--- /dev/null
+#include "pysam.h"
+
+/*
+ * RAZF : Random Access compressed(Z) File
+ * Version: 1.0
+ * Release Date: 2008-10-27
+ *
+ * Copyright 2008, Jue Ruan <ruanjue@gmail.com>, Heng Li <lh3@sanger.ac.uk>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _NO_RAZF
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "razf.h"
+
+
+#if ZLIB_VERNUM < 0x1221
+struct _gz_header_s {
+ int text;
+ uLong time;
+ int xflags;
+ int os;
+ Bytef *extra;
+ uInt extra_len;
+ uInt extra_max;
+ Bytef *name;
+ uInt name_max;
+ Bytef *comment;
+ uInt comm_max;
+ int hcrc;
+ int done;
+};
+#warning "zlib < 1.2.2.1; RAZF writing is disabled."
+#endif
+
+#define DEF_MEM_LEVEL 8
+
+static inline uint32_t byte_swap_4(uint32_t v){
+ v = ((v & 0x0000FFFFU) << 16) | (v >> 16);
+ return ((v & 0x00FF00FFU) << 8) | ((v & 0xFF00FF00U) >> 8);
+}
+
+static inline uint64_t byte_swap_8(uint64_t v){
+ v = ((v & 0x00000000FFFFFFFFLLU) << 32) | (v >> 32);
+ v = ((v & 0x0000FFFF0000FFFFLLU) << 16) | ((v & 0xFFFF0000FFFF0000LLU) >> 16);
+ return ((v & 0x00FF00FF00FF00FFLLU) << 8) | ((v & 0xFF00FF00FF00FF00LLU) >> 8);
+}
+
+static inline int is_big_endian(){
+ int x = 0x01;
+ char *c = (char*)&x;
+ return (c[0] != 0x01);
+}
+
+#ifndef _RZ_READONLY
+static void add_zindex(RAZF *rz, int64_t in, int64_t out){
+ if(rz->index->size == rz->index->cap){
+ rz->index->cap = rz->index->cap * 1.5 + 2;
+ rz->index->cell_offsets = realloc(rz->index->cell_offsets, sizeof(int) * rz->index->cap);
+ rz->index->bin_offsets = realloc(rz->index->bin_offsets, sizeof(int64_t) * (rz->index->cap/RZ_BIN_SIZE + 1));
+ }
+ if(rz->index->size % RZ_BIN_SIZE == 0) rz->index->bin_offsets[rz->index->size / RZ_BIN_SIZE] = out;
+ rz->index->cell_offsets[rz->index->size] = out - rz->index->bin_offsets[rz->index->size / RZ_BIN_SIZE];
+ rz->index->size ++;
+}
+
+static void save_zindex(RAZF *rz, int fd){
+ int32_t i, v32;
+ int is_be;
+ is_be = is_big_endian();
+ if(is_be) write(fd, &rz->index->size, sizeof(int));
+ else {
+ v32 = byte_swap_4((uint32_t)rz->index->size);
+ write(fd, &v32, sizeof(uint32_t));
+ }
+ v32 = rz->index->size / RZ_BIN_SIZE + 1;
+ if(!is_be){
+ for(i=0;i<v32;i++) rz->index->bin_offsets[i] = byte_swap_8((uint64_t)rz->index->bin_offsets[i]);
+ for(i=0;i<rz->index->size;i++) rz->index->cell_offsets[i] = byte_swap_4((uint32_t)rz->index->cell_offsets[i]);
+ }
+ write(fd, rz->index->bin_offsets, sizeof(int64_t) * v32);
+ write(fd, rz->index->cell_offsets, sizeof(int32_t) * rz->index->size);
+}
+#endif
+
+#ifdef _USE_KNETFILE
+static void load_zindex(RAZF *rz, knetFile *fp){
+#else
+static void load_zindex(RAZF *rz, int fd){
+#endif
+ int32_t i, v32;
+ int is_be;
+ if(!rz->load_index) return;
+ if(rz->index == NULL) rz->index = malloc(sizeof(ZBlockIndex));
+ is_be = is_big_endian();
+#ifdef _USE_KNETFILE
+ knet_read(fp, &rz->index->size, sizeof(int));
+#else
+ read(fd, &rz->index->size, sizeof(int));
+#endif
+ if(!is_be) rz->index->size = byte_swap_4((uint32_t)rz->index->size);
+ rz->index->cap = rz->index->size;
+ v32 = rz->index->size / RZ_BIN_SIZE + 1;
+ rz->index->bin_offsets = malloc(sizeof(int64_t) * v32);
+#ifdef _USE_KNETFILE
+ knet_read(fp, rz->index->bin_offsets, sizeof(int64_t) * v32);
+#else
+ read(fd, rz->index->bin_offsets, sizeof(int64_t) * v32);
+#endif
+ rz->index->cell_offsets = malloc(sizeof(int) * rz->index->size);
+#ifdef _USE_KNETFILE
+ knet_read(fp, rz->index->cell_offsets, sizeof(int) * rz->index->size);
+#else
+ read(fd, rz->index->cell_offsets, sizeof(int) * rz->index->size);
+#endif
+ if(!is_be){
+ for(i=0;i<v32;i++) rz->index->bin_offsets[i] = byte_swap_8((uint64_t)rz->index->bin_offsets[i]);
+ for(i=0;i<rz->index->size;i++) rz->index->cell_offsets[i] = byte_swap_4((uint32_t)rz->index->cell_offsets[i]);
+ }
+}
+
+#ifdef _RZ_READONLY
+static RAZF* razf_open_w(int fd)
+{
+ fprintf(pysamerr, "[razf_open_w] Writing is not available with zlib ver < 1.2.2.1\n");
+ return 0;
+}
+#else
+static RAZF* razf_open_w(int fd){
+ RAZF *rz;
+#ifdef _WIN32
+ setmode(fd, O_BINARY);
+#endif
+ rz = calloc(1, sizeof(RAZF));
+ rz->mode = 'w';
+#ifdef _USE_KNETFILE
+ rz->x.fpw = fd;
+#else
+ rz->filedes = fd;
+#endif
+ rz->stream = calloc(sizeof(z_stream), 1);
+ rz->inbuf = malloc(RZ_BUFFER_SIZE);
+ rz->outbuf = malloc(RZ_BUFFER_SIZE);
+ rz->index = calloc(sizeof(ZBlockIndex), 1);
+ deflateInit2(rz->stream, RZ_COMPRESS_LEVEL, Z_DEFLATED, WINDOW_BITS + 16, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY);
+ rz->stream->avail_out = RZ_BUFFER_SIZE;
+ rz->stream->next_out = rz->outbuf;
+ rz->header = calloc(sizeof(gz_header), 1);
+ rz->header->os = 0x03; //Unix
+ rz->header->text = 0;
+ rz->header->time = 0;
+ rz->header->extra = malloc(7);
+ strncpy((char*)rz->header->extra, "RAZF", 4);
+ rz->header->extra[4] = 1; // obsolete field
+ // block size = RZ_BLOCK_SIZE, Big-Endian
+ rz->header->extra[5] = RZ_BLOCK_SIZE >> 8;
+ rz->header->extra[6] = RZ_BLOCK_SIZE & 0xFF;
+ rz->header->extra_len = 7;
+ rz->header->name = rz->header->comment = 0;
+ rz->header->hcrc = 0;
+ deflateSetHeader(rz->stream, rz->header);
+ rz->block_pos = rz->block_off = 0;
+ return rz;
+}
+
+static void _razf_write(RAZF* rz, const void *data, int size){
+ int tout;
+ rz->stream->avail_in = size;
+ rz->stream->next_in = (void*)data;
+ while(1){
+ tout = rz->stream->avail_out;
+ deflate(rz->stream, Z_NO_FLUSH);
+ rz->out += tout - rz->stream->avail_out;
+ if(rz->stream->avail_out) break;
+#ifdef _USE_KNETFILE
+ write(rz->x.fpw, rz->outbuf, RZ_BUFFER_SIZE - rz->stream->avail_out);
+#else
+ write(rz->filedes, rz->outbuf, RZ_BUFFER_SIZE - rz->stream->avail_out);
+#endif
+ rz->stream->avail_out = RZ_BUFFER_SIZE;
+ rz->stream->next_out = rz->outbuf;
+ if(rz->stream->avail_in == 0) break;
+ };
+ rz->in += size - rz->stream->avail_in;
+ rz->block_off += size - rz->stream->avail_in;
+}
+
+static void razf_flush(RAZF *rz){
+ uint32_t tout;
+ if(rz->buf_len){
+ _razf_write(rz, rz->inbuf, rz->buf_len);
+ rz->buf_off = rz->buf_len = 0;
+ }
+ if(rz->stream->avail_out){
+#ifdef _USE_KNETFILE
+ write(rz->x.fpw, rz->outbuf, RZ_BUFFER_SIZE - rz->stream->avail_out);
+#else
+ write(rz->filedes, rz->outbuf, RZ_BUFFER_SIZE - rz->stream->avail_out);
+#endif
+ rz->stream->avail_out = RZ_BUFFER_SIZE;
+ rz->stream->next_out = rz->outbuf;
+ }
+ while(1){
+ tout = rz->stream->avail_out;
+ deflate(rz->stream, Z_FULL_FLUSH);
+ rz->out += tout - rz->stream->avail_out;
+ if(rz->stream->avail_out == 0){
+#ifdef _USE_KNETFILE
+ write(rz->x.fpw, rz->outbuf, RZ_BUFFER_SIZE - rz->stream->avail_out);
+#else
+ write(rz->filedes, rz->outbuf, RZ_BUFFER_SIZE - rz->stream->avail_out);
+#endif
+ rz->stream->avail_out = RZ_BUFFER_SIZE;
+ rz->stream->next_out = rz->outbuf;
+ } else break;
+ }
+ rz->block_pos = rz->out;
+ rz->block_off = 0;
+}
+
+static void razf_end_flush(RAZF *rz){
+ uint32_t tout;
+ if(rz->buf_len){
+ _razf_write(rz, rz->inbuf, rz->buf_len);
+ rz->buf_off = rz->buf_len = 0;
+ }
+ while(1){
+ tout = rz->stream->avail_out;
+ deflate(rz->stream, Z_FINISH);
+ rz->out += tout - rz->stream->avail_out;
+ if(rz->stream->avail_out < RZ_BUFFER_SIZE){
+#ifdef _USE_KNETFILE
+ write(rz->x.fpw, rz->outbuf, RZ_BUFFER_SIZE - rz->stream->avail_out);
+#else
+ write(rz->filedes, rz->outbuf, RZ_BUFFER_SIZE - rz->stream->avail_out);
+#endif
+ rz->stream->avail_out = RZ_BUFFER_SIZE;
+ rz->stream->next_out = rz->outbuf;
+ } else break;
+ }
+}
+
+static void _razf_buffered_write(RAZF *rz, const void *data, int size){
+ int i, n;
+ while(1){
+ if(rz->buf_len == RZ_BUFFER_SIZE){
+ _razf_write(rz, rz->inbuf, rz->buf_len);
+ rz->buf_len = 0;
+ }
+ if(size + rz->buf_len < RZ_BUFFER_SIZE){
+ for(i=0;i<size;i++) ((char*)rz->inbuf + rz->buf_len)[i] = ((char*)data)[i];
+ rz->buf_len += size;
+ return;
+ } else {
+ n = RZ_BUFFER_SIZE - rz->buf_len;
+ for(i=0;i<n;i++) ((char*)rz->inbuf + rz->buf_len)[i] = ((char*)data)[i];
+ size -= n;
+ data += n;
+ rz->buf_len += n;
+ }
+ }
+}
+
+int razf_write(RAZF* rz, const void *data, int size){
+ int ori_size, n;
+ int64_t next_block;
+ ori_size = size;
+ next_block = ((rz->in / RZ_BLOCK_SIZE) + 1) * RZ_BLOCK_SIZE;
+ while(rz->in + rz->buf_len + size >= next_block){
+ n = next_block - rz->in - rz->buf_len;
+ _razf_buffered_write(rz, data, n);
+ data += n;
+ size -= n;
+ razf_flush(rz);
+ add_zindex(rz, rz->in, rz->out);
+ next_block = ((rz->in / RZ_BLOCK_SIZE) + 1) * RZ_BLOCK_SIZE;
+ }
+ _razf_buffered_write(rz, data, size);
+ return ori_size;
+}
+#endif
+
+/* gzip flag byte */
+#define ASCII_FLAG 0x01 /* bit 0 set: file probably ascii text */
+#define HEAD_CRC 0x02 /* bit 1 set: header CRC present */
+#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
+#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
+#define COMMENT 0x10 /* bit 4 set: file comment present */
+#define RESERVED 0xE0 /* bits 5..7: reserved */
+
+static int _read_gz_header(unsigned char *data, int size, int *extra_off, int *extra_len){
+ int method, flags, n, len;
+ if(size < 2) return 0;
+ if(data[0] != 0x1f || data[1] != 0x8b) return 0;
+ if(size < 4) return 0;
+ method = data[2];
+ flags = data[3];
+ if(method != Z_DEFLATED || (flags & RESERVED)) return 0;
+ n = 4 + 6; // Skip 6 bytes
+ *extra_off = n + 2;
+ *extra_len = 0;
+ if(flags & EXTRA_FIELD){
+ if(size < n + 2) return 0;
+ len = ((int)data[n + 1] << 8) | data[n];
+ n += 2;
+ *extra_off = n;
+ while(len){
+ if(n >= size) return 0;
+ n ++;
+ len --;
+ }
+ *extra_len = n - (*extra_off);
+ }
+ if(flags & ORIG_NAME) while(n < size && data[n++]);
+ if(flags & COMMENT) while(n < size && data[n++]);
+ if(flags & HEAD_CRC){
+ if(n + 2 > size) return 0;
+ n += 2;
+ }
+ return n;
+}
+
+#ifdef _USE_KNETFILE
+static RAZF* razf_open_r(knetFile *fp, int _load_index){
+#else
+static RAZF* razf_open_r(int fd, int _load_index){
+#endif
+ RAZF *rz;
+ int ext_off, ext_len;
+ int n, is_be, ret;
+ int64_t end;
+ unsigned char c[] = "RAZF";
+ rz = calloc(1, sizeof(RAZF));
+ rz->mode = 'r';
+#ifdef _USE_KNETFILE
+ rz->x.fpr = fp;
+#else
+#ifdef _WIN32
+ setmode(fd, O_BINARY);
+#endif
+ rz->filedes = fd;
+#endif
+ rz->stream = calloc(sizeof(z_stream), 1);
+ rz->inbuf = malloc(RZ_BUFFER_SIZE);
+ rz->outbuf = malloc(RZ_BUFFER_SIZE);
+ rz->end = rz->src_end = 0x7FFFFFFFFFFFFFFFLL;
+#ifdef _USE_KNETFILE
+ n = knet_read(rz->x.fpr, rz->inbuf, RZ_BUFFER_SIZE);
+#else
+ n = read(rz->filedes, rz->inbuf, RZ_BUFFER_SIZE);
+#endif
+ ret = _read_gz_header(rz->inbuf, n, &ext_off, &ext_len);
+ if(ret == 0){
+ PLAIN_FILE:
+ rz->in = n;
+ rz->file_type = FILE_TYPE_PLAIN;
+ memcpy(rz->outbuf, rz->inbuf, n);
+ rz->buf_len = n;
+ free(rz->stream);
+ rz->stream = NULL;
+ return rz;
+ }
+ rz->header_size = ret;
+ ret = inflateInit2(rz->stream, -WINDOW_BITS);
+ if(ret != Z_OK){ inflateEnd(rz->stream); goto PLAIN_FILE;}
+ rz->stream->avail_in = n - rz->header_size;
+ rz->stream->next_in = rz->inbuf + rz->header_size;
+ rz->stream->avail_out = RZ_BUFFER_SIZE;
+ rz->stream->next_out = rz->outbuf;
+ rz->file_type = FILE_TYPE_GZ;
+ rz->in = rz->header_size;
+ rz->block_pos = rz->header_size;
+ rz->next_block_pos = rz->header_size;
+ rz->block_off = 0;
+ if(ext_len < 7 || memcmp(rz->inbuf + ext_off, c, 4) != 0) return rz;
+ if(((((unsigned char*)rz->inbuf)[ext_off + 5] << 8) | ((unsigned char*)rz->inbuf)[ext_off + 6]) != RZ_BLOCK_SIZE){
+ fprintf(pysamerr, " -- WARNING: RZ_BLOCK_SIZE is not %d, treat source as gz file. in %s -- %s:%d --\n", RZ_BLOCK_SIZE, __FUNCTION__, __FILE__, __LINE__);
+ return rz;
+ }
+ rz->load_index = _load_index;
+ rz->file_type = FILE_TYPE_RZ;
+#ifdef _USE_KNETFILE
+ if(knet_seek(fp, -16, SEEK_END) == -1){
+#else
+ if(lseek(fd, -16, SEEK_END) == -1){
+#endif
+ UNSEEKABLE:
+ rz->seekable = 0;
+ rz->index = NULL;
+ rz->src_end = rz->end = 0x7FFFFFFFFFFFFFFFLL;
+ } else {
+ is_be = is_big_endian();
+ rz->seekable = 1;
+#ifdef _USE_KNETFILE
+ knet_read(fp, &end, sizeof(int64_t));
+#else
+ read(fd, &end, sizeof(int64_t));
+#endif
+ if(!is_be) rz->src_end = (int64_t)byte_swap_8((uint64_t)end);
+ else rz->src_end = end;
+
+#ifdef _USE_KNETFILE
+ knet_read(fp, &end, sizeof(int64_t));
+#else
+ read(fd, &end, sizeof(int64_t));
+#endif
+ if(!is_be) rz->end = (int64_t)byte_swap_8((uint64_t)end);
+ else rz->end = end;
+ if(n > rz->end){
+ rz->stream->avail_in -= n - rz->end;
+ n = rz->end;
+ }
+ if(rz->end > rz->src_end){
+#ifdef _USE_KNETFILE
+ knet_seek(fp, rz->in, SEEK_SET);
+#else
+ lseek(fd, rz->in, SEEK_SET);
+#endif
+ goto UNSEEKABLE;
+ }
+#ifdef _USE_KNETFILE
+ knet_seek(fp, rz->end, SEEK_SET);
+ if(knet_tell(fp) != rz->end){
+ knet_seek(fp, rz->in, SEEK_SET);
+#else
+ if(lseek(fd, rz->end, SEEK_SET) != rz->end){
+ lseek(fd, rz->in, SEEK_SET);
+#endif
+ goto UNSEEKABLE;
+ }
+#ifdef _USE_KNETFILE
+ load_zindex(rz, fp);
+ knet_seek(fp, n, SEEK_SET);
+#else
+ load_zindex(rz, fd);
+ lseek(fd, n, SEEK_SET);
+#endif
+ }
+ return rz;
+}
+
+#ifdef _USE_KNETFILE
+RAZF* razf_dopen(int fd, const char *mode){
+ if (strstr(mode, "r")) fprintf(pysamerr,"[razf_dopen] implement me\n");
+ else if(strstr(mode, "w")) return razf_open_w(fd);
+ return NULL;
+}
+
+RAZF* razf_dopen2(int fd, const char *mode)
+{
+ fprintf(pysamerr,"[razf_dopen2] implement me\n");
+ return NULL;
+}
+#else
+RAZF* razf_dopen(int fd, const char *mode){
+ if(strstr(mode, "r")) return razf_open_r(fd, 1);
+ else if(strstr(mode, "w")) return razf_open_w(fd);
+ else return NULL;
+}
+
+RAZF* razf_dopen2(int fd, const char *mode)
+{
+ if(strstr(mode, "r")) return razf_open_r(fd, 0);
+ else if(strstr(mode, "w")) return razf_open_w(fd);
+ else return NULL;
+}
+#endif
+
+static inline RAZF* _razf_open(const char *filename, const char *mode, int _load_index){
+ int fd;
+ RAZF *rz;
+ if(strstr(mode, "r")){
+#ifdef _USE_KNETFILE
+ knetFile *fd = knet_open(filename, "r");
+ if (fd == 0) {
+ fprintf(pysamerr, "[_razf_open] fail to open %s\n", filename);
+ return NULL;
+ }
+#else
+#ifdef _WIN32
+ fd = open(filename, O_RDONLY | O_BINARY);
+#else
+ fd = open(filename, O_RDONLY);
+#endif
+#endif
+ if(fd < 0) return NULL;
+ rz = razf_open_r(fd, _load_index);
+ } else if(strstr(mode, "w")){
+#ifdef _WIN32
+ fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0666);
+#else
+ fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666);
+#endif
+ if(fd < 0) return NULL;
+ rz = razf_open_w(fd);
+ } else return NULL;
+ return rz;
+}
+
+RAZF* razf_open(const char *filename, const char *mode){
+ return _razf_open(filename, mode, 1);
+}
+
+RAZF* razf_open2(const char *filename, const char *mode){
+ return _razf_open(filename, mode, 0);
+}
+
+int razf_get_data_size(RAZF *rz, int64_t *u_size, int64_t *c_size){
+ int64_t n;
+ if(rz->mode != 'r' && rz->mode != 'R') return 0;
+ switch(rz->file_type){
+ case FILE_TYPE_PLAIN:
+ if(rz->end == 0x7fffffffffffffffLL){
+#ifdef _USE_KNETFILE
+ if(knet_seek(rz->x.fpr, 0, SEEK_CUR) == -1) return 0;
+ n = knet_tell(rz->x.fpr);
+ knet_seek(rz->x.fpr, 0, SEEK_END);
+ rz->end = knet_tell(rz->x.fpr);
+ knet_seek(rz->x.fpr, n, SEEK_SET);
+#else
+ if((n = lseek(rz->filedes, 0, SEEK_CUR)) == -1) return 0;
+ rz->end = lseek(rz->filedes, 0, SEEK_END);
+ lseek(rz->filedes, n, SEEK_SET);
+#endif
+ }
+ *u_size = *c_size = rz->end;
+ return 1;
+ case FILE_TYPE_GZ:
+ return 0;
+ case FILE_TYPE_RZ:
+ if(rz->src_end == rz->end) return 0;
+ *u_size = rz->src_end;
+ *c_size = rz->end;
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static int _razf_read(RAZF* rz, void *data, int size){
+ int ret, tin;
+ if(rz->z_eof || rz->z_err) return 0;
+ if (rz->file_type == FILE_TYPE_PLAIN) {
+#ifdef _USE_KNETFILE
+ ret = knet_read(rz->x.fpr, data, size);
+#else
+ ret = read(rz->filedes, data, size);
+#endif
+ if (ret == 0) rz->z_eof = 1;
+ return ret;
+ }
+ rz->stream->avail_out = size;
+ rz->stream->next_out = data;
+ while(rz->stream->avail_out){
+ if(rz->stream->avail_in == 0){
+ if(rz->in >= rz->end){ rz->z_eof = 1; break; }
+ if(rz->end - rz->in < RZ_BUFFER_SIZE){
+#ifdef _USE_KNETFILE
+ rz->stream->avail_in = knet_read(rz->x.fpr, rz->inbuf, rz->end -rz->in);
+#else
+ rz->stream->avail_in = read(rz->filedes, rz->inbuf, rz->end -rz->in);
+#endif
+ } else {
+#ifdef _USE_KNETFILE
+ rz->stream->avail_in = knet_read(rz->x.fpr, rz->inbuf, RZ_BUFFER_SIZE);
+#else
+ rz->stream->avail_in = read(rz->filedes, rz->inbuf, RZ_BUFFER_SIZE);
+#endif
+ }
+ if(rz->stream->avail_in == 0){
+ rz->z_eof = 1;
+ break;
+ }
+ rz->stream->next_in = rz->inbuf;
+ }
+ tin = rz->stream->avail_in;
+ ret = inflate(rz->stream, Z_BLOCK);
+ rz->in += tin - rz->stream->avail_in;
+ if(ret == Z_NEED_DICT || ret == Z_MEM_ERROR || ret == Z_DATA_ERROR){
+ fprintf(pysamerr, "[_razf_read] inflate error: %d %s (at %s:%d)\n", ret, rz->stream->msg ? rz->stream->msg : "", __FILE__, __LINE__);
+ rz->z_err = 1;
+ break;
+ }
+ if(ret == Z_STREAM_END){
+ rz->z_eof = 1;
+ break;
+ }
+ if ((rz->stream->data_type&128) && !(rz->stream->data_type&64)){
+ rz->buf_flush = 1;
+ rz->next_block_pos = rz->in;
+ break;
+ }
+ }
+ return size - rz->stream->avail_out;
+}
+
+int razf_read(RAZF *rz, void *data, int size){
+ int ori_size, i;
+ ori_size = size;
+ while(size > 0){
+ if(rz->buf_len){
+ if(size < rz->buf_len){
+ for(i=0;i<size;i++) ((char*)data)[i] = ((char*)rz->outbuf + rz->buf_off)[i];
+ rz->buf_off += size;
+ rz->buf_len -= size;
+ data += size;
+ rz->block_off += size;
+ size = 0;
+ break;
+ } else {
+ for(i=0;i<rz->buf_len;i++) ((char*)data)[i] = ((char*)rz->outbuf + rz->buf_off)[i];
+ data += rz->buf_len;
+ size -= rz->buf_len;
+ rz->block_off += rz->buf_len;
+ rz->buf_off = 0;
+ rz->buf_len = 0;
+ if(rz->buf_flush){
+ rz->block_pos = rz->next_block_pos;
+ rz->block_off = 0;
+ rz->buf_flush = 0;
+ }
+ }
+ } else if(rz->buf_flush){
+ rz->block_pos = rz->next_block_pos;
+ rz->block_off = 0;
+ rz->buf_flush = 0;
+ }
+ if(rz->buf_flush) continue;
+ rz->buf_len = _razf_read(rz, rz->outbuf, RZ_BUFFER_SIZE);
+ if(rz->z_eof && rz->buf_len == 0) break;
+ }
+ rz->out += ori_size - size;
+ return ori_size - size;
+}
+
+int razf_skip(RAZF* rz, int size){
+ int ori_size;
+ ori_size = size;
+ while(size > 0){
+ if(rz->buf_len){
+ if(size < rz->buf_len){
+ rz->buf_off += size;
+ rz->buf_len -= size;
+ rz->block_off += size;
+ size = 0;
+ break;
+ } else {
+ size -= rz->buf_len;
+ rz->buf_off = 0;
+ rz->buf_len = 0;
+ rz->block_off += rz->buf_len;
+ if(rz->buf_flush){
+ rz->block_pos = rz->next_block_pos;
+ rz->block_off = 0;
+ rz->buf_flush = 0;
+ }
+ }
+ } else if(rz->buf_flush){
+ rz->block_pos = rz->next_block_pos;
+ rz->block_off = 0;
+ rz->buf_flush = 0;
+ }
+ if(rz->buf_flush) continue;
+ rz->buf_len = _razf_read(rz, rz->outbuf, RZ_BUFFER_SIZE);
+ if(rz->z_eof || rz->z_err) break;
+ }
+ rz->out += ori_size - size;
+ return ori_size - size;
+}
+
+static void _razf_reset_read(RAZF *rz, int64_t in, int64_t out){
+#ifdef _USE_KNETFILE
+ knet_seek(rz->x.fpr, in, SEEK_SET);
+#else
+ lseek(rz->filedes, in, SEEK_SET);
+#endif
+ rz->in = in;
+ rz->out = out;
+ rz->block_pos = in;
+ rz->next_block_pos = in;
+ rz->block_off = 0;
+ rz->buf_flush = 0;
+ rz->z_eof = rz->z_err = 0;
+ inflateReset(rz->stream);
+ rz->stream->avail_in = 0;
+ rz->buf_off = rz->buf_len = 0;
+}
+
+int64_t razf_jump(RAZF *rz, int64_t block_start, int block_offset){
+ int64_t pos;
+ rz->z_eof = 0;
+ if(rz->file_type == FILE_TYPE_PLAIN){
+ rz->buf_off = rz->buf_len = 0;
+ pos = block_start + block_offset;
+#ifdef _USE_KNETFILE
+ knet_seek(rz->x.fpr, pos, SEEK_SET);
+ pos = knet_tell(rz->x.fpr);
+#else
+ pos = lseek(rz->filedes, pos, SEEK_SET);
+#endif
+ rz->out = rz->in = pos;
+ return pos;
+ }
+ if(block_start == rz->block_pos && block_offset >= rz->block_off) {
+ block_offset -= rz->block_off;
+ goto SKIP; // Needn't reset inflate
+ }
+ if(block_start == 0) block_start = rz->header_size; // Automaticly revist wrong block_start
+ _razf_reset_read(rz, block_start, 0);
+ SKIP:
+ if(block_offset) razf_skip(rz, block_offset);
+ return rz->block_off;
+}
+
+int64_t razf_seek(RAZF* rz, int64_t pos, int where){
+ int64_t idx;
+ int64_t seek_pos, new_out;
+ rz->z_eof = 0;
+ if (where == SEEK_CUR) pos += rz->out;
+ else if (where == SEEK_END) pos += rz->src_end;
+ if(rz->file_type == FILE_TYPE_PLAIN){
+#ifdef _USE_KNETFILE
+ knet_seek(rz->x.fpr, pos, SEEK_SET);
+ seek_pos = knet_tell(rz->x.fpr);
+#else
+ seek_pos = lseek(rz->filedes, pos, SEEK_SET);
+#endif
+ rz->buf_off = rz->buf_len = 0;
+ rz->out = rz->in = seek_pos;
+ return seek_pos;
+ } else if(rz->file_type == FILE_TYPE_GZ){
+ if(pos >= rz->out) goto SKIP;
+ return rz->out;
+ }
+ if(pos == rz->out) return pos;
+ if(pos > rz->src_end) return rz->out;
+ if(!rz->seekable || !rz->load_index){
+ if(pos >= rz->out) goto SKIP;
+ }
+ idx = pos / RZ_BLOCK_SIZE - 1;
+ seek_pos = (idx < 0)? rz->header_size:(rz->index->cell_offsets[idx] + rz->index->bin_offsets[idx / RZ_BIN_SIZE]);
+ new_out = (idx + 1) * RZ_BLOCK_SIZE;
+ if(pos > rz->out && new_out <= rz->out) goto SKIP;
+ _razf_reset_read(rz, seek_pos, new_out);
+ SKIP:
+ razf_skip(rz, (int)(pos - rz->out));
+ return rz->out;
+}
+
+uint64_t razf_tell2(RAZF *rz)
+{
+ /*
+ if (rz->load_index) {
+ int64_t idx, seek_pos;
+ idx = rz->out / RZ_BLOCK_SIZE - 1;
+ seek_pos = (idx < 0)? rz->header_size:(rz->index->cell_offsets[idx] + rz->index->bin_offsets[idx / RZ_BIN_SIZE]);
+ if (seek_pos != rz->block_pos || rz->out%RZ_BLOCK_SIZE != rz->block_off)
+ fprintf(pysamerr, "[razf_tell2] inconsistent block offset: (%lld, %lld) != (%lld, %lld)\n",
+ (long long)seek_pos, (long long)rz->out%RZ_BLOCK_SIZE, (long long)rz->block_pos, (long long) rz->block_off);
+ }
+ */
+ return (uint64_t)rz->block_pos<<16 | (rz->block_off&0xffff);
+}
+
+int64_t razf_seek2(RAZF *rz, uint64_t voffset, int where)
+{
+ if (where != SEEK_SET) return -1;
+ return razf_jump(rz, voffset>>16, voffset&0xffff);
+}
+
+void razf_close(RAZF *rz){
+ if(rz->mode == 'w'){
+#ifndef _RZ_READONLY
+ razf_end_flush(rz);
+ deflateEnd(rz->stream);
+#ifdef _USE_KNETFILE
+ save_zindex(rz, rz->x.fpw);
+ if(is_big_endian()){
+ write(rz->x.fpw, &rz->in, sizeof(int64_t));
+ write(rz->x.fpw, &rz->out, sizeof(int64_t));
+ } else {
+ uint64_t v64 = byte_swap_8((uint64_t)rz->in);
+ write(rz->x.fpw, &v64, sizeof(int64_t));
+ v64 = byte_swap_8((uint64_t)rz->out);
+ write(rz->x.fpw, &v64, sizeof(int64_t));
+ }
+#else
+ save_zindex(rz, rz->filedes);
+ if(is_big_endian()){
+ write(rz->filedes, &rz->in, sizeof(int64_t));
+ write(rz->filedes, &rz->out, sizeof(int64_t));
+ } else {
+ uint64_t v64 = byte_swap_8((uint64_t)rz->in);
+ write(rz->filedes, &v64, sizeof(int64_t));
+ v64 = byte_swap_8((uint64_t)rz->out);
+ write(rz->filedes, &v64, sizeof(int64_t));
+ }
+#endif
+#endif
+ } else if(rz->mode == 'r'){
+ if(rz->stream) inflateEnd(rz->stream);
+ }
+ if(rz->inbuf) free(rz->inbuf);
+ if(rz->outbuf) free(rz->outbuf);
+ if(rz->header){
+ free(rz->header->extra);
+ free(rz->header->name);
+ free(rz->header->comment);
+ free(rz->header);
+ }
+ if(rz->index){
+ free(rz->index->bin_offsets);
+ free(rz->index->cell_offsets);
+ free(rz->index);
+ }
+ free(rz->stream);
+#ifdef _USE_KNETFILE
+ if (rz->mode == 'r')
+ knet_close(rz->x.fpr);
+ if (rz->mode == 'w')
+ close(rz->x.fpw);
+#else
+ close(rz->filedes);
+#endif
+ free(rz);
+}
+
+#endif
projects / pysam.git / blobdiff