summaryrefslogtreecommitdiffhomepage
path: root/editors
diff options
context:
space:
mode:
Diffstat (limited to 'editors')
-rw-r--r--editors/vi.c118
1 files changed, 56 insertions, 62 deletions
diff --git a/editors/vi.c b/editors/vi.c
index af23ae7d2..fe907c841 100644
--- a/editors/vi.c
+++ b/editors/vi.c
@@ -5,19 +5,19 @@
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-/*
- * Things To Do:
- * EXINIT
- * $HOME/.exrc and ./.exrc
- * add magic to search /foo.*bar
- * add :help command
- * :map macros
- * if mark[] values were line numbers rather than pointers
- * it would be easier to change the mark when add/delete lines
- * More intelligence in refresh()
- * ":r !cmd" and "!cmd" to filter text through an external command
- * An "ex" line oriented mode- maybe using "cmdedit"
- */
+//
+//Things To Do:
+// EXINIT
+// $HOME/.exrc and ./.exrc
+// add magic to search /foo.*bar
+// add :help command
+// :map macros
+// if mark[] values were line numbers rather than pointers
+// it would be easier to change the mark when add/delete lines
+// More intelligence in refresh()
+// ":r !cmd" and "!cmd" to filter text through an external command
+// An "ex" line oriented mode- maybe using "cmdedit"
+
//config:config VI
//config: bool "vi (23 kb)"
//config: default y
@@ -178,12 +178,12 @@
//usage: "\n -H List available features"
#include "libbb.h"
-/* Should be after libbb.h: on some systems regex.h needs sys/types.h: */
+// Should be after libbb.h: on some systems regex.h needs sys/types.h:
#if ENABLE_FEATURE_VI_REGEX_SEARCH
# include <regex.h>
#endif
-/* the CRASHME code is unmaintained, and doesn't currently build */
+// the CRASHME code is unmaintained, and doesn't currently build
#define ENABLE_FEATURE_VI_CRASHME 0
@@ -198,7 +198,7 @@
#else
-/* 0x9b is Meta-ESC */
+// 0x9b is Meta-ESC
#if ENABLE_FEATURE_VI_8BIT
# define Isprint(c) ((unsigned char)(c) >= ' ' && (c) != 0x7f && (unsigned char)(c) != 0x9b)
#else
@@ -218,29 +218,27 @@ enum {
MAX_SCR_ROWS = CONFIG_FEATURE_VI_MAX_LEN,
};
-/* VT102 ESC sequences.
- * See "Xterm Control Sequences"
- * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
- */
+// VT102 ESC sequences.
+// See "Xterm Control Sequences"
+// http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
#define ESC "\033"
-/* Inverse/Normal text */
+// Inverse/Normal text
#define ESC_BOLD_TEXT ESC"[7m"
#define ESC_NORM_TEXT ESC"[m"
-/* Bell */
+// Bell
#define ESC_BELL "\007"
-/* Clear-to-end-of-line */
+// Clear-to-end-of-line
#define ESC_CLEAR2EOL ESC"[K"
-/* Clear-to-end-of-screen.
- * (We use default param here.
- * Full sequence is "ESC [ <num> J",
- * <num> is 0/1/2 = "erase below/above/all".)
- */
+// Clear-to-end-of-screen.
+// (We use default param here.
+// Full sequence is "ESC [ <num> J",
+// <num> is 0/1/2 = "erase below/above/all".)
#define ESC_CLEAR2EOS ESC"[J"
-/* Cursor to given coordinate (1,1: top left) */
+// Cursor to given coordinate (1,1: top left)
#define ESC_SET_CURSOR_POS ESC"[%u;%uH"
#define ESC_SET_CURSOR_TOPLEFT ESC"[H"
//UNUSED
-///* Cursor up and down */
+//// Cursor up and down
//#define ESC_CURSOR_UP ESC"[A"
//#define ESC_CURSOR_DOWN "\n"
@@ -267,17 +265,17 @@ enum {
};
-/* vi.c expects chars to be unsigned. */
-/* busybox build system provides that, but it's better */
-/* to audit and fix the source */
+// vi.c expects chars to be unsigned.
+// busybox build system provides that, but it's better
+// to audit and fix the source
struct globals {
- /* many references - keep near the top of globals */
+ // many references - keep near the top of globals
char *text, *end; // pointers to the user data in memory
char *dot; // where all the action takes place
int text_size; // size of the allocated buffer
- /* the rest */
+ // the rest
smallint vi_setops;
#define VI_AUTOINDENT 1
#define VI_SHOWMATCH 2
@@ -286,7 +284,7 @@ struct globals {
#define autoindent (vi_setops & VI_AUTOINDENT)
#define showmatch (vi_setops & VI_SHOWMATCH )
#define ignorecase (vi_setops & VI_IGNORECASE)
-/* indicate error with beep or flash */
+// indicate error with beep or flash
#define err_method (vi_setops & VI_ERR_METHOD)
#if ENABLE_FEATURE_VI_READONLY
@@ -334,14 +332,14 @@ struct globals {
char *last_search_pattern; // last pattern from a '/' or '?' search
#endif
- /* former statics */
+ // former statics
#if ENABLE_FEATURE_VI_YANKMARK
char *edit_file__cur_line;
#endif
int refresh__old_offset;
int format_edit_status__tot;
- /* a few references only */
+ // a few references only
#if ENABLE_FEATURE_VI_YANKMARK
smalluint YDreg;//,Ureg;// default delete register and orig line for "U"
#define Ureg 27
@@ -368,9 +366,10 @@ struct globals {
#if ENABLE_FEATURE_VI_DOT_CMD
char last_modifying_cmd[MAX_INPUT_LEN]; // last modifying cmd for "."
#endif
- char get_input_line__buf[MAX_INPUT_LEN]; /* former static */
+ char get_input_line__buf[MAX_INPUT_LEN]; // former static
char scr_out_buf[MAX_SCR_COLS + MAX_TABSTOP * 2];
+
#if ENABLE_FEATURE_VI_UNDO
// undo_push() operations
#define UNDO_INS 0
@@ -397,7 +396,6 @@ struct globals {
// If undo queuing disabled, don't invoke the missing queue logic
#define ALLOW_UNDO_QUEUED 1
# endif
-
struct undo_object {
struct undo_object *prev; // Linking back avoids list traversal (LIFO)
int start; // Offset where the data should be restored/deleted
@@ -1969,7 +1967,7 @@ static char *char_insert(char *p, char c, int undo) // insert the char c at 'p'
undo_push_insert(p, 1, undo);
#else
modified_count++;
-#endif /* ENABLE_FEATURE_VI_UNDO */
+#endif
p++;
} else if (c == 27) { // Is this an ESC?
cmd_mode = 0;
@@ -1997,7 +1995,7 @@ static char *char_insert(char *p, char c, int undo) // insert the char c at 'p'
undo_push_insert(p, 1, undo);
#else
modified_count++;
-#endif /* ENABLE_FEATURE_VI_UNDO */
+#endif
p += 1 + stupid_insert(p, c); // insert the char
#if ENABLE_FEATURE_VI_SETOPTS
if (showmatch && strchr(")]}", c) != NULL) {
@@ -2777,7 +2775,7 @@ static void colon(char *buf)
bias = string_insert(found, R, ALLOW_UNDO_CHAIN);
found += bias;
ls += bias;
- /*q += bias; - recalculated anyway */
+ //q += bias; - recalculated anyway
// check for "global" :s/foo/bar/g
if (gflag == 'g') {
if ((found + len_R) < end_line(ls)) {
@@ -2873,18 +2871,14 @@ static void colon(char *buf)
#endif /* FEATURE_VI_COLON */
}
-//----- Helper Utility Routines --------------------------------
-
-//----------------------------------------------------------------
//----- Char Routines --------------------------------------------
-/* Chars that are part of a word-
- * 0123456789_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
- * Chars that are Not part of a word (stoppers)
- * !"#$%&'()*+,-./:;<=>?@[\]^`{|}~
- * Chars that are WhiteSpace
- * TAB NEWLINE VT FF RETURN SPACE
- * DO NOT COUNT NEWLINE AS WHITESPACE
- */
+// Chars that are part of a word-
+// 0123456789_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
+// Chars that are Not part of a word (stoppers)
+// !"#$%&'()*+,-./:;<=>?@[\]^`{|}~
+// Chars that are WhiteSpace
+// TAB NEWLINE VT FF RETURN SPACE
+// DO NOT COUNT NEWLINE AS WHITESPACE
static char *new_screen(int ro, int co)
{
@@ -3242,7 +3236,7 @@ static void do_cmd(int c)
dot_skip_over_ws();
} while (--cmdcnt > 0);
break;
- case 21: // ctrl-U scroll up half screen
+ case 21: // ctrl-U scroll up half screen
dot_scroll((rows - 2) / 2, -1);
break;
case 25: // ctrl-Y scroll up one line
@@ -3251,7 +3245,7 @@ static void do_cmd(int c)
case 27: // esc
if (cmd_mode == 0)
indicate_error();
- cmd_mode = 0; // stop insrting
+ cmd_mode = 0; // stop inserting
undo_queue_commit();
end_cmd_q();
last_status_cksum = 0; // force status update
@@ -3948,7 +3942,7 @@ static void do_cmd(int c)
dot--;
}
-/* NB! the CRASHME code is unmaintained, and doesn't currently build */
+// NB! the CRASHME code is unmaintained, and doesn't currently build
#if ENABLE_FEATURE_VI_CRASHME
static int totalcmds = 0;
static int Mp = 85; // Movement command Probability
@@ -4253,7 +4247,7 @@ static void edit_file(char *fn)
crash_dummy(); // generate a random command
} else {
crashme = 0;
- string_insert(text, "\n\n##### Ran out of text to work on. #####\n\n", NO_UNDO); // insert the string
+ string_insert(text, "\n\n##### Ran out of text to work on. #####\n\n", NO_UNDO);
dot = text;
refresh(FALSE);
}
@@ -4268,8 +4262,8 @@ static void edit_file(char *fn)
}
#endif
#if ENABLE_FEATURE_VI_DOT_CMD
- // These are commands that change text[].
- // Remember the input for the "." command
+ // If c is a command that changes text[],
+ // (re)start remembering the input for the "." command.
if (!adding2q
&& ioq_start == NULL
&& cmd_mode == 0 // command mode
@@ -4310,10 +4304,10 @@ int vi_main(int argc, char **argv)
INIT_G();
#if ENABLE_FEATURE_VI_UNDO
- /* undo_stack_tail = NULL; - already is */
+ //undo_stack_tail = NULL; - already is
# if ENABLE_FEATURE_VI_UNDO_QUEUE
undo_queue_state = UNDO_EMPTY;
- /* undo_q = 0; - already is */
+ //undo_q = 0; - already is
# endif
#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 18:53:27 +0000