=================================================================== RCS file: /cvs/mandoc/term.c,v retrieving revision 1.232 retrieving revision 1.238 diff -u -p -r1.232 -r1.238 --- mandoc/term.c 2014/10/28 18:49:33 1.232 +++ mandoc/term.c 2014/12/19 17:12:04 1.238 @@ -1,4 +1,4 @@ -/* $Id: term.c,v 1.232 2014/10/28 18:49:33 schwarze Exp $ */ +/* $Id: term.c,v 1.238 2014/12/19 17:12:04 schwarze Exp $ */ /* * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons * Copyright (c) 2010-2014 Ingo Schwarze @@ -43,6 +43,7 @@ term_free(struct termp *p) { free(p->buf); + free(p->fontq); free(p); } @@ -100,7 +101,7 @@ term_flushln(struct termp *p) size_t j; /* temporary loop index for p->buf */ size_t jhy; /* last hyph before overflow w/r/t j */ size_t maxvis; /* output position of visible boundary */ - size_t mmax; /* used in calculating bp */ + size_t rmargin; /* the rightmost of the two margins */ /* * First, establish the maximum columns of "visible" content. @@ -113,13 +114,17 @@ term_flushln(struct termp *p) * is negative, it gets sign extended. Subtracting that * very large size_t effectively adds a small number to dv. */ - assert (p->rmargin >= p->offset); - dv = p->rmargin - p->offset; + rmargin = p->rmargin > p->offset ? 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; + if (p->flags & TERMP_NOBREAK) { + dv = p->maxrmargin > p->offset ? + p->maxrmargin - p->offset : 0; + bp = (int)dv > p->overstep ? + dv - (size_t)p->overstep : 0; + } else + bp = maxvis; /* * Calculate the required amount of padding. @@ -188,8 +193,8 @@ term_flushln(struct termp *p) (*p->endline)(p); p->viscol = 0; if (TERMP_BRIND & p->flags) { - vbl = p->rmargin; - vend += p->rmargin - p->offset; + vbl = rmargin; + vend += rmargin - p->offset; } else vbl = p->offset; @@ -254,8 +259,10 @@ term_flushln(struct termp *p) * If there was trailing white space, it was not printed; * so reset the cursor position accordingly. */ - if (vis) + if (vis > vbl) vis -= vbl; + else + vis = 0; p->col = 0; p->overstep = 0; @@ -323,6 +330,7 @@ term_vspace(struct termp *p) (*p->endline)(p); } +/* Swap current and previous font; for \fP and .ft P */ void term_fontlast(struct termp *p) { @@ -333,6 +341,7 @@ term_fontlast(struct termp *p) p->fontq[p->fonti] = f; } +/* Set font, save current, discard previous; for \f, .ft, .B etc. */ void term_fontrepl(struct termp *p, enum termfont f) { @@ -341,38 +350,39 @@ term_fontrepl(struct termp *p, enum termfont f) p->fontq[p->fonti] = f; } +/* Set font, save previous. */ 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; + if (++p->fonti == p->fontsz) { + p->fontsz += 8; + p->fontq = mandoc_reallocarray(p->fontq, + p->fontsz, sizeof(enum termfont *)); + } + p->fontq[p->fonti] = f; } -const void * +/* Retrieve pointer to current font. */ +const enum termfont * term_fontq(struct termp *p) { return(&p->fontq[p->fonti]); } -enum termfont -term_fonttop(struct termp *p) -{ - - return(p->fontq[p->fonti]); -} - +/* Flush to make the saved pointer current again. */ void -term_fontpopq(struct termp *p, const void *key) +term_fontpopq(struct termp *p, const enum termfont *key) { - while (p->fonti >= 0 && key < (void *)(p->fontq + p->fonti)) + while (p->fonti >= 0 && key < p->fontq + p->fonti) p->fonti--; assert(p->fonti >= 0); } +/* Pop one font off the stack. */ void term_fontpop(struct termp *p) { @@ -391,7 +401,6 @@ term_word(struct termp *p, const char *word) { const char nbrsp[2] = { ASCII_NBRSP, 0 }; const char *seq, *cp; - char c; int sz, uc; size_t ssz; enum mandoc_esc esc; @@ -412,7 +421,7 @@ term_word(struct termp *p, const char *word) else p->flags |= TERMP_NOSPACE; - p->flags &= ~TERMP_SENTENCE; + p->flags &= ~(TERMP_SENTENCE | TERMP_NONEWLINE); while ('\0' != *word) { if ('\\' != *word) { @@ -443,16 +452,11 @@ term_word(struct termp *p, const char *word) switch (esc) { case ESCAPE_UNICODE: uc = mchars_num2uc(seq + 1, sz - 1); - if (p->enc == TERMENC_ASCII) { - cp = ascii_uc2str(uc); - encode(p, cp, strlen(cp)); - } else - encode1(p, uc); break; case ESCAPE_NUMBERED: - c = mchars_num2char(seq, sz); - if ('\0' != c) - encode(p, &c, 1); + uc = mchars_num2char(seq, sz); + if (uc < 0) + continue; break; case ESCAPE_SPECIAL: if (p->enc == TERMENC_ASCII) { @@ -465,36 +469,51 @@ term_word(struct termp *p, const char *word) if (uc > 0) encode1(p, uc); } - break; + continue; case ESCAPE_FONTBOLD: term_fontrepl(p, TERMFONT_BOLD); - break; + continue; case ESCAPE_FONTITALIC: term_fontrepl(p, TERMFONT_UNDER); - break; + continue; case ESCAPE_FONTBI: term_fontrepl(p, TERMFONT_BI); - break; + continue; case ESCAPE_FONT: /* FALLTHROUGH */ case ESCAPE_FONTROMAN: term_fontrepl(p, TERMFONT_NONE); - break; + continue; case ESCAPE_FONTPREV: term_fontlast(p); - break; + continue; case ESCAPE_NOSPACE: if (TERMP_SKIPCHAR & p->flags) p->flags &= ~TERMP_SKIPCHAR; else if ('\0' == *word) - p->flags |= TERMP_NOSPACE; - break; + p->flags |= (TERMP_NOSPACE | TERMP_NONEWLINE); + continue; case ESCAPE_SKIPCHAR: p->flags |= TERMP_SKIPCHAR; - break; + continue; default: - break; + continue; } + + /* + * Common handling for Unicode and numbered + * character escape sequences. + */ + + if (p->enc == TERMENC_ASCII) { + cp = ascii_uc2str(uc); + encode(p, cp, strlen(cp)); + } else { + if ((uc < 0x20 && uc != 0x09) || + (uc > 0x7E && uc < 0xA0)) + uc = 0xFFFD; + encode1(p, uc); + } } p->flags &= ~TERMP_NBRWORD; } @@ -539,7 +558,7 @@ encode1(struct termp *p, int c) if (p->col + 6 >= p->maxcols) adjbuf(p, p->col + 6); - f = term_fonttop(p); + f = *term_fontq(p); if (TERMFONT_UNDER == f || TERMFONT_BI == f) { p->buf[p->col++] = '_'; @@ -571,7 +590,7 @@ encode(struct termp *p, const char *word, size_t sz) * character by character. */ - if (TERMFONT_NONE == term_fonttop(p)) { + if (*term_fontq(p) == TERMFONT_NONE) { if (p->col + sz >= p->maxcols) adjbuf(p, p->col + sz); for (i = 0; i < sz; i++) @@ -645,7 +664,7 @@ size_t term_strlen(const struct termp *p, const char *cp) { size_t sz, rsz, i; - int ssz, skip, c; + int ssz, skip, uc; const char *seq, *rhs; enum mandoc_esc esc; static const char rej[] = { '\\', ASCII_NBRSP, ASCII_HYPH, @@ -675,43 +694,60 @@ term_strlen(const struct termp *p, const char *cp) switch (esc) { case ESCAPE_UNICODE: - c = mchars_num2uc(seq + 1, sz - 1); - if (p->enc == TERMENC_ASCII) { - rhs = ascii_uc2str(c); - rsz = strlen(rhs); - } else - sz += cond_width(p, c, &skip); + uc = mchars_num2uc(seq + 1, ssz - 1); break; case ESCAPE_NUMBERED: - c = mchars_num2char(seq, ssz); - if ('\0' != c) - sz += cond_width(p, c, &skip); + uc = mchars_num2char(seq, ssz); + if (uc < 0) + continue; break; case ESCAPE_SPECIAL: - if (p->enc == TERMENC_ASCII) + if (p->enc == TERMENC_ASCII) { rhs = mchars_spec2str(p->symtab, seq, ssz, &rsz); - else { - c = mchars_spec2cp(p->symtab, + if (rhs != NULL) + break; + } else { + uc = mchars_spec2cp(p->symtab, seq, ssz); - if (c > 0) - sz += cond_width(p, c, &skip); + if (uc > 0) + sz += cond_width(p, uc, &skip); } - break; + continue; case ESCAPE_SKIPCHAR: skip = 1; - break; + continue; default: - break; + continue; } - if (NULL == rhs) - break; + /* + * Common handling for Unicode and numbered + * character escape sequences. + */ + if (rhs == NULL) { + if (p->enc == TERMENC_ASCII) { + rhs = ascii_uc2str(uc); + rsz = strlen(rhs); + } else { + if ((uc < 0x20 && uc != 0x09) || + (uc > 0x7E && uc < 0xA0)) + uc = 0xFFFD; + sz += cond_width(p, uc, &skip); + continue; + } + } + if (skip) { skip = 0; break; } + + /* + * Common handling for all escape sequences + * printing more than one character. + */ for (i = 0; i < rsz; i++) sz += (*p->width)(p, *rhs++);