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https://github.com/git/git.git
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a8baa7b9f5
The way tree-diff was set up assumed we would use only one set of pathspec during the entire life of the program. Move the pathspec related static variables out to diff_options structure so that we can filter commits with one set of paths while show the actual diffs using different set of paths. I suspect this breaks blame.c, and makes "git log paths..." to default to the --full-diff, the latter of which is dealt with the next commit. Signed-off-by: Junio C Hamano <junkio@cox.net>
150 lines
3.2 KiB
C
150 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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static struct log_tree_opt 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 main(int argc, const char **argv)
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{
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int nr_sha1;
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char line[1000];
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unsigned char sha1[2][20];
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const char *prefix = setup_git_directory();
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static struct log_tree_opt *opt = &log_tree_opt;
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int read_stdin = 0;
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git_config(git_diff_config);
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nr_sha1 = 0;
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init_log_tree_opt(opt);
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for (;;) {
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int opt_cnt;
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const char *arg;
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argv++;
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argc--;
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arg = *argv;
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if (!arg)
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break;
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if (*arg != '-') {
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if (nr_sha1 < 2 && !get_sha1(arg, sha1[nr_sha1])) {
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nr_sha1++;
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continue;
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}
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break;
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}
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opt_cnt = log_tree_opt_parse(opt, argv, argc);
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if (opt_cnt < 0)
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usage(diff_tree_usage);
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else if (opt_cnt) {
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argv += opt_cnt - 1;
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argc -= opt_cnt - 1;
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continue;
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}
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if (!strcmp(arg, "--")) {
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argv++;
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argc--;
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break;
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}
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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->combine_merges)
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opt->ignore_merges = 0;
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/* We can only do dense combined merges with diff output */
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if (opt->dense_combined_merges)
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opt->diffopt.output_format = DIFF_FORMAT_PATCH;
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if (opt->diffopt.output_format == DIFF_FORMAT_PATCH)
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opt->diffopt.recursive = 1;
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diff_tree_setup_paths(get_pathspec(prefix, argv), opt);
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diff_setup_done(&opt->diffopt);
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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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diff_tree_commit_sha1(sha1[0]);
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break;
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case 2:
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diff_tree_sha1(sha1[0], sha1[1], "", &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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return 0;
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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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diff_tree_stdin(line);
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return 0;
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}
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