); ++i) {
auto &curr_msg = messages[i];
str[i] = json_value(curr_msg, "role", std::string(""));
str[i + 1] = json_value(curr_msg, "content", std::string(""));
alloc_size += str[i + 1].length();
chat[i].role = str[i].c_str();
chat[i].content = str[i + 1].c_str();
str[i*2 + 0] = json_value(curr_msg, "role", std::string(""));
str[i*2 + 1] = json_value(curr_msg, "content", std::string(""));
alloc_size += str[i*2 + 1].length();
chat[i].role = str[i*2 + 0].c_str();
chat[i].content = str[i*2 + 1].c_str();
}
const char * ptr_tmpl = tmpl.empty() ? nullptr : tmpl.c_str();