f0957ccae4
This is the gsoc-2011 project to clean up and backport multibyte support from other nvi forks in a form we can use. USE_WIDECHAR is on unless building for the rescue crunchgen. This should allow editing in the native locale encoding. USE_ICONV depends on make.conf having 'WITH_ICONV=YES' for now. This adds the ability to do things like edit a KOI8-R file while having $LANG set to (say) en_US.UTF-8. iconv is used to transcode the characters for display. Other points: * It uses gencat and catopen/etc instead of homegrown msg catalog stuff. * A lot of stuff has been trimmed out, eg: the perl and tcl bindings which we could never use in base anyway. * It uses ncursesw when in widechar mode. This could be interesting. GSoC info: http://www.google-melange.com/gsoc/proposal/review/google/gsoc2011/zy/1 Repo at: https://github.com/lichray/nvi2 Obtained from: Zhihao Yuan <lichray@gmail.com>
217 lines
4.3 KiB
C
217 lines
4.3 KiB
C
/*-
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* Copyright (c) 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "$Id: ex_util.c,v 10.32 2001/06/25 15:19:21 skimo Exp $";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/stat.h>
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#include <bitstring.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "../common/common.h"
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/*
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* ex_cinit --
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* Create an EX command structure.
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*
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* PUBLIC: void ex_cinit __P((SCR *, EXCMD *, int, int, recno_t, recno_t, int));
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*/
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void
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ex_cinit(SCR *sp, EXCMD *cmdp, int cmd_id, int naddr, recno_t lno1, recno_t lno2, int force)
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{
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memset(cmdp, 0, sizeof(EXCMD));
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cmdp->cmd = &cmds[cmd_id];
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cmdp->addrcnt = naddr;
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cmdp->addr1.lno = lno1;
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cmdp->addr2.lno = lno2;
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cmdp->addr1.cno = cmdp->addr2.cno = 1;
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if (force)
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cmdp->iflags |= E_C_FORCE;
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(void)argv_init(sp, cmdp);
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}
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/*
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* ex_getline --
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* Return a line from the file.
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*
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* PUBLIC: int ex_getline __P((SCR *, FILE *, size_t *));
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*/
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int
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ex_getline(SCR *sp, FILE *fp, size_t *lenp)
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{
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EX_PRIVATE *exp;
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size_t off;
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int ch;
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char *p;
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exp = EXP(sp);
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for (errno = 0, off = 0, p = exp->ibp;;) {
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if (off >= exp->ibp_len) {
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BINC_RETC(sp, exp->ibp, exp->ibp_len, off + 1);
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p = exp->ibp + off;
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}
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if ((ch = getc(fp)) == EOF && !feof(fp)) {
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if (errno == EINTR) {
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errno = 0;
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clearerr(fp);
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continue;
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}
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return (1);
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}
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if (ch == EOF || ch == '\n') {
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if (ch == EOF && !off)
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return (1);
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*lenp = off;
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return (0);
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}
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*p++ = ch;
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++off;
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}
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/* NOTREACHED */
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}
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/*
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* ex_ncheck --
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* Check for more files to edit.
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*
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* PUBLIC: int ex_ncheck __P((SCR *, int));
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*/
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int
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ex_ncheck(SCR *sp, int force)
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{
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char **ap;
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/*
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* !!!
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* Historic practice: quit! or two quit's done in succession
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* (where ZZ counts as a quit) didn't check for other files.
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*/
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if (!force && sp->ccnt != sp->q_ccnt + 1 &&
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sp->cargv != NULL && sp->cargv[1] != NULL) {
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sp->q_ccnt = sp->ccnt;
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for (ap = sp->cargv + 1; *ap != NULL; ++ap);
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msgq(sp, M_ERR,
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"167|%d more files to edit", (int)(ap - sp->cargv) - 1);
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return (1);
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}
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return (0);
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}
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/*
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* ex_init --
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* Init the screen for ex.
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*
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* PUBLIC: int ex_init __P((SCR *));
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*/
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int
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ex_init(SCR *sp)
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{
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GS *gp;
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gp = sp->gp;
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if (gp->scr_screen(sp, SC_EX))
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return (1);
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(void)gp->scr_attr(sp, SA_ALTERNATE, 0);
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sp->rows = O_VAL(sp, O_LINES);
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sp->cols = O_VAL(sp, O_COLUMNS);
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F_CLR(sp, SC_VI);
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F_SET(sp, SC_EX | SC_SCR_EX);
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return (0);
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}
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/*
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* ex_emsg --
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* Display a few common ex and vi error messages.
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*
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* PUBLIC: void ex_wemsg __P((SCR *, CHAR_T *, exm_t));
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*/
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void
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ex_wemsg(SCR* sp, CHAR_T *p, exm_t which)
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{
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char *np;
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size_t nlen;
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if (p) INT2CHAR(sp, p, STRLEN(p), np, nlen);
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else np = NULL;
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ex_emsg(sp, np, which);
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}
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/*
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* ex_emsg --
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* Display a few common ex and vi error messages.
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*
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* PUBLIC: void ex_emsg __P((SCR *, char *, exm_t));
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*/
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void
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ex_emsg(SCR *sp, char *p, exm_t which)
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{
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switch (which) {
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case EXM_EMPTYBUF:
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msgq(sp, M_ERR, "168|Buffer %s is empty", p);
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break;
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case EXM_FILECOUNT:
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msgq_str(sp, M_ERR, p,
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"144|%s: expanded into too many file names");
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break;
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case EXM_NOCANON:
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msgq(sp, M_ERR,
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"283|The %s command requires the ex terminal interface", p);
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break;
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case EXM_NOCANON_F:
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msgq(sp, M_ERR,
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"272|That form of %s requires the ex terminal interface",
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p);
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break;
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case EXM_NOFILEYET:
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if (p == NULL)
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msgq(sp, M_ERR,
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"274|Command failed, no file read in yet.");
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else
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msgq(sp, M_ERR,
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"173|The %s command requires that a file have already been read in", p);
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break;
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case EXM_NOPREVBUF:
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msgq(sp, M_ERR, "171|No previous buffer to execute");
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break;
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case EXM_NOPREVRE:
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msgq(sp, M_ERR, "172|No previous regular expression");
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break;
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case EXM_NOSUSPEND:
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msgq(sp, M_ERR, "230|This screen may not be suspended");
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break;
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case EXM_SECURE:
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msgq(sp, M_ERR,
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"290|The %s command is not supported when the secure edit option is set", p);
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break;
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case EXM_SECURE_F:
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msgq(sp, M_ERR,
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"284|That form of %s is not supported when the secure edit option is set", p);
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break;
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case EXM_USAGE:
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msgq(sp, M_ERR, "174|Usage: %s", p);
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break;
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}
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}
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