InitSystem: add new module

Fix #974

src/modules/initsystem/initsystem.c

@@ -0,0 +1,134 @@
+#include "common/printing.h"
+#include "common/jsonconfig.h"
+#include "detection/initsystem/initsystem.h"
+#include "modules/initsystem/initsystem.h"
+#include "util/stringUtils.h"
+
+#define FF_INITSYSTEM_NUM_FORMAT_ARGS 3
+#define FF_INITSYSTEM_DISPLAY_NAME "Init System"
+
+void ffPrintInitSystem(FFInitSystemOptions* options)
+{
+    FFInitSystemResult result = {
+        .exe = ffStrbufCreate(),
+        .name = ffStrbufCreate(),
+        .pid = 1,
+    };
+
+    const char* error = ffDetectInitSystem(&result);
+
+    if(error)
+    {
+        ffPrintError(FF_INITSYSTEM_DISPLAY_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, "%s", error);
+        goto exit;
+    }
+
+    if(options->moduleArgs.outputFormat.length == 0)
+    {
+        ffPrintLogoAndKey(FF_INITSYSTEM_DISPLAY_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT);
+        ffStrbufPutTo(&result.name, stdout);
+    }
+    else
+    {
+        FF_PRINT_FORMAT_CHECKED(FF_INITSYSTEM_DISPLAY_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, FF_INITSYSTEM_NUM_FORMAT_ARGS, ((FFformatarg[]) {
+            {FF_FORMAT_ARG_TYPE_STRBUF, &result.name, "name"},
+            {FF_FORMAT_ARG_TYPE_STRBUF, &result.exe, "exe"},
+            {FF_FORMAT_ARG_TYPE_UINT, &result.pid, "pid"},
+        }));
+    }
+
+exit:
+    ffStrbufDestroy(&result.name);
+    ffStrbufDestroy(&result.exe);
+}
+
+bool ffParseInitSystemCommandOptions(FFInitSystemOptions* options, const char* key, const char* value)
+{
+    const char* subKey = ffOptionTestPrefix(key, FF_INITSYSTEM_MODULE_NAME);
+    if (!subKey) return false;
+    if (ffOptionParseModuleArgs(key, subKey, value, &options->moduleArgs))
+        return true;
+
+    return false;
+}
+
+void ffParseInitSystemJsonObject(FFInitSystemOptions* options, yyjson_val* module)
+{
+    yyjson_val *key_, *val;
+    size_t idx, max;
+    yyjson_obj_foreach(module, idx, max, key_, val)
+    {
+        const char* key = yyjson_get_str(key_);
+        if(ffStrEqualsIgnCase(key, "type"))
+            continue;
+
+        if (ffJsonConfigParseModuleArgs(key, val, &options->moduleArgs))
+            continue;
+
+        ffPrintError(FF_INITSYSTEM_DISPLAY_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, "Unknown JSON key %s", key);
+    }
+}
+
+void ffGenerateInitSystemJsonConfig(FFInitSystemOptions* options, yyjson_mut_doc* doc, yyjson_mut_val* module)
+{
+    __attribute__((__cleanup__(ffDestroyInitSystemOptions))) FFInitSystemOptions defaultOptions;
+    ffInitInitSystemOptions(&defaultOptions);
+
+    ffJsonConfigGenerateModuleArgsConfig(doc, module, &defaultOptions.moduleArgs, &options->moduleArgs);
+}
+
+void ffGenerateInitSystemJsonResult(FF_MAYBE_UNUSED FFInitSystemOptions* options, yyjson_mut_doc* doc, yyjson_mut_val* module)
+{
+    FFInitSystemResult result = {
+        .exe = ffStrbufCreate(),
+        .name = ffStrbufCreate(),
+        .pid = 1,
+    };
+
+    const char* error = ffDetectInitSystem(&result);
+
+    if (error)
+    {
+        yyjson_mut_obj_add_str(doc, module, "error", error);
+        goto exit;
+    }
+
+    yyjson_mut_val* obj = yyjson_mut_obj_add_obj(doc, module, "result");
+    yyjson_mut_obj_add_strbuf(doc, obj, "name", &result.name);
+    yyjson_mut_obj_add_strbuf(doc, obj, "exe", &result.exe);
+    yyjson_mut_obj_add_uint(doc, obj, "pid", result.pid);
+
+exit:
+    ffStrbufDestroy(&result.name);
+    ffStrbufDestroy(&result.exe);
+}
+
+void ffPrintInitSystemHelpFormat(void)
+{
+    FF_PRINT_MODULE_FORMAT_HELP_CHECKED(FF_INITSYSTEM_DISPLAY_NAME, "{1}", FF_INITSYSTEM_NUM_FORMAT_ARGS, ((const char* []) {
+        "init system name - name",
+        "init system exe path - exe",
+        "init system pid - pid",
+    }));
+}
+
+void ffInitInitSystemOptions(FFInitSystemOptions* options)
+{
+    ffOptionInitModuleBaseInfo(
+        &options->moduleInfo,
+        FF_INITSYSTEM_MODULE_NAME,
+        "Print init system (pid 1) name",
+        ffParseInitSystemCommandOptions,
+        ffParseInitSystemJsonObject,
+        ffPrintInitSystem,
+        ffGenerateInitSystemJsonResult,
+        ffPrintInitSystemHelpFormat,
+        ffGenerateInitSystemJsonConfig
+    );
+    ffOptionInitModuleArg(&options->moduleArgs);
+}
+
+void ffDestroyInitSystemOptions(FFInitSystemOptions* options)
+{
+    ffOptionDestroyModuleArg(&options->moduleArgs);
+}

src/modules/initsystem/initsystem.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include "fastfetch.h"
+
+#define FF_INITSYSTEM_MODULE_NAME "InitSystem"
+
+void ffPrintInitSystem(FFInitSystemOptions* options);
+void ffInitInitSystemOptions(FFInitSystemOptions* options);
+void ffDestroyInitSystemOptions(FFInitSystemOptions* options);

src/modules/initsystem/option.h

@@ -0,0 +1,11 @@
+#pragma once
+
+// This file will be included in "fastfetch.h", do NOT put unnecessary things here
+
+#include "common/option.h"
+
+typedef struct FFInitSystemOptions
+{
+    FFModuleBaseInfo moduleInfo;
+    FFModuleArgs moduleArgs;
+} FFInitSystemOptions;

src/modules/modules.h

@@ -28,6 +28,7 @@
 #include "modules/gpu/gpu.h"
 #include "modules/host/host.h"
 #include "modules/icons/icons.h"
+#include "modules/initsystem/initsystem.h"
 #include "modules/kernel/kernel.h"
 #include "modules/lm/lm.h"
 #include "modules/loadavg/loadavg.h"

src/modules/options.h

@@ -28,6 +28,7 @@
 #include "modules/gamepad/option.h"
 #include "modules/gpu/option.h"
 #include "modules/icons/option.h"
+#include "modules/initsystem/option.h"
 #include "modules/kernel/option.h"
 #include "modules/loadavg/option.h"
 #include "modules/locale/option.h"