NetBSD-5.0.2/dist/nvi/common/api.c
/* $NetBSD: api.c,v 1.1.1.2.6.1 2009/01/20 02:41:11 snj Exp $ */
/*-
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1992, 1993, 1994, 1995, 1996
* Keith Bostic. All rights reserved.
* Copyright (c) 1995
* George V. Neville-Neil. All rights reserved.
*
* See the LICENSE file for redistribution information.
*/
#include "config.h"
#ifndef lint
static const char sccsid[] = "Id: api.c,v 8.40 2002/06/08 19:30:33 skimo Exp (Berkeley) Date: 2002/06/08 19:30:33";
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/time.h>
#include <bitstring.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "../common/common.h"
#include "../ex/tag.h"
extern GS *__global_list; /* XXX */
/*
* api_fscreen --
* Return a pointer to the screen specified by the screen id
* or a file name.
*
* PUBLIC: SCR *api_fscreen __P((int, char *));
*/
SCR *
api_fscreen(int id, char *name)
{
GS *gp;
SCR *tsp;
WIN *wp;
gp = __global_list;
/* Search the displayed lists. */
for (wp = gp->dq.cqh_first;
wp != (void *)&gp->dq; wp = wp->q.cqe_next)
for (tsp = wp->scrq.cqh_first;
tsp != (void *)&wp->scrq; tsp = tsp->q.cqe_next)
if (name == NULL) {
if (id == tsp->id)
return (tsp);
} else if (!strcmp(name, tsp->frp->name))
return (tsp);
/* Search the hidden list. */
for (tsp = gp->hq.cqh_first;
tsp != (void *)&gp->hq; tsp = tsp->q.cqe_next)
if (name == NULL) {
if (id == tsp->id)
return (tsp);
} else if (!strcmp(name, tsp->frp->name))
return (tsp);
return (NULL);
}
/*
* api_aline --
* Append a line.
*
* PUBLIC: int api_aline __P((SCR *, db_recno_t, char *, size_t));
*/
int
api_aline(SCR *sp, db_recno_t lno, char *line, size_t len)
{
size_t wblen;
const CHAR_T *wbp;
CHAR2INT(sp, line, len, wbp, wblen);
return (db_append(sp, 1, lno, wbp, wblen));
}
/*
* api_extend --
* Extend file.
*
* PUBLIC: int api_extend __P((SCR *, db_recno_t));
*/
int
api_extend(SCR *sp, db_recno_t lno)
{
db_recno_t lastlno;
if (db_last(sp, &lastlno))
return 1;
while(lastlno < lno)
if (db_append(sp, 1, lastlno++, NULL, 0))
return 1;
return 0;
}
/*
* api_dline --
* Delete a line.
*
* PUBLIC: int api_dline __P((SCR *, db_recno_t));
*/
int
api_dline(SCR *sp, db_recno_t lno)
{
if (db_delete(sp, lno))
return 1;
/* change current line if deleted line is that one
* or one berfore that
*/
if (sp->lno >= lno && sp->lno > 1)
sp->lno--;
return 0;
}
/*
* api_gline --
* Get a line.
*
* PUBLIC: int api_gline __P((SCR *, db_recno_t, CHAR_T **, size_t *));
*/
int
api_gline(SCR *sp, db_recno_t lno, CHAR_T **linepp, size_t *lenp)
{
int isempty;
if (db_eget(sp, lno, linepp, lenp, &isempty)) {
if (isempty)
msgq(sp, M_ERR, "209|The file is empty");
return (1);
}
return (0);
}
/*
* api_iline --
* Insert a line.
*
* PUBLIC: int api_iline __P((SCR *, db_recno_t, CHAR_T *, size_t));
*/
int
api_iline(SCR *sp, db_recno_t lno, CHAR_T *line, size_t len)
{
return (db_insert(sp, lno, line, len));
}
/*
* api_lline --
* Return the line number of the last line in the file.
*
* PUBLIC: int api_lline __P((SCR *, db_recno_t *));
*/
int
api_lline(SCR *sp, db_recno_t *lnop)
{
return (db_last(sp, lnop));
}
/*
* api_sline --
* Set a line.
*
* PUBLIC: int api_sline __P((SCR *, db_recno_t, CHAR_T *, size_t));
*/
int
api_sline(SCR *sp, db_recno_t lno, CHAR_T *line, size_t len)
{
return (db_set(sp, lno, line, len));
}
/*
* api_getmark --
* Get the mark.
*
* PUBLIC: int api_getmark __P((SCR *, int, MARK *));
*/
int
api_getmark(SCR *sp, int markname, MARK *mp)
{
return (mark_get(sp, (ARG_CHAR_T)markname, mp, M_ERR));
}
/*
* api_setmark --
* Set the mark.
*
* PUBLIC: int api_setmark __P((SCR *, int, MARK *));
*/
int
api_setmark(SCR *sp, int markname, MARK *mp)
{
return (mark_set(sp, (ARG_CHAR_T)markname, mp, 1));
}
/*
* api_nextmark --
* Return the first mark if next not set, otherwise return the
* subsequent mark.
*
* PUBLIC: int api_nextmark __P((SCR *, int, char *));
*/
int
api_nextmark(SCR *sp, int next, char *namep)
{
LMARK *mp;
mp = sp->ep->marks.lh_first;
if (next)
for (; mp != NULL; mp = mp->q.le_next)
if (mp->name == *namep) {
mp = mp->q.le_next;
break;
}
if (mp == NULL)
return (1);
*namep = mp->name;
return (0);
}
/*
* api_getcursor --
* Get the cursor.
*
* PUBLIC: int api_getcursor __P((SCR *, MARK *));
*/
int
api_getcursor(SCR *sp, MARK *mp)
{
mp->lno = sp->lno;
mp->cno = sp->cno;
return (0);
}
/*
* api_setcursor --
* Set the cursor.
*
* PUBLIC: int api_setcursor __P((SCR *, MARK *));
*/
int
api_setcursor(SCR *sp, MARK *mp)
{
size_t len;
if (db_get(sp, mp->lno, DBG_FATAL, NULL, &len))
return (1);
if (mp->cno > len) {
msgq(sp, M_ERR, "Cursor set to nonexistent column");
return (1);
}
/* Set the cursor. */
sp->lno = mp->lno;
sp->cno = mp->cno;
return (0);
}
/*
* api_emessage --
* Print an error message.
*
* PUBLIC: void api_emessage __P((SCR *, char *));
*/
void
api_emessage(SCR *sp, char *text)
{
msgq(sp, M_ERR, "%s", text);
}
/*
* api_imessage --
* Print an informational message.
*
* PUBLIC: void api_imessage __P((SCR *, char *));
*/
void
api_imessage(SCR *sp, char *text)
{
msgq(sp, M_INFO, "%s", text);
}
/*
* api_edit
* Create a new screen and return its id
* or edit a new file in the current screen.
*
* PUBLIC: int api_edit __P((SCR *, char *, SCR **, int));
*/
int
api_edit(SCR *sp, char *file, SCR **spp, int newscreen)
{
EXCMD cmd;
size_t wlen;
const CHAR_T *wp;
if (file) {
ex_cinit(sp, &cmd, C_EDIT, 0, OOBLNO, OOBLNO, 0);
CHAR2INT(sp, file, strlen(file) + 1, wp, wlen);
argv_exp0(sp, &cmd, wp, wlen - 1 /* terminating 0 */);
} else
ex_cinit(sp, &cmd, C_EDIT, 0, OOBLNO, OOBLNO, 0);
if (newscreen)
cmd.flags |= E_NEWSCREEN; /* XXX */
if (cmd.cmd->fn(sp, &cmd))
return (1);
*spp = sp->nextdisp;
return (0);
}
/*
* api_escreen
* End a screen.
*
* PUBLIC: int api_escreen __P((SCR *));
*/
int
api_escreen(SCR *sp)
{
EXCMD cmd;
/*
* XXX
* If the interpreter exits anything other than the current
* screen, vi isn't going to update everything correctly.
*/
ex_cinit(sp, &cmd, C_QUIT, 0, OOBLNO, OOBLNO, 0);
return (cmd.cmd->fn(sp, &cmd));
}
/*
* api_swscreen --
* Switch to a new screen.
*
* PUBLIC: int api_swscreen __P((SCR *, SCR *));
*/
int
api_swscreen(SCR *sp, SCR *new)
{
/*
* XXX
* If the interpreter switches from anything other than the
* current screen, vi isn't going to update everything correctly.
*/
sp->nextdisp = new;
F_SET(sp, SC_SSWITCH);
return (0);
}
/*
* api_map --
* Map a key.
*
* PUBLIC: int api_map __P((SCR *, char *, char *, size_t));
*/
int
api_map(SCR *sp, char *name, char *map, size_t len)
{
EXCMD cmd;
size_t wlen;
const CHAR_T *wp;
ex_cinit(sp, &cmd, C_MAP, 0, OOBLNO, OOBLNO, 0);
CHAR2INT(sp, name, strlen(name) + 1, wp, wlen);
argv_exp0(sp, &cmd, wp, wlen - 1);
CHAR2INT(sp, map, len, wp, wlen);
argv_exp0(sp, &cmd, wp, wlen);
return (cmd.cmd->fn(sp, &cmd));
}
/*
* api_unmap --
* Unmap a key.
*
* PUBLIC: int api_unmap __P((SCR *, char *));
*/
int
api_unmap(SCR *sp, char *name)
{
EXCMD cmd;
size_t wlen;
const CHAR_T *wp;
ex_cinit(sp, &cmd, C_UNMAP, 0, OOBLNO, OOBLNO, 0);
CHAR2INT(sp, name, strlen(name) + 1, wp, wlen);
argv_exp0(sp, &cmd, wp, wlen - 1);
return (cmd.cmd->fn(sp, &cmd));
}
/*
* api_opts_get --
* Return a option value as a string, in allocated memory.
* If the option is of type boolean, boolvalue is (un)set
* according to the value; otherwise boolvalue is -1.
*
* PUBLIC: int api_opts_get __P((SCR *, CHAR_T *, char **, int *));
*/
int
api_opts_get(SCR *sp, const CHAR_T *name, char **value, int *boolvalue)
{
OPTLIST const *op;
int offset;
if ((op = opts_search(name)) == NULL) {
opts_nomatch(sp, name);
return (1);
}
offset = op - optlist;
if (boolvalue != NULL)
*boolvalue = -1;
switch (op->type) {
case OPT_0BOOL:
case OPT_1BOOL:
MALLOC_RET(sp, *value, char *, STRLEN(op->name) + 2 + 1);
(void)sprintf(*value,
"%s"WS, O_ISSET(sp, offset) ? "" : "no", op->name);
if (boolvalue != NULL)
*boolvalue = O_ISSET(sp, offset);
break;
case OPT_NUM:
MALLOC_RET(sp, *value, char *, 20);
(void)sprintf(*value, "%lu", (u_long)O_VAL(sp, offset));
break;
case OPT_STR:
if (O_STR(sp, offset) == NULL) {
MALLOC_RET(sp, *value, char *, 2);
value[0] = '\0';
} else {
MALLOC_RET(sp,
*value, char *, strlen(O_STR(sp, offset)) + 1);
(void)sprintf(*value, "%s", O_STR(sp, offset));
}
break;
}
return (0);
}
/*
* api_opts_set --
* Set options.
*
* PUBLIC: int api_opts_set __P((SCR *, CHAR_T *, char *, u_long, int));
*/
int
api_opts_set(SCR *sp, const CHAR_T *name,
const char *str_value, u_long num_value, int bool_value)
{
ARGS *ap[2], a, b;
OPTLIST const *op;
int rval;
size_t blen;
CHAR_T *bp;
if ((op = opts_search(name)) == NULL) {
opts_nomatch(sp, name);
return (1);
}
switch (op->type) {
case OPT_0BOOL:
case OPT_1BOOL:
GET_SPACE_RETW(sp, bp, blen, 64);
a.len = SPRINTF(bp, 64, L("%s"WS), bool_value ? "" : "no", name);
break;
case OPT_NUM:
GET_SPACE_RETW(sp, bp, blen, 64);
a.len = SPRINTF(bp, 64, L(""WS"=%lu"), name, num_value);
break;
case OPT_STR:
GET_SPACE_RETW(sp, bp, blen, 1024);
a.len = SPRINTF(bp, 1024, L(""WS"=%s"), name, str_value);
break;
default:
bp = NULL;
break;
}
a.bp = bp;
b.len = 0;
b.bp = NULL;
ap[0] = &a;
ap[1] = &b;
rval = opts_set(sp, ap, NULL);
FREE_SPACEW(sp, bp, blen);
return (rval);
}
/*
* api_run_str --
* Execute a string as an ex command.
*
* PUBLIC: int api_run_str __P((SCR *, char *));
*/
int
api_run_str(SCR *sp, char *cmd)
{
size_t wlen;
const CHAR_T *wp;
CHAR2INT(sp, cmd, strlen(cmd)+1, wp, wlen);
return (ex_run_str(sp, NULL, wp, wlen - 1, 0, 0));
}
/*
* PUBLIC: TAGQ * api_tagq_new __P((SCR*, char*));
*/
TAGQ *
api_tagq_new(SCR *sp, char *tag)
{
TAGQ *tqp;
size_t len;
/* Allocate and initialize the tag queue structure. */
len = strlen(tag);
CALLOC_GOTO(sp, tqp, TAGQ *, 1, sizeof(TAGQ) + len + 1);
CIRCLEQ_INIT(&tqp->tagq);
tqp->tag = tqp->buf;
memcpy(tqp->tag, tag, (tqp->tlen = len) + 1);
return tqp;
alloc_err:
return (NULL);
}
/*
* PUBLIC: void api_tagq_add __P((SCR*, TAGQ*, char*, char *, char *));
*/
void
api_tagq_add(SCR *sp, TAGQ *tqp, char *filename, char *search, char *msg)
{
TAG *tp;
const CHAR_T *wp;
size_t wlen;
size_t flen = strlen(filename);
size_t slen = strlen(search);
size_t mlen = strlen(msg);
CALLOC_GOTO(sp, tp, TAG *, 1,
sizeof(TAG) - 1 + flen + 1 +
(slen + 1 + mlen + 1) * sizeof(CHAR_T));
tp->fname = (char *)tp->buf;
memcpy(tp->fname, filename, flen + 1);
tp->fnlen = flen;
tp->search = (CHAR_T *)((char *)tp->fname + flen + 1);
CHAR2INT(sp, search, slen + 1, wp, wlen);
MEMCPYW(tp->search, wp, wlen);
tp->slen = slen;
tp->msg = tp->search + slen + 1;
CHAR2INT(sp, msg, mlen + 1, wp, wlen);
MEMCPYW(tp->msg, wp, wlen);
tp->mlen = mlen;
CIRCLEQ_INSERT_TAIL(&tqp->tagq, tp, q);
alloc_err:
return;
}
/*
* PUBLIC: int api_tagq_push __P((SCR*, TAGQ**));
*/
int
api_tagq_push(SCR *sp, TAGQ **tqpp)
{
TAGQ *tqp;
tqp = *tqpp;
*tqpp = 0;
/* Check to see if we found anything. */
if (tqp->tagq.cqh_first == (void *)&tqp->tagq) {
free(tqp);
return 0;
}
tqp->current = tqp->tagq.cqh_first;
if (tagq_push(sp, tqp, 0, 0))
return 1;
return (0);
}
/*
* PUBLIC: void api_tagq_free __P((SCR*, TAGQ*));
*/
void
api_tagq_free(SCR *sp, TAGQ *tqp)
{
if (tqp)
tagq_free(sp, tqp);
}