* tiny vi.c: A small 'vi' clone
* Copyright (C) 2000, 2001 Sterling Huxley <sterling@europa.com>
*
- * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
/*
* 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
+ * 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
- * A true "undo" facility
* An "ex" line oriented mode- maybe using "cmdedit"
*/
+//config:config VI
+//config: bool "vi"
+//config: default y
+//config: help
+//config: 'vi' is a text editor. More specifically, it is the One True
+//config: text editor <grin>. It does, however, have a rather steep
+//config: learning curve. If you are not already comfortable with 'vi'
+//config: you may wish to use something else.
+//config:
+//config:config FEATURE_VI_MAX_LEN
+//config: int "Maximum screen width"
+//config: range 256 16384
+//config: default 4096
+//config: depends on VI
+//config: help
+//config: Contrary to what you may think, this is not eating much.
+//config: Make it smaller than 4k only if you are very limited on memory.
+//config:
+//config:config FEATURE_VI_8BIT
+//config: bool "Allow to display 8-bit chars (otherwise shows dots)"
+//config: default n
+//config: depends on VI
+//config: help
+//config: If your terminal can display characters with high bit set,
+//config: you may want to enable this. Note: vi is not Unicode-capable.
+//config: If your terminal combines several 8-bit bytes into one character
+//config: (as in Unicode mode), this will not work properly.
+//config:
+//config:config FEATURE_VI_COLON
+//config: bool "Enable \":\" colon commands (no \"ex\" mode)"
+//config: default y
+//config: depends on VI
+//config: help
+//config: Enable a limited set of colon commands. This does not
+//config: provide an "ex" mode.
+//config:
+//config:config FEATURE_VI_YANKMARK
+//config: bool "Enable yank/put commands and mark cmds"
+//config: default y
+//config: depends on VI
+//config: help
+//config: This will enable you to use yank and put, as well as mark.
+//config:
+//config:config FEATURE_VI_SEARCH
+//config: bool "Enable search and replace cmds"
+//config: default y
+//config: depends on VI
+//config: help
+//config: Select this if you wish to be able to do search and replace.
+//config:
+//config:config FEATURE_VI_REGEX_SEARCH
+//config: bool "Enable regex in search and replace"
+//config: default n # Uses GNU regex, which may be unavailable. FIXME
+//config: depends on FEATURE_VI_SEARCH
+//config: help
+//config: Use extended regex search.
+//config:
+//config:config FEATURE_VI_USE_SIGNALS
+//config: bool "Catch signals"
+//config: default y
+//config: depends on VI
+//config: help
+//config: Selecting this option will make vi signal aware. This will support
+//config: SIGWINCH to deal with Window Changes, catch ^Z and ^C and alarms.
+//config:
+//config:config FEATURE_VI_DOT_CMD
+//config: bool "Remember previous cmd and \".\" cmd"
+//config: default y
+//config: depends on VI
+//config: help
+//config: Make vi remember the last command and be able to repeat it.
+//config:
+//config:config FEATURE_VI_READONLY
+//config: bool "Enable -R option and \"view\" mode"
+//config: default y
+//config: depends on VI
+//config: help
+//config: Enable the read-only command line option, which allows the user to
+//config: open a file in read-only mode.
+//config:
+//config:config FEATURE_VI_SETOPTS
+//config: bool "Enable settable options, ai ic showmatch"
+//config: default y
+//config: depends on VI
+//config: help
+//config: Enable the editor to set some (ai, ic, showmatch) options.
+//config:
+//config:config FEATURE_VI_SET
+//config: bool "Support :set"
+//config: default y
+//config: depends on VI
+//config:
+//config:config FEATURE_VI_WIN_RESIZE
+//config: bool "Handle window resize"
+//config: default y
+//config: depends on VI
+//config: help
+//config: Behave nicely with terminals that get resized.
+//config:
+//config:config FEATURE_VI_ASK_TERMINAL
+//config: bool "Use 'tell me cursor position' ESC sequence to measure window"
+//config: default y
+//config: depends on VI
+//config: help
+//config: If terminal size can't be retrieved and $LINES/$COLUMNS are not set,
+//config: this option makes vi perform a last-ditch effort to find it:
+//config: position cursor to 999,999 and ask terminal to report real
+//config: cursor position using "ESC [ 6 n" escape sequence, then read stdin.
+//config: This is not clean but helps a lot on serial lines and such.
+//config:
+//config:config FEATURE_VI_UNDO
+//config: bool "Support undo command \"u\""
+//config: default y
+//config: depends on VI
+//config: help
+//config: Support the 'u' command to undo insertion, deletion, and replacement
+//config: of text.
+//config:
+//config:config FEATURE_VI_UNDO_QUEUE
+//config: bool "Enable undo operation queuing"
+//config: default y
+//config: depends on FEATURE_VI_UNDO
+//config: help
+//config: The vi undo functions can use an intermediate queue to greatly lower
+//config: malloc() calls and overhead. When the maximum size of this queue is
+//config: reached, the contents of the queue are committed to the undo stack.
+//config: This increases the size of the undo code and allows some undo
+//config: operations (especially un-typing/backspacing) to be far more useful.
+//config:
+//config:config FEATURE_VI_UNDO_QUEUE_MAX
+//config: int "Maximum undo character queue size"
+//config: default 256
+//config: range 32 65536
+//config: depends on FEATURE_VI_UNDO_QUEUE
+//config: help
+//config: This option sets the number of bytes used at runtime for the queue.
+//config: Smaller values will create more undo objects and reduce the amount
+//config: of typed or backspaced characters that are grouped into one undo
+//config: operation; larger values increase the potential size of each undo
+//config: and will generally malloc() larger objects and less frequently.
+//config: Unless you want more (or less) frequent "undo points" while typing,
+//config: you should probably leave this unchanged.
+
+//applet:IF_VI(APPLET(vi, BB_DIR_BIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_VI) += vi.o
+
+//usage:#define vi_trivial_usage
+//usage: "[OPTIONS] [FILE]..."
+//usage:#define vi_full_usage "\n\n"
+//usage: "Edit FILE\n"
+//usage: IF_FEATURE_VI_COLON(
+//usage: "\n -c CMD Initial command to run ($EXINIT also available)"
+//usage: )
+//usage: IF_FEATURE_VI_READONLY(
+//usage: "\n -R Read-only"
+//usage: )
+//usage: "\n -H List available features"
+
#include "libbb.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 */
#define ENABLE_FEATURE_VI_CRASHME 0
#if ENABLE_LOCALE_SUPPORT
#if ENABLE_FEATURE_VI_8BIT
-#define Isprint(c) isprint(c)
+//FIXME: this does not work properly for Unicode anyway
+# define Isprint(c) (isprint)(c)
#else
-#define Isprint(c) (isprint(c) && (unsigned char)(c) < 0x7f)
+# define Isprint(c) isprint_asciionly(c)
#endif
#else
/* 0x9b is Meta-ESC */
#if ENABLE_FEATURE_VI_8BIT
-#define Isprint(c) ((unsigned char)(c) >= ' ' && (c) != 0x7f && (unsigned char)(c) != 0x9b)
+# define Isprint(c) ((unsigned char)(c) >= ' ' && (c) != 0x7f && (unsigned char)(c) != 0x9b)
#else
-#define Isprint(c) ((unsigned char)(c) >= ' ' && (unsigned char)(c) < 0x7f)
+# define Isprint(c) ((unsigned char)(c) >= ' ' && (unsigned char)(c) < 0x7f)
#endif
#endif
MAX_SCR_ROWS = CONFIG_FEATURE_VI_MAX_LEN,
};
-/* vt102 typical ESC sequence */
-/* terminal standout start/normal ESC sequence */
-static const char SOs[] ALIGN1 = "\033[7m";
-static const char SOn[] ALIGN1 = "\033[0m";
-/* terminal bell sequence */
-static const char bell[] ALIGN1 = "\007";
-/* Clear-end-of-line and Clear-end-of-screen ESC sequence */
-static const char Ceol[] ALIGN1 = "\033[0K";
-static const char Ceos[] ALIGN1 = "\033[0J";
-/* Cursor motion arbitrary destination ESC sequence */
-static const char CMrc[] ALIGN1 = "\033[%d;%dH";
-/* Cursor motion up and down ESC sequence */
-static const char CMup[] ALIGN1 = "\033[A";
-static const char CMdown[] ALIGN1 = "\n";
+/* VT102 ESC sequences.
+ * See "Xterm Control Sequences"
+ * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
+ */
+/* Inverse/Normal text */
+#define ESC_BOLD_TEXT "\033[7m"
+#define ESC_NORM_TEXT "\033[0m"
+/* Bell */
+#define ESC_BELL "\007"
+/* Clear-to-end-of-line */
+#define ESC_CLEAR2EOL "\033[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".)
+ */
+#define ESC_CLEAR2EOS "\033[J"
+/* Cursor to given coordinate (1,1: top left) */
+#define ESC_SET_CURSOR_POS "\033[%u;%uH"
+//UNUSED
+///* Cursor up and down */
+//#define ESC_CURSOR_UP "\033[A"
+//#define ESC_CURSOR_DOWN "\n"
#if ENABLE_FEATURE_VI_DOT_CMD || ENABLE_FEATURE_VI_YANKMARK
// cmds modifying text[]
// vda: removed "aAiIs" as they switch us into insert mode
// and remembering input for replay after them makes no sense
-static const char modifying_cmds[] = "cCdDJoOpPrRxX<>~";
+static const char modifying_cmds[] ALIGN1 = "cCdDJoOpPrRxX<>~";
#endif
enum {
smallint editing; // >0 while we are editing a file
// [code audit says "can be 0, 1 or 2 only"]
smallint cmd_mode; // 0=command 1=insert 2=replace
- int file_modified; // buffer contents changed (counter, not flag!)
- int last_file_modified; // = -1;
- int fn_start; // index of first cmd line file name
+ int modified_count; // buffer contents changed if !0
+ int last_modified_count; // = -1;
int save_argc; // how many file names on cmd line
int cmdcnt; // repetition count
unsigned rows, columns; // the terminal screen is this size
+#if ENABLE_FEATURE_VI_ASK_TERMINAL
+ int get_rowcol_error;
+#endif
int crow, ccol; // cursor is on Crow x Ccol
int offset; // chars scrolled off the screen to the left
int have_status_msg; // is default edit status needed?
char erase_char; // the users erase character
char last_input_char; // last char read from user
- smalluint chars_to_parse;
#if ENABLE_FEATURE_VI_DOT_CMD
smallint adding2q; // are we currently adding user input to q
int lmc_len; // length of last_modifying_cmd
char *ioq, *ioq_start; // pointer to string for get_one_char to "read"
#endif
-#if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
- int last_row; // where the cursor was last moved to
-#endif
#if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
int my_pid;
#endif
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
+#define UNDO_DEL 1
+#define UNDO_INS_CHAIN 2
+#define UNDO_DEL_CHAIN 3
+// UNDO_*_QUEUED must be equal to UNDO_xxx ORed with UNDO_QUEUED_FLAG
+#define UNDO_QUEUED_FLAG 4
+#define UNDO_INS_QUEUED 4
+#define UNDO_DEL_QUEUED 5
+#define UNDO_USE_SPOS 32
+#define UNDO_EMPTY 64
+// Pass-through flags for functions that can be undone
+#define NO_UNDO 0
+#define ALLOW_UNDO 1
+#define ALLOW_UNDO_CHAIN 2
+# if ENABLE_FEATURE_VI_UNDO_QUEUE
+#define ALLOW_UNDO_QUEUED 3
+ char undo_queue_state;
+ int undo_q;
+ char *undo_queue_spos; // Start position of queued operation
+ char undo_queue[CONFIG_FEATURE_VI_UNDO_QUEUE_MAX];
+# else
+// 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
+ int length; // total data size
+ uint8_t u_type; // 0=deleted, 1=inserted, 2=swapped
+ char undo_text[1]; // text that was deleted (if deletion)
+ } *undo_stack_tail;
+#endif /* ENABLE_FEATURE_VI_UNDO */
};
#define G (*ptr_to_globals)
#define text (G.text )
#define vi_setops (G.vi_setops )
#define editing (G.editing )
#define cmd_mode (G.cmd_mode )
-#define file_modified (G.file_modified )
-#define last_file_modified (G.last_file_modified )
-#define fn_start (G.fn_start )
+#define modified_count (G.modified_count )
+#define last_modified_count (G.last_modified_count)
#define save_argc (G.save_argc )
#define cmdcnt (G.cmdcnt )
#define rows (G.rows )
#define last_forward_char (G.last_forward_char )
#define erase_char (G.erase_char )
#define last_input_char (G.last_input_char )
-#define chars_to_parse (G.chars_to_parse )
#if ENABLE_FEATURE_VI_READONLY
#define readonly_mode (G.readonly_mode )
#else
#define lmc_len (G.lmc_len )
#define ioq (G.ioq )
#define ioq_start (G.ioq_start )
-#define last_row (G.last_row )
#define my_pid (G.my_pid )
#define last_search_pattern (G.last_search_pattern)
#define last_modifying_cmd (G.last_modifying_cmd )
#define get_input_line__buf (G.get_input_line__buf)
+#if ENABLE_FEATURE_VI_UNDO
+#define undo_stack_tail (G.undo_stack_tail )
+# if ENABLE_FEATURE_VI_UNDO_QUEUE
+#define undo_queue_state (G.undo_queue_state)
+#define undo_q (G.undo_q )
+#define undo_queue (G.undo_queue )
+#define undo_queue_spos (G.undo_queue_spos )
+# endif
+#endif
+
#define INIT_G() do { \
SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
- last_file_modified = -1; \
- last_search_pattern = xzalloc(2); /* "" but has space for 2 chars */ \
+ last_modified_count = -1; \
+ /* "" but has space for 2 chars: */ \
+ IF_FEATURE_VI_SEARCH(last_search_pattern = xzalloc(2);) \
} while (0)
-static int init_text_buffer(char *); // init from file or create new
static void edit_file(char *); // edit one file
static void do_cmd(int); // execute a command
static int next_tabstop(int);
static char *next_line(char *); // return pointer to next line B-o-l
static char *end_screen(void); // get pointer to last char on screen
static int count_lines(char *, char *); // count line from start to stop
-static char *find_line(int); // find begining of line #li
+static char *find_line(int); // find beginning of line #li
static char *move_to_col(char *, int); // move "p" to column l
static void dot_left(void); // move dot left- dont leave line
static void dot_right(void); // move dot right- dont leave line
static void dot_prev(void); // move dot to prev line B-o-l
static void dot_scroll(int, int); // move the screen up or down
static void dot_skip_over_ws(void); // move dot pat WS
-static void dot_delete(void); // delete the char at 'dot'
static char *bound_dot(char *); // make sure text[0] <= P < "end"
static char *new_screen(int, int); // malloc virtual screen memory
-static char *char_insert(char *, char); // insert the char c at 'p'
-static char *stupid_insert(char *, char); // stupidly insert the char c at 'p'
+#if !ENABLE_FEATURE_VI_UNDO
+#define char_insert(a,b,c) char_insert(a,b)
+#endif
+static char *char_insert(char *, char, int); // insert the char c at 'p'
+// might reallocate text[]! use p += stupid_insert(p, ...),
+// and be careful to not use pointers into potentially freed text[]!
+static uintptr_t stupid_insert(char *, char); // stupidly insert the char c at 'p'
static int find_range(char **, char **, char); // return pointers for an object
static int st_test(char *, int, int, char *); // helper for skip_thing()
static char *skip_thing(char *, int, int, int); // skip some object
static char *find_pair(char *, char); // find matching pair () [] {}
-static char *text_hole_delete(char *, char *); // at "p", delete a 'size' byte hole
-static char *text_hole_make(char *, int); // at "p", make a 'size' byte hole
-static char *yank_delete(char *, char *, int, int); // yank text[] into register then delete
+#if !ENABLE_FEATURE_VI_UNDO
+#define text_hole_delete(a,b,c) text_hole_delete(a,b)
+#endif
+static char *text_hole_delete(char *, char *, int); // at "p", delete a 'size' byte hole
+// might reallocate text[]! use p += text_hole_make(p, ...),
+// and be careful to not use pointers into potentially freed text[]!
+static uintptr_t text_hole_make(char *, int); // at "p", make a 'size' byte hole
+#if !ENABLE_FEATURE_VI_UNDO
+#define yank_delete(a,b,c,d,e) yank_delete(a,b,c,d)
+#endif
+static char *yank_delete(char *, char *, int, int, int); // yank text[] into register then delete
static void show_help(void); // display some help info
static void rawmode(void); // set "raw" mode on tty
static void cookmode(void); // return to "cooked" mode on tty
static int mysleep(int);
static int readit(void); // read (maybe cursor) key from stdin
static int get_one_char(void); // read 1 char from stdin
-static int file_size(const char *); // what is the byte size of "fn"
-#if ENABLE_FEATURE_VI_READONLY
+// file_insert might reallocate text[]!
static int file_insert(const char *, char *, int);
-#else
-static int file_insert(const char *, char *);
-#endif
static int file_write(char *, char *, char *);
-#if !ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
-#define place_cursor(a, b, optimize) place_cursor(a, b)
-#endif
-static void place_cursor(int, int, int);
+static void place_cursor(int, int);
static void screen_erase(void);
static void clear_to_eol(void);
static void clear_to_eos(void);
static void show_status_line(void); // put a message on the bottom line
static void status_line(const char *, ...); // print to status buf
static void status_line_bold(const char *, ...);
+static void status_line_bold_errno(const char *fn);
static void not_implemented(const char *); // display "Not implemented" message
static int format_edit_status(void); // format file status on status line
static void redraw(int); // force a full screen refresh
static char* format_line(char* /*, int*/);
static void refresh(int); // update the terminal from screen[]
-static void Indicate_Error(void); // use flash or beep to indicate error
-#define indicate_error(c) Indicate_Error()
+static void indicate_error(void); // use flash or beep to indicate error
static void Hit_Return(void);
#if ENABLE_FEATURE_VI_SEARCH
static char *char_search(char *, const char *, int, int); // search for pattern starting at p
-static int mycmp(const char *, const char *, int); // string cmp based in "ignorecase"
#endif
#if ENABLE_FEATURE_VI_COLON
static char *get_one_address(char *, int *); // get colon addr, if present
static char *get_address(char *, int *, int *); // get two colon addrs, if present
-static void colon(char *); // execute the "colon" mode cmds
#endif
+static void colon(char *); // execute the "colon" mode cmds
#if ENABLE_FEATURE_VI_USE_SIGNALS
static void winch_sig(int); // catch window size changes
static void suspend_sig(int); // catch ctrl-Z
static void showmatching(char *); // show the matching pair () [] {}
#endif
#if ENABLE_FEATURE_VI_YANKMARK || (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) || ENABLE_FEATURE_VI_CRASHME
-static char *string_insert(char *, char *); // insert the string at 'p'
+// might reallocate text[]! use p += string_insert(p, ...),
+// and be careful to not use pointers into potentially freed text[]!
+# if !ENABLE_FEATURE_VI_UNDO
+#define string_insert(a,b,c) string_insert(a,b)
+# endif
+static uintptr_t string_insert(char *, const char *, int); // insert the string at 'p'
#endif
#if ENABLE_FEATURE_VI_YANKMARK
static char *text_yank(char *, char *, int); // save copy of "p" into a register
static char what_reg(void); // what is letter of current YDreg
static void check_context(char); // remember context for '' command
#endif
+#if ENABLE_FEATURE_VI_UNDO
+static void flush_undo_data(void);
+static void undo_push(char *, unsigned int, unsigned char); // Push an operation on the undo stack
+static void undo_pop(void); // Undo the last operation
+# if ENABLE_FEATURE_VI_UNDO_QUEUE
+static void undo_queue_commit(void); // Flush any queued objects to the undo stack
+# else
+# define undo_queue_commit() ((void)0)
+# endif
+#else
+#define flush_undo_data() ((void)0)
+#define undo_queue_commit() ((void)0)
+#endif
+
#if ENABLE_FEATURE_VI_CRASHME
static void crash_dummy();
static void crash_test();
static int crashme = 0;
#endif
-
static void write1(const char *out)
{
fputs(out, stdout);
INIT_G();
+#if ENABLE_FEATURE_VI_UNDO
+ /* undo_stack_tail = NULL; - already is */
+#if ENABLE_FEATURE_VI_UNDO_QUEUE
+ undo_queue_state = UNDO_EMPTY;
+ /* undo_q = 0; - already is */
+#endif
+#endif
+
#if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
my_pid = getpid();
#endif
}
#endif
- vi_setops = VI_AUTOINDENT | VI_SHOWMATCH | VI_IGNORECASE;
+ // autoindent is not default in vim 7.3
+ vi_setops = /*VI_AUTOINDENT |*/ VI_SHOWMATCH | VI_IGNORECASE;
// 1- process $HOME/.exrc file (not inplemented yet)
// 2- process EXINIT variable from environment
// 3- process command line args
initial_cmds[0] = xstrndup(p, MAX_INPUT_LEN);
}
#endif
- while ((c = getopt(argc, argv, "hCRH" USE_FEATURE_VI_COLON("c:"))) != -1) {
+ while ((c = getopt(argc, argv, "hCRH" IF_FEATURE_VI_COLON("c:"))) != -1) {
switch (c) {
#if ENABLE_FEATURE_VI_CRASHME
case 'C':
#if ENABLE_FEATURE_VI_COLON
case 'c': // cmd line vi command
if (*optarg)
- initial_cmds[initial_cmds[0] != 0] = xstrndup(optarg, MAX_INPUT_LEN);
+ initial_cmds[initial_cmds[0] != NULL] = xstrndup(optarg, MAX_INPUT_LEN);
break;
#endif
case 'H':
}
// The argv array can be used by the ":next" and ":rewind" commands
- // save optind.
- fn_start = optind; // remember first file name for :next and :rew
- save_argc = argc;
+ argv += optind;
+ argc -= optind;
//----- This is the main file handling loop --------------
- if (optind >= argc) {
- edit_file(0);
- } else {
- for (; optind < argc; optind++) {
- edit_file(argv[optind]);
- }
+ save_argc = argc;
+ optind = 0;
+ // "Save cursor, use alternate screen buffer, clear screen"
+ write1("\033[?1049h");
+ while (1) {
+ edit_file(argv[optind]); /* param might be NULL */
+ if (++optind >= argc)
+ break;
}
+ // "Use normal screen buffer, restore cursor"
+ write1("\033[?1049l");
//-----------------------------------------------------------
return 0;
static int init_text_buffer(char *fn)
{
int rc;
- int size = file_size(fn); // file size. -1 means does not exist.
+
+ flush_undo_data();
+ modified_count = 0;
+ last_modified_count = -1;
+#if ENABLE_FEATURE_VI_YANKMARK
+ /* init the marks */
+ memset(mark, 0, sizeof(mark));
+#endif
/* allocate/reallocate text buffer */
free(text);
- text_size = size + 10240;
+ text_size = 10240;
screenbegin = dot = end = text = xzalloc(text_size);
if (fn != current_filename) {
free(current_filename);
current_filename = xstrdup(fn);
}
- if (size < 0) {
- // file dont exist. Start empty buf with dummy line
- char_insert(text, '\n');
- rc = 0;
- } else {
- rc = file_insert(fn, text
- USE_FEATURE_VI_READONLY(, 1));
+ rc = file_insert(fn, text, 1);
+ if (rc < 0) {
+ // file doesnt exist. Start empty buf with dummy line
+ char_insert(text, '\n', NO_UNDO);
}
- file_modified = 0;
- last_file_modified = -1;
-#if ENABLE_FEATURE_VI_YANKMARK
- /* init the marks. */
- memset(mark, 0, sizeof(mark));
-#endif
return rc;
}
+#if ENABLE_FEATURE_VI_WIN_RESIZE
+static int query_screen_dimensions(void)
+{
+ int err = get_terminal_width_height(STDIN_FILENO, &columns, &rows);
+ if (rows > MAX_SCR_ROWS)
+ rows = MAX_SCR_ROWS;
+ if (columns > MAX_SCR_COLS)
+ columns = MAX_SCR_COLS;
+ return err;
+}
+#else
+# define query_screen_dimensions() (0)
+#endif
+
static void edit_file(char *fn)
{
#if ENABLE_FEATURE_VI_YANKMARK
#define cur_line edit_file__cur_line
#endif
int c;
- int size;
#if ENABLE_FEATURE_VI_USE_SIGNALS
int sig;
#endif
rawmode();
rows = 24;
columns = 80;
- size = 0;
- if (ENABLE_FEATURE_VI_WIN_RESIZE) {
- get_terminal_width_height(0, &columns, &rows);
- if (rows > MAX_SCR_ROWS) rows = MAX_SCR_ROWS;
- if (columns > MAX_SCR_COLS) columns = MAX_SCR_COLS;
+ IF_FEATURE_VI_ASK_TERMINAL(G.get_rowcol_error =) query_screen_dimensions();
+#if ENABLE_FEATURE_VI_ASK_TERMINAL
+ if (G.get_rowcol_error /* TODO? && no input on stdin */) {
+ uint64_t k;
+ write1("\033[999;999H" "\033[6n");
+ fflush_all();
+ k = read_key(STDIN_FILENO, readbuffer, /*timeout_ms:*/ 100);
+ if ((int32_t)k == KEYCODE_CURSOR_POS) {
+ uint32_t rc = (k >> 32);
+ columns = (rc & 0x7fff);
+ if (columns > MAX_SCR_COLS)
+ columns = MAX_SCR_COLS;
+ rows = ((rc >> 16) & 0x7fff);
+ if (rows > MAX_SCR_ROWS)
+ rows = MAX_SCR_ROWS;
+ }
}
+#endif
new_screen(rows, columns); // get memory for virtual screen
init_text_buffer(fn);
ccol = 0;
#if ENABLE_FEATURE_VI_USE_SIGNALS
- catch_sig(0);
+ signal(SIGINT, catch_sig);
signal(SIGWINCH, winch_sig);
signal(SIGTSTP, suspend_sig);
sig = sigsetjmp(restart, 1);
char *p, *q;
int n = 0;
- while ((p = initial_cmds[n])) {
+ while ((p = initial_cmds[n]) != NULL) {
do {
q = p;
p = strchr(q, '\n');
crash_dummy(); // generate a random command
} else {
crashme = 0;
- dot = string_insert(text, "\n\n##### Ran out of text to work on. #####\n\n"); // insert the string
+ string_insert(text, "\n\n##### Ran out of text to work on. #####\n\n", NO_UNDO); // insert the string
+ dot = text;
refresh(FALSE);
}
}
// poll to see if there is input already waiting. if we are
// not able to display output fast enough to keep up, skip
// the display update until we catch up with input.
- if (!chars_to_parse && mysleep(0) == 0) {
+ if (!readbuffer[0] && mysleep(0) == 0) {
// no input pending - so update output
refresh(FALSE);
show_status_line();
{
int st;
char *q;
- USE_FEATURE_VI_YANKMARK(char c;)
- USE_FEATURE_VI_SEARCH(char *pat;)
+ IF_FEATURE_VI_YANKMARK(char c;)
+ IF_FEATURE_VI_SEARCH(char *pat;)
*addr = -1; // assume no addr
if (*p == '.') { // the current line
c = c - 'a';
q = mark[(unsigned char) c];
if (q != NULL) { // is mark valid
- *addr = count_lines(text, q); // count lines
+ *addr = count_lines(text, q);
}
}
}
sscanf(p, "%d%n", addr, &st);
p += st;
} else {
- // unrecognised address - assume -1
+ // unrecognized address - assume -1
*addr = -1;
}
return p;
const char *a = args + flg_no;
int l = strlen(opname) - 1; /* opname have + ' ' */
+ // maybe strncmp? we had tons of erroneous strncasecmp's...
if (strncasecmp(a, opname, l) == 0
|| strncasecmp(a, short_opname, 2) == 0
) {
}
#endif
+#endif /* FEATURE_VI_COLON */
+
// buf must be no longer than MAX_INPUT_LEN!
static void colon(char *buf)
{
+#if !ENABLE_FEATURE_VI_COLON
+ /* Simple ":cmd" handler with minimal set of commands */
+ char *p = buf;
+ int cnt;
+
+ if (*p == ':')
+ p++;
+ cnt = strlen(p);
+ if (cnt == 0)
+ return;
+ if (strncmp(p, "quit", cnt) == 0
+ || strncmp(p, "q!", cnt) == 0
+ ) {
+ if (modified_count && p[1] != '!') {
+ status_line_bold("No write since last change (:%s! overrides)", p);
+ } else {
+ editing = 0;
+ }
+ return;
+ }
+ if (strncmp(p, "write", cnt) == 0
+ || strncmp(p, "wq", cnt) == 0
+ || strncmp(p, "wn", cnt) == 0
+ || (p[0] == 'x' && !p[1])
+ ) {
+ cnt = file_write(current_filename, text, end - 1);
+ if (cnt < 0) {
+ if (cnt == -1)
+ status_line_bold("Write error: %s", strerror(errno));
+ } else {
+ modified_count = 0;
+ last_modified_count = -1;
+ status_line("'%s' %dL, %dC",
+ current_filename,
+ count_lines(text, end - 1), cnt
+ );
+ if (p[0] == 'x' || p[1] == 'q' || p[1] == 'n'
+ || p[0] == 'X' || p[1] == 'Q' || p[1] == 'N'
+ ) {
+ editing = 0;
+ }
+ }
+ return;
+ }
+ if (strncmp(p, "file", cnt) == 0) {
+ last_status_cksum = 0; // force status update
+ return;
+ }
+ if (sscanf(p, "%d", &cnt) > 0) {
+ dot = find_line(cnt);
+ dot_skip_over_ws();
+ return;
+ }
+ not_implemented(p);
+#else
+
char c, *orig_buf, *buf1, *q, *r;
char *fn, cmd[MAX_INPUT_LEN], args[MAX_INPUT_LEN];
- int i, l, li, ch, b, e;
- int useforce, forced = FALSE;
+ int i, l, li, b, e;
+ int useforce;
// :3154 // if (-e line 3154) goto it else stay put
// :4,33w! foo // write a portion of buffer to file "foo"
//
if (!buf[0])
- goto vc1;
+ goto ret;
if (*buf == ':')
buf++; // move past the ':'
- li = ch = i = 0;
+ li = i = 0;
b = e = -1;
q = text; // assume 1,$ for the range
r = end - 1;
}
}
#if ENABLE_FEATURE_ALLOW_EXEC
- else if (strncmp(cmd, "!", 1) == 0) { // run a cmd
+ else if (cmd[0] == '!') { // run a cmd
int retcode;
// :!ls run the <cmd>
go_bottom_and_clear_to_eol();
Hit_Return(); // let user see results
}
#endif
- else if (strncmp(cmd, "=", i) == 0) { // where is the address
+ else if (cmd[0] == '=' && !cmd[1]) { // where is the address
if (b < 0) { // no addr given- use defaults
b = e = count_lines(text, dot);
}
status_line("%d", b);
- } else if (strncasecmp(cmd, "delete", i) == 0) { // delete lines
+ } else if (strncmp(cmd, "delete", i) == 0) { // delete lines
if (b < 0) { // no addr given- use defaults
q = begin_line(dot); // assume .,. for the range
r = end_line(dot);
}
- dot = yank_delete(q, r, 1, YANKDEL); // save, then delete lines
+ dot = yank_delete(q, r, 1, YANKDEL, ALLOW_UNDO); // save, then delete lines
dot_skip_over_ws();
- } else if (strncasecmp(cmd, "edit", i) == 0) { // Edit a file
+ } else if (strncmp(cmd, "edit", i) == 0) { // Edit a file
+ int size;
+
// don't edit, if the current file has been modified
- if (file_modified && !useforce) {
- status_line_bold("No write since last change (:edit! overrides)");
- goto vc1;
+ if (modified_count && !useforce) {
+ status_line_bold("No write since last change (:%s! overrides)", cmd);
+ goto ret;
}
if (args[0]) {
// the user supplied a file name
} else {
// no user file name, no current name- punt
status_line_bold("No current filename");
- goto vc1;
+ goto ret;
}
- if (init_text_buffer(fn) < 0)
- goto vc1;
+ size = init_text_buffer(fn);
#if ENABLE_FEATURE_VI_YANKMARK
- if (Ureg >= 0 && Ureg < 28 && reg[Ureg] != 0) {
+ if (Ureg >= 0 && Ureg < 28) {
free(reg[Ureg]); // free orig line reg- for 'U'
- reg[Ureg]= 0;
+ reg[Ureg] = NULL;
}
- if (YDreg >= 0 && YDreg < 28 && reg[YDreg] != 0) {
+ if (YDreg >= 0 && YDreg < 28) {
free(reg[YDreg]); // free default yank/delete register
- reg[YDreg]= 0;
+ reg[YDreg] = NULL;
}
#endif
// how many lines in text[]?
li = count_lines(text, end - 1);
- status_line("\"%s\"%s"
- USE_FEATURE_VI_READONLY("%s")
- " %dL, %dC", current_filename,
- (file_size(fn) < 0 ? " [New file]" : ""),
- USE_FEATURE_VI_READONLY(
+ status_line("'%s'%s"
+ IF_FEATURE_VI_READONLY("%s")
+ " %dL, %dC",
+ current_filename,
+ (size < 0 ? " [New file]" : ""),
+ IF_FEATURE_VI_READONLY(
((readonly_mode) ? " [Readonly]" : ""),
)
- li, ch);
- } else if (strncasecmp(cmd, "file", i) == 0) { // what File is this
+ li, (int)(end - text)
+ );
+ } else if (strncmp(cmd, "file", i) == 0) { // what File is this
if (b != -1 || e != -1) {
- not_implemented("No address allowed on this command");
- goto vc1;
+ status_line_bold("No address allowed on this command");
+ goto ret;
}
if (args[0]) {
// user wants a new filename
// user wants file status info
last_status_cksum = 0; // force status update
}
- } else if (strncasecmp(cmd, "features", i) == 0) { // what features are available
+ } else if (strncmp(cmd, "features", i) == 0) { // what features are available
// print out values of all features
go_bottom_and_clear_to_eol();
cookmode();
show_help();
rawmode();
Hit_Return();
- } else if (strncasecmp(cmd, "list", i) == 0) { // literal print line
+ } else if (strncmp(cmd, "list", i) == 0) { // literal print line
if (b < 0) { // no addr given- use defaults
q = begin_line(dot); // assume .,. for the range
r = end_line(dot);
if (c_is_no_print)
standout_end();
}
-#if ENABLE_FEATURE_VI_SET
- vc2:
-#endif
Hit_Return();
- } else if (strncasecmp(cmd, "quit", i) == 0 // Quit
- || strncasecmp(cmd, "next", i) == 0 // edit next file
+ } else if (strncmp(cmd, "quit", i) == 0 // quit
+ || strncmp(cmd, "next", i) == 0 // edit next file
+ || strncmp(cmd, "prev", i) == 0 // edit previous file
) {
+ int n;
if (useforce) {
- // force end of argv list
if (*cmd == 'q') {
+ // force end of argv list
optind = save_argc;
}
editing = 0;
- goto vc1;
+ goto ret;
}
// don't exit if the file been modified
- if (file_modified) {
- status_line_bold("No write since last change (:%s! overrides)",
- (*cmd == 'q' ? "quit" : "next"));
- goto vc1;
+ if (modified_count) {
+ status_line_bold("No write since last change (:%s! overrides)", cmd);
+ goto ret;
}
// are there other file to edit
- if (*cmd == 'q' && optind < save_argc - 1) {
- status_line_bold("%d more file to edit", (save_argc - optind - 1));
- goto vc1;
+ n = save_argc - optind - 1;
+ if (*cmd == 'q' && n > 0) {
+ status_line_bold("%d more file(s) to edit", n);
+ goto ret;
}
- if (*cmd == 'n' && optind >= save_argc - 1) {
+ if (*cmd == 'n' && n <= 0) {
status_line_bold("No more files to edit");
- goto vc1;
+ goto ret;
+ }
+ if (*cmd == 'p') {
+ // are there previous files to edit
+ if (optind < 1) {
+ status_line_bold("No previous files to edit");
+ goto ret;
+ }
+ optind -= 2;
}
editing = 0;
- } else if (strncasecmp(cmd, "read", i) == 0) { // read file into text[]
+ } else if (strncmp(cmd, "read", i) == 0) { // read file into text[]
+ int size;
+
fn = args;
if (!fn[0]) {
status_line_bold("No filename given");
- goto vc1;
+ goto ret;
}
if (b < 0) { // no addr given- use defaults
q = begin_line(dot); // assume "dot"
}
// read after current line- unless user said ":0r foo"
- if (b != 0)
+ if (b != 0) {
q = next_line(q);
- ch = file_insert(fn, q USE_FEATURE_VI_READONLY(, 0));
- if (ch < 0)
- goto vc1; // nothing was inserted
+ // read after last line
+ if (q == end-1)
+ ++q;
+ }
+ { // dance around potentially-reallocated text[]
+ uintptr_t ofs = q - text;
+ size = file_insert(fn, q, 0);
+ q = text + ofs;
+ }
+ if (size < 0)
+ goto ret; // nothing was inserted
// how many lines in text[]?
- li = count_lines(q, q + ch - 1);
- status_line("\"%s\""
- USE_FEATURE_VI_READONLY("%s")
- " %dL, %dC", fn,
- USE_FEATURE_VI_READONLY((readonly_mode ? " [Readonly]" : ""),)
- li, ch);
- if (ch > 0) {
+ li = count_lines(q, q + size - 1);
+ status_line("'%s'"
+ IF_FEATURE_VI_READONLY("%s")
+ " %dL, %dC",
+ fn,
+ IF_FEATURE_VI_READONLY((readonly_mode ? " [Readonly]" : ""),)
+ li, size
+ );
+ if (size > 0) {
// if the insert is before "dot" then we need to update
if (q <= dot)
- dot += ch;
- file_modified++;
+ dot += size;
}
- } else if (strncasecmp(cmd, "rewind", i) == 0) { // rewind cmd line args
- if (file_modified && !useforce) {
- status_line_bold("No write since last change (:rewind! overrides)");
+ } else if (strncmp(cmd, "rewind", i) == 0) { // rewind cmd line args
+ if (modified_count && !useforce) {
+ status_line_bold("No write since last change (:%s! overrides)", cmd);
} else {
// reset the filenames to edit
- optind = fn_start - 1;
+ optind = -1; /* start from 0th file */
editing = 0;
}
#if ENABLE_FEATURE_VI_SET
- } else if (strncasecmp(cmd, "set", i) == 0) { // set or clear features
+ } else if (strncmp(cmd, "set", i) == 0) { // set or clear features
#if ENABLE_FEATURE_VI_SETOPTS
char *argp;
#endif
i = 0; // offset into args
- // only blank is regarded as args delmiter. What about tab '\t' ?
+ // only blank is regarded as args delimiter. What about tab '\t'?
if (!args[0] || strcasecmp(args, "all") == 0) {
// print out values of all options
- go_bottom_and_clear_to_eol();
- printf("----------------------------------------\r\n");
#if ENABLE_FEATURE_VI_SETOPTS
- if (!autoindent)
- printf("no");
- printf("autoindent ");
- if (!err_method)
- printf("no");
- printf("flash ");
- if (!ignorecase)
- printf("no");
- printf("ignorecase ");
- if (!showmatch)
- printf("no");
- printf("showmatch ");
- printf("tabstop=%d ", tabstop);
-#endif
- printf("\r\n");
- goto vc2;
+ status_line_bold(
+ "%sautoindent "
+ "%sflash "
+ "%signorecase "
+ "%sshowmatch "
+ "tabstop=%u",
+ autoindent ? "" : "no",
+ err_method ? "" : "no",
+ ignorecase ? "" : "no",
+ showmatch ? "" : "no",
+ tabstop
+ );
+#endif
+ goto ret;
}
#if ENABLE_FEATURE_VI_SETOPTS
argp = args;
while (*argp) {
- if (strncasecmp(argp, "no", 2) == 0)
+ if (strncmp(argp, "no", 2) == 0)
i = 2; // ":set noautoindent"
setops(argp, "autoindent ", i, "ai", VI_AUTOINDENT);
- setops(argp, "flash ", i, "fl", VI_ERR_METHOD);
+ setops(argp, "flash " , i, "fl", VI_ERR_METHOD);
setops(argp, "ignorecase ", i, "ic", VI_IGNORECASE);
- setops(argp, "showmatch ", i, "ic", VI_SHOWMATCH);
- /* tabstopXXXX */
- if (strncasecmp(argp + i, "tabstop=%d ", 7) == 0) {
- sscanf(strchr(argp + i, '='), "tabstop=%d" + 7, &ch);
- if (ch > 0 && ch <= MAX_TABSTOP)
- tabstop = ch;
+ setops(argp, "showmatch " , i, "sm", VI_SHOWMATCH );
+ if (strncmp(argp + i, "tabstop=", 8) == 0) {
+ int t = 0;
+ sscanf(argp + i+8, "%u", &t);
+ if (t > 0 && t <= MAX_TABSTOP)
+ tabstop = t;
}
- while (*argp && *argp != ' ')
- argp++; // skip to arg delimiter (i.e. blank)
- while (*argp && *argp == ' ')
- argp++; // skip all delimiting blanks
+ argp = skip_non_whitespace(argp);
+ argp = skip_whitespace(argp);
}
#endif /* FEATURE_VI_SETOPTS */
#endif /* FEATURE_VI_SET */
#if ENABLE_FEATURE_VI_SEARCH
- } else if (strncasecmp(cmd, "s", 1) == 0) { // substitute a pattern with a replacement pattern
- char *ls, *F, *R;
- int gflag;
+ } else if (cmd[0] == 's') { // substitute a pattern with a replacement pattern
+ char *F, *R, *flags;
+ size_t len_F, len_R;
+ int gflag; // global replace flag
+#if ENABLE_FEATURE_VI_UNDO
+ int dont_chain_first_item = ALLOW_UNDO;
+#endif
// F points to the "find" pattern
// R points to the "replace" pattern
- // replace the cmd line delimiters "/" with NULLs
- gflag = 0; // global replace flag
+ // replace the cmd line delimiters "/" with NULs
c = orig_buf[1]; // what is the delimiter
F = orig_buf + 2; // start of "find"
R = strchr(F, c); // middle delimiter
- if (!R) goto colon_s_fail;
+ if (!R)
+ goto colon_s_fail;
+ len_F = R - F;
*R++ = '\0'; // terminate "find"
- buf1 = strchr(R, c);
- if (!buf1) goto colon_s_fail;
- *buf1++ = '\0'; // terminate "replace"
- if (*buf1 == 'g') { // :s/foo/bar/g
- buf1++;
- gflag++; // turn on gflag
- }
+ flags = strchr(R, c);
+ if (!flags)
+ goto colon_s_fail;
+ len_R = flags - R;
+ *flags++ = '\0'; // terminate "replace"
+ gflag = *flags;
+
q = begin_line(q);
if (b < 0) { // maybe :s/foo/bar/
- q = begin_line(dot); // start with cur line
- b = count_lines(text, q); // cur line number
+ q = begin_line(dot); // start with cur line
+ b = count_lines(text, q); // cur line number
}
if (e < 0)
e = b; // maybe :.s/foo/bar/
+
for (i = b; i <= e; i++) { // so, :20,23 s \0 find \0 replace \0
- ls = q; // orig line start
+ char *ls = q; // orig line start
+ char *found;
vc4:
- buf1 = char_search(q, F, FORWARD, LIMITED); // search cur line only for "find"
- if (buf1) {
+ found = char_search(q, F, FORWARD, LIMITED); // search cur line only for "find"
+ if (found) {
+ uintptr_t bias;
// we found the "find" pattern - delete it
- text_hole_delete(buf1, buf1 + strlen(F) - 1);
- // inset the "replace" patern
- string_insert(buf1, R); // insert the string
+ // For undo support, the first item should not be chained
+ text_hole_delete(found, found + len_F - 1, dont_chain_first_item);
+#if ENABLE_FEATURE_VI_UNDO
+ dont_chain_first_item = ALLOW_UNDO_CHAIN;
+#endif
+ // insert the "replace" patern
+ bias = string_insert(found, R, ALLOW_UNDO_CHAIN);
+ found += bias;
+ ls += bias;
+ /*q += bias; - recalculated anyway */
// check for "global" :s/foo/bar/g
- if (gflag == 1) {
- if ((buf1 + strlen(R)) < end_line(ls)) {
- q = buf1 + strlen(R);
+ if (gflag == 'g') {
+ if ((found + len_R) < end_line(ls)) {
+ q = found + len_R;
goto vc4; // don't let q move past cur line
}
}
q = next_line(ls);
}
#endif /* FEATURE_VI_SEARCH */
- } else if (strncasecmp(cmd, "version", i) == 0) { // show software version
+ } else if (strncmp(cmd, "version", i) == 0) { // show software version
status_line(BB_VER " " BB_BT);
- } else if (strncasecmp(cmd, "write", i) == 0 // write text to file
- || strncasecmp(cmd, "wq", i) == 0
- || strncasecmp(cmd, "wn", i) == 0
- || strncasecmp(cmd, "x", i) == 0
+ } else if (strncmp(cmd, "write", i) == 0 // write text to file
+ || strncmp(cmd, "wq", i) == 0
+ || strncmp(cmd, "wn", i) == 0
+ || (cmd[0] == 'x' && !cmd[1])
) {
+ int size;
+ //int forced = FALSE;
+
// is there a file name to write to?
if (args[0]) {
fn = args;
}
#if ENABLE_FEATURE_VI_READONLY
if (readonly_mode && !useforce) {
- status_line_bold("\"%s\" File is read only", fn);
- goto vc3;
+ status_line_bold("'%s' is read only", fn);
+ goto ret;
}
#endif
// how many lines in text[]?
li = count_lines(q, r);
- ch = r - q + 1;
- // see if file exists- if not, its just a new file request
- if (useforce) {
+ size = r - q + 1;
+ //if (useforce) {
// if "fn" is not write-able, chmod u+w
// sprintf(syscmd, "chmod u+w %s", fn);
// system(syscmd);
- forced = TRUE;
- }
+ // forced = TRUE;
+ //}
l = file_write(fn, q, r);
- if (useforce && forced) {
+ //if (useforce && forced) {
// chmod u-w
// sprintf(syscmd, "chmod u-w %s", fn);
// system(syscmd);
- forced = FALSE;
- }
+ // forced = FALSE;
+ //}
if (l < 0) {
if (l == -1)
- status_line_bold("\"%s\" %s", fn, strerror(errno));
+ status_line_bold_errno(fn);
} else {
- status_line("\"%s\" %dL, %dC", fn, li, l);
- if (q == text && r == end - 1 && l == ch) {
- file_modified = 0;
- last_file_modified = -1;
+ status_line("'%s' %dL, %dC", fn, li, l);
+ if (q == text && r == end - 1 && l == size) {
+ modified_count = 0;
+ last_modified_count = -1;
}
- if ((cmd[0] == 'x' || cmd[1] == 'q' || cmd[1] == 'n' ||
- cmd[0] == 'X' || cmd[1] == 'Q' || cmd[1] == 'N')
- && l == ch) {
+ if ((cmd[0] == 'x' || cmd[1] == 'q' || cmd[1] == 'n'
+ || cmd[0] == 'X' || cmd[1] == 'Q' || cmd[1] == 'N'
+ )
+ && l == size
+ ) {
editing = 0;
}
}
-#if ENABLE_FEATURE_VI_READONLY
- vc3:;
-#endif
#if ENABLE_FEATURE_VI_YANKMARK
- } else if (strncasecmp(cmd, "yank", i) == 0) { // yank lines
+ } else if (strncmp(cmd, "yank", i) == 0) { // yank lines
if (b < 0) { // no addr given- use defaults
q = begin_line(dot); // assume .,. for the range
r = end_line(dot);
// cmd unknown
not_implemented(cmd);
}
- vc1:
+ ret:
dot = bound_dot(dot); // make sure "dot" is valid
return;
#if ENABLE_FEATURE_VI_SEARCH
colon_s_fail:
status_line(":s expression missing delimiters");
#endif
-}
-
#endif /* FEATURE_VI_COLON */
+}
static void Hit_Return(void)
{
}
//----- Synchronize the cursor to Dot --------------------------
-static void sync_cursor(char *d, int *row, int *col)
+static NOINLINE void sync_cursor(char *d, int *row, int *col)
{
char *beg_cur; // begin and end of "d" line
char *tp;
static char *prev_line(char *p) // return pointer first char prev line
{
- p = begin_line(p); // goto begining of cur line
+ p = begin_line(p); // goto beginning of cur line
if (p > text && p[-1] == '\n')
p--; // step to prev line
- p = begin_line(p); // goto begining of prev line
+ p = begin_line(p); // goto beginning of prev line
return p;
}
return cnt;
}
-static char *find_line(int li) // find begining of line #li
+static char *find_line(int li) // find beginning of line #li
{
char *q;
//----- Dot Movement Routines ----------------------------------
static void dot_left(void)
{
+ undo_queue_commit();
if (dot > text && dot[-1] != '\n')
dot--;
}
static void dot_right(void)
{
+ undo_queue_commit();
if (dot < end - 1 && *dot != '\n')
dot++;
}
static void dot_begin(void)
{
+ undo_queue_commit();
dot = begin_line(dot); // return pointer to first char cur line
}
static void dot_end(void)
{
+ undo_queue_commit();
dot = end_line(dot); // return pointer to last char cur line
}
static void dot_next(void)
{
+ undo_queue_commit();
dot = next_line(dot);
}
static void dot_prev(void)
{
+ undo_queue_commit();
dot = prev_line(dot);
}
{
char *q;
+ undo_queue_commit();
for (; cnt > 0; cnt--) {
if (dir < 0) {
// scroll Backwards
dot++;
}
-static void dot_delete(void) // delete the char at 'dot'
-{
- text_hole_delete(dot, dot);
-}
-
static char *bound_dot(char *p) // make sure text[0] <= P < "end"
{
if (p >= end && end > text) {
p = end - 1;
- indicate_error('1');
+ indicate_error();
}
if (p < text) {
p = text;
- indicate_error('2');
+ indicate_error();
}
return p;
}
}
#if ENABLE_FEATURE_VI_SEARCH
-static int mycmp(const char *s1, const char *s2, int len)
+
+# if ENABLE_FEATURE_VI_REGEX_SEARCH
+
+// search for pattern starting at p
+static char *char_search(char *p, const char *pat, int dir, int range)
{
+ struct re_pattern_buffer preg;
+ const char *err;
+ char *q;
int i;
+ int size;
+
+ re_syntax_options = RE_SYNTAX_POSIX_EXTENDED;
+ if (ignorecase)
+ re_syntax_options = RE_SYNTAX_POSIX_EXTENDED | RE_ICASE;
+
+ memset(&preg, 0, sizeof(preg));
+ err = re_compile_pattern(pat, strlen(pat), &preg);
+ if (err != NULL) {
+ status_line_bold("bad search pattern '%s': %s", pat, err);
+ return p;
+ }
+
+ // assume a LIMITED forward search
+ q = end - 1;
+ if (dir == BACK)
+ q = text;
+ // RANGE could be negative if we are searching backwards
+ range = q - p;
+ q = p;
+ size = range;
+ if (range < 0) {
+ size = -size;
+ q = p - size;
+ if (q < text)
+ q = text;
+ }
+ // search for the compiled pattern, preg, in p[]
+ // range < 0: search backward
+ // range > 0: search forward
+ // 0 < start < size
+ // re_search() < 0: not found or error
+ // re_search() >= 0: index of found pattern
+ // struct pattern char int int int struct reg
+ // re_search(*pattern_buffer, *string, size, start, range, *regs)
+ i = re_search(&preg, q, size, /*start:*/ 0, range, /*struct re_registers*:*/ NULL);
+ regfree(&preg);
+ if (i < 0)
+ return NULL;
+ if (dir == FORWARD)
+ p = p + i;
+ else
+ p = p - i;
+ return p;
+}
- i = strncmp(s1, s2, len);
- if (ENABLE_FEATURE_VI_SETOPTS && ignorecase) {
- i = strncasecmp(s1, s2, len);
+# else
+
+# if ENABLE_FEATURE_VI_SETOPTS
+static int mycmp(const char *s1, const char *s2, int len)
+{
+ if (ignorecase) {
+ return strncasecmp(s1, s2, len);
}
- return i;
+ return strncmp(s1, s2, len);
}
+# else
+# define mycmp strncmp
+# endif
-// search for pattern starting at p
static char *char_search(char *p, const char *pat, int dir, int range)
{
-#ifndef REGEX_SEARCH
char *start, *stop;
int len;
len = strlen(pat);
if (dir == FORWARD) {
- stop = end - 1; // assume range is p - end-1
+ stop = end - 1; // assume range is p..end-1
if (range == LIMITED)
stop = next_line(p); // range is to next line
for (start = p; start < stop; start++) {
}
}
} else if (dir == BACK) {
- stop = text; // assume range is text - p
+ stop = text; // assume range is text..p
if (range == LIMITED)
stop = prev_line(p); // range is to prev line
for (start = p - len; start >= stop; start--) {
}
// pattern not found
return NULL;
-#else /* REGEX_SEARCH */
- char *q;
- struct re_pattern_buffer preg;
- int i;
- int size, range;
-
- re_syntax_options = RE_SYNTAX_POSIX_EXTENDED;
- preg.translate = 0;
- preg.fastmap = 0;
- preg.buffer = 0;
- preg.allocated = 0;
+}
- // assume a LIMITED forward search
- q = next_line(p);
- q = end_line(q);
- q = end - 1;
- if (dir == BACK) {
- q = prev_line(p);
- q = text;
- }
- // count the number of chars to search over, forward or backward
- size = q - p;
- if (size < 0)
- size = p - q;
- // RANGE could be negative if we are searching backwards
- range = q - p;
+# endif
- q = re_compile_pattern(pat, strlen(pat), &preg);
- if (q != 0) {
- // The pattern was not compiled
- status_line_bold("bad search pattern: \"%s\": %s", pat, q);
- i = 0; // return p if pattern not compiled
- goto cs1;
- }
-
- q = p;
- if (range < 0) {
- q = p - size;
- if (q < text)
- q = text;
- }
- // search for the compiled pattern, preg, in p[]
- // range < 0- search backward
- // range > 0- search forward
- // 0 < start < size
- // re_search() < 0 not found or error
- // re_search() > 0 index of found pattern
- // struct pattern char int int int struct reg
- // re_search (*pattern_buffer, *string, size, start, range, *regs)
- i = re_search(&preg, q, size, 0, range, 0);
- if (i == -1) {
- p = 0;
- i = 0; // return NULL if pattern not found
- }
- cs1:
- if (dir == FORWARD) {
- p = p + i;
- } else {
- p = p - i;
- }
- return p;
-#endif /* REGEX_SEARCH */
-}
#endif /* FEATURE_VI_SEARCH */
-static char *char_insert(char *p, char c) // insert the char c at 'p'
+static char *char_insert(char *p, char c, int undo) // insert the char c at 'p'
{
if (c == 22) { // Is this an ctrl-V?
- p = stupid_insert(p, '^'); // use ^ to indicate literal next
- p--; // backup onto ^
+ p += stupid_insert(p, '^'); // use ^ to indicate literal next
refresh(FALSE); // show the ^
c = get_one_char();
*p = c;
+#if ENABLE_FEATURE_VI_UNDO
+ switch (undo) {
+ case ALLOW_UNDO:
+ undo_push(p, 1, UNDO_INS);
+ break;
+ case ALLOW_UNDO_CHAIN:
+ undo_push(p, 1, UNDO_INS_CHAIN);
+ break;
+# if ENABLE_FEATURE_VI_UNDO_QUEUE
+ case ALLOW_UNDO_QUEUED:
+ undo_push(p, 1, UNDO_INS_QUEUED);
+ break;
+# endif
+ }
+#else
+ modified_count++;
+#endif /* ENABLE_FEATURE_VI_UNDO */
p++;
- file_modified++;
} else if (c == 27) { // Is this an ESC?
cmd_mode = 0;
+ undo_queue_commit();
cmdcnt = 0;
end_cmd_q(); // stop adding to q
last_status_cksum = 0; // force status update
p--;
}
} else if (c == erase_char || c == 8 || c == 127) { // Is this a BS
- // 123456789
- if ((p[-1] != '\n') && (dot>text)) {
+ if (p > text) {
p--;
- p = text_hole_delete(p, p); // shrink buffer 1 char
+ p = text_hole_delete(p, p, ALLOW_UNDO_QUEUED); // shrink buffer 1 char
}
} else {
// insert a char into text[]
- char *sp; // "save p"
-
if (c == 13)
c = '\n'; // translate \r to \n
- sp = p; // remember addr of insert
- p = stupid_insert(p, c); // insert the char
+#if ENABLE_FEATURE_VI_UNDO
+# if ENABLE_FEATURE_VI_UNDO_QUEUE
+ if (c == '\n')
+ undo_queue_commit();
+# endif
+ switch (undo) {
+ case ALLOW_UNDO:
+ undo_push(p, 1, UNDO_INS);
+ break;
+ case ALLOW_UNDO_CHAIN:
+ undo_push(p, 1, UNDO_INS_CHAIN);
+ break;
+# if ENABLE_FEATURE_VI_UNDO_QUEUE
+ case ALLOW_UNDO_QUEUED:
+ undo_push(p, 1, UNDO_INS_QUEUED);
+ break;
+# endif
+ }
+#else
+ modified_count++;
+#endif /* ENABLE_FEATURE_VI_UNDO */
+ p += 1 + stupid_insert(p, c); // insert the char
#if ENABLE_FEATURE_VI_SETOPTS
- if (showmatch && strchr(")]}", *sp) != NULL) {
- showmatching(sp);
+ if (showmatch && strchr(")]}", c) != NULL) {
+ showmatching(p - 1);
}
if (autoindent && c == '\n') { // auto indent the new line
char *q;
-
- q = prev_line(p); // use prev line as templet
- for (; isblank(*q); q++) {
- p = stupid_insert(p, *q); // insert the char
+ size_t len;
+ q = prev_line(p); // use prev line as template
+ len = strspn(q, " \t"); // space or tab
+ if (len) {
+ uintptr_t bias;
+ bias = text_hole_make(p, len);
+ p += bias;
+ q += bias;
+#if ENABLE_FEATURE_VI_UNDO
+ undo_push(p, len, UNDO_INS);
+#endif
+ memcpy(p, q, len);
+ p += len;
}
}
#endif
return p;
}
-static char *stupid_insert(char *p, char c) // stupidly insert the char c at 'p'
+// might reallocate text[]! use p += stupid_insert(p, ...),
+// and be careful to not use pointers into potentially freed text[]!
+static uintptr_t stupid_insert(char *p, char c) // stupidly insert the char c at 'p'
{
- p = text_hole_make(p, 1);
+ uintptr_t bias;
+ bias = text_hole_make(p, 1);
+ p += bias;
*p = c;
- //file_modified++; - done by text_hole_make()
- return p + 1;
+ return bias;
}
static int find_range(char **start, char **stop, char c)
dot_end(); // find NL
q = dot;
} else {
- // nothing -- this causes any other values of c to
- // represent the one-character range under the
- // cursor. this is correct for ' ' and 'l', but
- // perhaps no others.
- //
+ // nothing -- this causes any other values of c to
+ // represent the one-character range under the
+ // cursor. this is correct for ' ' and 'l', but
+ // perhaps no others.
+ //
}
if (q < p) {
t = q;
if (type == S_BEFORE_WS) {
c = ci;
- test = ((!isspace(c)) || c == '\n');
+ test = (!isspace(c) || c == '\n');
}
if (type == S_TO_WS) {
c = c0;
- test = ((!isspace(c)) || c == '\n');
+ test = (!isspace(c) || c == '\n');
}
if (type == S_OVER_WS) {
c = c0;
- test = ((isspace(c)));
+ test = isspace(c);
}
if (type == S_END_PUNCT) {
c = ci;
- test = ((ispunct(c)));
+ test = ispunct(c);
}
if (type == S_END_ALNUM) {
c = ci;
- test = ((isalnum(c)) || c == '_');
+ test = (isalnum(c) || c == '_');
}
*tested = c;
return test;
}
// find matching char of pair () [] {}
+// will crash if c is not one of these
static char *find_pair(char *p, const char c)
{
- char match, *q;
+ const char *braces = "()[]{}";
+ char match;
int dir, level;
- match = ')';
+ dir = strchr(braces, c) - braces;
+ dir ^= 1;
+ match = braces[dir];
+ dir = ((dir & 1) << 1) - 1; /* 1 for ([{, -1 for )\} */
+
+ // look for match, count levels of pairs (( ))
level = 1;
- dir = 1; // assume forward
- switch (c) {
- case '(': match = ')'; break;
- case '[': match = ']'; break;
- case '{': match = '}'; break;
- case ')': match = '('; dir = -1; break;
- case ']': match = '['; dir = -1; break;
- case '}': match = '{'; dir = -1; break;
- }
- for (q = p + dir; text <= q && q < end; q += dir) {
- // look for match, count levels of pairs (( ))
- if (*q == c)
+ for (;;) {
+ p += dir;
+ if (p < text || p >= end)
+ return NULL;
+ if (*p == c)
level++; // increase pair levels
- if (*q == match)
+ if (*p == match) {
level--; // reduce pair level
- if (level == 0)
- break; // found matching pair
+ if (level == 0)
+ return p; // found matching pair
+ }
}
- if (level != 0)
- q = NULL; // indicate no match
- return q;
}
#if ENABLE_FEATURE_VI_SETOPTS
// we found half of a pair
q = find_pair(p, *p); // get loc of matching char
if (q == NULL) {
- indicate_error('3'); // no matching char
+ indicate_error(); // no matching char
} else {
// "q" now points to matching pair
save_dot = dot; // remember where we are
}
#endif /* FEATURE_VI_SETOPTS */
-// open a hole in text[]
-static char *text_hole_make(char *p, int size) // at "p", make a 'size' byte hole
+#if ENABLE_FEATURE_VI_UNDO
+static void flush_undo_data(void)
+{
+ struct undo_object *undo_entry;
+
+ while (undo_stack_tail) {
+ undo_entry = undo_stack_tail;
+ undo_stack_tail = undo_entry->prev;
+ free(undo_entry);
+ }
+}
+
+// Undo functions and hooks added by Jody Bruchon (jody@jodybruchon.com)
+static void undo_push(char *src, unsigned int length, uint8_t u_type) // Add to the undo stack
+{
+ struct undo_object *undo_entry;
+
+ // "u_type" values
+ // UNDO_INS: insertion, undo will remove from buffer
+ // UNDO_DEL: deleted text, undo will restore to buffer
+ // UNDO_{INS,DEL}_CHAIN: Same as above but also calls undo_pop() when complete
+ // The CHAIN operations are for handling multiple operations that the user
+ // performs with a single action, i.e. REPLACE mode or find-and-replace commands
+ // UNDO_{INS,DEL}_QUEUED: If queuing feature is enabled, allow use of the queue
+ // for the INS/DEL operation. The raw values should be equal to the values of
+ // UNDO_{INS,DEL} ORed with UNDO_QUEUED_FLAG
+
+#if ENABLE_FEATURE_VI_UNDO_QUEUE
+ // This undo queuing functionality groups multiple character typing or backspaces
+ // into a single large undo object. This greatly reduces calls to malloc() for
+ // single-character operations while typing and has the side benefit of letting
+ // an undo operation remove chunks of text rather than a single character.
+ switch (u_type) {
+ case UNDO_EMPTY: // Just in case this ever happens...
+ return;
+ case UNDO_DEL_QUEUED:
+ if (length != 1)
+ return; // Only queue single characters
+ switch (undo_queue_state) {
+ case UNDO_EMPTY:
+ undo_queue_state = UNDO_DEL;
+ case UNDO_DEL:
+ undo_queue_spos = src;
+ undo_q++;
+ undo_queue[CONFIG_FEATURE_VI_UNDO_QUEUE_MAX - undo_q] = *src;
+ // If queue is full, dump it into an object
+ if (undo_q == CONFIG_FEATURE_VI_UNDO_QUEUE_MAX)
+ undo_queue_commit();
+ return;
+ case UNDO_INS:
+ // Switch from storing inserted text to deleted text
+ undo_queue_commit();
+ undo_push(src, length, UNDO_DEL_QUEUED);
+ return;
+ }
+ break;
+ case UNDO_INS_QUEUED:
+ if (length != 1)
+ return;
+ switch (undo_queue_state) {
+ case UNDO_EMPTY:
+ undo_queue_state = UNDO_INS;
+ undo_queue_spos = src;
+ case UNDO_INS:
+ undo_q++; // Don't need to save any data for insertions
+ if (undo_q == CONFIG_FEATURE_VI_UNDO_QUEUE_MAX)
+ undo_queue_commit();
+ return;
+ case UNDO_DEL:
+ // Switch from storing deleted text to inserted text
+ undo_queue_commit();
+ undo_push(src, length, UNDO_INS_QUEUED);
+ return;
+ }
+ break;
+ }
+#else
+ // If undo queuing is disabled, ignore the queuing flag entirely
+ u_type = u_type & ~UNDO_QUEUED_FLAG;
+#endif
+
+ // Allocate a new undo object
+ if (u_type == UNDO_DEL || u_type == UNDO_DEL_CHAIN) {
+ // For UNDO_DEL objects, save deleted text
+ if ((src + length) == end)
+ length--;
+ // If this deletion empties text[], strip the newline. When the buffer becomes
+ // zero-length, a newline is added back, which requires this to compensate.
+ undo_entry = xzalloc(offsetof(struct undo_object, undo_text) + length);
+ memcpy(undo_entry->undo_text, src, length);
+ } else {
+ undo_entry = xzalloc(sizeof(*undo_entry));
+ }
+ undo_entry->length = length;
+#if ENABLE_FEATURE_VI_UNDO_QUEUE
+ if ((u_type & UNDO_USE_SPOS) != 0) {
+ undo_entry->start = undo_queue_spos - text; // use start position from queue
+ } else {
+ undo_entry->start = src - text; // use offset from start of text buffer
+ }
+ u_type = (u_type & ~UNDO_USE_SPOS);
+#else
+ undo_entry->start = src - text;
+#endif
+ undo_entry->u_type = u_type;
+
+ // Push it on undo stack
+ undo_entry->prev = undo_stack_tail;
+ undo_stack_tail = undo_entry;
+ modified_count++;
+}
+
+static void undo_pop(void) // Undo the last operation
+{
+ int repeat;
+ char *u_start, *u_end;
+ struct undo_object *undo_entry;
+
+ // Commit pending undo queue before popping (should be unnecessary)
+ undo_queue_commit();
+
+ undo_entry = undo_stack_tail;
+ // Check for an empty undo stack
+ if (!undo_entry) {
+ status_line("Already at oldest change");
+ return;
+ }
+
+ switch (undo_entry->u_type) {
+ case UNDO_DEL:
+ case UNDO_DEL_CHAIN:
+ // make hole and put in text that was deleted; deallocate text
+ u_start = text + undo_entry->start;
+ text_hole_make(u_start, undo_entry->length);
+ memcpy(u_start, undo_entry->undo_text, undo_entry->length);
+ status_line("Undo [%d] %s %d chars at position %d",
+ modified_count, "restored",
+ undo_entry->length, undo_entry->start
+ );
+ break;
+ case UNDO_INS:
+ case UNDO_INS_CHAIN:
+ // delete what was inserted
+ u_start = undo_entry->start + text;
+ u_end = u_start - 1 + undo_entry->length;
+ text_hole_delete(u_start, u_end, NO_UNDO);
+ status_line("Undo [%d] %s %d chars at position %d",
+ modified_count, "deleted",
+ undo_entry->length, undo_entry->start
+ );
+ break;
+ }
+ repeat = 0;
+ switch (undo_entry->u_type) {
+ // If this is the end of a chain, lower modification count and refresh display
+ case UNDO_DEL:
+ case UNDO_INS:
+ dot = (text + undo_entry->start);
+ refresh(FALSE);
+ break;
+ case UNDO_DEL_CHAIN:
+ case UNDO_INS_CHAIN:
+ repeat = 1;
+ break;
+ }
+ // Deallocate the undo object we just processed
+ undo_stack_tail = undo_entry->prev;
+ free(undo_entry);
+ modified_count--;
+ // For chained operations, continue popping all the way down the chain.
+ if (repeat) {
+ undo_pop(); // Follow the undo chain if one exists
+ }
+}
+
+#if ENABLE_FEATURE_VI_UNDO_QUEUE
+static void undo_queue_commit(void) // Flush any queued objects to the undo stack
+{
+ // Pushes the queue object onto the undo stack
+ if (undo_q > 0) {
+ // Deleted character undo events grow from the end
+ undo_push(undo_queue + CONFIG_FEATURE_VI_UNDO_QUEUE_MAX - undo_q,
+ undo_q,
+ (undo_queue_state | UNDO_USE_SPOS)
+ );
+ undo_queue_state = UNDO_EMPTY;
+ undo_q = 0;
+ }
+}
+#endif
+
+#endif /* ENABLE_FEATURE_VI_UNDO */
+
+// open a hole in text[]
+// might reallocate text[]! use p += text_hole_make(p, ...),
+// and be careful to not use pointers into potentially freed text[]!
+static uintptr_t text_hole_make(char *p, int size) // at "p", make a 'size' byte hole
{
+ uintptr_t bias = 0;
+
if (size <= 0)
- return p;
+ return bias;
end += size; // adjust the new END
if (end >= (text + text_size)) {
char *new_text;
text_size += end - (text + text_size) + 10240;
new_text = xrealloc(text, text_size);
- screenbegin = new_text + (screenbegin - text);
- dot = new_text + (dot - text);
- end = new_text + (end - text);
- p = new_text + (p - text);
+ bias = (new_text - text);
+ screenbegin += bias;
+ dot += bias;
+ end += bias;
+ p += bias;
+#if ENABLE_FEATURE_VI_YANKMARK
+ {
+ int i;
+ for (i = 0; i < ARRAY_SIZE(mark); i++)
+ if (mark[i])
+ mark[i] += bias;
+ }
+#endif
text = new_text;
}
memmove(p + size, p, end - size - p);
memset(p, ' ', size); // clear new hole
- file_modified++;
- return p;
+ return bias;
}
// close a hole in text[]
-static char *text_hole_delete(char *p, char *q) // delete "p" through "q", inclusive
+// "undo" value indicates if this operation should be undo-able
+static char *text_hole_delete(char *p, char *q, int undo) // delete "p" through "q", inclusive
{
char *src, *dest;
int cnt, hole_size;
}
hole_size = q - p + 1;
cnt = end - src;
+#if ENABLE_FEATURE_VI_UNDO
+ switch (undo) {
+ case NO_UNDO:
+ break;
+ case ALLOW_UNDO:
+ undo_push(p, hole_size, UNDO_DEL);
+ break;
+ case ALLOW_UNDO_CHAIN:
+ undo_push(p, hole_size, UNDO_DEL_CHAIN);
+ break;
+# if ENABLE_FEATURE_VI_UNDO_QUEUE
+ case ALLOW_UNDO_QUEUED:
+ undo_push(p, hole_size, UNDO_DEL_QUEUED);
+ break;
+# endif
+ }
+ modified_count--;
+#endif
if (src < text || src > end)
goto thd0;
if (dest < text || dest >= end)
goto thd0;
+ modified_count++;
if (src >= end)
goto thd_atend; // just delete the end of the buffer
memmove(dest, src, cnt);
dest = end - 1; // make sure dest in below end-1
if (end <= text)
dest = end = text; // keep pointers valid
- file_modified++;
thd0:
return dest;
}
// copy text into register, then delete text.
// if dist <= 0, do not include, or go past, a NewLine
//
-static char *yank_delete(char *start, char *stop, int dist, int yf)
+static char *yank_delete(char *start, char *stop, int dist, int yf, int undo)
{
char *p;
text_yank(start, stop, YDreg);
#endif
if (yf == YANKDEL) {
- p = text_hole_delete(start, stop);
+ p = text_hole_delete(start, stop, undo);
} // delete lines
return p;
}
"\n\tPattern searches with / and ?"
#endif
#if ENABLE_FEATURE_VI_DOT_CMD
- "\n\tLast command repeat with \'.\'"
+ "\n\tLast command repeat with ."
#endif
#if ENABLE_FEATURE_VI_YANKMARK
"\n\tLine marking with 'x"
"\n\tNamed buffers with \"x"
#endif
#if ENABLE_FEATURE_VI_READONLY
- "\n\tReadonly if vi is called as \"view\""
- "\n\tReadonly with -R command line arg"
+ //not implemented: "\n\tReadonly if vi is called as \"view\""
+ //redundant: usage text says this too: "\n\tReadonly with -R command line arg"
#endif
#if ENABLE_FEATURE_VI_SET
- "\n\tSome colon mode commands with \':\'"
+ "\n\tSome colon mode commands with :"
#endif
#if ENABLE_FEATURE_VI_SETOPTS
"\n\tSettable options with \":set\""
#if ENABLE_FEATURE_VI_YANKMARK \
|| (ENABLE_FEATURE_VI_COLON && ENABLE_FEATURE_VI_SEARCH) \
|| ENABLE_FEATURE_VI_CRASHME
-static char *string_insert(char *p, char *s) // insert the string at 'p'
+// might reallocate text[]! use p += string_insert(p, ...),
+// and be careful to not use pointers into potentially freed text[]!
+static uintptr_t string_insert(char *p, const char *s, int undo) // insert the string at 'p'
{
- int cnt, i;
+ uintptr_t bias;
+ int i;
i = strlen(s);
- text_hole_make(p, i);
- strncpy(p, s, i);
- for (cnt = 0; *s != '\0'; s++) {
- if (*s == '\n')
- cnt++;
+#if ENABLE_FEATURE_VI_UNDO
+ switch (undo) {
+ case ALLOW_UNDO:
+ undo_push(p, i, UNDO_INS);
+ break;
+ case ALLOW_UNDO_CHAIN:
+ undo_push(p, i, UNDO_INS_CHAIN);
+ break;
}
+#endif
+ bias = text_hole_make(p, i);
+ p += bias;
+ memcpy(p, s, i);
#if ENABLE_FEATURE_VI_YANKMARK
- status_line("Put %d lines (%d chars) from [%c]", cnt, i, what_reg());
+ {
+ int cnt;
+ for (cnt = 0; *s != '\0'; s++) {
+ if (*s == '\n')
+ cnt++;
+ }
+ status_line("Put %d lines (%d chars) from [%c]", cnt, i, what_reg());
+ }
#endif
- return p;
+ return bias;
}
#endif
#if ENABLE_FEATURE_VI_YANKMARK
static char *text_yank(char *p, char *q, int dest) // copy text into a register
{
- char *t;
- int cnt;
-
- if (q < p) { // they are backwards- reverse them
- t = q;
- q = p;
- p = t;
+ int cnt = q - p;
+ if (cnt < 0) { // they are backwards- reverse them
+ p = q;
+ cnt = -cnt;
}
- cnt = q - p + 1;
- t = reg[dest];
- free(t); // if already a yank register, free it
- t = xmalloc(cnt + 1); // get a new register
- memset(t, '\0', cnt + 1); // clear new text[]
- strncpy(t, p, cnt); // copy text[] into bufer
- reg[dest] = t;
+ free(reg[dest]); // if already a yank register, free it
+ reg[dest] = xstrndup(p, cnt + 1);
return p;
}
// only swap context if other context is valid
if (text <= mark[27] && mark[27] <= end - 1) {
tmp = mark[27];
- mark[27] = mark[26];
- mark[26] = tmp;
- p = mark[26]; // where we are going- previous context
+ mark[27] = p;
+ mark[26] = p = tmp;
context_start = prev_line(prev_line(prev_line(p)));
context_end = next_line(next_line(next_line(p)));
}
{
tcgetattr(0, &term_orig);
term_vi = term_orig;
- term_vi.c_lflag &= (~ICANON & ~ECHO); // leave ISIG ON- allow intr's
+ term_vi.c_lflag &= (~ICANON & ~ECHO); // leave ISIG on - allow intr's
term_vi.c_iflag &= (~IXON & ~ICRNL);
term_vi.c_oflag &= (~ONLCR);
term_vi.c_cc[VMIN] = 1;
term_vi.c_cc[VTIME] = 0;
erase_char = term_vi.c_cc[VERASE];
- tcsetattr(0, TCSANOW, &term_vi);
+ tcsetattr_stdin_TCSANOW(&term_vi);
}
static void cookmode(void)
{
- fflush(stdout);
- tcsetattr(0, TCSANOW, &term_orig);
+ fflush_all();
+ tcsetattr_stdin_TCSANOW(&term_orig);
}
-//----- Come here when we get a window resize signal ---------
#if ENABLE_FEATURE_VI_USE_SIGNALS
+//----- Come here when we get a window resize signal ---------
static void winch_sig(int sig UNUSED_PARAM)
{
+ int save_errno = errno;
// FIXME: do it in main loop!!!
signal(SIGWINCH, winch_sig);
- if (ENABLE_FEATURE_VI_WIN_RESIZE) {
- get_terminal_width_height(0, &columns, &rows);
- if (rows > MAX_SCR_ROWS) rows = MAX_SCR_ROWS;
- if (columns > MAX_SCR_COLS) columns = MAX_SCR_COLS;
- }
+ query_screen_dimensions();
new_screen(rows, columns); // get memory for virtual screen
redraw(TRUE); // re-draw the screen
+ errno = save_errno;
}
//----- Come here when we get a continue signal -------------------
static void cont_sig(int sig UNUSED_PARAM)
{
+ int save_errno = errno;
rawmode(); // terminal to "raw"
last_status_cksum = 0; // force status update
redraw(TRUE); // re-draw the screen
signal(SIGTSTP, suspend_sig);
signal(SIGCONT, SIG_DFL);
- kill(my_pid, SIGCONT); // huh? why? we are already "continued"...
+ //kill(my_pid, SIGCONT); // huh? why? we are already "continued"...
+ errno = save_errno;
}
//----- Come here when we get a Suspend signal -------------------
static void suspend_sig(int sig UNUSED_PARAM)
{
+ int save_errno = errno;
go_bottom_and_clear_to_eol();
cookmode(); // terminal to "cooked"
signal(SIGCONT, cont_sig);
signal(SIGTSTP, SIG_DFL);
kill(my_pid, SIGTSTP);
+ errno = save_errno;
}
//----- Come here when we get a signal ---------------------------
static void catch_sig(int sig)
{
signal(SIGINT, catch_sig);
- if (sig)
- siglongjmp(restart, sig);
+ siglongjmp(restart, sig);
}
#endif /* FEATURE_VI_USE_SIGNALS */
-static int mysleep(int hund) // sleep for 'h' 1/100 seconds
+static int mysleep(int hund) // sleep for 'hund' 1/100 seconds or stdin ready
{
struct pollfd pfd[1];
- pfd[0].fd = 0;
+ if (hund != 0)
+ fflush_all();
+
+ pfd[0].fd = STDIN_FILENO;
pfd[0].events = POLLIN;
return safe_poll(pfd, 1, hund*10) > 0;
}
{
int c;
- fflush(stdout);
- c = read_key(STDIN_FILENO, &chars_to_parse, readbuffer);
+ fflush_all();
+ c = read_key(STDIN_FILENO, readbuffer, /*timeout off:*/ -2);
if (c == -1) { // EOF/error
go_bottom_and_clear_to_eol();
cookmode(); // terminal to "cooked"
#undef buf
}
-static int file_size(const char *fn) // what is the byte size of "fn"
-{
- struct stat st_buf;
- int cnt;
-
- cnt = -1;
- if (fn && fn[0] && stat(fn, &st_buf) == 0) // see if file exists
- cnt = (int) st_buf.st_size;
- return cnt;
-}
-
-static int file_insert(const char *fn, char *p
- USE_FEATURE_VI_READONLY(, int update_ro_status))
+// might reallocate text[]!
+static int file_insert(const char *fn, char *p, int initial)
{
int cnt = -1;
int fd, size;
struct stat statbuf;
- /* Validate file */
- if (stat(fn, &statbuf) < 0) {
- status_line_bold("\"%s\" %s", fn, strerror(errno));
- goto fi0;
- }
- if (!S_ISREG(statbuf.st_mode)) {
- // This is not a regular file
- status_line_bold("\"%s\" Not a regular file", fn);
- goto fi0;
- }
- if (p < text || p > end) {
- status_line_bold("Trying to insert file outside of memory");
- goto fi0;
- }
+ if (p < text)
+ p = text;
+ if (p > end)
+ p = end;
- // read file to buffer
fd = open(fn, O_RDONLY);
if (fd < 0) {
- status_line_bold("\"%s\" %s", fn, strerror(errno));
- goto fi0;
+ if (!initial)
+ status_line_bold_errno(fn);
+ return cnt;
}
- size = statbuf.st_size;
- p = text_hole_make(p, size);
- cnt = safe_read(fd, p, size);
+
+ /* Validate file */
+ if (fstat(fd, &statbuf) < 0) {
+ status_line_bold_errno(fn);
+ goto fi;
+ }
+ if (!S_ISREG(statbuf.st_mode)) {
+ status_line_bold("'%s' is not a regular file", fn);
+ goto fi;
+ }
+ size = (statbuf.st_size < INT_MAX ? (int)statbuf.st_size : INT_MAX);
+ p += text_hole_make(p, size);
+ cnt = full_read(fd, p, size);
if (cnt < 0) {
- status_line_bold("\"%s\" %s", fn, strerror(errno));
- p = text_hole_delete(p, p + size - 1); // un-do buffer insert
+ status_line_bold_errno(fn);
+ p = text_hole_delete(p, p + size - 1, NO_UNDO); // un-do buffer insert
} else if (cnt < size) {
- // There was a partial read, shrink unused space text[]
- p = text_hole_delete(p + cnt, p + (size - cnt) - 1); // un-do buffer insert
- status_line_bold("cannot read all of file \"%s\"", fn);
+ // There was a partial read, shrink unused space
+ p = text_hole_delete(p + cnt, p + size - 1, NO_UNDO);
+ status_line_bold("can't read '%s'", fn);
}
- if (cnt >= size)
- file_modified++;
+ fi:
close(fd);
- fi0:
+
#if ENABLE_FEATURE_VI_READONLY
- if (update_ro_status
+ if (initial
&& ((access(fn, W_OK) < 0) ||
/* root will always have access()
* so we check fileperms too */
status_line_bold("No current filename");
return -2;
}
- charcnt = 0;
/* By popular request we do not open file with O_TRUNC,
* but instead ftruncate() it _after_ successful write.
* Might reduce amount of data lost on power fail etc.
ftruncate(fd, charcnt);
if (charcnt == cnt) {
// good write
- //file_modified = FALSE;
+ //modified_count = FALSE;
} else {
charcnt = 0;
}
// 23,0 ... 23,79 <- status line
//----- Move the cursor to row x col (count from 0, not 1) -------
-static void place_cursor(int row, int col, int optimize)
+static void place_cursor(int row, int col)
{
- char cm1[sizeof(CMrc) + sizeof(int)*3 * 2];
-#if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
- enum {
- SZ_UP = sizeof(CMup),
- SZ_DN = sizeof(CMdown),
- SEQ_SIZE = SZ_UP > SZ_DN ? SZ_UP : SZ_DN,
- };
- char cm2[SEQ_SIZE * 5 + 32]; // bigger than worst case size
-#endif
- char *cm;
+ char cm1[sizeof(ESC_SET_CURSOR_POS) + sizeof(int)*3 * 2];
if (row < 0) row = 0;
if (row >= rows) row = rows - 1;
if (col < 0) col = 0;
if (col >= columns) col = columns - 1;
- //----- 1. Try the standard terminal ESC sequence
- sprintf(cm1, CMrc, row + 1, col + 1);
- cm = cm1;
-
-#if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
- if (optimize && col < 16) {
- char *screenp;
- int Rrow = last_row;
- int diff = Rrow - row;
-
- if (diff < -5 || diff > 5)
- goto skip;
-
- //----- find the minimum # of chars to move cursor -------------
- //----- 2. Try moving with discreet chars (Newline, [back]space, ...)
- cm2[0] = '\0';
-
- // move to the correct row
- while (row < Rrow) {
- // the cursor has to move up
- strcat(cm2, CMup);
- Rrow--;
- }
- while (row > Rrow) {
- // the cursor has to move down
- strcat(cm2, CMdown);
- Rrow++;
- }
-
- // now move to the correct column
- strcat(cm2, "\r"); // start at col 0
- // just send out orignal source char to get to correct place
- screenp = &screen[row * columns]; // start of screen line
- strncat(cm2, screenp, col);
-
- // pick the shortest cursor motion to send out
- if (strlen(cm2) < strlen(cm)) {
- cm = cm2;
- }
- skip: ;
- }
- last_row = row;
-#endif /* FEATURE_VI_OPTIMIZE_CURSOR */
- write1(cm);
+ sprintf(cm1, ESC_SET_CURSOR_POS, row + 1, col + 1);
+ write1(cm1);
}
//----- Erase from cursor to end of line -----------------------
static void clear_to_eol(void)
{
- write1(Ceol); // Erase from cursor to end of line
+ write1(ESC_CLEAR2EOL);
}
static void go_bottom_and_clear_to_eol(void)
{
- place_cursor(rows - 1, 0, FALSE); // go to bottom of screen
- clear_to_eol(); // erase to end of line
+ place_cursor(rows - 1, 0);
+ clear_to_eol();
}
//----- Erase from cursor to end of screen -----------------------
static void clear_to_eos(void)
{
- write1(Ceos); // Erase from cursor to end of screen
+ write1(ESC_CLEAR2EOS);
}
//----- Start standout mode ------------------------------------
-static void standout_start(void) // send "start reverse video" sequence
+static void standout_start(void)
{
- write1(SOs); // Start reverse video mode
+ write1(ESC_BOLD_TEXT);
}
//----- End standout mode --------------------------------------
-static void standout_end(void) // send "end reverse video" sequence
+static void standout_end(void)
{
- write1(SOn); // End reverse video mode
+ write1(ESC_NORM_TEXT);
}
//----- Flash the screen --------------------------------------
static void flash(int h)
{
- standout_start(); // send "start reverse video" sequence
+ standout_start();
redraw(TRUE);
mysleep(h);
- standout_end(); // send "end reverse video" sequence
+ standout_end();
redraw(TRUE);
}
-static void Indicate_Error(void)
+static void indicate_error(void)
{
#if ENABLE_FEATURE_VI_CRASHME
if (crashme > 0)
return; // generate a random command
#endif
if (!err_method) {
- write1(bell); // send out a bell character
+ write1(ESC_BELL);
} else {
flash(10);
}
}
have_status_msg = 0;
}
- place_cursor(crow, ccol, FALSE); // put cursor back in correct place
+ place_cursor(crow, ccol); // put cursor back in correct place
}
- fflush(stdout);
+ fflush_all();
}
//----- format the status buffer, the bottom line of screen ------
va_list args;
va_start(args, format);
- strcpy(status_buffer, SOs); // Terminal standout mode on
- vsprintf(status_buffer + sizeof(SOs)-1, format, args);
- strcat(status_buffer, SOn); // Terminal standout mode off
+ strcpy(status_buffer, ESC_BOLD_TEXT);
+ vsprintf(status_buffer + sizeof(ESC_BOLD_TEXT)-1, format, args);
+ strcat(status_buffer, ESC_NORM_TEXT);
va_end(args);
- have_status_msg = 1 + sizeof(SOs) + sizeof(SOn) - 2;
+ have_status_msg = 1 + sizeof(ESC_BOLD_TEXT) + sizeof(ESC_NORM_TEXT) - 2;
+}
+
+static void status_line_bold_errno(const char *fn)
+{
+ status_line_bold("'%s' %s", fn, strerror(errno));
}
// format status buffer
// copy s to buf, convert unprintable
static void print_literal(char *buf, const char *s)
{
+ char *d;
unsigned char c;
- char b[2];
- b[1] = '\0';
buf[0] = '\0';
if (!s[0])
s = "(NULL)";
+
+ d = buf;
for (; *s; s++) {
int c_is_no_print;
c = *s;
c_is_no_print = (c & 0x80) && !Isprint(c);
if (c_is_no_print) {
- strcat(buf, SOn);
+ strcpy(d, ESC_NORM_TEXT);
+ d += sizeof(ESC_NORM_TEXT)-1;
c = '.';
}
- if (c < ' ' || c == 127) {
- strcat(buf, "^");
- if (c == 127)
+ if (c < ' ' || c == 0x7f) {
+ *d++ = '^';
+ c |= '@'; /* 0x40 */
+ if (c == 0x7f)
c = '?';
- else
- c += '@';
- }
- b[0] = c;
- strcat(buf, b);
- if (c_is_no_print)
- strcat(buf, SOs);
- if (*s == '\n')
- strcat(buf, "$");
- if (strlen(buf) > MAX_INPUT_LEN - 10) // paranoia
+ }
+ *d++ = c;
+ *d = '\0';
+ if (c_is_no_print) {
+ strcpy(d, ESC_BOLD_TEXT);
+ d += sizeof(ESC_BOLD_TEXT)-1;
+ }
+ if (*s == '\n') {
+ *d++ = '$';
+ *d = '\0';
+ }
+ if (d - buf > MAX_INPUT_LEN - 10) // paranoia
break;
}
}
int cur, percent, ret, trunc_at;
- // file_modified is now a counter rather than a flag. this
+ // modified_count is now a counter rather than a flag. this
// helps reduce the amount of line counting we need to do.
// (this will cause a mis-reporting of modified status
// once every MAXINT editing operations.)
// we're on, then we shouldn't have to do this count_lines()
cur = count_lines(text, dot);
- // reduce counting -- the total lines can't have
- // changed if we haven't done any edits.
- if (file_modified != last_file_modified) {
+ // count_lines() is expensive.
+ // Call it only if something was changed since last time
+ // we were here:
+ if (modified_count != last_modified_count) {
tot = cur + count_lines(dot, end - 1) - 1;
- last_file_modified = file_modified;
+ last_modified_count = modified_count;
}
// current line percent
#if ENABLE_FEATURE_VI_READONLY
(readonly_mode ? " [Readonly]" : ""),
#endif
- (file_modified ? " [Modified]" : ""),
+ (modified_count ? " [Modified]" : ""),
cur, tot, percent);
if (ret >= 0 && ret < trunc_at)
//----- Force refresh of all Lines -----------------------------
static void redraw(int full_screen)
{
- place_cursor(0, 0, FALSE); // put cursor in correct place
- clear_to_eos(); // tell terminal to erase display
+ place_cursor(0, 0);
+ clear_to_eos();
screen_erase(); // erase the internal screen buffer
last_status_cksum = 0; // force status update
refresh(full_screen); // this will redraw the entire display
int li, changed;
char *tp, *sp; // pointer into text[] and screen[]
- if (ENABLE_FEATURE_VI_WIN_RESIZE) {
+ if (ENABLE_FEATURE_VI_WIN_RESIZE IF_FEATURE_VI_ASK_TERMINAL(&& !G.get_rowcol_error) ) {
unsigned c = columns, r = rows;
- get_terminal_width_height(0, &columns, &rows);
- if (rows > MAX_SCR_ROWS) rows = MAX_SCR_ROWS;
- if (columns > MAX_SCR_COLS) columns = MAX_SCR_COLS;
+ query_screen_dimensions();
full_screen |= (c - columns) | (r - rows);
}
sync_cursor(dot, &crow, &ccol); // where cursor will be (on "dot")
tp = t + 1;
}
- // see if there are any changes between vitual screen and out_buf
+ // see if there are any changes between virtual screen and out_buf
changed = FALSE; // assume no change
cs = 0;
ce = columns - 1;
if (cs < 0) cs = 0;
if (ce > columns - 1) ce = columns - 1;
if (cs > ce) { cs = 0; ce = columns - 1; }
- // is there a change between vitual screen and out_buf
+ // is there a change between virtual screen and out_buf
if (changed) {
// copy changed part of buffer to virtual screen
memcpy(sp+cs, out_buf+cs, ce-cs+1);
-
- // move cursor to column of first change
- //if (offset != old_offset) {
- // // place_cursor is still too stupid
- // // to handle offsets correctly
- // place_cursor(li, cs, FALSE);
- //} else {
- place_cursor(li, cs, TRUE);
- //}
-
+ place_cursor(li, cs);
// write line out to terminal
fwrite(&sp[cs], ce - cs + 1, 1, stdout);
}
}
- place_cursor(crow, ccol, TRUE);
+ place_cursor(crow, ccol);
old_offset = offset;
#undef old_offset
//----- Execute a Vi Command -----------------------------------
static void do_cmd(int c)
{
- const char *msg = msg; // for compiler
char *p, *q, *save_dot;
char buf[12];
int dir;
// c1 = c; // quiet the compiler
// cnt = yf = 0; // quiet the compiler
-// msg = p = q = save_dot = buf; // quiet the compiler
- memset(buf, '\0', 12);
+// p = q = save_dot = buf; // quiet the compiler
+ memset(buf, '\0', sizeof(buf));
show_status_line();
if (*dot == '\n') {
// don't Replace past E-o-l
cmd_mode = 1; // convert to insert
+ undo_queue_commit();
} else {
if (1 <= c || Isprint(c)) {
if (c != 27)
- dot = yank_delete(dot, dot, 0, YANKDEL); // delete char
- dot = char_insert(dot, c); // insert new char
+ dot = yank_delete(dot, dot, 0, YANKDEL, ALLOW_UNDO); // delete char
+ dot = char_insert(dot, c, ALLOW_UNDO_CHAIN); // insert new char
}
goto dc1;
}
if (c == KEYCODE_INSERT) goto dc5;
// insert the char c at "dot"
if (1 <= c || Isprint(c)) {
- dot = char_insert(dot, c);
+ dot = char_insert(dot, c, ALLOW_UNDO_QUEUED);
}
goto dc1;
}
//case ']': // ]-
//case '_': // _-
//case '`': // `-
- //case 'u': // u- FIXME- there is no undo
//case 'v': // v-
- default: // unrecognised command
+ default: // unrecognized command
buf[0] = c;
buf[1] = '\0';
- if (c < ' ') {
- buf[0] = '^';
- buf[1] = c + '@';
- buf[2] = '\0';
- }
not_implemented(buf);
end_cmd_q(); // stop adding to q
case 0x00: // nul- ignore
case KEYCODE_LEFT: // cursor key Left
case 8: // ctrl-H- move left (This may be ERASE char)
case 0x7f: // DEL- move left (This may be ERASE char)
- if (cmdcnt-- > 1) {
- do_cmd(c);
- } // repeat cnt
- dot_left();
+ do {
+ dot_left();
+ } while (--cmdcnt > 0);
break;
case 10: // Newline ^J
case 'j': // j- goto next line, same col
case KEYCODE_DOWN: // cursor key Down
- if (cmdcnt-- > 1) {
- do_cmd(c);
- } // repeat cnt
- dot_next(); // go to next B-o-l
- dot = move_to_col(dot, ccol + offset); // try stay in same col
+ do {
+ dot_next(); // go to next B-o-l
+ // try stay in same col
+ dot = move_to_col(dot, ccol + offset);
+ } while (--cmdcnt > 0);
break;
case 12: // ctrl-L force redraw whole screen
case 18: // ctrl-R force redraw
- place_cursor(0, 0, FALSE); // put cursor in correct place
- clear_to_eos(); // tel terminal to erase display
- mysleep(10);
+ place_cursor(0, 0);
+ clear_to_eos();
+ //mysleep(10); // why???
screen_erase(); // erase the internal screen buffer
last_status_cksum = 0; // force status update
refresh(TRUE); // this will redraw the entire display
break;
case 13: // Carriage Return ^M
case '+': // +- goto next line
- if (cmdcnt-- > 1) {
- do_cmd(c);
- } // repeat cnt
- dot_next();
- dot_skip_over_ws();
+ do {
+ dot_next();
+ dot_skip_over_ws();
+ } while (--cmdcnt > 0);
break;
case 21: // ctrl-U scroll up half screen
dot_scroll((rows - 2) / 2, -1);
break;
case 27: // esc
if (cmd_mode == 0)
- indicate_error(c);
+ indicate_error();
cmd_mode = 0; // stop insrting
+ undo_queue_commit();
end_cmd_q();
last_status_cksum = 0; // force status update
break;
case ' ': // move right
case 'l': // move right
case KEYCODE_RIGHT: // Cursor Key Right
- if (cmdcnt-- > 1) {
- do_cmd(c);
- } // repeat cnt
- dot_right();
+ do {
+ dot_right();
+ } while (--cmdcnt > 0);
break;
#if ENABLE_FEATURE_VI_YANKMARK
case '"': // "- name a register to use for Delete/Yank
if ((unsigned)c1 <= 25) { // a-z?
YDreg = c1;
} else {
- indicate_error(c);
+ indicate_error();
}
break;
case '\'': // '- goto a specific mark
- c1 = (get_one_char() | 0x20) - 'a';
- if ((unsigned)c1 <= 25) { // a-z?
+ c1 = (get_one_char() | 0x20);
+ if ((unsigned)(c1 - 'a') <= 25) { // a-z?
+ c1 = (c1 - 'a');
// get the b-o-l
q = mark[c1];
if (text <= q && q < end) {
dot_begin(); // go to B-o-l
dot_skip_over_ws();
} else {
- indicate_error(c);
+ indicate_error();
}
break;
case 'm': // m- Mark a line
// remember the line
mark[c1] = dot;
} else {
- indicate_error(c);
+ indicate_error();
}
break;
case 'P': // P- Put register before
case 'p': // p- put register after
p = reg[YDreg];
- if (p == 0) {
+ if (p == NULL) {
status_line_bold("Nothing in register %c", what_reg());
break;
}
if (c == 'p')
dot_right(); // move to right, can move to NL
}
- dot = string_insert(dot, p); // insert the string
+ string_insert(dot, p, ALLOW_UNDO); // insert the string
end_cmd_q(); // stop adding to q
break;
case 'U': // U- Undo; replace current line with original version
- if (reg[Ureg] != 0) {
+ if (reg[Ureg] != NULL) {
p = begin_line(dot);
q = end_line(dot);
- p = text_hole_delete(p, q); // delete cur line
- p = string_insert(p, reg[Ureg]); // insert orig line
+ p = text_hole_delete(p, q, ALLOW_UNDO); // delete cur line
+ p += string_insert(p, reg[Ureg], ALLOW_UNDO_CHAIN); // insert orig line
dot = p;
dot_skip_over_ws();
}
break;
#endif /* FEATURE_VI_YANKMARK */
+#if ENABLE_FEATURE_VI_UNDO
+ case 'u': // u- undo last operation
+ undo_pop();
+ break;
+#endif
case '$': // $- goto end of line
case KEYCODE_END: // Cursor Key End
- if (cmdcnt-- > 1) {
- do_cmd(c);
- } // repeat cnt
- dot = end_line(dot);
+ for (;;) {
+ dot = end_line(dot);
+ if (--cmdcnt <= 0)
+ break;
+ dot_next();
+ }
break;
case '%': // %- find matching char of pair () [] {}
for (q = dot; q < end && *q != '\n'; q++) {
// we found half of a pair
p = find_pair(q, *q);
if (p == NULL) {
- indicate_error(c);
+ indicate_error();
} else {
dot = p;
}
}
}
if (*q == '\n')
- indicate_error(c);
+ indicate_error();
break;
case 'f': // f- forward to a user specified char
last_forward_char = get_one_char(); // get the search char
//
//**** fall through to ... ';'
case ';': // ;- look at rest of line for last forward char
- if (cmdcnt-- > 1) {
- do_cmd(';');
- } // repeat cnt
- if (last_forward_char == 0)
- break;
- q = dot + 1;
- while (q < end - 1 && *q != '\n' && *q != last_forward_char) {
- q++;
- }
- if (*q == last_forward_char)
- dot = q;
+ do {
+ if (last_forward_char == 0)
+ break;
+ q = dot + 1;
+ while (q < end - 1 && *q != '\n' && *q != last_forward_char) {
+ q++;
+ }
+ if (*q == last_forward_char)
+ dot = q;
+ } while (--cmdcnt > 0);
break;
case ',': // repeat latest 'f' in opposite direction
- if (cmdcnt-- > 1) {
- do_cmd(',');
- } // repeat cnt
if (last_forward_char == 0)
break;
- q = dot - 1;
- while (q >= text && *q != '\n' && *q != last_forward_char) {
- q--;
- }
- if (q >= text && *q == last_forward_char)
- dot = q;
+ do {
+ q = dot - 1;
+ while (q >= text && *q != '\n' && *q != last_forward_char) {
+ q--;
+ }
+ if (q >= text && *q == last_forward_char)
+ dot = q;
+ } while (--cmdcnt > 0);
break;
case '-': // -- goto prev line
- if (cmdcnt-- > 1) {
- do_cmd(c);
- } // repeat cnt
- dot_prev();
- dot_skip_over_ws();
+ do {
+ dot_prev();
+ dot_skip_over_ws();
+ } while (--cmdcnt > 0);
break;
#if ENABLE_FEATURE_VI_DOT_CMD
case '.': // .- repeat the last modifying command
// user changed mind and erased the "/"- do nothing
break;
case 'N': // N- backward search for last pattern
- if (cmdcnt-- > 1) {
- do_cmd(c);
- } // repeat cnt
dir = BACK; // assume BACKWARD search
p = dot - 1;
if (last_search_pattern[0] == '?') {
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
- if (cmdcnt-- > 1) {
- do_cmd(c);
- } // repeat cnt
+ do {
+ const char *msg;
dc3:
- dir = FORWARD; // assume FORWARD search
- p = dot + 1;
- if (last_search_pattern[0] == '?') {
- dir = BACK;
- p = dot - 1;
- }
+ dir = FORWARD; // assume FORWARD search
+ p = dot + 1;
+ if (last_search_pattern[0] == '?') {
+ dir = BACK;
+ p = dot - 1;
+ }
dc4:
- q = char_search(p, last_search_pattern + 1, dir, FULL);
- if (q != NULL) {
- dot = q; // good search, update "dot"
- msg = "";
- 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, FULL);
- if (q != NULL) { // found something
- dot = q; // found new pattern- goto it
- msg = "search hit BOTTOM, continuing at TOP";
+ q = char_search(p, last_search_pattern + 1, dir, 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) {
- msg = "search hit TOP, continuing at BOTTOM";
+ p = end - 1;
+ }
+ q = char_search(p, last_search_pattern + 1, dir, 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";
}
- } else {
- msg = "Pattern not found";
- }
dc2:
- if (*msg)
- status_line_bold("%s", msg);
+ if (msg)
+ status_line_bold("%s", msg);
+ } while (--cmdcnt > 0);
break;
case '{': // {- move backward paragraph
q = char_search(dot, "\n\n", BACK, FULL);
}
break;
#endif /* FEATURE_VI_SEARCH */
- case '0': // 0- goto begining of line
+ case '0': // 0- goto beginning of line
case '1': // 1-
case '2': // 2-
case '3': // 3-
break;
case ':': // :- the colon mode commands
p = get_input_line(":"); // get input line- use "status line"
-#if ENABLE_FEATURE_VI_COLON
colon(p); // execute the command
-#else
- if (*p == ':')
- p++; // move past the ':'
- cnt = strlen(p);
- if (cnt <= 0)
- break;
- if (strncasecmp(p, "quit", cnt) == 0
- || strncasecmp(p, "q!", cnt) == 0 // delete lines
- ) {
- if (file_modified && p[1] != '!') {
- status_line_bold("No write since last change (:quit! overrides)");
- } else {
- editing = 0;
- }
- } else if (strncasecmp(p, "write", cnt) == 0
- || strncasecmp(p, "wq", cnt) == 0
- || strncasecmp(p, "wn", cnt) == 0
- || strncasecmp(p, "x", cnt) == 0
- ) {
- cnt = file_write(current_filename, text, end - 1);
- if (cnt < 0) {
- if (cnt == -1)
- status_line_bold("Write error: %s", strerror(errno));
- } else {
- file_modified = 0;
- last_file_modified = -1;
- status_line("\"%s\" %dL, %dC", current_filename, count_lines(text, end - 1), cnt);
- if (p[0] == 'x' || p[1] == 'q' || p[1] == 'n'
- || p[0] == 'X' || p[1] == 'Q' || p[1] == 'N'
- ) {
- editing = 0;
- }
- }
- } else if (strncasecmp(p, "file", cnt) == 0) {
- last_status_cksum = 0; // force status update
- } else if (sscanf(p, "%d", &j) > 0) {
- dot = find_line(j); // go to line # j
- dot_skip_over_ws();
- } else { // unrecognised cmd
- not_implemented(p);
- }
-#endif /* !FEATURE_VI_COLON */
break;
case '<': // <- Left shift something
case '>': // >- Right shift something
cnt = count_lines(text, dot); // remember what line we are on
c1 = get_one_char(); // get the type of thing to delete
find_range(&p, &q, c1);
- yank_delete(p, q, 1, YANKONLY); // save copy before change
+ yank_delete(p, q, 1, YANKONLY, NO_UNDO); // save copy before change
p = begin_line(p);
q = end_line(q);
i = count_lines(p, q); // # of lines we are shifting
// shift left- remove tab or 8 spaces
if (*p == '\t') {
// shrink buffer 1 char
- text_hole_delete(p, p);
+ text_hole_delete(p, p, NO_UNDO);
} else if (*p == ' ') {
// we should be calculating columns, not just SPACE
for (j = 0; *p == ' ' && j < tabstop; j++) {
- text_hole_delete(p, p);
+ text_hole_delete(p, p, NO_UNDO);
}
}
} else if (c == '>') {
// shift right -- add tab or 8 spaces
- char_insert(p, '\t');
+ char_insert(p, '\t', ALLOW_UNDO);
}
}
dot = find_line(cnt); // what line were we on
case 'B': // B- back a blank-delimited Word
case 'E': // E- end of a blank-delimited word
case 'W': // W- forward a blank-delimited word
- if (cmdcnt-- > 1) {
- do_cmd(c);
- } // repeat cnt
dir = FORWARD;
if (c == 'B')
dir = BACK;
- if (c == 'W' || isspace(dot[dir])) {
- dot = skip_thing(dot, 1, dir, S_TO_WS);
- dot = skip_thing(dot, 2, dir, S_OVER_WS);
- }
- if (c != 'W')
- dot = skip_thing(dot, 1, dir, S_BEFORE_WS);
+ do {
+ if (c == 'W' || isspace(dot[dir])) {
+ dot = skip_thing(dot, 1, dir, S_TO_WS);
+ dot = skip_thing(dot, 2, dir, S_OVER_WS);
+ }
+ if (c != 'W')
+ dot = skip_thing(dot, 1, dir, S_BEFORE_WS);
+ } while (--cmdcnt > 0);
break;
case 'C': // C- Change to e-o-l
case 'D': // D- delete to e-o-l
save_dot = dot;
dot = dollar_line(dot); // move to before NL
// copy text into a register and delete
- dot = yank_delete(save_dot, dot, 0, YANKDEL); // delete to e-o-l
+ dot = yank_delete(save_dot, dot, 0, YANKDEL, ALLOW_UNDO); // delete to e-o-l
if (c == 'C')
goto dc_i; // start inserting
#if ENABLE_FEATURE_VI_DOT_CMD
c1 = get_one_char();
if (c1 != 'g') {
buf[0] = 'g';
- buf[1] = c1; // TODO: if Unicode?
+ // c1 < 0 if the key was special. Try "g<up-arrow>"
+ // TODO: if Unicode?
+ buf[1] = (c1 >= 0 ? c1 : '*');
buf[2] = '\0';
not_implemented(buf);
break;
if (cmdcnt > (rows - 1)) {
cmdcnt = (rows - 1);
}
- if (cmdcnt-- > 1) {
+ if (--cmdcnt > 0) {
do_cmd('+');
- } // repeat cnt
+ }
dot_skip_over_ws();
break;
case 'I': // I- insert before first non-blank
case 'i': // i- insert before current char
case KEYCODE_INSERT: // Cursor Key Insert
dc_i:
- cmd_mode = 1; // start insrting
+ cmd_mode = 1; // start inserting
+ undo_queue_commit(); // commit queue when cmd_mode changes
break;
case 'J': // J- join current and next lines together
- if (cmdcnt-- > 2) {
- do_cmd(c);
- } // repeat cnt
- dot_end(); // move to NL
- if (dot < end - 1) { // make sure not last char in text[]
- *dot++ = ' '; // replace NL with space
- file_modified++;
- while (isblank(*dot)) { // delete leading WS
- dot_delete();
+ do {
+ dot_end(); // move to NL
+ if (dot < end - 1) { // make sure not last char in text[]
+#if ENABLE_FEATURE_VI_UNDO
+ undo_push(dot, 1, UNDO_DEL);
+ *dot++ = ' '; // replace NL with space
+ undo_push((dot - 1), 1, UNDO_INS_CHAIN);
+#else
+ *dot++ = ' ';
+ modified_count++;
+#endif
+ while (isblank(*dot)) { // delete leading WS
+ text_hole_delete(dot, dot, ALLOW_UNDO_CHAIN);
+ }
}
- }
+ } while (--cmdcnt > 0);
end_cmd_q(); // stop adding to q
break;
case 'L': // L- goto bottom line on screen
if (cmdcnt > (rows - 1)) {
cmdcnt = (rows - 1);
}
- if (cmdcnt-- > 1) {
+ if (--cmdcnt > 0) {
do_cmd('-');
- } // repeat cnt
+ }
dot_begin();
dot_skip_over_ws();
break;
dot_prev();
case 'o': // o- open a empty line below; Yes, I know it is in the middle of the "if (..."
dot_end();
- dot = char_insert(dot, '\n');
+ dot = char_insert(dot, '\n', ALLOW_UNDO);
} else {
dot_begin(); // 0
- dot = char_insert(dot, '\n'); // i\n ESC
+ dot = char_insert(dot, '\n', ALLOW_UNDO); // i\n ESC
dot_prev(); // -
}
goto dc_i;
case 'R': // R- continuous Replace char
dc5:
cmd_mode = 2;
+ undo_queue_commit();
break;
case KEYCODE_DELETE:
- c = 'x';
- // fall through
+ if (dot < end - 1)
+ dot = yank_delete(dot, dot, 1, YANKDEL, ALLOW_UNDO);
+ break;
case 'X': // X- delete char before dot
case 'x': // x- delete the current char
case 's': // s- substitute the current char
- if (cmdcnt-- > 1) {
- do_cmd(c);
- } // repeat cnt
dir = 0;
if (c == 'X')
dir = -1;
- if (dot[dir] != '\n') {
- if (c == 'X')
- dot--; // delete prev char
- dot = yank_delete(dot, dot, 0, YANKDEL); // delete char
- }
- if (c == 's')
- goto dc_i; // start insrting
+ do {
+ if (dot[dir] != '\n') {
+ if (c == 'X')
+ dot--; // delete prev char
+ dot = yank_delete(dot, dot, 0, YANKDEL, ALLOW_UNDO); // delete char
+ }
+ } while (--cmdcnt > 0);
end_cmd_q(); // stop adding to q
+ if (c == 's')
+ goto dc_i; // start inserting
break;
case 'Z': // Z- if modified, {write}; exit
// ZZ means to save file (if necessary), then exit
c1 = get_one_char();
if (c1 != 'Z') {
- indicate_error(c);
+ indicate_error();
break;
}
- if (file_modified) {
+ if (modified_count) {
if (ENABLE_FEATURE_VI_READONLY && readonly_mode) {
- status_line_bold("\"%s\" File is read only", current_filename);
+ status_line_bold("'%s' is read only", current_filename);
break;
}
cnt = file_write(current_filename, text, end - 1);
break;
case 'b': // b- back a word
case 'e': // e- end of word
- if (cmdcnt-- > 1) {
- do_cmd(c);
- } // repeat cnt
dir = FORWARD;
if (c == 'b')
dir = BACK;
- if ((dot + dir) < text || (dot + dir) > end - 1)
- break;
- dot += dir;
- if (isspace(*dot)) {
- dot = skip_thing(dot, (c == 'e') ? 2 : 1, dir, S_OVER_WS);
- }
- if (isalnum(*dot) || *dot == '_') {
- dot = skip_thing(dot, 1, dir, S_END_ALNUM);
- } else if (ispunct(*dot)) {
- dot = skip_thing(dot, 1, dir, S_END_PUNCT);
- }
+ do {
+ if ((dot + dir) < text || (dot + dir) > end - 1)
+ break;
+ dot += dir;
+ if (isspace(*dot)) {
+ dot = skip_thing(dot, (c == 'e') ? 2 : 1, dir, S_OVER_WS);
+ }
+ if (isalnum(*dot) || *dot == '_') {
+ dot = skip_thing(dot, 1, dir, S_END_ALNUM);
+ } else if (ispunct(*dot)) {
+ dot = skip_thing(dot, 1, dir, S_END_PUNCT);
+ }
+ } while (--cmdcnt > 0);
break;
case 'c': // c- change something
case 'd': // d- delete something
c1 = get_one_char(); // get the type of thing to delete
// determine range, and whether it spans lines
ml = find_range(&p, &q, c1);
+ place_cursor(0, 0);
if (c1 == 27) { // ESC- user changed mind and wants out
c = c1 = 27; // Escape- do nothing
} else if (strchr("wW", c1)) {
q--;
}
}
- dot = yank_delete(p, q, ml, yf); // delete word
+ dot = yank_delete(p, q, ml, yf, ALLOW_UNDO); // delete word
} else if (strchr("^0bBeEft%$ lh\b\177", c1)) {
// partial line copy text into a register and delete
- dot = yank_delete(p, q, ml, yf); // delete word
+ dot = yank_delete(p, q, ml, yf, ALLOW_UNDO); // delete word
} else if (strchr("cdykjHL+-{}\r\n", c1)) {
// whole line copy text into a register and delete
- dot = yank_delete(p, q, ml, yf); // delete lines
+ dot = yank_delete(p, q, ml, yf, ALLOW_UNDO); // delete lines
whole = 1;
} else {
// could not recognize object
c = c1 = 27; // error-
ml = 0;
- indicate_error(c);
+ indicate_error();
}
if (ml && whole) {
if (c == 'c') {
- dot = char_insert(dot, '\n');
+ dot = char_insert(dot, '\n', ALLOW_UNDO_CHAIN);
// on the last line of file don't move to prev line
if (whole && dot != (end-1)) {
dot_prev();
}
case 'k': // k- goto prev line, same col
case KEYCODE_UP: // cursor key Up
- if (cmdcnt-- > 1) {
- do_cmd(c);
- } // repeat cnt
- dot_prev();
- dot = move_to_col(dot, ccol + offset); // try stay in same col
+ do {
+ dot_prev();
+ dot = move_to_col(dot, ccol + offset); // try stay in same col
+ } while (--cmdcnt > 0);
break;
case 'r': // r- replace the current char with user input
c1 = get_one_char(); // get the replacement char
if (*dot != '\n') {
+#if ENABLE_FEATURE_VI_UNDO
+ undo_push(dot, 1, UNDO_DEL);
*dot = c1;
- file_modified++;
+ undo_push(dot, 1, UNDO_INS_CHAIN);
+#else
+ *dot = c1;
+ modified_count++;
+#endif
}
end_cmd_q(); // stop adding to q
break;
last_forward_char = 0;
break;
case 'w': // w- forward a word
- if (cmdcnt-- > 1) {
- do_cmd(c);
- } // repeat cnt
- if (isalnum(*dot) || *dot == '_') { // we are on ALNUM
- dot = skip_thing(dot, 1, FORWARD, S_END_ALNUM);
- } else if (ispunct(*dot)) { // we are on PUNCT
- dot = skip_thing(dot, 1, FORWARD, S_END_PUNCT);
- }
- if (dot < end - 1)
- dot++; // move over word
- if (isspace(*dot)) {
- dot = skip_thing(dot, 2, FORWARD, S_OVER_WS);
- }
+ do {
+ if (isalnum(*dot) || *dot == '_') { // we are on ALNUM
+ dot = skip_thing(dot, 1, FORWARD, S_END_ALNUM);
+ } else if (ispunct(*dot)) { // we are on PUNCT
+ dot = skip_thing(dot, 1, FORWARD, S_END_PUNCT);
+ }
+ if (dot < end - 1)
+ dot++; // move over word
+ if (isspace(*dot)) {
+ dot = skip_thing(dot, 2, FORWARD, S_OVER_WS);
+ }
+ } while (--cmdcnt > 0);
break;
case 'z': // z-
c1 = get_one_char(); // get the replacement char
dot = move_to_col(dot, cmdcnt - 1); // try to move to column
break;
case '~': // ~- flip the case of letters a-z -> A-Z
- if (cmdcnt-- > 1) {
- do_cmd(c);
- } // repeat cnt
- if (islower(*dot)) {
- *dot = toupper(*dot);
- file_modified++;
- } else if (isupper(*dot)) {
- *dot = tolower(*dot);
- file_modified++;
- }
- dot_right();
+ do {
+#if ENABLE_FEATURE_VI_UNDO
+ if (islower(*dot)) {
+ undo_push(dot, 1, UNDO_DEL);
+ *dot = toupper(*dot);
+ undo_push(dot, 1, UNDO_INS_CHAIN);
+ } else if (isupper(*dot)) {
+ undo_push(dot, 1, UNDO_DEL);
+ *dot = tolower(*dot);
+ undo_push(dot, 1, UNDO_INS_CHAIN);
+ }
+#else
+ if (islower(*dot)) {
+ *dot = toupper(*dot);
+ modified_count++;
+ } else if (isupper(*dot)) {
+ *dot = tolower(*dot);
+ modified_count++;
+ }
+#endif
+ dot_right();
+ } while (--cmdcnt > 0);
end_cmd_q(); // stop adding to q
break;
//----- The Cursor and Function Keys -----------------------------
dc1:
// if text[] just became empty, add back an empty line
if (end == text) {
- char_insert(text, '\n'); // start empty buf with dummy line
+ char_insert(text, '\n', NO_UNDO); // start empty buf with dummy line
dot = text;
}
// it is OK for dot to exactly equal to end, otherwise check dot validity
cmd1 = " \n\r\002\004\005\006\025\0310^$-+wWeEbBhjklHL";
// is there already a command running?
- if (chars_to_parse > 0)
+ if (readbuffer[0] > 0)
goto cd1;
cd0:
- startrbi = rbi = 0;
+ readbuffer[0] = 'X';
+ startrbi = rbi = 1;
sleeptime = 0; // how long to pause between commands
memset(readbuffer, '\0', sizeof(readbuffer));
// generate a command by percentages
}
strcat(readbuffer, "\033");
}
- chars_to_parse = strlen(readbuffer);
+ readbuffer[0] = strlen(readbuffer + 1);
cd1:
totalcmds++;
if (sleeptime > 0)
if (msg[0]) {
printf("\n\n%d: \'%c\' %s\n\n\n%s[Hit return to continue]%s",
- totalcmds, last_input_char, msg, SOs, SOn);
- fflush(stdout);
+ totalcmds, last_input_char, msg, ESC_BOLD_TEXT, ESC_NORM_TEXT);
+ fflush_all();
while (safe_read(STDIN_FILENO, d, 1) > 0) {
if (d[0] == '\n' || d[0] == '\r')
break;
projects / oweals / busybox.git / blobdiff