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Overview
Comment:Enhance the test-delta-analyze command to show the size of the delta.
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SHA1: 138313df99a6bbf16078897a5346e45c2046ad8b
User & Date: drh 2015-12-25 15:13:53
Context
2015-12-27
18:49
For the "fossil server" command, set the HTTP_SERVER_HAD_REPOSITORY and HTTP_SERVER_HAD_CHECKOUT flags just as they would have been with the "fossil ui" command. check-in: e4e09884 user: drh tags: trunk
2015-12-25
15:13
Enhance the test-delta-analyze command to show the size of the delta. check-in: 138313df user: drh tags: trunk
14:46
Performance optimization on the delta generator. check-in: 2dd25909 user: drh tags: trunk
Changes
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Changes to src/deltacmd.c.

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** Create and a delta that carries FILE1 into FILE2.  Print the
** number bytes copied and the number of bytes inserted.
*/
void delta_analyze_cmd(void){
  Blob orig, target, delta;
  int nCopy = 0;
  int nInsert = 0;
  int sz1, sz2;
  if( g.argc!=4 ){
    usage("ORIGIN TARGET");
  }
  if( blob_read_from_file(&orig, g.argv[2])<0 ){
    fossil_fatal("cannot read %s\n", g.argv[2]);
  }
  if( blob_read_from_file(&target, g.argv[3])<0 ){
    fossil_fatal("cannot read %s\n", g.argv[3]);
  }
  blob_delta_create(&orig, &target, &delta);
  delta_analyze(blob_buffer(&delta), blob_size(&delta), &nCopy, &nInsert);
  sz1 = blob_size(&orig);
  sz2 = blob_size(&target);

  blob_reset(&orig);
  blob_reset(&target);
  blob_reset(&delta);
  fossil_print("original size:  %8d\n", sz1);
  fossil_print("bytes copied:   %8d (%.1f%% of target)\n",
               nCopy, (100.0*nCopy)/sz2);
  fossil_print("bytes inserted: %8d (%.1f%% of target)\n",
               nInsert, (100.0*nInsert)/sz2);
  fossil_print("final size:     %8d\n", sz2);

}

/*
** Apply the delta in pDelta to the original file pOriginal to generate
** the target file pTarget.  The pTarget blob is initialized by this
** routine.
**







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** Create and a delta that carries FILE1 into FILE2.  Print the
** number bytes copied and the number of bytes inserted.
*/
void delta_analyze_cmd(void){
  Blob orig, target, delta;
  int nCopy = 0;
  int nInsert = 0;
  int sz1, sz2, sz3;
  if( g.argc!=4 ){
    usage("ORIGIN TARGET");
  }
  if( blob_read_from_file(&orig, g.argv[2])<0 ){
    fossil_fatal("cannot read %s\n", g.argv[2]);
  }
  if( blob_read_from_file(&target, g.argv[3])<0 ){
    fossil_fatal("cannot read %s\n", g.argv[3]);
  }
  blob_delta_create(&orig, &target, &delta);
  delta_analyze(blob_buffer(&delta), blob_size(&delta), &nCopy, &nInsert);
  sz1 = blob_size(&orig);
  sz2 = blob_size(&target);
  sz3 = blob_size(&delta);
  blob_reset(&orig);
  blob_reset(&target);
  blob_reset(&delta);
  fossil_print("original size:  %8d\n", sz1);
  fossil_print("bytes copied:   %8d (%.1f%% of target)\n",
               nCopy, (100.0*nCopy)/sz2);
  fossil_print("bytes inserted: %8d (%.1f%% of target)\n",
               nInsert, (100.0*nInsert)/sz2);
  fossil_print("final size:     %8d\n", sz2);
  fossil_print("delta size:     %8d\n", sz3);
}

/*
** Apply the delta in pDelta to the original file pOriginal to generate
** the target file pTarget.  The pTarget blob is initialized by this
** routine.
**