/*- * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Rodney Ruddock of the University of Guelph. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint static char sccsid[] = "@(#)w.c 8.1 (Berkeley) 5/31/93"; #endif /* not lint */ #include <sys/types.h> #include <limits.h> #include <regex.h> #include <setjmp.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #ifdef DBI #include <db.h> #endif #include "ed.h" #include "extern.h" /* * Write the contents of the buffer out to the real file (spec'd or * remembered). If 'w' then overwrite, if 'W' append to the file. 'W' * is probably _the_ command that most editors don't have, and it's * so(!) useful. The 'wq' works as 'w' but 'q' immediately follows. * Shame on POSIX for not including 'W' and 'wq', they're not that * hard to implement; yaaa! BSD for keeping it! :-) */ void w(inputt, errnum) FILE *inputt; int *errnum; { FILE *l_fp; int l_ttl = 0, l_q_flag = 0, l_sl, l_bang_flag=0; char *filename_read=NULL, *l_temp; if (Start_default && End_default) { Start = top; End = bottom; } else if (Start_default) Start = End; Start_default = End_default = 0; l_sl = ss; ss = getc(inputt); if (ss == 'q') /* "wq" and "Wq" command */ l_q_flag = 1; else ungetc(ss, inputt); l_temp = filename(inputt, errnum); if (*errnum == 1) filename_read = l_temp; else if (*errnum == -2) { while (((ss = getc(inputt)) != '\n') || (ss == EOF)); filename_read = filename_current; } else if (*errnum < 0) return; *errnum = 0; if (filename_current == NULL) { if (filename_read == NULL) { strcpy(help_msg, "no filename given"); *errnum = -1; ungetc('\n', inputt); return; } else filename_current = filename_read; } sigspecial++; if (l_temp && l_temp[FILENAME_LEN+1]) { /* bang flag */ FILE *popen(); if (l_temp[0] == '\0') { strcpy(help_msg, "no command given"); *errnum = -1; sigspecial--; return; } if ((l_fp = popen(l_temp, "w")) == NULL) { strcpy(help_msg, "error executing command"); *errnum = -1; if (l_fp != NULL) pclose(l_fp); sigspecial--; return; } l_bang_flag = 1; } else if (l_sl == 'W') l_fp = fopen(filename_read, "a"); else l_fp = fopen(filename_read, "w"); if (l_fp == NULL) { strcpy(help_msg, "cannot write to file"); *errnum = -1; ungetc('\n', inputt); sigspecial--; return; } sigspecial--; if (sigint_flag && (!sigspecial)) goto point; /* Write it out and get a report on the number of bytes written. */ if (Start == NULL) l_ttl = 0; else l_ttl = edwrite(l_fp, Start, End); if (explain_flag > 0) /* For -s option. */ printf("%d\n", l_ttl); point: if (l_bang_flag) pclose(l_fp); else fclose(l_fp); if (filename_read != filename_current) free(filename_read); if ((Start == top) && (End == bottom)) change_flag = 0L; *errnum = 1; if (l_q_flag) { /* For "wq" and "Wq". */ ungetc('\n', inputt); ss = (int) 'q'; q(inputt, errnum); } } /* * Actually writes out the contents of the buffer to the specified * STDIO file pointer for the range of lines specified. */ int edwrite(fp, begi, fini) FILE *fp; LINE *begi, *fini; { register int l_ttl = 0; for (;;) { get_line(begi->handle, begi->len); if (sigint_flag && (!sigspecial)) break; sigspecial++; /* Fwrite is about 20+% faster than fprintf -- no surprise. */ fwrite(text, sizeof(char), begi->len, fp); fputc('\n', fp); l_ttl = l_ttl + (begi->len) + 1; if (begi == fini) break; else begi = begi->below; sigspecial--; if (sigint_flag && (!sigspecial)) break; } return (l_ttl); }