Add the files

3 files changed, 224 insertions, 0 deletions

diff --git a/src/modules/swap/option.h b/src/modules/swap/option.h
new file mode 100644
index 0000000..860da9c
--- /dev/null
+++ b/src/modules/swap/option.h
@@ -0,0 +1,13 @@
+#pragma once
+
+#include "common/option.h"
+#include "common/percent.h"
+
+typedef struct FFSwapOptions {
+    FFModuleArgs moduleArgs;
+
+    FFPercentageModuleConfig percent;
+    bool separate;
+} FFSwapOptions;
+
+static_assert(sizeof(FFSwapOptions) <= FF_OPTION_MAX_SIZE, "FFSwapOptions size exceeds maximum allowed size");
diff --git a/src/modules/swap/swap.c b/src/modules/swap/swap.c
new file mode 100644
index 0000000..78af475
--- /dev/null
+++ b/src/modules/swap/swap.c
@@ -0,0 +1,200 @@
+#include "common/printing.h"
+#include "common/jsonconfig.h"
+#include "common/percent.h"
+#include "common/size.h"
+#include "common/strutil.h"
+#include "detection/swap/swap.h"
+#include "modules/swap/swap.h"
+
+void printSwap(FFSwapOptions* options, uint8_t index, uint32_t totalCount, FFSwapResult* storage) {
+    FF_STRBUF_AUTO_DESTROY key = ffStrbufCreate();
+
+    if (options->moduleArgs.key.length == 0) {
+        if (storage->name.length > 0) {
+            ffStrbufSetF(&key, "%s (%s)", FF_SWAP_MODULE_NAME, storage->name.chars);
+        } else {
+            ffStrbufSetS(&key, FF_SWAP_MODULE_NAME);
+        }
+    } else {
+        ffStrbufClear(&key);
+        FF_PARSE_FORMAT_STRING_CHECKED(&key, &options->moduleArgs.key, ((FFformatarg[]) {
+                                                                           FF_ARG(index, "index"),
+                                                                           FF_ARG(storage->name, "name"),
+                                                                           FF_ARG(options->moduleArgs.keyIcon, "icon"),
+                                                                       }));
+    }
+
+    FF_STRBUF_AUTO_DESTROY usedPretty = ffStrbufCreate();
+    ffSizeAppendNum(storage->bytesUsed, &usedPretty);
+
+    FF_STRBUF_AUTO_DESTROY totalPretty = ffStrbufCreate();
+    ffSizeAppendNum(storage->bytesTotal, &totalPretty);
+
+    double percentage = storage->bytesTotal == 0
+        ? 0
+        : (double) storage->bytesUsed / (double) storage->bytesTotal * 100.0;
+
+    FFPercentageTypeFlags percentType = options->percent.type == 0 ? instance.config.display.percentType : options->percent.type;
+    if (options->moduleArgs.outputFormat.length == 0) {
+        ffPrintLogoAndKey(key.chars, 0, &options->moduleArgs, FF_PRINT_TYPE_NO_CUSTOM_KEY);
+        FF_STRBUF_AUTO_DESTROY str = ffStrbufCreate();
+
+        if (storage->bytesTotal == 0) {
+            if (percentType & FF_PERCENTAGE_TYPE_BAR_BIT) {
+                ffPercentAppendBar(&str, 0, options->percent, &options->moduleArgs);
+                ffStrbufAppendC(&str, ' ');
+            }
+            if (!(percentType & FF_PERCENTAGE_TYPE_HIDE_OTHERS_BIT)) {
+                ffStrbufAppendS(&str, totalCount ? "Unused" : "Disabled");
+            } else {
+                ffPercentAppendNum(&str, 0, options->percent, str.length > 0, &options->moduleArgs);
+            }
+        } else {
+            if (percentType & FF_PERCENTAGE_TYPE_BAR_BIT) {
+                ffPercentAppendBar(&str, percentage, options->percent, &options->moduleArgs);
+                ffStrbufAppendC(&str, ' ');
+            }
+
+            if (!(percentType & FF_PERCENTAGE_TYPE_HIDE_OTHERS_BIT)) {
+                ffStrbufAppendF(&str, "%s / %s ", usedPretty.chars, totalPretty.chars);
+            }
+
+            if (percentType & FF_PERCENTAGE_TYPE_NUM_BIT) {
+                ffPercentAppendNum(&str, percentage, options->percent, str.length > 0, &options->moduleArgs);
+            }
+        }
+
+        ffStrbufTrimRight(&str, ' ');
+        ffStrbufPutTo(&str, stdout);
+    } else {
+        FF_STRBUF_AUTO_DESTROY percentageNum = ffStrbufCreate();
+        if (percentType & FF_PERCENTAGE_TYPE_NUM_BIT) {
+            ffPercentAppendNum(&percentageNum, percentage, options->percent, false, &options->moduleArgs);
+        }
+        FF_STRBUF_AUTO_DESTROY percentageBar = ffStrbufCreate();
+        if (percentType & FF_PERCENTAGE_TYPE_BAR_BIT) {
+            ffPercentAppendBar(&percentageBar, percentage, options->percent, &options->moduleArgs);
+        }
+        FF_PRINT_FORMAT_CHECKED(key.chars, index, &options->moduleArgs, FF_PRINT_TYPE_NO_CUSTOM_KEY, ((FFformatarg[]) {
+                                                                                                         FF_ARG(usedPretty, "used"),
+                                                                                                         FF_ARG(totalPretty, "total"),
+                                                                                                         FF_ARG(percentageNum, "percentage"),
+                                                                                                         FF_ARG(percentageBar, "percentage-bar"),
+                                                                                                         FF_ARG(storage->name, "name"),
+                                                                                                     }));
+    }
+}
+
+bool ffPrintSwap(FFSwapOptions* options) {
+    FF_LIST_AUTO_DESTROY result = ffListCreate();
+    const char* error = ffDetectSwap(&result);
+
+    if (error) {
+        ffPrintError(FF_SWAP_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, "%s", error);
+        return false;
+    }
+
+    if (options->separate && result.length > 0) {
+        uint8_t index = 0;
+        FF_LIST_FOR_EACH (FFSwapResult, storage, result) {
+            ++index;
+            printSwap(options, index, result.length, storage);
+        }
+    } else {
+        FFSwapResult total = {
+            .name = ffStrbufCreate(),
+        };
+        FF_LIST_FOR_EACH (FFSwapResult, storage, result) {
+            total.bytesUsed += storage->bytesUsed;
+            total.bytesTotal += storage->bytesTotal;
+        }
+        printSwap(options, 0, result.length, &total);
+        ffStrbufDestroy(&total.name);
+    }
+
+    FF_LIST_FOR_EACH (FFSwapResult, storage, result) {
+        ffStrbufDestroy(&storage->name);
+    }
+
+    return true;
+}
+
+void ffParseSwapJsonObject(FFSwapOptions* options, yyjson_val* module) {
+    yyjson_val *key, *val;
+    size_t idx, max;
+    yyjson_obj_foreach (module, idx, max, key, val) {
+        if (ffJsonConfigParseModuleArgs(key, val, &options->moduleArgs)) {
+            continue;
+        }
+
+        if (ffPercentParseJsonObject(key, val, &options->percent)) {
+            continue;
+        }
+
+        if (unsafe_yyjson_equals_str(key, "separate")) {
+            options->separate = yyjson_get_bool(val);
+            continue;
+        }
+
+        ffPrintError(FF_SWAP_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, "Unknown JSON key %s", unsafe_yyjson_get_str(key));
+    }
+}
+
+void ffGenerateSwapJsonConfig(FFSwapOptions* options, yyjson_mut_doc* doc, yyjson_mut_val* module) {
+    ffPercentGenerateJsonConfig(doc, module, options->percent);
+
+    ffJsonConfigGenerateModuleArgsConfig(doc, module, &options->moduleArgs);
+    yyjson_mut_obj_add_bool(doc, module, "separate", options->separate);
+}
+
+bool ffGenerateSwapJsonResult(FF_A_UNUSED FFSwapOptions* options, yyjson_mut_doc* doc, yyjson_mut_val* module) {
+    FF_LIST_AUTO_DESTROY result = ffListCreate();
+    const char* error = ffDetectSwap(&result);
+
+    if (error) {
+        yyjson_mut_obj_add_str(doc, module, "error", error);
+        return false;
+    }
+
+    yyjson_mut_val* arr = yyjson_mut_obj_add_arr(doc, module, "result");
+    FF_LIST_FOR_EACH (FFSwapResult, storage, result) {
+        yyjson_mut_val* obj = yyjson_mut_arr_add_obj(doc, arr);
+        yyjson_mut_obj_add_strbuf(doc, obj, "name", &storage->name);
+        yyjson_mut_obj_add_uint(doc, obj, "used", storage->bytesUsed);
+        yyjson_mut_obj_add_uint(doc, obj, "total", storage->bytesTotal);
+    }
+
+    FF_LIST_FOR_EACH (FFSwapResult, storage, result) {
+        ffStrbufDestroy(&storage->name);
+    }
+
+    return true;
+}
+
+void ffInitSwapOptions(FFSwapOptions* options) {
+    ffOptionInitModuleArg(&options->moduleArgs, "󰓡");
+    options->percent = (FFPercentageModuleConfig) { 50, 80, 0 };
+    options->separate = false;
+}
+
+void ffDestroySwapOptions(FFSwapOptions* options) {
+    ffOptionDestroyModuleArg(&options->moduleArgs);
+}
+
+FFModuleBaseInfo ffSwapModuleInfo = {
+    .name = FF_SWAP_MODULE_NAME,
+    .description = "Print swap (paging file) space usage",
+    .initOptions = (void*) ffInitSwapOptions,
+    .destroyOptions = (void*) ffDestroySwapOptions,
+    .parseJsonObject = (void*) ffParseSwapJsonObject,
+    .printModule = (void*) ffPrintSwap,
+    .generateJsonResult = (void*) ffGenerateSwapJsonResult,
+    .generateJsonConfig = (void*) ffGenerateSwapJsonConfig,
+    .formatArgs = FF_FORMAT_ARG_LIST(((FFModuleFormatArg[]) {
+        { "Used size", "used" },
+        { "Total size", "total" },
+        { "Percentage used (num)", "percentage" },
+        { "Percentage used (bar)", "percentage-bar" },
+        { "Name", "name" },
+    }))
+};
diff --git a/src/modules/swap/swap.h b/src/modules/swap/swap.h
new file mode 100644
index 0000000..e6b9a8b
--- /dev/null
+++ b/src/modules/swap/swap.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#include "option.h"
+
+#define FF_SWAP_MODULE_NAME "Swap"
+
+bool ffPrintSwap(FFSwapOptions* options);
+void ffInitSwapOptions(FFSwapOptions* options);
+void ffDestroySwapOptions(FFSwapOptions* options);
+
+extern FFModuleBaseInfo ffSwapModuleInfo;