-/* $Id: term.c,v 1.2 2009/02/20 23:35:36 kristaps Exp $ */
+/* $Id: term.c,v 1.197 2011/05/24 21:31:23 kristaps Exp $ */
/*
- * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the
- * above copyright notice and this permission notice appear in all
- * copies.
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
*
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
- * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
- * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/types.h>
+
#include <assert.h>
#include <ctype.h>
-#include <curses.h>
-#include <err.h>
-#include <stdlib.h>
+#include <stdint.h>
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
-#include <term.h>
-#include <unistd.h>
-
-#include "private.h"
-
-
-enum termesc {
- ESC_CLEAR,
- ESC_BOLD,
- ESC_UNDERLINE
-};
-
-struct termp {
- size_t maxvisible;
- size_t maxcols;
- size_t indent;
- size_t col;
- int flags;
-#define TERMP_BOLD (1 << 0)
-#define TERMP_UNDERLINE (1 << 1)
-#define TERMP_NOSPACE (1 << 2)
- char *buf;
-};
-
-struct termact {
- int (*pre)(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
- int (*post)(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
-};
-
-static void termprint_r(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
-static void termprint_header(struct termp *,
- const struct mdoc_meta *);
-static void termprint_footer(struct termp *,
- const struct mdoc_meta *);
-
-static void newln(struct termp *);
-static void vspace(struct termp *);
-static void pword(struct termp *, const char *, size_t);
-static void word(struct termp *, const char *);
-
-static int termp_it_pre(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
-static int termp_ns_pre(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
-static int termp_pp_pre(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
-static int termp_fl_pre(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
-static int termp_op_pre(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
-static int termp_op_post(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
-static int termp_bl_post(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
-static int termp_sh_post(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
-static int termp_sh_pre(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
-static int termp_nd_pre(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
-static int termp_bold_pre(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
-static int termp_under_pre(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
-static int termp_bold_post(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
-static int termp_under_post(struct termp *,
- const struct mdoc_meta *,
- const struct mdoc_node *);
-
-const struct termact termacts[MDOC_MAX] = {
- { NULL, NULL }, /* \" */
- { NULL, NULL }, /* Dd */
- { NULL, NULL }, /* Dt */
- { NULL, NULL }, /* Os */
- { termp_sh_pre, termp_sh_post }, /* Sh */
- { NULL, NULL }, /* Ss */
- { termp_pp_pre, NULL }, /* Pp */
- { NULL, NULL }, /* D1 */
- { NULL, NULL }, /* Dl */
- { NULL, NULL }, /* Bd */
- { NULL, NULL }, /* Ed */
- { NULL, termp_bl_post }, /* Bl */
- { NULL, NULL }, /* El */
- { termp_it_pre, NULL }, /* It */
- { NULL, NULL }, /* Ad */
- { NULL, NULL }, /* An */
- { termp_under_pre, termp_under_post }, /* Ar */
- { NULL, NULL }, /* Cd */
- { NULL, NULL }, /* Cm */
- { NULL, NULL }, /* Dv */
- { NULL, NULL }, /* Er */
- { NULL, NULL }, /* Ev */
- { NULL, NULL }, /* Ex */
- { NULL, NULL }, /* Fa */
- { NULL, NULL }, /* Fd */
- { termp_fl_pre, termp_bold_post }, /* Fl */
- { NULL, NULL }, /* Fn */
- { NULL, NULL }, /* Ft */
- { NULL, NULL }, /* Ic */
- { NULL, NULL }, /* In */
- { NULL, NULL }, /* Li */
- { termp_nd_pre, NULL }, /* Nd */
- { termp_bold_pre, termp_bold_post }, /* Nm */
- { termp_op_pre, termp_op_post }, /* Op */
- { NULL, NULL }, /* Ot */
- { NULL, NULL }, /* Pa */
- { NULL, NULL }, /* Rv */
- { NULL, NULL }, /* St */
- { NULL, NULL }, /* Va */
- { NULL, NULL }, /* Vt */
- { NULL, NULL }, /* Xr */
- { NULL, NULL }, /* %A */
- { NULL, NULL }, /* %B */
- { NULL, NULL }, /* %D */
- { NULL, NULL }, /* %I */
- { NULL, NULL }, /* %J */
- { NULL, NULL }, /* %N */
- { NULL, NULL }, /* %O */
- { NULL, NULL }, /* %P */
- { NULL, NULL }, /* %R */
- { NULL, NULL }, /* %T */
- { NULL, NULL }, /* %V */
- { NULL, NULL }, /* Ac */
- { NULL, NULL }, /* Ao */
- { NULL, NULL }, /* Aq */
- { NULL, NULL }, /* At */
- { NULL, NULL }, /* Bc */
- { NULL, NULL }, /* Bf */
- { NULL, NULL }, /* Bo */
- { NULL, NULL }, /* Bq */
- { NULL, NULL }, /* Bsx */
- { NULL, NULL }, /* Bx */
- { NULL, NULL }, /* Db */
- { NULL, NULL }, /* Dc */
- { NULL, NULL }, /* Do */
- { NULL, NULL }, /* Dq */
- { NULL, NULL }, /* Ec */
- { NULL, NULL }, /* Ef */
- { NULL, NULL }, /* Em */
- { NULL, NULL }, /* Eo */
- { NULL, NULL }, /* Fx */
- { NULL, NULL }, /* Ms */
- { NULL, NULL }, /* No */
- { termp_ns_pre, NULL }, /* Ns */
- { NULL, NULL }, /* Nx */
- { NULL, NULL }, /* Ox */
- { NULL, NULL }, /* Pc */
- { NULL, NULL }, /* Pf */
- { NULL, NULL }, /* Po */
- { NULL, NULL }, /* Pq */
- { NULL, NULL }, /* Qc */
- { NULL, NULL }, /* Ql */
- { NULL, NULL }, /* Qo */
- { NULL, NULL }, /* Qq */
- { NULL, NULL }, /* Re */
- { NULL, NULL }, /* Rs */
- { NULL, NULL }, /* Sc */
- { NULL, NULL }, /* So */
- { NULL, NULL }, /* Sq */
- { NULL, NULL }, /* Sm */
- { NULL, NULL }, /* Sx */
- { NULL, NULL }, /* Sy */
- { NULL, NULL }, /* Tn */
- { NULL, NULL }, /* Ux */
- { NULL, NULL }, /* Xc */
- { NULL, NULL }, /* Xo */
- { NULL, NULL }, /* Fo */
- { NULL, NULL }, /* Fc */
- { NULL, NULL }, /* Oo */
- { NULL, NULL }, /* Oc */
- { NULL, NULL }, /* Bk */
- { NULL, NULL }, /* Ek */
- { NULL, NULL }, /* Bt */
- { NULL, NULL }, /* Hf */
- { NULL, NULL }, /* Fr */
- { NULL, NULL }, /* Ud */
-};
-
-
-static void
-flush(struct termp *p)
-{
- size_t i, j, vsz, vis, maxvis;
- maxvis = p->maxvisible - (p->indent * 4);
- vis = 0;
+#include "mandoc.h"
+#include "out.h"
+#include "term.h"
+#include "main.h"
- for (j = 0; j < (p->indent * 4); j++)
- putchar(' ');
+static void adjbuf(struct termp *p, int);
+static void bufferc(struct termp *, char);
+static void encode(struct termp *, const char *, size_t);
+static void encode1(struct termp *, int);
- for (i = 0; i < p->col; i++) {
- for (j = i, vsz = 0; j < p->col; j++) {
- if (isspace(p->buf[j]))
- break;
- else if (27 == p->buf[j]) {
- assert(j + 4 <= p->col);
- j += 3;
- } else
- vsz++;
- }
- assert(vsz > 0);
+void
+term_free(struct termp *p)
+{
- if (vis && vis + vsz >= maxvis) {
- putchar('\n');
- for (j = 0; j < (p->indent * 4); j++)
- putchar(' ');
- vis = 0;
- }
+ if (p->buf)
+ free(p->buf);
+ if (p->symtab)
+ mchars_free(p->symtab);
- for ( ; i < p->col; i++) {
- if (isspace(p->buf[i]))
- break;
- putchar(p->buf[i]);
- }
- vis += vsz;
- if (i < p->col) {
- putchar(' ');
- vis++;
- }
- }
-
- putchar('\n');
- p->col = 0;
+ free(p);
}
-static void
-newln(struct termp *p)
+void
+term_begin(struct termp *p, term_margin head,
+ term_margin foot, const void *arg)
{
- p->flags |= TERMP_NOSPACE;
- if (0 == p->col)
- return;
- flush(p);
+ p->headf = head;
+ p->footf = foot;
+ p->argf = arg;
+ (*p->begin)(p);
}
-static void
-vspace(struct termp *p)
+void
+term_end(struct termp *p)
{
- newln(p);
- putchar('\n');
+ (*p->end)(p);
}
-
-static void
-chara(struct termp *p, char c)
+/*
+ * Flush a line of text. A "line" is loosely defined as being something
+ * that should be followed by a newline, regardless of whether it's
+ * broken apart by newlines getting there. A line can also be a
+ * fragment of a columnar list (`Bl -tag' or `Bl -column'), which does
+ * not have a trailing newline.
+ *
+ * The following flags may be specified:
+ *
+ * - TERMP_NOLPAD: when beginning to write the line, don't left-pad the
+ * offset value. This is useful when doing columnar lists where the
+ * prior column has right-padded.
+ *
+ * - TERMP_NOBREAK: this is the most important and is used when making
+ * columns. In short: don't print a newline and instead pad to the
+ * right margin. Used in conjunction with TERMP_NOLPAD.
+ *
+ * - TERMP_TWOSPACE: when padding, make sure there are at least two
+ * space characters of padding. Otherwise, rather break the line.
+ *
+ * - TERMP_DANGLE: don't newline when TERMP_NOBREAK is specified and
+ * the line is overrun, and don't pad-right if it's underrun.
+ *
+ * - TERMP_HANG: like TERMP_DANGLE, but doesn't newline when
+ * overruning, instead save the position and continue at that point
+ * when the next invocation.
+ *
+ * In-line line breaking:
+ *
+ * If TERMP_NOBREAK is specified and the line overruns the right
+ * margin, it will break and pad-right to the right margin after
+ * writing. If maxrmargin is violated, it will break and continue
+ * writing from the right-margin, which will lead to the above scenario
+ * upon exit. Otherwise, the line will break at the right margin.
+ */
+void
+term_flushln(struct termp *p)
{
+ int i; /* current input position in p->buf */
+ size_t vis; /* current visual position on output */
+ size_t vbl; /* number of blanks to prepend to output */
+ size_t vend; /* end of word visual position on output */
+ size_t bp; /* visual right border position */
+ size_t dv; /* temporary for visual pos calculations */
+ int j; /* temporary loop index for p->buf */
+ int jhy; /* last hyph before overflow w/r/t j */
+ size_t maxvis; /* output position of visible boundary */
+ size_t mmax; /* used in calculating bp */
+
+ /*
+ * First, establish the maximum columns of "visible" content.
+ * This is usually the difference between the right-margin and
+ * an indentation, but can be, for tagged lists or columns, a
+ * small set of values.
+ */
+ assert (p->rmargin >= p->offset);
+ dv = p->rmargin - p->offset;
+ maxvis = (int)dv > p->overstep ? dv - (size_t)p->overstep : 0;
+ dv = p->maxrmargin - p->offset;
+ mmax = (int)dv > p->overstep ? dv - (size_t)p->overstep : 0;
+
+ bp = TERMP_NOBREAK & p->flags ? mmax : maxvis;
+
+ /*
+ * Indent the first line of a paragraph.
+ */
+ vbl = p->flags & TERMP_NOLPAD ? (size_t)0 : p->offset;
+
+ vis = vend = 0;
+ i = 0;
+
+ while (i < p->col) {
+ /*
+ * Handle literal tab characters: collapse all
+ * subsequent tabs into a single huge set of spaces.
+ */
+ while (i < p->col && '\t' == p->buf[i]) {
+ vend = (vis / p->tabwidth + 1) * p->tabwidth;
+ vbl += vend - vis;
+ vis = vend;
+ i++;
+ }
- if (p->col + 1 >= p->maxcols)
- errx(1, "line overrun");
-
- p->buf[(p->col)++] = c;
-}
-
-
-static void
-escape(struct termp *p, enum termesc esc)
-{
+ /*
+ * Count up visible word characters. Control sequences
+ * (starting with the CSI) aren't counted. A space
+ * generates a non-printing word, which is valid (the
+ * space is printed according to regular spacing rules).
+ */
- if (p->col + 4 >= p->maxcols)
- errx(1, "line overrun");
+ for (j = i, jhy = 0; j < p->col; j++) {
+ if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j])
+ break;
- p->buf[(p->col)++] = 27;
- p->buf[(p->col)++] = '[';
- switch (esc) {
- case (ESC_CLEAR):
- p->buf[(p->col)++] = '0';
- break;
- case (ESC_BOLD):
- p->buf[(p->col)++] = '1';
- break;
- case (ESC_UNDERLINE):
- p->buf[(p->col)++] = '4';
- break;
- default:
- abort();
- /* NOTREACHED */
- }
- p->buf[(p->col)++] = 'm';
-}
+ /* Back over the the last printed character. */
+ if (8 == p->buf[j]) {
+ assert(j);
+ vend -= (*p->width)(p, p->buf[j - 1]);
+ continue;
+ }
+ /* Regular word. */
+ /* Break at the hyphen point if we overrun. */
+ if (vend > vis && vend < bp &&
+ ASCII_HYPH == p->buf[j])
+ jhy = j;
-static void
-pword(struct termp *p, const char *word, size_t len)
-{
- size_t i;
+ vend += (*p->width)(p, p->buf[j]);
+ }
- assert(len > 0);
+ /*
+ * Find out whether we would exceed the right margin.
+ * If so, break to the next line.
+ */
+ if (vend > bp && 0 == jhy && vis > 0) {
+ vend -= vis;
+ (*p->endline)(p);
+ if (TERMP_NOBREAK & p->flags) {
+ p->viscol = p->rmargin;
+ (*p->advance)(p, p->rmargin);
+ vend += p->rmargin - p->offset;
+ } else {
+ p->viscol = 0;
+ vbl = p->offset;
+ }
- if ( ! (p->flags & TERMP_NOSPACE))
- chara(p, ' ');
+ /* Remove the p->overstep width. */
- p->flags &= ~TERMP_NOSPACE;
+ bp += (size_t)p->overstep;
+ p->overstep = 0;
+ }
- if (p->flags & TERMP_BOLD)
- escape(p, ESC_BOLD);
- if (p->flags & TERMP_UNDERLINE)
- escape(p, ESC_UNDERLINE);
+ /* Write out the [remaining] word. */
+ for ( ; i < p->col; i++) {
+ if (vend > bp && jhy > 0 && i > jhy)
+ break;
+ if ('\t' == p->buf[i])
+ break;
+ if (' ' == p->buf[i]) {
+ j = i;
+ while (' ' == p->buf[i])
+ i++;
+ dv = (size_t)(i - j) * (*p->width)(p, ' ');
+ vbl += dv;
+ vend += dv;
+ break;
+ }
+ if (ASCII_NBRSP == p->buf[i]) {
+ vbl += (*p->width)(p, ' ');
+ continue;
+ }
- for (i = 0; i < len; i++)
- chara(p, word[i]);
+ /*
+ * Now we definitely know there will be
+ * printable characters to output,
+ * so write preceding white space now.
+ */
+ if (vbl) {
+ (*p->advance)(p, vbl);
+ p->viscol += vbl;
+ vbl = 0;
+ }
- if (p->flags & TERMP_BOLD ||
- p->flags & TERMP_UNDERLINE)
- escape(p, ESC_CLEAR);
-}
+ if (ASCII_HYPH == p->buf[i]) {
+ (*p->letter)(p, '-');
+ p->viscol += (*p->width)(p, '-');
+ } else {
+ (*p->letter)(p, p->buf[i]);
+ p->viscol += (*p->width)(p, p->buf[i]);
+ }
+ }
+ vis = vend;
+ }
+ /*
+ * If there was trailing white space, it was not printed;
+ * so reset the cursor position accordingly.
+ */
+ vis -= vbl;
-static void
-word(struct termp *p, const char *word)
-{
- size_t i, j, len;
+ p->col = 0;
+ p->overstep = 0;
- /* TODO: delimiters? */
+ if ( ! (TERMP_NOBREAK & p->flags)) {
+ p->viscol = 0;
+ (*p->endline)(p);
+ return;
+ }
- len = strlen(word);
- assert(len > 0);
+ if (TERMP_HANG & p->flags) {
+ /* We need one blank after the tag. */
+ p->overstep = (int)(vis - maxvis + (*p->width)(p, ' '));
+
+ /*
+ * Behave exactly the same way as groff:
+ * If we have overstepped the margin, temporarily move
+ * it to the right and flag the rest of the line to be
+ * shorter.
+ * If we landed right at the margin, be happy.
+ * If we are one step before the margin, temporarily
+ * move it one step LEFT and flag the rest of the line
+ * to be longer.
+ */
+ if (p->overstep >= -1) {
+ assert((int)maxvis + p->overstep >= 0);
+ maxvis += (size_t)p->overstep;
+ } else
+ p->overstep = 0;
+
+ } else if (TERMP_DANGLE & p->flags)
+ return;
- for (j = i = 0; i < len; i++) {
- if ( ! isspace(word[i])) {
- j++;
- continue;
- }
- if (0 == j)
- continue;
- assert(i >= j);
- pword(p, &word[i - j], j);
- j = 0;
- }
- if (j > 0) {
- assert(i >= j);
- pword(p, &word[i - j], j);
+ /* Right-pad. */
+ if (maxvis > vis +
+ ((TERMP_TWOSPACE & p->flags) ? (*p->width)(p, ' ') : 0)) {
+ p->viscol += maxvis - vis;
+ (*p->advance)(p, maxvis - vis);
+ vis += (maxvis - vis);
+ } else { /* ...or newline break. */
+ (*p->endline)(p);
+ p->viscol = p->rmargin;
+ (*p->advance)(p, p->rmargin);
}
}
-static int
-termp_it_pre(struct termp *p, const struct mdoc_meta *meta,
- const struct mdoc_node *node)
+/*
+ * A newline only breaks an existing line; it won't assert vertical
+ * space. All data in the output buffer is flushed prior to the newline
+ * assertion.
+ */
+void
+term_newln(struct termp *p)
{
- switch (node->type) {
- case (MDOC_HEAD):
- /* TODO: only print one, if compat. */
- vspace(p);
- break;
- default:
- break;
+ p->flags |= TERMP_NOSPACE;
+ if (0 == p->col && 0 == p->viscol) {
+ p->flags &= ~TERMP_NOLPAD;
+ return;
}
- return(1);
+ term_flushln(p);
+ p->flags &= ~TERMP_NOLPAD;
}
-static int
-termp_bold_post(struct termp *p, const struct mdoc_meta *meta,
- const struct mdoc_node *node)
+/*
+ * Asserts a vertical space (a full, empty line-break between lines).
+ * Note that if used twice, this will cause two blank spaces and so on.
+ * All data in the output buffer is flushed prior to the newline
+ * assertion.
+ */
+void
+term_vspace(struct termp *p)
{
- p->flags &= ~TERMP_BOLD;
- return(1);
+ term_newln(p);
+ p->viscol = 0;
+ (*p->endline)(p);
}
-
-static int
-termp_under_pre(struct termp *p, const struct mdoc_meta *meta,
- const struct mdoc_node *node)
+void
+term_fontlast(struct termp *p)
{
+ enum termfont f;
- p->flags |= TERMP_UNDERLINE;
- return(1);
+ f = p->fontl;
+ p->fontl = p->fontq[p->fonti];
+ p->fontq[p->fonti] = f;
}
-static int
-termp_bold_pre(struct termp *p, const struct mdoc_meta *meta,
- const struct mdoc_node *node)
+void
+term_fontrepl(struct termp *p, enum termfont f)
{
- p->flags |= TERMP_BOLD;
- return(1);
+ p->fontl = p->fontq[p->fonti];
+ p->fontq[p->fonti] = f;
}
-static int
-termp_ns_pre(struct termp *p, const struct mdoc_meta *meta,
- const struct mdoc_node *node)
+void
+term_fontpush(struct termp *p, enum termfont f)
{
- p->flags |= TERMP_NOSPACE;
- return(1);
+ assert(p->fonti + 1 < 10);
+ p->fontl = p->fontq[p->fonti];
+ p->fontq[++p->fonti] = f;
}
-static int
-termp_pp_pre(struct termp *p, const struct mdoc_meta *meta,
- const struct mdoc_node *node)
+const void *
+term_fontq(struct termp *p)
{
- vspace(p);
- return(1);
+ return(&p->fontq[p->fonti]);
}
-static int
-termp_under_post(struct termp *p, const struct mdoc_meta *meta,
- const struct mdoc_node *node)
+enum termfont
+term_fonttop(struct termp *p)
{
- p->flags &= ~TERMP_UNDERLINE;
- return(1);
+ return(p->fontq[p->fonti]);
}
-static int
-termp_nd_pre(struct termp *p, const struct mdoc_meta *meta,
- const struct mdoc_node *node)
+void
+term_fontpopq(struct termp *p, const void *key)
{
- word(p, "-");
- return(1);
+ while (p->fonti >= 0 && key != &p->fontq[p->fonti])
+ p->fonti--;
+ assert(p->fonti >= 0);
}
-static int
-termp_bl_post(struct termp *p, const struct mdoc_meta *meta,
- const struct mdoc_node *node)
+void
+term_fontpop(struct termp *p)
{
- switch (node->type) {
- case (MDOC_BLOCK):
- newln(p);
- break;
- default:
- break;
- }
- return(1);
+ assert(p->fonti);
+ p->fonti--;
}
-
-static int
-termp_op_post(struct termp *p, const struct mdoc_meta *meta,
- const struct mdoc_node *node)
+/*
+ * Handle pwords, partial words, which may be either a single word or a
+ * phrase that cannot be broken down (such as a literal string). This
+ * handles word styling.
+ */
+void
+term_word(struct termp *p, const char *word)
{
+ const char *seq, *cp;
+ char c;
+ int sz, uc;
+ size_t ssz;
+ enum mandoc_esc esc;
+
+ if ( ! (TERMP_NOSPACE & p->flags)) {
+ if ( ! (TERMP_KEEP & p->flags)) {
+ if (TERMP_PREKEEP & p->flags)
+ p->flags |= TERMP_KEEP;
+ bufferc(p, ' ');
+ if (TERMP_SENTENCE & p->flags)
+ bufferc(p, ' ');
+ } else
+ bufferc(p, ASCII_NBRSP);
+ }
- switch (node->type) {
- case (MDOC_BODY):
+ if ( ! (p->flags & TERMP_NONOSPACE))
+ p->flags &= ~TERMP_NOSPACE;
+ else
p->flags |= TERMP_NOSPACE;
- word(p, "\\(rB");
- break;
- default:
- break;
- }
- return(1);
-}
+ p->flags &= ~(TERMP_SENTENCE | TERMP_IGNDELIM);
-static int
-termp_sh_post(struct termp *p, const struct mdoc_meta *meta,
- const struct mdoc_node *node)
-{
+ while ('\0' != *word) {
+ if ((ssz = strcspn(word, "\\")) > 0)
+ encode(p, word, ssz);
- switch (node->type) {
- case (MDOC_HEAD):
- p->flags &= ~TERMP_BOLD;
- newln(p);
- break;
- case (MDOC_BODY):
- newln(p);
- (p->indent)--;
- break;
- default:
- break;
- }
- return(1);
-}
+ word += (int)ssz;
+ if ('\\' != *word)
+ continue;
+ word++;
+ esc = mandoc_escape(&word, &seq, &sz);
+ if (ESCAPE_ERROR == esc)
+ break;
-static int
-termp_sh_pre(struct termp *p, const struct mdoc_meta *meta,
- const struct mdoc_node *node)
-{
+ if (TERMENC_ASCII != p->enc)
+ switch (esc) {
+ case (ESCAPE_UNICODE):
+ uc = mchars_num2uc(seq + 1, sz - 1);
+ if ('\0' == uc)
+ break;
+ encode1(p, uc);
+ continue;
+ case (ESCAPE_SPECIAL):
+ uc = mchars_spec2cp(p->symtab, seq, sz);
+ if (uc <= 0)
+ break;
+ encode1(p, uc);
+ continue;
+ default:
+ break;
+ }
- switch (node->type) {
- case (MDOC_HEAD):
- vspace(p);
- p->flags |= TERMP_BOLD;
- break;
- case (MDOC_BODY):
- (p->indent)++;
- break;
- default:
- break;
+ switch (esc) {
+ case (ESCAPE_UNICODE):
+ encode1(p, '?');
+ break;
+ case (ESCAPE_NUMBERED):
+ c = mchars_num2char(seq, sz);
+ if ('\0' != c)
+ encode(p, &c, 1);
+ break;
+ case (ESCAPE_SPECIAL):
+ cp = mchars_spec2str(p->symtab, seq, sz, &ssz);
+ if (NULL != cp)
+ encode(p, cp, ssz);
+ else if (1 == ssz)
+ encode(p, seq, sz);
+ break;
+ case (ESCAPE_FONTBOLD):
+ term_fontrepl(p, TERMFONT_BOLD);
+ break;
+ case (ESCAPE_FONTITALIC):
+ term_fontrepl(p, TERMFONT_UNDER);
+ break;
+ case (ESCAPE_FONT):
+ /* FALLTHROUGH */
+ case (ESCAPE_FONTROMAN):
+ term_fontrepl(p, TERMFONT_NONE);
+ break;
+ case (ESCAPE_FONTPREV):
+ term_fontlast(p);
+ break;
+ case (ESCAPE_NOSPACE):
+ if ('\0' == *word)
+ p->flags |= TERMP_NOSPACE;
+ break;
+ default:
+ break;
+ }
}
- return(1);
}
-
-static int
-termp_op_pre(struct termp *p, const struct mdoc_meta *meta,
- const struct mdoc_node *node)
+static void
+adjbuf(struct termp *p, int sz)
{
- switch (node->type) {
- case (MDOC_BODY):
- word(p, "\\(lB");
- p->flags |= TERMP_NOSPACE;
- break;
- default:
- break;
- }
- return(1);
-}
+ if (0 == p->maxcols)
+ p->maxcols = 1024;
+ while (sz >= p->maxcols)
+ p->maxcols <<= 2;
+ p->buf = mandoc_realloc
+ (p->buf, sizeof(int) * (size_t)p->maxcols);
+}
-static int
-termp_fl_pre(struct termp *p, const struct mdoc_meta *meta,
- const struct mdoc_node *node)
+static void
+bufferc(struct termp *p, char c)
{
- p->flags |= TERMP_BOLD;
- word(p, "-");
- p->flags |= TERMP_NOSPACE;
- return(1);
-}
+ if (p->col + 1 >= p->maxcols)
+ adjbuf(p, p->col + 1);
+ p->buf[p->col++] = c;
+}
+/*
+ * See encode().
+ * Do this for a single (probably unicode) value.
+ * Does not check for non-decorated glyphs.
+ */
static void
-termprint_r(struct termp *p, const struct mdoc_meta *meta,
- const struct mdoc_node *node)
+encode1(struct termp *p, int c)
{
+ enum termfont f;
- /* Pre-processing ----------------- */
-
- if (MDOC_TEXT != node->type) {
- if (termacts[node->tok].pre)
- if ( ! (*termacts[node->tok].pre)(p, meta, node))
- return;
- } else /* MDOC_TEXT == node->type */
- word(p, node->data.text.string);
+ if (p->col + 4 >= p->maxcols)
+ adjbuf(p, p->col + 4);
- /* Children ---------------------- */
+ f = term_fonttop(p);
- if (NULL == node->child) {
- /* No-child processing. */
- switch (node->type) {
- case (MDOC_ELEM):
- switch (node->tok) {
- case (MDOC_Nm):
- word(p, "progname"); /* TODO */
- break;
- case (MDOC_Ar):
- word(p, "...");
- break;
- default:
- break;
- }
- break;
- default:
- break;
- }
+ if (TERMFONT_NONE == f) {
+ p->buf[p->col++] = c;
+ return;
+ } else if (TERMFONT_UNDER == f) {
+ p->buf[p->col++] = '_';
} else
- termprint_r(p, meta, node->child);
-
- /* Post-processing --------------- */
-
- if (MDOC_TEXT != node->type) {
- if (termacts[node->tok].post)
- if ( ! (*termacts[node->tok].post)(p, meta, node))
- return;
- }
+ p->buf[p->col++] = c;
- /* Siblings ---------------------- */
-
- if (node->next)
- termprint_r(p, meta, node->next);
+ p->buf[p->col++] = 8;
+ p->buf[p->col++] = c;
}
-
static void
-termprint_footer(struct termp *p, const struct mdoc_meta *meta)
+encode(struct termp *p, const char *word, size_t sz)
{
- struct tm *tm;
- char *buf, *os;
- size_t sz, osz, ssz, i;
-
- if (NULL == (buf = malloc(p->maxvisible)))
- err(1, "malloc");
- if (NULL == (os = malloc(p->maxvisible)))
- err(1, "malloc");
+ enum termfont f;
+ int i, len;
+
+ /* LINTED */
+ len = sz;
+
+ /*
+ * Encode and buffer a string of characters. If the current
+ * font mode is unset, buffer directly, else encode then buffer
+ * character by character.
+ */
+
+ if (TERMFONT_NONE == (f = term_fonttop(p))) {
+ if (p->col + len >= p->maxcols)
+ adjbuf(p, p->col + len);
+ for (i = 0; i < len; i++)
+ p->buf[p->col++] = word[i];
+ return;
+ }
- tm = localtime(&meta->date);
- if (NULL == strftime(buf, p->maxvisible, "%B %d, %Y", tm))
- err(1, "strftime");
+ /* Pre-buffer, assuming worst-case. */
- osz = strlcpy(os, meta->os, p->maxvisible);
+ if (p->col + 1 + (len * 3) >= p->maxcols)
+ adjbuf(p, p->col + 1 + (len * 3));
- sz = strlen(buf);
- ssz = sz + osz + 1;
+ for (i = 0; i < len; i++) {
+ if ( ! isgraph((unsigned char)word[i])) {
+ p->buf[p->col++] = word[i];
+ continue;
+ }
- if (ssz > p->maxvisible) {
- ssz -= p->maxvisible;
- assert(ssz <= osz);
- os[osz - ssz] = 0;
- ssz = 1;
- } else
- ssz = p->maxvisible - ssz + 1;
+ if (TERMFONT_UNDER == f)
+ p->buf[p->col++] = '_';
+ else
+ p->buf[p->col++] = word[i];
- printf("\n");
- printf("%s", os);
- for (i = 0; i < ssz; i++)
- printf(" ");
+ p->buf[p->col++] = 8;
+ p->buf[p->col++] = word[i];
+ }
+}
- printf("%s\n", buf);
- fflush(stdout);
+size_t
+term_len(const struct termp *p, size_t sz)
+{
- free(buf);
- free(os);
+ return((*p->width)(p, ' ') * sz);
}
-static void
-termprint_header(struct termp *p, const struct mdoc_meta *meta)
+size_t
+term_strlen(const struct termp *p, const char *cp)
{
- char *msec, *buf, *title, *pp;
- size_t ssz, tsz, ttsz, i;;
+ size_t sz, rsz, i;
+ int ssz, c;
+ const char *seq, *rhs;
+ enum mandoc_esc esc;
+ static const char rej[] = { '\\', ASCII_HYPH, ASCII_NBRSP, '\0' };
+
+ /*
+ * Account for escaped sequences within string length
+ * calculations. This follows the logic in term_word() as we
+ * must calculate the width of produced strings.
+ */
+
+ sz = 0;
+ while ('\0' != *cp) {
+ rsz = strcspn(cp, rej);
+ for (i = 0; i < rsz; i++)
+ sz += (*p->width)(p, *cp++);
+
+ c = 0;
+ switch (*cp) {
+ case ('\\'):
+ cp++;
+ esc = mandoc_escape(&cp, &seq, &ssz);
+ if (ESCAPE_ERROR == esc)
+ return(sz);
+
+ if (TERMENC_ASCII != p->enc)
+ switch (esc) {
+ case (ESCAPE_UNICODE):
+ c = mchars_num2uc
+ (seq + 1, ssz - 1);
+ if ('\0' == c)
+ break;
+ sz += (*p->width)(p, c);
+ continue;
+ case (ESCAPE_SPECIAL):
+ c = mchars_spec2cp
+ (p->symtab, seq, ssz);
+ if (c <= 0)
+ break;
+ sz += (*p->width)(p, c);
+ continue;
+ default:
+ break;
+ }
+
+ rhs = NULL;
+
+ switch (esc) {
+ case (ESCAPE_UNICODE):
+ sz += (*p->width)(p, '?');
+ break;
+ case (ESCAPE_NUMBERED):
+ c = mchars_num2char(seq, ssz);
+ if ('\0' != c)
+ sz += (*p->width)(p, c);
+ break;
+ case (ESCAPE_SPECIAL):
+ rhs = mchars_spec2str
+ (p->symtab, seq, ssz, &rsz);
- if (NULL == (buf = malloc(p->maxvisible)))
- err(1, "malloc");
- if (NULL == (title = malloc(p->maxvisible)))
- err(1, "malloc");
+ if (ssz != 1 || rhs)
+ break;
- if (NULL == (pp = mdoc_vol2a(meta->vol)))
- switch (meta->msec) {
- case (MSEC_1):
- /* FALLTHROUGH */
- case (MSEC_6):
- /* FALLTHROUGH */
- case (MSEC_7):
- pp = mdoc_vol2a(VOL_URM);
- break;
- case (MSEC_8):
- pp = mdoc_vol2a(VOL_SMM);
+ rhs = seq;
+ rsz = ssz;
+ break;
+ default:
+ break;
+ }
+
+ if (NULL == rhs)
+ break;
+
+ for (i = 0; i < rsz; i++)
+ sz += (*p->width)(p, *rhs++);
break;
- case (MSEC_2):
- /* FALLTHROUGH */
- case (MSEC_3):
- /* FALLTHROUGH */
- case (MSEC_4):
- /* FALLTHROUGH */
- case (MSEC_5):
- pp = mdoc_vol2a(VOL_PRM);
+ case (ASCII_NBRSP):
+ sz += (*p->width)(p, ' ');
+ cp++;
break;
- case (MSEC_9):
- pp = mdoc_vol2a(VOL_KM);
+ case (ASCII_HYPH):
+ sz += (*p->width)(p, '-');
+ cp++;
break;
default:
- /* FIXME: capitalise. */
- if (NULL == (pp = mdoc_msec2a(meta->msec)))
- pp = mdoc_msec2a(MSEC_local);
break;
}
- assert(pp);
-
- tsz = strlcpy(buf, pp, p->maxvisible);
- assert(tsz < p->maxvisible);
-
- if ((pp = mdoc_arch2a(meta->arch))) {
- tsz = strlcat(buf, " (", p->maxvisible);
- assert(tsz < p->maxvisible);
- tsz = strlcat(buf, pp, p->maxvisible);
- assert(tsz < p->maxvisible);
- tsz = strlcat(buf, ")", p->maxvisible);
- assert(tsz < p->maxvisible);
}
- ttsz = strlcpy(title, meta->title, p->maxvisible);
-
- if (NULL == (msec = mdoc_msec2a(meta->msec)))
- msec = "";
-
- ssz = (2 * (ttsz + 2 + strlen(msec))) + tsz + 2;
-
- if (ssz > p->maxvisible) {
- if ((ssz -= p->maxvisible) % 2)
- ssz++;
- ssz /= 2;
-
- assert(ssz <= ttsz);
- title[ttsz - ssz] = 0;
- ssz = 1;
- } else
- ssz = ((p->maxvisible - ssz) / 2) + 1;
-
- printf("%s(%s)", title, msec);
-
- for (i = 0; i < ssz; i++)
- printf(" ");
-
- printf("%s", buf);
-
- for (i = 0; i < ssz; i++)
- printf(" ");
-
- printf("%s(%s)\n", title, msec);
- fflush(stdout);
-
- free(title);
- free(buf);
+ return(sz);
}
-
-int
-termprint(const struct mdoc_node *node,
- const struct mdoc_meta *meta)
+/* ARGSUSED */
+size_t
+term_vspan(const struct termp *p, const struct roffsu *su)
{
- struct termp p;
-
- if (ERR == setupterm(NULL, STDOUT_FILENO, NULL))
- return(0);
-
- p.maxvisible = columns < 60 ? 60 : (size_t)columns;
- p.maxcols = 1024;
- p.indent = p.col = 0;
- p.flags = TERMP_NOSPACE;
+ double r;
- if (NULL == (p.buf = malloc(p.maxcols)))
- err(1, "malloc");
-
- termprint_header(&p, meta);
- termprint_r(&p, meta, node);
- termprint_footer(&p, meta);
-
- free(p.buf);
+ switch (su->unit) {
+ case (SCALE_CM):
+ r = su->scale * 2;
+ break;
+ case (SCALE_IN):
+ r = su->scale * 6;
+ break;
+ case (SCALE_PC):
+ r = su->scale;
+ break;
+ case (SCALE_PT):
+ r = su->scale / 8;
+ break;
+ case (SCALE_MM):
+ r = su->scale / 1000;
+ break;
+ case (SCALE_VS):
+ r = su->scale;
+ break;
+ default:
+ r = su->scale - 1;
+ break;
+ }
- return(1);
+ if (r < 0.0)
+ r = 0.0;
+ return(/* LINTED */(size_t)
+ r);
}
+size_t
+term_hspan(const struct termp *p, const struct roffsu *su)
+{
+ double v;
+ v = ((*p->hspan)(p, su));
+ if (v < 0.0)
+ v = 0.0;
+ return((size_t) /* LINTED */
+ v);
+}
git.ckatri.com / mandoc.git / blobdiff