diff options
| -rw-r--r-- | usr.bin/grep/util.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/usr.bin/grep/util.c b/usr.bin/grep/util.c index 4ab7b06..437a264 100644 --- a/usr.bin/grep/util.c +++ b/usr.bin/grep/util.c @@ -55,6 +55,9 @@ __FBSDID("$FreeBSD$"); static int linesqueued; static int procline(struct str *l, int); +static int lasta; +static bool ctxover; + bool file_matching(const char *fname) { @@ -204,8 +207,10 @@ procfile(const char *fn) strcpy(ln.file, fn); ln.line_no = 0; ln.len = 0; + ctxover = false; linesqueued = 0; tail = 0; + lasta = 0; ln.off = -1; for (c = 0; c == 0 || !(lflag || qflag); ) { @@ -227,10 +232,24 @@ procfile(const char *fn) free(f); return (0); } - /* Process the file line-by-line */ + + /* Process the file line-by-line, enqueue non-matching lines */ if ((t = procline(&ln, f->binary)) == 0 && Bflag > 0) { - enqueue(&ln); - linesqueued++; + /* Except don't enqueue lines that appear in -A ctx */ + if (ln.line_no == 0 || lasta != ln.line_no) { + /* queue is maxed to Bflag number of lines */ + enqueue(&ln); + linesqueued++; + ctxover = false; + } else { + /* + * Indicate to procline() that we have ctx + * overlap and make sure queue is empty. + */ + if (!ctxover) + clearqueue(); + ctxover = true; + } } c += t; if (mflag && mcount <= 0) @@ -385,17 +404,19 @@ procline(struct str *l, int nottext) /* Dealing with the context */ if ((tail || c) && !cflag && !qflag && !lflag && !Lflag) { if (c) { - if (!first && !prev && !tail && Aflag) + if (!first && !prev && !tail && (Bflag || Aflag) && + !ctxover) printf("--\n"); tail = Aflag; if (Bflag > 0) { - if (!first && !prev) - printf("--\n"); printqueue(); + ctxover = false; } linesqueued = 0; printline(l, ':', matches, m); } else { + /* Print -A lines following matches */ + lasta = l->line_no; printline(l, '-', matches, m); tail--; } |
