2 Bacula® - The Network Backup Solution
4 Copyright (C) 1981-2010 Free Software Foundation Europe e.V.
5 Yes, that is 1981 no error.
7 The main author of Bacula is Kern Sibbald, with contributions from
8 many others, a complete list can be found in the file AUTHORS.
9 This program is Free Software; you can redistribute it and/or
10 modify it under the terms of version two of the GNU General Public
11 License as published by the Free Software Foundation and included
14 This program is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
24 Bacula® is a registered trademark of Kern Sibbald.
25 The licensor of Bacula is the Free Software Foundation Europe
26 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
27 Switzerland, email:ftf@fsfeurope.org.
30 Generalized console input/output handler
31 A maintanable replacement for readline()
33 Updated for Bacula, Kern Sibbald, December MMIII
35 This code is in part derived from code that I wrote in
36 1981, so some of it is a bit old and could use a cleanup.
42 * If the top bit of a UTF-8 string is 0 (8 bits), then it
43 * is a normal ASCII character.
44 * If the top two bits are 11 (i.e. (c & 0xC0) == 0xC0 then
45 * it is the start of a series of chars (up to 5)
46 * Each subsequent character starts with 10 (i.e. (c & 0xC0) == 0x80)
59 /* We are in Bacula */
67 #if defined(HAVE_SUN_OS)
69 extern "C" int tgetent(void *, const char *);
70 extern "C" int tgetnum(const char *);
71 extern "C" char *tgetstr (const char*, char**);
73 extern "C" char *tgoto (const char *, int, int);
75 extern "C" int tgetent(char *, char *);
76 extern "C" int tgetnum(char id[2]);
77 extern "C" char *tgetstr(char id[2], char **);
78 extern "C" char *tgoto(char *, int, int);
79 #elif defined (__digital__) && defined (__unix__)
80 extern "C" int tgetent(void *, const char *);
81 extern "C" int tgetnum(const char *);
82 extern "C" char *tgetstr (const char*, char**);
83 extern "C" char *tgoto (const char *, int, int);
88 /* From termios library */
89 #if defined(HAVE_HPUX_OS) || defined(HAVE_AIX_OS)
97 /* Forward referenced functions */
99 static void sigintcatcher(int);
102 static void add_smap(char *str, int func);
105 /* Global variables */
107 static const char *t_up = "\n"; /* scroll up character */
108 static const char *t_honk = "\007"; /* sound beep */
109 static char *t_il; /* insert line */
110 static char *t_dl; /* delete line */
111 static char *t_cs; /* clear screen */
112 static char *t_cl; /* clear line */
113 static int t_width = 79; /* terminal width */
114 static int t_height = 24; /* terminal height */
115 static int linsdel_ok = 0; /* set if term has line insert & delete fncs */
117 static char *t_cm; /* cursor positioning */
118 static char *t_ti; /* init sequence */
119 static char *t_te; /* end sequence */
120 static char *t_do; /* down one line */
121 static char *t_sf; /* scroll screen one line up */
123 /* Keypad and Function Keys */
124 static char *kl; /* left key */
125 static char *kr; /* right */
126 static char *ku; /* up */
127 static char *kd; /* down */
128 static char *kh; /* home */
129 static char *kb; /* backspace */
130 static char *kD; /* delete key */
131 static char *kI; /* insert */
132 static char *kN; /* next page */
133 static char *kP; /* previous page */
134 static char *kH; /* home */
135 static char *kE; /* end */
138 #define EOS '\0' /* end of string terminator */
144 * Stab entry. Input chars (str), the length, and the desired
147 typedef struct s_stab {
156 static stab_t **stab = NULL; /* array of stabs by length */
157 static int num_stab; /* size of stab array */
159 static bool old_term_params_set = false;
160 static struct termios old_term_params;
162 /* Maintain lines in a doubly linked circular pool of lines. Each line is
163 preceded by a header defined by the lstr structure */
166 struct lstr { /* line pool structure */
167 struct lstr *prevl; /* link to previous line */
168 struct lstr *nextl; /* link to next line */
169 long len; /* length of line+header */
170 char used; /* set if line valid */
171 char line; /* line is actually varying length */
175 #define POOLEN 128000 /* bytes in line pool */
177 #define POOLEN 500 /* bytes in line pool */
179 char pool[POOLEN]; /* line pool */
180 #define PHDRL ((int)sizeof(struct lstr)) /* length of line header */
182 static struct lstr *lptr; /* current line pointer */
183 static struct lstr *slptr; /* store line pointer */
185 static char *getnext(), *getprev();
186 static int first = 1;
187 static int mode_insert = 1;
188 static int mode_wspace = 1; /* words separated by spaces */
191 static short char_map[600]= {
192 0, F_SOL, /* ^a Line start */
193 F_PRVWRD, /* ^b Previous word */ F_BREAK, /* ^C break */
194 F_DELCHR, /* ^D Delete character */ F_EOL, /* ^e End of line */
195 F_CSRRGT, /* ^f Right */ F_TABBAK, /* ^G Back tab */
196 F_CSRLFT, /* ^H Left */ F_TAB, /* ^I Tab */
197 F_CSRDWN, /* ^J Down */ F_DELEOL, /* ^K kill to eol */
198 F_CLRSCRN,/* ^L clear screen */ F_RETURN, /* ^M Carriage return */
199 F_RETURN, /* ^N enter line */ F_CONCAT, /* ^O Concatenate lines */
200 F_CSRUP, /* ^P cursor up */ F_TINS, /* ^Q Insert character mode */
201 F_PAGUP, /* ^R Page up */ F_CENTER, /* ^S Center text */
202 F_PAGDWN, /* ^T Page down */ F_DELSOL, /* ^U delete to start of line */
203 F_DELWRD, /* ^V Delete word */ F_PRVWRD, /* ^W Previous word */
204 F_NXTMCH, /* ^X Next match */ F_DELEOL, /* ^Y Delete to end of line */
205 F_BACKGND,/* ^Z Background */ 0x1B, /* ^[=ESC escape */
206 F_TENTRY, /* ^\ Entry mode */ F_PASTECB,/* ^]=paste clipboard */
207 F_HOME, /* ^^ Home */ F_ERSLIN, /* ^_ Erase line */
209 ' ','!','"','#','$','%','&','\047',
210 '(',')','*','+','\054','-','.','/',
211 '0','1','2','3','4','5','6','7',
212 '8','9',':',';','<','=','>','?',
213 '@','A','B','C','D','E','F','G',
214 'H','I','J','K','L','M','N','O',
215 'P','Q','R','S','T','U','V','W',
216 'X','Y','Z','[','\\',']','^','_',
217 '\140','a','b','c','d','e','f','g',
218 'h','i','j','k','l','m','n','o',
219 'p','q','r','s','t','u','v','w',
220 'x','y','z','{','|','}','\176',F_ERSCHR /* erase character */
225 /* Local variables */
227 #define CR '\r' /* carriage return */
230 /* Function Prototypes */
232 static unsigned int input_char(void);
233 static unsigned int t_gnc(void);
234 static void insert_space(char *curline, int line_len);
235 static void insert_hole(char *curline, int line_len);
236 static void forward(char *str, int str_len);
237 static void backup(char *curline);
238 static void delchr(int cnt, char *curline, int line_len);
239 static int iswordc(char c);
240 static int next_word(char *ldb_buf);
241 static int prev_word(char *ldb_buf);
242 static void prtcur(char *str);
243 static void poolinit(void);
244 static char * getnext(void);
245 static char * getprev(void);
246 static void putline(char *newl, int newlen);
247 static void t_honk_horn(void);
248 static void t_insert_line(void);
249 static void t_delete_line(void);
250 static void t_clrline(int pos, int width);
251 void t_sendl(const char *msg, int len);
252 void t_send(const char *msg);
254 static void asclrs();
255 static void ascurs(int y, int x);
257 static void rawmode(FILE *input);
258 static void normode(void);
259 static unsigned t_getch();
260 static void asclrl(int pos, int width);
261 static void asinsl();
262 static void asdell();
264 int input_line(char *string, int length);
272 void con_init(FILE *input)
282 void con_set_zed_keys(void)
284 char_map[1] = F_NXTWRD; /* ^A Next Word */
285 char_map[2] = F_SPLIT; /* ^B Split line */
286 char_map[3] = F_EOI; /* ^C Quit */
287 char_map[4] = F_DELCHR; /* ^D Delete character */
288 char_map[5] = F_EOF; /* ^E End of file */
289 char_map[6] = F_INSCHR; /* ^F Insert character */
290 char_map[7] = F_TABBAK; /* ^G Back tab */
291 char_map[8] = F_CSRLFT; /* ^H Left */
292 char_map[9] = F_TAB; /* ^I Tab */
293 char_map[10] = F_CSRDWN; /* ^J Down */
294 char_map[11] = F_CSRUP; /* ^K Up */
295 char_map[12] = F_CSRRGT; /* ^L Right */
296 char_map[13] = F_RETURN; /* ^M Carriage return */
297 char_map[14] = F_EOL; /* ^N End of line */
298 char_map[15] = F_CONCAT; /* ^O Concatenate lines */
299 char_map[16] = F_MARK; /* ^P Set marker */
300 char_map[17] = F_TINS; /* ^Q Insert character mode */
301 char_map[18] = F_PAGUP; /* ^R Page up */
302 char_map[19] = F_CENTER; /* ^S Center text */
303 char_map[20] = F_PAGDWN; /* ^T Page down */
304 char_map[21] = F_SOL; /* ^U Line start */
305 char_map[22] = F_DELWRD; /* ^V Delete word */
306 char_map[23] = F_PRVWRD; /* ^W Previous word */
307 char_map[24] = F_NXTMCH; /* ^X Next match */
308 char_map[25] = F_DELEOL; /* ^Y Delete to end of line */
309 char_map[26] = F_DELLIN; /* ^Z Delete line */
311 char_map[28] = F_TENTRY; /* ^\ Entry mode */
312 char_map[29] = F_PASTECB;/* ^]=paste clipboard */
313 char_map[30] = F_HOME; /* ^^ Home */
314 char_map[31] = F_ERSLIN; /* ^_ Erase line */
325 * Guarantee that the string is properly terminated */
326 char *bstrncpy(char *dest, const char *src, int maxlen)
328 strncpy(dest, src, maxlen-1);
336 * New style string mapping to function code
338 static unsigned do_smap(unsigned c)
358 for (i=len-1; i<MAX_STAB; i++) {
359 for (tstab=stab[i]; tstab; tstab=tstab->next) {
360 if (strncmp(str, tstab->str, len) == 0) {
361 if (len == tstab->len) {
365 break; /* found possibility continue searching */
372 /* found partial match, so get next character and retry */
373 str[len++] = t_gnc();
379 static void dump_stab()
385 for (i=0; i<MAX_STAB; i++) {
386 for (tstab=stab[i]; tstab; tstab=tstab->next) {
387 for (j=0; j<tstab->len; j++) {
389 if (c < 0x20 || c > 0x7F) {
390 sprintf(buf, " 0x%x ", c);
398 sprintf(buf, " func=%d len=%d\n\r", tstab->func, tstab->len);
406 * New routine. Add string to string->func mapping table.
408 static void add_smap(char *str, int func)
418 /* errmsg("String for func %d is zero length\n", func); */
421 tstab = (stab_t *)malloc(sizeof(stab_t));
422 memset(tstab, 0, sizeof(stab_t));
424 tstab->str = (char *)malloc(tstab->len + 1);
425 bstrncpy(tstab->str, str, tstab->len + 1);
427 if (tstab->len > num_stab) {
428 printf("stab string too long %d. Max is %d\n", tstab->len, num_stab);
431 tstab->next = stab[tstab->len-1];
432 stab[tstab->len-1] = tstab;
433 /* printf("Add_smap tstab=%x len=%d func=%d tstab->next=%x\n\r", tstab, len,
434 func, tstab->next); */
439 /* Get the next character from the terminal - performs table lookup on
440 the character to do the desired translation */
446 if ((c=t_gnc()) <= 599) { /* IBM generates codes up to 260 */
448 } else if (c > 1000) { /* stuffed function */
449 c -= 1000; /* convert back to function code */
454 /* if we got a screen size escape sequence, read height, width */
457 y = t_gnc() - 0x20; /* y */
458 x = t_gnc() - 0x20; /* x */
465 /* Get a complete input line */
468 input_line(char *string, int length)
470 char curline[2000]; /* edit buffer */
477 poolinit(); /* build line pool */
480 noline = 1; /* no line fetched yet */
481 for (cl=cp=0; cl<length && cl<(int)sizeof(curline); ) {
486 switch (c=input_char()) {
487 case F_RETURN: /* CR */
488 t_sendl("\r\n", 2); /* yes, print it and */
489 goto done; /* get out */
490 case F_CLRSCRN: /* clear screen */
492 t_sendl(curline, cl);
496 if (noline) { /* no line fetched yet */
497 getnext(); /* getnext so getprev gets current */
498 noline = 0; /* we now have line */
500 bstrncpy(curline, getprev(), sizeof(curline));
504 noline = 0; /* mark line fetched */
505 bstrncpy(curline, getnext(), sizeof(curline));
509 insert_space(curline, sizeof(curline));
512 delchr(1, curline, sizeof(curline)); /* delete one character */
514 case F_CSRLFT: /* Backspace */
518 forward(curline, sizeof(curline));
520 case F_ERSCHR: /* Rubout */
522 delchr(1, curline, sizeof(curline));
529 t_clrline(0, t_width);
534 i = next_word(curline);
536 forward(curline, sizeof(curline));
540 i = prev_word(curline);
546 delchr(next_word(curline), curline, sizeof(curline)); /* delete word */
548 case F_NXTMCH: /* Ctl-X */
550 *string = EOS; /* terminate string */
551 return(c); /* give it to him */
553 /* Note fall through */
557 backup(curline); /* backup to beginning of line */
559 t_clrline(0, t_width); /* erase line */
561 cl = 0; /* reset cursor counter */
572 forward(curline, sizeof(curline));
578 case F_TINS: /* toggle insert mode */
579 mode_insert = !mode_insert; /* flip bit */
582 if (c > 255) { /* function key hit */
583 if (cl==0) { /* if first character then */
584 *string = EOS; /* terminate string */
585 return c; /* return it */
587 t_honk_horn(); /* complain */
589 if ((c & 0xC0) == 0xC0) {
590 if ((c & 0xFC) == 0xFC) {
592 } else if ((c & 0xF8) == 0xF8) {
594 } else if ((c & 0xF0) == 0xF0) {
596 } else if ((c & 0xE0) == 0xE0) {
605 insert_space(curline, sizeof(curline));
607 curline[cp++] = c; /* store character in line being built */
608 t_char(c); /* echo character to terminal */
611 insert_hole(curline, sizeof(curline));
612 curline[cp++] = c; /* store character in line being built */
613 t_char(c); /* echo character to terminal */
616 cl = cp; /* keep current length */
623 /* If we fall through here rather than goto done, the line is too long
624 simply return what we have now. */
626 curline[cl++] = EOS; /* terminate */
627 bstrncpy(string,curline,length); /* return line to caller */
628 /* Save non-blank lines. Note, put line zaps curline */
629 if (curline[0] != EOS) {
630 putline(curline,cl); /* save line for posterity */
632 return 0; /* give it to him/her */
635 /* Insert a space at the current cursor position */
637 insert_space(char *curline, int curline_len)
641 if (cp >= cl || cl+1 > curline_len) {
644 /* Note! source and destination overlap */
645 memmove(&curline[cp+1],&curline[cp],i=cl-cp);
650 forward(curline, curline_len);
660 insert_hole(char *curline, int curline_len)
664 if (cp > cl || cl+1 > curline_len) {
667 /* Note! source and destination overlap */
668 memmove(&curline[cp+1], &curline[cp], i=cl-cp);
674 /* Move cursor forward keeping characters under it */
676 forward(char *str, int str_len)
687 if ((str[cp] & 0xC0) == 0xC0) {
689 while ((str[cp] & 0xC0) == 0x80) {
699 /* How many characters under the cursor */
701 char_count(int cptr, char *str)
707 if ((str[cptr] & 0xC0) == 0xC0) {
709 while ((str[cptr] & 0xC0) == 0x80) {
717 /* Backup cursor keeping characters under it */
724 while ((str[cp] & 0xC0) == 0x80) {
731 /* Delete the character under the cursor */
733 delchr(int del, char *curline, int line_len)
737 if (cp > cl || del == 0) {
740 while (del-- && cl > 0) {
741 cnt = char_count(cp, curline);
742 if ((i=cl-cp-cnt) > 0) {
743 memcpy(&curline[cp], &curline[cp+cnt], i);
747 t_clrline(0, t_width);
750 forward(curline, line_len);
759 /* Determine if character is part of a word */
765 if (c >= '0' && c <= '9')
767 if (c == '$' || c == '%')
772 /* Return number of characters to get to next word */
774 next_word(char *ldb_buf)
781 for ( ; ncp<cl && iswordc(*(ldb_buf+ncp)); ncp++) ;
782 for ( ; ncp<cl && !iswordc(*(ldb_buf+ncp)); ncp++) ;
786 /* Return number of characters to get to previous word */
788 prev_word(char *ldb_buf)
792 if (cp == 0) /* if at begin of line stop now */
794 if (cp > cl) /* if past eol start at eol */
798 /* backup to end of previous word - i.e. skip special chars */
799 for (i=ncp-1; i && !iswordc(*(ldb_buf+i)); i--) ;
800 if (i == 0) { /* at beginning of line? */
801 return cp; /* backup to beginning */
803 /* now move back through word to beginning of word */
804 for ( ; i && iswordc(*(ldb_buf+i)); i--) ;
805 ncp = i+1; /* position to first char of word */
806 if (i==0 && iswordc(*ldb_buf)) /* check for beginning of line */
808 return cp-ncp; /* return count */
811 /* Display new current line */
818 t_clrline(0,t_width);
819 cp = cl = strlen(str);
824 /* Initialize line pool. Split pool into two pieces. */
828 slptr = lptr = (struct lstr *)pool;
837 /* Return pointer to next line in the pool and advance current line pointer */
841 do { /* find next used line */
843 } while (!lptr->used);
844 return (char *)&lptr->line;
847 /* Return pointer to previous line in the pool */
851 do { /* find previous used line */
853 } while (!lptr->used);
854 return (char *)&lptr->line;
858 putline(char *newl, int newlen)
860 struct lstr *nptr; /* points to next line */
863 lptr = slptr; /* get ptr to last line stored */
864 lptr = lptr->nextl; /* advance pointer */
865 if ((char *)lptr-pool+newlen+PHDRL > POOLEN) { /* not enough room */
866 lptr->used = 0; /* delete line */
867 lptr = (struct lstr *)pool; /* start at beginning of buffer */
869 while (lptr->len < newlen+PHDRL) { /* concatenate buffers */
870 nptr = lptr->nextl; /* point to next line */
871 lptr->nextl = nptr->nextl; /* unlink it from list */
872 nptr->nextl->prevl = lptr;
873 lptr->len += nptr->len;
875 if (lptr->len > newlen + 2 * PHDRL) { /* split buffer */
876 nptr = (struct lstr *)((char *)lptr + newlen + PHDRL);
877 /* Appropriate byte alignment - normally 2 byte, but on
878 sparc we need 4 byte alignment, so we always do 4 */
879 if (((long unsigned)nptr & 3) != 0) { /* test four byte alignment */
881 nptr = (struct lstr *)((((long unsigned) p) & ~3) + 4);
883 nptr->len = lptr->len - ((char *)nptr - (char *)lptr);
884 lptr->len -= nptr->len;
885 nptr->nextl = lptr->nextl; /* link in new buffer */
886 lptr->nextl->prevl = nptr;
891 memcpy(&lptr->line,newl,newlen);
892 lptr->used = 1; /* mark line used */
893 slptr = lptr; /* save as stored line */
898 dump(struct lstr *ptr, char *msg)
900 printf("%s buf=%x nextl=%x prevl=%x len=%d used=%d\n",
901 msg,ptr,ptr->nextl,ptr->prevl,ptr->len,ptr->used);
903 printf("line=%s\n",&ptr->line);
905 #endif /* DEBUGOUT */
908 /* Honk horn on terminal */
915 /* Insert line on terminal */
922 /* Delete line from terminal */
929 /* clear line from pos to width */
931 t_clrline(int pos, int width)
933 asclrl(pos, width); /* clear to end of line */
936 /* Helper function to add string preceded by
937 * ESC to smap table */
938 static void add_esc_smap(const char *str, int func)
941 buf[0] = 0x1B; /* esc */
942 bstrncpy(buf+1, str, sizeof(buf)-1);
946 /* Set raw mode on terminal file. Basically, get the terminal into a
947 mode in which all characters can be read as they are entered. CBREAK
948 mode is not sufficient.
950 static void rawmode(FILE *input)
953 static char term_buf[2048];
954 static char *term_buffer = term_buf;
955 char *termtype = (char *)getenv("TERM");
957 /* Make sure we are dealing with a terminal */
958 if (!isatty(fileno(input))) {
961 if (tcgetattr(0, &old_term_params) != 0) {
962 printf("conio: Cannot tcgetattr()\n");
965 old_term_params_set = true;
967 t.c_cc[VMIN] = 1; /* satisfy read after 1 char */
969 t.c_iflag &= ~(BRKINT | IGNPAR | PARMRK | INPCK |
970 ISTRIP | ICRNL | IXON | IXOFF | INLCR | IGNCR);
973 t.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL | ICANON |
975 tcflush(0, TCIFLUSH);
976 if (tcsetattr(0, TCSANOW, &t) == -1) {
977 printf("Cannot tcsetattr()\n");
980 /* Defaults, the main program can override these */
981 signal(SIGQUIT, SIG_IGN);
982 signal(SIGHUP, SIG_IGN);
983 signal(SIGINT, sigintcatcher);
984 signal(SIGWINCH, SIG_IGN);
987 printf("Cannot get terminal type.\n");
991 if (tgetent(term_buffer, termtype) < 0) {
992 printf("Cannot get terminal termcap entry.\n");
996 t_width = t_height = -1;
997 /* Note (char *)casting is due to really stupid compiler warnings */
998 t_width = tgetnum((char *)"co") - 1;
999 t_height = tgetnum((char *)"li");
1002 t_cm = (char *)tgetstr((char *)"cm", &term_buffer);
1003 t_cs = (char *)tgetstr((char *)"cl", &term_buffer); /* clear screen */
1004 t_cl = (char *)tgetstr((char *)"ce", &term_buffer); /* clear line */
1005 t_dl = (char *)tgetstr((char *)"dl", &term_buffer); /* delete line */
1006 t_il = (char *)tgetstr((char *)"al", &term_buffer); /* insert line */
1007 t_honk = (char *)tgetstr((char *)"bl", &term_buffer); /* beep */
1008 t_ti = (char *)tgetstr((char *)"ti", &term_buffer);
1009 t_te = (char *)tgetstr((char *)"te", &term_buffer);
1010 t_up = (char *)tgetstr((char *)"up", &term_buffer);
1011 t_do = (char *)tgetstr((char *)"do", &term_buffer);
1012 t_sf = (char *)tgetstr((char *)"sf", &term_buffer);
1014 num_stab = MAX_STAB; /* get default stab size */
1015 stab = (stab_t **)malloc(sizeof(stab_t *) * num_stab);
1016 memset(stab, 0, sizeof(stab_t *) * num_stab);
1019 kl = (char *)tgetstr((char *)"kl", &term_buffer);
1020 kr = (char *)tgetstr((char *)"kr", &term_buffer);
1021 ku = (char *)tgetstr((char *)"ku", &term_buffer);
1022 kd = (char *)tgetstr((char *)"kd", &term_buffer);
1023 kh = (char *)tgetstr((char *)"kh", &term_buffer);
1024 kb = (char *)tgetstr((char *)"kb", &term_buffer);
1025 kD = (char *)tgetstr((char *)"kD", &term_buffer);
1026 kI = (char *)tgetstr((char *)"kI", &term_buffer);
1027 kN = (char *)tgetstr((char *)"kN", &term_buffer);
1028 kP = (char *)tgetstr((char *)"kP", &term_buffer);
1029 kH = (char *)tgetstr((char *)"kH", &term_buffer);
1030 kE = (char *)tgetstr((char *)"kE", &term_buffer);
1032 add_smap(kl, F_CSRLFT);
1033 add_smap(kr, F_CSRRGT);
1034 add_smap(ku, F_CSRUP);
1035 add_smap(kd, F_CSRDWN);
1036 add_smap(kI, F_TINS);
1037 add_smap(kN, F_PAGDWN);
1038 add_smap(kP, F_PAGUP);
1039 add_smap(kH, F_HOME);
1040 add_smap(kE, F_EOF);
1043 add_esc_smap("[A", F_CSRUP);
1044 add_esc_smap("[B", F_CSRDWN);
1045 add_esc_smap("[C", F_CSRRGT);
1046 add_esc_smap("[D", F_CSRLFT);
1047 add_esc_smap("[1~", F_HOME);
1048 add_esc_smap("[2~", F_TINS);
1049 add_esc_smap("[3~", F_DELCHR);
1050 add_esc_smap("[4~", F_EOF);
1051 add_esc_smap("f", F_NXTWRD);
1052 add_esc_smap("b", F_PRVWRD);
1056 /* Restore tty mode */
1057 static void normode()
1059 if (old_term_params_set) {
1060 tcsetattr(0, TCSANOW, &old_term_params);
1061 old_term_params_set = false;
1065 /* Get next character from terminal/script file/unget buffer */
1073 /* Get next character from OS */
1074 static unsigned t_getch(void)
1078 if (read(0, &c, 1) != 1) {
1084 /* Send message to terminal - primitive routine */
1086 t_sendl(const char *msg, int len)
1092 t_send(const char *msg)
1097 t_sendl(msg, strlen(msg)); /* faster than one char at time */
1100 /* Send single character to terminal - primitive routine - */
1104 (void)write(1, &c, 1);
1108 static int brkflg = 0; /* set on user break */
1110 /* Routine to return true if user types break */
1116 /* Clear break flag */
1123 /* Interrupt caught here */
1124 static void sigintcatcher(int sig)
1131 signal(SIGINT, sigintcatcher);
1138 signal(SIGINT, sigintcatcher);
1142 /* ASCLRL() -- Clear to end of line from current position */
1143 static void asclrl(int pos, int width)
1148 t_send(t_cl); /* use clear to eol function */
1151 if (pos==1 && linsdel_ok) {
1152 t_delete_line(); /* delete line */
1153 t_insert_line(); /* reinsert it */
1156 for (i=1; i<=width-pos+1; i++)
1157 t_char(' '); /* last resort, blank it out */
1158 for (i=1; i<=width-pos+1; i++) /* backspace to original position */
1165 /* ASCURS -- Set cursor position */
1166 static void ascurs(int y, int x)
1168 t_send((char *)tgoto(t_cm, x, y));
1172 /* ASCLRS -- Clear whole screen */
1173 static void asclrs()
1181 /* ASINSL -- insert new line after cursor */
1182 static void asinsl()
1184 t_clrline(0, t_width);
1185 t_send(t_il); /* insert before */
1188 /* ASDELL -- Delete line at cursor */
1189 static void asdell()