codecrafters-shell-c

commit 2c285c8d56d5123400372bbfa919a17ea35351f9
parent 3ddd50661aa344b3b62212aedc7954ce0b98795f
Author: 5hif7y <[email protected]>
Date:   Tue, 31 Dec 2024 13:09:01 -0300

8 type executable files

Diffstat:
M
app/main.c
 | 
39
+++++++++++++++++++++++++++++++++++++--

1 file changed, 37 insertions(+), 2 deletions(-)
diff --git a/app/main.c b/app/main.c
@@ -2,9 +2,10 @@
 #include <string.h>
 #include <stdbool.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 void parse_input(const char *input, char *cmd, char **args, int *argc);
-
+bool find_executable(const char *cmd, char *result_path);
 
 int main() {
 
@@ -45,11 +46,14 @@ int main() {
       printf("\n");
     } else if(!strcmp(cmd, "type")){
 	if(argc > 0){
+	  char path[512];
           if(!strcmp(args[0], "echo") || !strcmp(args[0], "exit")
   			|| !strcmp(args[0], "type")){
             printf("%s is a shell builtin\n", args[0]);
+	  } else if (find_executable(args[0], path)) {
+            printf("%s is %s\n", args[0], path);
   	  } else {
-              printf("%s not found\n", args[0]);
+            printf("%s not found\n", args[0]);
   	  }
 	} else {
 	  printf("Usage: type [command]\n");
@@ -82,4 +86,35 @@ void parse_input(const char *input, char *cmd, char **args, int *argc){
   args[*argc] = NULL;
 }
 
+bool find_executable(const char *cmd, char *result_path){
+  char *path_env = getenv("PATH");
+  if(!path_env){
+    return false;
+  }
+
+  char path_copy[1024];
+  strncpy(path_copy, path_env, sizeof(path_copy) - 1);
+  path_copy[sizeof(path_copy) - 1] = '\0';
+
+  char separator = ':';
+#ifdef _WIN32
+  separator = ';';
+#endif
+
+  char *dir = strtok(path_copy, &separator);
+  while (dir != NULL){
+    snprintf(result_path, 512, "%s/%s", dir, cmd);
+
+    if(access(result_path, X_OK) == 0){
+      return true;
+    }
+
+    dir = strtok(NULL, &separator);
+  }
+
+  return false;
+}
+
+
+