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9a1805a872
The diff porcelain uses git_diff_ui_config to set porcelain-ish config options, like automatically turning on color. The plumbing specifically avoids calling this function, since it doesn't want things like automatic color or rename detection. However, some diff options should be set for both plumbing and porcelain. For example, one can still turn on color in git-diff-files using the --color command line option. This means we want the color config from color.diff.* (so that once color is on, we use the user's preferred scheme), but _not_ the color.diff variable. We split the diff config into "ui" and "basic", where "basic" is suitable for use by plumbing (so _most_ things affecting the output should still go into the "ui" part). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
137 lines
3.2 KiB
C
137 lines
3.2 KiB
C
#include "cache.h"
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#include "diff.h"
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#include "commit.h"
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#include "log-tree.h"
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#include "builtin.h"
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static struct rev_info log_tree_opt;
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static int diff_tree_commit_sha1(const unsigned char *sha1)
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{
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struct commit *commit = lookup_commit_reference(sha1);
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if (!commit)
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return -1;
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return log_tree_commit(&log_tree_opt, commit);
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}
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static int diff_tree_stdin(char *line)
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{
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int len = strlen(line);
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unsigned char sha1[20];
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struct commit *commit;
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if (!len || line[len-1] != '\n')
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return -1;
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line[len-1] = 0;
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if (get_sha1_hex(line, sha1))
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return -1;
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commit = lookup_commit(sha1);
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if (!commit || parse_commit(commit))
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return -1;
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if (isspace(line[40]) && !get_sha1_hex(line+41, sha1)) {
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/* Graft the fake parents locally to the commit */
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int pos = 41;
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struct commit_list **pptr, *parents;
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/* Free the real parent list */
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for (parents = commit->parents; parents; ) {
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struct commit_list *tmp = parents->next;
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free(parents);
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parents = tmp;
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}
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commit->parents = NULL;
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pptr = &(commit->parents);
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while (line[pos] && !get_sha1_hex(line + pos, sha1)) {
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struct commit *parent = lookup_commit(sha1);
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if (parent) {
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pptr = &commit_list_insert(parent, pptr)->next;
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}
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pos += 41;
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}
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}
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return log_tree_commit(&log_tree_opt, commit);
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}
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static const char diff_tree_usage[] =
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"git-diff-tree [--stdin] [-m] [-c] [--cc] [-s] [-v] [--pretty] [-t] [-r] [--root] "
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"[<common diff options>] <tree-ish> [<tree-ish>] [<path>...]\n"
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" -r diff recursively\n"
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" --root include the initial commit as diff against /dev/null\n"
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COMMON_DIFF_OPTIONS_HELP;
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int cmd_diff_tree(int argc, const char **argv, const char *prefix)
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{
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int nr_sha1;
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char line[1000];
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struct object *tree1, *tree2;
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static struct rev_info *opt = &log_tree_opt;
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int read_stdin = 0;
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init_revisions(opt, prefix);
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git_config(git_diff_basic_config); /* no "diff" UI options */
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nr_sha1 = 0;
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opt->abbrev = 0;
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opt->diff = 1;
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argc = setup_revisions(argc, argv, opt, NULL);
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while (--argc > 0) {
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const char *arg = *++argv;
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if (!strcmp(arg, "--stdin")) {
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read_stdin = 1;
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continue;
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}
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usage(diff_tree_usage);
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}
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if (!opt->diffopt.output_format)
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opt->diffopt.output_format = DIFF_FORMAT_RAW;
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/*
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* NOTE! We expect "a ^b" to be equal to "a..b", so we
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* reverse the order of the objects if the second one
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* is marked UNINTERESTING.
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*/
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nr_sha1 = opt->pending.nr;
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switch (nr_sha1) {
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case 0:
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if (!read_stdin)
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usage(diff_tree_usage);
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break;
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case 1:
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tree1 = opt->pending.objects[0].item;
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diff_tree_commit_sha1(tree1->sha1);
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break;
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case 2:
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tree1 = opt->pending.objects[0].item;
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tree2 = opt->pending.objects[1].item;
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if (tree2->flags & UNINTERESTING) {
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struct object *tmp = tree2;
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tree2 = tree1;
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tree1 = tmp;
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}
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diff_tree_sha1(tree1->sha1,
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tree2->sha1,
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"", &opt->diffopt);
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log_tree_diff_flush(opt);
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break;
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}
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if (read_stdin) {
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if (opt->diffopt.detect_rename)
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opt->diffopt.setup |= (DIFF_SETUP_USE_SIZE_CACHE |
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DIFF_SETUP_USE_CACHE);
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while (fgets(line, sizeof(line), stdin)) {
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unsigned char sha1[20];
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if (get_sha1_hex(line, sha1)) {
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fputs(line, stdout);
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fflush(stdout);
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}
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else
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diff_tree_stdin(line);
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}
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}
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return diff_result_code(&opt->diffopt, 0);
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}
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