Make grep/egrep/fgrep independently selectable
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
97e9a72c71
commit
1924e99ad3
@ -18,45 +18,41 @@
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* (C) 2006 Jac Goudsmit added -o option
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*/
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//applet:IF_GREP(APPLET(grep, BB_DIR_BIN, BB_SUID_DROP))
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//applet:IF_FEATURE_GREP_EGREP_ALIAS(APPLET_ODDNAME(egrep, grep, BB_DIR_BIN, BB_SUID_DROP, egrep))
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//applet:IF_FEATURE_GREP_FGREP_ALIAS(APPLET_ODDNAME(fgrep, grep, BB_DIR_BIN, BB_SUID_DROP, fgrep))
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//kbuild:lib-$(CONFIG_GREP) += grep.o
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//config:config GREP
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//config: bool "grep"
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//config: default y
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//config: help
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//config: grep is used to search files for a specified pattern.
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//config:
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//config:config FEATURE_GREP_EGREP_ALIAS
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//config: bool "Enable extended regular expressions (egrep & grep -E)"
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//config:config EGREP
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//config: bool "egrep"
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//config: default y
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//config: depends on GREP
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//config: help
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//config: Enabled support for extended regular expressions. Extended
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//config: regular expressions allow for alternation (foo|bar), grouping,
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//config: and various repetition operators.
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//config: Alias to "grep -E"
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//config:
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//config:config FEATURE_GREP_FGREP_ALIAS
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//config: bool "Alias fgrep to grep -F"
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//config:config FGREP
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//config: bool "fgrep"
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//config: default y
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//config: depends on GREP
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//config: help
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//config: fgrep sees the search pattern as a normal string rather than
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//config: regular expressions.
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//config: grep -F always works, this just creates the fgrep alias.
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//config: Alias to "grep -F"
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//config:
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//config:config FEATURE_GREP_CONTEXT
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//config: bool "Enable before and after context flags (-A, -B and -C)"
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//config: default y
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//config: depends on GREP
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//config: depends on GREP || EGREP
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//config: help
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//config: Print the specified number of leading (-B) and/or trailing (-A)
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//config: context surrounding our matching lines.
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//config: Print the specified number of context lines (-C).
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//applet:IF_GREP(APPLET(grep, BB_DIR_BIN, BB_SUID_DROP))
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//applet:IF_EGREP(APPLET_ODDNAME(egrep, grep, BB_DIR_BIN, BB_SUID_DROP, egrep))
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//applet:IF_FGREP(APPLET_ODDNAME(fgrep, grep, BB_DIR_BIN, BB_SUID_DROP, fgrep))
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//kbuild:lib-$(CONFIG_GREP) += grep.o
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//kbuild:lib-$(CONFIG_EGREP) += grep.o
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//kbuild:lib-$(CONFIG_FGREP) += grep.o
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#include "libbb.h"
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#include "common_bufsiz.h"
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#include "xregex.h"
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@ -64,9 +60,7 @@
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/* options */
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//usage:#define grep_trivial_usage
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//usage: "[-HhnlLoqvsriw"
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//usage: "F"
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//usage: IF_FEATURE_GREP_EGREP_ALIAS("E")
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//usage: "[-HhnlLoqvsriwFE"
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//usage: IF_EXTRA_COMPAT("z")
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//usage: "] [-m N] "
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//usage: IF_FEATURE_GREP_CONTEXT("[-A/B/C N] ")
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@ -88,9 +82,7 @@
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//usage: "\n -w Match whole words only"
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//usage: "\n -x Match whole lines only"
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//usage: "\n -F PATTERN is a literal (not regexp)"
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//usage: IF_FEATURE_GREP_EGREP_ALIAS(
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//usage: "\n -E PATTERN is an extended regexp"
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//usage: )
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//usage: IF_EXTRA_COMPAT(
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//usage: "\n -z Input is NUL terminated"
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//usage: )
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@ -117,7 +109,7 @@
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#define OPTSTR_GREP \
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"lnqvscFiHhe:*f:*Lorm:+wx" \
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IF_FEATURE_GREP_CONTEXT("A:+B:+C:+") \
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IF_FEATURE_GREP_EGREP_ALIAS("E") \
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"E" \
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IF_EXTRA_COMPAT("z") \
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"aI"
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/* ignored: -a "assume all files to be text" */
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@ -144,7 +136,7 @@ enum {
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IF_FEATURE_GREP_CONTEXT( OPTBIT_A ,) /* -A NUM: after-match context */
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IF_FEATURE_GREP_CONTEXT( OPTBIT_B ,) /* -B NUM: before-match context */
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IF_FEATURE_GREP_CONTEXT( OPTBIT_C ,) /* -C NUM: -A and -B combined */
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IF_FEATURE_GREP_EGREP_ALIAS(OPTBIT_E ,) /* extended regexp */
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OPTBIT_E, /* extended regexp */
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IF_EXTRA_COMPAT( OPTBIT_z ,) /* input is NUL terminated */
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OPT_l = 1 << OPTBIT_l,
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OPT_n = 1 << OPTBIT_n,
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@ -167,7 +159,7 @@ enum {
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OPT_A = IF_FEATURE_GREP_CONTEXT( (1 << OPTBIT_A)) + 0,
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OPT_B = IF_FEATURE_GREP_CONTEXT( (1 << OPTBIT_B)) + 0,
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OPT_C = IF_FEATURE_GREP_CONTEXT( (1 << OPTBIT_C)) + 0,
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OPT_E = IF_FEATURE_GREP_EGREP_ALIAS((1 << OPTBIT_E)) + 0,
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OPT_E = 1 << OPTBIT_E,
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OPT_z = IF_EXTRA_COMPAT( (1 << OPTBIT_z)) + 0,
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};
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@ -744,7 +736,7 @@ int grep_main(int argc UNUSED_PARAM, char **argv)
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}
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}
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if (ENABLE_FEATURE_GREP_FGREP_ALIAS && applet_name[0] == 'f')
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if (ENABLE_FGREP && applet_name[0] == 'f')
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option_mask32 |= OPT_F;
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#if !ENABLE_EXTRA_COMPAT
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@ -752,8 +744,8 @@ int grep_main(int argc UNUSED_PARAM, char **argv)
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reflags = REG_NOSUB;
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#endif
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if (ENABLE_FEATURE_GREP_EGREP_ALIAS
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&& (applet_name[0] == 'e' || (option_mask32 & OPT_E))
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if ((ENABLE_EGREP && applet_name[0] == 'e')
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|| (option_mask32 & OPT_E)
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) {
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reflags |= REG_EXTENDED;
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}
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@ -96,7 +96,7 @@ testing "grep -x -F (partial match 1)" "grep -x -F foo input ; echo \$?" \
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testing "grep -x -F (partial match 2)" "grep -x -F foo input ; echo \$?" \
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"1\n" "bar foo\n" ""
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optional FEATURE_GREP_EGREP_ALIAS
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optional EGREP
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testing "grep -E supports extended regexps" "grep -E fo+" "foo\n" "" \
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"b\ar\nfoo\nbaz"
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testing "grep is also egrep" "egrep foo" "foo\n" "" "foo\nbar\n"
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