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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
commit | 2aa4a82499d4becd2284cdb482213d541b8804dd (patch) | |
tree | b80bf8bf13c3766139fbacc530efd0dd9d54394c /js/src/editline/editline.c | |
parent | Initial commit. (diff) | |
download | firefox-upstream.tar.xz firefox-upstream.zip |
Adding upstream version 86.0.1.upstream/86.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | js/src/editline/editline.c | 1341 |
1 files changed, 1341 insertions, 0 deletions
diff --git a/js/src/editline/editline.c b/js/src/editline/editline.c new file mode 100644 index 0000000000..8146bb82f3 --- /dev/null +++ b/js/src/editline/editline.c @@ -0,0 +1,1341 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/* + * Copyright 1992,1993 Simmule Turner and Rich Salz. All rights reserved. + * + * This software is not subject to any license of the American Telephone + * and Telegraph Company or of the Regents of the University of California. + * + * Permission is granted to anyone to use this software for any purpose on + * any computer system, and to alter it and redistribute it freely, subject + * to the following restrictions: + * 1. The authors are not responsible for the consequences of use of this + * software, no matter how awful, even if they arise from flaws in it. + * 2. The origin of this software must not be misrepresented, either by + * explicit claim or by omission. Since few users ever read sources, + * credits must appear in the documentation. + * 3. Altered versions must be plainly marked as such, and must not be + * misrepresented as being the original software. Since few users + * ever read sources, credits must appear in the documentation. + * 4. This notice may not be removed or altered. + */ + + +/* +** Main editing routines for editline library. +*/ +#include "editline.h" +#include <signal.h> +#include <ctype.h> +#include <unistd.h> + +/* +** Manifest constants. +*/ +#define SCREEN_WIDTH 80 +#define SCREEN_ROWS 24 +#define NO_ARG (-1) +#define DEL 127 +#define CTL(x) ((x) & 0x1F) +#define ISCTL(x) ((x) && (x) < ' ') +#define UNCTL(x) ((x) + 64) +#define META(x) ((x) | 0x80) +#define ISMETA(x) ((x) & 0x80) +#define UNMETA(x) ((x) & 0x7F) +#if !defined(HIST_SIZE) +#define HIST_SIZE 20 +#endif /* !defined(HIST_SIZE) */ + +/* +** Command status codes. +*/ +typedef enum _STATUS { + CSdone, CSeof, CSmove, CSdispatch, CSstay, CSsignal +} STATUS; + +/* +** The type of case-changing to perform. +*/ +typedef enum _CASE { + TOupper, TOlower +} CASE; + +/* +** Key to command mapping. +*/ +typedef struct _KEYMAP { + CHAR Key; + STATUS (*Function)(); +} KEYMAP; + +/* +** Command history structure. +*/ +typedef struct _HISTORY { + int Size; + int Pos; + CHAR *Lines[HIST_SIZE]; +} HISTORY; + +/* +** Globals. +*/ +unsigned rl_eof; +unsigned rl_erase; +unsigned rl_intr; +unsigned rl_kill; +unsigned rl_quit; + +STATIC CHAR NIL[] = ""; +STATIC CONST CHAR *Input = NIL; +STATIC CHAR *Line; +STATIC CONST char *Prompt; +STATIC CHAR *Yanked; +STATIC char *Screen; +STATIC CONST char NEWLINE[]= CRLF; +STATIC HISTORY H; +STATIC int Repeat; +STATIC int End; +STATIC int Mark; +STATIC int OldPoint; +STATIC int Point; +STATIC int PushBack; +STATIC int Pushed; +STATIC int Signal; +FORWARD CONST KEYMAP Map[32]; +FORWARD CONST KEYMAP MetaMap[16]; +STATIC SIZE_T Length; +STATIC SIZE_T ScreenCount; +STATIC SIZE_T ScreenSize; +STATIC char *backspace; +STATIC int TTYwidth; +STATIC int TTYrows; + +/* Display print 8-bit chars as `M-x' or as the actual 8-bit char? */ +int rl_meta_chars = 0; + +/* +** Declarations. +*/ +STATIC CHAR *editinput(); +#if defined(USE_TERMCAP) +#include <stdlib.h> +#include <curses.h> +#include <term.h> +#endif /* defined(USE_TERMCAP) */ + +/* +** TTY input/output functions. +*/ + +STATIC void +TTYflush() +{ + if (ScreenCount) { + /* Dummy assignment avoids GCC warning on + * "attribute warn_unused_result" */ + ssize_t dummy = write(1, Screen, ScreenCount); + (void)dummy; + ScreenCount = 0; + } +} + +STATIC void +TTYput(c) + CHAR c; +{ + Screen[ScreenCount] = c; + if (++ScreenCount >= ScreenSize - 1) { + ScreenSize += SCREEN_INC; + RENEW(Screen, char, ScreenSize); + } +} + +STATIC void +TTYputs(p) + CONST CHAR *p; +{ + while (*p) + TTYput(*p++); +} + +STATIC void +TTYshow(c) + CHAR c; +{ + if (c == DEL) { + TTYput('^'); + TTYput('?'); + } + else if (ISCTL(c)) { + TTYput('^'); + TTYput(UNCTL(c)); + } + else if (rl_meta_chars && ISMETA(c)) { + TTYput('M'); + TTYput('-'); + TTYput(UNMETA(c)); + } + else + TTYput(c); +} + +STATIC void +TTYstring(p) + CHAR *p; +{ + while (*p) + TTYshow(*p++); +} + +STATIC unsigned int +TTYget() +{ + CHAR c; + + TTYflush(); + if (Pushed) { + Pushed = 0; + return PushBack; + } + if (*Input) + return *Input++; + return read(0, &c, (SIZE_T)1) == 1 ? c : EOF; +} + +#define TTYback() (backspace ? TTYputs((CHAR *)backspace) : TTYput('\b')) + +STATIC void +TTYbackn(n) + int n; +{ + while (--n >= 0) + TTYback(); +} + +STATIC void +TTYinfo() +{ + static int init; +#if defined(USE_TERMCAP) + char *term; + char buff[2048]; + char *bp, *p; +#endif /* defined(USE_TERMCAP) */ +#if defined(TIOCGWINSZ) + struct winsize W; +#endif /* defined(TIOCGWINSZ) */ + + if (init) { +#if defined(TIOCGWINSZ) + /* Perhaps we got resized. */ + if (ioctl(0, TIOCGWINSZ, &W) >= 0 + && W.ws_col > 0 && W.ws_row > 0) { + TTYwidth = (int)W.ws_col; + TTYrows = (int)W.ws_row; + } +#endif /* defined(TIOCGWINSZ) */ + return; + } + init++; + + TTYwidth = TTYrows = 0; +#if defined(USE_TERMCAP) + bp = &buff[0]; + if ((term = getenv("TERM")) == NULL) + term = "dumb"; + if (tgetent(buff, term) < 0) { + TTYwidth = SCREEN_WIDTH; + TTYrows = SCREEN_ROWS; + return; + } + p = tgetstr("le", &bp); + backspace = p ? strdup(p) : NULL; + TTYwidth = tgetnum("co"); + TTYrows = tgetnum("li"); +#endif /* defined(USE_TERMCAP) */ + +#if defined(TIOCGWINSZ) + if (ioctl(0, TIOCGWINSZ, &W) >= 0) { + TTYwidth = (int)W.ws_col; + TTYrows = (int)W.ws_row; + } +#endif /* defined(TIOCGWINSZ) */ + + if (TTYwidth <= 0 || TTYrows <= 0) { + TTYwidth = SCREEN_WIDTH; + TTYrows = SCREEN_ROWS; + } +} + + +STATIC void +reposition() +{ + int i; + CHAR *p; + + TTYput('\r'); + TTYputs((CONST CHAR *)Prompt); + for (i = Point, p = Line; --i >= 0; p++) + TTYshow(*p); +} + +STATIC void +left(Change) + STATUS Change; +{ + TTYback(); + if (Point) { + if (ISCTL(Line[Point - 1])) + TTYback(); + else if (rl_meta_chars && ISMETA(Line[Point - 1])) { + TTYback(); + TTYback(); + } + } + if (Change == CSmove) + Point--; +} + +STATIC void +right(Change) + STATUS Change; +{ + TTYshow(Line[Point]); + if (Change == CSmove) + Point++; +} + +STATIC STATUS +ring_bell() +{ + TTYput('\07'); + TTYflush(); + return CSstay; +} + +STATIC STATUS +do_macro(c) + unsigned int c; +{ + CHAR name[4]; + + name[0] = '_'; + name[1] = c; + name[2] = '_'; + name[3] = '\0'; + + if ((Input = (CHAR *)getenv((char *)name)) == NULL) { + Input = NIL; + return ring_bell(); + } + return CSstay; +} + +STATIC STATUS +do_forward(move) + STATUS move; +{ + int i; + CHAR *p; + + i = 0; + do { + p = &Line[Point]; + for ( ; Point < End && (*p == ' ' || !isalnum(*p)); Point++, p++) + if (move == CSmove) + right(CSstay); + + for (; Point < End && isalnum(*p); Point++, p++) + if (move == CSmove) + right(CSstay); + + if (Point == End) + break; + } while (++i < Repeat); + + return CSstay; +} + +STATIC STATUS +do_case(type) + CASE type; +{ + int i; + int end; + int count; + CHAR *p; + + (void)do_forward(CSstay); + if (OldPoint != Point) { + if ((count = Point - OldPoint) < 0) + count = -count; + Point = OldPoint; + if ((end = Point + count) > End) + end = End; + for (i = Point, p = &Line[i]; i < end; i++, p++) { + if (type == TOupper) { + if (islower(*p)) + *p = toupper(*p); + } + else if (isupper(*p)) + *p = tolower(*p); + right(CSmove); + } + } + return CSstay; +} + +STATIC STATUS +case_down_word() +{ + return do_case(TOlower); +} + +STATIC STATUS +case_up_word() +{ + return do_case(TOupper); +} + +STATIC void +ceol() +{ + int extras; + int i; + CHAR *p; + + for (extras = 0, i = Point, p = &Line[i]; i <= End; i++, p++) { + TTYput(' '); + if (ISCTL(*p)) { + TTYput(' '); + extras++; + } + else if (rl_meta_chars && ISMETA(*p)) { + TTYput(' '); + TTYput(' '); + extras += 2; + } + } + + for (i += extras; i > Point; i--) + TTYback(); +} + +STATIC void +clear_line() +{ + Point = -strlen(Prompt); + TTYput('\r'); + ceol(); + Point = 0; + End = 0; + Line[0] = '\0'; +} + +STATIC STATUS +insert_string(p) + CHAR *p; +{ + SIZE_T len; + int i; + CHAR *new; + CHAR *q; + + len = strlen((char *)p); + if (End + len >= Length) { + if ((new = NEW(CHAR, Length + len + MEM_INC)) == NULL) + return CSstay; + if (Length) { + COPYFROMTO(new, Line, Length); + DISPOSE(Line); + } + Line = new; + Length += len + MEM_INC; + } + + for (q = &Line[Point], i = End - Point; --i >= 0; ) + q[len + i] = q[i]; + COPYFROMTO(&Line[Point], p, len); + End += len; + Line[End] = '\0'; + TTYstring(&Line[Point]); + Point += len; + + return Point == End ? CSstay : CSmove; +} + +STATIC STATUS +redisplay() +{ + TTYputs((CONST CHAR *)NEWLINE); + TTYputs((CONST CHAR *)Prompt); + TTYstring(Line); + return CSmove; +} + +STATIC STATUS +toggle_meta_mode() +{ + rl_meta_chars = ! rl_meta_chars; + return redisplay(); +} + + +STATIC CHAR * +next_hist() +{ + return H.Pos >= H.Size - 1 ? NULL : H.Lines[++H.Pos]; +} + +STATIC CHAR * +prev_hist() +{ + return H.Pos == 0 ? NULL : H.Lines[--H.Pos]; +} + +STATIC STATUS +do_insert_hist(p) + CHAR *p; +{ + if (p == NULL) + return ring_bell(); + Point = 0; + reposition(); + ceol(); + End = 0; + return insert_string(p); +} + +STATIC STATUS +do_hist(move) + CHAR *(*move)(); +{ + CHAR *p; + int i; + + i = 0; + do { + if ((p = (*move)()) == NULL) + return ring_bell(); + } while (++i < Repeat); + return do_insert_hist(p); +} + +STATIC STATUS +h_next() +{ + return do_hist(next_hist); +} + +STATIC STATUS +h_prev() +{ + return do_hist(prev_hist); +} + +STATIC STATUS +h_first() +{ + return do_insert_hist(H.Lines[H.Pos = 0]); +} + +STATIC STATUS +h_last() +{ + return do_insert_hist(H.Lines[H.Pos = H.Size - 1]); +} + +/* +** Return zero if pat appears as a substring in text. +*/ +STATIC int +substrcmp(text, pat, len) + char *text; + char *pat; + int len; +{ + char c; + + if ((c = *pat) == '\0') + return *text == '\0'; + for ( ; *text; text++) + if (*text == c && strncmp(text, pat, len) == 0) + return 0; + return 1; +} + +STATIC CHAR * +search_hist(search, move) + CHAR *search; + CHAR *(*move)(); +{ + static CHAR *old_search; + int len; + int pos; + int (*match)(); + char *pat; + + /* Save or get remembered search pattern. */ + if (search && *search) { + if (old_search) + DISPOSE(old_search); + old_search = (CHAR *)strdup((char *)search); + } + else { + if (old_search == NULL || *old_search == '\0') + return NULL; + search = old_search; + } + + /* Set up pattern-finder. */ + if (*search == '^') { + match = strncmp; + pat = (char *)(search + 1); + } + else { + match = substrcmp; + pat = (char *)search; + } + len = strlen(pat); + + for (pos = H.Pos; (*move)() != NULL; ) + if ((*match)((char *)H.Lines[H.Pos], pat, len) == 0) + return H.Lines[H.Pos]; + H.Pos = pos; + return NULL; +} + +STATIC STATUS +h_search() +{ + static int Searching; + CONST char *old_prompt; + CHAR *(*move)(); + CHAR *p; + + if (Searching) + return ring_bell(); + Searching = 1; + + clear_line(); + old_prompt = Prompt; + Prompt = "Search: "; + TTYputs((CONST CHAR *)Prompt); + move = Repeat == NO_ARG ? prev_hist : next_hist; + p = editinput(); + Prompt = old_prompt; + Searching = 0; + TTYputs((CONST CHAR *)Prompt); + if (p == NULL && Signal > 0) { + Signal = 0; + clear_line(); + return redisplay(); + } + p = search_hist(p, move); + clear_line(); + if (p == NULL) { + (void)ring_bell(); + return redisplay(); + } + return do_insert_hist(p); +} + +STATIC STATUS +fd_char() +{ + int i; + + i = 0; + do { + if (Point >= End) + break; + right(CSmove); + } while (++i < Repeat); + return CSstay; +} + +STATIC void +save_yank(begin, i) + int begin; + int i; +{ + if (Yanked) { + DISPOSE(Yanked); + Yanked = NULL; + } + + if (i < 1) + return; + + if ((Yanked = NEW(CHAR, (SIZE_T)i + 1)) != NULL) { + COPYFROMTO(Yanked, &Line[begin], i); + Yanked[i] = '\0'; + } +} + +STATIC STATUS +delete_string(count) + int count; +{ + int i; + CHAR *p; + + if (count <= 0 || End == Point) + return ring_bell(); + + if (count == 1 && Point == End - 1) { + /* Optimize common case of delete at end of line. */ + End--; + p = &Line[Point]; + i = 1; + TTYput(' '); + if (ISCTL(*p)) { + i = 2; + TTYput(' '); + } + else if (rl_meta_chars && ISMETA(*p)) { + i = 3; + TTYput(' '); + TTYput(' '); + } + TTYbackn(i); + *p = '\0'; + return CSmove; + } + if (Point + count > End && (count = End - Point) <= 0) + return CSstay; + + if (count > 1) + save_yank(Point, count); + + for (p = &Line[Point], i = End - (Point + count) + 1; --i >= 0; p++) + p[0] = p[count]; + ceol(); + End -= count; + TTYstring(&Line[Point]); + return CSmove; +} + +STATIC STATUS +bk_char() +{ + int i; + + i = 0; + do { + if (Point == 0) + break; + left(CSmove); + } while (++i < Repeat); + + return CSstay; +} + +STATIC STATUS +bk_del_char() +{ + int i; + + i = 0; + do { + if (Point == 0) + break; + left(CSmove); + } while (++i < Repeat); + + return delete_string(i); +} + +STATIC STATUS +kill_line() +{ + int i; + + if (Repeat != NO_ARG) { + if (Repeat < Point) { + i = Point; + Point = Repeat; + reposition(); + (void)delete_string(i - Point); + } + else if (Repeat > Point) { + right(CSmove); + (void)delete_string(Repeat - Point - 1); + } + return CSmove; + } + + save_yank(Point, End - Point); + Line[Point] = '\0'; + ceol(); + End = Point; + return CSstay; +} + +STATIC STATUS +insert_char(c) + int c; +{ + STATUS s; + CHAR buff[2]; + CHAR *p; + CHAR *q; + int i; + + if (Repeat == NO_ARG || Repeat < 2) { + buff[0] = c; + buff[1] = '\0'; + return insert_string(buff); + } + + if ((p = NEW(CHAR, Repeat + 1)) == NULL) + return CSstay; + for (i = Repeat, q = p; --i >= 0; ) + *q++ = c; + *q = '\0'; + Repeat = 0; + s = insert_string(p); + DISPOSE(p); + return s; +} + +STATIC STATUS +meta() +{ + unsigned int c; + CONST KEYMAP *kp; + + if ((int)(c = TTYget()) == EOF) + return CSeof; +#if defined(ANSI_ARROWS) + /* Also include VT-100 arrows. */ + if (c == '[' || c == 'O') + switch (c = TTYget()) { + default: return ring_bell(); + case EOF: return CSeof; + case 'A': return h_prev(); + case 'B': return h_next(); + case 'C': return fd_char(); + case 'D': return bk_char(); + } +#endif /* defined(ANSI_ARROWS) */ + + if (isdigit(c)) { + for (Repeat = c - '0'; (int)(c = TTYget()) != EOF && isdigit(c); ) + Repeat = Repeat * 10 + c - '0'; + Pushed = 1; + PushBack = c; + return CSstay; + } + + if (isupper(c)) + return do_macro(c); + for (OldPoint = Point, kp = MetaMap; kp->Function; kp++) + if (kp->Key == c) + return (*kp->Function)(); + + return ring_bell(); +} + +STATIC STATUS +emacs(c) + unsigned int c; +{ + STATUS s; + const KEYMAP *kp; + + if (rl_meta_chars && ISMETA(c)) { + Pushed = 1; + PushBack = UNMETA(c); + return meta(); + } + for (kp = Map; kp->Function; kp++) + if (kp->Key == c) + break; + s = kp->Function ? (*kp->Function)() : insert_char((int)c); + if (!Pushed) + /* No pushback means no repeat count; hacky, but true. */ + Repeat = NO_ARG; + return s; +} + +STATIC STATUS +TTYspecial(c) + unsigned int c; +{ + if (ISMETA(c)) + return CSdispatch; + + if (c == rl_erase || (int)c == DEL) + return bk_del_char(); + if (c == rl_kill) { + if (Point != 0) { + Point = 0; + reposition(); + } + Repeat = NO_ARG; + return kill_line(); + } + if (c == rl_eof && Point == 0 && End == 0) + return CSeof; + if (c == rl_intr) { + Signal = SIGINT; + return CSsignal; + } + if (c == rl_quit) { + Signal = SIGQUIT; + return CSeof; + } + + return CSdispatch; +} + +STATIC CHAR * +editinput() +{ + unsigned int c; + + Repeat = NO_ARG; + OldPoint = Point = Mark = End = 0; + Line[0] = '\0'; + + Signal = -1; + while ((int)(c = TTYget()) != EOF) + switch (TTYspecial(c)) { + case CSdone: + return Line; + case CSeof: + return NULL; + case CSsignal: + return (CHAR *)""; + case CSmove: + reposition(); + break; + case CSdispatch: + switch (emacs(c)) { + case CSdone: + return Line; + case CSeof: + return NULL; + case CSsignal: + return (CHAR *)""; + case CSmove: + reposition(); + break; + case CSdispatch: + case CSstay: + break; + } + break; + case CSstay: + break; + } + if (strlen((char *)Line)) + return Line; + free(Line); + return NULL; +} + +STATIC void +hist_add(p) + CHAR *p; +{ + int i; + + if ((p = (CHAR *)strdup((char *)p)) == NULL) + return; + if (H.Size < HIST_SIZE) + H.Lines[H.Size++] = p; + else { + DISPOSE(H.Lines[0]); + for (i = 0; i < HIST_SIZE - 1; i++) + H.Lines[i] = H.Lines[i + 1]; + H.Lines[i] = p; + } + H.Pos = H.Size - 1; +} + +/* +** For compatibility with FSF readline. +*/ +/* ARGSUSED0 */ +void +rl_reset_terminal(p) + char *p; +{ + (void)p; +} + +void +rl_initialize() +{ +} + +char * +readline(prompt) + CONST char *prompt; +{ + CHAR *line; + int s; + + if (Line == NULL) { + Length = MEM_INC; + if ((Line = NEW(CHAR, Length)) == NULL) + return NULL; + } + + TTYinfo(); + rl_ttyset(0); + hist_add(NIL); + ScreenSize = SCREEN_INC; + Screen = NEW(char, ScreenSize); + Prompt = prompt ? prompt : (char *)NIL; + TTYputs((CONST CHAR *)Prompt); + if ((line = editinput()) != NULL) { + line = (CHAR *)strdup((char *)line); + TTYputs((CONST CHAR *)NEWLINE); + TTYflush(); + } + rl_ttyset(1); + DISPOSE(Screen); + DISPOSE(H.Lines[--H.Size]); + if (Signal > 0) { + s = Signal; + Signal = 0; + (void)kill(getpid(), s); + } + return (char *)line; +} + +void +add_history(p) + char *p; +{ + if (p == NULL || *p == '\0') + return; + +#if defined(UNIQUE_HISTORY) + if (H.Size && strcmp(p, (char *)H.Lines[H.Size - 1]) == 0) + return; +#endif /* defined(UNIQUE_HISTORY) */ + hist_add((CHAR *)p); +} + + +STATIC STATUS +beg_line() +{ + if (Point) { + Point = 0; + return CSmove; + } + return CSstay; +} + +STATIC STATUS +del_char() +{ + return delete_string(Repeat == NO_ARG ? 1 : Repeat); +} + +STATIC STATUS +end_line() +{ + if (Point != End) { + Point = End; + return CSmove; + } + return CSstay; +} + +STATIC STATUS +accept_line() +{ + Line[End] = '\0'; + return CSdone; +} + +STATIC STATUS +transpose() +{ + CHAR c; + + if (Point) { + if (Point == End) + left(CSmove); + c = Line[Point - 1]; + left(CSstay); + Line[Point - 1] = Line[Point]; + TTYshow(Line[Point - 1]); + Line[Point++] = c; + TTYshow(c); + } + return CSstay; +} + +STATIC STATUS +quote() +{ + unsigned int c; + + return (int)(c = TTYget()) == EOF ? CSeof : insert_char((int)c); +} + +STATIC STATUS +wipe() +{ + int i; + + if (Mark > End) + return ring_bell(); + + if (Point > Mark) { + i = Point; + Point = Mark; + Mark = i; + reposition(); + } + + return delete_string(Mark - Point); +} + +STATIC STATUS +mk_set() +{ + Mark = Point; + return CSstay; +} + +STATIC STATUS +exchange() +{ + unsigned int c; + + if ((c = TTYget()) != CTL('X')) + return (int)c == EOF ? CSeof : ring_bell(); + + if ((int)(c = Mark) <= End) { + Mark = Point; + Point = c; + return CSmove; + } + return CSstay; +} + +STATIC STATUS +yank() +{ + if (Yanked && *Yanked) + return insert_string(Yanked); + return CSstay; +} + +STATIC STATUS +copy_region() +{ + if (Mark > End) + return ring_bell(); + + if (Point > Mark) + save_yank(Mark, Point - Mark); + else + save_yank(Point, Mark - Point); + + return CSstay; +} + +STATIC STATUS +move_to_char() +{ + unsigned int c; + int i; + CHAR *p; + + if ((int)(c = TTYget()) == EOF) + return CSeof; + for (i = Point + 1, p = &Line[i]; i < End; i++, p++) + if (*p == c) { + Point = i; + return CSmove; + } + return CSstay; +} + +STATIC STATUS +fd_word() +{ + return do_forward(CSmove); +} + +STATIC STATUS +fd_kill_word() +{ + int i; + + (void)do_forward(CSstay); + if (OldPoint != Point) { + i = Point - OldPoint; + Point = OldPoint; + return delete_string(i); + } + return CSstay; +} + +STATIC STATUS +bk_word() +{ + int i; + CHAR *p; + + i = 0; + do { + for (p = &Line[Point]; p > Line && !isalnum(p[-1]); p--) + left(CSmove); + + for (; p > Line && p[-1] != ' ' && isalnum(p[-1]); p--) + left(CSmove); + + if (Point == 0) + break; + } while (++i < Repeat); + + return CSstay; +} + +STATIC STATUS +bk_kill_word() +{ + (void)bk_word(); + if (OldPoint != Point) + return delete_string(OldPoint - Point); + return CSstay; +} + +STATIC int +argify(line, avp) + CHAR *line; + CHAR ***avp; +{ + CHAR *c; + CHAR **p; + CHAR **new; + int ac; + int i; + + i = MEM_INC; + if ((*avp = p = NEW(CHAR*, i))== NULL) + return 0; + + for (c = line; isspace(*c); c++) + continue; + if (*c == '\n' || *c == '\0') + return 0; + + for (ac = 0, p[ac++] = c; *c && *c != '\n'; ) { + if (isspace(*c)) { + *c++ = '\0'; + if (*c && *c != '\n') { + if (ac + 1 == i) { + new = NEW(CHAR*, i + MEM_INC); + if (new == NULL) { + p[ac] = NULL; + return ac; + } + COPYFROMTO(new, p, i * sizeof (char **)); + i += MEM_INC; + DISPOSE(p); + *avp = p = new; + } + p[ac++] = c; + } + } + else + c++; + } + *c = '\0'; + p[ac] = NULL; + return ac; +} + +STATIC STATUS +last_argument() +{ + CHAR **av; + CHAR *p; + STATUS s; + int ac; + + if (H.Size == 1 || (p = H.Lines[H.Size - 2]) == NULL) + return ring_bell(); + + if ((p = (CHAR *)strdup((char *)p)) == NULL) + return CSstay; + ac = argify(p, &av); + + if (Repeat != NO_ARG) + s = Repeat < ac ? insert_string(av[Repeat]) : ring_bell(); + else + s = ac ? insert_string(av[ac - 1]) : CSstay; + + if (ac) + DISPOSE(av); + DISPOSE(p); + return s; +} + +STATIC CONST KEYMAP Map[32] = { + { CTL('@'), ring_bell }, + { CTL('A'), beg_line }, + { CTL('B'), bk_char }, + { CTL('D'), del_char }, + { CTL('E'), end_line }, + { CTL('F'), fd_char }, + { CTL('G'), ring_bell }, + { CTL('H'), bk_del_char }, + { CTL('J'), accept_line }, + { CTL('K'), kill_line }, + { CTL('L'), redisplay }, + { CTL('M'), accept_line }, + { CTL('N'), h_next }, + { CTL('O'), ring_bell }, + { CTL('P'), h_prev }, + { CTL('Q'), ring_bell }, + { CTL('R'), h_search }, + { CTL('S'), ring_bell }, + { CTL('T'), transpose }, + { CTL('U'), ring_bell }, + { CTL('V'), quote }, + { CTL('W'), wipe }, + { CTL('X'), exchange }, + { CTL('Y'), yank }, + { CTL('Z'), ring_bell }, + { CTL('['), meta }, + { CTL(']'), move_to_char }, + { CTL('^'), ring_bell }, + { CTL('_'), ring_bell }, + { 0, NULL } +}; + +STATIC CONST KEYMAP MetaMap[16]= { + { CTL('H'), bk_kill_word }, + { DEL, bk_kill_word }, + { ' ', mk_set }, + { '.', last_argument }, + { '<', h_first }, + { '>', h_last }, + { 'b', bk_word }, + { 'd', fd_kill_word }, + { 'f', fd_word }, + { 'l', case_down_word }, + { 'm', toggle_meta_mode }, + { 'u', case_up_word }, + { 'y', yank }, + { 'w', copy_region }, + { 0, NULL } +}; + |