src/TortoiseMerge/libsvn_diff/private/svn_fspath.h

   1 /**
   2  * @copyright
   3  * ====================================================================
   4  *    Licensed to the Apache Software Foundation (ASF) under one
   5  *    or more contributor license agreements.  See the NOTICE file
   6  *    distributed with this work for additional information
   7  *    regarding copyright ownership.  The ASF licenses this file
   8  *    to you under the Apache License, Version 2.0 (the
   9  *    "License"); you may not use this file except in compliance
  10  *    with the License.  You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  *    Unless required by applicable law or agreed to in writing,
  15  *    software distributed under the License is distributed on an
  16  *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  17  *    KIND, either express or implied.  See the License for the
  18  *    specific language governing permissions and limitations
  19  *    under the License.
  20  * ====================================================================
  21  * @endcopyright
  22  *
  23  * @file svn_fspath.h
  24  * @brief Implementation of path manipulation functions similar to
  25  *        those in svn_dirent_uri.h (which see for details) but for
  26  *        the private fspath class of paths.
  27  */
  28
  29 #ifndef SVN_FSPATH_H
  30 #define SVN_FSPATH_H
  31
  32 #include <apr.h>
  33 #include <apr_pools.h>
  34
  35 #include "svn_types.h"
  36
  37 #ifdef __cplusplus
  38 extern "C" {
  39 #endif /* __cplusplus */
  40
  41
  42 /** Return TRUE iff @a fspath is canonical.
  43  * @a fspath need not be canonical, of course.
  44  *
  45  * @since New in 1.7.
  46  */
  47 svn_boolean_t
  48 svn_fspath__is_canonical(const char *fspath);
  49
  50
  51 /** This function is similar to svn_relpath_canonicalize(), except
  52  * that it returns an fspath (which is essentially just a relpath
  53  * tacked onto a leading forward slash).
  54  *
  55  * The returned fspath may be statically allocated or allocated from
  56  * @a pool.
  57  *
  58  * This is similar to svn_fs__canonicalize_abspath() but also treats "."
  59  * segments as special.
  60  *
  61  * @since New in 1.7.
  62  */
  63 const char *
  64 svn_fspath__canonicalize(const char *fspath,
  65                          apr_pool_t *pool);
  66
  67 /** Return the dirname of @a fspath, defined as the path with its basename
  68  * removed.  If @a fspath is "/", return "/".
  69  *
  70  * Allocate the result in @a pool.
  71  *
  72  * @since New in 1.7.
  73  */
  74 const char *
  75 svn_fspath__dirname(const char *fspath,
  76                     apr_pool_t *pool);
  77
  78 /** Return the last component of @a fspath.  The returned value will have no
  79  * slashes in it.  If @a fspath is "/", return "".
  80  *
  81  * If @a pool is NULL, return a pointer to within @a fspath, else allocate
  82  * the result in @a pool.
  83  *
  84  * @since New in 1.7.
  85  */
  86 const char *
  87 svn_fspath__basename(const char *fspath,
  88                      apr_pool_t *pool);
  89
  90 /** Divide the canonical @a fspath into @a *dirpath and @a
  91  * *base_name, allocated in @a pool.
  92  *
  93  * If @a dirpath or @a base_name is NULL, then don't set that one.
  94  *
  95  * Either @a dirpath or @a base_name may be @a fspath's own address, but they
  96  * may not both be the same address, or the results are undefined.
  97  *
  98  * If @a fspath has two or more components, the separator between @a dirpath
  99  * and @a base_name is not included in either of the new names.
 100  *
 101  * @since New in 1.7.
 102  */
 103 void
 104 svn_fspath__split(const char **dirpath,
 105                   const char **base_name,
 106                   const char *fspath,
 107                   apr_pool_t *result_pool);
 108
 109 /** Return the fspath composed of @a fspath with @a relpath appended.
 110  * Allocate the result in @a result_pool.
 111  *
 112  * @since New in 1.7.
 113  */
 114 char *
 115 svn_fspath__join(const char *fspath,
 116                  const char *relpath,
 117                  apr_pool_t *result_pool);
 118
 119
 120 /** Return TRUE if @a fspath (with length @a len) is the root
 121  * directory; return FALSE otherwise.
 122  *
 123  * @since New in 1.7.
 124  */
 125 svn_boolean_t
 126 svn_fspath__is_root(const char *fspath,
 127                     apr_size_t len);
 128
 129 /** Return the relative path part of @a child_fspath that is below
 130  * @a parent_fspath, or just "" if @a parent_fspath is equal to
 131  * @a child_fspath. If @a child_fspath is not below @a parent_fspath
 132  * or equal to it, return @c NULL.
 133  *
 134  * @since New in 1.7.
 135  */
 136 const char *
 137 svn_fspath__skip_ancestor(const char *parent_fspath,
 138                           const char *child_fspath);
 139
 140 /** Return the longest common path shared by two fspaths, @a fspath1 and
 141  * @a fspath2.  If there's no common ancestor, return "/".
 142  *
 143  * @since New in 1.7.
 144  */
 145 char *
 146 svn_fspath__get_longest_ancestor(const char *fspath1,
 147                                  const char *fspath2,
 148                                  apr_pool_t *result_pool);
 149
 150
 151
 152 \f
 153 /** A faux fspath API used by the DAV modules to help us distinguish
 154  * between real URI-decoded fspaths and URI-encoded URL path-portions.
 155  */
 156 #define svn_urlpath__basename             svn_fspath__basename
 157 #define svn_urlpath__dirname              svn_fspath__dirname
 158 #define svn_urlpath__get_longest_ancestor svn_fspath__get_longest_ancestor
 159 #define svn_urlpath__is_canonical         svn_fspath__is_canonical
 160 #define svn_urlpath__is_root              svn_fspath__is_root
 161 #define svn_urlpath__join                 svn_fspath__join
 162 #define svn_urlpath__skip_ancestor        svn_fspath__skip_ancestor
 163 #define svn_urlpath__split                svn_fspath__split
 164
 165 /* Like svn_fspath__canonicalize(), but this one accepts both full
 166    URLs and URL path-portions. */
 167 const char *
 168 svn_urlpath__canonicalize(const char *uri, apr_pool_t *pool);
 169
 170
 171 #ifdef __cplusplus
 172 }
 173 #endif /* __cplusplus */
 174
 175 #endif /* SVN_FSPATH_H */