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blame: simplify prepare_lines()

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Changing get_next_line() to return the end pointer instead of NULL in
case no newline character is found treats allows us to treat complete
and incomplete lines the same, simplifying the code.  Switching to
counting lines instead of EOLs allows us to start counting at the
first character, instead of having to call get_next_line() first.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe 2014-06-13 21:54:59 +02:00 committed by Junio C Hamano
parent 29aa0b2061
commit 60d85e110b
1 changed files with 7 additions and 13 deletions
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20
builtin/blame.c
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@ -1744,7 +1744,7 @@ static void output(struct scoreboard *sb, int option)
static const char *get_next_line(const char *start, const char *end)
{
const char *nl = memchr(start, '\n', end - start);
return nl ? nl + 1 : NULL;
return nl ? nl + 1 : end;
}
/*
@ -1758,25 +1758,19 @@ static int prepare_lines(struct scoreboard *sb)
const char *end = buf + len;
const char *p;
int *lineno;
int num = 0, incomplete = 0;
int num = 0;
for (p = get_next_line(buf, end); p; p = get_next_line(p, end))
for (p = buf; p < end; p = get_next_line(p, end))
num++;
if (len && end[-1] != '\n')
incomplete++; /* incomplete line at the end */
sb->lineno = lineno = xmalloc(sizeof(*sb->lineno) * (num + 1));
sb->lineno = xmalloc(sizeof(*sb->lineno) * (num + incomplete + 1));
lineno = sb->lineno;
*lineno++ = 0;
for (p = get_next_line(buf, end); p; p = get_next_line(p, end))
for (p = buf; p < end; p = get_next_line(p, end))
*lineno++ = p - buf;
if (incomplete)
*lineno++ = len;
*lineno = len;
sb->num_lines = num + incomplete;
sb->num_lines = num;
return sb->num_lines;
}