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-rw-r--r--contrib/less/command.c189
1 files changed, 131 insertions, 58 deletions
diff --git a/contrib/less/command.c b/contrib/less/command.c
index 8e0ae4b34d67..ae59181c2827 100644
--- a/contrib/less/command.c
+++ b/contrib/less/command.c
@@ -1,6 +1,6 @@
/* $FreeBSD$ */
/*
- * Copyright (C) 1984-2020 Mark Nudelman
+ * Copyright (C) 1984-2021 Mark Nudelman
*
* You may distribute under the terms of either the GNU General Public
* License or the Less License, as specified in the README file.
@@ -57,21 +57,22 @@ extern void *ml_shell;
extern char *editor;
extern char *editproto;
#endif
-extern int screen_trashed; /* The screen has been overwritten */
+extern int screen_trashed; /* The screen has been overwritten */
extern int shift_count;
extern int oldbot;
extern int forw_prompt;
+extern int incr_search;
#if MSDOS_COMPILER==WIN32C
extern int utf_mode;
#endif
#if SHELL_ESCAPE
-static char *shellcmd = NULL; /* For holding last shell command for "!!" */
+static char *shellcmd = NULL; /* For holding last shell command for "!!" */
#endif
-static int mca; /* The multicharacter command (action) */
-static int search_type; /* The previous type of search */
-static LINENUM number; /* The number typed by the user */
-static long fraction; /* The fractional part of the number */
+static int mca; /* The multicharacter command (action) */
+static int search_type; /* The previous type of search */
+static LINENUM number; /* The number typed by the user */
+static long fraction; /* The fractional part of the number */
static struct loption *curropt;
static int opt_lower;
static int optflag;
@@ -113,7 +114,6 @@ set_mca(action)
int action;
{
mca = action;
- deinit_mouse(); /* we don't want mouse events while entering a cmd */
clear_bot();
clear_cmd();
}
@@ -127,7 +127,6 @@ clear_mca(VOID_PARAM)
if (mca == 0)
return;
mca = 0;
- init_mouse();
}
/*
@@ -177,6 +176,8 @@ mca_search(VOID_PARAM)
cmd_putstr("Keep-pos ");
if (search_type & SRCH_NO_REGEX)
cmd_putstr("Regex-off ");
+ if (search_type & SRCH_WRAP)
+ cmd_putstr("Wrap ");
#if HILITE_SEARCH
if (search_type & SRCH_FILTER)
@@ -520,9 +521,9 @@ mca_search_char(c)
/*
* Certain characters as the first char of
* the pattern have special meaning:
- * ! Toggle the NO_MATCH flag
- * * Toggle the PAST_EOF flag
- * @ Toggle the FIRST_FILE flag
+ * ! Toggle the NO_MATCH flag
+ * * Toggle the PAST_EOF flag
+ * @ Toggle the FIRST_FILE flag
*/
if (len_cmdbuf() > 0)
return (NO_MCA);
@@ -547,6 +548,10 @@ mca_search_char(c)
if (mca != A_FILTER)
flag = SRCH_NO_MOVE;
break;
+ case CONTROL('W'): /* WRAP around */
+ if (mca != A_FILTER)
+ flag = SRCH_WRAP;
+ break;
case CONTROL('R'): /* Don't use REGULAR EXPRESSIONS */
flag = SRCH_NO_REGEX;
break;
@@ -558,7 +563,8 @@ mca_search_char(c)
if (flag != 0)
{
- search_type ^= flag;
+ /* Toggle flag, but keep PAST_EOF and WRAP mutually exclusive. */
+ search_type ^= flag | (search_type & (SRCH_PAST_EOF|SRCH_WRAP));
mca_search();
return (MCA_MORE);
}
@@ -596,9 +602,16 @@ mca_char(c)
* Entering digits of a number.
* Terminated by a non-digit.
*/
- if (!((c >= '0' && c <= '9') || c == '.') &&
- editchar(c, EC_PEEK|EC_NOHISTORY|EC_NOCOMPLETE|EC_NORIGHTLEFT) == A_INVALID)
+ if ((c >= '0' && c <= '9') || c == '.')
+ break;
+ switch (editchar(c, ECF_PEEK|ECF_NOHISTORY|ECF_NOCOMPLETE|ECF_NORIGHTLEFT))
{
+ case A_NOACTION:
+ /*
+ * Ignore this char and get another one.
+ */
+ return (MCA_MORE);
+ case A_INVALID:
/*
* Not part of the number.
* End the number and treat this char
@@ -651,15 +664,44 @@ mca_char(c)
*/
return (MCA_DONE);
- if ((mca == A_F_BRACKET || mca == A_B_BRACKET) && len_cmdbuf() >= 2)
+ switch (mca)
{
- /*
- * Special case for the bracket-matching commands.
- * Execute the command after getting exactly two
- * characters from the user.
- */
- exec_mca();
- return (MCA_DONE);
+ case A_F_BRACKET:
+ case A_B_BRACKET:
+ if (len_cmdbuf() >= 2)
+ {
+ /*
+ * Special case for the bracket-matching commands.
+ * Execute the command after getting exactly two
+ * characters from the user.
+ */
+ exec_mca();
+ return (MCA_DONE);
+ }
+ break;
+ case A_F_SEARCH:
+ case A_B_SEARCH:
+ if (incr_search)
+ {
+ /* Incremental search: do a search after every input char. */
+ int st = (search_type & (SRCH_FORW|SRCH_BACK|SRCH_NO_MATCH|SRCH_NO_REGEX|SRCH_NO_MOVE|SRCH_WRAP));
+ char *pattern = get_cmdbuf();
+ cmd_exec();
+ if (*pattern == '\0')
+ {
+ /* User has backspaced to an empty pattern. */
+ undo_search(1);
+ } else
+ {
+ if (search(st | SRCH_INCR, pattern, 1) != 0)
+ /* No match, invalid pattern, etc. */
+ undo_search(1);
+ }
+ /* Redraw the search prompt and search string. */
+ mca_search();
+ cmd_repaint(NULL);
+ }
+ break;
}
/*
@@ -695,12 +737,6 @@ make_display(VOID_PARAM)
if (empty_screen())
{
if (initial_scrpos.pos == NULL_POSITION)
- /*
- * {{ Maybe this should be:
- * jump_loc(ch_zero(), jump_sline);
- * but this behavior seems rather unexpected
- * on the first screen. }}
- */
jump_loc(ch_zero(), 1);
else
jump_loc(initial_scrpos.pos, initial_scrpos.ln);
@@ -793,11 +829,16 @@ prompt(VOID_PARAM)
clear_cmd();
forw_prompt = 0;
p = pr_string();
+#if HILITE_SEARCH
if (is_filtering())
putstr("& ");
+#endif
if (p == NULL || *p == '\0')
+ {
+ at_enter(AT_NORMAL|AT_COLOR_PROMPT);
putchr(':');
- else
+ at_exit();
+ } else
{
#if MSDOS_COMPILER==WIN32C
WCHAR w[MAX_PATH*2];
@@ -807,7 +848,7 @@ prompt(VOID_PARAM)
0, w, -1, a, sizeof(a), NULL, NULL);
p = a;
#endif
- at_enter(AT_STANDOUT);
+ at_enter(AT_STANDOUT|AT_COLOR_PROMPT);
putstr(p);
at_exit();
}
@@ -843,7 +884,7 @@ getcc_end_command(VOID_PARAM)
return ('\n');
default:
/* Some other incomplete command. Let user complete it. */
- return (getchr());
+ return ((ungot == NULL) ? getchr() : 0);
}
}
@@ -856,23 +897,26 @@ getcc_end_command(VOID_PARAM)
static LWCHAR
getccu(VOID_PARAM)
{
- LWCHAR c;
- if (ungot == NULL)
+ LWCHAR c = 0;
+ while (c == 0)
{
- /* Normal case: no ungotten chars.
- * Get char from the user. */
- c = getchr();
- } else
- {
- /* Ungotten chars available:
- * Take the top of stack (most recent). */
- struct ungot *ug = ungot;
- c = ug->ug_char;
- ungot = ug->ug_next;
- free(ug);
-
- if (c == CHAR_END_COMMAND)
- c = getcc_end_command();
+ if (ungot == NULL)
+ {
+ /* Normal case: no ungotten chars.
+ * Get char from the user. */
+ c = getchr();
+ } else
+ {
+ /* Ungotten chars available:
+ * Take the top of stack (most recent). */
+ struct ungot *ug = ungot;
+ c = ug->ug_char;
+ ungot = ug->ug_next;
+ free(ug);
+
+ if (c == CHAR_END_COMMAND)
+ c = getcc_end_command();
+ }
}
return (c);
}
@@ -948,6 +992,28 @@ ungetcc(c)
}
/*
+ * "Unget" a command character.
+ * If any other chars are already ungotten, put this one after those.
+ */
+ public void
+ungetcc_back(c)
+ LWCHAR c;
+{
+ struct ungot *ug = (struct ungot *) ecalloc(1, sizeof(struct ungot));
+ ug->ug_char = c;
+ ug->ug_next = NULL;
+ if (ungot == NULL)
+ ungot = ug;
+ else
+ {
+ struct ungot *pu;
+ for (pu = ungot; pu->ug_next != NULL; pu = pu->ug_next)
+ continue;
+ pu->ug_next = ug;
+ }
+}
+
+/*
* Unget a whole string of command characters.
* The next sequence of getcc()'s will return this string.
*/
@@ -955,10 +1021,8 @@ ungetcc(c)
ungetsc(s)
char *s;
{
- char *p;
-
- for (p = s + strlen(s) - 1; p >= s; p--)
- ungetcc(*p);
+ while (*s != '\0')
+ ungetcc_back(*s++);
}
/*
@@ -1122,6 +1186,7 @@ commands(VOID_PARAM)
int action;
char *cbuf;
int newaction;
+ int save_jump_sline;
int save_search_type;
char *extra;
char tbuf[2];
@@ -1423,11 +1488,18 @@ commands(VOID_PARAM)
case A_GOLINE:
/*
* Go to line N, default beginning of file.
+ * If N <= 0, ignore jump_sline in order to avoid
+ * empty lines before the beginning of the file.
*/
+ save_jump_sline = jump_sline;
if (number <= 0)
+ {
number = 1;
+ jump_sline = 0;
+ }
cmd_exec();
jump_back(number);
+ jump_sline = save_jump_sline;
break;
case A_PERCENT:
@@ -1493,7 +1565,7 @@ commands(VOID_PARAM)
case A_VERSION:
/*
- * Print version number, without the "@(#)".
+ * Print version number.
*/
cmd_exec();
dispversion();
@@ -1524,10 +1596,10 @@ commands(VOID_PARAM)
/*
* Define abbreviation for a commonly used sequence below.
*/
-#define DO_SEARCH() \
- if (number <= 0) number = 1; \
- mca_search(); \
- cmd_exec(); \
+#define DO_SEARCH() \
+ if (number <= 0) number = 1; \
+ mca_search(); \
+ cmd_exec(); \
multi_search((char *)NULL, (int) number, 0);
@@ -1604,10 +1676,11 @@ commands(VOID_PARAM)
break;
case A_UNDO_SEARCH:
+ case A_CLR_SEARCH:
/*
* Clear search string highlighting.
*/
- undo_search();
+ undo_search(action == A_CLR_SEARCH);
break;
case A_HELP:
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-18 23:01:02 +0000