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Make the tab width used for whitespace checks configurable

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A new whitespace "rule" is added that sets the tab width to use for
whitespace checks and fix-ups and replaces the hard-coded constant 8.

Since the setting is part of the rules, it can be set per file using
.gitattributes.

The new configuration is backwards compatible because older git versions
simply ignore unknown whitespace rules.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johannes Sixt
2010-11-30 09:29:11 +01:00
committed by Junio C Hamano
parent dee40e5178
commit f4b05a4947
7 changed files with 163 additions and 21 deletions
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22
ws.c
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@@ -56,6 +56,16 @@ unsigned parse_whitespace_rule(const char *string)
rule |= whitespace_rule_names[i].rule_bits;
break;
}
if (strncmp(string, "tabwidth=", 9) == 0) {
unsigned tabwidth = atoi(string + 9);
if (0 < tabwidth && tabwidth < 0100) {
rule &= ~WS_TAB_WIDTH_MASK;
rule |= tabwidth;
}
else
warning("tabwidth %.*s out of range",
(int)(len - 9), string + 9);
}
string = ep;
}
@@ -84,7 +94,7 @@ unsigned whitespace_rule(const char *pathname)
value = attr_whitespace_rule.value;
if (ATTR_TRUE(value)) {
/* true (whitespace) */
unsigned all_rule = 0;
unsigned all_rule = ws_tab_width(whitespace_rule_cfg);
int i;
for (i = 0; i < ARRAY_SIZE(whitespace_rule_names); i++)
if (!whitespace_rule_names[i].loosens_error &&
@@ -93,7 +103,7 @@ unsigned whitespace_rule(const char *pathname)
return all_rule;
} else if (ATTR_FALSE(value)) {
/* false (-whitespace) */
return 0;
return ws_tab_width(whitespace_rule_cfg);
} else if (ATTR_UNSET(value)) {
/* reset to default (!whitespace) */
return whitespace_rule_cfg;
@@ -206,7 +216,7 @@ static unsigned ws_check_emit_1(const char *line, int len, unsigned ws_rule,
}
/* Check for indent using non-tab. */
if ((ws_rule & WS_INDENT_WITH_NON_TAB) && i - written >= 8) {
if ((ws_rule & WS_INDENT_WITH_NON_TAB) && i - written >= ws_tab_width(ws_rule)) {
result |= WS_INDENT_WITH_NON_TAB;
if (stream) {
fputs(ws, stream);
@@ -320,7 +330,7 @@ void ws_fix_copy(struct strbuf *dst, const char *src, int len, unsigned ws_rule,
} else if (ch == ' ') {
last_space_in_indent = i;
if ((ws_rule & WS_INDENT_WITH_NON_TAB) &&
8 <= i - last_tab_in_indent)
ws_tab_width(ws_rule) <= i - last_tab_in_indent)
need_fix_leading_space = 1;
} else
break;
@@ -350,7 +360,7 @@ void ws_fix_copy(struct strbuf *dst, const char *src, int len, unsigned ws_rule,
strbuf_addch(dst, ch);
} else {
consecutive_spaces++;
if (consecutive_spaces == 8) {
if (consecutive_spaces == ws_tab_width(ws_rule)) {
strbuf_addch(dst, '\t');
consecutive_spaces = 0;
}
@@ -369,7 +379,7 @@ void ws_fix_copy(struct strbuf *dst, const char *src, int len, unsigned ws_rule,
if (src[i] == '\t')
do {
strbuf_addch(dst, ' ');
} while ((dst->len - start) % 8);
} while ((dst->len - start) % ws_tab_width(ws_rule));
else
strbuf_addch(dst, src[i]);
}