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/*******************************************************************************************
*
* Split an OVL file arriving from the standard input into 'parts' equal sized .las-files
* <align>.1.las, <align>.2.las ... or according to a current partitioning of <path>
*
* Author: Gene Myers
* Date : June 2014
*
*******************************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "DB.h"
#include "align.h"
static char *Usage = "-v <target:las> (<parts:int> | <path:db|dam>) < <source>.las";
#define MEMORY 1000 // How many megabytes for output buffer
int main(int argc, char *argv[])
{ char *iblock, *oblock;
FILE *output;
DAZZ_STUB *stub;
int64 novl, bsize, ovlsize, ptrsize;
int parts, tspace, tbytes;
char *pwd, *root, *root2;
int VERBOSE;
// Process options
{ int i, j, k;
int flags[128];
ARG_INIT("LAsplit")
j = 1;
for (i = 1; i < argc; i++)
if (argv[i][0] == '-')
{ ARG_FLAGS("v") }
else
argv[j++] = argv[i];
argc = j;
VERBOSE = flags['v'];
if (argc != 3)
{ fprintf(stderr,"Usage: %s %s\n",Prog_Name,Usage);
fprintf(stderr,"\n");
fprintf(stderr," <target> is a template that must have a single %c-sign in it\n",
BLOCK_SYMBOL);
fprintf(stderr," This symbol is replaced by numbers 1 to n = the number of parts\n");
exit (1);
}
}
{ char *eptr;
parts = strtol(argv[2],&eptr,10);
if (*eptr != '\0')
{ pwd = PathTo(argv[2]);
if (strcmp(argv[2]+(strlen(argv[2])-4),".dam") == 0)
{ root = Root(argv[2],".dam");
stub = Read_DB_Stub(Catenate(pwd,"/",root,".dam"),DB_STUB_BLOCKS);
parts = stub->nblocks;
}
else
{ root = Root(argv[2],".db");
stub = Read_DB_Stub(Catenate(pwd,"/",root,".db"),DB_STUB_BLOCKS);
parts = stub->nblocks;
}
free(pwd);
free(root);
}
else
{ stub = NULL;
if (parts <= 0)
{ fprintf(stderr,"%s: Number of parts is not positive\n",Prog_Name);
exit (1);
}
}
}
ptrsize = sizeof(void *);
ovlsize = sizeof(Overlap) - ptrsize;
bsize = MEMORY * 1000000ll;
oblock = (char *) Malloc(bsize,"Allocating output block");
iblock = (char *) Malloc(bsize + ptrsize,"Allocating input block");
if (oblock == NULL || iblock == NULL)
exit (1);
iblock += ptrsize;
pwd = PathTo(argv[1]);
root = Root(argv[1],".las");
root2 = index(root,BLOCK_SYMBOL);
if (root2 == NULL)
{ fprintf(stderr,"%s: No %c-sign in source name '%s'\n",Prog_Name,BLOCK_SYMBOL,root);
exit (1);
}
if (index(root2+1,BLOCK_SYMBOL) != NULL)
{ fprintf(stderr,"%s: Two or more occurences of %c-sign in source name '%s'\n",
Prog_Name,BLOCK_SYMBOL,root);
exit (1);
}
*root2++ = '\0';
if (fread(&novl,sizeof(int64),1,stdin) != 1)
SYSTEM_READ_ERROR
if (fread(&tspace,sizeof(int),1,stdin) != 1)
SYSTEM_READ_ERROR
if (tspace <= TRACE_XOVR && tspace != 0)
tbytes = sizeof(uint8);
else
tbytes = sizeof(uint16);
if (VERBOSE)
{ printf(" Distributing %lld la\'s\n",novl);
fflush(stdout);
}
{ int i;
Overlap *w;
int64 j, low, hgh, last;
int64 tsize, povl;
char *iptr, *itop;
char *optr, *otop;
iptr = iblock;
itop = iblock + fread(iblock,1,bsize,stdin);
hgh = 0;
for (i = 0; i < parts; i++)
{ output = Fopen(Catenate(pwd,"/",Numbered_Suffix(root,i+1,root2),".las"),"w");
if (output == NULL)
exit (1);
low = hgh;
if (stub != NULL)
{ last = stub->tblocks[i+1];
hgh = 0;
}
else
{ last = 0;
hgh = (novl*(i+1))/parts;
}
povl = 0;
fwrite(&povl,sizeof(int64),1,output);
fwrite(&tspace,sizeof(int),1,output);
optr = oblock;
otop = oblock + bsize;
for (j = low; j < novl; j++)
{ if (iptr + ovlsize > itop)
{ int64 remains = itop-iptr;
if (remains > 0)
memmove(iblock,iptr,remains);
iptr = iblock;
itop = iblock + remains;
itop += fread(itop,1,bsize-remains,stdin);
}
w = (Overlap *) (iptr-ptrsize);
if (stub == NULL)
{ if (j >= hgh && w->aread > last)
break;
last = w->aread;
}
else
{ if (w->aread >= last)
break;
}
tsize = w->path.tlen*tbytes;
if (optr + ovlsize + tsize > otop)
{ fwrite(oblock,1,optr-oblock,output);
optr = oblock;
}
memmove(optr,iptr,ovlsize);
optr += ovlsize;
iptr += ovlsize;
if (iptr + tsize > itop)
{ int64 remains = itop-iptr;
if (remains > 0)
memmove(iblock,iptr,remains);
iptr = iblock;
itop = iblock + remains;
itop += fread(itop,1,bsize-remains,stdin);
}
memmove(optr,iptr,tsize);
optr += tsize;
iptr += tsize;
}
hgh = j;
if (optr > oblock)
fwrite(oblock,1,optr-oblock,output);
rewind(output);
povl = hgh-low;
fwrite(&povl,sizeof(int64),1,output);
if (VERBOSE)
{ printf(" Split off %s: %lld la\'s\n",Numbered_Suffix(root,i+1,root2),povl);
fflush(stdout);
}
fclose(output);
}
}
free(pwd);
free(root);
Free_DB_Stub(stub);
free(iblock-ptrsize);
free(oblock);
exit (0);
}
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