version 1.2, 2009/02/22 22:58:39 |
version 1.13, 2009/02/25 17:02:47 |
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/* $Id$ */ |
/* $Id$ */ |
/* |
/* |
* Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se> |
* Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se> |
* |
* |
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* PERFORMANCE OF THIS SOFTWARE. |
* PERFORMANCE OF THIS SOFTWARE. |
*/ |
*/ |
#include <assert.h> |
#include <assert.h> |
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#include <ctype.h> |
#include <err.h> |
#include <err.h> |
#include <getopt.h> |
#include <getopt.h> |
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#include <stdio.h> |
#include <stdlib.h> |
#include <stdlib.h> |
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#include <string.h> |
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#ifndef __OpenBSD__ |
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#include <time.h> |
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#endif |
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#include "mmain.h" |
#include "mmain.h" |
#include "term.h" |
#include "term.h" |
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#ifdef __NetBSD__ |
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#define xisspace(x) isspace((int)(x)) |
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#else |
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#define xisspace(x) isspace((x)) |
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#endif |
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enum termstyle { |
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STYLE_CLEAR, |
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STYLE_BOLD, |
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STYLE_UNDERLINE |
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}; |
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static void body(struct termp *, |
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struct termpair *, |
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const struct mdoc_meta *, |
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const struct mdoc_node *); |
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static void header(struct termp *, |
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const struct mdoc_meta *); |
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static void footer(struct termp *, |
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const struct mdoc_meta *); |
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static void pword(struct termp *, const char *, size_t); |
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static void pescape(struct termp *, |
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const char *, size_t *, size_t); |
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static void nescape(struct termp *, |
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const char *, size_t); |
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static void chara(struct termp *, char); |
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static void stringa(struct termp *, const char *); |
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static void style(struct termp *, enum termstyle); |
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#ifdef __linux__ |
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extern size_t strlcat(char *, const char *, size_t); |
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extern size_t strlcpy(char *, const char *, size_t); |
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#endif |
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int |
int |
main(int argc, char *argv[]) |
main(int argc, char *argv[]) |
{ |
{ |
struct mmain *p; |
struct mmain *p; |
const struct mdoc *mdoc; |
const struct mdoc *mdoc; |
int c; |
struct termp termp; |
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extern int optreset; |
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extern int optind; |
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p = mmain_alloc(); |
p = mmain_alloc(); |
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if ( ! mmain_getopt(p, argc, argv, "")) |
if ( ! mmain_getopt(p, argc, argv, NULL, NULL, NULL, NULL)) |
mmain_exit(p, 1); |
mmain_exit(p, 1); |
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optreset = optind = 1; |
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while (-1 != (c = getopt(argc, argv, ""))) |
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switch (c) { |
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default: |
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mmain_usage(""); |
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mmain_exit(p, 1); |
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/* NOTREACHED */ |
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} |
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if (NULL == (mdoc = mmain_mdoc(p))) |
if (NULL == (mdoc = mmain_mdoc(p))) |
mmain_exit(p, 1); |
mmain_exit(p, 1); |
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termprint(mdoc_node(mdoc), mdoc_meta(mdoc)); |
termp.maxrmargin = 80; /* XXX */ |
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termp.rmargin = termp.maxrmargin; |
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termp.maxcols = 1024; |
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termp.offset = termp.col = 0; |
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termp.flags = TERMP_NOSPACE; |
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if (NULL == (termp.buf = malloc(termp.maxcols))) |
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err(1, "malloc"); |
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header(&termp, mdoc_meta(mdoc)); |
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body(&termp, NULL, mdoc_meta(mdoc), mdoc_node(mdoc)); |
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footer(&termp, mdoc_meta(mdoc)); |
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free(termp.buf); |
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mmain_exit(p, 0); |
mmain_exit(p, 0); |
/* NOTREACHED */ |
/* NOTREACHED */ |
} |
} |
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void |
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flushln(struct termp *p) |
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{ |
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size_t i, j, vsz, vis, maxvis; |
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/* |
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* First, establish the maximum columns of "visible" content. |
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* This is usually the difference between the right-margin and |
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* an indentation, but can be, for tagged lists or columns, a |
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* small set of values. |
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*/ |
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assert(p->offset < p->rmargin); |
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maxvis = p->rmargin - p->offset; |
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vis = 0; |
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/* |
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* If in the standard case (left-justified), then begin with our |
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* indentation, otherwise (columns, etc.) just start spitting |
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* out text. |
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*/ |
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if ( ! (p->flags & TERMP_NOLPAD)) |
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/* LINTED */ |
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for (j = 0; j < p->offset; j++) |
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putchar(' '); |
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/* |
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* If we're literal, print out verbatim. |
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*/ |
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if (p->flags & TERMP_LITERAL) { |
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/* FIXME: count non-printing chars. */ |
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for (i = 0; i < p->col; i++) |
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putchar(p->buf[i]); |
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putchar('\n'); |
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p->col = 0; |
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return; |
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} |
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for (i = 0; i < p->col; i++) { |
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/* |
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* Count up visible word characters. Control sequences |
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* (starting with the CSI) aren't counted. |
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*/ |
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assert( ! xisspace(p->buf[i])); |
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/* LINTED */ |
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for (j = i, vsz = 0; j < p->col; j++) { |
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if (xisspace(p->buf[j])) |
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break; |
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else if (27 == p->buf[j]) { |
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assert(j + 4 <= p->col); |
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j += 3; |
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} else |
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vsz++; |
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} |
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assert(vsz > 0); |
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/* |
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* If a word is too long and we're within a line, put it |
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* on the next line. Puke if we're being asked to write |
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* something that will exceed the right margin (i.e., |
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* from a fresh line or when we're not allowed to break |
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* the line with TERMP_NOBREAK). |
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*/ |
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if (vis && vis + vsz >= maxvis) { |
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/* FIXME */ |
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if (p->flags & TERMP_NOBREAK) |
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errx(1, "word breaks right margin"); |
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putchar('\n'); |
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for (j = 0; j < p->offset; j++) |
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putchar(' '); |
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vis = 0; |
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} else if (vis + vsz >= maxvis) |
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/* FIXME */ |
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errx(1, "word breaks right margin"); |
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/* |
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* Write out the word and a trailing space. Omit the |
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* space if we're the last word in the line. |
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*/ |
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for ( ; i < p->col; i++) { |
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if (xisspace(p->buf[i])) |
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break; |
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putchar(p->buf[i]); |
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} |
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vis += vsz; |
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if (i < p->col) { |
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putchar(' '); |
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vis++; |
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} |
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} |
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/* |
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* If we're not to right-marginalise it (newline), then instead |
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* pad to the right margin and stay off. |
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*/ |
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if (p->flags & TERMP_NOBREAK) { |
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for ( ; vis < maxvis; vis++) |
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putchar(' '); |
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} else |
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putchar('\n'); |
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p->col = 0; |
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} |
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void |
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newln(struct termp *p) |
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{ |
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/* |
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* A newline only breaks an existing line; it won't assert |
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* vertical space. |
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*/ |
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p->flags |= TERMP_NOSPACE; |
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if (0 == p->col) { |
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p->flags &= ~TERMP_NOLPAD; |
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return; |
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} |
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flushln(p); |
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p->flags &= ~TERMP_NOLPAD; |
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} |
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void |
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vspace(struct termp *p) |
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{ |
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/* |
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* Asserts a vertical space (a full, empty line-break between |
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* lines). |
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*/ |
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newln(p); |
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putchar('\n'); |
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} |
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static void |
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stringa(struct termp *p, const char *s) |
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{ |
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/* XXX - speed up if not passing to chara. */ |
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for ( ; *s; s++) |
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chara(p, *s); |
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} |
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static void |
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chara(struct termp *p, char c) |
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{ |
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/* TODO: dynamically expand the buffer. */ |
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if (p->col + 1 >= p->maxcols) |
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errx(1, "line overrun"); |
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p->buf[(p->col)++] = c; |
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} |
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static void |
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style(struct termp *p, enum termstyle esc) |
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{ |
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if (p->col + 4 >= p->maxcols) |
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errx(1, "line overrun"); |
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p->buf[(p->col)++] = 27; |
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p->buf[(p->col)++] = '['; |
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switch (esc) { |
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case (STYLE_CLEAR): |
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p->buf[(p->col)++] = '0'; |
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break; |
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case (STYLE_BOLD): |
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p->buf[(p->col)++] = '1'; |
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break; |
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case (STYLE_UNDERLINE): |
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p->buf[(p->col)++] = '4'; |
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break; |
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default: |
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abort(); |
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/* NOTREACHED */ |
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} |
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p->buf[(p->col)++] = 'm'; |
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} |
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static void |
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nescape(struct termp *p, const char *word, size_t len) |
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{ |
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switch (len) { |
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case (2): |
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if ('r' == word[0] && 'B' == word[1]) |
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chara(p, ']'); |
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else if ('l' == word[0] && 'B' == word[1]) |
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chara(p, '['); |
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else if ('<' == word[0] && '-' == word[1]) |
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stringa(p, "<-"); |
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else if ('-' == word[0] && '>' == word[1]) |
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stringa(p, "->"); |
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else if ('l' == word[0] && 'q' == word[1]) |
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chara(p, '\"'); |
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else if ('r' == word[0] && 'q' == word[1]) |
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chara(p, '\"'); |
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else if ('b' == word[0] && 'u' == word[1]) |
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chara(p, 'o'); |
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break; |
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default: |
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break; |
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} |
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} |
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static void |
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pescape(struct termp *p, const char *word, size_t *i, size_t len) |
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{ |
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size_t j; |
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(*i)++; |
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assert(*i < len); |
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if ('(' == word[*i]) { |
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/* Two-character escapes. */ |
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(*i)++; |
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assert(*i + 1 < len); |
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nescape(p, &word[*i], 2); |
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(*i)++; |
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return; |
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} else if ('[' != word[*i]) { |
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/* One-character escapes. */ |
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switch (word[*i]) { |
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case ('\\'): |
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/* FALLTHROUGH */ |
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case ('\''): |
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/* FALLTHROUGH */ |
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case ('`'): |
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/* FALLTHROUGH */ |
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case ('-'): |
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/* FALLTHROUGH */ |
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case (' '): |
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/* FALLTHROUGH */ |
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case ('.'): |
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chara(p, word[*i]); |
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default: |
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break; |
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} |
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return; |
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} |
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(*i)++; |
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for (j = 0; word[*i] && ']' != word[*i]; (*i)++, j++) |
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/* Loop... */ ; |
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nescape(p, &word[*i - j], j); |
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} |
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static void |
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pword(struct termp *p, const char *word, size_t len) |
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{ |
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size_t i; |
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/*assert(len > 0);*/ /* Can be, if literal. */ |
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if ( ! (p->flags & TERMP_NOSPACE) && |
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! (p->flags & TERMP_LITERAL)) |
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chara(p, ' '); |
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if ( ! (p->flags & TERMP_NONOSPACE)) |
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p->flags &= ~TERMP_NOSPACE; |
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if (p->flags & TERMP_BOLD) |
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style(p, STYLE_BOLD); |
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if (p->flags & TERMP_UNDERLINE) |
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style(p, STYLE_UNDERLINE); |
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for (i = 0; i < len; i++) { |
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if ('\\' == word[i]) { |
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pescape(p, word, &i, len); |
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continue; |
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} |
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chara(p, word[i]); |
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} |
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if (p->flags & TERMP_BOLD || |
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p->flags & TERMP_UNDERLINE) |
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style(p, STYLE_CLEAR); |
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} |
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void |
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word(struct termp *p, const char *word) |
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{ |
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size_t i, j, len; |
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if (p->flags & TERMP_LITERAL) { |
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pword(p, word, strlen(word)); |
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return; |
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} |
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len = strlen(word); |
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assert(len > 0); |
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if (mdoc_isdelim(word)) { |
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if ( ! (p->flags & TERMP_IGNDELIM)) |
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p->flags |= TERMP_NOSPACE; |
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p->flags &= ~TERMP_IGNDELIM; |
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} |
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/* LINTED */ |
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for (j = i = 0; i < len; i++) { |
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if ( ! xisspace(word[i])) { |
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j++; |
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continue; |
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} |
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if (0 == j) |
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continue; |
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assert(i >= j); |
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pword(p, &word[i - j], j); |
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j = 0; |
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} |
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if (j > 0) { |
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assert(i >= j); |
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pword(p, &word[i - j], j); |
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} |
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} |
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static void |
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body(struct termp *p, struct termpair *ppair, |
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const struct mdoc_meta *meta, |
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const struct mdoc_node *node) |
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{ |
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int dochild; |
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struct termpair pair; |
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/* Pre-processing. */ |
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dochild = 1; |
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pair.ppair = ppair; |
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pair.type = 0; |
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pair.offset = pair.rmargin = 0; |
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pair.flag = 0; |
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pair.count = 0; |
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if (MDOC_TEXT != node->type) { |
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if (termacts[node->tok].pre) |
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if ( ! (*termacts[node->tok].pre)(p, &pair, meta, node)) |
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dochild = 0; |
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} else /* MDOC_TEXT == node->type */ |
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word(p, node->data.text.string); |
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/* Children. */ |
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if (TERMPAIR_FLAG & pair.type) |
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p->flags |= pair.flag; |
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if (dochild && node->child) |
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body(p, &pair, meta, node->child); |
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if (TERMPAIR_FLAG & pair.type) |
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p->flags &= ~pair.flag; |
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/* Post-processing. */ |
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if (MDOC_TEXT != node->type) |
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if (termacts[node->tok].post) |
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(*termacts[node->tok].post)(p, &pair, meta, node); |
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/* Siblings. */ |
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if (node->next) |
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body(p, ppair, meta, node->next); |
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} |
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static void |
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footer(struct termp *p, const struct mdoc_meta *meta) |
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{ |
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struct tm *tm; |
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char *buf, *os; |
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size_t sz, osz, ssz, i; |
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if (NULL == (buf = malloc(p->rmargin))) |
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err(1, "malloc"); |
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if (NULL == (os = malloc(p->rmargin))) |
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err(1, "malloc"); |
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tm = localtime(&meta->date); |
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#ifdef __OpenBSD__ |
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if (NULL == strftime(buf, p->rmargin, "%B %d, %Y", tm)) |
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#else |
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if (0 == strftime(buf, p->rmargin, "%B %d, %Y", tm)) |
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#endif |
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err(1, "strftime"); |
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osz = strlcpy(os, meta->os, p->rmargin); |
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sz = strlen(buf); |
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ssz = sz + osz + 1; |
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if (ssz > p->rmargin) { |
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ssz -= p->rmargin; |
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assert(ssz <= osz); |
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os[osz - ssz] = 0; |
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ssz = 1; |
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} else |
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ssz = p->rmargin - ssz + 1; |
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printf("\n"); |
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printf("%s", os); |
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for (i = 0; i < ssz; i++) |
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printf(" "); |
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printf("%s\n", buf); |
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fflush(stdout); |
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free(buf); |
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free(os); |
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} |
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static void |
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header(struct termp *p, const struct mdoc_meta *meta) |
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{ |
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char *buf, *title; |
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const char *pp; |
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if (NULL == (buf = malloc(p->rmargin))) |
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err(1, "malloc"); |
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if (NULL == (title = malloc(p->rmargin))) |
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err(1, "malloc"); |
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if (NULL == (pp = mdoc_vol2a(meta->vol))) |
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switch (meta->msec) { |
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case (MSEC_1): |
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/* FALLTHROUGH */ |
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case (MSEC_6): |
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/* FALLTHROUGH */ |
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case (MSEC_7): |
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pp = mdoc_vol2a(VOL_URM); |
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break; |
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case (MSEC_8): |
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pp = mdoc_vol2a(VOL_SMM); |
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break; |
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case (MSEC_2): |
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/* FALLTHROUGH */ |
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case (MSEC_3): |
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/* FALLTHROUGH */ |
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case (MSEC_4): |
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/* FALLTHROUGH */ |
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case (MSEC_5): |
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pp = mdoc_vol2a(VOL_PRM); |
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break; |
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case (MSEC_9): |
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pp = mdoc_vol2a(VOL_KM); |
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break; |
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default: |
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/* FIXME: capitalise. */ |
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if (NULL == (pp = mdoc_msec2a(meta->msec))) |
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pp = mdoc_msec2a(MSEC_local); |
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break; |
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} |
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if (mdoc_arch2a(meta->arch)) |
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(void)snprintf(buf, p->rmargin, "%s(%s)", |
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pp, mdoc_arch2a(meta->arch)); |
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else |
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(void)strlcpy(buf, pp, p->rmargin); |
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pp = mdoc_msec2a(meta->msec); |
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(void)snprintf(title, p->rmargin, "%s(%s)", |
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meta->title, pp ? pp : ""); |
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p->offset = 0; |
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p->rmargin = (p->maxrmargin - strlen(buf)) / 2; |
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p->flags |= TERMP_NOBREAK; |
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p->flags |= TERMP_NOSPACE; |
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word(p, title); |
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flushln(p); |
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p->offset = p->rmargin; |
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p->rmargin += strlen(buf); |
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word(p, buf); |
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flushln(p); |
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exit(1); |
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p->offset = p->rmargin; |
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p->rmargin = p->maxrmargin; |
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p->flags &= ~TERMP_NOBREAK; |
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word(p, title); |
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flushln(p); |
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p->rmargin = p->maxrmargin; |
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p->offset = 0; |
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p->flags &= ~TERMP_NOSPACE; |
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free(title); |
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free(buf); |
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} |