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grep: fix -E + {range}; fix -o not printing all matches (bug 489)

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two different bugs, one with EXTRA_COMPAT, other without.

function                                             old     new   delta
grep_file                                           1132    1129      -3

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2009-07-29 01:20:09 +02:00
parent 97af2ff8ca
commit 09449630fb
2 changed files with 26 additions and 15 deletions
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36
findutils/grep.c
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@@ -120,17 +120,18 @@ struct globals {
} while (0)
#define max_matches (G.max_matches )
#if !ENABLE_EXTRA_COMPAT
#define reflags (G.reflags )
# define reflags (G.reflags )
#else
#define case_fold (G.case_fold )
# define case_fold (G.case_fold )
/* http://www.delorie.com/gnu/docs/regex/regex_46.html */
#define reflags re_syntax_options
#undef REG_NOSUB
#undef REG_EXTENDED
#undef REG_ICASE
#define REG_NOSUB bug:is:here /* should not be used */
#define REG_EXTENDED RE_SYNTAX_EGREP
#define REG_ICASE bug:is:here /* should not be used */
# define reflags re_syntax_options
# undef REG_NOSUB
# undef REG_EXTENDED
# undef REG_ICASE
# define REG_NOSUB bug:is:here /* should not be used */
/* Just RE_SYNTAX_EGREP is not enough, need to enable {n[,[m]]} too */
# define REG_EXTENDED (RE_SYNTAX_EGREP | RE_INTERVALS | RE_NO_BK_BRACES)
# define REG_ICASE bug:is:here /* should not be used */
#endif
#define invert_search (G.invert_search )
#define print_filename (G.print_filename )
@@ -370,17 +371,22 @@ static int grep_file(FILE *file)
if (found)
print_line(gl->pattern, strlen(gl->pattern), linenum, ':');
} else while (1) {
char old = line[gl->matched_range.rm_eo];
line[gl->matched_range.rm_eo] = '\0';
unsigned end = gl->matched_range.rm_eo;
char old = line[end];
line[end] = '\0';
print_line(line + gl->matched_range.rm_so,
gl->matched_range.rm_eo - gl->matched_range.rm_so,
end - gl->matched_range.rm_so,
linenum, ':');
line[gl->matched_range.rm_eo] = old;
line[end] = old;
#if !ENABLE_EXTRA_COMPAT
break;
if (regexec(&gl->compiled_regex, line + end,
1, &gl->matched_range, REG_NOTBOL) != 0)
break;
gl->matched_range.rm_so += end;
gl->matched_range.rm_eo += end;
#else
if (re_search(&gl->compiled_regex, line, line_len,
gl->matched_range.rm_eo, line_len - gl->matched_range.rm_eo,
end, line_len - end,
&gl->matched_range) < 0)
break;
#endif