diff options
| -rw-r--r-- | editors/vi.c | 85 |
1 files changed, 36 insertions, 49 deletions
diff --git a/editors/vi.c b/editors/vi.c index 1c5a32b..5dc14f1 100644 --- a/editors/vi.c +++ b/editors/vi.c @@ -3486,70 +3486,57 @@ static void do_cmd(int c) break; #endif #if ENABLE_FEATURE_VI_SEARCH - case '?': // /- search for a pattern - case '/': // /- search for a pattern + case 'N': // N- backward search for last pattern + dir = last_search_pattern[0] == '/' ? BACK : FORWARD; + goto dc4; // now search for pattern + break; + case '?': // ?- backward search for a pattern + case '/': // /- forward search for a pattern buf[0] = c; buf[1] = '\0'; q = get_input_line(buf); // get input line- use "status line" - if (q[0] && !q[1]) { + if (!q[0]) // user changed mind and erased the "/"- do nothing + break; + if (!q[1]) { // if no pat re-use old pat if (last_search_pattern[0]) last_search_pattern[0] = c; - goto dc3; // if no pat re-use old pat - } - if (q[0]) { // strlen(q) > 1: new pat- save it and find - // there is a new pat + } else { // strlen(q) > 1: new pat- save it and find free(last_search_pattern); last_search_pattern = xstrdup(q); - goto dc3; // now find the pattern } - // user changed mind and erased the "/"- do nothing - break; - case 'N': // N- backward search for last pattern - dir = BACK; // assume BACKWARD search - p = dot - 1; - if (last_search_pattern[0] == '?') { - dir = FORWARD; - p = dot + 1; - } - goto dc4; // now search for pattern - break; + // fall through case 'n': // n- repeat search for last pattern // search rest of text[] starting at next char - // if search fails return orignal "p" not the "p+1" address - do { - const char *msg; - dc3: - dir = FORWARD; // assume FORWARD search - p = dot + 1; - if (last_search_pattern[0] == '?') { - dir = BACK; - p = dot - 1; - } + // if search fails "dot" is unchanged + dir = last_search_pattern[0] == '/' ? FORWARD : BACK; dc4: - q = char_search(p, last_search_pattern + 1, (dir << 1) | FULL); + if (last_search_pattern[1] == '\0') { + status_line_bold("No previous search"); + break; + } + do { + q = char_search(dot + dir, last_search_pattern + 1, + (dir << 1) | FULL); if (q != NULL) { dot = q; // good search, update "dot" - msg = NULL; - goto dc2; - } - // no pattern found between "dot" and "end"- continue at top - p = text; - if (dir == BACK) { - p = end - 1; - } - q = char_search(p, last_search_pattern + 1, (dir << 1) | FULL); - if (q != NULL) { // found something - dot = q; // found new pattern- goto it - msg = "search hit BOTTOM, continuing at TOP"; - if (dir == BACK) { - msg = "search hit TOP, continuing at BOTTOM"; - } } else { - msg = "Pattern not found"; + // no pattern found between "dot" and top/bottom of file + // continue from other end of file + const char *msg; + q = char_search(dir == FORWARD ? text : end - 1, + last_search_pattern + 1, (dir << 1) | FULL); + if (q != NULL) { // found something + dot = q; // found new pattern- goto it + msg = "search hit %s, continuing at %s"; + } else { // pattern is nowhere in file + cmdcnt = 0; // force exit from loop + msg = "Pattern not found"; + } + if (dir == FORWARD) + status_line_bold(msg, "BOTTOM", "TOP"); + else + status_line_bold(msg, "TOP", "BOTTOM"); } - dc2: - if (msg) - status_line_bold("%s", msg); } while (--cmdcnt > 0); break; case '{': // {- move backward paragraph |