From bcc0a3ea38a42a64878e11c5244ef2fcc967e05d Mon Sep 17 00:00:00 2001 From: Heiko Voigt Date: Thu, 29 Mar 2012 09:21:21 +0200 Subject: 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 Signed-off-by: Junio C Hamano --- test-revision-walking.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 test-revision-walking.c (limited to 'test-revision-walking.c') diff --git a/test-revision-walking.c b/test-revision-walking.c new file mode 100644 index 0000000000..3ade02c72d --- /dev/null +++ b/test-revision-walking.c @@ -0,0 +1,66 @@ +/* + * test-revision-walking.c: test revision walking API. + * + * (C) 2012 Heiko Voigt + * + * 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; +} -- cgit v1.2.1