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94c0956b60
The sparse-checkout feature is mostly hidden to users, as its only documentation is supplementary information in the docs for 'git read-tree'. In addition, users need to know how to edit the .git/info/sparse-checkout file with the right patterns, then run the appropriate 'git read-tree -mu HEAD' command. Keeping the working directory in sync with the sparse-checkout file requires care. Begin an effort to make the sparse-checkout feature a porcelain feature by creating a new 'git sparse-checkout' builtin. This builtin will be the preferred mechanism for manipulating the sparse-checkout file and syncing the working directory. The documentation provided is adapted from the "git read-tree" documentation with a few edits for clarity in the new context. Extra sections are added to hint toward a future change to a more restricted pattern set. Helped-by: Elijah Newren <newren@gmail.com> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
87 lines
1.9 KiB
C
87 lines
1.9 KiB
C
#include "builtin.h"
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#include "config.h"
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#include "dir.h"
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#include "parse-options.h"
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#include "pathspec.h"
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#include "repository.h"
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#include "run-command.h"
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#include "strbuf.h"
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static char const * const builtin_sparse_checkout_usage[] = {
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N_("git sparse-checkout list"),
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NULL
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};
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static char *get_sparse_checkout_filename(void)
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{
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return git_pathdup("info/sparse-checkout");
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}
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static void write_patterns_to_file(FILE *fp, struct pattern_list *pl)
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{
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int i;
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for (i = 0; i < pl->nr; i++) {
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struct path_pattern *p = pl->patterns[i];
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if (p->flags & PATTERN_FLAG_NEGATIVE)
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fprintf(fp, "!");
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fprintf(fp, "%s", p->pattern);
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if (p->flags & PATTERN_FLAG_MUSTBEDIR)
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fprintf(fp, "/");
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fprintf(fp, "\n");
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}
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}
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static int sparse_checkout_list(int argc, const char **argv)
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{
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struct pattern_list pl;
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char *sparse_filename;
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int res;
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memset(&pl, 0, sizeof(pl));
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sparse_filename = get_sparse_checkout_filename();
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res = add_patterns_from_file_to_list(sparse_filename, "", 0, &pl, NULL);
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free(sparse_filename);
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if (res < 0) {
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warning(_("this worktree is not sparse (sparse-checkout file may not exist)"));
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return 0;
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}
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write_patterns_to_file(stdout, &pl);
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clear_pattern_list(&pl);
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return 0;
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}
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int cmd_sparse_checkout(int argc, const char **argv, const char *prefix)
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{
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static struct option builtin_sparse_checkout_options[] = {
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OPT_END(),
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};
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if (argc == 2 && !strcmp(argv[1], "-h"))
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usage_with_options(builtin_sparse_checkout_usage,
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builtin_sparse_checkout_options);
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argc = parse_options(argc, argv, prefix,
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builtin_sparse_checkout_options,
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builtin_sparse_checkout_usage,
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PARSE_OPT_STOP_AT_NON_OPTION);
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git_config(git_default_config, NULL);
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if (argc > 0) {
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if (!strcmp(argv[0], "list"))
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return sparse_checkout_list(argc, argv);
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}
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usage_with_options(builtin_sparse_checkout_usage,
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builtin_sparse_checkout_options);
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}
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