f4609b896f
This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because there is some breakage in the git build related to the netrc credentials helper which someone has taken care of in nixpkgs. The stable channel is not used for anything other than git, so this should be fine. Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb
82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
/*
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* GIT - The information manager from hell
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*
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* Copyright (C) Linus Torvalds, 2005
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*/
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#define USE_THE_INDEX_COMPATIBILITY_MACROS
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#include "cache.h"
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#include "config.h"
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#include "diff.h"
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#include "commit.h"
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#include "revision.h"
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#include "builtin.h"
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#include "submodule.h"
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static const char diff_files_usage[] =
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"git diff-files [-q] [-0 | -1 | -2 | -3 | -c | --cc] [<common-diff-options>] [<path>...]"
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COMMON_DIFF_OPTIONS_HELP;
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int cmd_diff_files(int argc, const char **argv, const char *prefix)
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{
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struct rev_info rev;
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int result;
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unsigned options = 0;
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if (argc == 2 && !strcmp(argv[1], "-h"))
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usage(diff_files_usage);
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git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
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repo_init_revisions(the_repository, &rev, prefix);
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rev.abbrev = 0;
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/*
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* Consider "intent-to-add" files as new by default, unless
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* explicitly specified in the command line or anywhere else.
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*/
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rev.diffopt.ita_invisible_in_index = 1;
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precompose_argv(argc, argv);
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argc = setup_revisions(argc, argv, &rev, NULL);
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while (1 < argc && argv[1][0] == '-') {
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if (!strcmp(argv[1], "--base"))
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rev.max_count = 1;
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else if (!strcmp(argv[1], "--ours"))
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rev.max_count = 2;
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else if (!strcmp(argv[1], "--theirs"))
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rev.max_count = 3;
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else if (!strcmp(argv[1], "-q"))
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options |= DIFF_SILENT_ON_REMOVED;
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else
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usage(diff_files_usage);
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argv++; argc--;
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}
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if (!rev.diffopt.output_format)
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rev.diffopt.output_format = DIFF_FORMAT_RAW;
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/*
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* Make sure there are NO revision (i.e. pending object) parameter,
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* rev.max_count is reasonable (0 <= n <= 3), and
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* there is no other revision filtering parameters.
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*/
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if (rev.pending.nr ||
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rev.min_age != -1 || rev.max_age != -1 ||
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3 < rev.max_count)
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usage(diff_files_usage);
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/*
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* "diff-files --base -p" should not combine merges because it
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* was not asked to. "diff-files -c -p" should not densify
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* (the user should ask with "diff-files --cc" explicitly).
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*/
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if (rev.max_count == -1 && !rev.combine_merges &&
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(rev.diffopt.output_format & DIFF_FORMAT_PATCH))
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rev.combine_merges = rev.dense_combined_merges = 1;
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if (read_cache_preload(&rev.diffopt.pathspec) < 0) {
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perror("read_cache_preload");
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return -1;
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}
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result = run_diff_files(&rev, options);
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return diff_result_code(&rev.diffopt, result);
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}
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