=================================================================== RCS file: /cvs/mandoc/term_ps.c,v retrieving revision 1.66 retrieving revision 1.79 diff -u -p -r1.66 -r1.79 --- mandoc/term_ps.c 2014/08/28 01:37:12 1.66 +++ mandoc/term_ps.c 2015/11/07 14:22:29 1.79 @@ -1,15 +1,15 @@ -/* $Id: term_ps.c,v 1.66 2014/08/28 01:37:12 schwarze Exp $ */ +/* $Id: term_ps.c,v 1.79 2015/11/07 14:22:29 schwarze Exp $ */ /* * Copyright (c) 2010, 2011 Kristaps Dzonsons - * Copyright (c) 2014 Ingo Schwarze + * Copyright (c) 2014, 2015 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. * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS 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 @@ -20,6 +20,9 @@ #include #include +#if HAVE_ERR +#include +#endif #include #include #include @@ -27,11 +30,11 @@ #include #include -#include "mandoc.h" #include "mandoc_aux.h" #include "out.h" -#include "main.h" #include "term.h" +#include "manconf.h" +#include "main.h" /* These work the buffer used by the header and footer. */ #define PS_BUFSLOP 128 @@ -59,12 +62,14 @@ struct termp_ps { #define PS_INLINE (1 << 0) /* we're in a word */ #define PS_MARGINS (1 << 1) /* we're in the margins */ #define PS_NEWPAGE (1 << 2) /* new page, no words yet */ +#define PS_BACKSP (1 << 3) /* last character was backspace */ size_t pscol; /* visible column (AFM units) */ + size_t pscolnext; /* used for overstrike */ size_t psrow; /* visible row (AFM units) */ char *psmarg; /* margin buf */ size_t psmargsz; /* margin buf size */ size_t psmargcur; /* cur index in margin buf */ - char last; /* character buffer */ + char last; /* last non-backspace seen */ enum termfont lastf; /* last set font */ enum termfont nextf; /* building next font here */ size_t scale; /* font scaling factor */ @@ -85,7 +90,7 @@ struct termp_ps { size_t pdfobjsz; /* size of pdfobjs */ }; -static double ps_hspan(const struct termp *, +static int ps_hspan(const struct termp *, const struct roffsu *); static size_t ps_width(const struct termp *, int); static void ps_advance(struct termp *, size_t); @@ -104,8 +109,8 @@ __attribute__((__format__ (__printf__, 2, 3))) static void ps_printf(struct termp *, const char *, ...); static void ps_putchar(struct termp *, char); static void ps_setfont(struct termp *, enum termfont); -static void ps_setwidth(struct termp *, int, size_t); -static struct termp *pspdf_alloc(char *); +static void ps_setwidth(struct termp *, int, int); +static struct termp *pspdf_alloc(const struct manoutput *); static void pdf_obj(struct termp *, size_t); /* @@ -506,39 +511,40 @@ static const struct font fonts[TERMFONT__MAX] = { }; void * -pdf_alloc(char *outopts) +pdf_alloc(const struct manoutput *outopts) { struct termp *p; if (NULL != (p = pspdf_alloc(outopts))) p->type = TERMTYPE_PDF; - return(p); + return p; } void * -ps_alloc(char *outopts) +ps_alloc(const struct manoutput *outopts) { struct termp *p; if (NULL != (p = pspdf_alloc(outopts))) p->type = TERMTYPE_PS; - return(p); + return p; } static struct termp * -pspdf_alloc(char *outopts) +pspdf_alloc(const struct manoutput *outopts) { struct termp *p; unsigned int pagex, pagey; size_t marginx, marginy, lineheight; - const char *toks[2]; const char *pp; - char *v; p = mandoc_calloc(1, sizeof(struct termp)); p->enc = TERMENC_ASCII; + p->fontq = mandoc_reallocarray(NULL, + (p->fontsz = 8), sizeof(enum termfont)); + p->fontq[0] = p->fontl = TERMFONT_NONE; p->ps = mandoc_calloc(1, sizeof(struct termp_ps)); p->advance = ps_advance; @@ -550,20 +556,6 @@ pspdf_alloc(char *outopts) p->setwidth = ps_setwidth; p->width = ps_width; - toks[0] = "paper"; - toks[1] = NULL; - - pp = NULL; - - while (outopts && *outopts) - switch (getsubopt(&outopts, UNCONST(toks), &v)) { - case 0: - pp = v; - break; - default: - break; - } - /* Default to US letter (millimetres). */ pagex = 216; @@ -576,6 +568,7 @@ pspdf_alloc(char *outopts) * only happens once, I'm not terribly concerned. */ + pp = outopts->paper; if (pp && strcasecmp(pp, "letter")) { if (0 == strcasecmp(pp, "a3")) { pagex = 297; @@ -590,7 +583,7 @@ pspdf_alloc(char *outopts) pagex = 216; pagey = 356; } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey)) - fprintf(stderr, "%s: Unknown paper\n", pp); + warnx("%s: Unknown paper", pp); } /* @@ -624,21 +617,23 @@ pspdf_alloc(char *outopts) p->ps->lineheight = lineheight; p->defrmargin = pagex - (marginx * 2); - return(p); + return p; } static void -ps_setwidth(struct termp *p, int iop, size_t width) +ps_setwidth(struct termp *p, int iop, int width) { size_t lastwidth; lastwidth = p->ps->width; - if (0 < iop) + if (iop > 0) p->ps->width += width; - else if (0 > iop) + else if (iop == 0) + p->ps->width = width ? (size_t)width : p->ps->lastwidth; + else if (p->ps->width > (size_t)width) p->ps->width -= width; else - p->ps->width = width ? width : p->ps->lastwidth; + p->ps->width = 0; p->ps->lastwidth = lastwidth; } @@ -991,9 +986,7 @@ ps_pletter(struct termp *p, int c) switch (c) { case '(': - /* FALLTHROUGH */ case ')': - /* FALLTHROUGH */ case '\\': ps_putchar(p, '\\'); break; @@ -1047,7 +1040,7 @@ ps_fclose(struct termp *p) */ if (p->ps->last != '\0') { - assert(p->ps->last != 8); + assert( ! (p->ps->flags & PS_BACKSP)); if (p->ps->nextf != p->ps->lastf) { ps_pclose(p); ps_setfont(p, p->ps->nextf); @@ -1066,25 +1059,30 @@ ps_fclose(struct termp *p) static void ps_letter(struct termp *p, int arg) { + size_t savecol, wx; char c; c = arg >= 128 || arg <= 0 ? '?' : arg; /* - * When receiving an initial character, merely buffer it, - * because a backspace might follow to specify formatting. - * When receiving a backspace, use the buffered character - * to build the font instruction and clear the buffer. - * Only when there are two non-backspace characters in a row, - * activate the font built so far and print the first of them; - * the second, again, merely gets buffered. - * The final character will get printed from ps_fclose(). + * When receiving a backspace, merely flag it. + * We don't know yet whether it is + * a font instruction or an overstrike. */ - if (c == 8) { + if (c == '\b') { assert(p->ps->last != '\0'); - assert(p->ps->last != 8); - if ('_' == p->ps->last) { + assert( ! (p->ps->flags & PS_BACKSP)); + p->ps->flags |= PS_BACKSP; + return; + } + + /* + * Decode font instructions. + */ + + if (p->ps->flags & PS_BACKSP) { + if (p->ps->last == '_') { switch (p->ps->nextf) { case TERMFONT_BI: break; @@ -1094,7 +1092,11 @@ ps_letter(struct termp *p, int arg) default: p->ps->nextf = TERMFONT_UNDER; } - } else { + p->ps->last = c; + p->ps->flags &= ~PS_BACKSP; + return; + } + if (p->ps->last == c) { switch (p->ps->nextf) { case TERMFONT_BI: break; @@ -1104,16 +1106,81 @@ ps_letter(struct termp *p, int arg) default: p->ps->nextf = TERMFONT_BOLD; } + p->ps->flags &= ~PS_BACKSP; + return; } - } else if (p->ps->last != '\0' && p->ps->last != 8) { + + /* + * This is not a font instruction, but rather + * the next character. Prepare for overstrike. + */ + + savecol = p->ps->pscol; + } else + savecol = SIZE_MAX; + + /* + * We found the next character, so the font instructions + * for the previous one are complete. + * Use them and print it. + */ + + if (p->ps->last != '\0') { if (p->ps->nextf != p->ps->lastf) { ps_pclose(p); ps_setfont(p, p->ps->nextf); } p->ps->nextf = TERMFONT_NONE; + + /* + * For an overstrike, if a previous character + * was wider, advance to center the new one. + */ + + if (p->ps->pscolnext) { + wx = fonts[p->ps->lastf].gly[(int)p->ps->last-32].wx; + if (p->ps->pscol + wx < p->ps->pscolnext) + p->ps->pscol = (p->ps->pscol + + p->ps->pscolnext - wx) / 2; + } + ps_pletter(p, p->ps->last); + + /* + * For an overstrike, if a previous character + * was wider, advance to the end of the old one. + */ + + if (p->ps->pscol < p->ps->pscolnext) { + ps_pclose(p); + p->ps->pscol = p->ps->pscolnext; + } } + + /* + * Do not print the current character yet because font + * instructions might follow; only remember it. + * For the first character, nothing else is done. + * The final character will get printed from ps_fclose(). + */ + p->ps->last = c; + + /* + * For an overstrike, back up to the previous position. + * If the previous character is wider than any it overstrikes, + * remember the current position, because it might also be + * wider than all that will overstrike it. + */ + + if (savecol != SIZE_MAX) { + if (p->ps->pscolnext < p->ps->pscol) + p->ps->pscolnext = p->ps->pscol; + ps_pclose(p); + p->ps->pscol = savecol; + p->ps->flags &= ~PS_BACKSP; + } else + p->ps->pscolnext = 0; } static void @@ -1202,10 +1269,10 @@ ps_width(const struct termp *p, int c) else c -= 32; - return((size_t)fonts[(int)TERMFONT_NONE].gly[c].wx); + return (size_t)fonts[(int)TERMFONT_NONE].gly[c].wx; } -static double +static int ps_hspan(const struct termp *p, const struct roffsu *su) { double r; @@ -1257,7 +1324,7 @@ ps_hspan(const struct termp *p, const struct roffsu *s break; } - return(r); + return r * 24.0; } static void