Subversion
svn_opt.h
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00001 /**
00002  * @copyright
00003  * ====================================================================
00004  *    Licensed to the Apache Software Foundation (ASF) under one
00005  *    or more contributor license agreements.  See the NOTICE file
00006  *    distributed with this work for additional information
00007  *    regarding copyright ownership.  The ASF licenses this file
00008  *    to you under the Apache License, Version 2.0 (the
00009  *    "License"); you may not use this file except in compliance
00010  *    with the License.  You may obtain a copy of the License at
00011  *
00012  *      http://www.apache.org/licenses/LICENSE-2.0
00013  *
00014  *    Unless required by applicable law or agreed to in writing,
00015  *    software distributed under the License is distributed on an
00016  *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
00017  *    KIND, either express or implied.  See the License for the
00018  *    specific language governing permissions and limitations
00019  *    under the License.
00020  * ====================================================================
00021  * @endcopyright
00022  *
00023  * @file svn_opt.h
00024  * @brief Option and argument parsing for Subversion command lines
00025  */
00026 
00027 #ifndef SVN_OPTS_H
00028 #define SVN_OPTS_H
00029 
00030 #include <apr.h>
00031 #include <apr_pools.h>
00032 #include <apr_getopt.h>
00033 #include <apr_tables.h>
00034 #include <apr_hash.h>
00035 
00036 #ifndef DOXYGEN_SHOULD_SKIP_THIS
00037 #define APR_WANT_STDIO
00038 #endif
00039 #include <apr_want.h>   /* for FILE* */
00040 
00041 #include "svn_types.h"
00042 
00043 #ifdef __cplusplus
00044 extern "C" {
00045 #endif /* __cplusplus */
00046 
00047 
00048 
00049 /**
00050  * All subcommand procedures in Subversion conform to this prototype.
00051  *
00052  * @a os is the apr option state after getopt processing has been run; in
00053  * other words, it still contains the non-option arguments following
00054  * the subcommand.  See @a os->argv and @a os->ind.
00055  *
00056  * @a baton is anything you need it to be.
00057  *
00058  * @a pool is used for allocating errors, and for any other allocation
00059  * unless the instance is explicitly documented to allocate from a
00060  * pool in @a baton.
00061  */
00062 typedef svn_error_t *(svn_opt_subcommand_t)(
00063   apr_getopt_t *os, void *baton, apr_pool_t *pool);
00064 
00065 
00066 /** The maximum number of aliases a subcommand can have. */
00067 #define SVN_OPT_MAX_ALIASES 3
00068 
00069 /** The maximum number of options that can be accepted by a subcommand. */
00070 #define SVN_OPT_MAX_OPTIONS 50
00071 
00072 /** Options that have no short option char should use an identifying
00073  * integer equal to or greater than this.
00074  */
00075 #define SVN_OPT_FIRST_LONGOPT_ID 256
00076 
00077 
00078 /** One element of a subcommand dispatch table.
00079  *
00080  * @since New in 1.4.
00081  */
00082 typedef struct svn_opt_subcommand_desc2_t
00083 {
00084   /** The full name of this command. */
00085   const char *name;
00086 
00087   /** The function this command invokes. */
00088   svn_opt_subcommand_t *cmd_func;
00089 
00090   /** A list of alias names for this command (e.g., 'up' for 'update'). */
00091   const char *aliases[SVN_OPT_MAX_ALIASES];
00092 
00093   /** A brief string describing this command, for usage messages. */
00094   const char *help;
00095 
00096   /** A list of options accepted by this command.  Each value in the
00097    * array is a unique enum (the 2nd field in apr_getopt_option_t)
00098    */
00099   int valid_options[SVN_OPT_MAX_OPTIONS];
00100 
00101   /** A list of option help descriptions, keyed by the option unique enum
00102    * (the 2nd field in apr_getopt_option_t), which override the generic
00103    * descriptions given in an apr_getopt_option_t on a per-subcommand basis.
00104    */
00105   struct { int optch; const char *desc; } desc_overrides[SVN_OPT_MAX_OPTIONS];
00106 } svn_opt_subcommand_desc2_t;
00107 
00108 
00109 /** One element of a subcommand dispatch table.
00110  *
00111  * @deprecated Provided for backward compatibility with the 1.3 API.
00112  *
00113  * Like #svn_opt_subcommand_desc2_t but lacking the @c desc_overrides
00114  * member.
00115  */
00116 typedef struct svn_opt_subcommand_desc_t
00117 {
00118   /** The full name of this command. */
00119   const char *name;
00120 
00121   /** The function this command invokes. */
00122   svn_opt_subcommand_t *cmd_func;
00123 
00124   /** A list of alias names for this command (e.g., 'up' for 'update'). */
00125   const char *aliases[SVN_OPT_MAX_ALIASES];
00126 
00127   /** A brief string describing this command, for usage messages. */
00128   const char *help;
00129 
00130   /** A list of options accepted by this command.  Each value in the
00131    * array is a unique enum (the 2nd field in apr_getopt_option_t)
00132    */
00133   int valid_options[SVN_OPT_MAX_OPTIONS];
00134 
00135 } svn_opt_subcommand_desc_t;
00136 
00137 
00138 /**
00139  * Return the entry in @a table whose name matches @a cmd_name, or @c NULL if
00140  * none.  @a cmd_name may be an alias.
00141  *
00142  * @since New in 1.4.
00143  */
00144 const svn_opt_subcommand_desc2_t *
00145 svn_opt_get_canonical_subcommand2(const svn_opt_subcommand_desc2_t *table,
00146                                   const char *cmd_name);
00147 
00148 
00149 /**
00150  * Return the entry in @a table whose name matches @a cmd_name, or @c NULL if
00151  * none.  @a cmd_name may be an alias.
00152  *
00153  * Same as svn_opt_get_canonical_subcommand2(), but acts on
00154  * #svn_opt_subcommand_desc_t.
00155  *
00156  * @deprecated Provided for backward compatibility with the 1.3 API.
00157  */
00158 SVN_DEPRECATED
00159 const svn_opt_subcommand_desc_t *
00160 svn_opt_get_canonical_subcommand(const svn_opt_subcommand_desc_t *table,
00161                                  const char *cmd_name);
00162 
00163 
00164 /**
00165  * Return pointer to an @c apr_getopt_option_t for the option whose
00166  * option code is @a code, or @c NULL if no match.  @a option_table must end
00167  * with an element whose every field is zero.  If @a command is non-NULL,
00168  * then return the subcommand-specific option description instead of the
00169  * generic one, if a specific description is defined.
00170  *
00171  * The returned value may be statically allocated, or allocated in @a pool.
00172  *
00173  * @since New in 1.4.
00174  */
00175 const apr_getopt_option_t *
00176 svn_opt_get_option_from_code2(int code,
00177                               const apr_getopt_option_t *option_table,
00178                               const svn_opt_subcommand_desc2_t *command,
00179                               apr_pool_t *pool);
00180 
00181 
00182 /**
00183  * Return the first entry from @a option_table whose option code is @a code,
00184  * or @c NULL if no match.  @a option_table must end with an element whose
00185  * every field is zero.
00186  *
00187  * @deprecated Provided for backward compatibility with the 1.3 API.
00188  */
00189 SVN_DEPRECATED
00190 const apr_getopt_option_t *
00191 svn_opt_get_option_from_code(int code,
00192                              const apr_getopt_option_t *option_table);
00193 
00194 
00195 /**
00196  * Return @c TRUE iff subcommand @a command supports option @a
00197  * option_code, else return @c FALSE.  If @a global_options is
00198  * non-NULL, it is a zero-terminated array, and all subcommands take
00199  * the options listed in it.
00200  *
00201  * @since New in 1.5.
00202  */
00203 svn_boolean_t
00204 svn_opt_subcommand_takes_option3(const svn_opt_subcommand_desc2_t *command,
00205                                  int option_code,
00206                                  const int *global_options);
00207 
00208 /**
00209  * Same as svn_opt_subcommand_takes_option3(), but with @c NULL for @a
00210  * global_options.
00211  *
00212  * @deprecated Provided for backward compatibility with the 1.4 API.
00213  */
00214 SVN_DEPRECATED
00215 svn_boolean_t
00216 svn_opt_subcommand_takes_option2(const svn_opt_subcommand_desc2_t *command,
00217                                  int option_code);
00218 
00219 
00220 /**
00221  * Return @c TRUE iff subcommand @a command supports option @a option_code,
00222  * else return @c FALSE.
00223  *
00224  * Same as svn_opt_subcommand_takes_option2(), but acts on
00225  * #svn_opt_subcommand_desc_t.
00226  *
00227  * @deprecated Provided for backward compatibility with the 1.3 API.
00228  */
00229 SVN_DEPRECATED
00230 svn_boolean_t
00231 svn_opt_subcommand_takes_option(const svn_opt_subcommand_desc_t *command,
00232                                 int option_code);
00233 
00234 
00235 /**
00236  * Print a generic (not command-specific) usage message to @a stream.
00237  *
00238  * ### @todo Why is @a stream a stdio file instead of an svn stream?
00239  *
00240  * If @a header is non-NULL, print @a header followed by a newline.  Then
00241  * loop over @a cmd_table printing the usage for each command (getting
00242  * option usages from @a opt_table).  Then if @a footer is non-NULL, print
00243  * @a footer followed by a newline.
00244  *
00245  * Use @a pool for temporary allocation.
00246  *
00247  * @since New in 1.4.
00248  */
00249 void
00250 svn_opt_print_generic_help2(const char *header,
00251                             const svn_opt_subcommand_desc2_t *cmd_table,
00252                             const apr_getopt_option_t *opt_table,
00253                             const char *footer,
00254                             apr_pool_t *pool,
00255                             FILE *stream);
00256 
00257 
00258 /**
00259  * Same as svn_opt_print_generic_help2(), but acts on
00260  * #svn_opt_subcommand_desc_t.
00261  *
00262  * @deprecated Provided for backward compatibility with the 1.3 API.
00263  */
00264 SVN_DEPRECATED
00265 void
00266 svn_opt_print_generic_help(const char *header,
00267                            const svn_opt_subcommand_desc_t *cmd_table,
00268                            const apr_getopt_option_t *opt_table,
00269                            const char *footer,
00270                            apr_pool_t *pool,
00271                            FILE *stream);
00272 
00273 
00274 /**
00275  * Print an option @a opt nicely into a @a string allocated in @a pool.
00276  * If @a doc is set, include the generic documentation string of @a opt,
00277  * localized to the current locale if a translation is available.
00278  */
00279 void
00280 svn_opt_format_option(const char **string,
00281                       const apr_getopt_option_t *opt,
00282                       svn_boolean_t doc,
00283                       apr_pool_t *pool);
00284 
00285 
00286 
00287 /**
00288  * Get @a subcommand's usage from @a table, and print it to @c stdout.
00289  * Obtain option usage from @a options_table.  If not @c NULL, @a
00290  * global_options is a zero-terminated list of global options.  Use @a
00291  * pool for temporary allocation.  @a subcommand may be a canonical
00292  * command name or an alias.  ### @todo Why does this only print to
00293  * @c stdout, whereas svn_opt_print_generic_help() gives us a choice?
00294  *
00295  * When printing the description of an option, if the same option code
00296  * appears a second time in @a options_table with a different name, then
00297  * use that second name as an alias for the first name.  This additional
00298  * behaviour is new in 1.7.
00299  *
00300  * @since New in 1.5.
00301  */
00302 void
00303 svn_opt_subcommand_help3(const char *subcommand,
00304                          const svn_opt_subcommand_desc2_t *table,
00305                          const apr_getopt_option_t *options_table,
00306                          const int *global_options,
00307                          apr_pool_t *pool);
00308 
00309 /**
00310  * Same as svn_opt_subcommand_help3(), but with @a global_options
00311  * always NULL.
00312  *
00313  * @deprecated Provided for backward compatibility with the 1.4 API.
00314  */
00315 SVN_DEPRECATED
00316 void
00317 svn_opt_subcommand_help2(const char *subcommand,
00318                          const svn_opt_subcommand_desc2_t *table,
00319                          const apr_getopt_option_t *options_table,
00320                          apr_pool_t *pool);
00321 
00322 
00323 /**
00324  * Same as svn_opt_subcommand_help2(), but acts on
00325  * #svn_opt_subcommand_desc_t.
00326  *
00327  * @deprecated Provided for backward compatibility with the 1.3 API.
00328  */
00329 SVN_DEPRECATED
00330 void
00331 svn_opt_subcommand_help(const char *subcommand,
00332                         const svn_opt_subcommand_desc_t *table,
00333                         const apr_getopt_option_t *options_table,
00334                         apr_pool_t *pool);
00335 
00336 
00337 
00338 /* Parsing revision and date options. */
00339 
00340 /**
00341  * Various ways of specifying revisions.
00342  *
00343  * @note
00344  * In contexts where local mods are relevant, the `working' kind
00345  * refers to the uncommitted "working" revision, which may be modified
00346  * with respect to its base revision.  In other contexts, `working'
00347  * should behave the same as `committed' or `current'.
00348  */
00349 enum svn_opt_revision_kind {
00350   /** No revision information given. */
00351   svn_opt_revision_unspecified,
00352 
00353   /** revision given as number */
00354   svn_opt_revision_number,
00355 
00356   /** revision given as date */
00357   svn_opt_revision_date,
00358 
00359   /** rev of most recent change */
00360   svn_opt_revision_committed,
00361 
00362   /** (rev of most recent change) - 1 */
00363   svn_opt_revision_previous,
00364 
00365   /** .svn/entries current revision */
00366   svn_opt_revision_base,
00367 
00368   /** current, plus local mods */
00369   svn_opt_revision_working,
00370 
00371   /** repository youngest */
00372   svn_opt_revision_head
00373 
00374   /* please update svn_opt__revision_to_string() when extending this enum */
00375 };
00376 
00377 /**
00378  * A revision value, which can be specified as a number or a date.
00379  *
00380  * @note This union was formerly an anonymous inline type in
00381  * @c svn_opt_revision_t, and was converted to a named type just to
00382  * make things easier for SWIG.
00383  *
00384  * @since New in 1.3.
00385  */
00386 typedef union svn_opt_revision_value_t
00387 {
00388   /** The revision number */
00389   svn_revnum_t number;
00390 
00391   /** the date of the revision */
00392   apr_time_t date;
00393 } svn_opt_revision_value_t;
00394 
00395 /** A revision, specified in one of @c svn_opt_revision_kind ways. */
00396 typedef struct svn_opt_revision_t
00397 {
00398   enum svn_opt_revision_kind kind;  /**< See svn_opt_revision_kind */
00399   svn_opt_revision_value_t value;   /**< Extra data qualifying the @c kind */
00400 } svn_opt_revision_t;
00401 
00402 /** A revision range, specified in one of @c svn_opt_revision_kind ways. */
00403 typedef struct svn_opt_revision_range_t
00404 {
00405   /** The first revision in the range */
00406   svn_opt_revision_t start;
00407 
00408   /** The last revision in the range */
00409   svn_opt_revision_t end;
00410 } svn_opt_revision_range_t;
00411 
00412 /**
00413  * Set @a *start_revision and/or @a *end_revision according to @a arg,
00414  * where @a arg is "N" or "N:M", like so:
00415  *
00416  *    - If @a arg is "N", set @a *start_revision to represent N, and
00417  *      leave @a *end_revision untouched.
00418  *
00419  *    - If @a arg is "N:M", set @a *start_revision and @a *end_revision
00420  *      to represent N and M respectively.
00421  *
00422  * N and/or M may be one of the special revision descriptors
00423  * recognized by revision_from_word(), or a date in curly braces.
00424  *
00425  * If @a arg is invalid, return -1; else return 0.
00426  * It is invalid to omit a revision (as in, ":", "N:" or ":M").
00427  *
00428  * @note It is typical, though not required, for @a *start_revision and
00429  * @a *end_revision to be @c svn_opt_revision_unspecified kind on entry.
00430  *
00431  * Use @a pool for temporary allocations.
00432  */
00433 int
00434 svn_opt_parse_revision(svn_opt_revision_t *start_revision,
00435                        svn_opt_revision_t *end_revision,
00436                        const char *arg,
00437                        apr_pool_t *pool);
00438 
00439 /**
00440  * Parse @a arg, where @a arg is "N" or "N:M", into a
00441  * @c svn_opt_revision_range_t and push that onto @a opt_ranges.
00442  *
00443  *    - If @a arg is "N", set the @c start field of the
00444  *      @c svn_opt_revision_range_t to represent N and the @c end field
00445  *      to @c svn_opt_revision_unspecified.
00446  *
00447  *    - If @a arg is "N:M", set the @c start field of the
00448  *      @c svn_opt_revision_range_t to represent N and the @c end field
00449  *      to represent M.
00450  *
00451  * If @a arg is invalid, return -1; else return 0.  It is invalid to omit
00452  * a revision (as in, ":", "N:" or ":M").
00453  *
00454  * Use @a pool to allocate @c svn_opt_revision_range_t pushed to the array.
00455  *
00456  * @since New in 1.5.
00457  */
00458 int
00459 svn_opt_parse_revision_to_range(apr_array_header_t *opt_ranges,
00460                                 const char *arg,
00461                                 apr_pool_t *pool);
00462 
00463 /**
00464  * Resolve peg revisions and operational revisions in the following way:
00465  *
00466  *    - If @a is_url is set and @a peg_rev->kind is
00467  *      @c svn_opt_revision_unspecified, @a peg_rev->kind defaults to
00468  *      @c svn_opt_revision_head.
00469  *
00470  *    - If @a is_url is not set, and @a peg_rev->kind is
00471  *      @c svn_opt_revision_unspecified, @a peg_rev->kind defaults to
00472  *      @c svn_opt_revision_base.
00473  *
00474  *    - If @a op_rev->kind is @c svn_opt_revision_unspecified, @a op_rev
00475  *      defaults to @a peg_rev.
00476  *
00477  * Both @a peg_rev and @a op_rev may be modified as a result of this
00478  * function.  @a is_url should be set if the path the revisions refer to is
00479  * a url, and unset otherwise.
00480  *
00481  * If @a notice_local_mods is set, @c svn_opt_revision_working is used,
00482  * instead of @c svn_opt_revision_base.
00483  *
00484  * Use @a pool for allocations.
00485  *
00486  * @since New in 1.5.
00487  */
00488 svn_error_t *
00489 svn_opt_resolve_revisions(svn_opt_revision_t *peg_rev,
00490                           svn_opt_revision_t *op_rev,
00491                           svn_boolean_t is_url,
00492                           svn_boolean_t notice_local_mods,
00493                           apr_pool_t *pool);
00494 
00495 
00496 /* Parsing arguments. */
00497 
00498 /**
00499  * Pull remaining target arguments from @a os into @a *targets_p,
00500  * converting them to UTF-8, followed by targets from @a known_targets
00501  * (which might come from, for example, the "--targets" command line
00502  * option), which are already in UTF-8.
00503  *
00504  * On each URL target, do some IRI-to-URI encoding and some
00505  * auto-escaping.  On each local path, canonicalize case and path
00506  * separators.
00507  *
00508  * Allocate @a *targets_p and its elements in @a pool.
00509  *
00510  * If a path has the same name as a Subversion working copy
00511  * administrative directory, return SVN_ERR_RESERVED_FILENAME_SPECIFIED;
00512  * if multiple reserved paths are encountered, return a chain of
00513  * errors, all of which are SVN_ERR_RESERVED_FILENAME_SPECIFIED.  Do
00514  * not return this type of error in a chain with any other type of
00515  * error, and if this is the only type of error encountered, complete
00516  * the operation before returning the error(s).
00517  *
00518  * @deprecated Provided for backward compatibility with the 1.5 API.
00519  * @see svn_client_args_to_target_array()
00520  */
00521 SVN_DEPRECATED
00522 svn_error_t *
00523 svn_opt_args_to_target_array3(apr_array_header_t **targets_p,
00524                               apr_getopt_t *os,
00525                               const apr_array_header_t *known_targets,
00526                               apr_pool_t *pool);
00527 
00528 /**
00529  * This is the same as svn_opt_args_to_target_array3() except that it
00530  * silently ignores paths that have the same name as a working copy
00531  * administrative directory.
00532  *
00533  * @since New in 1.2.
00534  *
00535  * @deprecated Provided for backward compatibility with the 1.4 API.
00536  */
00537 SVN_DEPRECATED
00538 svn_error_t *
00539 svn_opt_args_to_target_array2(apr_array_header_t **targets_p,
00540                               apr_getopt_t *os,
00541                               const apr_array_header_t *known_targets,
00542                               apr_pool_t *pool);
00543 
00544 
00545 /**
00546  * The same as svn_opt_args_to_target_array2() except that, in
00547  * addition, if @a extract_revisions is set, then look for trailing
00548  * "@rev" syntax on the first two paths.  If the first target in @a
00549  * *targets_p ends in "@rev", replace it with a canonicalized version of
00550  * the part before "@rev" and replace @a *start_revision with the value
00551  * of "rev".  If the second target in @a *targets_p ends in "@rev",
00552  * replace it with a canonicalized version of the part before "@rev"
00553  * and replace @a *end_revision with the value of "rev".  Ignore
00554  * revision specifiers on any further paths.  "rev" can be any form of
00555  * single revision specifier, as accepted by svn_opt_parse_revision().
00556  *
00557  * @deprecated Provided for backward compatibility with the 1.1 API.
00558  */
00559 SVN_DEPRECATED
00560 svn_error_t *
00561 svn_opt_args_to_target_array(apr_array_header_t **targets_p,
00562                              apr_getopt_t *os,
00563                              const apr_array_header_t *known_targets,
00564                              svn_opt_revision_t *start_revision,
00565                              svn_opt_revision_t *end_revision,
00566                              svn_boolean_t extract_revisions,
00567                              apr_pool_t *pool);
00568 
00569 
00570 /**
00571  * Parse revprop key/value pair from @a revprop_spec (name[=value]) into
00572  * @a revprops, making copies of both with @a pool.  If @a revprops is
00573  * @c NULL, allocate a new apr_hash_t in it.  @a revprops maps
00574  * const char * revprop names to svn_string_t * revprop values for use
00575  * with svn_repos_get_commit_editor5 and other get_commit_editor APIs.
00576  *
00577  * @since New in 1.6.
00578  */
00579 svn_error_t *
00580 svn_opt_parse_revprop(apr_hash_t **revprops, const char *revprop_spec,
00581                       apr_pool_t *pool);
00582 
00583 
00584 /**
00585  * If no targets exist in @a *targets, add `.' as the lone target.
00586  *
00587  * (Some commands take an implicit "." string argument when invoked
00588  * with no arguments. Those commands make use of this function to
00589  * add "." to the target array if the user passes no args.)
00590  */
00591 void
00592 svn_opt_push_implicit_dot_target(apr_array_header_t *targets,
00593                                  apr_pool_t *pool);
00594 
00595 
00596 /**
00597  * Parse @a num_args non-target arguments from the list of arguments in
00598  * @a os->argv, return them as <tt>const char *</tt> in @a *args_p, without
00599  * doing any UTF-8 conversion.  Allocate @a *args_p and its values in @a pool.
00600  */
00601 svn_error_t *
00602 svn_opt_parse_num_args(apr_array_header_t **args_p,
00603                        apr_getopt_t *os,
00604                        int num_args,
00605                        apr_pool_t *pool);
00606 
00607 
00608 /**
00609  * Parse all remaining arguments from @a os->argv, return them as
00610  * <tt>const char *</tt> in @a *args_p, without doing any UTF-8 conversion.
00611  * Allocate @a *args_p and its values in @a pool.
00612  */
00613 svn_error_t *
00614 svn_opt_parse_all_args(apr_array_header_t **args_p,
00615                        apr_getopt_t *os,
00616                        apr_pool_t *pool);
00617 
00618 /**
00619  * Parse a working-copy path or URL in @a path, extracting any trailing
00620  * revision specifier of the form "@rev" from the last component of
00621  * the path.
00622  *
00623  * Some examples would be:
00624  *
00625  *   - "foo/bar"                      -> "foo/bar",       (unspecified)
00626  *   - "foo/bar@13"                   -> "foo/bar",       (number, 13)
00627  *   - "foo/bar@HEAD"                 -> "foo/bar",       (head)
00628  *   - "foo/bar@{1999-12-31}"         -> "foo/bar",       (date, 1999-12-31)
00629  *   - "http://a/b@27"                -> "http://a/b",    (number, 27)
00630  *   - "http://a/b@COMMITTED"         -> "http://a/b",    (committed) [*]
00631  *   - "http://a/b@{1999-12-31}"      -> "http://a/b",    (date, 1999-12-31)
00632  *   - "http://a/b@%7B1999-12-31%7D"  -> "http://a/b",    (date, 1999-12-31)
00633  *   - "foo/bar@1:2"                  -> error
00634  *   - "foo/bar@baz"                  -> error
00635  *   - "foo/bar@"                     -> "foo/bar",       (unspecified)
00636  *   - "foo/@bar@"                    -> "foo/@bar",      (unspecified)
00637  *   - "foo/bar/@13"                  -> "foo/bar/",      (number, 13)
00638  *   - "foo/bar@@13"                  -> "foo/bar@",      (number, 13)
00639  *   - "foo/@bar@HEAD"                -> "foo/@bar",      (head)
00640  *   - "foo@/bar"                     -> "foo@/bar",      (unspecified)
00641  *   - "foo@HEAD/bar"                 -> "foo@HEAD/bar",  (unspecified)
00642  *   - "@foo/bar"                     -> "@foo/bar",      (unspecified)
00643  *   - "@foo/bar@"                    -> "@foo/bar",      (unspecified)
00644  *
00645  *   [*] Syntactically valid but probably not semantically useful.
00646  *
00647  * If a trailing revision specifier is found, parse it into @a *rev and
00648  * put the rest of the path into @a *truepath, allocating from @a pool;
00649  * or return an @c SVN_ERR_CL_ARG_PARSING_ERROR (with the effect on
00650  * @a *truepath undefined) if the revision specifier is invalid.
00651  * If no trailing revision specifier is found, set @a *truepath to
00652  * @a path and @a rev->kind to @c svn_opt_revision_unspecified.
00653  *
00654  * This function does not require that @a path be in canonical form.
00655  * No canonicalization is done and @a *truepath will only be in
00656  * canonical form if @a path is in canonical form.
00657  *
00658  * @since New in 1.1.
00659  */
00660 svn_error_t *
00661 svn_opt_parse_path(svn_opt_revision_t *rev,
00662                    const char **truepath,
00663                    const char *path,
00664                    apr_pool_t *pool);
00665 
00666 /**
00667  * Central dispatcher function for various kinds of help message.
00668  * Prints one of:
00669  *   * subcommand-specific help (svn_opt_subcommand_help)
00670  *   * generic help (svn_opt_print_generic_help)
00671  *   * version info
00672  *   * simple usage complaint: "Type '@a pgm_name help' for usage."
00673  *
00674  * If @a os is not @c NULL and it contains arguments, then try
00675  * printing help for them as though they are subcommands, using @a
00676  * cmd_table and @a option_table for option information.  If not @c
00677  * NULL, @a global_options is a zero-terminated array of options taken
00678  * by all subcommands.
00679  *
00680  * Else, if @a print_version is TRUE, then print version info, in
00681  * brief form if @a quiet is also TRUE; if @a quiet is FALSE, then if
00682  * @a version_footer is non-NULL, print it following the version
00683  * information.
00684  *
00685  * Else, if @a os is not @c NULL and does not contain arguments, print
00686  * generic help, via svn_opt_print_generic_help2() with the @a header,
00687  * @a cmd_table, @a option_table, and @a footer arguments.
00688  *
00689  * Else, when @a os is @c NULL, print the simple usage complaint.
00690  *
00691  * Use @a pool for temporary allocations.
00692  *
00693  * Notes: The reason this function handles both version printing and
00694  * general usage help is that a confused user might put both the
00695  * --version flag *and* subcommand arguments on a help command line.
00696  * The logic for handling such a situation should be in one place.
00697  *
00698  * @since New in 1.5.
00699  */
00700 svn_error_t *
00701 svn_opt_print_help3(apr_getopt_t *os,
00702                     const char *pgm_name,
00703                     svn_boolean_t print_version,
00704                     svn_boolean_t quiet,
00705                     const char *version_footer,
00706                     const char *header,
00707                     const svn_opt_subcommand_desc2_t *cmd_table,
00708                     const apr_getopt_option_t *option_table,
00709                     const int *global_options,
00710                     const char *footer,
00711                     apr_pool_t *pool);
00712 
00713 /**
00714  * Same as svn_opt_print_help3(), but with @a global_options always @c
00715  * NULL.
00716  *
00717  * @deprecated Provided for backward compatibility with the 1.4 API.
00718  */
00719 
00720 SVN_DEPRECATED
00721 svn_error_t *
00722 svn_opt_print_help2(apr_getopt_t *os,
00723                     const char *pgm_name,
00724                     svn_boolean_t print_version,
00725                     svn_boolean_t quiet,
00726                     const char *version_footer,
00727                     const char *header,
00728                     const svn_opt_subcommand_desc2_t *cmd_table,
00729                     const apr_getopt_option_t *option_table,
00730                     const char *footer,
00731                     apr_pool_t *pool);
00732 
00733 
00734 /**
00735  * Same as svn_opt_print_help2(), but acts on #svn_opt_subcommand_desc_t.
00736  *
00737  * @deprecated Provided for backward compatibility with the 1.3 API.
00738  */
00739 SVN_DEPRECATED
00740 svn_error_t *
00741 svn_opt_print_help(apr_getopt_t *os,
00742                    const char *pgm_name,
00743                    svn_boolean_t print_version,
00744                    svn_boolean_t quiet,
00745                    const char *version_footer,
00746                    const char *header,
00747                    const svn_opt_subcommand_desc_t *cmd_table,
00748                    const apr_getopt_option_t *option_table,
00749                    const char *footer,
00750                    apr_pool_t *pool);
00751 
00752 #ifdef __cplusplus
00753 }
00754 #endif /* __cplusplus */
00755 
00756 #endif /* SVN_OPTS_H */
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