mirror of
https://github.com/git/git.git
synced 2024-11-26 03:14:50 +08:00
497215d881
Tell the user what this command is intended for, and expand the description of what it does. Signed-off-by: Conrad Irwin <conrad.irwin@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
89 lines
1.9 KiB
C
89 lines
1.9 KiB
C
#include "builtin.h"
|
|
#include "cache.h"
|
|
|
|
/*
|
|
* Returns the length of a line, without trailing spaces.
|
|
*
|
|
* If the line ends with newline, it will be removed too.
|
|
*/
|
|
static size_t cleanup(char *line, size_t len)
|
|
{
|
|
while (len) {
|
|
unsigned char c = line[len - 1];
|
|
if (!isspace(c))
|
|
break;
|
|
len--;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
/*
|
|
* Remove empty lines from the beginning and end
|
|
* and also trailing spaces from every line.
|
|
*
|
|
* Turn multiple consecutive empty lines between paragraphs
|
|
* into just one empty line.
|
|
*
|
|
* If the input has only empty lines and spaces,
|
|
* no output will be produced.
|
|
*
|
|
* If last line does not have a newline at the end, one is added.
|
|
*
|
|
* Enable skip_comments to skip every line starting with "#".
|
|
*/
|
|
void stripspace(struct strbuf *sb, int skip_comments)
|
|
{
|
|
int empties = 0;
|
|
size_t i, j, len, newlen;
|
|
char *eol;
|
|
|
|
/* We may have to add a newline. */
|
|
strbuf_grow(sb, 1);
|
|
|
|
for (i = j = 0; i < sb->len; i += len, j += newlen) {
|
|
eol = memchr(sb->buf + i, '\n', sb->len - i);
|
|
len = eol ? eol - (sb->buf + i) + 1 : sb->len - i;
|
|
|
|
if (skip_comments && len && sb->buf[i] == '#') {
|
|
newlen = 0;
|
|
continue;
|
|
}
|
|
newlen = cleanup(sb->buf + i, len);
|
|
|
|
/* Not just an empty line? */
|
|
if (newlen) {
|
|
if (empties > 0 && j > 0)
|
|
sb->buf[j++] = '\n';
|
|
empties = 0;
|
|
memmove(sb->buf + j, sb->buf + i, newlen);
|
|
sb->buf[newlen + j++] = '\n';
|
|
} else {
|
|
empties++;
|
|
}
|
|
}
|
|
|
|
strbuf_setlen(sb, j);
|
|
}
|
|
|
|
int cmd_stripspace(int argc, const char **argv, const char *prefix)
|
|
{
|
|
struct strbuf buf = STRBUF_INIT;
|
|
int strip_comments = 0;
|
|
|
|
if (argc == 2 && (!strcmp(argv[1], "-s") ||
|
|
!strcmp(argv[1], "--strip-comments")))
|
|
strip_comments = 1;
|
|
else if (argc > 1)
|
|
usage("git stripspace [-s | --strip-comments] < input");
|
|
|
|
if (strbuf_read(&buf, 0, 1024) < 0)
|
|
die_errno("could not read the input");
|
|
|
|
stripspace(&buf, strip_comments);
|
|
|
|
write_or_die(1, buf.buf, buf.len);
|
|
strbuf_release(&buf);
|
|
return 0;
|
|
}
|