From 4da5af3151301d25a25d60a90b8275eaca13de86 Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Wed, 11 May 2011 14:01:19 -0700 Subject: [PATCH] setup_revisions(): take pathspec from command line and --stdin correctly When the command line has "--" disambiguator, we take the remainder of argv[] as "prune_data", but when --stdin is given at the same time, we need to append to the existing prune_data and end up attempting to realloc(3) it. That would not work. Fix it by consistently using append_prune_data() throughout the input processing. Also avoid counting the number of existing paths in the function over and over again. Signed-off-by: Junio C Hamano --- revision.c | 80 ++++++++++++++------------------------- t/t6017-rev-list-stdin.sh | 17 +++++++++ 2 files changed, 45 insertions(+), 52 deletions(-) diff --git a/revision.c b/revision.c index a8a3c3a4bd..047e017005 100644 --- a/revision.c +++ b/revision.c @@ -953,35 +953,34 @@ int handle_revision_arg(const char *arg, struct rev_info *revs, return 0; } -static void read_pathspec_from_stdin(struct rev_info *revs, struct strbuf *sb, const char ***prune_data) +struct cmdline_pathspec { + int alloc; + int nr; + const char **path; +}; + +static void append_prune_data(struct cmdline_pathspec *prune, const char **av) { - const char **prune = *prune_data; - int prune_nr; - int prune_alloc; - - /* count existing ones */ - if (!prune) - prune_nr = 0; - else - for (prune_nr = 0; prune[prune_nr]; prune_nr++) - ; - prune_alloc = prune_nr; /* not really, but we do not know */ + while (*av) { + ALLOC_GROW(prune->path, prune->nr+1, prune->alloc); + prune->path[prune->nr++] = *(av++); + } +} +static void read_pathspec_from_stdin(struct rev_info *revs, struct strbuf *sb, + struct cmdline_pathspec *prune) +{ while (strbuf_getwholeline(sb, stdin, '\n') != EOF) { int len = sb->len; if (len && sb->buf[len - 1] == '\n') sb->buf[--len] = '\0'; - ALLOC_GROW(prune, prune_nr+1, prune_alloc); - prune[prune_nr++] = xstrdup(sb->buf); + ALLOC_GROW(prune->path, prune->nr+1, prune->alloc); + prune->path[prune->nr++] = xstrdup(sb->buf); } - if (prune) { - ALLOC_GROW(prune, prune_nr+1, prune_alloc); - prune[prune_nr] = NULL; - } - *prune_data = prune; } -static void read_revisions_from_stdin(struct rev_info *revs, const char ***prune) +static void read_revisions_from_stdin(struct rev_info *revs, + struct cmdline_pathspec *prune) { struct strbuf sb; int seen_dashdash = 0; @@ -1267,34 +1266,6 @@ static int for_each_good_bisect_ref(each_ref_fn fn, void *cb_data) return for_each_ref_in("refs/bisect/good", fn, cb_data); } -static void append_prune_data(const char ***prune_data, const char **av) -{ - const char **prune = *prune_data; - int prune_nr; - int prune_alloc; - - if (!prune) { - *prune_data = av; - return; - } - - /* count existing ones */ - for (prune_nr = 0; prune[prune_nr]; prune_nr++) - ; - prune_alloc = prune_nr; /* not really, but we do not know */ - - while (*av) { - ALLOC_GROW(prune, prune_nr+1, prune_alloc); - prune[prune_nr++] = *av; - av++; - } - if (prune) { - ALLOC_GROW(prune, prune_nr+1, prune_alloc); - prune[prune_nr] = NULL; - } - *prune_data = prune; -} - /* * Parse revision information, filling in the "rev_info" structure, * and removing the used arguments from the argument list. @@ -1305,7 +1276,9 @@ static void append_prune_data(const char ***prune_data, const char **av) int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def) { int i, flags, left, seen_dashdash, read_from_stdin; - const char **prune_data = NULL; + struct cmdline_pathspec prune_data; + + memset(&prune_data, 0, sizeof(prune_data)); /* First, search for "--" */ seen_dashdash = 0; @@ -1316,7 +1289,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch argv[i] = NULL; argc = i; if (argv[i + 1]) - prune_data = argv + i + 1; + append_prune_data(&prune_data, argv + i + 1); seen_dashdash = 1; break; } @@ -1408,8 +1381,11 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch } } - if (prune_data) - revs->prune_data = get_pathspec(revs->prefix, prune_data); + if (prune_data.nr) { + ALLOC_GROW(prune_data.path, prune_data.nr+1, prune_data.alloc); + prune_data.path[prune_data.nr++] = NULL; + revs->prune_data = get_pathspec(revs->prefix, prune_data.path); + } if (revs->def == NULL) revs->def = def; diff --git a/t/t6017-rev-list-stdin.sh b/t/t6017-rev-list-stdin.sh index f1c32dba42..667b37564e 100755 --- a/t/t6017-rev-list-stdin.sh +++ b/t/t6017-rev-list-stdin.sh @@ -58,4 +58,21 @@ check side-3 ^side-4 -- file-3 check side-3 ^side-2 check side-3 ^side-2 -- file-1 +test_expect_success 'not only --stdin' ' + cat >expect <<-EOF && + 7 + + file-1 + file-2 + EOF + cat >input <<-EOF && + ^master^ + -- + file-2 + EOF + git log --pretty=tformat:%s --name-only --stdin master -- file-1 \ + actual && + test_cmp expect actual +' + test_done