libkcc/buffer.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <sys/types.h>
   4
   5 #include "kcc.h"
   6 #include "libkcc.h"
   7
   8 /**********************************************************************
   9  *                                                                    *
  10  *  Hold Buffer Operations                                            *
  11  *                                                                    *
  12  **********************************************************************/
  13 char *holdbuf, *bufend;
  14 char *bufp;
  15
  16 /*---------------------------------------------------------------------
  17     NAME
  18         buffalloc
  19  ---------------------------------------------------------------------*/
  20 char *Kcc_buffalloc(len)
  21     unsigned len;
  22 {
  23     if ((bufp = holdbuf = (char *) malloc(len)) == NULL)
  24       return NULL;
  25     bufend = holdbuf + len;
  26     return bufend;
  27 }
  28
  29 /*---------------------------------------------------------------------
  30     NAME
  31         append
  32  ---------------------------------------------------------------------*/
  33 bool Kcc_append(s, len)
  34     register char *s;
  35     register int len;
  36 {
  37     if (bufp + len > bufend)
  38         return (0);
  39     for (; len; --len)
  40         *bufp++ = *(u_char *) s++;
  41     return (1);
  42 }
  43
  44 /*---------------------------------------------------------------------
  45     NAME
  46         flush
  47  ---------------------------------------------------------------------*/
  48 void Kcc_flush(code, ddd, outcode, inmode, insi, inso, innj, ingj)
  49     unsigned code;
  50     char **ddd;
  51     enum mode *inmode;
  52     unsigned long *insi, *inso, *innj, *ingj;
  53     unsigned outcode;
  54 {
  55     unsigned out();
  56
  57     Kcc_out(ddd, holdbuf, bufp - holdbuf, code, outcode, inmode, insi, inso, innj, ingj);
  58     bufp = holdbuf;
  59 }
  60
  61 /*---------------------------------------------------------------------
  62     NAME
  63         bufffree
  64  ---------------------------------------------------------------------*/
  65 void Kcc_bufffree(void)
  66 {
  67     if (holdbuf) {
  68         free(holdbuf);
  69         holdbuf = NULL;
  70     }
  71 }