3 files changed, 219 insertions, 0 deletions
diff --git a/rushs/tinyprintf/hash_map/hash.c b/rushs/tinyprintf/hash_map/hash.c
new file mode 100644
index 0000000..434616f
--- /dev/null
+++ b/rushs/tinyprintf/hash_map/hash.c
@@ -0,0 +1,13 @@
+#include <stddef.h>
+
+size_t hash(const char *key)
+{
+    size_t i = 0;
+    size_t hash = 0;
+
+    for (i = 0; key[i] != '\0'; ++i)
+        hash += key[i];
+    hash += i;
+
+    return hash;
+}
diff --git a/rushs/tinyprintf/hash_map/hash_map.c b/rushs/tinyprintf/hash_map/hash_map.c
new file mode 100644
index 0000000..4690e8b
--- /dev/null
+++ b/rushs/tinyprintf/hash_map/hash_map.c
@@ -0,0 +1,177 @@
+#include "hash_map.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct hash_map *hash_map_init(size_t size)
+{
+    struct hash_map *new;
+    if ((new = malloc(sizeof(struct hash_map))) == NULL)
+    {
+        return NULL;
+    }
+    if ((new->data = malloc(size * sizeof(struct pair_list *))) == NULL)
+    {
+        return NULL;
+    }
+    new->size = size;
+
+    for (size_t i = 0; i < size; i++)
+    {
+        new->data[i] = NULL;
+    }
+
+    return new;
+}
+
+bool hash_map_insert(struct hash_map *hash_map, const char *key, char *value,
+                     bool *updated)
+{
+    if (hash_map == NULL || updated == NULL || hash_map->size == 0)
+    {
+        return false;
+    }
+    *updated = false;
+
+    size_t h = hash(key);
+    if (h >= hash_map->size)
+    {
+        h %= hash_map->size;
+    }
+
+    struct pair_list *new = malloc(sizeof(struct pair_list));
+    if (new == NULL)
+    {
+        return false;
+    }
+
+    for (struct pair_list *p = hash_map->data[h]; p; p = p->next)
+    {
+        if (strcmp(p->key, key) == 0)
+        {
+            p->value = value;
+            *updated = true;
+            free(new);
+            return true;
+        }
+    }
+
+    new->next = hash_map->data[h];
+    new->key = key;
+    new->value = value;
+    hash_map->data[h] = new;
+    return true;
+}
+
+void hash_map_free(struct hash_map *hash_map)
+{
+    if (hash_map == NULL)
+    {
+        return;
+    }
+
+    if (hash_map->data == NULL)
+    {
+        free(hash_map);
+        return;
+    }
+
+    for (size_t i = 0; i < hash_map->size; i++)
+    {
+        while (hash_map->data[i])
+        {
+            struct pair_list *tmp = hash_map->data[i]->next;
+            free(hash_map->data[i]);
+            hash_map->data[i] = tmp;
+        }
+    }
+
+    free(hash_map->data);
+    free(hash_map);
+}
+
+void hash_map_dump(struct hash_map *hash_map)
+{
+    if (hash_map == NULL || hash_map->data == NULL)
+    {
+        return;
+    }
+
+    for (size_t i = 0; i < hash_map->size; i++)
+    {
+        if (hash_map->data[i] != NULL)
+        {
+            printf("%s: %s", hash_map->data[i]->key, hash_map->data[i]->value);
+            for (struct pair_list *p = hash_map->data[i]->next; p; p = p->next)
+            {
+                printf(", %s: %s", p->key, p->value);
+            }
+            printf("\n");
+        }
+    }
+}
+
+const char *hash_map_get(const struct hash_map *hash_map, const char *key)
+{
+    if (hash_map == NULL || hash_map->data == NULL || hash_map->size == 0)
+    {
+        return NULL;
+    }
+
+    size_t h = hash(key);
+    if (h >= hash_map->size)
+    {
+        h %= hash_map->size;
+    }
+    struct pair_list *p;
+    for (p = hash_map->data[h]; p && strcmp(p->key, key) != 0; p = p->next)
+    {
+        continue;
+    }
+
+    if (p)
+    {
+        return p->value;
+    }
+    return NULL;
+}
+
+bool hash_map_remove(struct hash_map *hash_map, const char *key)
+{
+    if (hash_map == NULL || hash_map->data == NULL || hash_map->size == 0)
+    {
+        return false;
+    }
+
+    size_t h = hash(key);
+    if (h >= hash_map->size)
+    {
+        h %= hash_map->size;
+    }
+    if (hash_map->data[h] == NULL)
+    {
+        return false;
+    }
+
+    if (strcmp(hash_map->data[h]->key, key) == 0)
+    {
+        struct pair_list *tmp = hash_map->data[h]->next;
+        free(hash_map->data[h]);
+        hash_map->data[h] = tmp;
+        return true;
+    }
+
+    struct pair_list *p;
+    for (p = hash_map->data[h]; p->next; p = p->next)
+    {
+        if (strcmp(p->next->key, key) == 0)
+        {
+            struct pair_list *tmp = p->next->next;
+            free(p->next);
+            p->next = tmp;
+            return true;
+        }
+    }
+    return false;
+}
diff --git a/rushs/tinyprintf/hash_map/hash_map.h b/rushs/tinyprintf/hash_map/hash_map.h
new file mode 100644
index 0000000..c731eab
--- /dev/null
+++ b/rushs/tinyprintf/hash_map/hash_map.h
@@ -0,0 +1,29 @@
+#ifndef HASH_MAP_H
+#define HASH_MAP_H
+
+#include <stdbool.h>
+#include <stddef.h>
+
+struct pair_list
+{
+    const char *key;
+    char *value;
+    struct pair_list *next;
+};
+
+struct hash_map
+{
+    struct pair_list **data;
+    size_t size;
+};
+
+size_t hash(const char *str);
+struct hash_map *hash_map_init(size_t size);
+bool hash_map_insert(struct hash_map *hash_map, const char *key, char *value,
+                     bool *updated);
+void hash_map_free(struct hash_map *hash_map);
+void hash_map_dump(struct hash_map *hash_map);
+const char *hash_map_get(const struct hash_map *hash_map, const char *key);
+bool hash_map_remove(struct hash_map *hash_map, const char *key);
+
+#endif /* ! HASH_MAP_H */