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#include <stdio.h>
#include <string.h>
#ifdef WIN32
#include <windows.h>
#else
#include <sys/stat.h>
#include <sys/types.h>
#endif
#include <zip.h>
#define BUF_SIZE 128
#ifndef MAX_PATH
#define MAX_PATH 2048
#endif
const char pathsep =
#ifdef WIN32
'\\';
#else
'/';
#endif
int makedir(const char *dir)
{
#ifdef WIN32
return mkdir(dir);
#else
return mkdir(dir, 0755);
#endif
}
void gen_full_filename(const char *basedir, const char *file, char *dest, size_t destsize)
{
int i;
#ifdef WIN32
char *fix;
#endif
if(basedir == NULL)
strncpy(dest, file, destsize);
else if(file == NULL)
strncpy(dest, basedir, destsize);
else {
if(basedir[strlen(basedir)-1] == '/' || basedir[strlen(basedir)-1] == '\\')
snprintf(dest, destsize, "%s%s", basedir, file);
else
snprintf(dest, destsize, "%s%c%s", basedir, pathsep, file);
}
#ifdef WIN32
fix = strchr(dest, '/');
while(fix != NULL) {
*fix = '\\';
fix = strchr(dest, '/');
}
#endif
}
void ensure_directory(const char *base, const char *filename)
{
char *onedir;
char *fulldir;
char *tmp;
if(filename == NULL || base == NULL) return;
if(strlen(filename) == 0) return;
onedir = (char *)malloc((strlen(filename)+1)*sizeof(char));
fulldir = (char *)malloc((strlen(filename)+strlen(base)+2)*sizeof(char));
strcpy(onedir, filename);
tmp = onedir;
tmp = strchr(onedir, pathsep);
#ifdef WIN32
if(tmp == NULL)
tmp = strchr(onedir, '/');
#endif
while(tmp != NULL) {
*tmp = '\0';
gen_full_filename(base, onedir, fulldir, (strlen(filename)+strlen(base)+2));
makedir(fulldir);
*tmp = pathsep;
tmp++;
#ifdef WIN32
if(strchr(tmp, pathsep) == NULL)
tmp = strchr(tmp, '/');
else
tmp = strchr(tmp, pathsep);
#else
tmp = strchr(tmp, pathsep);
#endif
}
free(onedir);
free(fulldir);
}
int unzip_file(const char *filename, const char *directory, const char *index_of_files_file)
{
struct zip *za;
struct zip_file *zf;
struct zip_stat sb;
char buf[BUF_SIZE];
int err, i;
size_t this_read, total_read;
char fullfile[MAX_PATH];
FILE *fp;
FILE *fp_index;
za = zip_open(filename, 0, &err);
if (za == NULL) {
return -1;
}
if(index_of_files_file != NULL)
fp_index = fopen(index_of_files_file, "w");
else
fp_index = NULL;
for(i=0; i < zip_get_num_entries(za,0); i++) {
if (zip_stat_index(za, i, 0, &sb) == 0) {
gen_full_filename(directory, sb.name, fullfile, MAX_PATH);
if(fullfile[strlen(fullfile)-1] == pathsep) {
makedir(fullfile);
} else {
ensure_directory(directory, sb.name);
zf = zip_fopen_index(za, i, 0);
fp = fopen(fullfile, "wb");
if(zf != NULL && fp != NULL) {
total_read = 0;
while(total_read < sb.size) {
this_read = zip_fread(zf, buf, BUF_SIZE);
fwrite(buf, sizeof(char), this_read, fp);
total_read += this_read;
}
if(fp_index != NULL)
fprintf(fp_index, "%s\n", fullfile);
}
if(zf != NULL)
zip_fclose(zf);
if(fp != NULL)
fclose(fp);
}
}
}
zip_close(za);
if(fp_index != NULL)
fclose(fp_index);
return 1;
}
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