-/* $Id: term.c,v 1.5 2009/02/21 19:05:28 kristaps Exp $ */
+/* $Id: term.c,v 1.203 2012/05/31 22:29:13 schwarze Exp $ */
/*
- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2010, 2011, 2012 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 <err.h>
-#include <stdlib.h>
+#include <stdint.h>
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
+#include "mandoc.h"
+#include "out.h"
#include "term.h"
-#include "private.h" /* XXX */
+#include "main.h"
-enum termstyle {
- STYLE_CLEAR,
- STYLE_BOLD,
- STYLE_UNDERLINE
-};
+static size_t cond_width(const struct termp *, int, int *);
+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);
-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 *);
+void
+term_free(struct termp *p)
+{
-static void pword(struct termp *, const char *, size_t);
-static void chara(struct termp *, char);
-static void escape(struct termp *, enum termstyle);
+ if (p->buf)
+ free(p->buf);
+ if (p->symtab)
+ mchars_free(p->symtab);
+ free(p);
+}
+
+
+void
+term_begin(struct termp *p, term_margin head,
+ term_margin foot, const void *arg)
+{
+
+ p->headf = head;
+ p->footf = foot;
+ p->argf = arg;
+ (*p->begin)(p);
+}
+
+void
+term_end(struct termp *p)
+{
+
+ (*p->end)(p);
+}
+
+/*
+ * 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_NOBREAK: this is the most important and is used when making
+ * columns. In short: don't print a newline and instead expect the
+ * next call to do the padding up to the start of the next column.
+ *
+ * - TERMP_TWOSPACE: make sure there is room for 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
+ * overrunning, 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
-flushln(struct termp *p)
+term_flushln(struct termp *p)
{
- size_t i, j, vsz, vis, maxvis;
+ 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.
+ * 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;
- assert(p->offset < p->rmargin);
- maxvis = p->rmargin - p->offset;
- vis = 0;
+ bp = TERMP_NOBREAK & p->flags ? mmax : maxvis;
/*
- * If in the standard case (left-justified), then begin with our
- * indentation, otherwise (columns, etc.) just start spitting
- * out text.
+ * Calculate the required amount of padding.
*/
+ vbl = p->offset + p->overstep > p->viscol ?
+ p->offset + p->overstep - p->viscol : 0;
+
+ vis = vend = 0;
+ i = 0;
- if ( ! (p->flags & TERMP_NOLPAD))
- /* LINTED */
- for (j = 0; j < p->offset; j++)
- putchar(' ');
+ 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++;
+ }
- for (i = 0; i < p->col; i++) {
/*
* Count up visible word characters. Control sequences
- * (starting with the CSI) aren't counted.
+ * (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).
*/
- assert( ! isspace(p->buf[i]));
- /* LINTED */
- for (j = i, vsz = 0; j < p->col; j++) {
- if (isspace(p->buf[j]))
+ for (j = i, jhy = 0; j < p->col; j++) {
+ if ((j && ' ' == p->buf[j]) || '\t' == p->buf[j])
break;
- else if (27 == p->buf[j]) {
- assert(j + 4 <= p->col);
- j += 3;
- } else
- vsz++;
+
+ /* 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;
+
+ vend += (*p->width)(p, p->buf[j]);
}
- assert(vsz > 0);
/*
- * If a word is too long and we're within a line, put it
- * on the next line. Puke if we're being asked to write
- * something that will exceed the right margin (i.e.,
- * from a fresh line or when we're not allowed to break
- * the line with TERMP_NOBREAK).
+ * 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);
+ p->viscol = 0;
+ if (TERMP_NOBREAK & p->flags) {
+ vbl = p->rmargin;
+ vend += p->rmargin - p->offset;
+ } else
+ vbl = p->offset;
- if (vis && vis + vsz >= maxvis) {
- /* FIXME */
- if (p->flags & TERMP_NOBREAK)
- errx(1, "word breaks right margin");
- putchar('\n');
- for (j = 0; j < p->offset; j++)
- putchar(' ');
- vis = 0;
- } else if (vis + vsz >= maxvis) {
- /* FIXME */
- errx(1, "word breaks right margin");
- }
+ /* Remove the p->overstep width. */
- /*
- * Write out the word and a trailing space. Omit the
- * space if we're the last word in the line.
- */
+ bp += (size_t)p->overstep;
+ p->overstep = 0;
+ }
+ /* Write out the [remaining] word. */
for ( ; i < p->col; i++) {
- if (isspace(p->buf[i]))
+ if (vend > bp && jhy > 0 && i > jhy)
break;
- putchar(p->buf[i]);
- }
- vis += vsz;
- if (i < p->col) {
- putchar(' ');
- vis++;
+ 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;
+ }
+
+ /*
+ * 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 (ASCII_HYPH == p->buf[i]) {
+ (*p->letter)(p, '-');
+ p->viscol += (*p->width)(p, '-');
+ continue;
+ }
+
+ (*p->letter)(p, p->buf[i]);
+ if (8 == p->buf[i])
+ p->viscol -= (*p->width)(p, p->buf[i-1]);
+ else
+ p->viscol += (*p->width)(p, p->buf[i]);
}
+ vis = vend;
}
/*
- * If we're not to right-marginalise it (newline), then instead
- * pad to the right margin and stay off.
+ * If there was trailing white space, it was not printed;
+ * so reset the cursor position accordingly.
*/
-
- if (p->flags & TERMP_NOBREAK) {
- for ( ; vis <= maxvis; vis++)
- putchar(' ');
- } else
- putchar('\n');
+ if (vis)
+ vis -= vbl;
p->col = 0;
+ p->overstep = 0;
+
+ if ( ! (TERMP_NOBREAK & p->flags)) {
+ p->viscol = 0;
+ (*p->endline)(p);
+ return;
+ }
+
+ 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)
+ p->overstep = 0;
+ return;
+
+ } else if (TERMP_DANGLE & p->flags)
+ return;
+
+ /* If the column was overrun, break the line. */
+ if (maxvis <= vis +
+ ((TERMP_TWOSPACE & p->flags) ? (*p->width)(p, ' ') : 0)) {
+ (*p->endline)(p);
+ p->viscol = 0;
+ }
}
+/*
+ * 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
-newln(struct termp *p)
+term_newln(struct termp *p)
{
- /*
- * A newline only breaks an existing line; it won't assert
- * vertical space.
- */
p->flags |= TERMP_NOSPACE;
- if (0 == p->col)
- return;
- flushln(p);
+ if (p->col || p->viscol)
+ term_flushln(p);
}
+/*
+ * 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
-vspace(struct termp *p)
+term_vspace(struct termp *p)
{
- /*
- * Asserts a vertical space (a full, empty line-break between
- * lines).
- */
- newln(p);
- putchar('\n');
+ term_newln(p);
+ p->viscol = 0;
+ if (0 < p->skipvsp)
+ p->skipvsp--;
+ else
+ (*p->endline)(p);
}
-
-static void
-chara(struct termp *p, char c)
+void
+term_fontlast(struct termp *p)
{
+ enum termfont f;
- /* TODO: dynamically expand the buffer. */
- if (p->col + 1 >= p->maxcols)
- errx(1, "line overrun");
- p->buf[(p->col)++] = c;
+ f = p->fontl;
+ p->fontl = p->fontq[p->fonti];
+ p->fontq[p->fonti] = f;
}
-static void
-escape(struct termp *p, enum termstyle esc)
+void
+term_fontrepl(struct termp *p, enum termfont f)
{
- if (p->col + 4 >= p->maxcols)
- errx(1, "line overrun");
+ p->fontl = p->fontq[p->fonti];
+ p->fontq[p->fonti] = f;
+}
- p->buf[(p->col)++] = 27;
- p->buf[(p->col)++] = '[';
- switch (esc) {
- case (STYLE_CLEAR):
- p->buf[(p->col)++] = '0';
- break;
- case (STYLE_BOLD):
- p->buf[(p->col)++] = '1';
- break;
- case (STYLE_UNDERLINE):
- p->buf[(p->col)++] = '4';
- break;
- default:
- abort();
- /* NOTREACHED */
- }
- p->buf[(p->col)++] = 'm';
+
+void
+term_fontpush(struct termp *p, enum termfont f)
+{
+
+ assert(p->fonti + 1 < 10);
+ p->fontl = p->fontq[p->fonti];
+ p->fontq[++p->fonti] = f;
}
-static void
-pword(struct termp *p, const char *word, size_t len)
+const void *
+term_fontq(struct termp *p)
{
- size_t i;
- assert(len > 0);
+ return(&p->fontq[p->fonti]);
+}
- if ( ! (p->flags & TERMP_NOSPACE))
- chara(p, ' ');
- p->flags &= ~TERMP_NOSPACE;
+enum termfont
+term_fonttop(struct termp *p)
+{
- if (p->flags & TERMP_BOLD)
- escape(p, STYLE_BOLD);
- if (p->flags & TERMP_UNDERLINE)
- escape(p, STYLE_UNDERLINE);
+ return(p->fontq[p->fonti]);
+}
- /* TODO: escape patterns. */
- for (i = 0; i < len; i++)
- chara(p, word[i]);
+void
+term_fontpopq(struct termp *p, const void *key)
+{
- if (p->flags & TERMP_BOLD ||
- p->flags & TERMP_UNDERLINE)
- escape(p, STYLE_CLEAR);
+ while (p->fonti >= 0 && key != &p->fontq[p->fonti])
+ p->fonti--;
+ assert(p->fonti >= 0);
}
void
-word(struct termp *p, const char *word)
+term_fontpop(struct termp *p)
{
- size_t i, j, len;
- if (mdoc_isdelim(word))
- p->flags |= TERMP_NOSPACE;
+ assert(p->fonti);
+ p->fonti--;
+}
+
+/*
+ * 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);
+ }
- len = strlen(word);
- assert(len > 0);
+ if ( ! (p->flags & TERMP_NONOSPACE))
+ p->flags &= ~TERMP_NOSPACE;
+ else
+ p->flags |= TERMP_NOSPACE;
- /* LINTED */
- for (j = i = 0; i < len; i++) {
- if ( ! isspace(word[i])) {
- j++;
+ p->flags &= ~(TERMP_SENTENCE | TERMP_IGNDELIM);
+
+ while ('\0' != *word) {
+ if ('\\' != *word) {
+ if (TERMP_SKIPCHAR & p->flags) {
+ p->flags &= ~TERMP_SKIPCHAR;
+ word++;
+ continue;
+ }
+ ssz = strcspn(word, "\\");
+ encode(p, word, ssz);
+ word += (int)ssz;
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);
+
+ word++;
+ esc = mandoc_escape(&word, &seq, &sz);
+ if (ESCAPE_ERROR == esc)
+ break;
+
+ 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 (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 (TERMP_SKIPCHAR & p->flags)
+ p->flags &= ~TERMP_SKIPCHAR;
+ else if ('\0' == *word)
+ p->flags |= TERMP_NOSPACE;
+ break;
+ case (ESCAPE_SKIPCHAR):
+ p->flags |= TERMP_SKIPCHAR;
+ break;
+ default:
+ break;
+ }
}
}
-
static void
-termprint_r(struct termp *p, const struct mdoc_meta *meta,
- const struct mdoc_node *node)
+adjbuf(struct termp *p, int sz)
{
- int dochild;
- /* Pre-processing. */
+ 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 void
+bufferc(struct termp *p, char c)
+{
- dochild = 1;
+ if (p->col + 1 >= p->maxcols)
+ adjbuf(p, p->col + 1);
- if (MDOC_TEXT != node->type) {
- if (termacts[node->tok].pre)
- if ( ! (*termacts[node->tok].pre)(p, meta, node))
- dochild = 0;
- } else /* MDOC_TEXT == node->type */
- word(p, node->data.text.string);
+ p->buf[p->col++] = c;
+}
- /* Children. */
+/*
+ * See encode().
+ * Do this for a single (probably unicode) value.
+ * Does not check for non-decorated glyphs.
+ */
+static void
+encode1(struct termp *p, int c)
+{
+ enum termfont f;
- if (dochild && node->child)
- termprint_r(p, meta, node->child);
+ if (TERMP_SKIPCHAR & p->flags) {
+ p->flags &= ~TERMP_SKIPCHAR;
+ return;
+ }
- /* Post-processing. */
+ if (p->col + 4 >= p->maxcols)
+ adjbuf(p, p->col + 4);
- if (MDOC_TEXT != node->type) {
- if (termacts[node->tok].post)
- if ( ! (*termacts[node->tok].post)(p, meta, node))
- return;
- }
+ f = term_fonttop(p);
- /* Siblings. */
+ if (TERMFONT_NONE == f) {
+ p->buf[p->col++] = c;
+ return;
+ } else if (TERMFONT_UNDER == f) {
+ p->buf[p->col++] = '_';
+ } else
+ p->buf[p->col++] = c;
- 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;
+ enum termfont f;
+ int i, len;
- if (NULL == (buf = malloc(p->rmargin)))
- err(1, "malloc");
- if (NULL == (os = malloc(p->rmargin)))
- err(1, "malloc");
+ if (TERMP_SKIPCHAR & p->flags) {
+ p->flags &= ~TERMP_SKIPCHAR;
+ return;
+ }
- tm = localtime(&meta->date);
- if (NULL == strftime(buf, p->rmargin, "%B %d, %Y", tm))
- err(1, "strftime");
+ /* LINTED */
+ len = sz;
- osz = strlcpy(os, meta->os, p->rmargin);
+ /*
+ * 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;
+ }
- sz = strlen(buf);
- ssz = sz + osz + 1;
+ /* Pre-buffer, assuming worst-case. */
- if (ssz > p->rmargin) {
- ssz -= p->rmargin;
- assert(ssz <= osz);
- os[osz - ssz] = 0;
- ssz = 1;
- } else
- ssz = p->rmargin - ssz + 1;
+ if (p->col + 1 + (len * 3) >= p->maxcols)
+ adjbuf(p, p->col + 1 + (len * 3));
- printf("\n");
- printf("%s", os);
- for (i = 0; i < ssz; i++)
- printf(" ");
+ for (i = 0; i < len; i++) {
+ if (ASCII_HYPH != word[i] &&
+ ! isgraph((unsigned char)word[i])) {
+ p->buf[p->col++] = word[i];
+ continue;
+ }
- printf("%s\n", buf);
- fflush(stdout);
+ if (TERMFONT_UNDER == f)
+ p->buf[p->col++] = '_';
+ else if (ASCII_HYPH == word[i])
+ p->buf[p->col++] = '-';
+ else
+ p->buf[p->col++] = word[i];
- free(buf);
- free(os);
+ p->buf[p->col++] = 8;
+ p->buf[p->col++] = word[i];
+ }
}
-
-static void
-termprint_header(struct termp *p, const struct mdoc_meta *meta)
+size_t
+term_len(const struct termp *p, size_t sz)
{
- char *msec, *buf, *title, *pp;
- size_t ssz, tsz, ttsz, i;;
- if (NULL == (buf = malloc(p->rmargin)))
- err(1, "malloc");
- if (NULL == (title = malloc(p->rmargin)))
- err(1, "malloc");
+ return((*p->width)(p, ' ') * sz);
+}
- 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);
- break;
- case (MSEC_2):
- /* FALLTHROUGH */
- case (MSEC_3):
- /* FALLTHROUGH */
- case (MSEC_4):
- /* FALLTHROUGH */
- case (MSEC_5):
- pp = mdoc_vol2a(VOL_PRM);
- break;
- case (MSEC_9):
- pp = mdoc_vol2a(VOL_KM);
- break;
- default:
- /* FIXME: capitalise. */
- if (NULL == (pp = mdoc_msec2a(meta->msec)))
- pp = mdoc_msec2a(MSEC_local);
- break;
- }
- assert(pp);
-
- tsz = strlcpy(buf, pp, p->rmargin);
- assert(tsz < p->rmargin);
-
- if ((pp = mdoc_arch2a(meta->arch))) {
- tsz = strlcat(buf, " (", p->rmargin);
- assert(tsz < p->rmargin);
- tsz = strlcat(buf, pp, p->rmargin);
- assert(tsz < p->rmargin);
- tsz = strlcat(buf, ")", p->rmargin);
- assert(tsz < p->rmargin);
- }
+static size_t
+cond_width(const struct termp *p, int c, int *skip)
+{
- ttsz = strlcpy(title, meta->title, p->rmargin);
+ if (*skip) {
+ (*skip) = 0;
+ return(0);
+ } else
+ return((*p->width)(p, c));
+}
- if (NULL == (msec = mdoc_msec2a(meta->msec)))
- msec = "";
+size_t
+term_strlen(const struct termp *p, const char *cp)
+{
+ size_t sz, rsz, i;
+ int ssz, skip, c;
+ const char *seq, *rhs;
+ enum mandoc_esc esc;
+ static const char rej[] = { '\\', ASCII_HYPH, ASCII_NBRSP, '\0' };
- ssz = (2 * (ttsz + 2 + strlen(msec))) + tsz + 2;
+ /*
+ * Account for escaped sequences within string length
+ * calculations. This follows the logic in term_word() as we
+ * must calculate the width of produced strings.
+ */
- if (ssz > p->rmargin) {
- if ((ssz -= p->rmargin) % 2)
- ssz++;
- ssz /= 2;
-
- assert(ssz <= ttsz);
- title[ttsz - ssz] = 0;
- ssz = 1;
- } else
- ssz = ((p->rmargin - ssz) / 2) + 1;
+ sz = 0;
+ skip = 0;
+ while ('\0' != *cp) {
+ rsz = strcspn(cp, rej);
+ for (i = 0; i < rsz; i++)
+ sz += cond_width(p, *cp++, &skip);
+
+ 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 += cond_width(p, c, &skip);
+ continue;
+ case (ESCAPE_SPECIAL):
+ c = mchars_spec2cp
+ (p->symtab, seq, ssz);
+ if (c <= 0)
+ break;
+ sz += cond_width(p, c, &skip);
+ continue;
+ default:
+ break;
+ }
+
+ rhs = NULL;
+
+ switch (esc) {
+ case (ESCAPE_UNICODE):
+ sz += cond_width(p, '?', &skip);
+ break;
+ case (ESCAPE_NUMBERED):
+ c = mchars_num2char(seq, ssz);
+ if ('\0' != c)
+ sz += cond_width(p, c, &skip);
+ break;
+ case (ESCAPE_SPECIAL):
+ rhs = mchars_spec2str
+ (p->symtab, seq, ssz, &rsz);
- printf("%s(%s)", title, msec);
+ if (ssz != 1 || rhs)
+ break;
- for (i = 0; i < ssz; i++)
- printf(" ");
+ rhs = seq;
+ rsz = ssz;
+ break;
+ case (ESCAPE_SKIPCHAR):
+ skip = 1;
+ break;
+ default:
+ break;
+ }
- printf("%s", buf);
+ if (NULL == rhs)
+ break;
- for (i = 0; i < ssz; i++)
- printf(" ");
+ if (skip) {
+ skip = 0;
+ break;
+ }
- printf("%s(%s)\n", title, msec);
- fflush(stdout);
+ for (i = 0; i < rsz; i++)
+ sz += (*p->width)(p, *rhs++);
+ break;
+ case (ASCII_NBRSP):
+ sz += cond_width(p, ' ', &skip);
+ cp++;
+ break;
+ case (ASCII_HYPH):
+ sz += cond_width(p, '-', &skip);
+ cp++;
+ break;
+ default:
+ break;
+ }
+ }
- 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;
-
- p.maxrmargin = 80; /* XXX */
- p.rmargin = p.maxrmargin;
- p.maxcols = 1024;
- p.offset = p.col = 0;
- p.flags = TERMP_NOSPACE;
-
- if (NULL == (p.buf = malloc(p.maxcols)))
- err(1, "malloc");
+ double r;
- 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