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Initial implementation of status example
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‎examples/Makefile

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@@ -3,7 +3,7 @@
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CC = gcc
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CFLAGS = -g -I../include -I../src -Wall -Wextra -Wmissing-prototypes -Wno-missing-field-initializers
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LFLAGS = -L../build -lgit2 -lz
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APPS = general showindex diff rev-list cat-file
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APPS = general showindex diff rev-list cat-file status
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all: $(APPS)
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‎examples/status.c

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/*
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* Copyright (C) 2011-2012 the libgit2 contributors
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*
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* This file is part of libgit2, distributed under the GNU GPL v2 with
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* a Linking Exception. For full terms see the included COPYING file.
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*/
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#include <git2.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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enum {
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FORMAT_DEFAULT = 0,
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FORMAT_LONG = 1,
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FORMAT_SHORT = 2,
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FORMAT_PORCELAIN = 3,
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};
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#define MAX_PATHSPEC 8
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/*
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* This example demonstrates the use of `git_status_foreach()` to roughly
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* simulate the output of running `git status`. It should serve as a simple
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* example of how to get basic status information.
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*
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* This does not have:
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* - Robust error handling
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* - Any real command line parsing
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* - Colorized or paginated output formatting
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*
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*/
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static void check(int error, const char *message, const char *extra)
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{
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const git_error *lg2err;
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const char *lg2msg = "", *lg2spacer = "";
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if (!error)
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return;
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if ((lg2err = giterr_last()) != NULL && lg2err->message != NULL) {
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lg2msg = lg2err->message;
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lg2spacer = " - ";
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}
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if (extra)
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fprintf(stderr, "%s '%s' [%d]%s%s\n",
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message, extra, error, lg2spacer, lg2msg);
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else
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fprintf(stderr, "%s [%d]%s%s\n",
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message, error, lg2spacer, lg2msg);
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exit(1);
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}
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static void fail(const char *message)
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{
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check(-1, message, NULL);
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}
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static void show_branch(git_repository *repo, int format)
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{
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int error = 0;
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const char *branch = NULL;
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git_reference *head = NULL;
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error = git_repository_head(&head, repo);
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if (error == GIT_EORPHANEDHEAD || error == GIT_ENOTFOUND)
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branch = NULL;
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else if (!error) {
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branch = git_reference_name(head);
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if (!strncmp(branch, "refs/heads/", strlen("refs/heads/")))
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branch += strlen("refs/heads/");
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} else
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check(error, "failed to get current branch", NULL);
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if (format == FORMAT_LONG)
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printf("# %s\n", branch ? branch : "Not currently on any branch.");
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else
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printf("## %s\n", branch ? branch : "HEAD (no branch)");
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git_reference_free(head);
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}
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static void print_long(git_repository *repo, git_status_list *status)
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{
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(void)repo;
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(void)status;
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}
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static void print_short(git_repository *repo, git_status_list *status)
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{
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size_t i, maxi = git_status_list_entrycount(status);
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const git_status_entry *s;
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char istatus, wstatus;
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const char *extra, *a, *b, *c;
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for (i = 0; i < maxi; ++i) {
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s = git_status_byindex(status, i);
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if (s->status == GIT_STATUS_CURRENT)
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continue;
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a = b = c = NULL;
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istatus = wstatus = ' ';
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extra = "";
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if (s->status & GIT_STATUS_INDEX_NEW)
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istatus = 'A';
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if (s->status & GIT_STATUS_INDEX_MODIFIED)
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istatus = 'M';
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if (s->status & GIT_STATUS_INDEX_DELETED)
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istatus = 'D';
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if (s->status & GIT_STATUS_INDEX_RENAMED)
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istatus = 'R';
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if (s->status & GIT_STATUS_INDEX_TYPECHANGE)
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istatus = 'T';
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if (s->status & GIT_STATUS_WT_NEW) {
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if (istatus == ' ')
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istatus = '?';
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wstatus = '?';
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}
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if (s->status & GIT_STATUS_WT_MODIFIED)
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wstatus = 'M';
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if (s->status & GIT_STATUS_WT_DELETED)
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wstatus = 'D';
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if (s->status & GIT_STATUS_WT_RENAMED)
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wstatus = 'R';
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if (s->status & GIT_STATUS_WT_TYPECHANGE)
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wstatus = 'T';
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if (s->status & GIT_STATUS_IGNORED) {
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istatus = '!';
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wstatus = '!';
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}
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if (istatus == '?' && wstatus == '?')
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continue;
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if (s->index_to_workdir &&
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s->index_to_workdir->new_file.mode == GIT_FILEMODE_COMMIT)
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{
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git_submodule *sm = NULL;
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unsigned int smstatus = 0;
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if (!git_submodule_lookup(
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&sm, repo, s->index_to_workdir->new_file.path) &&
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!git_submodule_status(&smstatus, sm))
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{
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if (smstatus & GIT_SUBMODULE_STATUS_WD_MODIFIED)
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extra = " (new commits)";
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else if (smstatus & GIT_SUBMODULE_STATUS_WD_INDEX_MODIFIED)
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extra = " (modified content)";
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else if (smstatus & GIT_SUBMODULE_STATUS_WD_WD_MODIFIED)
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extra = " (modified content)";
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else if (smstatus & GIT_SUBMODULE_STATUS_WD_UNTRACKED)
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extra = " (untracked content)";
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}
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}
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if (s->head_to_index) {
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a = s->head_to_index->old_file.path;
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b = s->head_to_index->new_file.path;
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}
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if (s->index_to_workdir) {
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if (!a)
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a = s->index_to_workdir->old_file.path;
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if (!b)
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b = s->index_to_workdir->old_file.path;
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c = s->index_to_workdir->new_file.path;
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}
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if (istatus == 'R') {
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if (wstatus == 'R')
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printf("%c%c %s %s %s%s\n", istatus, wstatus, a, b, c, extra);
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else
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printf("%c%c %s %s%s\n", istatus, wstatus, a, b, extra);
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} else {
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if (wstatus == 'R')
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printf("%c%c %s %s%s\n", istatus, wstatus, a, c, extra);
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else
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printf("%c%c %s%s\n", istatus, wstatus, a, extra);
185+
}
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}
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188+
for (i = 0; i < maxi; ++i) {
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s = git_status_byindex(status, i);
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if (s->status == GIT_STATUS_WT_NEW)
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printf("?? %s\n", s->index_to_workdir->old_file.path);
193+
}
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}
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int main(int argc, char *argv[])
197+
{
198+
git_repository *repo = NULL;
199+
int i, npaths = 0, format = FORMAT_DEFAULT, zterm = 0, showbranch = 0;
200+
git_status_options opt = GIT_STATUS_OPTIONS_INIT;
201+
git_status_list *status;
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char *repodir = ".", *pathspec[MAX_PATHSPEC];
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opt.show = GIT_STATUS_SHOW_INDEX_AND_WORKDIR;
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opt.flags = GIT_STATUS_OPT_INCLUDE_UNTRACKED |
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GIT_STATUS_OPT_RENAMES_HEAD_TO_INDEX;
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for (i = 1; i < argc; ++i) {
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if (argv[i][0] != '-') {
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if (npaths < MAX_PATHSPEC)
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pathspec[npaths++] = argv[i];
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else
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fail("Example only supports a limited pathspec");
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}
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else if (!strcmp(argv[i], "-s") || !strcmp(argv[i], "--short"))
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format = FORMAT_SHORT;
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else if (!strcmp(argv[i], "--long"))
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format = FORMAT_LONG;
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else if (!strcmp(argv[i], "--porcelain"))
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format = FORMAT_PORCELAIN;
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else if (!strcmp(argv[i], "-b") || !strcmp(argv[i], "--branch"))
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showbranch = 1;
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else if (!strcmp(argv[i], "-z")) {
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zterm = 1;
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if (format == FORMAT_DEFAULT)
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format = FORMAT_PORCELAIN;
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}
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else if (!strcmp(argv[i], "--ignored"))
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opt.flags |= GIT_STATUS_OPT_INCLUDE_IGNORED;
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else if (!strcmp(argv[i], "-uno") ||
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!strcmp(argv[i], "--untracked-files=no"))
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opt.flags &= ~GIT_STATUS_OPT_INCLUDE_UNTRACKED;
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else if (!strcmp(argv[i], "-unormal") ||
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!strcmp(argv[i], "--untracked-files=normal"))
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opt.flags |= GIT_STATUS_OPT_INCLUDE_UNTRACKED;
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else if (!strcmp(argv[i], "-uall") ||
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!strcmp(argv[i], "--untracked-files=all"))
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opt.flags |= GIT_STATUS_OPT_INCLUDE_UNTRACKED |
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GIT_STATUS_OPT_RECURSE_UNTRACKED_DIRS;
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else if (!strcmp(argv[i], "--ignore-submodules=all"))
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opt.flags |= GIT_STATUS_OPT_EXCLUDE_SUBMODULES;
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else if (!strncmp(argv[i], "--git-dir=", strlen("--git-dir=")))
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repodir = argv[i] + strlen("--git-dir=");
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else
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check(-1, "Unsupported option", argv[i]);
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}
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if (format == FORMAT_DEFAULT)
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format = FORMAT_LONG;
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if (format == FORMAT_LONG)
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showbranch = 1;
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if (npaths > 0) {
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opt.pathspec.strings = pathspec;
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opt.pathspec.count = npaths;
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}
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/*
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* Try to open the repository at the given path (or at the current
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* directory if none was given).
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*/
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check(git_repository_open_ext(&repo, repodir, 0, NULL),
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"Could not open repository", repodir);
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if (git_repository_is_bare(repo))
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fail("Cannot report status on bare repository");
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/*
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* Run status on the repository
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*
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* Because we want to simluate a full "git status" run and want to
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* support some command line options, we use `git_status_foreach_ext()`
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* instead of just the plain status call. This allows (a) iterating
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* over the index and then the workdir and (b) extra flags that control
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* which files are included. If you just want simple status (e.g. to
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* enumerate files that are modified) then you probably don't need the
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* extended API.
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*/
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check(git_status_list_new(&status, repo, &opt),
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"Could not get status", NULL);
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if (showbranch)
282+
show_branch(repo, format);
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if (format == FORMAT_LONG)
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print_long(repo, status);
286+
else
287+
print_short(repo, status);
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git_status_list_free(status);
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git_repository_free(repo);
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return 0;
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}
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