refactor: reorganize files

core/sappyou.c

@@ -0,0 +1,166 @@
+#include <malloc.h>
+#include <string.h>
+#include <time.h>
+
+#include "../include/core.h"
+
+const Tanzaku HOLE_TANZAKU = {HOLE_ID};
+
+// Sappyou file signature: 七夕冊表
+const uint16_t SAPPYOU_SIG[4] = {L'七', L'夕', L'冊', L'表'};
+
+int sappyou_init(Sappyou *sappyou) {
+    sappyou->created_ts = time(NULL);
+    sappyou->modified_ts = sappyou->created_ts;
+    sappyou->size = 0;
+    sappyou->database = NULL;
+    sappyou->hole_cnt = 0;
+    sappyou->holes = NULL;
+    sappyou->file = NULL;
+    return 0;
+}
+
+int sappyou_free(Sappyou *sappyou) {
+    for (uint64_t i = 0; i < sappyou->size; i++) {
+        free(sappyou->database[i].name);
+        free(sappyou->database[i].description);
+    }
+    free(sappyou->database);
+    if (sappyou->file != NULL) {
+        fclose(sappyou->file);
+    }
+    return 0;
+}
+
+int sappyou_load(Sappyou *sappyou) {
+    sappyou->file = freopen(NULL, "rb", sappyou->file);
+    if (sappyou->file == NULL) {
+        return 1;
+    }
+    uint16_t signature[4];
+    rewind(sappyou->file);
+    fread(signature, 2, 4, sappyou->file);
+    if (memcmp(signature, SAPPYOU_SIG, 8) != 0) {
+        return 1;
+    }
+    fread(&sappyou->created_ts, 8, 1, sappyou->file);
+    fread(&sappyou->modified_ts, 8, 1, sappyou->file);
+    fread(&sappyou->size, 8, 1, sappyou->file);
+    fread(&sappyou->hole_cnt, 8, 1, sappyou->file);
+    sappyou->database = malloc(sappyou->size * sizeof(Tanzaku));
+    sappyou->holes = malloc(sappyou->hole_cnt * sizeof(Tanzaku *));
+    size_t max_string_len = SIZE_MAX;
+    for (uint64_t i = 0, r = sappyou->hole_cnt; i < sappyou->size; i++) {
+        if (fgetc(sappyou->file) != 0) {
+            sappyou->database[i].id = i;
+            fread(&sappyou->database[i].created_ts, 8, 1, sappyou->file);
+            fread(&sappyou->database[i].modified_ts, 8, 1, sappyou->file);
+            getdelim(&sappyou->database[i].name, &max_string_len, 0, sappyou->file);
+            getdelim(&sappyou->database[i].description, &max_string_len, 0, sappyou->file);
+        } else {
+            sappyou->database[i].id = HOLE_ID;
+            r--;
+            sappyou->holes[r] = sappyou->database + i;
+        }
+    }
+    return 0;
+}
+
+int sappyou_save(Sappyou *sappyou) {
+    sappyou->file = freopen(NULL, "wb", sappyou->file);
+    if (sappyou->file == NULL) {
+        return 1;
+    }
+    rewind(sappyou->file);
+    fwrite(SAPPYOU_SIG, 2, 4, sappyou->file);
+    fwrite(&sappyou->created_ts, 8, 1, sappyou->file);
+    fwrite(&sappyou->modified_ts, 8, 1, sappyou->file);
+    fwrite(&sappyou->size, 8, 1, sappyou->file);
+    fwrite(&sappyou->hole_cnt, 8, 1, sappyou->file);
+    fflush(sappyou->file);
+    for (uint64_t i = 0; i < sappyou->size; i++) {
+        if (sappyou->database[i].id != HOLE_ID) {
+            fputc(-1, sappyou->file);
+            fwrite(&sappyou->database[i].created_ts, 8, 1, sappyou->file);
+            fwrite(&sappyou->database[i].modified_ts, 8, 1, sappyou->file);
+            fputs(sappyou->database[i].name, sappyou->file);
+            fputc(0, sappyou->file);
+            fputs(sappyou->database[i].description, sappyou->file);
+            fputc(0, sappyou->file);
+        } else {
+            fputc(0, sappyou->file);
+        }
+    }
+    fflush(sappyou->file);
+    return 0;
+}
+
+int sappyou_open(Sappyou *sappyou, const char *path) {
+    sappyou->file = fopen(path, "rb");
+    if (sappyou->file == NULL) {
+        return 1;
+    }
+    return sappyou_load(sappyou);
+}
+
+int sappyou_dump(Sappyou *sappyou, const char *path) {
+    sappyou->file = fopen(path, "wb");
+    if (sappyou->file == NULL) {
+        return 1;
+    }
+    return sappyou_save(sappyou);
+}
+
+int tanzaku_add(Sappyou *sappyou, const char *name, const char *description) {
+    if (sappyou->size == -1 && sappyou->hole_cnt == 0) {
+        return 1;
+    }
+    Tanzaku newbie;
+    newbie.created_ts = time(NULL);
+    newbie.modified_ts = newbie.created_ts;
+    size_t name_size = strlen(name),
+            description_size = strlen(description);
+    newbie.name = malloc(name_size + 1);
+    strcpy(newbie.name, name);
+    newbie.name[name_size] = 0;
+    newbie.description = malloc(description_size + 1);
+    strcpy(newbie.description, description);
+    newbie.description[description_size] = 0;
+    if (sappyou->hole_cnt > 0) {
+        sappyou->hole_cnt--;
+        Tanzaku **hole_ptr = sappyou->holes + sappyou->hole_cnt;
+        newbie.id = *hole_ptr - sappyou->database;
+        **hole_ptr = newbie;
+        sappyou->holes = realloc(sappyou->holes, sappyou->hole_cnt * sizeof(Tanzaku *));
+    } else {
+        newbie.id = sappyou->size;
+        sappyou->size++;
+        sappyou->database = realloc(sappyou->database, sappyou->size * sizeof(Tanzaku));
+        sappyou->database[newbie.id] = newbie;
+    }
+    sappyou->modified_ts = newbie.created_ts;
+    return 0;
+}
+
+int tanzaku_rem(Sappyou *sappyou, uint64_t tanzaku_id) {
+    if (tanzaku_id == HOLE_ID) {
+        return 1;
+    }
+    if (tanzaku_id >= sappyou->size) {
+        return 1;
+    }
+    if (sappyou->database[tanzaku_id].id == HOLE_ID) {
+        return 0;
+    }
+    sappyou->database[tanzaku_id].id = HOLE_ID;
+    if (tanzaku_id == sappyou->size - 1) {
+        sappyou->size--;
+        sappyou->database = realloc(sappyou->database, sappyou->size * sizeof(Tanzaku));
+    } else {
+        sappyou->hole_cnt++;
+        sappyou->holes = realloc(sappyou->holes, sappyou->hole_cnt);
+        sappyou->holes[sappyou->hole_cnt - 1] = sappyou->database + tanzaku_id;
+    }
+    sappyou->modified_ts = time(NULL);
+    return 0;
+}