]> git.cameronkatri.com Git - mandoc.git/blobdiff - term_ps.c
make the path to ar(1) configurable, needed by NixOS;
[mandoc.git] / term_ps.c
index f116b792063a2a1da5b0e038c076d46ee3745fb8..374d3d9a6abd2b16deb853553b54138f53cf5ff3 100644 (file)
--- a/term_ps.c
+++ b/term_ps.c
@@ -1,7 +1,8 @@
-/*     $Id: term_ps.c,v 1.77 2015/10/12 00:08:16 schwarze Exp $ */
+/* $Id: term_ps.c,v 1.92 2020/09/06 14:45:22 schwarze Exp $ */
 /*
  * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2014,2015,2016,2017,2020 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2017 Marc Espie <espie@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
@@ -20,7 +21,9 @@
 #include <sys/types.h>
 
 #include <assert.h>
+#if HAVE_ERR
 #include <err.h>
+#endif
 #include <stdarg.h>
 #include <stdint.h>
 #include <stdio.h>
@@ -64,6 +67,7 @@ struct        termp_ps {
        size_t            pscol;        /* visible column (AFM units) */
        size_t            pscolnext;    /* used for overstrike */
        size_t            psrow;        /* visible row (AFM units) */
+       size_t            lastrow;      /* psrow of the previous word */
        char             *psmarg;       /* margin buf */
        size_t            psmargsz;     /* margin buf size */
        size_t            psmargcur;    /* cur index in margin buf */
@@ -75,6 +79,7 @@ struct        termp_ps {
        size_t            lineheight;   /* line height (AFM units) */
        size_t            top;          /* body top (AFM units) */
        size_t            bottom;       /* body bottom (AFM units) */
+       const char       *medianame;    /* for DocumentMedia and PageSize */
        size_t            height;       /* page height (AFM units */
        size_t            width;        /* page width (AFM units) */
        size_t            lastwidth;    /* page width before last ll */
@@ -96,20 +101,17 @@ static     void              ps_begin(struct termp *);
 static void              ps_closepage(struct termp *);
 static void              ps_end(struct termp *);
 static void              ps_endline(struct termp *);
-static void              ps_fclose(struct termp *);
 static void              ps_growbuf(struct termp *, size_t);
 static void              ps_letter(struct termp *, int);
 static void              ps_pclose(struct termp *);
+static void              ps_plast(struct termp *);
 static void              ps_pletter(struct termp *, int);
-#if __GNUC__ - 0 >= 4
-__attribute__((__format__ (__printf__, 2, 3)))
-#endif
-static void              ps_printf(struct termp *, const char *, ...);
+static void              ps_printf(struct termp *, const char *, ...)
+                               __attribute__((__format__ (__printf__, 2, 3)));
 static void              ps_putchar(struct termp *, char);
 static void              ps_setfont(struct termp *, enum termfont);
 static void              ps_setwidth(struct termp *, int, int);
-static struct termp     *pspdf_alloc(const struct mchars *,
-                               const struct manoutput *);
+static struct termp     *pspdf_alloc(const struct manoutput *, enum termtype);
 static void              pdf_obj(struct termp *, size_t);
 
 /*
@@ -510,42 +512,35 @@ static    const struct font fonts[TERMFONT__MAX] = {
 };
 
 void *
-pdf_alloc(const struct mchars *mchars, const struct manoutput *outopts)
+pdf_alloc(const struct manoutput *outopts)
 {
-       struct termp    *p;
-
-       if (NULL != (p = pspdf_alloc(mchars, outopts)))
-               p->type = TERMTYPE_PDF;
-
-       return p;
+       return pspdf_alloc(outopts, TERMTYPE_PDF);
 }
 
 void *
-ps_alloc(const struct mchars *mchars, const struct manoutput *outopts)
+ps_alloc(const struct manoutput *outopts)
 {
-       struct termp    *p;
-
-       if (NULL != (p = pspdf_alloc(mchars, outopts)))
-               p->type = TERMTYPE_PS;
-
-       return p;
+       return pspdf_alloc(outopts, TERMTYPE_PS);
 }
 
 static struct termp *
-pspdf_alloc(const struct mchars *mchars, const struct manoutput *outopts)
+pspdf_alloc(const struct manoutput *outopts, enum termtype type)
 {
        struct termp    *p;
        unsigned int     pagex, pagey;
        size_t           marginx, marginy, lineheight;
        const char      *pp;
 
-       p = mandoc_calloc(1, sizeof(struct termp));
-       p->symtab = mchars;
+       p = mandoc_calloc(1, sizeof(*p));
+       p->tcol = p->tcols = mandoc_calloc(1, sizeof(*p->tcol));
+       p->maxtcol = 1;
+       p->type = type;
+
        p->enc = TERMENC_ASCII;
        p->fontq = mandoc_reallocarray(NULL,
-           (p->fontsz = 8), sizeof(enum termfont));
+           (p->fontsz = 8), sizeof(*p->fontq));
        p->fontq[0] = p->fontl = TERMFONT_NONE;
-       p->ps = mandoc_calloc(1, sizeof(struct termp_ps));
+       p->ps = mandoc_calloc(1, sizeof(*p->ps));
 
        p->advance = ps_advance;
        p->begin = ps_begin;
@@ -558,6 +553,7 @@ pspdf_alloc(const struct mchars *mchars, const struct manoutput *outopts)
 
        /* Default to US letter (millimetres). */
 
+       p->ps->medianame = "Letter";
        pagex = 216;
        pagey = 279;
 
@@ -569,20 +565,26 @@ pspdf_alloc(const struct mchars *mchars, const struct manoutput *outopts)
         */
 
        pp = outopts->paper;
-       if (pp && strcasecmp(pp, "letter")) {
-               if (0 == strcasecmp(pp, "a3")) {
+       if (pp != NULL && strcasecmp(pp, "letter") != 0) {
+               if (strcasecmp(pp, "a3") == 0) {
+                       p->ps->medianame = "A3";
                        pagex = 297;
                        pagey = 420;
-               } else if (0 == strcasecmp(pp, "a4")) {
+               } else if (strcasecmp(pp, "a4") == 0) {
+                       p->ps->medianame = "A4";
                        pagex = 210;
                        pagey = 297;
-               } else if (0 == strcasecmp(pp, "a5")) {
+               } else if (strcasecmp(pp, "a5") == 0) {
+                       p->ps->medianame = "A5";
                        pagex = 148;
                        pagey = 210;
-               } else if (0 == strcasecmp(pp, "legal")) {
+               } else if (strcasecmp(pp, "legal") == 0) {
+                       p->ps->medianame = "Legal";
                        pagex = 216;
                        pagey = 356;
-               } else if (2 != sscanf(pp, "%ux%u", &pagex, &pagey))
+               } else if (sscanf(pp, "%ux%u", &pagex, &pagey) == 2)
+                       p->ps->medianame = "CustomSize";
+               else
                        warnx("%s: Unknown paper", pp);
        }
 
@@ -595,8 +597,8 @@ pspdf_alloc(const struct mchars *mchars, const struct manoutput *outopts)
 
        /* Remember millimetres -> AFM units. */
 
-       pagex = PNT2AFM(p, ((double)pagex * 2.834));
-       pagey = PNT2AFM(p, ((double)pagey * 2.834));
+       pagex = PNT2AFM(p, ((double)pagex * 72.0 / 25.4));
+       pagey = PNT2AFM(p, ((double)pagey * 72.0 / 25.4));
 
        /* Margins are 1/9 the page x and y. */
 
@@ -644,10 +646,8 @@ pspdf_free(void *arg)
 
        p = (struct termp *)arg;
 
-       if (p->ps->psmarg)
-               free(p->ps->psmarg);
-       if (p->ps->pdfobjs)
-               free(p->ps->pdfobjs);
+       free(p->ps->psmarg);
+       free(p->ps->pdfobjs);
 
        free(p->ps);
        term_free(p);
@@ -734,7 +734,7 @@ ps_closepage(struct termp *p)
 
        /*
         * Close out a page that we've already flushed to output.  In
-        * PostScript, we simply note that the page must be showed.  In
+        * PostScript, we simply note that the page must be shown.  In
         * PDF, we must now create the Length, Resource, and Page node
         * for the page contents.
         */
@@ -743,8 +743,6 @@ ps_closepage(struct termp *p)
        ps_printf(p, "%s", p->ps->psmarg);
 
        if (TERMTYPE_PS != p->type) {
-               ps_printf(p, "ET\n");
-
                len = p->ps->pdfbytes - p->ps->pdflastpg;
                base = p->ps->pages * 4 + p->ps->pdfbody;
 
@@ -760,7 +758,7 @@ ps_closepage(struct termp *p)
                ps_printf(p, "/Font <<\n");
                for (i = 0; i < (int)TERMFONT__MAX; i++)
                        ps_printf(p, "/F%d %d 0 R\n", i, 3 + i);
-               ps_printf(p, ">>\n>>\n");
+               ps_printf(p, ">>\n>>\nendobj\n");
 
                /* Page node. */
                pdf_obj(p, base + 3);
@@ -784,6 +782,9 @@ ps_end(struct termp *p)
 {
        size_t           i, xref, base;
 
+       ps_plast(p);
+       ps_pclose(p);
+
        /*
         * At the end of the file, do one last showpage.  This is the
         * same behaviour as groff(1) and works for multiple pages as
@@ -822,7 +823,7 @@ ps_end(struct termp *p)
        ps_printf(p, "<<\n");
        ps_printf(p, "/Type /Catalog\n");
        ps_printf(p, "/Pages 2 0 R\n");
-       ps_printf(p, ">>\n");
+       ps_printf(p, ">>\nendobj\n");
        xref = p->ps->pdfbytes;
        ps_printf(p, "xref\n");
        ps_printf(p, "0 %zu\n", base + 1);
@@ -846,6 +847,7 @@ ps_end(struct termp *p)
 static void
 ps_begin(struct termp *p)
 {
+       size_t           width, height;
        int              i;
 
        /*
@@ -863,6 +865,7 @@ ps_begin(struct termp *p)
        p->ps->flags = PS_MARGINS;
        p->ps->pscol = p->ps->left;
        p->ps->psrow = p->ps->header;
+       p->ps->lastrow = 0; /* impossible row */
 
        ps_setfont(p, TERMFONT_NONE);
 
@@ -887,21 +890,44 @@ ps_begin(struct termp *p)
         */
 
        if (TERMTYPE_PS == p->type) {
+               width = AFM2PNT(p, p->ps->width);
+               height = AFM2PNT(p, p->ps->height);
+
                ps_printf(p, "%%!PS-Adobe-3.0\n");
                ps_printf(p, "%%%%DocumentData: Clean7Bit\n");
                ps_printf(p, "%%%%Orientation: Portrait\n");
                ps_printf(p, "%%%%Pages: (atend)\n");
                ps_printf(p, "%%%%PageOrder: Ascend\n");
-               ps_printf(p, "%%%%DocumentMedia: "
-                   "Default %zu %zu 0 () ()\n",
-                   (size_t)AFM2PNT(p, p->ps->width),
-                   (size_t)AFM2PNT(p, p->ps->height));
+               ps_printf(p, "%%%%DocumentMedia: man-%s %zu %zu 0 () ()\n",
+                   p->ps->medianame, width, height);
                ps_printf(p, "%%%%DocumentNeededResources: font");
 
                for (i = 0; i < (int)TERMFONT__MAX; i++)
                        ps_printf(p, " %s", fonts[i].name);
 
-               ps_printf(p, "\n%%%%EndComments\n");
+               ps_printf(p, "\n%%%%DocumentSuppliedResources: "
+                   "procset MandocProcs 1.0 0\n");
+               ps_printf(p, "%%%%EndComments\n");
+               ps_printf(p, "%%%%BeginProlog\n");
+               ps_printf(p, "%%%%BeginResource: procset MandocProcs "
+                   "10170 10170\n");
+               /* The font size is effectively hard-coded for now. */
+               ps_printf(p, "/fs %zu def\n", p->ps->scale);
+               for (i = 0; i < (int)TERMFONT__MAX; i++)
+                       ps_printf(p, "/f%d { /%s fs selectfont } def\n",
+                           i, fonts[i].name);
+               ps_printf(p, "/s { 3 1 roll moveto show } bind def\n");
+               ps_printf(p, "/c { exch currentpoint exch pop "
+                   "moveto show } bind def\n");
+               ps_printf(p, "%%%%EndResource\n");
+               ps_printf(p, "%%%%EndProlog\n");
+               ps_printf(p, "%%%%BeginSetup\n");
+               ps_printf(p, "%%%%BeginFeature: *PageSize %s\n",
+                   p->ps->medianame);
+               ps_printf(p, "<</PageSize [%zu %zu]>>setpagedevice\n",
+                   width, height);
+               ps_printf(p, "%%%%EndFeature\n");
+               ps_printf(p, "%%%%EndSetup\n");
        } else {
                ps_printf(p, "%%PDF-1.1\n");
                pdf_obj(p, 1);
@@ -916,7 +942,7 @@ ps_begin(struct termp *p)
                        ps_printf(p, "/Subtype /Type1\n");
                        ps_printf(p, "/Name /F%d\n", i);
                        ps_printf(p, "/BaseFont /%s\n", fonts[i].name);
-                       ps_printf(p, ">>\n");
+                       ps_printf(p, ">>\nendobj\n");
                }
        }
 
@@ -941,9 +967,7 @@ ps_pletter(struct termp *p, int c)
                if (TERMTYPE_PS == p->type) {
                        ps_printf(p, "%%%%Page: %zu %zu\n",
                            p->ps->pages + 1, p->ps->pages + 1);
-                       ps_printf(p, "/%s %zu selectfont\n",
-                           fonts[(int)p->ps->lastf].name,
-                           p->ps->scale);
+                       ps_printf(p, "f%d\n", (int)p->ps->lastf);
                } else {
                        pdf_obj(p, p->ps->pdfbody +
                            p->ps->pages * 4);
@@ -968,10 +992,13 @@ ps_pletter(struct termp *p, int c)
                        ps_printf(p, "%.3f %.3f Td\n(",
                            AFM2PNT(p, p->ps->pscol),
                            AFM2PNT(p, p->ps->psrow));
-               } else
-                       ps_printf(p, "%.3f %.3f moveto\n(",
-                           AFM2PNT(p, p->ps->pscol),
-                           AFM2PNT(p, p->ps->psrow));
+               } else {
+                       ps_printf(p, "%.3f", AFM2PNT(p, p->ps->pscol));
+                       if (p->ps->psrow != p->ps->lastrow)
+                               ps_printf(p, " %.3f",
+                                   AFM2PNT(p, p->ps->psrow));
+                       ps_printf(p, "(");
+               }
                p->ps->flags |= PS_INLINE;
        }
 
@@ -1019,47 +1046,65 @@ ps_pclose(struct termp *p)
        if ( ! (PS_INLINE & p->ps->flags))
                return;
 
-       if (TERMTYPE_PS != p->type) {
+       if (TERMTYPE_PS != p->type)
                ps_printf(p, ") Tj\nET\n");
-       } else
-               ps_printf(p, ") show\n");
+       else if (p->ps->psrow == p->ps->lastrow)
+               ps_printf(p, ")c\n");
+       else {
+               ps_printf(p, ")s\n");
+               p->ps->lastrow = p->ps->psrow;
+       }
 
        p->ps->flags &= ~PS_INLINE;
 }
 
+/* If we have a `last' char that wasn't printed yet, print it now. */
 static void
-ps_fclose(struct termp *p)
+ps_plast(struct termp *p)
 {
+       size_t   wx;
+
+       if (p->ps->last == '\0')
+               return;
+
+       /* Check the font mode; open a new scope if it doesn't match. */
+
+       if (p->ps->nextf != p->ps->lastf) {
+               ps_pclose(p);
+               ps_setfont(p, p->ps->nextf);
+       }
+       p->ps->nextf = TERMFONT_NONE;
 
        /*
-        * Strong closure: if we have a last-char, spit it out after
-        * checking that we're in the right font mode.  This will of
-        * course open a new scope, if applicable.
-        *
-        * Following this, close out any scope that's open.
+        * For an overstrike, if a previous character
+        * was wider, advance to center the new one.
         */
 
-       if (p->ps->last != '\0') {
-               assert( ! (p->ps->flags & PS_BACKSP));
-               if (p->ps->nextf != p->ps->lastf) {
-                       ps_pclose(p);
-                       ps_setfont(p, p->ps->nextf);
-               }
-               p->ps->nextf = TERMFONT_NONE;
-               ps_pletter(p, p->ps->last);
-               p->ps->last = '\0';
+       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;
        }
 
-       if ( ! (PS_INLINE & p->ps->flags))
-               return;
+       ps_pletter(p, p->ps->last);
+       p->ps->last = '\0';
 
-       ps_pclose(p);
+       /*
+        * 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;
+       }
 }
 
 static void
 ps_letter(struct termp *p, int arg)
 {
-       size_t          savecol, wx;
+       size_t          savecol;
        char            c;
 
        c = arg >= 128 || arg <= 0 ? '?' : arg;
@@ -1125,43 +1170,12 @@ ps_letter(struct termp *p, int arg)
         * 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;
-               }
-       }
+       ps_plast(p);
 
        /*
         * 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().
+        * instructions might follow; only remember the character.
+        * It will get printed later from ps_plast().
         */
 
        p->ps->last = c;
@@ -1194,7 +1208,8 @@ ps_advance(struct termp *p, size_t len)
         * and readjust our column settings.
         */
 
-       ps_fclose(p);
+       ps_plast(p);
+       ps_pclose(p);
        p->ps->pscol += len;
 }
 
@@ -1204,7 +1219,8 @@ ps_endline(struct termp *p)
 
        /* Close out any scopes we have open: we're at eoln. */
 
-       ps_fclose(p);
+       ps_plast(p);
+       ps_pclose(p);
 
        /*
         * If we're in the margin, don't try to recalculate our current
@@ -1235,6 +1251,12 @@ ps_endline(struct termp *p)
        }
 
        ps_closepage(p);
+
+       if ((int)p->tcol->offset > p->ti)
+               p->tcol->offset -= p->ti;
+       else 
+               p->tcol->offset = 0;
+       p->ti = 0;
 }
 
 static void
@@ -1253,8 +1275,7 @@ ps_setfont(struct termp *p, enum termfont f)
                return;
 
        if (TERMTYPE_PS == p->type)
-               ps_printf(p, "/%s %zu selectfont\n",
-                   fonts[(int)f].name, p->ps->scale);
+               ps_printf(p, "f%d\n", (int)f);
        else
                ps_printf(p, "/F%d %zu Tf\n",
                    (int)f, p->ps->scale);