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#include<stdio.h> |
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#include<general.h> |
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#include<snapshot.h> |
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#include<stdlib.h> |
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#include<stdarg.h> |
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#include <zlib.h> |
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#include<inttypes.h> |
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#include<config.h> |
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#include <time.h> |
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#include "io.h" |
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/* a helper function that utilizes ts_string data structure and performs same as sprintf */ |
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ts_uint ts_sprintf(ts_string *str, char *fmt, ...){ |
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va_list ap; |
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va_start(ap,fmt); |
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ts_uint n=vsprintf(&(str->string[str->beg]),fmt,ap); |
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va_end(ap); |
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str->beg+=n; |
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return n; |
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} |
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/* outputs additional data into paraview xml file */ |
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ts_bool xml_trisurf_data(FILE *fh, ts_vesicle *vesicle){ |
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ts_string *data=(ts_string *)malloc(sizeof(ts_sprintf)); |
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data->string=(char *)malloc(512000*sizeof(char)); /*TODO: warning, can break if the string is to long */ |
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data->beg=0; |
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xml_trisurf_header(fh, vesicle); |
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xml_trisurf_tria(data,vesicle->tlist); |
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xml_trisurf_tria_neigh(data,vesicle->tlist); |
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xml_trisurf_vtx_neigh(data,vesicle->vlist); |
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xml_trisurf_vtx_tristar(data,vesicle->vlist); |
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#ifdef COMPRESSION |
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char *compressed; |
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ts_uint nbytes=ts_compress_string64(data->string, data->beg-1, &compressed); //suppress null character at the end with by substracting 1 |
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fwrite(compressed, sizeof(unsigned char), nbytes, fh); |
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free (compressed); |
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#else |
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fprintf(fh,"%s", data->string); |
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#endif |
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free(data->string); /* TODO: valgrind is not ok with this! */ |
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free(data); |
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xml_trisurf_footer(fh); |
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return TS_SUCCESS; |
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} |
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ts_bool xml_trisurf_header(FILE *fh, ts_vesicle *vesicle){ |
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/* format current time */ |
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time_t current_time; |
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char *c_time_string; |
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current_time = time(NULL); |
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c_time_string = ctime(¤t_time); |
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int npoly, nfono; |
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fprintf(fh, "<trisurfversion>Trisurf (commit %s), compiled on %s %s</trisurfversion>\n",TS_VERSION, __DATE__, __TIME__); |
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fprintf(fh, "<dumpdate>%s</dumpdate>\n", c_time_string); |
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fprintf(fh, "<tape>\n"); |
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fprintf(fh,"%s",tapetxt); |
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fprintf(fh, "</tape>\n"); |
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if(vesicle->poly_list!=NULL){ |
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npoly=vesicle->poly_list->n; |
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if(npoly!=0){ |
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nfono=vesicle->poly_list->poly[0]->vlist->n; |
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} else { |
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nfono=0; |
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} |
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} else { |
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npoly=0; |
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nfono=0; |
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} |
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fprintf(fh, "<trisurf nvtx=\"%u\" npoly=\"%u\" nmono=\"%u\" compressed=\"false\">\n", vesicle->vlist->n, npoly, nfono); |
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return TS_SUCCESS; |
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} |
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ts_bool xml_trisurf_footer(FILE *fh){ |
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fprintf(fh, "</trisurf>\n"); |
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return TS_SUCCESS; |
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} |
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ts_bool xml_trisurf_tria(ts_string *data, ts_triangle_list *tlist){ |
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ts_uint i; |
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ts_sprintf(data,"<tria>"); |
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for(i=0; i<tlist->n;i++){ |
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ts_sprintf(data,"%u %u %u ",tlist->tria[i]->vertex[0]->idx, tlist->tria[i]->vertex[1]->idx, tlist->tria[i]->vertex[2]->idx); |
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} |
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ts_sprintf(data,"</tria>"); |
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return TS_SUCCESS; |
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} |
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ts_bool xml_trisurf_tria_neigh(ts_string *data, ts_triangle_list *tlist){ |
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ts_uint i; |
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ts_sprintf(data,"<trianeigh>\n"); |
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for(i=0; i<tlist->n;i++){ |
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ts_sprintf(data,"%u %u %u ",tlist->tria[i]->neigh[0]->idx, tlist->tria[i]->neigh[1]->idx, tlist->tria[i]->neigh[2]->idx); |
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} |
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ts_sprintf(data,"</trianeigh>\n"); |
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return TS_SUCCESS; |
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} |
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ts_bool xml_trisurf_vtx_neigh(ts_string *data, ts_vertex_list *vlist){ |
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ts_uint i,j; |
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for(i=0;i<vlist->n;i++){ |
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ts_sprintf(data,"<vtxn idx=\"%u\">",vlist->vtx[i]->idx); |
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for(j=0;j<vlist->vtx[i]->neigh_no;j++){ |
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ts_sprintf(data,"%u ",vlist->vtx[i]->neigh[j]->idx); |
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} |
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ts_sprintf(data, "</vtxn>"); |
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} |
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return TS_SUCCESS; |
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} |
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ts_bool xml_trisurf_vtx_tristar(ts_string *data, ts_vertex_list *vlist){ |
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ts_uint i,j; |
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for(i=0;i<vlist->n;i++){ |
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ts_sprintf(data,"<tristar idx=\"%u\">",vlist->vtx[i]->idx); |
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for(j=0;j<vlist->vtx[i]->tristar_no;j++){ |
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ts_sprintf(data,"%u ",vlist->vtx[i]->tristar[j]->idx); |
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} |
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ts_sprintf(data, "</tristar>"); |
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} |
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return TS_SUCCESS; |
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} |
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/* UTILITIES */ |
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/* zlib compression base64 encoded */ |
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/* compressed must not be pre-malloced */ |
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/* taken from https://gist.github.com/arq5x/5315739 */ |
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ts_uint ts_compress_string64(char *data, ts_uint data_len, char **compressed){ |
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z_stream defstream; |
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defstream.zalloc = Z_NULL; |
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defstream.zfree = Z_NULL; |
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defstream.opaque = Z_NULL; |
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defstream.avail_in = data_len+1; |
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defstream.next_in = (unsigned char *)data; |
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char *compr=(char *)malloc(data_len*sizeof(char *)); |
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defstream.avail_out = data_len+1; |
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defstream.next_out = (unsigned char *)compr; |
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deflateInit(&defstream, Z_BEST_COMPRESSION); |
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deflate(&defstream, Z_FINISH); |
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deflateEnd(&defstream); |
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/*base64 encode*/ |
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size_t nbase; |
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*compressed=base64_encode((unsigned char *)compr,(size_t)defstream.total_out,&nbase); |
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//fwrite(base64, sizeof(unsigned char), nbase, fh); |
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free(compr); |
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return nbase; |
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} |
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ts_uint ts_decompress_string64(char *b64, ts_uint data_len, char **decompressed){ |
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return TS_SUCCESS; |
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} |
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/* base64 encoding, taken from http://stackoverflow.com/questions/342409/how-do-i-base64-encode-decode-in-c */ |
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static char encoding_table[] = {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', |
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'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', |
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'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', |
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'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', |
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'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', |
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'o', 'p', 'q', 'r', 's', 't', 'u', 'v', |
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'w', 'x', 'y', 'z', '0', '1', '2', '3', |
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'4', '5', '6', '7', '8', '9', '+', '/'}; |
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static char *decoding_table = NULL; |
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static int mod_table[] = {0, 2, 1}; |
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char *base64_encode(const unsigned char *data, |
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size_t input_length, |
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size_t *output_length) { |
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*output_length = 4 * ((input_length + 2) / 3); |
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int i,j; |
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char *encoded_data = malloc(*output_length); |
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if (encoded_data == NULL) return NULL; |
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for (i = 0, j = 0; i < input_length;) { |
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uint32_t octet_a = i < input_length ? (unsigned char)data[i++] : 0; |
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uint32_t octet_b = i < input_length ? (unsigned char)data[i++] : 0; |
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uint32_t octet_c = i < input_length ? (unsigned char)data[i++] : 0; |
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uint32_t triple = (octet_a << 0x10) + (octet_b << 0x08) + octet_c; |
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encoded_data[j++] = encoding_table[(triple >> 3 * 6) & 0x3F]; |
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encoded_data[j++] = encoding_table[(triple >> 2 * 6) & 0x3F]; |
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encoded_data[j++] = encoding_table[(triple >> 1 * 6) & 0x3F]; |
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encoded_data[j++] = encoding_table[(triple >> 0 * 6) & 0x3F]; |
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} |
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for (i = 0; i < mod_table[input_length % 3]; i++) |
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encoded_data[*output_length - 1 - i] = '='; |
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return encoded_data; |
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} |
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unsigned char *base64_decode(const char *data, |
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size_t input_length, |
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size_t *output_length) { |
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int i,j; |
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if (decoding_table == NULL) build_decoding_table(); |
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if (input_length % 4 != 0) return NULL; |
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*output_length = input_length / 4 * 3; |
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if (data[input_length - 1] == '=') (*output_length)--; |
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if (data[input_length - 2] == '=') (*output_length)--; |
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unsigned char *decoded_data = malloc(*output_length); |
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if (decoded_data == NULL) return NULL; |
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for (i = 0, j = 0; i < input_length;) { |
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uint32_t sextet_a = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]]; |
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uint32_t sextet_b = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]]; |
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uint32_t sextet_c = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]]; |
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uint32_t sextet_d = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]]; |
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uint32_t triple = (sextet_a << 3 * 6) |
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+ (sextet_b << 2 * 6) |
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+ (sextet_c << 1 * 6) |
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+ (sextet_d << 0 * 6); |
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if (j < *output_length) decoded_data[j++] = (triple >> 2 * 8) & 0xFF; |
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if (j < *output_length) decoded_data[j++] = (triple >> 1 * 8) & 0xFF; |
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if (j < *output_length) decoded_data[j++] = (triple >> 0 * 8) & 0xFF; |
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} |
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if(decoding_table !=NULL) free(decoding_table); |
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return decoded_data; |
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} |
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void build_decoding_table() { |
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decoding_table = malloc(256); |
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int i; |
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for (i = 0; i < 64; i++) |
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decoding_table[(unsigned char) encoding_table[i]] = i; |
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} |
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void base64_cleanup() { |
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free(decoding_table); |
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} |
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