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whitespace: add tab-in-indent error class

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Some projects and languages use coding style where no tab character is used to
indent the lines.

This only adds support and documentation for "apply --whitespace=warn" and
"diff --check"; later patches add "apply --whitespace=fix" and tests.

Signed-off-by: Chris Webb <chris@arachsys.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Chris Webb 2010-04-03 00:37:08 +01:00 committed by Junio C Hamano
parent 727c3718a5
commit 3e3ec2abe0
3 changed files with 25 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/config.txt
View File

@ -481,6 +481,8 @@ core.whitespace::
error (enabled by default).
* `indent-with-non-tab` treats a line that is indented with 8 or more
space characters as an error (not enabled by default).
* `tab-in-indent` treats a tab character in the initial indent part of
the line as an error (not enabled by default).
* `blank-at-eof` treats blank lines added at the end of file as an error
(enabled by default).
* `trailing-space` is a short-hand to cover both `blank-at-eol` and

1
cache.h
View File

@ -1040,6 +1040,7 @@ void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *
#define WS_INDENT_WITH_NON_TAB 04
#define WS_CR_AT_EOL 010
#define WS_BLANK_AT_EOF 020
#define WS_TAB_IN_INDENT 040
#define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB)
extern unsigned whitespace_rule_cfg;

27
ws.c
View File

@ -19,6 +19,7 @@ static struct whitespace_rule {
{ "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)
@ -57,6 +58,9 @@ unsigned parse_whitespace_rule(const char *string)
}
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;
}
@ -127,6 +131,11 @@ char *whitespace_error_string(unsigned ws)
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);
}
@ -165,7 +174,7 @@ static unsigned ws_check_emit_1(const char *line, int len, unsigned ws_rule,
}
}
/* Check for space before tab in initial indent. */
/* Check indentation */
for (i = 0; i < len; i++) {
if (line[i] == ' ')
continue;
@ -177,11 +186,19 @@ static unsigned ws_check_emit_1(const char *line, int len, unsigned ws_rule,
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;
}