Kernel: support JSON config

src/modules/kernel/kernel.c

@@ -0,0 +1,83 @@
+#include "fastfetch.h"
+#include "common/printing.h"
+#include "modules/kernel/kernel.h"
+
+#define FF_KERNEL_MODULE_NAME "Kernel"
+#define FF_KERNEL_NUM_FORMAT_ARGS 4
+
+void ffPrintKernel(FFinstance* instance, FFKernelOptions* options)
+{
+    if(options->moduleArgs.outputFormat.length == 0)
+    {
+        ffPrintLogoAndKey(instance, FF_KERNEL_MODULE_NAME, 0, &options->moduleArgs.key);
+        ffStrbufWriteTo(&instance->state.platform.systemRelease, stdout);
+
+        #ifdef _WIN32
+            if(instance->state.platform.systemVersion.length > 0)
+                printf(" (%s)", instance->state.platform.systemVersion.chars);
+        #endif
+
+        putchar('\n');
+    }
+    else
+    {
+        ffPrintFormat(instance, FF_KERNEL_MODULE_NAME, 0, &options->moduleArgs, FF_KERNEL_NUM_FORMAT_ARGS, (FFformatarg[]){
+            {FF_FORMAT_ARG_TYPE_STRBUF, &instance->state.platform.systemName},
+            {FF_FORMAT_ARG_TYPE_STRBUF, &instance->state.platform.systemRelease},
+            {FF_FORMAT_ARG_TYPE_STRBUF, &instance->state.platform.systemVersion},
+            {FF_FORMAT_ARG_TYPE_STRBUF, &instance->state.platform.systemArchitecture}
+        });
+    }
+}
+
+void ffInitKernelOptions(FFKernelOptions* options)
+{
+    options->moduleName = FF_KERNEL_MODULE_NAME;
+    ffOptionInitModuleArg(&options->moduleArgs);
+}
+
+bool ffParseKernelCommandOptions(FFKernelOptions* options, const char* key, const char* value)
+{
+    const char* subKey = ffOptionTestPrefix(key, FF_KERNEL_MODULE_NAME);
+    if (!subKey) return false;
+    if (ffOptionParseModuleArgs(key, subKey, value, &options->moduleArgs))
+        return true;
+
+    return false;
+}
+
+void ffDestroyKernelOptions(FFKernelOptions* options)
+{
+    ffOptionDestroyModuleArg(&options->moduleArgs);
+}
+
+#ifdef FF_HAVE_JSONC
+bool ffParseKernelJsonObject(FFinstance* instance, const char* type, JSONCData* data, json_object* module)
+{
+    if (strcasecmp(type, FF_KERNEL_MODULE_NAME) != 0)
+        return false;
+
+    FFKernelOptions __attribute__((__cleanup__(ffDestroyKernelOptions))) options;
+    ffInitKernelOptions(&options);
+
+    if (module)
+    {
+        struct lh_entry* entry;
+        lh_foreach(data->ffjson_object_get_object(module), entry)
+        {
+            const char* key = (const char *)lh_entry_k(entry);
+            if (strcasecmp(key, "type") == 0)
+                continue;
+            json_object* val = (struct json_object *)lh_entry_v(entry);
+
+            if (ffJsonConfigParseModuleArgs(data, key, val, &options.moduleArgs))
+                continue;
+
+            ffPrintError(instance, FF_KERNEL_MODULE_NAME, 0, &options.moduleArgs, "Unknown JSON key %s", key);
+        }
+    }
+
+    ffPrintKernel(instance, &options);
+    return true;
+}
+#endif

src/modules/kernel/kernel.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#include "fastfetch.h"
+#include "modules/kernel/option.h"
+
+void ffPrintKernel(FFinstance* instance, FFKernelOptions* options);
+void ffInitKernelOptions(FFKernelOptions* options);
+bool ffParseKernelCommandOptions(FFKernelOptions* options, const char* key, const char* value);
+void ffDestroyKernelOptions(FFKernelOptions* options);
+
+#ifdef FF_HAVE_JSONC
+#include "common/config.h"
+bool ffParseKernelJsonObject(FFinstance* instance, const char* type, JSONCData* data, json_object* module);
+#endif

src/modules/kernel/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 FFKernelOptions
+{
+    const char* moduleName;
+    FFModuleArgs moduleArgs;
+} FFKernelOptions;