=================================================================== RCS file: /cvs/mandoc/term.c,v retrieving revision 1.9 retrieving revision 1.207 diff -u -p -r1.9 -r1.207 --- mandoc/term.c 2009/02/22 19:23:48 1.9 +++ mandoc/term.c 2013/05/29 15:17:52 1.207 @@ -1,543 +1,782 @@ -/* $Id: term.c,v 1.9 2009/02/22 19:23:48 kristaps Exp $ */ +/* $Id: term.c,v 1.207 2013/05/29 15:17:52 schwarze Exp $ */ /* - * Copyright (c) 2008, 2009 Kristaps Dzonsons + * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons + * Copyright (c) 2010, 2011, 2012 Ingo Schwarze * * 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 + #include #include -#include -#include +#include #include +#include #include -#include -#ifdef __linux__ -#include -#endif - +#include "mandoc.h" +#include "out.h" #include "term.h" +#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 pescape(struct termp *, - const char *, size_t *, size_t); -static void chara(struct termp *, char); -static void style(struct termp *, enum termstyle); + if (p->buf) + free(p->buf); + if (p->symtab) + mchars_free(p->symtab); -#ifdef __linux__ -extern size_t strlcat(char *, const char *, size_t); -extern size_t strlcpy(char *, const char *, size_t); -#endif + free(p); +} + void -flushln(struct termp *p) +term_begin(struct termp *p, term_margin head, + term_margin foot, const void *arg) { - size_t i, j, vsz, vis, maxvis; + 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 +term_flushln(struct termp *p) +{ + int i; /* current input position in p->buf */ + int ntab; /* number of tabs to prepend */ + 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; - if ( ! (p->flags & TERMP_NOLPAD)) - /* LINTED */ - for (j = 0; j < p->offset; j++) - putchar(' '); + vis = vend = 0; + i = 0; - /* - * If we're literal, print out verbatim. - */ - if (p->flags & TERMP_LITERAL) { - /* FIXME: count non-printing chars. */ - for (i = 0; i < p->col; i++) - putchar(p->buf[i]); - putchar('\n'); - p->col = 0; - return; - } + while (i < p->col) { + /* + * Handle literal tab characters: collapse all + * subsequent tabs into a single huge set of spaces. + */ + ntab = 0; + while (i < p->col && '\t' == p->buf[i]) { + vend = (vis / p->tabwidth + 1) * p->tabwidth; + vbl += vend - vis; + vis = vend; + ntab++; + 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"); - } + /* use pending tabs on the new line */ - /* - * Write out the word and a trailing space. Omit the - * space if we're the last word in the line. - */ + if (0 < ntab) + vbl += ntab * p->tabwidth; + /* Remove the p->overstep width. */ + + 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]); + 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 += vsz; - if (i < p->col) { - putchar(' '); - vis++; - } + 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 (vis) + vis -= vbl; - if (p->flags & TERMP_NOBREAK) { - for ( ; vis <= maxvis; vis++) - putchar(' '); - } else - putchar('\n'); - 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, ' ')); + + /* + * If we have overstepped the margin, temporarily move + * it to the right and flag the rest of the line to be + * shorter. + */ + if (p->overstep < 0) + 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 -style(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->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'; + p->fontl = p->fontq[p->fonti]; + p->fontq[p->fonti] = f; } -static void -pescape(struct termp *p, const char *word, size_t *i, size_t len) +void +term_fontpush(struct termp *p, enum termfont f) { - (*i)++; - assert(*i < len); + assert(p->fonti + 1 < 10); + p->fontl = p->fontq[p->fonti]; + p->fontq[++p->fonti] = f; +} - if ('(' == word[*i]) { - /* Two-character escapes. */ - (*i)++; - assert(*i + 1 < len); - if ('r' == word[*i] && 'B' == word[*i + 1]) - chara(p, ']'); - else if ('l' == word[*i] && 'B' == word[*i + 1]) - chara(p, '['); +const void * +term_fontq(struct termp *p) +{ - (*i)++; - return; - - } else if ('[' != word[*i]) { - /* One-character escapes. */ - switch (word[*i]) { - case ('\\'): - /* FALLTHROUGH */ - case ('\''): - /* FALLTHROUGH */ - case ('`'): - /* FALLTHROUGH */ - case ('-'): - /* FALLTHROUGH */ - case ('.'): - chara(p, word[*i]); - default: - break; - } - return; - } - /* n-character escapes. */ + return(&p->fontq[p->fonti]); } -static void -pword(struct termp *p, const char *word, size_t len) +enum termfont +term_fonttop(struct termp *p) { - size_t i; - /*assert(len > 0);*/ /* Can be, if literal. */ + return(p->fontq[p->fonti]); +} - if ( ! (p->flags & TERMP_NOSPACE) && - ! (p->flags & TERMP_LITERAL)) - chara(p, ' '); - p->flags &= ~TERMP_NOSPACE; +void +term_fontpopq(struct termp *p, const void *key) +{ - if (p->flags & TERMP_BOLD) - style(p, STYLE_BOLD); - if (p->flags & TERMP_UNDERLINE) - style(p, STYLE_UNDERLINE); + while (p->fonti >= 0 && key < (void *)(p->fontq + p->fonti)) + p->fonti--; + assert(p->fonti >= 0); +} - for (i = 0; i < len; i++) { - if ('\\' == word[i]) { - pescape(p, word, &i, len); - continue; - } - chara(p, word[i]); - } - if (p->flags & TERMP_BOLD || - p->flags & TERMP_UNDERLINE) - style(p, STYLE_CLEAR); +void +term_fontpop(struct termp *p) +{ + + 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 -word(struct termp *p, const char *word) +term_word(struct termp *p, const char *word) { - size_t i, j, len; + const char *seq, *cp; + char c; + int sz, uc; + size_t ssz; + enum mandoc_esc esc; - if (p->flags & TERMP_LITERAL) { - pword(p, word, strlen(word)); - return; + if ( ! (TERMP_NOSPACE & p->flags)) { + if ( ! (TERMP_KEEP & p->flags)) { + bufferc(p, ' '); + if (TERMP_SENTENCE & p->flags) + bufferc(p, ' '); + } else + bufferc(p, ASCII_NBRSP); } + if (TERMP_PREKEEP & p->flags) + p->flags |= TERMP_KEEP; - len = strlen(word); - assert(len > 0); + if ( ! (p->flags & TERMP_NONOSPACE)) + p->flags &= ~TERMP_NOSPACE; + else + p->flags |= TERMP_NOSPACE; - if (mdoc_isdelim(word)) { - if ( ! (p->flags & TERMP_IGNDELIM)) - p->flags |= TERMP_NOSPACE; - p->flags &= ~TERMP_IGNDELIM; - } + p->flags &= ~(TERMP_SENTENCE | TERMP_IGNDELIM); - /* LINTED */ - for (j = i = 0; i < len; i++) { - if ( ! isspace(word[i])) { - j++; + 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; + + 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; + } } - if (j > 0) { - assert(i >= j); - pword(p, &word[i - j], j); - } } - 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; - dochild = 1; + p->buf = mandoc_realloc + (p->buf, sizeof(int) * (size_t)p->maxcols); +} - 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); +static void +bufferc(struct termp *p, char c) +{ - /* Children. */ + if (p->col + 1 >= p->maxcols) + adjbuf(p, p->col + 1); - if (dochild && node->child) - termprint_r(p, meta, node->child); + p->buf[p->col++] = c; +} - /* Post-processing. */ +/* + * 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 (MDOC_TEXT != node->type) - if (termacts[node->tok].post) - (*termacts[node->tok].post)(p, meta, node); + if (TERMP_SKIPCHAR & p->flags) { + p->flags &= ~TERMP_SKIPCHAR; + return; + } - /* Siblings. */ + if (p->col + 4 >= p->maxcols) + adjbuf(p, p->col + 4); - if (node->next) - termprint_r(p, meta, node->next); -} + f = term_fonttop(p); + 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; + 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); + /* LINTED */ + len = sz; -#ifdef __linux__ - if (0 == strftime(buf, p->rmargin, "%B %d, %Y", tm)) -#else - if (NULL == strftime(buf, p->rmargin, "%B %d, %Y", tm)) -#endif - err(1, "strftime"); + /* + * Encode and buffer a string of characters. If the current + * font mode is unset, buffer directly, else encode then buffer + * character by character. + */ - osz = strlcpy(os, meta->os, p->rmargin); + 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]; + } } +size_t +term_len(const struct termp *p, size_t sz) +{ -static void -termprint_header(struct termp *p, const struct mdoc_meta *meta) + return((*p->width)(p, ' ') * sz); +} + +static size_t +cond_width(const struct termp *p, int c, int *skip) { - char *buf, *title; - const char *pp, *msec; - size_t ssz, tsz, ttsz, i;; - if (NULL == (buf = malloc(p->rmargin))) - err(1, "malloc"); - if (NULL == (title = malloc(p->rmargin))) - err(1, "malloc"); + if (*skip) { + (*skip) = 0; + return(0); + } else + return((*p->width)(p, c)); +} - 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); +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' }; - tsz = strlcpy(buf, pp, p->rmargin); - assert(tsz < p->rmargin); + /* + * 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 ((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); - } + sz = 0; + skip = 0; + while ('\0' != *cp) { + rsz = strcspn(cp, rej); + for (i = 0; i < rsz; i++) + sz += cond_width(p, *cp++, &skip); - ttsz = strlcpy(title, meta->title, p->rmargin); + c = 0; + switch (*cp) { + case ('\\'): + cp++; + esc = mandoc_escape(&cp, &seq, &ssz); + if (ESCAPE_ERROR == esc) + return(sz); - if (NULL == (msec = mdoc_msec2a(meta->msec))) - msec = ""; + 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; + } - ssz = (2 * (ttsz + 2 + strlen(msec))) + tsz + 2; + rhs = NULL; - 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; + 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); } - -void -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; + double r; - p.maxrmargin = 80; /* XXX */ - p.rmargin = p.maxrmargin; - p.maxcols = 1024; - p.offset = p.col = 0; - p.flags = TERMP_NOSPACE; + 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; + } - 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); + 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); +}