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