2 files changed, 147 insertions, 0 deletions
diff --git a/llama.cpp/examples/gen-docs/CMakeLists.txt b/llama.cpp/examples/gen-docs/CMakeLists.txt
new file mode 100644
index 0000000..25de0af
--- /dev/null
+++ b/llama.cpp/examples/gen-docs/CMakeLists.txt
@@ -0,0 +1,5 @@
+set(TARGET llama-gen-docs)
+add_executable(${TARGET} gen-docs.cpp)
+install(TARGETS ${TARGET} RUNTIME)
+target_link_libraries(${TARGET} PRIVATE common llama ${CMAKE_THREAD_LIBS_INIT})
+target_compile_features(${TARGET} PRIVATE cxx_std_17)
diff --git a/llama.cpp/examples/gen-docs/gen-docs.cpp b/llama.cpp/examples/gen-docs/gen-docs.cpp
new file mode 100644
index 0000000..0aa33e8
--- /dev/null
+++ b/llama.cpp/examples/gen-docs/gen-docs.cpp
@@ -0,0 +1,142 @@
+#include "arg.h"
+#include "common.h"
+
+#include <fstream>
+#include <sstream>
+#include <string>
+
+// Export usage message (-h) to markdown format
+// Automatically update the markdown docs
+
+#define HELP_START_MARKER "<!-- HELP_START -->"
+#define HELP_END_MARKER   "<!-- HELP_END -->"
+#define NOTE_MESSAGE      "<!-- IMPORTANT: The list below is auto-generated by llama-gen-docs; do NOT modify it manually -->"
+
+struct md_file {
+    llama_example ex;
+    std::string fname;
+    std::string specific_section_header;
+};
+
+std::vector<md_file> md_files = {
+    {LLAMA_EXAMPLE_CLI,        "tools/cli/README.md",        "CLI-specific params"},
+    {LLAMA_EXAMPLE_COMPLETION, "tools/completion/README.md", "Completion-specific params"},
+    {LLAMA_EXAMPLE_SERVER,     "tools/server/README.md",     "Server-specific params"},
+};
+
+static void write_table_header(std::ostringstream & ss) {
+    ss << "| Argument | Explanation |\n";
+    ss << "| -------- | ----------- |\n";
+}
+
+static void write_table_entry(std::ostringstream & ss, const common_arg & opt) {
+    ss << "| `";
+    // args
+    auto all_args = opt.get_args();
+    for (const auto & arg : all_args) {
+    if (arg == all_args.front()) {
+            ss << arg;
+            if (all_args.size() > 1) ss << ", ";
+        } else {
+            ss << arg << (arg != all_args.back() ? ", " : "");
+        }
+    }
+    // value hint
+    if (opt.value_hint) {
+        std::string md_value_hint(opt.value_hint);
+        string_replace_all(md_value_hint, "|", "\\|");
+        ss << " " << md_value_hint;
+    }
+    if (opt.value_hint_2) {
+        std::string md_value_hint_2(opt.value_hint_2);
+        string_replace_all(md_value_hint_2, "|", "\\|");
+        ss << " " << md_value_hint_2;
+    }
+    // help text
+    std::string md_help(opt.help);
+    md_help = string_strip(md_help);
+    string_replace_all(md_help, "\n", "<br/>");
+    string_replace_all(md_help, "|", "\\|");
+    ss << "` | " << md_help << " |\n";
+}
+
+static void write_table(std::ostringstream & ss, std::vector<common_arg *> & opts) {
+    write_table_header(ss);
+    for (const auto & opt : opts) {
+        write_table_entry(ss, *opt);
+    }
+}
+
+static void write_help(std::ostringstream & ss, const md_file & md) {
+    common_params params;
+    auto ctx_arg = common_params_parser_init(params, md.ex);
+
+    std::vector<common_arg *> common_options;
+    std::vector<common_arg *> sparam_options;
+    std::vector<common_arg *> specific_options;
+    for (auto & opt : ctx_arg.options) {
+        // in case multiple LLAMA_EXAMPLE_* are set, we prioritize the LLAMA_EXAMPLE_* matching current example
+        if (opt.is_sparam) {
+            sparam_options.push_back(&opt);
+        } else if (opt.in_example(ctx_arg.ex)) {
+            specific_options.push_back(&opt);
+        } else {
+            common_options.push_back(&opt);
+        }
+    }
+
+    ss << HELP_START_MARKER << "\n\n";
+
+    ss << NOTE_MESSAGE << "\n\n";
+
+    ss << "### Common params\n\n";
+    write_table(ss, common_options);
+    ss << "\n\n### Sampling params\n\n";
+    write_table(ss, sparam_options);
+    ss << "\n\n### " << md.specific_section_header << "\n\n";
+    write_table(ss, specific_options);
+
+    ss << "\n" << HELP_END_MARKER;
+}
+
+int main(int, char **) {
+    for (const auto & md : md_files) {
+        std::ifstream infile(md.fname);
+        if (!infile.is_open()) {
+            fprintf(stderr, "failed to open file '%s' for reading\n", md.fname.c_str());
+            return 1;
+        }
+
+        std::ostringstream ss;
+        ss << infile.rdbuf();
+        infile.close();
+
+        std::string content = ss.str();
+
+        size_t help_start = content.find(HELP_START_MARKER);
+        size_t help_end   = content.find(HELP_END_MARKER);
+
+        if (help_start == std::string::npos || help_end == std::string::npos || help_end <= help_start) {
+            fprintf(stderr, "failed to find help markers in file '%s'\n", md.fname.c_str());
+            return 1;
+        }
+
+        std::ostringstream new_help_ss;
+        write_help(new_help_ss, md);
+        std::string new_help = new_help_ss.str();
+
+        content = content.substr(0, help_start) + new_help + content.substr(help_end + strlen(HELP_END_MARKER));
+
+        std::ofstream outfile(md.fname);
+        if (!outfile.is_open()) {
+            fprintf(stderr, "failed to open file '%s' for writing\n", md.fname.c_str());
+            return 1;
+        }
+        outfile << content;
+        outfile.close();
+
+        printf("Updated help in '%s'\n", md.fname.c_str());
+    }
+
+    return 0;
+}