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Diffstat (limited to 'usr.sbin/lpr/filters/lpf.c')
| -rw-r--r-- | usr.sbin/lpr/filters/lpf.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/usr.sbin/lpr/filters/lpf.c b/usr.sbin/lpr/filters/lpf.c new file mode 100644 index 000000000000..5a036de4fb6d --- /dev/null +++ b/usr.sbin/lpr/filters/lpf.c @@ -0,0 +1,206 @@ +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 1983, 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. 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. + */ + +#include "lp.cdefs.h" /* A cross-platform version of <sys/cdefs.h> */ +/* + * filter which reads the output of nroff and converts lines + * with ^H's to overwritten lines. Thus this works like 'ul' + * but is much better: it can handle more than 2 overwrites + * and it is written with some style. + * modified by kls to use register references instead of arrays + * to try to gain a little speed. + */ + +#include <signal.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> + +#define MAXWIDTH 132 +#define MAXREP 10 + +static char buf[MAXREP][MAXWIDTH]; +static int maxcol[MAXREP] = {-1}; +static int lineno; +static int width = 132; /* default line length */ +static int length = 66; /* page length */ +static int indent; /* indentation length */ +static int npages = 1; +static int literal; /* print control characters */ +static char *name; /* user's login name */ +static char *host; /* user's machine name */ +static char *acctfile; /* accounting information file */ + +int +main(int argc, char *argv[]) +{ + register FILE *p = stdin, *o = stdout; + register int i, col; + register char *cp; + int done, linedone, maxrep; + char *limit; + int ch; + + while (--argc) { + if (*(cp = *++argv) == '-') { + switch (cp[1]) { + case 'n': + argc--; + name = *++argv; + break; + + case 'h': + argc--; + host = *++argv; + break; + + case 'w': + if ((i = atoi(&cp[2])) > 0 && i <= MAXWIDTH) + width = i; + break; + + case 'l': + length = atoi(&cp[2]); + break; + + case 'i': + indent = atoi(&cp[2]); + break; + + case 'c': /* Print control chars */ + literal++; + break; + } + } else + acctfile = cp; + } + + memset(buf, ' ', sizeof(buf)); + done = 0; + + while (!done) { + col = indent; + maxrep = -1; + linedone = 0; + while (!linedone) { + switch (ch = getc(p)) { + case EOF: + linedone = done = 1; + ch = '\n'; + break; + + case '\f': + lineno = length; + case '\n': + if (maxrep < 0) + maxrep = 0; + linedone = 1; + break; + + case '\b': + if (--col < indent) + col = indent; + break; + + case '\r': + col = indent; + break; + + case '\t': + col = ((col - indent) | 07) + indent + 1; + break; + + case '\031': + /* + * lpd needs to use a different filter to + * print data so stop what we are doing and + * wait for lpd to restart us. + */ + if ((ch = getchar()) == '\1') { + fflush(stdout); + kill(getpid(), SIGSTOP); + break; + } else { + ungetc(ch, stdin); + ch = '\031'; + } + + default: + if (col >= width || (!literal && ch < ' ')) { + col++; + break; + } + cp = &buf[0][col]; + for (i = 0; i < MAXREP; i++) { + if (i > maxrep) + maxrep = i; + if (*cp == ' ') { + *cp = ch; + if (col > maxcol[i]) + maxcol[i] = col; + break; + } + cp += MAXWIDTH; + } + col++; + break; + } + } + + /* print out lines */ + for (i = 0; i <= maxrep; i++) { + for (cp = buf[i], limit = cp+maxcol[i]; cp <= limit;) { + putc(*cp, o); + *cp++ = ' '; + } + if (i < maxrep) + putc('\r', o); + else + putc(ch, o); + if (++lineno >= length) { + fflush(o); + npages++; + lineno = 0; + } + maxcol[i] = -1; + } + } + if (lineno) { /* be sure to end on a page boundary */ + putchar('\f'); + npages++; + } + if (name && acctfile && access(acctfile, 02) >= 0 && + freopen(acctfile, "a", stdout) != NULL) { + printf("%7.2f\t%s:%s\n", (float)npages, host, name); + } + exit(0); +} |