| /* diff.c -- test driver for text diffs |
| * |
| * ==================================================================== |
| * 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. |
| * ==================================================================== |
| */ |
| |
| |
| #include <apr.h> |
| #include <apr_general.h> |
| #include <apr_file_io.h> |
| |
| #include "svn_pools.h" |
| #include "svn_diff.h" |
| #include "svn_io.h" |
| #include "svn_utf.h" |
| |
| static svn_error_t * |
| do_diff(svn_stream_t *ostream, |
| const char *original, |
| const char *modified, |
| svn_boolean_t *has_changes, |
| svn_diff_file_options_t *options, |
| svn_boolean_t show_c_function, |
| apr_pool_t *pool) |
| { |
| svn_diff_t *diff; |
| |
| SVN_ERR(svn_diff_file_diff_2(&diff, original, modified, options, pool)); |
| *has_changes = svn_diff_contains_diffs(diff); |
| return svn_diff_file_output_unified4(ostream, diff, original, modified, |
| NULL, NULL, SVN_APR_LOCALE_CHARSET, |
| NULL, show_c_function, |
| options->context_size, |
| NULL, NULL, pool); |
| } |
| |
| static void |
| print_usage(svn_stream_t *ostream, const char *progname, |
| apr_pool_t *pool) |
| { |
| svn_error_clear(svn_stream_printf(ostream, pool, |
| "Usage: %s [OPTIONS] <file1> <file2>\n" |
| "\n" |
| "Display the differences between <file1> and <file2> in unified diff\n" |
| "format. OPTIONS are diff extensions as described by 'svn help diff'.\n" |
| "Use '--' alone to indicate that no more options follow.\n", |
| progname)); |
| } |
| |
| int main(int argc, const char *argv[]) |
| { |
| apr_pool_t *pool; |
| svn_stream_t *ostream; |
| svn_error_t *svn_err; |
| svn_boolean_t has_changes; |
| svn_diff_file_options_t *diff_options; |
| apr_array_header_t *options_array; |
| int i; |
| const char *from = NULL; |
| const char *to = NULL; |
| svn_boolean_t show_c_function = FALSE; |
| svn_boolean_t no_more_options = FALSE; |
| |
| apr_initialize(); |
| atexit(apr_terminate); |
| |
| pool = svn_pool_create(NULL); |
| |
| svn_err = svn_stream_for_stdout(&ostream, pool); |
| if (svn_err) |
| { |
| svn_handle_error2(svn_err, stdout, FALSE, "diff: "); |
| return 2; |
| } |
| |
| options_array = apr_array_make(pool, 0, sizeof(const char *)); |
| |
| diff_options = svn_diff_file_options_create(pool); |
| |
| for (i = 1 ; i < argc ; i++) |
| { |
| if (!no_more_options && (argv[i][0] == '-')) |
| { |
| /* Special case: '--' means "no more options follow" */ |
| if (argv[i][1] == '-' && !argv[i][2]) |
| { |
| no_more_options = TRUE; |
| continue; |
| } |
| /* Special case: we need to detect '-p' and handle it specially */ |
| if (argv[i][1] == 'p' && !argv[i][2]) |
| { |
| show_c_function = TRUE; |
| continue; |
| } |
| if (argv[i][1] == 'w' && !argv[i][2]) |
| { |
| diff_options->ignore_space = svn_diff_file_ignore_space_all; |
| continue; |
| } |
| |
| APR_ARRAY_PUSH(options_array, const char *) = argv[i]; |
| |
| /* Special case: '-U' takes an argument, so capture the |
| * next argument in the array. */ |
| if (argv[i][1] == 'U' && !argv[i][2]) |
| { |
| i++; |
| APR_ARRAY_PUSH(options_array, const char *) = argv[i]; |
| } |
| } |
| else |
| { |
| if (from == NULL) |
| from = argv[i]; |
| else if (to == NULL) |
| to = argv[i]; |
| else |
| { |
| print_usage(ostream, argv[0], pool); |
| return 2; |
| } |
| } |
| } |
| |
| if (!from || !to) |
| { |
| print_usage(ostream, argv[0], pool); |
| return 2; |
| } |
| |
| svn_err = svn_diff_file_options_parse(diff_options, options_array, pool); |
| if (svn_err) |
| { |
| svn_handle_error2(svn_err, stdout, FALSE, "diff: "); |
| return 2; |
| } |
| |
| svn_err = do_diff(ostream, from, to, &has_changes, |
| diff_options, show_c_function, pool); |
| if (svn_err) |
| { |
| svn_handle_error2(svn_err, stdout, FALSE, "diff: "); |
| return 2; |
| } |
| |
| return has_changes ? 1 : 0; |
| } |