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- /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is mozilla.org code.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1998
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
- /* First checked in on 98/12/03 by John R. McMullen, derived from net.h/mkparse.c. */
-
- #ifndef _ESCAPE_H_
- #define _ESCAPE_H_
-
- #include "prtypes.h"
- #include "nscore.h"
- #include "nsError.h"
- #include "nsString.h"
-
- /**
- * Valid mask values for nsEscape
- */
- typedef enum {
- url_All = 0 /**< %-escape every byte uncondtionally */
- , url_XAlphas = PR_BIT(0) /**< Normal escape - leave alphas intact, escape the rest */
- , url_XPAlphas = PR_BIT(1) /**< As url_XAlphas, but convert spaces (0x20) to '+' and plus to %2B */
- , url_Path = PR_BIT(2) /**< As url_XAlphas, but don't escape slash ('/') */
- } nsEscapeMask;
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- /**
- * Escape the given string according to mask
- * @param str The string to escape
- * @param mask How to escape the string
- * @return A newly allocated escaped string that must be free'd with
- * nsCRT::free, or null on failure
- */
- NS_COM char * nsEscape(const char * str, nsEscapeMask mask);
-
- NS_COM char * nsUnescape(char * str);
- /* decode % escaped hex codes into character values,
- * modifies the parameter, returns the same buffer
- */
-
- NS_COM PRInt32 nsUnescapeCount (char * str);
- /* decode % escaped hex codes into character values,
- * modifies the parameter buffer, returns the length of the result
- * (result may contain \0's).
- */
-
- NS_COM char *
- nsEscapeHTML(const char * string);
-
- NS_COM PRUnichar *
- nsEscapeHTML2(const PRUnichar *aSourceBuffer,
- PRInt32 aSourceBufferLen = -1);
- /*
- * Escape problem char's for HTML display
- */
-
-
- #ifdef __cplusplus
- }
- #endif
-
-
- /**
- * NS_EscapeURL/NS_UnescapeURL constants for |flags| parameter:
- */
- enum EscapeMask {
- /** url components **/
- esc_Scheme = PR_BIT(0),
- esc_Username = PR_BIT(1),
- esc_Password = PR_BIT(2),
- esc_Host = PR_BIT(3),
- esc_Directory = PR_BIT(4),
- esc_FileBaseName = PR_BIT(5),
- esc_FileExtension = PR_BIT(6),
- esc_FilePath = esc_Directory | esc_FileBaseName | esc_FileExtension,
- esc_Param = PR_BIT(7),
- esc_Query = PR_BIT(8),
- esc_Ref = PR_BIT(9),
- /** special flags **/
- esc_Minimal = esc_Scheme | esc_Username | esc_Password | esc_Host | esc_FilePath | esc_Param | esc_Query | esc_Ref,
- esc_Forced = PR_BIT(10), /* forces escaping of existing escape sequences */
- esc_OnlyASCII = PR_BIT(11), /* causes non-ascii octets to be skipped */
- esc_OnlyNonASCII = PR_BIT(12), /* causes _graphic_ ascii octets (0x20-0x7E)
- * to be skipped when escaping. causes all
- * ascii octets to be skipped when unescaping */
- esc_AlwaysCopy = PR_BIT(13), /* copy input to result buf even if escaping is unnecessary */
- esc_Colon = PR_BIT(14), /* forces escape of colon */
- esc_SkipControl = PR_BIT(15) /* skips C0 and DEL from unescaping */
- };
-
- /**
- * NS_EscapeURL
- *
- * Escapes invalid char's in an URL segment. Has no side-effect if the URL
- * segment is already escaped. Otherwise, the escaped URL segment is appended
- * to |result|.
- *
- * @param str url segment string
- * @param len url segment string length (-1 if unknown)
- * @param flags url segment type flag
- * @param result result buffer, untouched if part is already escaped
- *
- * @return TRUE if escaping was performed, FALSE otherwise.
- */
- NS_COM PRBool NS_EscapeURL(const char *str,
- PRInt32 len,
- PRUint32 flags,
- nsACString &result);
-
- /**
- * Expands URL escape sequences... beware embedded null bytes!
- *
- * @param str url string to unescape
- * @param len length of |str|
- * @param flags only esc_OnlyNonASCII, esc_SkipControl and esc_AlwaysCopy
- * are recognized
- * @param result result buffer, untouched if |str| is already unescaped
- *
- * @return TRUE if unescaping was performed, FALSE otherwise.
- */
- NS_COM PRBool NS_UnescapeURL(const char *str,
- PRInt32 len,
- PRUint32 flags,
- nsACString &result);
-
- /** returns resultant string length **/
- inline PRInt32 NS_UnescapeURL(char *str) { return nsUnescapeCount(str); }
-
- /**
- * string friendly versions...
- */
- inline const nsACString &
- NS_EscapeURL(const nsASingleFragmentCString &part, PRInt16 partType, nsACString &result) {
- const char *temp;
- if (NS_EscapeURL(part.BeginReading(temp), part.Length(), partType, result))
- return result;
- return part;
- }
- inline const nsACString &
- NS_UnescapeURL(const nsASingleFragmentCString &str, PRUint32 flags, nsACString &result) {
- const char *temp;
- if (NS_UnescapeURL(str.BeginReading(temp), str.Length(), flags, result))
- return result;
- return str;
- }
- // inline unescape
- inline nsAFlatCString &
- NS_UnescapeURL(nsAFlatCString &str)
- {
- str.SetLength(nsUnescapeCount(str.BeginWriting()));
- return str;
- }
-
- #endif // _ESCAPE_H_
-