io: implement stat'ing paths, files, and directory contents

io/sys/darwin/path.c

@@ -1,9 +1,15 @@
+#include "status.h"
+
 #include <blue/core/stringstream.h>
+#include <blue/io/file.h>
 #include <blue/io/path.h>
 #include <blue/object/string.h>
 #include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/stat.h>
 #include <unistd.h>
 
 struct b_path {
@@ -60,12 +66,13 @@ struct b_path *b_path_create_root()
 
 struct b_path *b_path_create_cwd()
 {
-	char *buf = malloc(_PC_PATH_MAX);
+	const long buf_len = 2048;
+	char *buf = malloc(buf_len);
 	if (!buf) {
 		return NULL;
 	}
 
-	if (!getcwd(buf, _PC_PATH_MAX)) {
+	if (!getcwd(buf, buf_len)) {
 		free(buf);
 		return NULL;
 	}
@@ -170,17 +177,68 @@ bool b_path_is_absolute(const struct b_path *path)
 
 bool b_path_exists(const struct b_path *path)
 {
-	return false;
+	b_file_info info;
+	if (!B_OK(b_path_stat(path, &info))) {
+		return false;
+	}
+
+	return true;
 }
 
 bool b_path_is_file(const struct b_path *path)
 {
-	return false;
+	b_file_info info;
+	if (!B_OK(b_path_stat(path, &info))) {
+		return false;
+	}
+
+	return (info.attrib & B_FILE_ATTRIB_NORMAL) != 0;
 }
 
 bool b_path_is_directory(const struct b_path *path)
 {
-	return false;
+	b_file_info info;
+	if (!B_OK(b_path_stat(path, &info))) {
+		return false;
+	}
+
+	return (info.attrib & B_FILE_ATTRIB_DIRECTORY) != 0;
+}
+
+enum b_status b_path_stat(const b_path *path, struct b_file_info *out)
+{
+	struct stat st;
+	int err = stat(b_path_ptr(path), &st);
+
+	if (err != 0) {
+		return b_status_from_errno(errno, B_ERR_IO_FAILURE);
+	}
+
+	memset(out, 0x0, sizeof *out);
+
+	out->length = st.st_size;
+
+	if (S_ISREG(st.st_flags)) {
+		out->attrib |= B_FILE_ATTRIB_NORMAL;
+	}
+
+	if (S_ISDIR(st.st_flags)) {
+		out->attrib |= B_FILE_ATTRIB_DIRECTORY;
+	}
+
+	if (S_ISBLK(st.st_flags)) {
+		out->attrib |= B_FILE_ATTRIB_BLOCK_DEVICE;
+	}
+
+	if (S_ISCHR(st.st_flags)) {
+		out->attrib |= B_FILE_ATTRIB_CHAR_DEVICE;
+	}
+
+	if (S_ISLNK(st.st_flags)) {
+		out->attrib |= B_FILE_ATTRIB_SYMLINK;
+	}
+
+	return B_SUCCESS;
 }
 
 const char *b_path_ptr(const struct b_path *path)
@@ -195,7 +253,9 @@ size_t b_path_length(const struct b_path *path)
 
 void path_release(struct b_object *obj)
 {
-	b_path_release((struct b_path *)obj);
+	struct b_path *path = (struct b_path *)obj;
+
+	b_string_release(path->pathstr);
 }
 
 void path_to_string(struct b_object *obj, struct b_stringstream *out)