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Diff for /mandoc/term_ps.c between version 1.3 and 1.4

version 1.3, 2010/06/08 15:06:01 version 1.4, 2010/06/09 08:07:13
Line 18 
Line 18 
 #include "config.h"  #include "config.h"
 #endif  #endif
   
   #include <sys/param.h>
   
 #include <assert.h>  #include <assert.h>
   #include <stdarg.h>
 #include <stdio.h>  #include <stdio.h>
 #include <stdlib.h>  #include <stdlib.h>
   #include <string.h>
   
 #include "out.h"  #include "out.h"
 #include "main.h"  #include "main.h"
Line 34 
Line 38 
 #define PS_CHAR_BOTMARG   24  #define PS_CHAR_BOTMARG   24
 #define PS_CHAR_BOT      (PS_CHAR_BOTMARG + 36)  #define PS_CHAR_BOT      (PS_CHAR_BOTMARG + 36)
   
   #define PS_BUFSLOP        128
   #define PS_GROWBUF(p, sz) \
           do if ((p)->engine.ps.psmargcur + (sz) > \
                           (p)->engine.ps.psmargsz) { \
                   (p)->engine.ps.psmargsz += /* CONSTCOND */ \
                           MAX(PS_BUFSLOP, (sz)); \
                   (p)->engine.ps.psmarg = realloc \
                           ((p)->engine.ps.psmarg,  \
                            (p)->engine.ps.psmargsz); \
                   if (NULL == (p)->engine.ps.psmarg) { \
                           perror(NULL); \
                           exit(EXIT_FAILURE); \
                   } \
           } 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_pageopen(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_printf(struct termp *, const char *, ...);
   static  void              ps_putchar(struct termp *, char);
   
   
 void *  void *
Line 63  ps_alloc(void)
Line 83  ps_alloc(void)
 void  void
 ps_free(void *arg)  ps_free(void *arg)
 {  {
           struct termp    *p;
   
         term_free((struct termp *)arg);          p = (struct termp *)arg;
   
           if (p->engine.ps.psmarg)
                   free(p->engine.ps.psmarg);
   
           term_free(p);
 }  }
   
   
   static void
   ps_printf(struct termp *p, const char *fmt, ...)
   {
           va_list          ap;
           int              pos;
   
           va_start(ap, fmt);
   
           /*
            * If we're running in regular mode, then pipe directly into
            * vprintf().  If we're processing margins, then push the data
            * into our growable margin buffer.
            */
   
           if ( ! (PS_MARGINS & p->engine.ps.psstate)) {
                   vprintf(fmt, ap);
                   va_end(ap);
                   return;
           }
   
           /*
            * XXX: I assume that the in-margin print won't exceed
            * PS_BUFSLOP (128 bytes), which is reasonable but still an
            * assumption that will cause pukeage if it's not the case.
            */
   
           PS_GROWBUF(p, PS_BUFSLOP);
   
           pos = (int)p->engine.ps.psmargcur;
           vsnprintf(&p->engine.ps.psmarg[pos], PS_BUFSLOP, fmt, ap);
           p->engine.ps.psmargcur = strlen(p->engine.ps.psmarg);
   }
   
   
   static void
   ps_putchar(struct termp *p, char c)
   {
           int              pos;
   
           /* See ps_printf(). */
   
           if ( ! (PS_MARGINS & p->engine.ps.psstate)) {
                   putchar(c);
                   return;
           }
   
           PS_GROWBUF(p, 2);
   
           pos = (int)p->engine.ps.psmargcur++;
           p->engine.ps.psmarg[pos] = c;
           p->engine.ps.psmarg[pos] = '\0';
   }
   
   
 /* ARGSUSED */  /* ARGSUSED */
 static void  static void
 ps_end(struct termp *p)  ps_end(struct termp *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
            * well as just one.
            */
   
           assert(p->engine.ps.psmarg && p->engine.ps.psmarg[0]);
           printf("%s", p->engine.ps.psmarg);
           printf("showpage\n");
         printf("%s\n", "%%EOF");          printf("%s\n", "%%EOF");
 }  }
   
Line 90  ps_begin(struct termp *p)
Line 179  ps_begin(struct termp *p)
         printf("%s\n", "/Courier");          printf("%s\n", "/Courier");
         printf("%s\n", "10 selectfont");          printf("%s\n", "10 selectfont");
   
         p->engine.ps.pspage = 1;  
         p->engine.ps.psstate = 0;          p->engine.ps.psstate = 0;
         ps_pageopen(p);  
           if (p->engine.ps.psmarg) {
                   assert(p->engine.ps.psmargsz);
                   p->engine.ps.psmarg[0] = '\0';
           }
   
           p->engine.ps.psmargcur = 0;
   
           /*
            * 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.psrow = PS_CHAR_TOPMARG;
   
           p->engine.ps.psstate |= PS_MARGINS;
   
           (*p->headf)(p, p->argf);
           (*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.psrow = PS_CHAR_BOTMARG;
           p->engine.ps.psstate |= PS_MARGINS;
   
           (*p->footf)(p, p->argf);
           (*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.psrow = PS_CHAR_TOP;
   
           assert(p->engine.ps.psmarg);
           assert('\0' != p->engine.ps.psmarg[0]);
 }  }
   
   
Line 105  ps_letter(struct termp *p, char c)
Line 232  ps_letter(struct termp *p, char c)
                  * If we're not in a PostScript "word" context, then                   * If we're not in a PostScript "word" context, then
                  * open one now at the current cursor.                   * open one now at the current cursor.
                  */                   */
                 printf("%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);
                 putchar('(');  
                 p->engine.ps.psstate |= PS_INLINE;                  p->engine.ps.psstate |= PS_INLINE;
         }          }
   
Line 125  ps_letter(struct termp *p, char c)
Line 251  ps_letter(struct termp *p, char c)
         case (')'):          case (')'):
                 /* FALLTHROUGH */                  /* FALLTHROUGH */
         case ('\\'):          case ('\\'):
                 putchar('\\');                  ps_putchar(p, '\\');
                 break;                  break;
         default:          default:
                 break;                  break;
         }          }
   
         /* Write the character and adjust where we are on the page. */          /* Write the character and adjust where we are on the page. */
         putchar(c);          ps_putchar(p, c);
         p->engine.ps.pscol += PS_CHAR_WIDTH;          p->engine.ps.pscol += PS_CHAR_WIDTH;
 }  }
   
   
 /*  
  * Open a page.  This is only used for -Tps at the moment.  It opens a  
  * page context, printing the header and the footer.  THE OUTPUT BUFFER  
  * MUST BE EMPTY.  If it is not, output will ghost on the next line and  
  * we'll be all gross and out of state.  
  */  
 static void  static void
 ps_pageopen(struct termp *p)  
 {  
   
         assert(TERMTYPE_PS == p->type);  
         assert(0 == p->engine.ps.psstate);  
   
         p->engine.ps.pscol = PS_CHAR_LEFT;  
         p->engine.ps.psrow = PS_CHAR_TOPMARG;  
         p->engine.ps.psstate |= PS_MARGINS;  
   
         (*p->headf)(p, p->argf);  
         (*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.psrow = PS_CHAR_BOTMARG;  
         p->engine.ps.psstate |= PS_MARGINS;  
   
         (*p->footf)(p, p->argf);  
         (*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.psrow = PS_CHAR_TOP;  
   
 }  
   
   
 static void  
 ps_advance(struct termp *p, size_t len)  ps_advance(struct termp *p, size_t len)
 {  {
   
         if (PS_INLINE & p->engine.ps.psstate) {          if (PS_INLINE & p->engine.ps.psstate) {
                 /* Dump out any existing line scope. */                  /* Dump out any existing line scope. */
                 printf(") show\n");                  ps_printf(p, ") show\n");
                 p->engine.ps.psstate &= ~PS_INLINE;                  p->engine.ps.psstate &= ~PS_INLINE;
         }          }
   
Line 195  ps_endline(struct termp *p)
Line 282  ps_endline(struct termp *p)
 {  {
   
         if (PS_INLINE & p->engine.ps.psstate) {          if (PS_INLINE & p->engine.ps.psstate) {
                 printf(") show\n");                  ps_printf(p, ") show\n");
                 p->engine.ps.psstate &= ~PS_INLINE;                  p->engine.ps.psstate &= ~PS_INLINE;
         }          }
   
Line 208  ps_endline(struct termp *p)
Line 295  ps_endline(struct termp *p)
                 return;                  return;
         }          }
   
         /*          assert(p->engine.ps.psmarg && p->engine.ps.psmarg[0]);
          * XXX: can't run pageopen() until we're certain a flushln() has          printf("%s", p->engine.ps.psmarg);
          * occured, else the buf will reopen in an awkward state on the  
          * next line.  
          */  
         printf("showpage\n");          printf("showpage\n");
         p->engine.ps.psrow = PS_CHAR_TOP;          p->engine.ps.psrow = PS_CHAR_TOP;
 }  }

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