/*- * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * 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[] = "@(#)ex_read.c 8.1 (Berkeley) 6/9/93"; #endif /* not lint */ #include <sys/types.h> #include <sys/stat.h> #include <ctype.h> #include <errno.h> #include <stdlib.h> #include <string.h> #include "vi.h" #include "excmd.h" /* * ex_read -- :read[!] [file] * :read [! cmd] * Read from a file or utility. */ int ex_read(sp, ep, cmdp) SCR *sp; EXF *ep; EXCMDARG *cmdp; { register char *p; struct stat sb; FILE *fp; MARK rm; int force; char *fname; /* If nothing, just read the file. */ if ((p = cmdp->string) == NULL) { if (F_ISSET(ep, F_NONAME)) { msgq(sp, M_ERR, "No filename from which to read."); return (1); } fname = ep->name; force = 0; goto noargs; } /* If "read!" it's a force from a file. */ if (*p == '!') { force = 1; ++p; } else force = 0; /* Skip whitespace. */ for (; *p && isspace(*p); ++p); /* If "read !" it's a pipe from a utility. */ if (*p == '!') { for (; *p && isspace(*p); ++p); if (*p == '\0') { msgq(sp, M_ERR, "Usage: %s.", cmdp->cmd->usage); return (1); } if (filtercmd(sp, ep, &cmdp->addr1, NULL, &rm, ++p, NOINPUT)) return (1); sp->lno = rm.lno; return (0); } /* Build an argv. */ if (buildargv(sp, ep, p, 1, &cmdp->argc, &cmdp->argv)) return (1); switch (cmdp->argc) { case 0: fname = ep->name; break; case 1: fname = (char *)cmdp->argv[0]; set_altfname(sp, fname); break; default: msgq(sp, M_ERR, "Usage: %s.", cmdp->cmd->usage); return (1); } /* Open the file. */ noargs: if ((fp = fopen(fname, "r")) == NULL || fstat(fileno(fp), &sb)) { msgq(sp, M_ERR, "%s: %s", fname, strerror(errno)); return (1); } /* If not a regular file, force must be set. */ if (!force && !S_ISREG(sb.st_mode)) { msgq(sp, M_ERR, "%s is not a regular file -- use ! to read it.", fname); return (1); } if (ex_readfp(sp, ep, fname, fp, &cmdp->addr1, &sp->rptlines[L_READ])) return (1); /* Set the cursor. */ sp->lno = cmdp->addr1.lno + 1; /* Set autoprint. */ F_SET(sp, S_AUTOPRINT); return (0); } /* * ex_readfp -- * Read lines into the file. */ int ex_readfp(sp, ep, fname, fp, fm, cntp) SCR *sp; EXF *ep; char *fname; FILE *fp; MARK *fm; recno_t *cntp; { size_t len; recno_t lno; int rval; /* * There is one very nasty special case. The historic vi code displays * a single space (or a '$' if the list option is set) for the first * line in an "empty" file. If we "insert" a line, that line gets * scrolled down, not repainted, so it's incorrect when we refresh the * the screen. This is really hard to find and fix in the vi code -- * the text input functions detect it explicitly and don't insert a new * line. The hack here is to repaint the screen if we're appending to * an empty file. */ if (file_lline(sp, ep, &lno)) return (1); if (lno == 0) F_SET(sp, S_REDRAW); /* * Add in the lines from the output. Insertion starts at the line * following the address. */ rval = 0; for (lno = fm->lno; !ex_getline(sp, fp, &len); ++lno) if (file_aline(sp, ep, 1, lno, sp->ibp, len)) { rval = 1; break; } if (ferror(fp)) { msgq(sp, M_ERR, "%s: %s", fname, strerror(errno)); rval = 1; } if (fclose(fp)) { msgq(sp, M_ERR, "%s: %s", fname, strerror(errno)); return (1); } if (rval) return (1); /* Return the number of lines read in. */ if (cntp != NULL) *cntp += lno - fm->lno; return (0); }