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Merge branch 'jc/grep' into next

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* jc/grep:
  builtin-grep: -L (--files-without-match).
  builtin-grep: binary files -a and -I
  builtin-grep: terminate correctly at EOF
This commit is contained in:
Junio C Hamano 2006-05-04 00:15:23 -07:00
commit f8098a3329
1 changed files with 66 additions and 0 deletions
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66
builtin-grep.c
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@ -93,8 +93,13 @@ struct grep_opt {
unsigned linenum:1;
unsigned invert:1;
unsigned name_only:1;
unsigned unmatch_name_only:1;
unsigned count:1;
unsigned word_regexp:1;
#define GREP_BINARY_DEFAULT 0
#define GREP_BINARY_NOMATCH 1
#define GREP_BINARY_TEXT 2
unsigned binary:2;
int regflags;
unsigned pre_context;
unsigned post_context;
@ -148,6 +153,19 @@ static void show_line(struct grep_opt *opt, const char *bol, const char *eol,
printf("%.*s\n", (int)(eol-bol), bol);
}
/*
* NEEDSWORK: share code with diff.c
*/
#define FIRST_FEW_BYTES 8000
static int buffer_is_binary(const char *ptr, unsigned long size)
{
if (FIRST_FEW_BYTES < size)
size = FIRST_FEW_BYTES;
if (memchr(ptr, 0, size))
return 1;
return 0;
}
static int grep_buffer(struct grep_opt *opt, const char *name,
char *buf, unsigned long size)
{
@ -160,9 +178,23 @@ static int grep_buffer(struct grep_opt *opt, const char *name,
} *prev = NULL, *pcl;
unsigned last_hit = 0;
unsigned last_shown = 0;
int binary_match_only = 0;
const char *hunk_mark = "";
unsigned count = 0;
if (buffer_is_binary(buf, size)) {
switch (opt->binary) {
case GREP_BINARY_DEFAULT:
binary_match_only = 1;
break;
case GREP_BINARY_NOMATCH:
return 0; /* Assume unmatch */
break;
default:
break;
}
}
if (opt->pre_context)
prev = xcalloc(opt->pre_context, sizeof(*prev));
if (opt->pre_context || opt->post_context)
@ -210,8 +242,17 @@ static int grep_buffer(struct grep_opt *opt, const char *name,
*/
if (opt->invert)
hit = !hit;
if (opt->unmatch_name_only) {
if (hit)
return 0;
goto next_line;
}
if (hit) {
count++;
if (binary_match_only) {
printf("Binary file %s matches\n", name);
return 1;
}
if (opt->name_only) {
printf("%s\n", name);
return 1;
@ -262,11 +303,22 @@ static int grep_buffer(struct grep_opt *opt, const char *name,
prev->bol = bol;
prev->eol = eol;
}
next_line:
*eol = ch;
bol = eol + 1;
if (!left)
break;
left--;
lno++;
}
if (opt->unmatch_name_only) {
/* We did not see any hit, so we want to show this */
printf("%s\n", name);
return 1;
}
/* NEEDSWORK:
* The real "grep -c foo *.c" gives many "bar.c:0" lines,
* which feels mostly useless but sometimes useful. Maybe
@ -451,11 +503,20 @@ int cmd_grep(int argc, const char **argv, char **envp)
cached = 1;
continue;
}
if (!strcmp("-a", arg) ||
!strcmp("--text", arg)) {
opt.binary = GREP_BINARY_TEXT;
continue;
}
if (!strcmp("-i", arg) ||
!strcmp("--ignore-case", arg)) {
opt.regflags |= REG_ICASE;
continue;
}
if (!strcmp("-I", arg)) {
opt.binary = GREP_BINARY_NOMATCH;
continue;
}
if (!strcmp("-v", arg) ||
!strcmp("--invert-match", arg)) {
opt.invert = 1;
@ -486,6 +547,11 @@ int cmd_grep(int argc, const char **argv, char **envp)
opt.name_only = 1;
continue;
}
if (!strcmp("-L", arg) ||
!strcmp("--files-without-match", arg)) {
opt.unmatch_name_only = 1;
continue;
}
if (!strcmp("-c", arg) ||
!strcmp("--count", arg)) {
opt.count = 1;