J SmithThe grep.extendedRegexp configuration setting enables the -E flag on grep by default but there are no equivalents for the -G, -F and -P flags.
Rather than adding an additional setting for grep.fooRegexp for current and future pattern matching options, add a grep.patternType setting that can accept appropriate values for modifying the default grep pattern matching behavior. The current values are "basic", "extended", "fixed", "perl" and "default" for setting -G, -E, -F, -P and the default behavior respectively.
When grep.patternType is set to a value other than "default", the grep.extendedRegexp setting is ignored. The value of "default" restores the current default behavior, including the grep.extendedRegexp behavior.
Signed-off-by: J Smith <dark.panda@gmail.com> --- Documentation/config.txt | 10 ++- Documentation/git-grep.txt | 10 ++- builtin/grep.c | 112 ++++++++++++++++++---------- grep.h | 10 +++ t/t7810-grep.sh | 181 +++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 282 insertions(+), 41 deletions(-)
Show changes to 5 files +282 −42
Documentation/config.txt, Documentation/git-grep.txt, builtin/grep.c, grep.h, t/t7810-grep.sh
diff --git a/Documentation/config.txt b/Documentation/config.txt index a95e5a4..6416cae 100644 --- a/Documentation/config.txt +++ b/Documentation/config.txt @@ -1210,8 +1210,16 @@ gitweb.snapshot:: grep.lineNumber:: If set to true, enable '-n' option by default. +grep.patternType:: + Set the default matching behavior. Using a value of 'basic', 'extended', + 'fixed', or 'perl' will enable the '--basic-regexp', '--extended-regexp', + '--fixed-strings', or '--perl-regexp' option accordingly, while the + value 'default' will return to the default matching behavior. + grep.extendedRegexp:: - If set to true, enable '--extended-regexp' option by default. + If set to true, enable '--extended-regexp' option by default. This + option is ignored when the 'grep.patternType' option is set to a value + other than 'default'. gpg.program:: Use this custom program instead of "gpg" found on $PATH when diff --git a/Documentation/git-grep.txt b/Documentation/git-grep.txt index 3bec036..cfecf84 100644 --- a/Documentation/git-grep.txt +++ b/Documentation/git-grep.txt @@ -42,8 +42,16 @@ CONFIGURATION grep.lineNumber:: If set to true, enable '-n' option by default. +grep.patternType:: + Set the default matching behavior. Using a value of 'basic', 'extended', + 'fixed', or 'perl' will enable the '--basic-regexp', '--extended-regexp', + '--fixed-strings', or '--perl-regexp' option accordingly, while the + value 'default' will return to the default matching behavior. + grep.extendedRegexp:: - If set to true, enable '--extended-regexp' option by default. + If set to true, enable '--extended-regexp' option by default. This + option is ignored when the 'grep.patternType' option is set to a value + other than 'default'. OPTIONS diff --git a/builtin/grep.c b/builtin/grep.c index 29adb0a..7ff64da 100644 --- a/builtin/grep.c +++ b/builtin/grep.c @@ -260,6 +260,53 @@ static int wait_all(void) } #endif +static int parse_pattern_type_arg(const char *opt, const char *arg) +{ + if (!strcmp(arg, "default")) + return GREP_PATTERN_TYPE_UNSPECIFIED; + else if (!strcmp(arg, "basic")) + return GREP_PATTERN_TYPE_BRE; + else if (!strcmp(arg, "extended")) + return GREP_PATTERN_TYPE_ERE; + else if (!strcmp(arg, "fixed")) + return GREP_PATTERN_TYPE_FIXED; + else if (!strcmp(arg, "perl")) + return GREP_PATTERN_TYPE_PCRE; + die("bad %s argument: %s", opt, arg); +} + +static void grep_pattern_type_options(const int pattern_type, struct grep_opt *opt) +{ + switch (pattern_type) { + case GREP_PATTERN_TYPE_UNSPECIFIED: + /* fall through */ + + case GREP_PATTERN_TYPE_BRE: + opt->fixed = 0; + opt->pcre = 0; + opt->regflags &= ~REG_EXTENDED; + break; + + case GREP_PATTERN_TYPE_ERE: + opt->fixed = 0; + opt->pcre = 0; + opt->regflags |= REG_EXTENDED; + break; + + case GREP_PATTERN_TYPE_FIXED: + opt->fixed = 1; + opt->pcre = 0; + opt->regflags &= ~REG_EXTENDED; + break; + + case GREP_PATTERN_TYPE_PCRE: + opt->fixed = 0; + opt->pcre = 1; + opt->regflags &= ~REG_EXTENDED; + break; + } +} + static int grep_config(const char *var, const char *value, void *cb) { struct grep_opt *opt = cb; @@ -270,12 +317,17 @@ static int grep_config(const char *var, const char *value, void *cb) if (!strcmp(var, "grep.extendedregexp")) { if (git_config_bool(var, value)) - opt->regflags |= REG_EXTENDED; + opt->extended_regexp_option = 1; else - opt->regflags &= ~REG_EXTENDED; + opt->extended_regexp_option = 0; return 0; } + if (!strcmp(var, "grep.patterntype")) { + opt->pattern_type_option = parse_pattern_type_arg(var, value); + return 0; + } + if (!strcmp(var, "grep.linenumber")) { opt->linenum = git_config_bool(var, value); return 0; @@ -669,14 +721,7 @@ int cmd_grep(int argc, const char **argv, const char *prefix) int i; int dummy; int use_index = 1; - enum { - pattern_type_unspecified = 0, - pattern_type_bre, - pattern_type_ere, - pattern_type_fixed, - pattern_type_pcre, - }; - int pattern_type = pattern_type_unspecified; + int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED; struct option options[] = { OPT_BOOLEAN(0, "cached", &cached, @@ -703,18 +748,18 @@ int cmd_grep(int argc, const char **argv, const char *prefix) "descend at most <depth> levels", PARSE_OPT_NONEG, NULL, 1 }, OPT_GROUP(""), - OPT_SET_INT('E', "extended-regexp", &pattern_type, + OPT_SET_INT('E', "extended-regexp", &pattern_type_arg, "use extended POSIX regular expressions", - pattern_type_ere), - OPT_SET_INT('G', "basic-regexp", &pattern_type, + GREP_PATTERN_TYPE_ERE), + OPT_SET_INT('G', "basic-regexp", &pattern_type_arg, "use basic POSIX regular expressions (default)", - pattern_type_bre), - OPT_SET_INT('F', "fixed-strings", &pattern_type, + GREP_PATTERN_TYPE_BRE), + OPT_SET_INT('F', "fixed-strings", &pattern_type_arg, "interpret patterns as fixed strings", - pattern_type_fixed), - OPT_SET_INT('P', "perl-regexp", &pattern_type, + GREP_PATTERN_TYPE_FIXED), + OPT_SET_INT('P', "perl-regexp", &pattern_type_arg, "use Perl-compatible regular expressions", - pattern_type_pcre), + GREP_PATTERN_TYPE_PCRE), OPT_GROUP(""), OPT_BOOLEAN('n', "line-number", &opt.linenum, "show line numbers"), OPT_NEGBIT('h', NULL, &opt.pathname, "don't show filenames", 1), @@ -799,6 +844,8 @@ int cmd_grep(int argc, const char **argv, const char *prefix) opt.header_tail = &opt.header_list; opt.regflags = REG_NEWLINE; opt.max_depth = -1; + opt.pattern_type_option = GREP_PATTERN_TYPE_UNSPECIFIED; + opt.extended_regexp_option = 0; strcpy(opt.color_context, ""); strcpy(opt.color_filename, ""); @@ -824,27 +871,14 @@ int cmd_grep(int argc, const char **argv, const char *prefix) PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_STOP_AT_NON_OPTION | PARSE_OPT_NO_INTERNAL_HELP); - switch (pattern_type) { - case pattern_type_fixed: - opt.fixed = 1; - opt.pcre = 0; - break; - case pattern_type_bre: - opt.fixed = 0; - opt.pcre = 0; - opt.regflags &= ~REG_EXTENDED; - break; - case pattern_type_ere: - opt.fixed = 0; - opt.pcre = 0; - opt.regflags |= REG_EXTENDED; - break; - case pattern_type_pcre: - opt.fixed = 0; - opt.pcre = 1; - break; - default: - break; /* nothing */ + + if (pattern_type_arg > GREP_PATTERN_TYPE_UNSPECIFIED) + grep_pattern_type_options(pattern_type_arg, &opt); + else { + if (opt.pattern_type_option > GREP_PATTERN_TYPE_UNSPECIFIED) + grep_pattern_type_options(opt.pattern_type_option, &opt); + else if (opt.extended_regexp_option) + grep_pattern_type_options(GREP_PATTERN_TYPE_ERE, &opt); } if (use_index && !startup_info->have_repository) diff --git a/grep.h b/grep.h index ed7de6b..75afb7b 100644 --- a/grep.h +++ b/grep.h @@ -58,6 +58,14 @@ enum grep_expr_node { GREP_NODE_OR }; +enum grep_pattern_type { + GREP_PATTERN_TYPE_UNSPECIFIED = 0, + GREP_PATTERN_TYPE_BRE, + GREP_PATTERN_TYPE_ERE, + GREP_PATTERN_TYPE_FIXED, + GREP_PATTERN_TYPE_PCRE +}; + struct grep_expr { enum grep_expr_node node; unsigned hit; @@ -103,6 +111,8 @@ struct grep_opt { int max_depth; int funcname; int funcbody; + int extended_regexp_option; + int pattern_type_option; char color_context[COLOR_MAXLEN]; char color_filename[COLOR_MAXLEN]; char color_function[COLOR_MAXLEN]; diff --git a/t/t7810-grep.sh b/t/t7810-grep.sh index 523d041..35d357d 100755 --- a/t/t7810-grep.sh +++ b/t/t7810-grep.sh @@ -250,6 +250,84 @@ do git -c grep.extendedRegexp=true grep "a+b*c" ab >actual && test_cmp expected actual ' + + test_expect_success "grep $L with grep.patterntype=basic" ' + echo "ab:a+bc" >expected && + git -c grep.patterntype=basic grep "a+b*c" ab >actual && + test_cmp expected actual + ' + + test_expect_success "grep $L with grep.patterntype=extended" ' + echo "ab:abc" >expected && + git -c grep.patterntype=extended grep "a+b*c" ab >actual && + test_cmp expected actual + ' + + test_expect_success "grep $L with grep.patterntype=fixed" ' + echo "ab:a+b*c" >expected && + git -c grep.patterntype=fixed grep "a+b*c" ab >actual && + test_cmp expected actual + ' + + test_expect_success LIBPCRE "grep $L with grep.patterntype=perl" ' + echo "ab:a+b*c" >expected && + git -c grep.patterntype=perl grep "a\x{2b}b\x{2a}c" ab >actual && + test_cmp expected actual + ' + + test_expect_success "grep $L with grep.patternType=default and grep.extendedRegexp=true" ' + echo "ab:abc" >expected && + git \ + -c grep.patternType=default \ + -c grep.extendedRegexp=true \ + grep "a+b*c" ab >actual && + test_cmp expected actual + ' + + test_expect_success "grep $L with grep.extendedRegexp=true and grep.patternType=default" ' + echo "ab:abc" >expected && + git \ + -c grep.extendedRegexp=true \ + -c grep.patternType=default \ + grep "a+b*c" ab >actual && + test_cmp expected actual + ' + + test_expect_success 'grep $L with grep.patternType=extended and grep.extendedRegexp=false' ' + echo "ab:abc" >expected && + git \ + -c grep.patternType=extended \ + -c grep.extendedRegexp=false \ + grep "a+b*c" ab >actual && + test_cmp expected actual + ' + + test_expect_success 'grep $L with grep.patternType=basic and grep.extendedRegexp=true' ' + echo "ab:a+bc" >expected && + git \ + -c grep.patternType=basic \ + -c grep.extendedRegexp=true \ + grep "a+b*c" ab >actual && + test_cmp expected actual + ' + + test_expect_success 'grep $L with grep.extendedRegexp=false and grep.patternType=extended' ' + echo "ab:abc" >expected && + git \ + -c grep.extendedRegexp=false \ + -c grep.patternType=extended \ + grep "a+b*c" ab >actual && + test_cmp expected actual + ' + + test_expect_success 'grep $L with grep.extendedRegexp=true and grep.patternType=basic' ' + echo "ab:a+bc" >expected && + git \ + -c grep.extendedRegexp=true \ + -c grep.patternType=basic \ + grep "a+b*c" ab >actual && + test_cmp expected actual + ' done cat >expected <<EOF @@ -761,44 +839,147 @@ test_expect_success 'grep -G invalidpattern properly dies ' ' test_must_fail git grep -G "a[" ' +test_expect_success 'grep invalidpattern properly dies with grep.patternType=basic' ' + test_must_fail git -c grep.patterntype=basic grep "a[" +' + test_expect_success 'grep -E invalidpattern properly dies ' ' test_must_fail git grep -E "a[" ' +test_expect_success 'grep invalidpattern properly dies with grep.patternType=extended' ' + test_must_fail git -c grep.patterntype=extended grep "a[" +' + test_expect_success LIBPCRE 'grep -P invalidpattern properly dies ' ' test_must_fail git grep -P "a[" ' +test_expect_success LIBPCRE 'grep invalidpattern properly dies with grep.patternType=perl' ' + test_must_fail git -c grep.patterntype=perl grep "a[" +' + test_expect_success 'grep -G -E -F pattern' ' echo "ab:a+b*c" >expected && git grep -G -E -F "a+b*c" ab >actual && test_cmp expected actual ' +test_expect_success 'grep pattern with grep.patternType=basic, =extended, =fixed' ' + echo "ab:a+b*c" >expected && + git \ + -c grep.patterntype=basic \ + -c grep.patterntype=extended \ + -c grep.patterntype=fixed \ + grep "a+b*c" ab >actual && + test_cmp expected actual +' + test_expect_success 'grep -E -F -G pattern' ' echo "ab:a+bc" >expected && git grep -E -F -G "a+b*c" ab >actual && test_cmp expected actual ' +test_expect_success 'grep pattern with grep.patternType=extended, =fixed, =basic' ' + echo "ab:a+bc" >expected && + git \ + -c grep.patterntype=extended \ + -c grep.patterntype=fixed \ + -c grep.patterntype=basic \ + grep "a+b*c" ab >actual && + test_cmp expected actual +' + test_expect_success 'grep -F -G -E pattern' ' echo "ab:abc" >expected && git grep -F -G -E "a+b*c" ab >actual && test_cmp expected actual ' +test_expect_success 'grep pattern with grep.patternType=fixed, =basic, =extended' ' + echo "ab:abc" >expected && + git \ + -c grep.patterntype=fixed \ + -c grep.patterntype=basic \ + -c grep.patterntype=extended \ + grep "a+b*c" ab >actual && + test_cmp expected actual +' + test_expect_success 'grep -G -F -P -E pattern' ' >empty && test_must_fail git grep -G -F -P -E "a\x{2b}b\x{2a}c" ab >actual && test_cmp empty actual ' +test_expect_success 'grep pattern with grep.patternType=fixed, =basic, =perl, =extended' ' + >empty && + test_must_fail git \ + -c grep.patterntype=fixed \ + -c grep.patterntype=basic \ + -c grep.patterntype=perl \ + -c grep.patterntype=extended \ + grep "a\x{2b}b\x{2a}c" ab >actual && + test_cmp empty actual +' + test_expect_success LIBPCRE 'grep -G -F -E -P pattern' ' echo "ab:a+b*c" >expected && git grep -G -F -E -P "a\x{2b}b\x{2a}c" ab >actual && test_cmp expected actual ' +test_expect_success LIBPCRE 'grep pattern with grep.patternType=fixed, =basic, =extended, =perl' ' + echo "ab:a+b*c" >expected && + git \ + -c grep.patterntype=fixed \ + -c grep.patterntype=basic \ + -c grep.patterntype=extended \ + -c grep.patterntype=perl \ + grep "a\x{2b}b\x{2a}c" ab >actual && + test_cmp expected actual +' + +test_expect_success LIBPCRE 'grep -P pattern with grep.patternType=fixed' ' + echo "ab:a+b*c" >expected && + git \ + -c grep.patterntype=fixed \ + grep -P "a\x{2b}b\x{2a}c" ab >actual && + test_cmp expected actual +' + +test_expect_success 'grep -F pattern with grep.patternType=basic' ' + echo "ab:a+b*c" >expected && + git \ + -c grep.patterntype=basic \ + grep -F "*c" ab >actual && + test_cmp expected actual +' + +test_expect_success 'grep -G pattern with grep.patternType=fixed' ' + { + echo "ab:a+b*c" + echo "ab:a+bc" + } >expected && + git \ + -c grep.patterntype=fixed \ + grep -G "a+b" ab >actual && + test_cmp expected actual +' + +test_expect_success 'grep -E pattern with grep.patternType=fixed' ' + { + echo "ab:a+b*c" + echo "ab:a+bc" + echo "ab:abc" + } >expected && + git \ + -c grep.patterntype=fixed \ + grep -E "a+" ab >actual && + test_cmp expected actual +' + test_config() { git config "$1" "$2" && test_when_finished "git config --unset $1" -- 1.7.11.3
