From 5aaeb733f5745b37878901c4687ba67c6a70e581 Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Sun, 12 Sep 2010 22:15:35 -0700 Subject: [PATCH] log --author: take union of multiple "author" requests In the olden days, log --author=me --committer=him --grep=this --grep=that used to be turned into: (OR (HEADER-AUTHOR me) (HEADER-COMMITTER him) (PATTERN this) (PATTERN that)) showing my patches that do not have any "this" nor "that", which was totally useless. 80235ba ("log --author=me --grep=it" should find intersection, not union, 2010-01-17) improved it greatly to turn the same into: (ALL-MATCH (HEADER-AUTHOR me) (HEADER-COMMITTER him) (OR (PATTERN this) (PATTERN that))) That is, "show only patches by me and committed by him, that have either this or that", which is a lot more natural thing to ask. We however need to be a bit more clever when the user asks more than one "author" (or "committer"); because a commit has only one author (and one committer), they ought to be interpreted as asking for union to be useful. The current implementation simply added another author/committer pattern at the same top-level for ALL-MATCH to insist on matching all, finding nothing. Turn log --author=me --author=her \ --committer=him --committer=you \ --grep=this --grep=that into (ALL-MATCH (OR (HEADER-AUTHOR me) (HEADER-AUTHOR her)) (OR (HEADER-COMMITTER him) (HEADER-COMMITTER you)) (OR (PATTERN this) (PATTERN that))) instead. Signed-off-by: Junio C Hamano --- grep.c | 65 ++++++++++++++++++++++++++++++++++++++++--------- grep.h | 2 ++ t/t7810-grep.sh | 29 +++++++++++++++++++++- 3 files changed, 83 insertions(+), 13 deletions(-) diff --git a/grep.c b/grep.c index 718a3c234..63c4280ca 100644 --- a/grep.c +++ b/grep.c @@ -189,17 +189,32 @@ static struct grep_expr *compile_pattern_expr(struct grep_pat **list) return compile_pattern_or(list); } +static struct grep_expr *grep_true_expr(void) +{ + struct grep_expr *z = xcalloc(1, sizeof(*z)); + z->node = GREP_NODE_TRUE; + return z; +} + +static struct grep_expr *grep_or_expr(struct grep_expr *left, struct grep_expr *right) +{ + struct grep_expr *z = xcalloc(1, sizeof(*z)); + z->node = GREP_NODE_OR; + z->u.binary.left = left; + z->u.binary.right = right; + return z; +} + static struct grep_expr *prep_header_patterns(struct grep_opt *opt) { struct grep_pat *p; struct grep_expr *header_expr; + struct grep_expr *(header_group[GREP_HEADER_FIELD_MAX]); + enum grep_header_field fld; if (!opt->header_list) return NULL; p = opt->header_list; - header_expr = compile_pattern_expr(&p); - if (p) - die("incomplete pattern expression: %s", p->pattern); for (p = opt->header_list; p; p = p->next) { if (p->token != GREP_PATTERN_HEAD) die("bug: a non-header pattern in grep header list."); @@ -207,6 +222,33 @@ static struct grep_expr *prep_header_patterns(struct grep_opt *opt) die("bug: unknown header field %d", p->field); compile_regexp(p, opt); } + + for (fld = 0; fld < GREP_HEADER_FIELD_MAX; fld++) + header_group[fld] = NULL; + + for (p = opt->header_list; p; p = p->next) { + struct grep_expr *h; + struct grep_pat *pp = p; + + h = compile_pattern_atom(&pp); + if (!h || pp != p->next) + die("bug: malformed header expr"); + if (!header_group[p->field]) { + header_group[p->field] = h; + continue; + } + header_group[p->field] = grep_or_expr(h, header_group[p->field]); + } + + header_expr = NULL; + + for (fld = 0; fld < GREP_HEADER_FIELD_MAX; fld++) { + if (!header_group[fld]) + continue; + if (!header_expr) + header_expr = grep_true_expr(); + header_expr = grep_or_expr(header_group[fld], header_expr); + } return header_expr; } @@ -242,22 +284,18 @@ void compile_grep_patterns(struct grep_opt *opt) if (!header_expr) return; - if (opt->pattern_expression) { - struct grep_expr *z; - z = xcalloc(1, sizeof(*z)); - z->node = GREP_NODE_OR; - z->u.binary.left = opt->pattern_expression; - z->u.binary.right = header_expr; - opt->pattern_expression = z; - } else { + if (!opt->pattern_expression) opt->pattern_expression = header_expr; - } + else + opt->pattern_expression = grep_or_expr(opt->pattern_expression, + header_expr); opt->all_match = 1; } static void free_pattern_expr(struct grep_expr *x) { switch (x->node) { + case GREP_NODE_TRUE: case GREP_NODE_ATOM: break; case GREP_NODE_NOT: @@ -486,6 +524,9 @@ static int match_expr_eval(struct grep_expr *x, char *bol, char *eol, if (!x) die("Not a valid grep expression"); switch (x->node) { + case GREP_NODE_TRUE: + h = 1; + break; case GREP_NODE_ATOM: h = match_one_pattern(x->u.atom, bol, eol, ctx, &match, 0); break; diff --git a/grep.h b/grep.h index efa8cff98..06621fe66 100644 --- a/grep.h +++ b/grep.h @@ -22,6 +22,7 @@ enum grep_header_field { GREP_HEADER_AUTHOR = 0, GREP_HEADER_COMMITTER }; +#define GREP_HEADER_FIELD_MAX (GREP_HEADER_COMMITTER + 1) struct grep_pat { struct grep_pat *next; @@ -41,6 +42,7 @@ enum grep_expr_node { GREP_NODE_ATOM, GREP_NODE_NOT, GREP_NODE_AND, + GREP_NODE_TRUE, GREP_NODE_OR }; diff --git a/t/t7810-grep.sh b/t/t7810-grep.sh index 8a6322765..dc5c08548 100755 --- a/t/t7810-grep.sh +++ b/t/t7810-grep.sh @@ -324,8 +324,13 @@ test_expect_success 'log grep setup' ' echo a >>file && test_tick && - git commit -a -m "third" + git commit -a -m "third" && + echo a >>file && + test_tick && + GIT_AUTHOR_NAME="Night Fall" \ + GIT_AUTHOR_EMAIL="nitfol@frobozz.com" \ + git commit -a -m "fourth" ' test_expect_success 'log grep (1)' ' @@ -372,6 +377,28 @@ test_expect_success 'log --grep --author implicitly uses all-match' ' test_cmp expect actual ' +test_expect_success 'log with multiple --author uses union' ' + git log --author="Thor" --author="Aster" --format=%s >actual && + { + echo third && echo second && echo initial + } >expect && + test_cmp expect actual +' + +test_expect_success 'log with --grep and multiple --author uses all-match' ' + git log --author="Thor" --author="Night" --grep=i --format=%s >actual && + { + echo third && echo initial + } >expect && + test_cmp expect actual +' + +test_expect_success 'log with --grep and multiple --author uses all-match' ' + git log --author="Thor" --author="Night" --grep=q --format=%s >actual && + >expect && + test_cmp expect actual +' + test_expect_success 'grep with CE_VALID file' ' git update-index --assume-unchanged t/t && rm t/t && -- 2.30.2