File: cat.c

package info (click to toggle)
subversion 1.8.10-6+deb8u6
  • links: PTS, VCS
  • area: main
  • in suites: jessie
  • size: 62,080 kB
  • sloc: ansic: 795,684; python: 115,859; java: 17,742; sh: 13,590; ruby: 12,397; cpp: 11,206; lisp: 7,540; perl: 5,649; sql: 1,466; makefile: 1,110; xml: 577
file content (308 lines) | stat: -rw-r--r-- 11,388 bytes parent folder | download | duplicates (4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
/*
 * cat.c:  implementation of the 'cat' command
 *
 * ====================================================================
 *    Licensed to the Apache Software Foundation (ASF) under one
 *    or more contributor license agreements.  See the NOTICE file
 *    distributed with this work for additional information
 *    regarding copyright ownership.  The ASF licenses this file
 *    to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing,
 *    software distributed under the License is distributed on an
 *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *    KIND, either express or implied.  See the License for the
 *    specific language governing permissions and limitations
 *    under the License.
 * ====================================================================
 */

/* ==================================================================== */



/*** Includes. ***/

#include "svn_hash.h"
#include "svn_client.h"
#include "svn_string.h"
#include "svn_error.h"
#include "svn_subst.h"
#include "svn_io.h"
#include "svn_time.h"
#include "svn_dirent_uri.h"
#include "svn_path.h"
#include "svn_props.h"
#include "client.h"

#include "svn_private_config.h"
#include "private/svn_wc_private.h"


/*** Code. ***/

svn_error_t *
svn_client__get_normalized_stream(svn_stream_t **normal_stream,
                                  svn_wc_context_t *wc_ctx,
                                  const char *local_abspath,
                                  const svn_opt_revision_t *revision,
                                  svn_boolean_t expand_keywords,
                                  svn_boolean_t normalize_eols,
                                  svn_cancel_func_t cancel_func,
                                  void *cancel_baton,
                                  apr_pool_t *result_pool,
                                  apr_pool_t *scratch_pool)
{
  apr_hash_t *kw = NULL;
  svn_subst_eol_style_t style;
  apr_hash_t *props;
  svn_string_t *eol_style, *keywords, *special;
  const char *eol = NULL;
  svn_boolean_t local_mod = FALSE;
  svn_stream_t *input;
  svn_node_kind_t kind;

  SVN_ERR_ASSERT(SVN_CLIENT__REVKIND_IS_LOCAL_TO_WC(revision->kind));

  SVN_ERR(svn_wc_read_kind2(&kind, wc_ctx, local_abspath,
                            (revision->kind != svn_opt_revision_working),
                            FALSE, scratch_pool));

  if (kind == svn_node_unknown || kind == svn_node_none)
    return svn_error_createf(SVN_ERR_UNVERSIONED_RESOURCE, NULL,
                             _("'%s' is not under version control"),
                             svn_dirent_local_style(local_abspath,
                                                    scratch_pool));
  if (kind != svn_node_file)
    return svn_error_createf(SVN_ERR_CLIENT_IS_DIRECTORY, NULL,
                             _("'%s' refers to a directory"),
                             svn_dirent_local_style(local_abspath,
                                                    scratch_pool));

  if (revision->kind != svn_opt_revision_working)
    {
      SVN_ERR(svn_wc_get_pristine_contents2(&input, wc_ctx, local_abspath,
                                            result_pool, scratch_pool));
      if (input == NULL)
        return svn_error_createf(SVN_ERR_ILLEGAL_TARGET, NULL,
                 _("'%s' has no pristine version until it is committed"),
                 svn_dirent_local_style(local_abspath, scratch_pool));

      SVN_ERR(svn_wc_get_pristine_props(&props, wc_ctx, local_abspath,
                                        scratch_pool, scratch_pool));
    }
  else
    {
      svn_wc_status3_t *status;

      SVN_ERR(svn_stream_open_readonly(&input, local_abspath, scratch_pool,
                                       result_pool));

      SVN_ERR(svn_wc_prop_list2(&props, wc_ctx, local_abspath, scratch_pool,
                                scratch_pool));
      SVN_ERR(svn_wc_status3(&status, wc_ctx, local_abspath, scratch_pool,
                             scratch_pool));
      if (status->node_status != svn_wc_status_normal)
        local_mod = TRUE;
    }

  eol_style = svn_hash_gets(props, SVN_PROP_EOL_STYLE);
  keywords = svn_hash_gets(props, SVN_PROP_KEYWORDS);
  special = svn_hash_gets(props, SVN_PROP_SPECIAL);

  if (eol_style)
    svn_subst_eol_style_from_value(&style, &eol, eol_style->data);

  if (keywords)
    {
      svn_revnum_t changed_rev;
      const char *rev_str;
      const char *author;
      const char *url;
      apr_time_t tm;
      const char *repos_root_url;
      const char *repos_relpath;

      SVN_ERR(svn_wc__node_get_changed_info(&changed_rev, &tm, &author, wc_ctx,
                                            local_abspath, scratch_pool,
                                            scratch_pool));
      SVN_ERR(svn_wc__node_get_repos_info(NULL, &repos_relpath, &repos_root_url,
                                          NULL,
                                          wc_ctx, local_abspath, scratch_pool,
                                          scratch_pool));
      url = svn_path_url_add_component2(repos_root_url, repos_relpath,
                                        scratch_pool);

      if (local_mod)
        {
          /* For locally modified files, we'll append an 'M'
             to the revision number, and set the author to
             "(local)" since we can't always determine the
             current user's username */
          rev_str = apr_psprintf(scratch_pool, "%ldM", changed_rev);
          author = _("(local)");

          if (! special)
            {
              /* Use the modified time from the working copy for files */
              SVN_ERR(svn_io_file_affected_time(&tm, local_abspath,
                                                scratch_pool));
            }
        }
      else
        {
          rev_str = apr_psprintf(scratch_pool, "%ld", changed_rev);
        }

      SVN_ERR(svn_subst_build_keywords3(&kw, keywords->data, rev_str, url,
                                        repos_root_url, tm, author,
                                        scratch_pool));
    }

  /* Wrap the output stream if translation is needed. */
  if (eol != NULL || kw != NULL)
    input = svn_subst_stream_translated(
      input,
      (eol_style && normalize_eols) ? SVN_SUBST_NATIVE_EOL_STR : eol,
      FALSE, kw, expand_keywords, result_pool);

  *normal_stream = input;

  return SVN_NO_ERROR;
}

svn_error_t *
svn_client_cat2(svn_stream_t *out,
                const char *path_or_url,
                const svn_opt_revision_t *peg_revision,
                const svn_opt_revision_t *revision,
                svn_client_ctx_t *ctx,
                apr_pool_t *pool)
{
  svn_ra_session_t *ra_session;
  svn_client__pathrev_t *loc;
  svn_string_t *eol_style;
  svn_string_t *keywords;
  apr_hash_t *props;
  const char *repos_root_url;
  svn_stream_t *output = out;
  svn_error_t *err;

  /* ### Inconsistent default revision logic in this command. */
  if (peg_revision->kind == svn_opt_revision_unspecified)
    {
      peg_revision = svn_cl__rev_default_to_head_or_working(peg_revision,
                                                            path_or_url);
      revision = svn_cl__rev_default_to_head_or_base(revision, path_or_url);
    }
  else
    {
      peg_revision = svn_cl__rev_default_to_head_or_working(peg_revision,
                                                            path_or_url);
      revision = svn_cl__rev_default_to_peg(revision, peg_revision);
    }

  if (! svn_path_is_url(path_or_url)
      && SVN_CLIENT__REVKIND_IS_LOCAL_TO_WC(peg_revision->kind)
      && SVN_CLIENT__REVKIND_IS_LOCAL_TO_WC(revision->kind))
    {
      const char *local_abspath;
      svn_stream_t *normal_stream;

      SVN_ERR(svn_dirent_get_absolute(&local_abspath, path_or_url, pool));
      SVN_ERR(svn_client__get_normalized_stream(&normal_stream, ctx->wc_ctx,
                                            local_abspath, revision, TRUE, FALSE,
                                            ctx->cancel_func, ctx->cancel_baton,
                                            pool, pool));

      /* We don't promise to close output, so disown it to ensure we don't. */
      output = svn_stream_disown(output, pool);

      return svn_error_trace(svn_stream_copy3(normal_stream, output,
                                              ctx->cancel_func,
                                              ctx->cancel_baton, pool));
    }

  /* Get an RA plugin for this filesystem object. */
  SVN_ERR(svn_client__ra_session_from_path2(&ra_session, &loc,
                                            path_or_url, NULL,
                                            peg_revision,
                                            revision, ctx, pool));

  /* Find the repos root URL */
  SVN_ERR(svn_ra_get_repos_root2(ra_session, &repos_root_url, pool));

  /* Grab some properties we need to know in order to figure out if anything
     special needs to be done with this file. */
  err = svn_ra_get_file(ra_session, "", loc->rev, NULL, NULL, &props, pool);
  if (err)
    {
      if (err->apr_err == SVN_ERR_FS_NOT_FILE)
        {
          return svn_error_createf(SVN_ERR_CLIENT_IS_DIRECTORY, err,
                                   _("URL '%s' refers to a directory"),
                                   loc->url);
        }
      else
        {
          return svn_error_trace(err);
        }
    }

  eol_style = svn_hash_gets(props, SVN_PROP_EOL_STYLE);
  keywords = svn_hash_gets(props, SVN_PROP_KEYWORDS);

  if (eol_style || keywords)
    {
      /* It's a file with no special eol style or keywords. */
      svn_subst_eol_style_t eol;
      const char *eol_str;
      apr_hash_t *kw;

      if (eol_style)
        svn_subst_eol_style_from_value(&eol, &eol_str, eol_style->data);
      else
        {
          eol = svn_subst_eol_style_none;
          eol_str = NULL;
        }


      if (keywords)
        {
          svn_string_t *cmt_rev, *cmt_date, *cmt_author;
          apr_time_t when = 0;

          cmt_rev = svn_hash_gets(props, SVN_PROP_ENTRY_COMMITTED_REV);
          cmt_date = svn_hash_gets(props, SVN_PROP_ENTRY_COMMITTED_DATE);
          cmt_author = svn_hash_gets(props, SVN_PROP_ENTRY_LAST_AUTHOR);
          if (cmt_date)
            SVN_ERR(svn_time_from_cstring(&when, cmt_date->data, pool));

          SVN_ERR(svn_subst_build_keywords3(&kw, keywords->data,
                                            cmt_rev->data, loc->url,
                                            repos_root_url, when,
                                            cmt_author ?
                                              cmt_author->data : NULL,
                                            pool));
        }
      else
        kw = NULL;

      /* Interject a translating stream */
      output = svn_subst_stream_translated(svn_stream_disown(out, pool),
                                           eol_str, FALSE, kw, TRUE, pool);
    }

  SVN_ERR(svn_ra_get_file(ra_session, "", loc->rev, output, NULL, NULL, pool));

  if (out != output)
    /* Close the interjected stream */
    SVN_ERR(svn_stream_close(output));

  return SVN_NO_ERROR;
}