119304Speter/*- 219304Speter * Copyright (c) 1992, 1993, 1994 319304Speter * The Regents of the University of California. All rights reserved. 419304Speter * Copyright (c) 1992, 1993, 1994, 1995, 1996 519304Speter * Keith Bostic. All rights reserved. 619304Speter * 719304Speter * See the LICENSE file for redistribution information. 819304Speter */ 919304Speter 1019304Speter#include "config.h" 1119304Speter 1219304Speter#ifndef lint 13254225Speterstatic const char sccsid[] = "$Id: ex_write.c,v 10.41 2011/12/02 01:07:06 zy Exp $"; 1419304Speter#endif /* not lint */ 1519304Speter 1619304Speter#include <sys/types.h> 1719304Speter#include <sys/queue.h> 1819304Speter#include <sys/stat.h> 1919304Speter 2019304Speter#include <bitstring.h> 2119304Speter#include <ctype.h> 2219304Speter#include <errno.h> 2319304Speter#include <fcntl.h> 2419304Speter#include <limits.h> 2519304Speter#include <stdio.h> 2619304Speter#include <stdlib.h> 2719304Speter#include <string.h> 28254225Speter#include <strings.h> 2919304Speter#include <unistd.h> 3019304Speter 3119304Speter#include "../common/common.h" 3219304Speter 3319304Speterenum which {WN, WQ, WRITE, XIT}; 3419304Speterstatic int exwr __P((SCR *, EXCMD *, enum which)); 3519304Speter 3619304Speter/* 3719304Speter * ex_wn -- :wn[!] [>>] [file] 3819304Speter * Write to a file and switch to the next one. 3919304Speter * 4019304Speter * PUBLIC: int ex_wn __P((SCR *, EXCMD *)); 4119304Speter */ 4219304Speterint 43254225Speterex_wn(SCR *sp, EXCMD *cmdp) 4419304Speter{ 4519304Speter if (exwr(sp, cmdp, WN)) 4619304Speter return (1); 4719304Speter if (file_m3(sp, 0)) 4819304Speter return (1); 4919304Speter 5019304Speter /* The file name isn't a new file to edit. */ 5119304Speter cmdp->argc = 0; 5219304Speter 5319304Speter return (ex_next(sp, cmdp)); 5419304Speter} 5519304Speter 5619304Speter/* 5719304Speter * ex_wq -- :wq[!] [>>] [file] 5819304Speter * Write to a file and quit. 5919304Speter * 6019304Speter * PUBLIC: int ex_wq __P((SCR *, EXCMD *)); 6119304Speter */ 6219304Speterint 63254225Speterex_wq(SCR *sp, EXCMD *cmdp) 6419304Speter{ 6519304Speter int force; 6619304Speter 6719304Speter if (exwr(sp, cmdp, WQ)) 6819304Speter return (1); 6919304Speter if (file_m3(sp, 0)) 7019304Speter return (1); 7119304Speter 7219304Speter force = FL_ISSET(cmdp->iflags, E_C_FORCE); 7319304Speter 7419304Speter if (ex_ncheck(sp, force)) 7519304Speter return (1); 7619304Speter 7719304Speter F_SET(sp, force ? SC_EXIT_FORCE : SC_EXIT); 7819304Speter return (0); 7919304Speter} 8019304Speter 8119304Speter/* 8219304Speter * ex_write -- :write[!] [>>] [file] 8319304Speter * :write [!] [cmd] 8419304Speter * Write to a file. 8519304Speter * 8619304Speter * PUBLIC: int ex_write __P((SCR *, EXCMD *)); 8719304Speter */ 8819304Speterint 89254225Speterex_write(SCR *sp, EXCMD *cmdp) 9019304Speter{ 9119304Speter return (exwr(sp, cmdp, WRITE)); 9219304Speter} 9319304Speter 9419304Speter 9519304Speter/* 9619304Speter * ex_xit -- :x[it]! [file] 9719304Speter * Write out any modifications and quit. 9819304Speter * 9919304Speter * PUBLIC: int ex_xit __P((SCR *, EXCMD *)); 10019304Speter */ 10119304Speterint 102254225Speterex_xit(SCR *sp, EXCMD *cmdp) 10319304Speter{ 10419304Speter int force; 10519304Speter 10619304Speter NEEDFILE(sp, cmdp); 10719304Speter 10819304Speter if (F_ISSET(sp->ep, F_MODIFIED) && exwr(sp, cmdp, XIT)) 10919304Speter return (1); 11019304Speter if (file_m3(sp, 0)) 11119304Speter return (1); 11219304Speter 11319304Speter force = FL_ISSET(cmdp->iflags, E_C_FORCE); 11419304Speter 11519304Speter if (ex_ncheck(sp, force)) 11619304Speter return (1); 11719304Speter 11819304Speter F_SET(sp, force ? SC_EXIT_FORCE : SC_EXIT); 11919304Speter return (0); 12019304Speter} 12119304Speter 12219304Speter/* 12319304Speter * exwr -- 12419304Speter * The guts of the ex write commands. 12519304Speter */ 12619304Speterstatic int 127254225Speterexwr(SCR *sp, EXCMD *cmdp, enum which cmd) 12819304Speter{ 12919304Speter MARK rm; 13019304Speter int flags; 131254225Speter char *name; 132254225Speter CHAR_T *p = NULL; 133254225Speter size_t nlen; 134254225Speter char *n; 135254225Speter int rc; 136254225Speter EX_PRIVATE *exp; 13719304Speter 13819304Speter NEEDFILE(sp, cmdp); 13919304Speter 14019304Speter /* All write commands can have an associated '!'. */ 14119304Speter LF_INIT(FS_POSSIBLE); 14219304Speter if (FL_ISSET(cmdp->iflags, E_C_FORCE)) 14319304Speter LF_SET(FS_FORCE); 14419304Speter 14519304Speter /* Skip any leading whitespace. */ 14619304Speter if (cmdp->argc != 0) 147254225Speter for (p = cmdp->argv[0]->bp; *p != '\0' && cmdskip(*p); ++p); 14819304Speter 14919304Speter /* If "write !" it's a pipe to a utility. */ 15019304Speter if (cmdp->argc != 0 && cmd == WRITE && *p == '!') { 15119304Speter /* Secure means no shell access. */ 15219304Speter if (O_ISSET(sp, O_SECURE)) { 153254225Speter ex_wemsg(sp, cmdp->cmd->name, EXM_SECURE_F); 15419304Speter return (1); 15519304Speter } 15619304Speter 15719304Speter /* Expand the argument. */ 158254225Speter for (++p; *p && cmdskip(*p); ++p); 15919304Speter if (*p == '\0') { 16019304Speter ex_emsg(sp, cmdp->cmd->usage, EXM_USAGE); 16119304Speter return (1); 16219304Speter } 163254225Speter if (argv_exp1(sp, cmdp, p, STRLEN(p), 1)) 16419304Speter return (1); 16519304Speter 166254225Speter /* Set the last bang command */ 167254225Speter exp = EXP(sp); 168254225Speter free(exp->lastbcomm); 169254225Speter exp->lastbcomm = v_wstrdup(sp, cmdp->argv[1]->bp, 170254225Speter cmdp->argv[1]->len); 171254225Speter 17219304Speter /* 17319304Speter * Historically, vi waited after a write filter even if there 17419304Speter * wasn't any output from the command. People complained when 17519304Speter * nvi waited only if there was output, wanting the visual cue 17619304Speter * that the program hadn't written anything. 17719304Speter */ 17819304Speter F_SET(sp, SC_EX_WAIT_YES); 17919304Speter 18019304Speter /* 18119304Speter * !!! 18219304Speter * Ignore the return cursor position, the cursor doesn't 18319304Speter * move. 18419304Speter */ 18519304Speter if (ex_filter(sp, cmdp, &cmdp->addr1, 18619304Speter &cmdp->addr2, &rm, cmdp->argv[1]->bp, FILTER_WRITE)) 18719304Speter return (1); 18819304Speter 18919304Speter /* Ex terminates with a bang, even if the command fails. */ 19019304Speter if (!F_ISSET(sp, SC_VI) && !F_ISSET(sp, SC_EX_SILENT)) 19119304Speter (void)ex_puts(sp, "!\n"); 19219304Speter 19319304Speter return (0); 19419304Speter } 19519304Speter 19619304Speter /* Set the FS_ALL flag if we're writing the entire file. */ 19719304Speter if (cmdp->addr1.lno <= 1 && !db_exist(sp, cmdp->addr2.lno + 1)) 19819304Speter LF_SET(FS_ALL); 19919304Speter 20019304Speter /* If "write >>" it's an append to a file. */ 20119304Speter if (cmdp->argc != 0 && cmd != XIT && p[0] == '>' && p[1] == '>') { 20219304Speter LF_SET(FS_APPEND); 20319304Speter 20419304Speter /* Skip ">>" and whitespace. */ 205254225Speter for (p += 2; *p && cmdskip(*p); ++p); 20619304Speter } 20719304Speter 20819304Speter /* If no other arguments, just write the file back. */ 20919304Speter if (cmdp->argc == 0 || *p == '\0') 21019304Speter return (file_write(sp, 21119304Speter &cmdp->addr1, &cmdp->addr2, NULL, flags)); 21219304Speter 21319304Speter /* Build an argv so we get an argument count and file expansion. */ 214254225Speter if (argv_exp2(sp, cmdp, p, STRLEN(p))) 21519304Speter return (1); 21619304Speter 21719304Speter /* 21819304Speter * 0 args: impossible. 21919304Speter * 1 args: impossible (I hope). 22019304Speter * 2 args: read it. 22119304Speter * >2 args: object, too many args. 22219304Speter * 22319304Speter * The 1 args case depends on the argv_sexp() function refusing 22419304Speter * to return success without at least one non-blank character. 22519304Speter */ 22619304Speter switch (cmdp->argc) { 22719304Speter case 0: 22819304Speter case 1: 22919304Speter abort(); 23019304Speter /* NOTREACHED */ 23119304Speter case 2: 232254225Speter INT2CHAR(sp, cmdp->argv[1]->bp, cmdp->argv[1]->len+1, 233254225Speter n, nlen); 234254225Speter name = v_strdup(sp, n, nlen - 1); 23519304Speter 23619304Speter /* 23719304Speter * !!! 23819304Speter * Historically, the read and write commands renamed 23919304Speter * "unnamed" files, or, if the file had a name, set 24019304Speter * the alternate file name. 24119304Speter */ 24219304Speter if (F_ISSET(sp->frp, FR_TMPFILE) && 24319304Speter !F_ISSET(sp->frp, FR_EXNAMED)) { 244254225Speter if ((n = v_strdup(sp, name, nlen - 1)) != NULL) { 24519304Speter free(sp->frp->name); 246254225Speter sp->frp->name = n; 24719304Speter } 24819304Speter /* 24919304Speter * The file has a real name, it's no longer a 25019304Speter * temporary, clear the temporary file flags. 25119304Speter * 25219304Speter * !!! 25319304Speter * If we're writing the whole file, FR_NAMECHANGE 25419304Speter * will be cleared by the write routine -- this is 25519304Speter * historic practice. 25619304Speter */ 25719304Speter F_CLR(sp->frp, FR_TMPEXIT | FR_TMPFILE); 25819304Speter F_SET(sp->frp, FR_NAMECHANGE | FR_EXNAMED); 25919304Speter 26019304Speter /* Notify the screen. */ 26119304Speter (void)sp->gp->scr_rename(sp, sp->frp->name, 1); 26219304Speter } else 26319304Speter set_alt_name(sp, name); 26419304Speter break; 26519304Speter default: 266254225Speter INT2CHAR(sp, p, STRLEN(p) + 1, n, nlen); 267254225Speter ex_emsg(sp, n, EXM_FILECOUNT); 26819304Speter return (1); 26919304Speter } 27019304Speter 271254225Speter rc = file_write(sp, &cmdp->addr1, &cmdp->addr2, name, flags); 272254225Speter 273254225Speter free(name); 274254225Speter 275254225Speter return rc; 27619304Speter} 27719304Speter 27819304Speter/* 27919304Speter * ex_writefp -- 28019304Speter * Write a range of lines to a FILE *. 28119304Speter * 28219304Speter * PUBLIC: int ex_writefp __P((SCR *, 28319304Speter * PUBLIC: char *, FILE *, MARK *, MARK *, u_long *, u_long *, int)); 28419304Speter */ 28519304Speterint 286254225Speterex_writefp(SCR *sp, char *name, FILE *fp, MARK *fm, MARK *tm, u_long *nlno, u_long *nch, int silent) 28719304Speter{ 28819304Speter struct stat sb; 28919304Speter GS *gp; 29019304Speter u_long ccnt; /* XXX: can't print off_t portably. */ 29119304Speter recno_t fline, tline, lcnt; 29219304Speter size_t len; 29319304Speter int rval; 294254225Speter char *msg; 295254225Speter CHAR_T *p; 296254225Speter char *f; 297254225Speter size_t flen; 298254225Speter int isutf16; 29919304Speter 30019304Speter gp = sp->gp; 30119304Speter fline = fm->lno; 30219304Speter tline = tm->lno; 30319304Speter 30419304Speter if (nlno != NULL) { 30519304Speter *nch = 0; 30619304Speter *nlno = 0; 30719304Speter } 30819304Speter 30919304Speter /* 31019304Speter * The vi filter code has multiple processes running simultaneously, 31119304Speter * and one of them calls ex_writefp(). The "unsafe" function calls 31219304Speter * in this code are to db_get() and msgq(). Db_get() is safe, see 31319304Speter * the comment in ex_filter.c:ex_filter() for details. We don't call 31419304Speter * msgq if the multiple process bit in the EXF is set. 31519304Speter * 31619304Speter * !!! 31719304Speter * Historic vi permitted files of 0 length to be written. However, 31819304Speter * since the way vi got around dealing with "empty" files was to 31919304Speter * always have a line in the file no matter what, it wrote them as 32019304Speter * files of a single, empty line. We write empty files. 32119304Speter * 32219304Speter * "Alex, I'll take vi trivia for $1000." 32319304Speter */ 32419304Speter ccnt = 0; 32519304Speter lcnt = 0; 32619304Speter msg = "253|Writing..."; 327254225Speter 328254225Speter if (O_ISSET(sp, O_FILEENCODING)) { 329254225Speter isutf16 = !strncasecmp(O_STR(sp, O_FILEENCODING), "utf-16", 6); 330254225Speter isutf16 += !strncasecmp(O_STR(sp, O_FILEENCODING), "utf-16le", 8); 331254225Speter } else isutf16 = 0; 332254225Speter 333254225Speter if (tline != 0) { 334254225Speter if (isutf16 == 1 && fwrite("\xfe\xff", 1, 2, fp) != 2) 335254225Speter goto err; 336254225Speter if (isutf16 == 2 && fwrite("\xff\xfe", 1, 2, fp) != 2) 337254225Speter goto err; 33819304Speter for (; fline <= tline; ++fline, ++lcnt) { 33919304Speter /* Caller has to provide any interrupt message. */ 34019304Speter if ((lcnt + 1) % INTERRUPT_CHECK == 0) { 34119304Speter if (INTERRUPTED(sp)) 34219304Speter break; 34319304Speter if (!silent) { 34419304Speter gp->scr_busy(sp, msg, msg == NULL ? 34519304Speter BUSY_UPDATE : BUSY_ON); 34619304Speter msg = NULL; 34719304Speter } 34819304Speter } 34919304Speter if (db_get(sp, fline, DBG_FATAL, &p, &len)) 35019304Speter goto err; 351254225Speter INT2FILE(sp, p, len, f, flen); 352254225Speter if (fwrite(f, 1, flen, fp) != flen) 35319304Speter goto err; 35419304Speter ccnt += len; 355254225Speter /* UTF-16 w/o BOM is big-endian */ 356254225Speter switch (isutf16) { 357254225Speter case 1: /* UTF-16BE */ 358254225Speter if (fwrite("\0\x0a", 1, 2, fp) != 2) 359254225Speter goto done; 36019304Speter break; 361254225Speter case 2: /* UTF-16LE */ 362254225Speter if (fwrite("\x0a\0", 1, 2, fp) != 2) 363254225Speter goto done; 364254225Speter break; 365254225Speter default: 366254225Speter if (putc('\n', fp) != '\n') 367254225Speter goto done; 368254225Speter } 36919304Speter ++ccnt; 37019304Speter } 371254225Speter } 37219304Speter 373254225Speterdone: if (fflush(fp)) 37419304Speter goto err; 37519304Speter /* 37619304Speter * XXX 37719304Speter * I don't trust NFS -- check to make sure that we're talking to 37819304Speter * a regular file and sync so that NFS is forced to flush. 37919304Speter */ 38019304Speter if (!fstat(fileno(fp), &sb) && 38119304Speter S_ISREG(sb.st_mode) && fsync(fileno(fp))) 38219304Speter goto err; 38319304Speter 38419304Speter if (fclose(fp)) 38519304Speter goto err; 38619304Speter 38719304Speter rval = 0; 38819304Speter if (0) { 38919304Spetererr: if (!F_ISSET(sp->ep, F_MULTILOCK)) 39019304Speter msgq_str(sp, M_SYSERR, name, "%s"); 39119304Speter (void)fclose(fp); 39219304Speter rval = 1; 39319304Speter } 39419304Speter 39519304Speter if (!silent) 39619304Speter gp->scr_busy(sp, NULL, BUSY_OFF); 39719304Speter 39819304Speter /* Report the possibly partial transfer. */ 39919304Speter if (nlno != NULL) { 40019304Speter *nch = ccnt; 40119304Speter *nlno = lcnt; 40219304Speter } 40319304Speter return (rval); 40419304Speter} 405