init

.ish_history

@@ -0,0 +1,12 @@
+11 
+clear
+echo clear > uwu.txt
+.ish < uwu.txt
+./ish < uwu.txt
+clear 
+cat uwu.txt
+./ish < uwu.txt
+clear 
+              																																								
+
+quit

builtin.c

@@ -0,0 +1,166 @@
+#include "headers.h"
+#include "functions.h"
+
+void pwd()
+{
+    char buff[MY_LEN];
+    char *ret = getcwd(buff, MY_LEN);
+    // printf("We are at : %s\n", buff);
+    printf("%s\n", buff);
+    if (debug)
+    {
+        printf("getcwd returned %s\n", ret);
+        perror("getcwd ");
+    }
+}
+
+char *cd(char *command, char *path)
+{
+    char currpath[MY_LEN];
+    strcpy(currpath, path);
+
+    char extrapath[MY_LEN];
+    if (debug)
+        printf("CD command = %s\n", command);
+    char *token = strtok(command, " \t");
+    if (debug)
+        printf("no more tok after this one - %s\n", token);
+    if (!strcpy(token, "cd"))
+    {
+        printf("this is not a cd command error \n");
+    }
+    token = strtok(NULL, " \t");
+
+    if (token == NULL)
+    {
+        if (debug)
+            printf("token is null\n");
+        token = HomeDirectory;
+    }
+
+    char *end = strtok(NULL, " \t");
+    if (end != NULL)
+    {
+        printf("Too many arg for cd\n");
+        return NULL;
+    }
+
+    DeTildify(token);
+
+    if (!strcmp(token, "-"))
+    {
+        if (!strcmp(PreviousDirectory, "uwu"))
+        {
+            printf("Error: Old pwd not set\n");
+            return NULL;
+        }
+        strcpy(token, PreviousDirectory);
+        printf("%s\n", PreviousDirectory);
+        if (debug)
+        {
+            printf("Previous directory = %s\n", PreviousDirectory);
+        }
+    }
+
+    if (debug)
+        printf("CD token = %s\n", token);
+
+    char cwd[256];
+
+    if (chdir(token) != 0)
+    {
+        // if (debug)
+        // {
+        perror("cd error()");
+        printf("cannot change path to %s\n", token);
+        // }
+    }
+    else
+    {
+        if (getcwd(cwd, sizeof(cwd)) == NULL)
+        {
+            // if (debug)
+            // {
+            perror("getcwd() error");
+            // }
+        }
+        else
+        {
+            if (debug)
+            {
+                printf("current working directory is: %s\n", cwd);
+            }
+            strcpy(PreviousDirectory, path);
+            strcpy(path, cwd);
+        }
+    }
+}
+
+// void Echo(char* temp)
+// {
+//     int flag1 = 0;
+//     int flag2 = 0;
+//     int flag3 = 0;
+//     int flag4 = 0;
+//     int flag = 0;
+//
+//     int start;
+//
+//     for(int i = 0; i < strlen(temp); i++)
+//     {
+//         if(flag == 0)
+//         {
+//             if(temp[i] == 'e') flag1 = 1;
+//             if(temp[i] == 'c') flag2 = 1;
+//             if(temp[i] == 'h') flag3 = 1;
+//             if(temp[i] == 'o') flag4 = 1;
+//             flag = flag1 & flag2 & flag3 & flag4;
+//         }
+//         else
+//         {
+//             start = i;
+//             break;
+//         }
+//     }
+//
+//     for(int i = start; i < strlen(temp); i++)
+//     {
+//         if(temp[i] == ' ') {}
+//         else
+//         {
+//             start = i;
+//             break;
+//         }
+//     }
+//
+//     for(int i = start; i < strlen(temp); i++)
+//     {
+//         printf("%c",temp[i]);
+//     }
+//     printf("\n");
+// }
+
+void Echo(char *command)
+{
+    char *Words[MY_LEN];
+    for (int i = 0; i < MY_LEN; i++)
+    {
+        Words[i] = malloc(MY_LEN * sizeof(char));
+    }
+    char *token = strtok(command, " \t");
+    int totalwords = 0;
+    while (token != NULL)
+    {
+        if (debug)
+            printf("echo token = %s\n", token);
+        strcpy(Words[totalwords], token);
+        totalwords++;
+        token = strtok(NULL, " \t");
+    }
+
+    for (int i = 1; i < totalwords; i++)
+    {
+        printf("%s ", Words[i]);
+    }
+    printf("\n");
+}