Create jsonproc tool

Add custom function hooks to jsonproc

Add jsonproc to build_tools.sh

Newer g++

tools/jsonproc/.gitignore

@@ -0,0 +1 @@
+jsonproc

tools/jsonproc/Makefile

@@ -0,0 +1,17 @@
+CXX := g++
+
+CXXFLAGS := -Wall -std=c++11 -O2
+
+INCLUDES := -I .
+
+SRCS := jsonproc.cpp
+
+HEADERS := jsonproc.h inja.hpp nlohmann/json.hpp
+
+.PHONY: clean
+
+jsonproc: $(SRCS) $(HEADERS)
+	$(CXX) $(CXXFLAGS) $(INCLUDES) $(SRCS) -o $@ $(LDFLAGS)
+
+clean:
+	$(RM) jsonproc jsonproc.exe

tools/jsonproc/jsonproc.cpp

@@ -0,0 +1,91 @@
+// jsonproc.cpp
+
+#include "jsonproc.h"
+
+#include <map>
+
+#include <string>
+using std::string;
+
+#include <inja.hpp>
+using namespace inja;
+using json = nlohmann::json;
+
+std::map<string, string> customVars;
+
+void set_custom_var(string key, string value)
+{
+    customVars[key] = value;
+}
+
+string get_custom_var(string key)
+{
+    return customVars[key];
+}
+
+int main(int argc, char *argv[])
+{
+    if (argc != 4)
+        FATAL_ERROR("USAGE: jsonproc <json-filepath> <template-filepath> <output-filepath>\n");
+
+    string jsonfilepath = argv[1];
+    string templateFilepath = argv[2];
+    string outputFilepath = argv[3];
+
+    Environment env;
+
+    // Add custom command callbacks.
+    env.add_callback("doNotModifyHeader", 0, [jsonfilepath, templateFilepath](Arguments& args) {
+        return "//\n// DO NOT MODIFY THIS FILE! IT IS AUTO-GENERATED FROM " + jsonfilepath +" and Inja template " + templateFilepath + "\n//\n";
+    });
+
+    env.add_callback("setVar", 2, [=](Arguments& args) {
+        string key = args.at(0)->get<string>();
+        string value = args.at(1)->get<string>();
+        set_custom_var(key, value);
+        return "";
+    });
+
+    env.add_callback("getVar", 1, [=](Arguments& args) {
+        string key = args.at(0)->get<string>();
+        return get_custom_var(key);
+    });
+
+    env.add_callback("concat", 2, [](Arguments& args) {
+        string first = args.at(0)->get<string>();
+        string second = args.at(1)->get<string>();
+        return first + second;
+    });
+
+    env.add_callback("removePrefix", 2, [](Arguments& args) {
+        string rawValue = args.at(0)->get<string>();
+        string prefix = args.at(1)->get<string>();
+        string::size_type i = rawValue.find(prefix);
+        if (i != 0)
+            return rawValue;
+
+        return rawValue.erase(0, prefix.length());
+    });
+
+    // Add custom command callbacks.
+    env.add_callback("removeSuffix", 2, [](Arguments& args) {
+        string rawValue = args.at(0)->get<string>();
+        string suffix = args.at(1)->get<string>();
+        string::size_type i = rawValue.rfind(suffix);
+        if (i == string::npos)
+            return rawValue;
+
+        return rawValue.substr(0, i);
+    });
+
+    try
+    {
+        env.write_with_json_file(templateFilepath, jsonfilepath, outputFilepath);
+    }
+    catch (const std::exception& e)
+    {
+        FATAL_ERROR("JSONPROC_ERROR: %s\n", e.what());
+    }
+
+    return 0;
+}

tools/jsonproc/jsonproc.h

@@ -0,0 +1,32 @@
+// jsonproc.h
+
+#ifndef JSONPROC_H
+#define JSONPROC_H
+
+#include <cstdlib>
+#include <cstdio>
+using std::fprintf; using std::exit;
+
+#include <cstdlib>
+
+#ifdef _MSC_VER
+
+#define FATAL_ERROR(format, ...)          \
+do                                        \
+{                                         \
+    fprintf(stderr, format, __VA_ARGS__); \
+    exit(1);                              \
+} while (0)
+
+#else
+
+#define FATAL_ERROR(format, ...)            \
+do                                          \
+{                                           \
+    fprintf(stderr, format, ##__VA_ARGS__); \
+    exit(1);                                \
+} while (0)
+
+#endif // _MSC_VER
+
+#endif // JSONPROC_H