X-Git-Url: https://git.saurik.com/apple/system_cmds.git/blobdiff_plain/1a7e3f61d38d679bba59130891c2031b5a0092b6..bd6521f0fc816ab056bc71376f9706a69b3b52c1:/CPPUtil/UtilPath.cpp?ds=inline

diff --git a/CPPUtil/UtilPath.cpp b/CPPUtil/UtilPath.cpp
new file mode 100644
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--- /dev/null
+++ b/CPPUtil/UtilPath.cpp
@@ -0,0 +1,92 @@
+//
+//  UtilPath.inline.hpp
+//  CPPUtil
+//
+//  Created by James McIlree on 4/8/13.
+//  Copyright (c) 2013 Apple. All rights reserved.
+//
+
+#include "CPPUtil.h"
+
+#include <sys/stat.h>
+
+BEGIN_UTIL_NAMESPACE
+
+std::string Path::basename(const char* path) {
+	size_t length = strlen(path);
+
+	/*
+	 * case: ""
+	 * case: "/"
+	 * case: [any-single-character-paths]
+	 */
+	if (length < 2)
+		return std::string(path);
+
+	char temp[PATH_MAX];
+	char* temp_cursor = &temp[PATH_MAX - 1];
+	char* temp_end = temp_cursor;
+	*temp_end = 0; // NULL terminate
+
+	const char* path_cursor = &path[length-1];
+
+	while (path_cursor >= path) {
+		if (*path_cursor == '/') {
+			// If we have copied one or more chars, we're done
+			if (temp_cursor != temp_end)
+				return std::string(temp_cursor);
+		} else {
+			*(--temp_cursor) = *path_cursor;
+		}
+
+		// Is the temp buffer full?
+		if (temp_cursor == temp)
+			return std::string(temp);
+
+		--path_cursor;
+	}
+
+	if (path[0] == '/' && temp_cursor == temp_end) {
+		*(--temp_cursor) = '/';
+	}
+
+	return std::string(temp_cursor);
+}
+
+std::string Path::basename(std::string& path) {
+	return basename(path.c_str());
+}
+
+bool Path::exists(const char *path) {
+	struct stat statinfo;
+	return lstat(path, &statinfo) == 0;
+}
+
+bool Path::exists(std::string& path) {
+	return exists(path.c_str());
+}
+
+bool Path::is_file(const char* path, bool should_resolve_symlinks) {
+	struct stat statinfo;
+	if (should_resolve_symlinks) {
+		if (stat(path, &statinfo) == 0) {
+			if (S_ISREG(statinfo.st_mode)) {
+				return true;
+			}
+		}
+	} else {
+		if (lstat(path, &statinfo) == 0) {
+			if (S_ISREG(statinfo.st_mode)) {
+				return true;
+			}
+		}
+	}
+
+	return false;
+}
+
+bool Path::is_file(std::string& path, bool should_resolve_symlinks) {
+	return is_file(path.c_str(), should_resolve_symlinks);
+}
+
+END_UTIL_NAMESPACE