275 lines
6.3 KiB
OpenEdge ABL
275 lines
6.3 KiB
OpenEdge ABL
# 1 "ringbuffer.c"
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# 1 "/home/triffid/ATmega-Skeleton/mendel//"
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# 1 "<built-in>"
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# 1 "<command-line>"
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# 1 "ringbuffer.c"
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# 1 "ringbuffer.h" 1
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# 1 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/stdint.h" 1 3
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# 121 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/stdint.h" 3
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typedef int int8_t __attribute__((__mode__(__QI__)));
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typedef unsigned int uint8_t __attribute__((__mode__(__QI__)));
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typedef int int16_t __attribute__ ((__mode__ (__HI__)));
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typedef unsigned int uint16_t __attribute__ ((__mode__ (__HI__)));
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typedef int int32_t __attribute__ ((__mode__ (__SI__)));
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typedef unsigned int uint32_t __attribute__ ((__mode__ (__SI__)));
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typedef int int64_t __attribute__((__mode__(__DI__)));
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typedef unsigned int uint64_t __attribute__((__mode__(__DI__)));
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# 142 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/stdint.h" 3
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typedef int16_t intptr_t;
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typedef uint16_t uintptr_t;
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# 159 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/stdint.h" 3
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typedef int8_t int_least8_t;
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typedef uint8_t uint_least8_t;
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typedef int16_t int_least16_t;
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typedef uint16_t uint_least16_t;
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typedef int32_t int_least32_t;
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typedef uint32_t uint_least32_t;
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typedef int64_t int_least64_t;
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typedef uint64_t uint_least64_t;
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# 213 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/stdint.h" 3
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typedef int8_t int_fast8_t;
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typedef uint8_t uint_fast8_t;
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typedef int16_t int_fast16_t;
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typedef uint16_t uint_fast16_t;
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typedef int32_t int_fast32_t;
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typedef uint32_t uint_fast32_t;
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typedef int64_t int_fast64_t;
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typedef uint64_t uint_fast64_t;
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# 273 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/stdint.h" 3
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typedef int64_t intmax_t;
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typedef uint64_t uintmax_t;
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# 5 "ringbuffer.h" 2
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# 1 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/interrupt.h" 1 3
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# 38 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/interrupt.h" 3
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# 1 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/io.h" 1 3
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# 99 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/io.h" 3
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# 1 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/sfr_defs.h" 1 3
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# 126 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/sfr_defs.h" 3
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# 1 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/inttypes.h" 1 3
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# 77 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/inttypes.h" 3
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typedef int32_t int_farptr_t;
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typedef uint32_t uint_farptr_t;
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# 127 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/sfr_defs.h" 2 3
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# 100 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/io.h" 2 3
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# 224 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/io.h" 3
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# 1 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/iom168.h" 1 3
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# 36 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/iom168.h" 3
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# 1 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/iomx8.h" 1 3
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# 37 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/iom168.h" 2 3
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# 225 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/io.h" 2 3
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# 334 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/io.h" 3
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# 1 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/portpins.h" 1 3
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# 335 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/io.h" 2 3
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# 1 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/common.h" 1 3
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# 337 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/io.h" 2 3
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# 1 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/version.h" 1 3
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# 339 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/io.h" 2 3
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# 1 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/fuse.h" 1 3
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# 234 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/fuse.h" 3
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typedef struct
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{
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unsigned char low;
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unsigned char high;
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unsigned char extended;
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} __fuse_t;
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# 342 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/io.h" 2 3
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# 1 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/lock.h" 1 3
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# 345 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/io.h" 2 3
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# 39 "/usr/lib/gcc/avr/4.4.1/../../../../avr/include/avr/interrupt.h" 2 3
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# 6 "ringbuffer.h" 2
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typedef struct {
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uint16_t read_pointer;
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uint16_t write_pointer;
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uint16_t size;
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uint8_t data[];
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} ringbuffer;
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void ringbuffer_init(ringbuffer *buf, int bufsize);
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uint16_t ringbuffer_canread(ringbuffer *buf);
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uint16_t ringbuffer_canwrite(ringbuffer *buf);
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uint8_t ringbuffer_readchar(ringbuffer *buf);
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uint8_t ringbuffer_peekchar(ringbuffer *buf, uint16_t index);
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uint16_t ringbuffer_readblock(ringbuffer *buf, uint8_t *newbuf, int size);
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void ringbuffer_writechar(ringbuffer *buf, uint8_t data);
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uint16_t ringbuffer_writeblock(ringbuffer *buf, uint8_t *data, int size);
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# 2 "ringbuffer.c" 2
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uint16_t _rb_mod(uint16_t num, uint16_t denom)
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{
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for (; num >= denom; num -= denom);
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return num;
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}
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void ringbuffer_init(ringbuffer *buf, int bufsize)
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{
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buf->read_pointer = 0;
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buf->write_pointer = 0;
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buf->size = bufsize - sizeof(ringbuffer);
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}
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uint16_t ringbuffer_canread(ringbuffer *buf)
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{
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return _rb_mod(buf->write_pointer + buf->size + buf->size - buf->read_pointer, buf->size);
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}
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uint16_t ringbuffer_canwrite(ringbuffer *buf)
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{
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return _rb_mod(buf->read_pointer + buf->size + buf->size - buf->write_pointer - 1, buf->size);
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}
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uint8_t ringbuffer_readchar(ringbuffer *buf)
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{
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uint8_t r = 0;
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if (ringbuffer_canread(buf))
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{
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r = buf->data[buf->read_pointer];
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buf->read_pointer = _rb_mod(buf->read_pointer + 1, buf->size);
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}
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return r;
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}
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void ringbuffer_writechar(ringbuffer *buf, uint8_t data)
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{
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if (ringbuffer_canwrite(buf))
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{
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buf->data[buf->write_pointer] = data;
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buf->write_pointer = _rb_mod(buf->write_pointer + 1, buf->size);
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}
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}
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uint8_t ringbuffer_peekchar(ringbuffer *buf, uint16_t index)
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{
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return buf->data[_rb_mod(buf->read_pointer + index, buf->size)];
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}
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uint16_t ringbuffer_readblock(ringbuffer *buf, uint8_t *newbuf, int size)
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{
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uint16_t nc, i;
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uint8_t *rp, *ms;
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if ((nc = ringbuffer_canread(buf)) < size)
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size = nc;
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if (size)
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{
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for (i = 0, rp = buf->data + buf->read_pointer, ms = buf->data + buf->size; i < size; i++, rp++)
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{
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if (rp >= ms)
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rp = buf->data;
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newbuf[i] = *rp;
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}
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buf->read_pointer = rp - buf->data;
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}
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return size;
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}
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uint16_t ringbuffer_writeblock(ringbuffer *buf, uint8_t *data, int size)
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{
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uint16_t nc, i;
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uint8_t *wp, *ms;
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if ((nc = ringbuffer_canwrite(buf)) < size)
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size = nc;
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if (size)
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{
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for (i = 0, wp = buf->write_pointer + buf->data, ms = buf->data + buf->size; i < size; i++, wp++)
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{
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if (wp >= ms)
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wp = buf->data;
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*wp = data[i];
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}
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buf->write_pointer = wp - buf->data;
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}
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return size;
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}
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