1 files changed, 41 insertions, 0 deletions
diff --git a/42sh/src/utils/env.h b/42sh/src/utils/env.h
new file mode 100644
index 0000000..e349651
--- /dev/null
+++ b/42sh/src/utils/env.h
@@ -0,0 +1,41 @@
+#ifndef ENV_H
+#define ENV_H
+
+#include <stdlib.h>
+
+#define DEFAULT_IFS " \t\n"
+
+#define MAX_PATH_SIZE 4096
+#define MAX_RAND 32768
+
+/**
+ * @brief Sets the variable `name`=`value` into the environment.
+ */
+void env_set(const char *name, const char *value);
+
+/**
+ * @brief Unsets the variable `name` from the environment.
+ */
+void env_unset(const char *name);
+
+/**
+ * @brief Gets the value of the variable `name`.
+ * @return A string that contains the value.
+ */
+char *env_get(const char *name);
+
+/**
+ * @brief Clears all of the variables that are in the environment.
+ */
+void env_clear(void);
+
+/**
+ * @brief Sets a few variables to default values (that can be found in `env.h`).
+ * Here is the list of the variables affected by this function:
+ * `PWD`,
+ * `OLDPWD`,
+ * `IFS`
+ */
+void env_setup(void);
+
+#endif /* ! ENV_H */