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-rw-r--r--grep.c218
1 files changed, 159 insertions, 59 deletions
diff --git a/grep.c b/grep.c
index 7c1b8e2e8b..2b26cee08d 100644
--- a/grep.c
+++ b/grep.c
@@ -1,6 +1,7 @@
#include "cache.h"
#include "config.h"
#include "grep.h"
+#include "object-store.h"
#include "userdiff.h"
#include "xdiff-interface.h"
#include "diff.h"
@@ -19,6 +20,7 @@ static const char *color_grep_slots[] = {
[GREP_COLOR_FILENAME] = "filename",
[GREP_COLOR_FUNCTION] = "function",
[GREP_COLOR_LINENO] = "lineNumber",
+ [GREP_COLOR_COLUMNNO] = "column",
[GREP_COLOR_MATCH_CONTEXT] = "matchContext",
[GREP_COLOR_MATCH_SELECTED] = "matchSelected",
[GREP_COLOR_SELECTED] = "selected",
@@ -58,10 +60,12 @@ void init_grep_defaults(void)
color_set(opt->colors[GREP_COLOR_FILENAME], "");
color_set(opt->colors[GREP_COLOR_FUNCTION], "");
color_set(opt->colors[GREP_COLOR_LINENO], "");
+ color_set(opt->colors[GREP_COLOR_COLUMNNO], "");
color_set(opt->colors[GREP_COLOR_MATCH_CONTEXT], GIT_COLOR_BOLD_RED);
color_set(opt->colors[GREP_COLOR_MATCH_SELECTED], GIT_COLOR_BOLD_RED);
color_set(opt->colors[GREP_COLOR_SELECTED], "");
color_set(opt->colors[GREP_COLOR_SEP], GIT_COLOR_CYAN);
+ opt->only_matching = 0;
opt->color = -1;
opt->output = std_output;
}
@@ -109,6 +113,10 @@ int grep_config(const char *var, const char *value, void *cb)
opt->linenum = git_config_bool(var, value);
return 0;
}
+ if (!strcmp(var, "grep.column")) {
+ opt->columnnum = git_config_bool(var, value);
+ return 0;
+ }
if (!strcmp(var, "grep.fullname")) {
opt->relative = !git_config_bool(var, value);
@@ -152,10 +160,12 @@ void grep_init(struct grep_opt *opt, const char *prefix)
opt->pattern_tail = &opt->pattern_list;
opt->header_tail = &opt->header_list;
+ opt->only_matching = def->only_matching;
opt->color = def->color;
opt->extended_regexp_option = def->extended_regexp_option;
opt->pattern_type_option = def->pattern_type_option;
opt->linenum = def->linenum;
+ opt->columnnum = def->columnnum;
opt->max_depth = def->max_depth;
opt->pathname = def->pathname;
opt->relative = def->relative;
@@ -1243,11 +1253,11 @@ static int match_one_pattern(struct grep_pat *p, char *bol, char *eol,
return hit;
}
-static int match_expr_eval(struct grep_expr *x, char *bol, char *eol,
- enum grep_context ctx, int collect_hits)
+static int match_expr_eval(struct grep_opt *opt, struct grep_expr *x, char *bol,
+ char *eol, enum grep_context ctx, ssize_t *col,
+ ssize_t *icol, int collect_hits)
{
int h = 0;
- regmatch_t match;
if (!x)
die("Not a valid grep expression");
@@ -1256,25 +1266,52 @@ static int match_expr_eval(struct grep_expr *x, char *bol, char *eol,
h = 1;
break;
case GREP_NODE_ATOM:
- h = match_one_pattern(x->u.atom, bol, eol, ctx, &match, 0);
+ {
+ regmatch_t tmp;
+ h = match_one_pattern(x->u.atom, bol, eol, ctx,
+ &tmp, 0);
+ if (h && (*col < 0 || tmp.rm_so < *col))
+ *col = tmp.rm_so;
+ }
break;
case GREP_NODE_NOT:
- h = !match_expr_eval(x->u.unary, bol, eol, ctx, 0);
+ /*
+ * Upon visiting a GREP_NODE_NOT, col and icol become swapped.
+ */
+ h = !match_expr_eval(opt, x->u.unary, bol, eol, ctx, icol, col,
+ 0);
break;
case GREP_NODE_AND:
- if (!match_expr_eval(x->u.binary.left, bol, eol, ctx, 0))
- return 0;
- h = match_expr_eval(x->u.binary.right, bol, eol, ctx, 0);
+ h = match_expr_eval(opt, x->u.binary.left, bol, eol, ctx, col,
+ icol, 0);
+ if (h || opt->columnnum) {
+ /*
+ * Don't short-circuit AND when given --column, since a
+ * NOT earlier in the tree may turn this into an OR. In
+ * this case, see the below comment.
+ */
+ h &= match_expr_eval(opt, x->u.binary.right, bol, eol,
+ ctx, col, icol, 0);
+ }
break;
case GREP_NODE_OR:
- if (!collect_hits)
- return (match_expr_eval(x->u.binary.left,
- bol, eol, ctx, 0) ||
- match_expr_eval(x->u.binary.right,
- bol, eol, ctx, 0));
- h = match_expr_eval(x->u.binary.left, bol, eol, ctx, 0);
- x->u.binary.left->hit |= h;
- h |= match_expr_eval(x->u.binary.right, bol, eol, ctx, 1);
+ if (!(collect_hits || opt->columnnum)) {
+ /*
+ * Don't short-circuit OR when given --column (or
+ * collecting hits) to ensure we don't skip a later
+ * child that would produce an earlier match.
+ */
+ return (match_expr_eval(opt, x->u.binary.left, bol, eol,
+ ctx, col, icol, 0) ||
+ match_expr_eval(opt, x->u.binary.right, bol,
+ eol, ctx, col, icol, 0));
+ }
+ h = match_expr_eval(opt, x->u.binary.left, bol, eol, ctx, col,
+ icol, 0);
+ if (collect_hits)
+ x->u.binary.left->hit |= h;
+ h |= match_expr_eval(opt, x->u.binary.right, bol, eol, ctx, col,
+ icol, collect_hits);
break;
default:
die("Unexpected node type (internal error) %d", x->node);
@@ -1285,27 +1322,43 @@ static int match_expr_eval(struct grep_expr *x, char *bol, char *eol,
}
static int match_expr(struct grep_opt *opt, char *bol, char *eol,
- enum grep_context ctx, int collect_hits)
+ enum grep_context ctx, ssize_t *col,
+ ssize_t *icol, int collect_hits)
{
struct grep_expr *x = opt->pattern_expression;
- return match_expr_eval(x, bol, eol, ctx, collect_hits);
+ return match_expr_eval(opt, x, bol, eol, ctx, col, icol, collect_hits);
}
static int match_line(struct grep_opt *opt, char *bol, char *eol,
+ ssize_t *col, ssize_t *icol,
enum grep_context ctx, int collect_hits)
{
struct grep_pat *p;
- regmatch_t match;
+ int hit = 0;
if (opt->extended)
- return match_expr(opt, bol, eol, ctx, collect_hits);
+ return match_expr(opt, bol, eol, ctx, col, icol,
+ collect_hits);
/* we do not call with collect_hits without being extended */
for (p = opt->pattern_list; p; p = p->next) {
- if (match_one_pattern(p, bol, eol, ctx, &match, 0))
- return 1;
+ regmatch_t tmp;
+ if (match_one_pattern(p, bol, eol, ctx, &tmp, 0)) {
+ hit |= 1;
+ if (!opt->columnnum) {
+ /*
+ * Without --column, any single match on a line
+ * is enough to know that it needs to be
+ * printed. With --column, scan _all_ patterns
+ * to find the earliest.
+ */
+ break;
+ }
+ if (*col < 0 || tmp.rm_so < *col)
+ *col = tmp.rm_so;
+ }
}
- return 0;
+ return hit;
}
static int match_next_pattern(struct grep_pat *p, char *bol, char *eol,
@@ -1353,11 +1406,44 @@ static int next_match(struct grep_opt *opt, char *bol, char *eol,
return hit;
}
+static void show_line_header(struct grep_opt *opt, const char *name,
+ unsigned lno, ssize_t cno, char sign)
+{
+ if (opt->heading && opt->last_shown == 0) {
+ output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]);
+ opt->output(opt, "\n", 1);
+ }
+ opt->last_shown = lno;
+
+ if (!opt->heading && opt->pathname) {
+ output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]);
+ output_sep(opt, sign);
+ }
+ if (opt->linenum) {
+ char buf[32];
+ xsnprintf(buf, sizeof(buf), "%d", lno);
+ output_color(opt, buf, strlen(buf), opt->colors[GREP_COLOR_LINENO]);
+ output_sep(opt, sign);
+ }
+ /*
+ * Treat 'cno' as the 1-indexed offset from the start of a non-context
+ * line to its first match. Otherwise, 'cno' is 0 indicating that we are
+ * being called with a context line.
+ */
+ if (opt->columnnum && cno) {
+ char buf[32];
+ xsnprintf(buf, sizeof(buf), "%"PRIuMAX, (uintmax_t)cno);
+ output_color(opt, buf, strlen(buf), opt->colors[GREP_COLOR_COLUMNNO]);
+ output_sep(opt, sign);
+ }
+}
+
static void show_line(struct grep_opt *opt, char *bol, char *eol,
- const char *name, unsigned lno, char sign)
+ const char *name, unsigned lno, ssize_t cno, char sign)
{
int rest = eol - bol;
- const char *match_color, *line_color = NULL;
+ const char *match_color = NULL;
+ const char *line_color = NULL;
if (opt->file_break && opt->last_shown == 0) {
if (opt->show_hunk_mark)
@@ -1373,54 +1459,55 @@ static void show_line(struct grep_opt *opt, char *bol, char *eol,
opt->output(opt, "\n", 1);
}
}
- if (opt->heading && opt->last_shown == 0) {
- output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]);
- opt->output(opt, "\n", 1);
- }
- opt->last_shown = lno;
-
- if (!opt->heading && opt->pathname) {
- output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]);
- output_sep(opt, sign);
- }
- if (opt->linenum) {
- char buf[32];
- xsnprintf(buf, sizeof(buf), "%d", lno);
- output_color(opt, buf, strlen(buf), opt->colors[GREP_COLOR_LINENO]);
- output_sep(opt, sign);
+ if (!opt->only_matching) {
+ /*
+ * In case the line we're being called with contains more than
+ * one match, leave printing each header to the loop below.
+ */
+ show_line_header(opt, name, lno, cno, sign);
}
- if (opt->color) {
+ if (opt->color || opt->only_matching) {
regmatch_t match;
enum grep_context ctx = GREP_CONTEXT_BODY;
int ch = *eol;
int eflags = 0;
- if (sign == ':')
- match_color = opt->colors[GREP_COLOR_MATCH_SELECTED];
- else
- match_color = opt->colors[GREP_COLOR_MATCH_CONTEXT];
- if (sign == ':')
- line_color = opt->colors[GREP_COLOR_SELECTED];
- else if (sign == '-')
- line_color = opt->colors[GREP_COLOR_CONTEXT];
- else if (sign == '=')
- line_color = opt->colors[GREP_COLOR_FUNCTION];
+ if (opt->color) {
+ if (sign == ':')
+ match_color = opt->colors[GREP_COLOR_MATCH_SELECTED];
+ else
+ match_color = opt->colors[GREP_COLOR_MATCH_CONTEXT];
+ if (sign == ':')
+ line_color = opt->colors[GREP_COLOR_SELECTED];
+ else if (sign == '-')
+ line_color = opt->colors[GREP_COLOR_CONTEXT];
+ else if (sign == '=')
+ line_color = opt->colors[GREP_COLOR_FUNCTION];
+ }
*eol = '\0';
while (next_match(opt, bol, eol, ctx, &match, eflags)) {
if (match.rm_so == match.rm_eo)
break;
- output_color(opt, bol, match.rm_so, line_color);
+ if (opt->only_matching)
+ show_line_header(opt, name, lno, cno, sign);
+ else
+ output_color(opt, bol, match.rm_so, line_color);
output_color(opt, bol + match.rm_so,
match.rm_eo - match.rm_so, match_color);
+ if (opt->only_matching)
+ opt->output(opt, "\n", 1);
bol += match.rm_eo;
+ cno += match.rm_eo;
rest -= match.rm_eo;
eflags = REG_NOTBOL;
}
*eol = ch;
}
- output_color(opt, bol, rest, line_color);
- opt->output(opt, "\n", 1);
+ if (!opt->only_matching) {
+ output_color(opt, bol, rest, line_color);
+ opt->output(opt, "\n", 1);
+ }
}
#ifndef NO_PTHREADS
@@ -1494,7 +1581,7 @@ static void show_funcname_line(struct grep_opt *opt, struct grep_source *gs,
break;
if (match_funcname(opt, gs, bol, eol)) {
- show_line(opt, bol, eol, gs->name, lno, '=');
+ show_line(opt, bol, eol, gs->name, lno, 0, '=');
break;
}
}
@@ -1559,7 +1646,7 @@ static void show_pre_context(struct grep_opt *opt, struct grep_source *gs,
while (*eol != '\n')
eol++;
- show_line(opt, bol, eol, gs->name, cur, sign);
+ show_line(opt, bol, eol, gs->name, cur, 0, sign);
bol = eol + 1;
cur++;
}
@@ -1758,6 +1845,8 @@ static int grep_source_1(struct grep_opt *opt, struct grep_source *gs, int colle
while (left) {
char *eol, ch;
int hit;
+ ssize_t cno;
+ ssize_t col = -1, icol = -1;
/*
* look_ahead() skips quickly to the line that possibly
@@ -1781,7 +1870,7 @@ static int grep_source_1(struct grep_opt *opt, struct grep_source *gs, int colle
if ((ctx == GREP_CONTEXT_HEAD) && (eol == bol))
ctx = GREP_CONTEXT_BODY;
- hit = match_line(opt, bol, eol, ctx, collect_hits);
+ hit = match_line(opt, bol, eol, &col, &icol, ctx, collect_hits);
*eol = ch;
if (collect_hits)
@@ -1822,7 +1911,18 @@ static int grep_source_1(struct grep_opt *opt, struct grep_source *gs, int colle
show_pre_context(opt, gs, bol, eol, lno);
else if (opt->funcname)
show_funcname_line(opt, gs, bol, lno);
- show_line(opt, bol, eol, gs->name, lno, ':');
+ cno = opt->invert ? icol : col;
+ if (cno < 0) {
+ /*
+ * A negative cno indicates that there was no
+ * match on the line. We are thus inverted and
+ * being asked to show all lines that _don't_
+ * match a given expression. Therefore, set cno
+ * to 0 to suggest the whole line matches.
+ */
+ cno = 0;
+ }
+ show_line(opt, bol, eol, gs->name, lno, cno + 1, ':');
last_hit = lno;
if (opt->funcbody)
show_function = 1;
@@ -1851,7 +1951,7 @@ static int grep_source_1(struct grep_opt *opt, struct grep_source *gs, int colle
/* If the last hit is within the post context,
* we need to show this line.
*/
- show_line(opt, bol, eol, gs->name, lno, '-');
+ show_line(opt, bol, eol, gs->name, lno, col + 1, '-');
}
next_line:
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-18 18:51:40 +0000