static struct whitespace_rule {
const char *rule_name;
unsigned rule_bits;
- unsigned loosens_error;
+ unsigned loosens_error:1,
+ exclude_default:1;
} whitespace_rule_names[] = {
{ "trailing-space", WS_TRAILING_SPACE, 0 },
{ "space-before-tab", WS_SPACE_BEFORE_TAB, 0 },
{ "cr-at-eol", WS_CR_AT_EOL, 1 },
{ "blank-at-eol", WS_BLANK_AT_EOL, 0 },
{ "blank-at-eof", WS_BLANK_AT_EOF, 0 },
+ { "tab-in-indent", WS_TAB_IN_INDENT, 0, 1 },
};
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;
}
+
+ if (rule & WS_TAB_IN_INDENT && rule & WS_INDENT_WITH_NON_TAB)
+ die("cannot enforce both tab-in-indent and indent-with-non-tab");
return rule;
}
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)
+ if (!whitespace_rule_names[i].loosens_error &&
+ !whitespace_rule_names[i].exclude_default)
all_rule |= whitespace_rule_names[i].rule_bits;
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;
strbuf_addstr(&err, ", ");
strbuf_addstr(&err, "indent with spaces");
}
+ if (ws & WS_TAB_IN_INDENT) {
+ if (err.len)
+ strbuf_addstr(&err, ", ");
+ strbuf_addstr(&err, "tab in indent");
+ }
return strbuf_detach(&err, NULL);
}
}
}
- /* Check for space before tab in initial indent. */
- for (i = 0; i < len; i++) {
+ if (trailing_whitespace == -1)
+ trailing_whitespace = len;
+
+ /* Check indentation */
+ for (i = 0; i < trailing_whitespace; i++) {
if (line[i] == ' ')
continue;
if (line[i] != '\t')
fputs(ws, stream);
fwrite(line + written, i - written, 1, stream);
fputs(reset, stream);
+ fwrite(line + i, 1, 1, stream);
}
- } else if (stream)
- fwrite(line + written, i - written, 1, stream);
- if (stream)
- fwrite(line + i, 1, 1, stream);
+ } else if (ws_rule & WS_TAB_IN_INDENT) {
+ result |= WS_TAB_IN_INDENT;
+ if (stream) {
+ fwrite(line + written, i - written, 1, stream);
+ fputs(ws, stream);
+ fwrite(line + i, 1, 1, stream);
+ fputs(reset, stream);
+ }
+ } else if (stream) {
+ fwrite(line + written, i - written + 1, 1, stream);
+ }
written = i + 1;
}
/* 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);
* 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 - written > 0) {
return 1;
}
-/* Copy the line to the buffer while fixing whitespaces */
-int ws_fix_copy(char *dst, const char *src, int len, unsigned ws_rule, int *error_count)
+/* Copy the line onto the end of the strbuf while fixing whitespaces */
+void ws_fix_copy(struct strbuf *dst, const char *src, int len, unsigned ws_rule, int *error_count)
{
/*
* len is number of bytes to be copied from src, starting
int last_tab_in_indent = -1;
int last_space_in_indent = -1;
int need_fix_leading_space = 0;
- char *buf;
/*
* Strip trailing whitespace
} 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;
}
- buf = dst;
if (need_fix_leading_space) {
/* Process indent ourselves */
int consecutive_spaces = 0;
char ch = src[i];
if (ch != ' ') {
consecutive_spaces = 0;
- *dst++ = ch;
+ strbuf_addch(dst, ch);
} else {
consecutive_spaces++;
- if (consecutive_spaces == 8) {
- *dst++ = '\t';
+ if (consecutive_spaces == ws_tab_width(ws_rule)) {
+ strbuf_addch(dst, '\t');
consecutive_spaces = 0;
}
}
}
while (0 < consecutive_spaces--)
- *dst++ = ' ';
+ strbuf_addch(dst, ' ');
+ len -= last;
+ src += last;
+ fixed = 1;
+ } else if ((ws_rule & WS_TAB_IN_INDENT) && last_tab_in_indent >= 0) {
+ /* Expand tabs into spaces */
+ int start = dst->len;
+ int last = last_tab_in_indent + 1;
+ for (i = 0; i < last; i++) {
+ if (src[i] == '\t')
+ do {
+ strbuf_addch(dst, ' ');
+ } while ((dst->len - start) % ws_tab_width(ws_rule));
+ else
+ strbuf_addch(dst, src[i]);
+ }
len -= last;
src += last;
fixed = 1;
}
- memcpy(dst, src, len);
+ strbuf_add(dst, src, len);
if (add_cr_to_tail)
- dst[len++] = '\r';
+ strbuf_addch(dst, '\r');
if (add_nl_to_tail)
- dst[len++] = '\n';
+ strbuf_addch(dst, '\n');
if (fixed && error_count)
(*error_count)++;
- return dst + len - buf;
}