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authorHeiko Voigt <hvoigt@hvoigt.net>2012-03-29 07:21:21 (GMT)
committerJunio C Hamano <gitster@pobox.com>2012-03-30 15:57:49 (GMT)
commitbcc0a3ea38a42a64878e11c5244ef2fcc967e05d (patch)
tree5ca0d025050a6b81fce75af772de37715a7c7ed2 /test-revision-walking.c
parent6f5e880c68099b185e60b2492c75e506e16d8292 (diff)
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Teach revision walking machinery to walk multiple times sequencially
Previously it was not possible to iterate revisions twice using the revision walking api. We add a reset_revision_walk() which clears the used flags. This allows us to do multiple sequencial revision walks. We add the appropriate calls to the existing submodule machinery doing revision walks. This is done to avoid surprises if future code wants to call these functions more than once during the processes lifetime. Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'test-revision-walking.c')
-rw-r--r--test-revision-walking.c66
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diff --git a/test-revision-walking.c b/test-revision-walking.c
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+/*
+ * test-revision-walking.c: test revision walking API.
+ *
+ * (C) 2012 Heiko Voigt <hvoigt@hvoigt.net>
+ *
+ * This code is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "cache.h"
+#include "commit.h"
+#include "diff.h"
+#include "revision.h"
+
+static void print_commit(struct commit *commit)
+{
+ struct strbuf sb = STRBUF_INIT;
+ struct pretty_print_context ctx = {0};
+ ctx.date_mode = DATE_NORMAL;
+ format_commit_message(commit, " %m %s", &sb, &ctx);
+ printf("%s\n", sb.buf);
+ strbuf_release(&sb);
+}
+
+static int run_revision_walk(void)
+{
+ struct rev_info rev;
+ struct commit *commit;
+ const char *argv[] = {NULL, "--all", NULL};
+ int argc = ARRAY_SIZE(argv) - 1;
+ int got_revision = 0;
+
+ init_revisions(&rev, NULL);
+ setup_revisions(argc, argv, &rev, NULL);
+ if (prepare_revision_walk(&rev))
+ die("revision walk setup failed");
+
+ while ((commit = get_revision(&rev)) != NULL) {
+ print_commit(commit);
+ got_revision = 1;
+ }
+
+ reset_revision_walk();
+ return got_revision;
+}
+
+int main(int argc, char **argv)
+{
+ if (argc < 2)
+ return 1;
+
+ if (!strcmp(argv[1], "run-twice")) {
+ printf("1st\n");
+ if (!run_revision_walk())
+ return 1;
+ printf("2nd\n");
+ if (!run_revision_walk())
+ return 1;
+
+ return 0;
+ }
+
+ fprintf(stderr, "check usage\n");
+ return 1;
+}