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whitespace: minor cleanup

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The variable leading_space is initially used to represent the index of
the last space seen before a non-space.  Then later it represents the
index of the first non-indent character.

It will prove simpler to replace it by a variable representing a number
of bytes.  Eventually it will represent the number of bytes written so
far (in the stream != NULL case).

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
J. Bruce Fields 2007-12-16 11:31:39 -05:00 committed by Junio C Hamano
parent 1020999a98
commit 954ecd4353
1 changed files with 9 additions and 12 deletions
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21
ws.c
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@ -121,7 +121,7 @@ unsigned check_and_emit_line(const char *line, int len, unsigned ws_rule,
const char *reset, const char *ws)
{
unsigned result = 0;
int leading_space = -1;
int written = 0;
int trailing_whitespace = -1;
int trailing_newline = 0;
int i;
@ -147,18 +147,18 @@ unsigned check_and_emit_line(const char *line, int len, unsigned ws_rule,
/* Check for space before tab in initial indent. */
for (i = 0; i < len; i++) {
if (line[i] == ' ') {
leading_space = i;
written = i + 1;
continue;
}
if (line[i] != '\t')
break;
if ((ws_rule & WS_SPACE_BEFORE_TAB) && (leading_space != -1))
if ((ws_rule & WS_SPACE_BEFORE_TAB) && (written != 0))
result |= WS_SPACE_BEFORE_TAB;
break;
}
/* Check for indent using non-tab. */
if ((ws_rule & WS_INDENT_WITH_NON_TAB) && leading_space >= 7)
if ((ws_rule & WS_INDENT_WITH_NON_TAB) && written >= 8)
result |= WS_INDENT_WITH_NON_TAB;
if (stream) {
@ -166,23 +166,20 @@ unsigned check_and_emit_line(const char *line, int len, unsigned ws_rule,
if ((result & WS_SPACE_BEFORE_TAB) ||
(result & WS_INDENT_WITH_NON_TAB)) {
fputs(ws, stream);
fwrite(line, leading_space + 1, 1, stream);
fwrite(line, written, 1, stream);
fputs(reset, stream);
leading_space++;
}
else
leading_space = 0;
/* Now the rest of the line starts at leading_space.
/* Now the rest of the line starts at written.
* The non-highlighted part ends at trailing_whitespace. */
if (trailing_whitespace == -1)
trailing_whitespace = len;
/* Emit non-highlighted (middle) segment. */
if (trailing_whitespace - leading_space > 0) {
if (trailing_whitespace - written > 0) {
fputs(set, stream);
fwrite(line + leading_space,
trailing_whitespace - leading_space, 1, stream);
fwrite(line + written,
trailing_whitespace - written, 1, stream);
fputs(reset, stream);
}