From d35711adc4cffe0c4aebd85c197080c7163bcb77 Mon Sep 17 00:00:00 2001 From: Johannes Sixt Date: Tue, 30 Nov 2010 09:22:04 +0100 Subject: [PATCH 1/2] apply --whitespace=fix: fix tab-in-indent When the whitespace rule tab-in-indent is enabled, apply --whitespace=fix replaces tabs by the appropriate amount of blanks. The code used "dst->len % 8" as the criterion to stop adding blanks. But it forgot that dst holds more than just the current line. Consequently, the modulus was computed correctly only for the first added line, but not for the second and subsequent lines. Fix it. Signed-off-by: Johannes Sixt Acked-by: Chris Webb Signed-off-by: Junio C Hamano --- t/t4124-apply-ws-rule.sh | 28 ++++++++++++++++++++++++++++ ws.c | 3 ++- 2 files changed, 30 insertions(+), 1 deletion(-) diff --git a/t/t4124-apply-ws-rule.sh b/t/t4124-apply-ws-rule.sh index 8d46df6c3a..aea052346e 100755 --- a/t/t4124-apply-ws-rule.sh +++ b/t/t4124-apply-ws-rule.sh @@ -121,6 +121,34 @@ test_expect_success 'whitespace=error-all, no rule (attribute)' ' ' +test_expect_success 'spaces inserted by tab-in-indent' ' + + git config core.whitespace -trailing,-space,-indent,tab && + rm -f .gitattributes && + test_fix % && + sed -e "s/_/ /g" -e "s/>/ /" <<-\EOF >expect && + An_SP in an ordinary line>and a HT. + ________A HT (%). + ________A SP and a HT (@%). + _________A SP, a HT and a SP (@%). + _______Seven SP. + ________Eight SP (#). + ________Seven SP and a HT (@%). + ________________Eight SP and a HT (@#%). + _________Seven SP, a HT and a SP (@%). + _________________Eight SP, a HT and a SP (@#%). + _______________Fifteen SP (#). + ________________Fifteen SP and a HT (@#%). + ________________Sixteen SP (#). + ________________________Sixteen SP and a HT (@#%). + _____a__Five SP, a non WS, two SP. + A line with a (!) trailing SP_ + A line with a (!) trailing HT> + EOF + test_cmp expect target + +' + for t in - '' do case "$t" in '') tt='!' ;; *) tt= ;; esac diff --git a/ws.c b/ws.c index d7b8c33f14..b282e8c100 100644 --- a/ws.c +++ b/ws.c @@ -362,12 +362,13 @@ void ws_fix_copy(struct strbuf *dst, const char *src, int len, unsigned ws_rule, 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 % 8); + } while ((dst->len - start) % 8); else strbuf_addch(dst, src[i]); } From f4b05a4947f5f1cf3e01fb61ec5919cc28fe11f7 Mon Sep 17 00:00:00 2001 From: Johannes Sixt Date: Tue, 30 Nov 2010 09:29:11 +0100 Subject: [PATCH 2/2] Make the tab width used for whitespace checks configurable 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 Signed-off-by: Junio C Hamano --- Documentation/config.txt | 3 ++ Documentation/gitattributes.txt | 6 ++- cache.h | 17 ++++--- t/t4015-diff-whitespace.sh | 28 +++++++++++ t/t4019-diff-wserror.sh | 85 +++++++++++++++++++++++++++++++++ t/t4124-apply-ws-rule.sh | 23 ++++++--- ws.c | 22 ++++++--- 7 files changed, 163 insertions(+), 21 deletions(-) diff --git a/Documentation/config.txt b/Documentation/config.txt index 6a6c0b5bd8..7aff5ce2c8 100644 --- a/Documentation/config.txt +++ b/Documentation/config.txt @@ -513,6 +513,9 @@ core.whitespace:: part of the line terminator, i.e. with it, `trailing-space` does not trigger if the character before such a carriage-return is not a whitespace (not enabled by default). +* `tabwidth=` tells how many character positions a tab occupies; this + is relevant for `indent-with-non-tab` and when git fixes `tab-in-indent` + errors. The default tab width is 8. Allowed values are 1 to 63. core.fsyncobjectfiles:: This boolean will enable 'fsync()' when writing object files. diff --git a/Documentation/gitattributes.txt b/Documentation/gitattributes.txt index c80ca5da43..5a7f936429 100644 --- a/Documentation/gitattributes.txt +++ b/Documentation/gitattributes.txt @@ -723,6 +723,8 @@ control per path. Set:: Notice all types of potential whitespace errors known to git. + The tab width is taken from the value of the `core.whitespace` + configuration variable. Unset:: @@ -730,13 +732,13 @@ Unset:: Unspecified:: - Use the value of `core.whitespace` configuration variable to + Use the value of the `core.whitespace` configuration variable to decide what to notice as error. String:: Specify a comma separate list of common whitespace problems to - notice in the same format as `core.whitespace` configuration + notice in the same format as the `core.whitespace` configuration variable. diff --git a/cache.h b/cache.h index 33decd942d..8e8c9d4b35 100644 --- a/cache.h +++ b/cache.h @@ -1087,15 +1087,17 @@ void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char * /* * whitespace rules. * used by both diff and apply + * last two digits are tab width */ -#define WS_BLANK_AT_EOL 01 -#define WS_SPACE_BEFORE_TAB 02 -#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_BLANK_AT_EOL 0100 +#define WS_SPACE_BEFORE_TAB 0200 +#define WS_INDENT_WITH_NON_TAB 0400 +#define WS_CR_AT_EOL 01000 +#define WS_BLANK_AT_EOF 02000 +#define WS_TAB_IN_INDENT 04000 #define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF) -#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB) +#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8) +#define WS_TAB_WIDTH_MASK 077 extern unsigned whitespace_rule_cfg; extern unsigned whitespace_rule(const char *); extern unsigned parse_whitespace_rule(const char *); @@ -1104,6 +1106,7 @@ extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *str extern char *whitespace_error_string(unsigned ws); extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *); extern int ws_blank_line(const char *line, int len, unsigned ws_rule); +#define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK) /* ls-files */ int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset); diff --git a/t/t4015-diff-whitespace.sh b/t/t4015-diff-whitespace.sh index 8622eb51c7..9059bcd69e 100755 --- a/t/t4015-diff-whitespace.sh +++ b/t/t4015-diff-whitespace.sh @@ -344,6 +344,13 @@ test_expect_success 'check spaces as indentation (indent-with-non-tab: on)' ' ' +test_expect_success 'ditto, but tabwidth=9' ' + + git config core.whitespace "indent-with-non-tab,tabwidth=9" && + git diff --check + +' + test_expect_success 'check tabs and spaces as indentation (indent-with-non-tab: on)' ' git config core.whitespace "indent-with-non-tab" && @@ -352,6 +359,20 @@ test_expect_success 'check tabs and spaces as indentation (indent-with-non-tab: ' +test_expect_success 'ditto, but tabwidth=10' ' + + git config core.whitespace "indent-with-non-tab,tabwidth=10" && + test_must_fail git diff --check + +' + +test_expect_success 'ditto, but tabwidth=20' ' + + git config core.whitespace "indent-with-non-tab,tabwidth=20" && + git diff --check + +' + test_expect_success 'check tabs as indentation (tab-in-indent: off)' ' git config core.whitespace "-tab-in-indent" && @@ -376,6 +397,13 @@ test_expect_success 'check tabs and spaces as indentation (tab-in-indent: on)' ' ' +test_expect_success 'ditto, but tabwidth=1 (must be irrelevant)' ' + + git config core.whitespace "tab-in-indent,tabwidth=1" && + test_must_fail git diff --check + +' + test_expect_success 'check tab-in-indent and indent-with-non-tab conflict' ' git config core.whitespace "tab-in-indent,indent-with-non-tab" && diff --git a/t/t4019-diff-wserror.sh b/t/t4019-diff-wserror.sh index f7c85ec604..6f992c88eb 100755 --- a/t/t4019-diff-wserror.sh +++ b/t/t4019-diff-wserror.sh @@ -51,8 +51,65 @@ test_expect_success default ' ' +test_expect_success 'default (attribute)' ' + + test_might_fail git config --unset core.whitespace && + echo "F whitespace" >.gitattributes && + prepare_output && + + grep Eight error >/dev/null && + grep HT error >/dev/null && + grep With error >/dev/null && + grep Return error >/dev/null && + grep No normal >/dev/null + +' + +test_expect_success 'default, tabwidth=10 (attribute)' ' + + git config core.whitespace "tabwidth=10" && + echo "F whitespace" >.gitattributes && + prepare_output && + + grep Eight normal >/dev/null && + grep HT error >/dev/null && + grep With error >/dev/null && + grep Return error >/dev/null && + grep No normal >/dev/null + +' + +test_expect_success 'no check (attribute)' ' + + test_might_fail git config --unset core.whitespace && + echo "F -whitespace" >.gitattributes && + prepare_output && + + grep Eight normal >/dev/null && + grep HT normal >/dev/null && + grep With normal >/dev/null && + grep Return normal >/dev/null && + grep No normal >/dev/null + +' + +test_expect_success 'no check, tabwidth=10 (attribute), must be irrelevant' ' + + git config core.whitespace "tabwidth=10" && + echo "F -whitespace" >.gitattributes && + prepare_output && + + grep Eight normal >/dev/null && + grep HT normal >/dev/null && + grep With normal >/dev/null && + grep Return normal >/dev/null && + grep No normal >/dev/null + +' + test_expect_success 'without -trail' ' + rm -f .gitattributes && git config core.whitespace -trail && prepare_output && @@ -134,6 +191,34 @@ test_expect_success 'with indent-non-tab only (attribute)' ' ' +test_expect_success 'with indent-non-tab only, tabwidth=10' ' + + rm -f .gitattributes && + git config core.whitespace indent,tabwidth=10,-trailing,-space && + prepare_output && + + grep Eight normal >/dev/null && + grep HT normal >/dev/null && + grep With normal >/dev/null && + grep Return normal >/dev/null && + grep No normal >/dev/null + +' + +test_expect_success 'with indent-non-tab only, tabwidth=10 (attribute)' ' + + test_might_fail git config --unset core.whitespace && + echo "F whitespace=indent,-trailing,-space,tabwidth=10" >.gitattributes && + prepare_output && + + grep Eight normal >/dev/null && + grep HT normal >/dev/null && + grep With normal >/dev/null && + grep Return normal >/dev/null && + grep No normal >/dev/null + +' + test_expect_success 'with cr-at-eol' ' rm -f .gitattributes && diff --git a/t/t4124-apply-ws-rule.sh b/t/t4124-apply-ws-rule.sh index 40e5842997..6f6ee88b28 100755 --- a/t/t4124-apply-ws-rule.sh +++ b/t/t4124-apply-ws-rule.sh @@ -10,7 +10,8 @@ prepare_test_file () { # X RULE # ! trailing-space # @ space-before-tab - # # indent-with-non-tab + # # indent-with-non-tab (default tab width 8) + # = indent-with-non-tab,tabwidth=16 # % tab-in-indent sed -e "s/_/ /g" -e "s/>/ /" <<-\EOF An_SP in an ordinary line>and a HT. @@ -25,8 +26,8 @@ prepare_test_file () { ________>_Eight SP, a HT and a SP (@#%). _______________Fifteen SP (#). _______________>Fifteen SP and a HT (@#%). - ________________Sixteen SP (#). - ________________>Sixteen SP and a HT (@#%). + ________________Sixteen SP (#=). + ________________>Sixteen SP and a HT (@#%=). _____a__Five SP, a non WS, two SP. A line with a (!) trailing SP_ A line with a (!) trailing HT> @@ -139,8 +140,8 @@ test_expect_success 'spaces inserted by tab-in-indent' ' _________________Eight SP, a HT and a SP (@#%). _______________Fifteen SP (#). ________________Fifteen SP and a HT (@#%). - ________________Sixteen SP (#). - ________________________Sixteen SP and a HT (@#%). + ________________Sixteen SP (#=). + ________________________Sixteen SP and a HT (@#%=). _____a__Five SP, a non WS, two SP. A line with a (!) trailing SP_ A line with a (!) trailing HT> @@ -157,7 +158,7 @@ do case "$s" in '') ts='@' ;; *) ts= ;; esac for i in - '' do - case "$i" in '') ti='#' ;; *) ti= ;; esac + case "$i" in '') ti='#' ti16='=';; *) ti= ti16= ;; esac for h in - '' do [ -z "$h$i" ] && continue @@ -170,12 +171,22 @@ do test_fix "$tt$ts$ti$th" ' + test_expect_success "rule=$rule,tabwidth=16" ' + git config core.whitespace "$rule,tabwidth=16" && + test_fix "$tt$ts$ti16$th" + ' + test_expect_success "rule=$rule (attributes)" ' git config --unset core.whitespace && echo "target whitespace=$rule" >.gitattributes && test_fix "$tt$ts$ti$th" ' + test_expect_success "rule=$rule,tabwidth=16 (attributes)" ' + echo "target whitespace=$rule,tabwidth=16" >.gitattributes && + test_fix "$tt$ts$ti16$th" + ' + done done done diff --git a/ws.c b/ws.c index e3504360da..9fb9b14760 100644 --- a/ws.c +++ b/ws.c @@ -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]); }