lib/stringbuf.c

   1 #include "stringbuf.h"
   2
   3 void sbinit(StringBuf *buf, char *c, int capacity) {
   4   buf->buf = c;
   5   buf->capacity = capacity;
   6   buf->len = 0;
   7 }
   8
   9 int sbaddchar(StringBuf *buf, char c) {
  10   if(buf->len >= buf->capacity - 1)
  11     return 0;
  12
  13   buf->buf[buf->len++] = c;
  14
  15   return 1;
  16 }
  17
  18 int sbaddstr(StringBuf *buf, char *c) {
  19   int remaining = buf->capacity - buf->len - 1;
  20   char *p;
  21
  22   for(p=c;*p;p++) {
  23     if(remaining <= 0)
  24       return 0;
  25
  26     remaining--;
  27
  28     buf->buf[buf->len++] = *p;
  29   }
  30
  31   return 1;
  32 }
  33
  34 int sbaddstrlen(StringBuf *buf, char *c, size_t len) {
  35   int remaining = buf->capacity - buf->len - 1;
  36   char *p;
  37   int i;
  38
  39   for(p=c,i=0;i<len;i++,p++) {
  40     if(remaining <= 0)
  41       return 0;
  42
  43     remaining--;
  44
  45     buf->buf[buf->len++] = *p;
  46   }
  47
  48   return 1;
  49 }
  50
  51 int sbterminate(StringBuf *buf) {
  52   if(buf->capacity - buf->len > 0) {
  53     buf->buf[buf->len] = '\0';
  54     return 1;
  55   }
  56   return 0;
  57 }