yanyiwu · yanyiwu · Jun 9, 2026 · Jun 8, 2026
diff --git a/.github/workflows/bazel.yml b/.github/workflows/bazel.yml
@@ -11,8 +11,6 @@ jobs:
     steps:
       - name: Check out repository code
         uses: actions/checkout@v6
-        with:
-          submodules: recursive
 
       - name: Test
         run: npx --yes @bazel/bazelisk test //:bazel_smoke_test
diff --git a/.github/workflows/cmake-arm64.yml b/.github/workflows/cmake-arm64.yml
@@ -18,8 +18,6 @@ jobs:
     steps:
       - name: Check out repository code
         uses: actions/checkout@v6
-        with:
-            submodules: recursive
 
       - name: Configure CMake
         # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
@@ -37,4 +35,3 @@ jobs:
         # Execute tests defined by the CMake configuration.  
         # See https://cmake.org/help/latest/manual/ctest.1.html for more detail
         run: ctest -C ${{env.BUILD_TYPE}} --verbose
-
diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
@@ -30,8 +30,6 @@ jobs:
     steps:
       - name: Check out repository code
         uses: actions/checkout@v6
-        with:
-            submodules: recursive
 
       - name: Configure CMake
         # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.

diff --git a/.gitmodules b/.gitmodules
diff --git a/BUILD.bazel b/BUILD.bazel
@@ -2,12 +2,6 @@ load("@rules_cc//cc:defs.bzl", "cc_library", "cc_test")
 
 package(default_visibility = ["//visibility:public"])
 
-cc_library(
-    name = "limonp",
-    hdrs = glob(["deps/limonp/include/limonp/**/*.hpp"]),
-    includes = ["deps/limonp/include"],
-)
-
 filegroup(
     name = "dict",
     srcs = glob(["dict/**"]),
@@ -17,7 +11,6 @@ cc_library(
     name = "cppjieba",
     hdrs = glob(["include/cppjieba/**/*.hpp"]),
     includes = ["include"],
-    deps = [":limonp"],
 )
 
 cc_test(

diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## Unreleased
+
++ deps: remove the limonp submodule dependency
+
 ## v5.6.7
 
 + docs: document dictionary file formats

diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -1,14 +1,7 @@
 CMAKE_MINIMUM_REQUIRED (VERSION 3.10)
 PROJECT(CPPJIEBA)
 
-find_package(limonp)
-if(limonp_FOUND)
-    get_target_property(LIMONP_INCLUDE_DIR limonp::limonp INTERFACE_INCLUDE_DIRECTORIES)
-else()
-    set(LIMONP_INCLUDE_DIR "${PROJECT_SOURCE_DIR}/deps/limonp/include")
-endif()
-INCLUDE_DIRECTORIES("${LIMONP_INCLUDE_DIR}"
-  ${PROJECT_SOURCE_DIR}/include)
+INCLUDE_DIRECTORIES(${PROJECT_SOURCE_DIR}/include)
 
 if(NOT DEFINED CMAKE_CXX_STANDARD)
     set(CMAKE_CXX_STANDARD 11)
@@ -31,7 +24,6 @@ if(NOT TARGET cppjieba)
   add_library(cppjieba INTERFACE)
   target_include_directories(cppjieba INTERFACE
     ${PROJECT_SOURCE_DIR}/include
-    ${PROJECT_SOURCE_DIR}/deps/limonp/include
   )
 endif()
 

diff --git a/README.md b/README.md
@@ -33,8 +33,6 @@ CppJieba是"结巴(Jieba)"中文分词的C++版本
 ```sh
 git clone https://github.com/yanyiwu/cppjieba.git
 cd cppjieba
-git submodule init
-git submodule update
 mkdir build
 cd build
 cmake ..

diff --git a/deps/limonp b/deps/limonp
diff --git a/include/cppjieba/DictTrie.hpp b/include/cppjieba/DictTrie.hpp
@@ -13,8 +13,7 @@
 #include <string>
 #include <unordered_map>
 #include <unordered_set>
-#include "limonp/StringUtil.hpp"
-#include "limonp/Logging.hpp"
+#include "Utils.hpp"
 #include "UnicodeFile.hpp"
 #include "Unicode.hpp"
 #include "Trie.hpp"
@@ -113,7 +112,7 @@ class DictTrie {
   void InserUserDictNode(const std::string& line) {
     std::vector<std::string> buf;
     DictUnit node_info;
-    limonp::Split(line, buf, " ");
+    Split(line, buf, " ");
     if(buf.size() == 1){
           MakeNodeInfo(node_info,
                 buf[0],
@@ -150,7 +149,7 @@ class DictTrie {
   }
 
   void LoadUserDict(const std::string& filePaths) {
-    std::vector<std::string> files = limonp::Split(filePaths, "|;");
+    std::vector<std::string> files = Split(filePaths, "|;");
     for (size_t i = 0; i < files.size(); i++) {
       std::ifstream ifs;
       OpenInputFile(ifs, files[i]);
@@ -244,7 +243,7 @@ class DictTrie {
     std::string line;
     std::vector<std::string> buf;
     while (getline(ifs, line)) {
-      limonp::Split(line, buf, " ");
+      Split(line, buf, " ");
       XCHECK(buf.size() == DICT_COLUMN_NUM) << "split result illegal, line:" << line;
       DictUnit node_info;
       XCHECK(DecodeUTF8RunesInString(buf[0], node_info.word)) << "UTF-8 decode failed for dict word: " << buf[0];

diff --git a/include/cppjieba/FullSegment.hpp b/include/cppjieba/FullSegment.hpp
@@ -4,7 +4,7 @@
 #include <algorithm>
 #include <set>
 #include <cassert>
-#include "limonp/Logging.hpp"
+#include "Utils.hpp"
 #include "DictTrie.hpp"
 #include "SegmentBase.hpp"
 #include "Unicode.hpp"

diff --git a/include/cppjieba/HMMModel.hpp b/include/cppjieba/HMMModel.hpp
@@ -2,12 +2,11 @@
 #define CPPJIEBA_HMMMODEL_H
 
 #include "UnicodeFile.hpp"
-#include "limonp/StringUtil.hpp"
+#include "Utils.hpp"
 #include "Trie.hpp"
 
 namespace cppjieba {
 
-using namespace limonp;
 typedef unordered_map<Rune, double> EmitProbMap;
 
 struct HMMModel {

diff --git a/include/cppjieba/KeywordExtractor.hpp b/include/cppjieba/KeywordExtractor.hpp
@@ -2,6 +2,7 @@
 #define CPPJIEBA_KEYWORD_EXTRACTOR_H
 
 #include <algorithm>
+#include <map>
 #include <unordered_map>
 #include <unordered_set>
 #include "MixSegment.hpp"
@@ -106,7 +107,7 @@ class KeywordExtractor {
         XLOG(ERROR) << "lineno: " << lineno << " empty. skipped.";
         continue;
       }
-      limonp::Split(line, buf, " ");
+      Split(line, buf, " ");
       if (buf.size() != 2) {
         XLOG(ERROR) << "line: " << line << ", lineno: " << lineno << " empty. skipped.";
         continue;

diff --git a/include/cppjieba/MPSegment.hpp b/include/cppjieba/MPSegment.hpp
@@ -4,7 +4,7 @@
 #include <algorithm>
 #include <set>
 #include <cassert>
-#include "limonp/Logging.hpp"
+#include "Utils.hpp"
 #include "DictTrie.hpp"
 #include "SegmentTagged.hpp"
 #include "PosTagger.hpp"

diff --git a/include/cppjieba/MixSegment.hpp b/include/cppjieba/MixSegment.hpp
@@ -4,7 +4,6 @@
 #include <cassert>
 #include "MPSegment.hpp"
 #include "HMMSegment.hpp"
-#include "limonp/StringUtil.hpp"
 #include "PosTagger.hpp"
 
 namespace cppjieba {

diff --git a/include/cppjieba/PosTagger.hpp b/include/cppjieba/PosTagger.hpp
@@ -1,12 +1,11 @@
 #ifndef CPPJIEBA_POS_TAGGING_H
 #define CPPJIEBA_POS_TAGGING_H
 
-#include "limonp/StringUtil.hpp"
+#include "Utils.hpp"
 #include "SegmentTagged.hpp"
 #include "DictTrie.hpp"
 
 namespace cppjieba {
-using namespace limonp;
 
 static const char* const POS_M = "m";
 static const char* const POS_ENG = "eng";

diff --git a/include/cppjieba/PreFilter.hpp b/include/cppjieba/PreFilter.hpp
@@ -2,7 +2,7 @@
 #define CPPJIEBA_PRE_FILTER_H
 
 #include "Trie.hpp"
-#include "limonp/Logging.hpp"
+#include "Utils.hpp"
 
 namespace cppjieba {
 

diff --git a/include/cppjieba/QuerySegment.hpp b/include/cppjieba/QuerySegment.hpp
@@ -4,7 +4,7 @@
 #include <algorithm>
 #include <set>
 #include <cassert>
-#include "limonp/Logging.hpp"
+#include "Utils.hpp"
 #include "DictTrie.hpp"
 #include "SegmentBase.hpp"
 #include "FullSegment.hpp"

diff --git a/include/cppjieba/SegmentBase.hpp b/include/cppjieba/SegmentBase.hpp
@@ -1,7 +1,7 @@
 #ifndef CPPJIEBA_SEGMENTBASE_H
 #define CPPJIEBA_SEGMENTBASE_H
 
-#include "limonp/Logging.hpp"
+#include "Utils.hpp"
 #include "PreFilter.hpp"
 #include <cassert>
 
@@ -10,8 +10,6 @@ namespace cppjieba {
 
 const char* const SPECIAL_SEPARATORS = " \t\n\xEF\xBC\x8C\xE3\x80\x82";
 
-using namespace limonp;
-
 class SegmentBase {
  public:
   SegmentBase() {

diff --git a/include/cppjieba/TextRankExtractor.hpp b/include/cppjieba/TextRankExtractor.hpp
@@ -1,13 +1,13 @@
 #ifndef CPPJIEBA_TEXTRANK_EXTRACTOR_H
-#define CPPJIEBA_TEXTRANK_EXTRACTOR_H
-
+#define CPPJIEBA_TEXTRANK_EXTRACTOR_H
+
 #include <cmath>
+#include <map>
 #include "Jieba.hpp"
 #include "UnicodeFile.hpp"
-
-namespace cppjieba {
-  using namespace limonp;
-  using namespace std;
+
+namespace cppjieba {
+  using namespace std;
 
   class TextRankExtractor {
   public:

diff --git a/include/cppjieba/Trie.hpp b/include/cppjieba/Trie.hpp
@@ -3,7 +3,7 @@
 
 #include <vector>
 #include <queue>
-#include "limonp/StdExtension.hpp"
+#include "Utils.hpp"
 #include "Unicode.hpp"
 
 namespace cppjieba {
@@ -28,7 +28,7 @@ struct DictUnit {
 struct Dag {
   RuneStr runestr;
   // [offset, nexts.first]
-  limonp::LocalVector<pair<size_t, const DictUnit*> > nexts;
+  LocalVector<pair<size_t, const DictUnit*> > nexts;
   const DictUnit * pInfo;
   double weight;
   size_t nextPos; // TODO

diff --git a/include/cppjieba/Unicode.hpp b/include/cppjieba/Unicode.hpp
@@ -7,7 +7,7 @@
 #include <string>
 #include <vector>
 #include <ostream>
-#include "limonp/LocalVector.hpp"
+#include "Utils.hpp"
 
 namespace cppjieba {
 
@@ -53,7 +53,7 @@ inline std::ostream& operator << (std::ostream& os, const RuneStr& r) {
   return os << "{\"rune\": \"" << r.rune << "\", \"offset\": " << r.offset << ", \"len\": " << r.len << "}";
 }
 
-typedef limonp::LocalVector<Rune> Unicode;
+typedef LocalVector<Rune> Unicode;
 typedef std::vector<RuneStr> RuneStrArray;
 
 // [left, right]