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Diffstat (limited to 'doc_cmds/colcrt/colcrt.c')
| -rw-r--r-- | doc_cmds/colcrt/colcrt.c | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/doc_cmds/colcrt/colcrt.c b/doc_cmds/colcrt/colcrt.c new file mode 100644 index 0000000..2e5570b --- /dev/null +++ b/doc_cmds/colcrt/colcrt.c @@ -0,0 +1,287 @@ +/* + * Copyright (c) 1980, 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 const char copyright[] = +"@(#) Copyright (c) 1980, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif + +#if 0 +#ifndef lint +static char sccsid[] = "@(#)colcrt.c 8.1 (Berkeley) 6/6/93"; +#endif +#endif + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD: src/usr.bin/colcrt/colcrt.c,v 1.18 2004/07/31 06:22:57 tjr Exp $"); + +#include <err.h> +#include <locale.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <wchar.h> + +/* + * colcrt - replaces col for crts with new nroff esp. when using tbl. + * Bill Joy UCB July 14, 1977 + * + * This filter uses a screen buffer, 267 half-lines by 132 columns. + * It interprets the up and down sequences generated by the new + * nroff when used with tbl and by \u \d and \r. + * General overstriking doesn't work correctly. + * Underlining is split onto multiple lines, etc. + * + * Option - suppresses all underlining. + * Option -2 forces printing of all half lines. + */ + +wchar_t page[267][132]; + +int outline = 1; +int outcol; + +char suppresul; +char printall; + +static void move(int, int); +static void pflush(int); +static int plus(wchar_t, wchar_t); +static void usage(void); + +int +main(int argc, char *argv[]) +{ + wint_t c; + wchar_t *cp, *dp; + int ch, i, w; + + setlocale(LC_ALL, ""); + + while ((ch = getopt(argc, argv, "-2")) != -1) + switch (ch) { + case '-': + suppresul = 1; + break; + case '2': + printall = 1; + break; + default: + usage(); + } + argc -= optind; + argv += optind; + + do { + if (argc > 0) { + if (freopen(argv[0], "r", stdin) == NULL) { + fflush(stdout); + err(1, "%s", argv[0]); + } + argc--; + argv++; + } + for (;;) { + c = getwc(stdin); + if (c == WEOF) { + pflush(outline); + fflush(stdout); + break; + } + switch (c) { + case '\n': + if (outline >= 265) + pflush(62); + outline += 2; + outcol = 0; + continue; + case '\016': + case '\017': + continue; + case 033: + c = getwc(stdin); + switch (c) { + case '9': + if (outline >= 266) + pflush(62); + outline++; + continue; + case '8': + if (outline >= 1) + outline--; + continue; + case '7': + outline -= 2; + if (outline < 0) + outline = 0; + continue; + default: + continue; + } + case '\b': + if (outcol) + outcol--; + continue; + case '\t': + outcol += 8; + outcol &= ~7; + outcol--; + c = ' '; + default: + if ((w = wcwidth(c)) <= 0) + w = 1; /* XXX */ + if (outcol + w > 132) { + outcol += w; + continue; + } + cp = &page[outline][outcol]; + outcol += w; + if (c == '_') { + if (suppresul) + continue; + cp += 132; + c = '-'; + } + if (*cp == 0) { + for (i = 0; i < w; i++) + cp[i] = c; + dp = cp - (outcol - w); + for (cp--; cp >= dp && *cp == 0; cp--) + *cp = ' '; + } else { + if (plus(c, *cp) || plus(*cp, c)) + *cp = '+'; + else if (*cp == ' ' || *cp == 0) { + for (i = 1; i < w; i++) + if (cp[i] != ' ' && + cp[i] != 0) + goto cont; + for (i = 0; i < w; i++) + cp[i] = c; + } + } +cont: + continue; + } + } + if (ferror(stdin)) + err(1, NULL); + } while (argc > 0); + fflush(stdout); + exit(0); +} + +static void +usage(void) +{ + fprintf(stderr, "usage: colcrt [-] [-2] [file ...]\n"); + exit(1); +} + +static int +plus(wchar_t c, wchar_t d) +{ + + return ((c == '|' && d == '-') || d == '_'); +} + +static void +pflush(int ol) +{ + static int first; + int i; + wchar_t *cp; + char lastomit; + int l, w; + + l = ol; + lastomit = 0; + if (l > 266) + l = 266; + else + l |= 1; + for (i = first | 1; i < l; i++) { + move(i, i - 1); + move(i, i + 1); + } + for (i = first; i < l; i++) { + cp = page[i]; + if (printall == 0 && lastomit == 0 && *cp == 0) { + lastomit = 1; + continue; + } + lastomit = 0; + while (*cp != L'\0') { + if ((w = wcwidth(*cp)) > 0) { + putwchar(*cp); + cp += w; + } else + cp++; + } + putwchar(L'\n'); + } + wmemcpy(page[0], page[ol], (267 - ol) * 132); + wmemset(page[267- ol], L'\0', ol * 132); + outline -= ol; + outcol = 0; + first = 1; +} + +static void +move(int l, int m) +{ + wchar_t *cp, *dp; + + for (cp = page[l], dp = page[m]; *cp; cp++, dp++) { + switch (*cp) { + case '|': + if (*dp != ' ' && *dp != '|' && *dp != 0) + return; + break; + case ' ': + break; + default: + return; + } + } + if (*cp == 0) { + for (cp = page[l], dp = page[m]; *cp; cp++, dp++) + if (*cp == '|') + *dp = '|'; + else if (*dp == 0) + *dp = ' '; + page[l][0] = 0; + } +} |