--- /dev/null
+#include "pysam.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include "glf.h"
+
+#ifdef _NO_BGZF
+// then alias bgzf_*() functions
+#endif
+
+static int glf3_is_BE = 0;
+
+static inline uint32_t bam_swap_endian_4(uint32_t v)
+{
+ v = ((v & 0x0000FFFFU) << 16) | (v >> 16);
+ return ((v & 0x00FF00FFU) << 8) | ((v & 0xFF00FF00U) >> 8);
+}
+
+static inline uint16_t bam_swap_endian_2(uint16_t v)
+{
+ return (uint16_t)(((v & 0x00FF00FFU) << 8) | ((v & 0xFF00FF00U) >> 8));
+}
+
+static inline int bam_is_big_endian()
+{
+ long one= 1;
+ return !(*((char *)(&one)));
+}
+
+glf3_header_t *glf3_header_init()
+{
+ glf3_is_BE = bam_is_big_endian();
+ return (glf3_header_t*)calloc(1, sizeof(glf3_header_t));
+}
+
+glf3_header_t *glf3_header_read(glfFile fp)
+{
+ glf3_header_t *h;
+ char magic[4];
+ h = glf3_header_init();
+ bgzf_read(fp, magic, 4);
+ if (strncmp(magic, "GLF\3", 4)) {
+ fprintf(pysamerr, "[glf3_header_read] invalid magic.\n");
+ glf3_header_destroy(h);
+ return 0;
+ }
+ bgzf_read(fp, &h->l_text, 4);
+ if (glf3_is_BE) h->l_text = bam_swap_endian_4(h->l_text);
+ if (h->l_text) {
+ h->text = (uint8_t*)calloc(h->l_text + 1, 1);
+ bgzf_read(fp, h->text, h->l_text);
+ }
+ return h;
+}
+
+void glf3_header_write(glfFile fp, const glf3_header_t *h)
+{
+ int32_t x;
+ bgzf_write(fp, "GLF\3", 4);
+ x = glf3_is_BE? bam_swap_endian_4(h->l_text) : h->l_text;
+ bgzf_write(fp, &x, 4);
+ if (h->l_text) bgzf_write(fp, h->text, h->l_text);
+}
+
+void glf3_header_destroy(glf3_header_t *h)
+{
+ free(h->text);
+ free(h);
+}
+
+char *glf3_ref_read(glfFile fp, int *len)
+{
+ int32_t n, x;
+ char *str;
+ *len = 0;
+ if (bgzf_read(fp, &n, 4) != 4) return 0;
+ if (glf3_is_BE) n = bam_swap_endian_4(n);
+ if (n < 0) {
+ fprintf(pysamerr, "[glf3_ref_read] invalid reference name length: %d.\n", n);
+ return 0;
+ }
+ str = (char*)calloc(n + 1, 1); // not necesarily n+1 in fact
+ x = bgzf_read(fp, str, n);
+ x += bgzf_read(fp, len, 4);
+ if (x != n + 4) {
+ free(str); *len = -1; return 0; // truncated
+ }
+ if (glf3_is_BE) *len = bam_swap_endian_4(*len);
+ return str;
+}
+
+void glf3_ref_write(glfFile fp, const char *str, int len)
+{
+ int32_t m, n = strlen(str) + 1;
+ m = glf3_is_BE? bam_swap_endian_4(n) : n;
+ bgzf_write(fp, &m, 4);
+ bgzf_write(fp, str, n);
+ if (glf3_is_BE) len = bam_swap_endian_4(len);
+ bgzf_write(fp, &len, 4);
+}
+
+void glf3_view1(const char *ref_name, const glf3_t *g3, int pos)
+{
+ int j;
+ if (g3->rtype == GLF3_RTYPE_END) return;
+ printf("%s\t%d\t%c\t%d\t%d\t%d", ref_name, pos + 1,
+ g3->rtype == GLF3_RTYPE_INDEL? '*' : "XACMGRSVTWYHKDBN"[g3->ref_base],
+ g3->depth, g3->rms_mapQ, g3->min_lk);
+ if (g3->rtype == GLF3_RTYPE_SUB)
+ for (j = 0; j != 10; ++j) printf("\t%d", g3->lk[j]);
+ else {
+ printf("\t%d\t%d\t%d\t%d\t%d\t%s\t%s\t", g3->lk[0], g3->lk[1], g3->lk[2], g3->indel_len[0], g3->indel_len[1],
+ g3->indel_len[0]? g3->indel_seq[0] : "*", g3->indel_len[1]? g3->indel_seq[1] : "*");
+ }
+ printf("\n");
+}
+
+int glf3_write1(glfFile fp, const glf3_t *g3)
+{
+ int r;
+ uint8_t c;
+ uint32_t y[2];
+ c = g3->rtype<<4 | g3->ref_base;
+ r = bgzf_write(fp, &c, 1);
+ if (g3->rtype == GLF3_RTYPE_END) return r;
+ y[0] = g3->offset;
+ y[1] = g3->min_lk<<24 | g3->depth;
+ if (glf3_is_BE) {
+ y[0] = bam_swap_endian_4(y[0]);
+ y[1] = bam_swap_endian_4(y[1]);
+ }
+ r += bgzf_write(fp, y, 8);
+ r += bgzf_write(fp, &g3->rms_mapQ, 1);
+ if (g3->rtype == GLF3_RTYPE_SUB) r += bgzf_write(fp, g3->lk, 10);
+ else {
+ int16_t x[2];
+ r += bgzf_write(fp, g3->lk, 3);
+ x[0] = glf3_is_BE? bam_swap_endian_2(g3->indel_len[0]) : g3->indel_len[0];
+ x[1] = glf3_is_BE? bam_swap_endian_2(g3->indel_len[1]) : g3->indel_len[1];
+ r += bgzf_write(fp, x, 4);
+ if (g3->indel_len[0]) r += bgzf_write(fp, g3->indel_seq[0], abs(g3->indel_len[0]));
+ if (g3->indel_len[1]) r += bgzf_write(fp, g3->indel_seq[1], abs(g3->indel_len[1]));
+ }
+ return r;
+}
+
+#ifndef kv_roundup32
+#define kv_roundup32(x) (--(x), (x)|=(x)>>1, (x)|=(x)>>2, (x)|=(x)>>4, (x)|=(x)>>8, (x)|=(x)>>16, ++(x))
+#endif
+
+int glf3_read1(glfFile fp, glf3_t *g3)
+{
+ int r;
+ uint8_t c;
+ uint32_t y[2];
+ r = bgzf_read(fp, &c, 1);
+ if (r == 0) return 0;
+ g3->ref_base = c & 0xf;
+ g3->rtype = c>>4;
+ if (g3->rtype == GLF3_RTYPE_END) return r;
+ r += bgzf_read(fp, y, 8);
+ if (glf3_is_BE) {
+ y[0] = bam_swap_endian_4(y[0]);
+ y[1] = bam_swap_endian_4(y[1]);
+ }
+ g3->offset = y[0];
+ g3->min_lk = y[1]>>24;
+ g3->depth = y[1]<<8>>8;
+ r += bgzf_read(fp, &g3->rms_mapQ, 1);
+ if (g3->rtype == GLF3_RTYPE_SUB) r += bgzf_read(fp, g3->lk, 10);
+ else {
+ int16_t x[2], max;
+ r += bgzf_read(fp, g3->lk, 3);
+ r += bgzf_read(fp, x, 4);
+ if (glf3_is_BE) {
+ x[0] = bam_swap_endian_2(x[0]);
+ x[1] = bam_swap_endian_2(x[1]);
+ }
+ g3->indel_len[0] = x[0];
+ g3->indel_len[1] = x[1];
+ x[0] = abs(x[0]); x[1] = abs(x[1]);
+ max = (x[0] > x[1]? x[0] : x[1]) + 1;
+ if (g3->max_len < max) {
+ g3->max_len = max;
+ kv_roundup32(g3->max_len);
+ g3->indel_seq[0] = (char*)realloc(g3->indel_seq[0], g3->max_len);
+ g3->indel_seq[1] = (char*)realloc(g3->indel_seq[1], g3->max_len);
+ }
+ r += bgzf_read(fp, g3->indel_seq[0], x[0]);
+ r += bgzf_read(fp, g3->indel_seq[1], x[1]);
+ g3->indel_seq[0][x[0]] = g3->indel_seq[1][x[1]] = 0;
+ }
+ return r;
+}
+
+void glf3_view(glfFile fp)
+{
+ glf3_header_t *h;
+ char *name;
+ glf3_t *g3;
+ int len;
+ h = glf3_header_read(fp);
+ g3 = glf3_init1();
+ while ((name = glf3_ref_read(fp, &len)) != 0) {
+ int pos = 0;
+ while (glf3_read1(fp, g3) && g3->rtype != GLF3_RTYPE_END) {
+ pos += g3->offset;
+ glf3_view1(name, g3, pos);
+ }
+ free(name);
+ }
+ glf3_header_destroy(h);
+ glf3_destroy1(g3);
+}
+
+int glf3_view_main(int argc, char *argv[])
+{
+ glfFile fp;
+ if (argc == 1) {
+ fprintf(pysamerr, "Usage: glfview <in.glf>\n");
+ return 1;
+ }
+ fp = (strcmp(argv[1], "-") == 0)? bgzf_fdopen(fileno(stdin), "r") : bgzf_open(argv[1], "r");
+ if (fp == 0) {
+ fprintf(pysamerr, "Fail to open file '%s'\n", argv[1]);
+ return 1;
+ }
+ glf3_view(fp);
+ bgzf_close(fp);
+ return 0;
+}
+
+#ifdef GLFVIEW_MAIN
+int main(int argc, char *argv[])
+{
+ return glf3_view_main(argc, argv);
+}
+#endif
projects / pysam.git / blobdiff