1 files changed, 159 insertions, 0 deletions
diff --git a/examples/add.c b/examples/add.c
new file mode 100644
index 000000000..336596bde
--- /dev/null
+++ b/examples/add.c
@@ -0,0 +1,159 @@
+/*
+ * libgit2 "add" example - shows how to modify the index
+ *
+ * Written by the libgit2 contributors
+ *
+ * To the extent possible under law, the author(s) have dedicated all copyright
+ * and related and neighboring rights to this software to the public domain
+ * worldwide. This software is distributed without any warranty.
+ *
+ * You should have received a copy of the CC0 Public Domain Dedication along
+ * with this software. If not, see
+ * <http://creativecommons.org/publicdomain/zero/1.0/>.
+ */
+
+#include "common.h"
+#include <assert.h>
+
+enum print_options {
+	SKIP = 1,
+	VERBOSE = 2,
+	UPDATE = 4,
+};
+
+struct print_payload {
+	enum print_options options;
+	git_repository *repo;
+};
+
+/* Forward declarations for helpers */
+static void parse_opts(int *options, int *count, int argc, char *argv[]);
+void init_array(git_strarray *array, int argc, char **argv);
+int print_matched_cb(const char *path, const char *matched_pathspec, void *payload);
+
+int main (int argc, char** argv)
+{
+	git_index_matched_path_cb matched_cb = NULL;
+	git_repository *repo = NULL;
+	git_index *index;
+	git_strarray array = {0};
+	int options = 0, count = 0;
+	struct print_payload payload = {0};
+
+	git_threads_init();
+
+	parse_opts(&options, &count, argc, argv);
+
+	init_array(&array, argc-count, argv+count);
+
+	check_lg2(git_repository_open(&repo, "."), "No git repository", NULL);
+	check_lg2(git_repository_index(&index, repo), "Could not open repository index", NULL);
+
+	if (options&VERBOSE || options&SKIP) {
+		matched_cb = &print_matched_cb;
+	}
+
+	payload.options = options;
+	payload.repo = repo;
+
+	if (options&UPDATE) {
+		git_index_update_all(index, &array, matched_cb, &payload);
+	} else {
+		git_index_add_all(index, &array, 0, matched_cb, &payload);
+	}
+
+	git_index_write(index);
+	git_index_free(index);
+	git_repository_free(repo);
+
+	git_threads_shutdown();
+
+	return 0;
+}
+
+int print_matched_cb(const char *path, const char *matched_pathspec, void *payload)
+{
+	struct print_payload p = *(struct print_payload*)(payload);
+	int ret;
+	git_status_t status;
+	(void)matched_pathspec;
+
+	if (git_status_file(&status, p.repo, path)) {
+		return -1; //abort
+	}
+
+	if (status & GIT_STATUS_WT_MODIFIED ||
+	         status & GIT_STATUS_WT_NEW) {
+		printf("add '%s'\n", path);
+		ret = 0;
+	} else {
+		ret = 1;
+	}
+
+	if(p.options & SKIP) {
+		ret = 1;
+	}
+
+	return ret;
+}
+
+void init_array(git_strarray *array, int argc, char **argv)
+{
+	unsigned int i;
+
+	array->count = argc;
+	array->strings = malloc(sizeof(char*) * array->count);
+	assert(array->strings!=NULL);
+
+	for(i=0; i<array->count; i++) {
+		array->strings[i]=argv[i];
+	}
+
+	return;
+}
+
+void print_usage(void)
+{
+	fprintf(stderr, "usage: add [options] [--] file-spec [file-spec] [...]\n\n");
+	fprintf(stderr, "\t-n, --dry-run    dry run\n");
+	fprintf(stderr, "\t-v, --verbose    be verbose\n");
+	fprintf(stderr, "\t-u, --update     update tracked files\n");
+	exit(1);
+}
+
+static void parse_opts(int *options, int *count, int argc, char *argv[])
+{
+	int i;
+
+	for (i = 1; i < argc; ++i) {
+		if (argv[i][0] != '-') {
+			break;
+		}
+		else if(!strcmp(argv[i], "--verbose") || !strcmp(argv[i], "-v")) {
+			*options |= VERBOSE;
+		}
+		else if(!strcmp(argv[i], "--dry-run") || !strcmp(argv[i], "-n")) {
+			*options |= SKIP;
+		}
+		else if(!strcmp(argv[i], "--update") || !strcmp(argv[i], "-u")) {
+			*options |= UPDATE;
+		}
+		else if(!strcmp(argv[i], "-h")) {
+			print_usage();
+			break;
+		}
+		else if(!strcmp(argv[i], "--")) {
+			i++;
+			break;
+		}
+		else {
+			fprintf(stderr, "Unsupported option %s.\n", argv[i]);
+			print_usage();
+		}
+	}
+
+	if (argc<=i)
+		print_usage();
+
+	*count = i;
+}