Made a simple miniDB during the governmental job XD

simple miniDB that has couple of commands, that uses
my hashMap implementation to store (key,value) pairs.

1 files changed, 97 insertions, 0 deletions

diff --git a/miniDB/db_commands.c b/miniDB/db_commands.c
new file mode 100644
index 0000000..4e6edae
--- /dev/null
+++ b/miniDB/db_commands.c
@@ -0,0 +1,97 @@
+#include "HashMap.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define SUCCESS 1
+#define FAILED 0
+#define EXIT -1
+
+void parse(char *input, char *tokens[], int max_tokens) {
+
+  int i = 0;
+
+  char *token = strtok(input, " ");
+
+  while (token != NULL && i < max_tokens) {
+
+    tokens[i] = token;
+
+    i++;
+
+    token = strtok(NULL, " ");
+  }
+}
+
+int db_commands(struct hashTable *self, FILE *fh, char *fileName) {
+
+  printf("db> ");
+
+  char *input = read_line();
+  if (!input) {
+    return FAILED;
+  }
+
+  char *tokens[3];
+
+  parse(input, tokens, 3);
+
+  char *endptr;
+
+  int value = strtol(tokens[2], &endptr, 10);
+
+  if (strcmp(tokens[0], "INSERT") == 0) {
+
+    if (*endptr != '\0')
+      return FAILED;
+
+    self->insert(self, tokens[1], value);
+    return SUCCESS;
+  } else if (strcmp(tokens[0], "EXIT") == 0) {
+    printf("BYE\n");
+    return EXIT;
+  } else if (strcmp(tokens[0], "GET") == 0) {
+    struct Entry *cur = self->find(self, tokens[1]);
+    if (cur) {
+      printf("%d\n", cur->__value);
+      return SUCCESS;
+    }
+    return FAILED;
+  } else if (strcmp(tokens[0], "DELETE") == 0) {
+    self->pop(self, tokens[1]);
+  } else if (strcmp(tokens[0], "SAVE") == 0) {
+    fh = fopen(fileName, "w");
+
+    int iteratorCount = 0;
+
+    while (iteratorCount < self->__buckets) {
+        if (self->__items[iteratorCount].__key == NULL) {
+            iteratorCount++;
+            continue;
+        }
+      fprintf(fh, "%s %d\n", self->__items[iteratorCount].__key, self->__items[iteratorCount].__value);
+      iteratorCount++;
+    }
+
+    fclose(fh);
+    return SUCCESS;
+  } else if (strcmp(tokens[0], "LOAD") == 0) {
+    tokens[1] = fileName;
+    fh = fopen(tokens[1], "r");
+
+    char key[100];
+    int val;
+    while (fscanf(fh, "%s %d\n", key, &val) == 2) {
+      self->insert(self, key, val);
+    }
+    fclose(fh);
+    return SUCCESS;
+  } else if (strcmp(tokens[0], "HELP") == 0) {
+    printf("INSERT <key> <value>\nDELETE <key>\nGET <key>\nSAVE\nLOAD <filename>\nEXIT\nDUMPTBL\n");
+    return SUCCESS;
+  }
+  else if(strcmp(tokens[0], "DUMPTBL") == 0) {
+    self->dump(self);
+  }
+  return FAILED;
+}
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