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author | Mystery Man <unknown@mandriva.org> | 2002-07-08 07:45:08 +0000 |
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committer | Mystery Man <unknown@mandriva.org> | 2002-07-08 07:45:08 +0000 |
commit | be128d0615965c467107adeb2c8cecd1125318a1 (patch) | |
tree | 998f5b6803ad85a1411491ef4c499fa8b9760bb2 /mdk-stage1/slang/slrline.c | |
parent | 9555bb791920e8feace953f90cf908e864451b59 (diff) | |
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This commit was manufactured by cvs2svn to create tag 'V1_1_8_2mdk'.V1_1_8_2mdk
Diffstat (limited to 'mdk-stage1/slang/slrline.c')
-rw-r--r-- | mdk-stage1/slang/slrline.c | 836 |
1 files changed, 0 insertions, 836 deletions
diff --git a/mdk-stage1/slang/slrline.c b/mdk-stage1/slang/slrline.c deleted file mode 100644 index 1874be0bb..000000000 --- a/mdk-stage1/slang/slrline.c +++ /dev/null @@ -1,836 +0,0 @@ -/* SLang_read_line interface --- uses SLang tty stuff */ -/* Copyright (c) 1992, 1999, 2001 John E. Davis - * This file is part of the S-Lang library. - * - * You may distribute under the terms of either the GNU General Public - * License or the Perl Artistic License. - */ - -#include "slinclud.h" - -#include "slang.h" -#include "_slang.h" - -#ifdef REAL_UNIX_SYSTEM -int SLang_RL_EOF_Char = 4; -#else -int SLang_RL_EOF_Char = 26; -#endif - -int SLang_Rline_Quit; -static SLang_RLine_Info_Type *This_RLI; - -static unsigned char Char_Widths[256]; -static void position_cursor (int); - -static void rl_beep (void) -{ - putc(7, stdout); - fflush (stdout); -} - -/* editing functions */ -static int rl_bol (void) -{ - if (This_RLI->point == 0) return 0; - This_RLI->point = 0; - return 1; -} - -static int rl_eol (void) -{ - if (This_RLI->point == This_RLI->len) return 0; - This_RLI->point = This_RLI->len; - return 1; -} - -static int rl_right (void) -{ - if (This_RLI->point == This_RLI->len) return 0; - This_RLI->point++; - return 1; -} - -static int rl_left (void) -{ - if (This_RLI->point == 0) return 0; - This_RLI->point--; - return 1; -} - -static int rl_self_insert (void) -{ - unsigned char *pmin, *p; - - if (This_RLI->len == This_RLI->buf_len) - { - rl_beep (); - return 0; - } - - pmin = This_RLI->buf + This_RLI->point; - p = This_RLI->buf + This_RLI->len; - while (p > pmin) - { - *p = *(p - 1); - p--; - } - *pmin = SLang_Last_Key_Char; - - This_RLI->len++; - This_RLI->point++; - if ((This_RLI->curs_pos + 2 >= This_RLI->edit_width) - || (This_RLI->tt_insert == NULL) - || (Char_Widths[SLang_Last_Key_Char] != 1)) return 1; - - (*This_RLI->tt_insert)((char) SLang_Last_Key_Char); - /* update screen buf */ - p = This_RLI->old_upd + (This_RLI->len - 1); - pmin = This_RLI->old_upd + (This_RLI->point - 1); - while (p > pmin) - { - *p = *(p - 1); - p--; - } - *pmin = SLang_Last_Key_Char; - return 0; -} - -int SLang_rline_insert (char *s) -{ - unsigned char *pmin, *p; - int n; - - n = strlen (s); - if (n > This_RLI->buf_len - This_RLI->len) - n = This_RLI->buf_len - This_RLI->len; - - if (n == 0) return 0; - - pmin = This_RLI->buf + This_RLI->point; - p = This_RLI->buf + (This_RLI->len - 1); - - while (p >= pmin) - { - *(p + n) = *p; - p--; - } - SLMEMCPY ((char *) pmin, s, n); - - This_RLI->len += n; - This_RLI->point += n; - return n; -} - -static int rl_deln (int n) -{ - unsigned char *pmax, *p; - - p = This_RLI->buf + This_RLI->point; - pmax = This_RLI->buf + This_RLI->len; - - if (p + n > pmax) n = (int) (pmax - p); - while (p < pmax) - { - *p = *(p + n); - p++; - } - This_RLI->len -= n; - return n; -} - -static int rl_del (void) -{ - return rl_deln(1); -} - -static int rl_quote_insert (void) -{ - int err = SLang_Error; - SLang_Error = 0; - SLang_Last_Key_Char = (*This_RLI->getkey)(); - rl_self_insert (); - if (SLang_Error == SL_USER_BREAK) SLang_Error = 0; - else SLang_Error = err; - return 1; -} - -static int rl_trim (void) -{ - unsigned char *p, *pmax, *p1; - p = This_RLI->buf + This_RLI->point; - pmax = This_RLI->buf + This_RLI->len; - - if (p == pmax) - { - if (p == This_RLI->buf) return 0; - p--; - } - - if ((*p != ' ') && (*p != '\t')) return 0; - p1 = p; - while ((p1 < pmax) && ((*p1 == ' ') || (*p1 == '\t'))) p1++; - pmax = p1; - p1 = This_RLI->buf; - - while ((p >= p1) && ((*p == ' ') || (*p == '\t'))) p--; - if (p == pmax) return 0; - p++; - - This_RLI->point = (int) (p - p1); - return rl_deln ((int) (pmax - p)); -} - -static int rl_bdel (void) -{ - if (rl_left()) return rl_del(); - return 0; -} - -static int rl_deleol (void) -{ - if (This_RLI->point == This_RLI->len) return 0; - *(This_RLI->buf + This_RLI->point) = 0; - This_RLI->len = This_RLI->point; - return 1; -} - -static int rl_delete_line (void) -{ - This_RLI->point = 0; - *(This_RLI->buf + This_RLI->point) = 0; - This_RLI->len = 0; - return 1; -} - -static int rl_enter (void) -{ - *(This_RLI->buf + This_RLI->len) = 0; - SLang_Rline_Quit = 1; - return 1; -} - -static SLKeyMap_List_Type *RL_Keymap; - -/* This update is designed for dumb terminals. It assumes only that the - * terminal can backspace via ^H, and move cursor to start of line via ^M. - * There is a hook so the user can provide a more sophisticated update if - * necessary. - */ - -static void position_cursor (int col) -{ - unsigned char *p, *pmax; - int dc; - - if (col == This_RLI->curs_pos) - { - fflush (stdout); - return; - } - - if (This_RLI->tt_goto_column != NULL) - { - (*This_RLI->tt_goto_column)(col); - This_RLI->curs_pos = col; - fflush (stdout); - return; - } - - dc = This_RLI->curs_pos - col; - if (dc < 0) - { - p = This_RLI->new_upd + This_RLI->curs_pos; - pmax = This_RLI->new_upd + col; - while (p < pmax) putc((char) *p++, stdout); - } - else - { - if (dc < col) - { - while (dc--) putc(8, stdout); - } - else - { - putc('\r', stdout); - p = This_RLI->new_upd; - pmax = This_RLI->new_upd + col; - while (p < pmax) putc((char) *p++, stdout); - } - } - This_RLI->curs_pos = col; - fflush (stdout); -} - -static void erase_eol (SLang_RLine_Info_Type *rli) -{ - unsigned char *p, *pmax; - - p = rli->old_upd + rli->curs_pos; - pmax = rli->old_upd + rli->old_upd_len; - - while (p++ < pmax) putc(' ', stdout); - - rli->curs_pos = rli->old_upd_len; -} - -static unsigned char *spit_out(SLang_RLine_Info_Type *rli, unsigned char *p) -{ - unsigned char *pmax; - position_cursor ((int) (p - rli->new_upd)); - pmax = rli->new_upd + rli->new_upd_len; - while (p < pmax) putc((char) *p++, stdout); - rli->curs_pos = rli->new_upd_len; - return pmax; -} - -static void really_update (SLang_RLine_Info_Type *rli, int new_curs_position) -{ - unsigned char *b = rli->old_upd, *p = rli->new_upd, chb, chp; - unsigned char *pmax; - - if (rli->update_hook != NULL) - { - (*rli->update_hook)(p, rli->edit_width, new_curs_position); - } - else - { - pmax = p + rli->edit_width; - while (p < pmax) - { - chb = *b++; chp = *p++; - if (chb == chp) continue; - - if (rli->old_upd_len <= rli->new_upd_len) - { - /* easy one */ - (void) spit_out (rli, p - 1); - break; - } - spit_out(rli, p - 1); - erase_eol (rli); - break; - } - position_cursor (new_curs_position); - } - - /* update finished, so swap */ - - rli->old_upd_len = rli->new_upd_len; - p = rli->old_upd; - rli->old_upd = rli->new_upd; - rli->new_upd = p; -} - -static void RLupdate (SLang_RLine_Info_Type *rli) -{ - int len, dlen, start_len = 0, prompt_len = 0, tw = 0, count; - int want_cursor_pos; - unsigned char *b, chb, *b_point, *p; - int no_echo; - - no_echo = rli->flags & SL_RLINE_NO_ECHO; - - b_point = (unsigned char *) (rli->buf + rli->point); - *(rli->buf + rli->len) = 0; - - /* expand characters for output buffer --- handle prompt first. - * Do two passes --- first to find out where to begin upon horiz - * scroll and the second to actually fill the buffer. */ - len = 0; - count = 2; /* once for prompt and once for buf */ - - b = (unsigned char *) rli->prompt; - while (count--) - { - if ((count == 0) && no_echo) - break; - - /* The prompt could be NULL */ - if (b != NULL) while ((chb = *b) != 0) - { - /* This will ensure that the screen is scrolled a third of the edit - * width each time */ - if (b_point == b) break; - dlen = Char_Widths[chb]; - if ((chb == '\t') && tw) - { - dlen = tw * ((len - prompt_len) / tw + 1) - (len - prompt_len); - } - len += dlen; - b++; - } - tw = rli->tab; - b = (unsigned char *) rli->buf; - if (count == 1) want_cursor_pos = prompt_len = len; - } - - if (len < rli->edit_width - rli->dhscroll) start_len = 0; - else if ((rli->start_column > len) - || (rli->start_column + rli->edit_width <= len)) - { - start_len = len - (rli->edit_width - rli->dhscroll); - if (start_len < 0) start_len = 0; - } - else start_len = rli->start_column; - rli->start_column = start_len; - - want_cursor_pos = len - start_len; - - /* second pass */ - p = rli->new_upd; - - len = 0; - count = 2; - b = (unsigned char *) rli->prompt; - if (b == NULL) b = (unsigned char *) ""; - - while ((len < start_len) && (*b)) - { - len += Char_Widths[*b++]; - } - - tw = 0; - if (*b == 0) - { - b = (unsigned char *) rli->buf; - while (len < start_len) - { - len += Char_Widths[*b++]; - } - tw = rli->tab; - count--; - } - - len = 0; - while (count--) - { - if ((count == 0) && (no_echo)) - break; - - while ((len < rli->edit_width) && ((chb = *b++) != 0)) - { - dlen = Char_Widths[chb]; - if (dlen == 1) *p++ = chb; - else - { - if ((chb == '\t') && tw) - { - dlen = tw * ((len + start_len - prompt_len) / tw + 1) - (len + start_len - prompt_len); - len += dlen; /* ok since dlen comes out 0 */ - if (len > rli->edit_width) dlen = len - rli->edit_width; - while (dlen--) *p++ = ' '; - dlen = 0; - } - else - { - if (dlen == 3) - { - chb &= 0x7F; - *p++ = '~'; - } - - *p++ = '^'; - if (chb == 127) *p++ = '?'; - else *p++ = chb + '@'; - } - } - len += dlen; - } - /* if (start_len > prompt_len) break; */ - tw = rli->tab; - b = (unsigned char *) rli->buf; - } - - rli->new_upd_len = (int) (p - rli->new_upd); - while (p < rli->new_upd + rli->edit_width) *p++ = ' '; - really_update (rli, want_cursor_pos); -} - -void SLrline_redraw (SLang_RLine_Info_Type *rli) -{ - unsigned char *p = rli->new_upd; - unsigned char *pmax = p + rli->edit_width; - while (p < pmax) *p++ = ' '; - rli->new_upd_len = rli->edit_width; - really_update (rli, 0); - RLupdate (rli); -} - -static int rl_eof_insert (void) -{ - if (This_RLI->len == 0) - { - SLang_Last_Key_Char = SLang_RL_EOF_Char; - /* rl_self_insert (); */ - return rl_enter (); - } - return 0; -} - -/* This is very naive. It knows very little about nesting and nothing - * about quoting. - */ -static void blink_match (SLang_RLine_Info_Type *rli) -{ - unsigned char bra, ket; - unsigned int delta_column; - unsigned char *p, *pmin; - int dq_level, sq_level; - int level; - - pmin = rli->buf; - p = pmin + rli->point; - if (pmin == p) - return; - - ket = SLang_Last_Key_Char; - switch (ket) - { - case ')': - bra = '('; - break; - case ']': - bra = '['; - break; - case '}': - bra = '{'; - break; - default: - return; - } - - level = 0; - sq_level = dq_level = 0; - - delta_column = 0; - while (p > pmin) - { - char ch; - - p--; - delta_column++; - ch = *p; - - if (ch == ket) - { - if ((dq_level == 0) && (sq_level == 0)) - level++; - } - else if (ch == bra) - { - if ((dq_level != 0) || (sq_level != 0)) - continue; - - level--; - if (level == 0) - { - rli->point -= delta_column; - RLupdate (rli); - (*rli->input_pending)(10); - rli->point += delta_column; - RLupdate (rli); - break; - } - if (level < 0) - break; - } - else if (ch == '"') dq_level = !dq_level; - else if (ch == '\'') sq_level = !sq_level; - } -} - -int SLang_read_line (SLang_RLine_Info_Type *rli) -{ - unsigned char *p, *pmax; - SLang_Key_Type *key; - - SLang_Rline_Quit = 0; - This_RLI = rli; - p = rli->old_upd; pmax = p + rli->edit_width; - while (p < pmax) *p++ = ' '; - - /* Sanity checking */ - rli->len = strlen ((char *) rli->buf); - if (rli->len >= rli->buf_len) - { - rli->len = 0; - *rli->buf = 0; - } - if (rli->point > rli->len) rli->point = rli->len; - if (rli->point < 0) rli->point = 0; - - rli->curs_pos = rli->start_column = 0; - rli->new_upd_len = rli->old_upd_len = 0; - - This_RLI->last_fun = NULL; - if (rli->update_hook == NULL) - putc ('\r', stdout); - - RLupdate (rli); - - while (1) - { - key = SLang_do_key (RL_Keymap, (int (*)(void)) rli->getkey); - - if ((key == NULL) || (key->f.f == NULL)) - rl_beep (); - else - { - if ((SLang_Last_Key_Char == SLang_RL_EOF_Char) - && (*key->str == 2) - && (This_RLI->len == 0)) - rl_eof_insert (); - else if (key->type == SLKEY_F_INTRINSIC) - { - if ((key->f.f)()) - RLupdate (rli); - - if ((rli->flags & SL_RLINE_BLINK_MATCH) - && (rli->input_pending != NULL)) - blink_match (rli); - } - - if (SLang_Rline_Quit) - { - This_RLI->buf[This_RLI->len] = 0; - if (SLang_Error == SL_USER_BREAK) - { - SLang_Error = 0; - return -1; - } - return This_RLI->len; - } - } - if (key != NULL) - This_RLI->last_fun = key->f.f; - } -} - -static int rl_abort (void) -{ - rl_delete_line (); - return rl_enter (); -} - -/* TTY interface --- ANSI */ - -static void ansi_goto_column (int n) -{ - putc('\r', stdout); - if (n) fprintf(stdout, "\033[%dC", n); -} - -static void rl_select_line (SLang_Read_Line_Type *p) -{ - This_RLI->last = p; - strcpy ((char *) This_RLI->buf, (char *) p->buf); - This_RLI->point = This_RLI->len = strlen((char *) p->buf); -} -static int rl_next_line (void); -static int rl_prev_line (void) -{ - SLang_Read_Line_Type *prev; - - if (((This_RLI->last_fun != (FVOID_STAR) rl_prev_line) - && (This_RLI->last_fun != (FVOID_STAR) rl_next_line)) - || (This_RLI->last == NULL)) - { - prev = This_RLI->tail; - } - else prev = This_RLI->last->prev; - - if (prev == NULL) - { - rl_beep (); - return 0; - } - - rl_select_line (prev); - return 1; -} -static int rl_redraw (void) -{ - SLrline_redraw (This_RLI); - return 1; -} - -static int rl_next_line (void) -{ - SLang_Read_Line_Type *next; - - if (((This_RLI->last_fun != (FVOID_STAR) rl_prev_line) - && (This_RLI->last_fun != (FVOID_STAR) rl_next_line)) - || (This_RLI->last == NULL)) - { - rl_beep (); - return 0; - } - - next = This_RLI->last->next; - - if (next == NULL) - { - This_RLI->len = This_RLI->point = 0; - *This_RLI->buf = 0; - This_RLI->last = NULL; - } - else rl_select_line (next); - return 1; -} - -static SLKeymap_Function_Type SLReadLine_Functions[] = -{ - {"up", rl_prev_line}, - {"down", rl_next_line}, - {"bol", rl_bol}, - {"eol", rl_eol}, - {"right", rl_right}, - {"left", rl_left}, - {"self_insert", rl_self_insert}, - {"bdel", rl_bdel}, - {"del", rl_del}, - {"deleol", rl_deleol}, - {"enter", rl_enter}, - {"trim", rl_trim}, - {"quoted_insert", rl_quote_insert}, - {(char *) NULL, NULL} -}; - -int SLang_init_readline (SLang_RLine_Info_Type *rli) -{ - int ch; - char simple[2]; - - if (RL_Keymap == NULL) - { - simple[1] = 0; - if (NULL == (RL_Keymap = SLang_create_keymap ("ReadLine", NULL))) - return -1; - - RL_Keymap->functions = SLReadLine_Functions; - - /* This breaks under some DEC ALPHA compilers (scary!) */ -#ifndef __DECC - for (ch = ' '; ch < 256; ch++) - { - simple[0] = (char) ch; - SLkm_define_key (simple, (FVOID_STAR) rl_self_insert, RL_Keymap); - } -#else - ch = ' '; - while (1) - { - simple[0] = (char) ch; - SLkm_define_key (simple, (FVOID_STAR) rl_self_insert, RL_Keymap); - ch = ch + 1; - if (ch == 256) break; - } -#endif /* NOT __DECC */ - - simple[0] = SLang_Abort_Char; - SLkm_define_key (simple, (FVOID_STAR) rl_abort, RL_Keymap); - simple[0] = SLang_RL_EOF_Char; - SLkm_define_key (simple, (FVOID_STAR) rl_eof_insert, RL_Keymap); - -#ifndef IBMPC_SYSTEM - SLkm_define_key ("^[[A", (FVOID_STAR) rl_prev_line, RL_Keymap); - SLkm_define_key ("^[[B", (FVOID_STAR) rl_next_line, RL_Keymap); - SLkm_define_key ("^[[C", (FVOID_STAR) rl_right, RL_Keymap); - SLkm_define_key ("^[[D", (FVOID_STAR) rl_left, RL_Keymap); - SLkm_define_key ("^[OA", (FVOID_STAR) rl_prev_line, RL_Keymap); - SLkm_define_key ("^[OB", (FVOID_STAR) rl_next_line, RL_Keymap); - SLkm_define_key ("^[OC", (FVOID_STAR) rl_right, RL_Keymap); - SLkm_define_key ("^[OD", (FVOID_STAR) rl_left, RL_Keymap); -#else - SLkm_define_key ("^@H", (FVOID_STAR) rl_prev_line, RL_Keymap); - SLkm_define_key ("^@P", (FVOID_STAR) rl_next_line, RL_Keymap); - SLkm_define_key ("^@M", (FVOID_STAR) rl_right, RL_Keymap); - SLkm_define_key ("^@K", (FVOID_STAR) rl_left, RL_Keymap); - SLkm_define_key ("^@S", (FVOID_STAR) rl_del, RL_Keymap); - SLkm_define_key ("^@O", (FVOID_STAR) rl_eol, RL_Keymap); - SLkm_define_key ("^@G", (FVOID_STAR) rl_bol, RL_Keymap); - - SLkm_define_key ("\xE0H", (FVOID_STAR) rl_prev_line, RL_Keymap); - SLkm_define_key ("\xE0P", (FVOID_STAR) rl_next_line, RL_Keymap); - SLkm_define_key ("\xE0M", (FVOID_STAR) rl_right, RL_Keymap); - SLkm_define_key ("\xE0K", (FVOID_STAR) rl_left, RL_Keymap); - SLkm_define_key ("\xE0S", (FVOID_STAR) rl_del, RL_Keymap); - SLkm_define_key ("\xE0O", (FVOID_STAR) rl_eol, RL_Keymap); - SLkm_define_key ("\xE0G", (FVOID_STAR) rl_bol, RL_Keymap); -#endif - SLkm_define_key ("^C", (FVOID_STAR) rl_abort, RL_Keymap); - SLkm_define_key ("^E", (FVOID_STAR) rl_eol, RL_Keymap); - SLkm_define_key ("^G", (FVOID_STAR) rl_abort, RL_Keymap); - SLkm_define_key ("^I", (FVOID_STAR) rl_self_insert, RL_Keymap); - SLkm_define_key ("^A", (FVOID_STAR) rl_bol, RL_Keymap); - SLkm_define_key ("\r", (FVOID_STAR) rl_enter, RL_Keymap); - SLkm_define_key ("\n", (FVOID_STAR) rl_enter, RL_Keymap); - SLkm_define_key ("^K", (FVOID_STAR) rl_deleol, RL_Keymap); - SLkm_define_key ("^L", (FVOID_STAR) rl_deleol, RL_Keymap); - SLkm_define_key ("^V", (FVOID_STAR) rl_del, RL_Keymap); - SLkm_define_key ("^D", (FVOID_STAR) rl_del, RL_Keymap); - SLkm_define_key ("^F", (FVOID_STAR) rl_right, RL_Keymap); - SLkm_define_key ("^B", (FVOID_STAR) rl_left, RL_Keymap); - SLkm_define_key ("^?", (FVOID_STAR) rl_bdel, RL_Keymap); - SLkm_define_key ("^H", (FVOID_STAR) rl_bdel, RL_Keymap); - SLkm_define_key ("^P", (FVOID_STAR) rl_prev_line, RL_Keymap); - SLkm_define_key ("^N", (FVOID_STAR) rl_next_line, RL_Keymap); - SLkm_define_key ("^R", (FVOID_STAR) rl_redraw, RL_Keymap); - SLkm_define_key ("`", (FVOID_STAR) rl_quote_insert, RL_Keymap); - SLkm_define_key ("\033\\", (FVOID_STAR) rl_trim, RL_Keymap); - if (SLang_Error) return -1; - } - - if (rli->prompt == NULL) rli->prompt = ""; - if (rli->keymap == NULL) rli->keymap = RL_Keymap; - rli->old_upd = rli->upd_buf1; - rli->new_upd = rli->upd_buf2; - *rli->buf = 0; - rli->point = 0; - - if (rli->flags & SL_RLINE_USE_ANSI) - { - if (rli->tt_goto_column == NULL) rli->tt_goto_column = ansi_goto_column; - } - - if (Char_Widths[0] == 2) return 0; - - for (ch = 0; ch < 32; ch++) Char_Widths[ch] = 2; - for (ch = 32; ch < 256; ch++) Char_Widths[ch] = 1; - Char_Widths[127] = 2; -#ifndef IBMPC_SYSTEM - for (ch = 128; ch < 160; ch++) Char_Widths[ch] = 3; -#endif - - return 0; -} - -SLang_Read_Line_Type *SLang_rline_save_line (SLang_RLine_Info_Type *rli) -{ - SLang_Read_Line_Type *rl = NULL; - unsigned char *buf; - - if ((rli == NULL) || (rli->buf == NULL)) - return NULL; - - if (NULL == (rl = (SLang_Read_Line_Type *) SLmalloc (sizeof (SLang_Read_Line_Type))) - || (NULL == (buf = (unsigned char *) SLmake_string ((char *)rli->buf)))) - { - SLfree ((char *)rl); - return NULL; - } - rl->buf = buf; - rl->buf_len = strlen ((char *)buf); - rl->num = rl->misc = 0; - rl->next = rl->prev = NULL; - - if (rli->tail != NULL) - { - rli->tail->next = rl; - rl->prev = rli->tail; - } - rli->tail = rl; - - return rl; -} |