7 const unsigned char *inbuf;
9 size_t inpos, outpos, inbuflen, outbuflen;
13 d0_iobuf_t *d0_iobuf_open_read(const void *buf, size_t len)
15 d0_iobuf_t *b = d0_malloc(sizeof(d0_iobuf_t));
16 b->inbuf = (const unsigned char *) buf;
18 b->inpos = b->outpos = 0;
25 d0_iobuf_t *d0_iobuf_open_write(void *buf, size_t len)
27 d0_iobuf_t *b = d0_malloc(sizeof(d0_iobuf_t));
28 b->inbuf = (const unsigned char *) buf;
29 b->outbuf = (unsigned char *) buf;
30 b->inpos = b->outpos = 0;
37 BOOL d0_iobuf_close(d0_iobuf_t *buf, size_t *len)
46 size_t d0_iobuf_write_raw(d0_iobuf_t *buf, const void *s, size_t n)
49 if(nreal > buf->outbuflen - buf->outpos)
52 nreal = buf->outbuflen - buf->outpos;
54 memcpy(buf->outbuf + buf->outpos, s, nreal);
59 size_t d0_iobuf_read_raw(d0_iobuf_t *buf, void *s, size_t n)
62 if(nreal > buf->inbuflen - buf->inpos)
65 nreal = buf->inbuflen - buf->inpos;
67 memcpy(s, buf->inbuf + buf->inpos, nreal);
72 BOOL d0_iobuf_write_packet(d0_iobuf_t *buf, const void *s, size_t n)
80 if(d0_iobuf_write_raw(buf, &c, 1) != 1)
84 if(d0_iobuf_write_raw(buf, &c, 1) != 1)
86 if(d0_iobuf_write_raw(buf, s, n) != n)
91 BOOL d0_iobuf_read_packet(d0_iobuf_t *buf, void *s, size_t *np)
98 if(d0_iobuf_read_raw(buf, &c, 1) != 1)
106 if(d0_iobuf_read_raw(buf, s, n) != n)
112 BOOL d0_iobuf_conv_base64_in(d0_iobuf_t *buf)
114 // compand the in-buffer
118 static const char base64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
119 static void base64_3to4(const unsigned char *in, unsigned char *out, int bytes)
121 unsigned char i0 = (bytes > 0) ? in[0] : 0;
122 unsigned char i1 = (bytes > 1) ? in[1] : 0;
123 unsigned char i2 = (bytes > 2) ? in[2] : 0;
124 unsigned char o0 = base64[i0 >> 2];
125 unsigned char o1 = base64[((i0 << 4) | (i1 >> 4)) & 077];
126 unsigned char o2 = base64[((i1 << 2) | (i2 >> 6)) & 077];
127 unsigned char o3 = base64[i2 & 077];
128 out[0] = (bytes > 0) ? o0 : '?';
129 out[1] = (bytes > 0) ? o1 : '?';
130 out[2] = (bytes > 1) ? o2 : '=';
131 out[3] = (bytes > 2) ? o3 : '=';
134 BOOL d0_iobuf_conv_base64_out(d0_iobuf_t *buf)
137 // expand the out-buffer
138 blocks = ((buf->outpos + 2) / 3);
139 if(blocks*4 > buf->outbuflen)
141 for(i = blocks; i > 0; )
144 base64_3to4(buf->outbuf + 3*i, buf->outbuf + 4*i, buf->outpos - 3*i);
146 buf->outpos = blocks * 4;