Revision 27852b2c5347ecd815301e668e7415509f1dae07 authored by Patrick Steinhardt on 22 February 2016, 11:23:23 UTC, committed by Junio C Hamano on 22 February 2016, 18:23:30 UTC
When setting up a new tracking branch fails due to issues with the configuration file we do not report any errors to the user and pretend setting the tracking branch succeeded. Setting up the tracking branch is handled by the `install_branch_config` function. We do not want to simply die there as the function is not only invoked when explicitly setting upstream information with `git branch --set-upstream-to=`, but also by `git push --set-upstream` and `git clone`. While it is reasonable to die in the explict first case, we would lose information in the latter two cases, so we only print the error message but continue the program as usual. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent b4c8aba
ws.c
/*
* Whitespace rules
*
* Copyright (c) 2007 Junio C Hamano
*/
#include "cache.h"
#include "attr.h"
static struct whitespace_rule {
const char *rule_name;
unsigned rule_bits;
unsigned loosens_error:1,
exclude_default:1;
} whitespace_rule_names[] = {
{ "trailing-space", WS_TRAILING_SPACE, 0 },
{ "space-before-tab", WS_SPACE_BEFORE_TAB, 0 },
{ "indent-with-non-tab", WS_INDENT_WITH_NON_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)
{
unsigned rule = WS_DEFAULT_RULE;
while (string) {
int i;
size_t len;
const char *ep;
int negated = 0;
string = string + strspn(string, ", \t\n\r");
ep = strchrnul(string, ',');
len = ep - string;
if (*string == '-') {
negated = 1;
string++;
len--;
}
if (!len)
break;
for (i = 0; i < ARRAY_SIZE(whitespace_rule_names); i++) {
if (strncmp(whitespace_rule_names[i].rule_name,
string, len))
continue;
if (negated)
rule &= ~whitespace_rule_names[i].rule_bits;
else
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;
}
static void setup_whitespace_attr_check(struct git_attr_check *check)
{
static struct git_attr *attr_whitespace;
if (!attr_whitespace)
attr_whitespace = git_attr("whitespace");
check[0].attr = attr_whitespace;
}
unsigned whitespace_rule(const char *pathname)
{
struct git_attr_check attr_whitespace_rule;
setup_whitespace_attr_check(&attr_whitespace_rule);
if (!git_check_attr(pathname, 1, &attr_whitespace_rule)) {
const char *value;
value = attr_whitespace_rule.value;
if (ATTR_TRUE(value)) {
/* true (whitespace) */
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 &&
!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 ws_tab_width(whitespace_rule_cfg);
} else if (ATTR_UNSET(value)) {
/* reset to default (!whitespace) */
return whitespace_rule_cfg;
} else {
/* string */
return parse_whitespace_rule(value);
}
} else {
return whitespace_rule_cfg;
}
}
/* The returned string should be freed by the caller. */
char *whitespace_error_string(unsigned ws)
{
struct strbuf err = STRBUF_INIT;
if ((ws & WS_TRAILING_SPACE) == WS_TRAILING_SPACE)
strbuf_addstr(&err, "trailing whitespace");
else {
if (ws & WS_BLANK_AT_EOL)
strbuf_addstr(&err, "trailing whitespace");
if (ws & WS_BLANK_AT_EOF) {
if (err.len)
strbuf_addstr(&err, ", ");
strbuf_addstr(&err, "new blank line at EOF");
}
}
if (ws & WS_SPACE_BEFORE_TAB) {
if (err.len)
strbuf_addstr(&err, ", ");
strbuf_addstr(&err, "space before tab in indent");
}
if (ws & WS_INDENT_WITH_NON_TAB) {
if (err.len)
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);
}
/* If stream is non-NULL, emits the line after checking. */
static unsigned ws_check_emit_1(const char *line, int len, unsigned ws_rule,
FILE *stream, const char *set,
const char *reset, const char *ws)
{
unsigned result = 0;
int written = 0;
int trailing_whitespace = -1;
int trailing_newline = 0;
int trailing_carriage_return = 0;
int i;
/* Logic is simpler if we temporarily ignore the trailing newline. */
if (len > 0 && line[len - 1] == '\n') {
trailing_newline = 1;
len--;
}
if ((ws_rule & WS_CR_AT_EOL) &&
len > 0 && line[len - 1] == '\r') {
trailing_carriage_return = 1;
len--;
}
/* Check for trailing whitespace. */
if (ws_rule & WS_BLANK_AT_EOL) {
for (i = len - 1; i >= 0; i--) {
if (isspace(line[i])) {
trailing_whitespace = i;
result |= WS_BLANK_AT_EOL;
}
else
break;
}
}
if (trailing_whitespace == -1)
trailing_whitespace = len;
/* Check indentation */
for (i = 0; i < trailing_whitespace; i++) {
if (line[i] == ' ')
continue;
if (line[i] != '\t')
break;
if ((ws_rule & WS_SPACE_BEFORE_TAB) && written < i) {
result |= WS_SPACE_BEFORE_TAB;
if (stream) {
fputs(ws, stream);
fwrite(line + written, i - written, 1, stream);
fputs(reset, 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 >= ws_tab_width(ws_rule)) {
result |= WS_INDENT_WITH_NON_TAB;
if (stream) {
fputs(ws, stream);
fwrite(line + written, i - written, 1, stream);
fputs(reset, stream);
}
written = i;
}
if (stream) {
/*
* Now the rest of the line starts at "written".
* The non-highlighted part ends at "trailing_whitespace".
*/
/* Emit non-highlighted (middle) segment. */
if (trailing_whitespace - written > 0) {
fputs(set, stream);
fwrite(line + written,
trailing_whitespace - written, 1, stream);
fputs(reset, stream);
}
/* Highlight errors in trailing whitespace. */
if (trailing_whitespace != len) {
fputs(ws, stream);
fwrite(line + trailing_whitespace,
len - trailing_whitespace, 1, stream);
fputs(reset, stream);
}
if (trailing_carriage_return)
fputc('\r', stream);
if (trailing_newline)
fputc('\n', stream);
}
return result;
}
void ws_check_emit(const char *line, int len, unsigned ws_rule,
FILE *stream, const char *set,
const char *reset, const char *ws)
{
(void)ws_check_emit_1(line, len, ws_rule, stream, set, reset, ws);
}
unsigned ws_check(const char *line, int len, unsigned ws_rule)
{
return ws_check_emit_1(line, len, ws_rule, NULL, NULL, NULL, NULL);
}
int ws_blank_line(const char *line, int len, unsigned ws_rule)
{
/*
* We _might_ want to treat CR differently from other
* whitespace characters when ws_rule has WS_CR_AT_EOL, but
* for now we just use this stupid definition.
*/
while (len-- > 0) {
if (!isspace(*line))
return 0;
line++;
}
return 1;
}
/* 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
* at src. Typically src[len-1] is '\n', unless this is
* the incomplete last line.
*/
int i;
int add_nl_to_tail = 0;
int add_cr_to_tail = 0;
int fixed = 0;
int last_tab_in_indent = -1;
int last_space_in_indent = -1;
int need_fix_leading_space = 0;
/*
* Strip trailing whitespace
*/
if (ws_rule & WS_BLANK_AT_EOL) {
if (0 < len && src[len - 1] == '\n') {
add_nl_to_tail = 1;
len--;
if (0 < len && src[len - 1] == '\r') {
add_cr_to_tail = !!(ws_rule & WS_CR_AT_EOL);
len--;
}
}
if (0 < len && isspace(src[len - 1])) {
while (0 < len && isspace(src[len-1]))
len--;
fixed = 1;
}
}
/*
* Check leading whitespaces (indent)
*/
for (i = 0; i < len; i++) {
char ch = src[i];
if (ch == '\t') {
last_tab_in_indent = i;
if ((ws_rule & WS_SPACE_BEFORE_TAB) &&
0 <= last_space_in_indent)
need_fix_leading_space = 1;
} else if (ch == ' ') {
last_space_in_indent = i;
if ((ws_rule & WS_INDENT_WITH_NON_TAB) &&
ws_tab_width(ws_rule) <= i - last_tab_in_indent)
need_fix_leading_space = 1;
} else
break;
}
if (need_fix_leading_space) {
/* Process indent ourselves */
int consecutive_spaces = 0;
int last = last_tab_in_indent + 1;
if (ws_rule & WS_INDENT_WITH_NON_TAB) {
/* have "last" point at one past the indent */
if (last_tab_in_indent < last_space_in_indent)
last = last_space_in_indent + 1;
else
last = last_tab_in_indent + 1;
}
/*
* between src[0..last-1], strip the funny spaces,
* updating them to tab as needed.
*/
for (i = 0; i < last; i++) {
char ch = src[i];
if (ch != ' ') {
consecutive_spaces = 0;
strbuf_addch(dst, ch);
} else {
consecutive_spaces++;
if (consecutive_spaces == ws_tab_width(ws_rule)) {
strbuf_addch(dst, '\t');
consecutive_spaces = 0;
}
}
}
while (0 < consecutive_spaces--)
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;
}
strbuf_add(dst, src, len);
if (add_cr_to_tail)
strbuf_addch(dst, '\r');
if (add_nl_to_tail)
strbuf_addch(dst, '\n');
if (fixed && error_count)
(*error_count)++;
}
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