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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <zlib.h>
#include <string>
#define MAXFNAMELEN 150 /* pathnames need a bot more space */
#define NUMFILES 256
#define BUFPADDING 0
typedef struct filenode {
char name[MAXFNAMELEN]; // actual file name
std::string aname; // name of file in the archive
long start, size, compressed;
} filenode;
int filesize(FILE *f) {
long pos = ftell(f);
int erg;
fseek(f, 0, SEEK_END);
erg = ftell(f);
fseek(f, pos, SEEK_SET);
return erg;
}
int calcsize(filenode * files, int count) {
int sz = 0;
for (int i = 0; i < count; i++)
sz += 13 + files[i].aname.size();
printf("%i files %i headersize\n", count, sz);
return sz;
}
int main(int argc, char *argv[])
{
filenode files[NUMFILES];
int t, i, filecount = 0;
FILE *f;
FILE *outf;
unsigned char *buffer, *buffer2, *buffer3;
long erg;
long largestsize = 0;
if (argc < 2) return 1;
for (t = 2; (t < argc) && (filecount < NUMFILES); t++) {
strncpy(files[filecount].name, argv[t], MAXFNAMELEN);
files[filecount].aname = files[filecount].name;
files[filecount].aname = files[filecount].aname.substr(files[filecount].aname.rfind("/")+1);
printf("%s -> %s\n", files[filecount].name, files[filecount].aname.c_str());
f = fopen(argv[t], "rb");
if (!f)
printf("Error reading file %s!\n", argv[t]);
else {
files[filecount].size = filesize(f);
if (largestsize < (files[filecount].size + BUFPADDING))
largestsize = files[filecount].size + BUFPADDING;
filecount++;
fclose(f);
}
}
buffer = (unsigned char *)malloc(largestsize);
buffer2 = (unsigned char *)malloc(largestsize);
buffer3 = (unsigned char *)malloc(largestsize);
if (!buffer || !buffer2 || !buffer3) {
printf("Error allocating memory!\n");
return 1;
}
outf = fopen(argv[1], "wb");
if (!outf) {
printf("Error writing file %s!\n", argv[1]);
return 1;
}
fwrite(&filecount, 1, 1, outf);
fwrite(files, calcsize(files, filecount), 1, outf);
for (t = 0; t < filecount; t++) {
f = fopen(files[t].name, "rb");
files[t].size = filesize(f);
files[t].start = ftell(outf);
fread(buffer, files[t].size, 1, f);
files[t].compressed = largestsize;
compress2(buffer2, (uLongf *)&(files[t].compressed), buffer, files[t].size, 9);
erg = largestsize;
uncompress(buffer3, (uLongf *)&(erg), buffer2, files[t].compressed);
if (erg != files[t].size)
printf("Different sizes (%li <-> %li)\n", erg, files[t].size);
for (i = 0; i < files[t].size; i++)
if (buffer[i] != buffer3[i]) {
printf("Error in compression %i\n", i);
break;
}
fwrite(buffer2, files[t].compressed, 1, outf);
fclose(f);
}
rewind(outf);
fwrite(&filecount, 1, 1, outf);
for (t = 0; t < filecount; t++) {
fwrite(files[t].aname.c_str(), files[t].aname.size()+1, 1, outf);
unsigned char tmp = (files[t].start >> 0) & 0xff;
fwrite(&tmp, 1, 1, outf);
tmp = (files[t].start >> 8) & 0xff;
fwrite(&tmp, 1, 1, outf);
tmp = (files[t].start >> 16) & 0xff;
fwrite(&tmp, 1, 1, outf);
tmp = (files[t].start >> 24) & 0xff;
fwrite(&tmp, 1, 1, outf);
tmp = (files[t].size >> 0) & 0xff;
fwrite(&tmp, 1, 1, outf);
tmp = (files[t].size >> 8) & 0xff;
fwrite(&tmp, 1, 1, outf);
tmp = (files[t].size >> 16) & 0xff;
fwrite(&tmp, 1, 1, outf);
tmp = (files[t].size >> 24) & 0xff;
fwrite(&tmp, 1, 1, outf);
tmp = (files[t].compressed >> 0) & 0xff;
fwrite(&tmp, 1, 1, outf);
tmp = (files[t].compressed >> 8) & 0xff;
fwrite(&tmp, 1, 1, outf);
tmp = (files[t].compressed >> 16) & 0xff;
fwrite(&tmp, 1, 1, outf);
tmp = (files[t].compressed >> 24) & 0xff;
fwrite(&tmp, 1, 1, outf);
}
fclose(outf);
free(buffer);
free(buffer2);
free(buffer3);
return 0;
}
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