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Diff for /mandoc/term_ps.c between version 1.8 and 1.9

version 1.8, 2010/06/11 15:26:39 version 1.9, 2010/06/11 16:58:20
Line 53 
Line 53 
                 } \                  } \
         } while (/* CONSTCOND */ 0)          } while (/* CONSTCOND */ 0)
   
   
 static  void              ps_letter(struct termp *, char);  static  void              ps_letter(struct termp *, char);
 static  void              ps_begin(struct termp *);  static  void              ps_begin(struct termp *);
 static  void              ps_end(struct termp *);  static  void              ps_end(struct termp *);
 static  void              ps_advance(struct termp *, size_t);  static  void              ps_advance(struct termp *, size_t);
 static  void              ps_endline(struct termp *);  static  void              ps_endline(struct termp *);
   static  void              ps_fclose(struct termp *);
   static  void              ps_pclose(struct termp *);
 static  void              ps_pletter(struct termp *, char);  static  void              ps_pletter(struct termp *, char);
 static  void              ps_printf(struct termp *, const char *, ...);  static  void              ps_printf(struct termp *, const char *, ...);
 static  void              ps_putchar(struct termp *, char);  static  void              ps_putchar(struct termp *, char);
   static  void              ps_setfont(struct termp *, enum termfont);
   
   
 void *  void *
Line 175  static void
Line 179  static void
 ps_begin(struct termp *p)  ps_begin(struct termp *p)
 {  {
   
         /*          /*
          * Emit the standard PostScript prologue, set our initial page           * Print margins into margin buffer.  Nothing gets output to the
          * position, then run pageopen() on the initial page.           * screen yet, so we don't need to initialise the primary state.
          */           */
   
         printf("%s\n", "%!PS");  
         printf("%s\n", "/Courier");  
         printf("%s\n", "10 selectfont");  
   
         p->engine.ps.psstate = 0;  
   
         if (p->engine.ps.psmarg) {          if (p->engine.ps.psmarg) {
                 assert(p->engine.ps.psmargsz);                  assert(p->engine.ps.psmargsz);
                 p->engine.ps.psmarg[0] = '\0';                  p->engine.ps.psmarg[0] = '\0';
         }          }
   
         p->engine.ps.psmargcur = 0;          p->engine.ps.psmargcur = 0;
           p->engine.ps.psstate = PS_MARGINS;
         /*  
          * Now dump the margins into our margin buffer.  If we don't do  
          * this, we'd break any current state to run the header and  
          * footer with each and evern new page.  
          */  
   
         p->engine.ps.pscol = PS_CHAR_LEFT;          p->engine.ps.pscol = PS_CHAR_LEFT;
         p->engine.ps.psrow = PS_CHAR_TOPMARG;          p->engine.ps.psrow = PS_CHAR_TOPMARG;
   
         p->engine.ps.psstate |= PS_MARGINS;          ps_setfont(p, TERMFONT_NONE);
   
         (*p->headf)(p, p->argf);          (*p->headf)(p, p->argf);
         (*p->endline)(p);          (*p->endline)(p);
   
         p->engine.ps.psstate &= ~PS_MARGINS;  
         assert(0 == p->engine.ps.psstate);  
   
         p->engine.ps.pscol = PS_CHAR_LEFT;          p->engine.ps.pscol = PS_CHAR_LEFT;
         p->engine.ps.psrow = PS_CHAR_BOTMARG;          p->engine.ps.psrow = PS_CHAR_BOTMARG;
         p->engine.ps.psstate |= PS_MARGINS;  
   
         (*p->footf)(p, p->argf);          (*p->footf)(p, p->argf);
         (*p->endline)(p);          (*p->endline)(p);
   
         p->engine.ps.psstate &= ~PS_MARGINS;          p->engine.ps.psstate &= ~PS_MARGINS;
   
         assert(0 == p->engine.ps.psstate);          assert(0 == p->engine.ps.psstate);
           assert(p->engine.ps.psmarg);
           assert('\0' != p->engine.ps.psmarg[0]);
   
           /*
            * Print header and initialise page state.  Following this,
            * stuff gets printed to the screen, so make sure we're sane.
            */
   
           printf("%s\n", "%!PS");
           ps_setfont(p, TERMFONT_NONE);
         p->engine.ps.pscol = PS_CHAR_LEFT;          p->engine.ps.pscol = PS_CHAR_LEFT;
         p->engine.ps.psrow = PS_CHAR_TOP;          p->engine.ps.psrow = PS_CHAR_TOP;
   
         assert(p->engine.ps.psmarg);  
         assert('\0' != p->engine.ps.psmarg[0]);  
 }  }
   
   
Line 232  static void
Line 227  static void
 ps_pletter(struct termp *p, char c)  ps_pletter(struct termp *p, char c)
 {  {
   
           /*
            * If we're not in a PostScript "word" context, then open one
            * now at the current cursor.
            */
   
         if ( ! (PS_INLINE & p->engine.ps.psstate)) {          if ( ! (PS_INLINE & p->engine.ps.psstate)) {
                 /*  
                  * If we're not in a PostScript "word" context, then  
                  * open one now at the current cursor.  
                  */  
                 ps_printf(p, "%zu %zu moveto\n(",                  ps_printf(p, "%zu %zu moveto\n(",
                                 p->engine.ps.pscol,                                  p->engine.ps.pscol,
                                 p->engine.ps.psrow);                                  p->engine.ps.psrow);
Line 263  ps_pletter(struct termp *p, char c)
Line 259  ps_pletter(struct termp *p, char c)
         }          }
   
         /* Write the character and adjust where we are on the page. */          /* Write the character and adjust where we are on the page. */
   
         ps_putchar(p, c);          ps_putchar(p, c);
         p->engine.ps.pscol += PS_CHAR_WIDTH;          p->engine.ps.pscol += PS_CHAR_WIDTH;
 }  }
   
   
 static void  static void
   ps_pclose(struct termp *p)
   {
   
           /*
            * Spit out that we're exiting a word context (this is a
            * "partial close" because we don't check the last-char buffer
            * or anything).
            */
   
           if ( ! (PS_INLINE & p->engine.ps.psstate))
                   return;
   
           ps_printf(p, ") show\n");
           p->engine.ps.psstate &= ~PS_INLINE;
   }
   
   
   static void
   ps_fclose(struct termp *p)
   {
   
           /*
            * 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.
            */
   
           if ('\0' != p->engine.ps.last) {
                   if (p->engine.ps.lastf != TERMFONT_NONE) {
                           ps_pclose(p);
                           ps_setfont(p, TERMFONT_NONE);
                   }
                   ps_pletter(p, p->engine.ps.last);
                   p->engine.ps.last = '\0';
           }
   
           if ( ! (PS_INLINE & p->engine.ps.psstate))
                   return;
   
           ps_pclose(p);
   }
   
   
   static void
 ps_letter(struct termp *p, char c)  ps_letter(struct termp *p, char c)
 {  {
         char            cc;          char            cc;
   
           /*
            * State machine dictates whether to buffer the last character
            * or not.  Basically, encoded words are detected by checking if
            * we're an "8" and switching on the buffer.  Then we put "8" in
            * our buffer, and on the next charater, flush both character
            * and buffer.  Thus, "regular" words are detected by having a
            * regular character and a regular buffer character.
            */
   
         if ('\0' == p->engine.ps.last) {          if ('\0' == p->engine.ps.last) {
                 assert(8 != c);                  assert(8 != c);
                 p->engine.ps.last = c;                  p->engine.ps.last = c;
                 return;                  return;
         } else if (8 == p->engine.ps.last) {          } else if (8 == p->engine.ps.last) {
                 assert(8 != c);                  assert(8 != c);
                 p->engine.ps.last = c;                  p->engine.ps.last = '\0';
                 return;  
         } else if (8 == c) {          } else if (8 == c) {
                 assert(8 != p->engine.ps.last);                  assert(8 != p->engine.ps.last);
                   if ('_' == p->engine.ps.last) {
                           if (p->engine.ps.lastf != TERMFONT_UNDER) {
                                   ps_pclose(p);
                                   ps_setfont(p, TERMFONT_UNDER);
                           }
                   } else if (p->engine.ps.lastf != TERMFONT_BOLD) {
                           ps_pclose(p);
                           ps_setfont(p, TERMFONT_BOLD);
                   }
                 p->engine.ps.last = c;                  p->engine.ps.last = c;
                 return;                  return;
         } else {          } else {
                   if (p->engine.ps.lastf != TERMFONT_NONE) {
                           ps_pclose(p);
                           ps_setfont(p, TERMFONT_NONE);
                   }
                 cc = p->engine.ps.last;                  cc = p->engine.ps.last;
                 p->engine.ps.last = c;                  p->engine.ps.last = c;
                 c = cc;                  c = cc;
         }          }
   
         return(ps_pletter(p, c));          ps_pletter(p, c);
 }  }
   
   
 static void  static void
 ps_advance(struct termp *p, size_t len)  ps_advance(struct termp *p, size_t len)
 {  {
         size_t           i;  
   
         if ('\0' != p->engine.ps.last) {          /*
                 ps_pletter(p, p->engine.ps.last);           * Advance some spaces.  This can probably be made smarter,
                 p->engine.ps.last = '\0';           * i.e., to have multiple space-separated words in the same
         }           * scope, but this is easier:  just close out the current scope
            * and readjust our column settings.
            */
   
         if (PS_INLINE & p->engine.ps.psstate) {          ps_fclose(p);
                 assert(8 != p->engine.ps.last);  
                 if (p->engine.ps.last)  
                         ps_letter(p, p->engine.ps.last);  
                 p->engine.ps.last = '\0';  
                 for (i = 0; i < len; i++)  
                         ps_letter(p, ' ');  
                 return;  
         }  
   
         assert('\0' == p->engine.ps.last);  
         p->engine.ps.pscol += len ? len * PS_CHAR_WIDTH : 0;          p->engine.ps.pscol += len ? len * PS_CHAR_WIDTH : 0;
 }  }
   
Line 324  static void
Line 379  static void
 ps_endline(struct termp *p)  ps_endline(struct termp *p)
 {  {
   
         if ('\0' != p->engine.ps.last) {          /* Close out any scopes we have open: we're at eoln. */
                 ps_pletter(p, p->engine.ps.last);  
                 p->engine.ps.last = '\0';  
         }  
   
         if (PS_INLINE & p->engine.ps.psstate) {          ps_fclose(p);
                 assert(8 != p->engine.ps.last);  
                 if (p->engine.ps.last)  
                         ps_letter(p, p->engine.ps.last);  
                 p->engine.ps.last = '\0';  
                 ps_printf(p, ") show\n");  
                 p->engine.ps.psstate &= ~PS_INLINE;  
         } else  
                 assert('\0' == p->engine.ps.last);  
   
           /*
            * If we're in the margin, don't try to recalculate our current
            * row.  XXX: if the column tries to be fancy with multiple
            * lines, we'll do nasty stuff.
            */
   
         if (PS_MARGINS & p->engine.ps.psstate)          if (PS_MARGINS & p->engine.ps.psstate)
                 return;                  return;
   
           /*
            * Put us down a line.  If we're at the page bottom, spit out a
            * showpage and restart our row.
            */
   
         p->engine.ps.pscol = PS_CHAR_LEFT;          p->engine.ps.pscol = PS_CHAR_LEFT;
         if (p->engine.ps.psrow >= PS_CHAR_HEIGHT + PS_CHAR_BOT) {          if (p->engine.ps.psrow >= PS_CHAR_HEIGHT + PS_CHAR_BOT) {
                 p->engine.ps.psrow -= PS_CHAR_HEIGHT;                  p->engine.ps.psrow -= PS_CHAR_HEIGHT;
Line 353  ps_endline(struct termp *p)
Line 408  ps_endline(struct termp *p)
         printf("showpage\n");          printf("showpage\n");
         p->engine.ps.psrow = PS_CHAR_TOP;          p->engine.ps.psrow = PS_CHAR_TOP;
 }  }
   
   
   static void
   ps_setfont(struct termp *p, enum termfont f)
   {
   
           if (TERMFONT_BOLD == f)
                   ps_printf(p, "/Courier-Bold\n");
           else if (TERMFONT_UNDER == f)
                   ps_printf(p, "/Courier-Oblique\n");
           else
                   ps_printf(p, "/Courier\n");
   
           ps_printf(p, "10 selectfont\n");
           p->engine.ps.lastf = f;
   }
   
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