Moved compression/decompression routines to separate file
1 files added
4 files modified
| | |
| | | #------------- LIBS ---------- |
| | | |
| | | lib_LTLIBRARIES= libtrisurf.la |
| | | libtrisurf_la_SOURCES= general.c vertex.c bond.c triangle.c cell.c vesicle.c initial_distribution.c io.c frame.c energy.c timestep.c vertexmove.c bondflip.c poly.c stats.c sh.c shcomplex.c constvol.c snapshot.c restore.c cluster.c |
| | | libtrisurf_la_SOURCES= general.c vertex.c bond.c triangle.c cell.c vesicle.c initial_distribution.c io.c frame.c energy.c timestep.c vertexmove.c bondflip.c poly.c stats.c sh.c shcomplex.c constvol.c snapshot.c restore.c cluster.c b64zlib_compression.c |
| | | #libtrisurf_la_CPPFLAGS = ${libxml2_CFLAGS} |
| | | libtrisurf_la_LIBADD=${libxml2_LIBS} |
| | | pkginclude_HEADERS=general.h vertex.h bond.h triangle.h cell.h vesicle.h initial_distribution.h io.h frame.h energy.h timestep.h vertexmove.h bondflip.h poly.h stats.h sh.h shcomplex.h constvol.h snapshot.h restore.h cluster.h |
| | | pkginclude_HEADERS=general.h vertex.h bond.h triangle.h cell.h vesicle.h initial_distribution.h io.h frame.h energy.h timestep.h vertexmove.h bondflip.h poly.h stats.h sh.h shcomplex.h constvol.h snapshot.h restore.h cluster.h b64zlib_compression.h |
New file |
| | |
| | | #include<stdio.h> |
| | | #include<stdlib.h> |
| | | #include<general.h> |
| | | #include<string.h> |
| | | #include<zlib.h> |
| | | #include<inttypes.h> |
| | | #include<b64zlib_compression.h> |
| | | |
| | | |
| | | /* zlib compression base64 encoded */ |
| | | /* compressed must not be pre-malloced */ |
| | | /* taken from https://gist.github.com/arq5x/5315739 */ |
| | | /* This function is not to be used in compressing paraview data. See below. */ |
| | | ts_uint ts_compress_data(char *data, ts_uint data_len, char **compressed){ |
| | | z_stream defstream; |
| | | defstream.zalloc = Z_NULL; |
| | | defstream.zfree = Z_NULL; |
| | | defstream.opaque = Z_NULL; |
| | | defstream.avail_in = data_len+1; |
| | | defstream.next_in = (unsigned char *)data; |
| | | char *compr=(char *)malloc(data_len*sizeof(char)); |
| | | defstream.avail_out = data_len+1; |
| | | defstream.next_out = (unsigned char *)compr; |
| | | deflateInit(&defstream, 6); |
| | | // deflateInit(&defstream, Z_BEST_COMPRESSION); |
| | | deflate(&defstream, Z_FINISH); |
| | | deflateEnd(&defstream); |
| | | *compressed=compr; |
| | | return defstream.total_out; |
| | | } |
| | | |
| | | ts_uint ts_compress_string64(char *data, ts_uint data_len, char **encoded_compressed){ |
| | | size_t nbase; |
| | | char *compr; |
| | | size_t number_of_compressed_bytes=ts_compress_data(data, data_len, &compr); |
| | | *encoded_compressed=base64_encode((unsigned char *)compr,number_of_compressed_bytes,&nbase); |
| | | free(compr); |
| | | return nbase; |
| | | } |
| | | |
| | | char *ts_compress(char *data, ts_uint data_len){ |
| | | size_t nbase1, nbase2; |
| | | unsigned char *compr=(unsigned char *)malloc(data_len); |
| | | size_t number_of_compressed_bytes=data_len; |
| | | |
| | | compress(compr,&number_of_compressed_bytes, (unsigned char *)data, data_len); |
| | | // printf("Compressdion error code=%d, Z_OK=%d, Z_BUF_ERROR=%d", errcode, Z_OK, Z_BUF_ERROR); |
| | | |
| | | char *encoded_compressed=base64_encode((unsigned char *)compr,number_of_compressed_bytes,&nbase1); |
| | | |
| | | free(compr); |
| | | |
| | | ts_uint header[4]={1, data_len, data_len, number_of_compressed_bytes}; |
| | | |
| | | char *encoded_header=(char *)base64_encode((unsigned char *)header, 4*sizeof(ts_uint), &nbase2); |
| | | char *return_value=malloc((nbase1+nbase2+1)*sizeof(char)); |
| | | strncpy(return_value,encoded_header,nbase2); |
| | | strncpy(return_value+nbase2,encoded_compressed,nbase1); |
| | | *(return_value+nbase1+nbase2)=0; |
| | | |
| | | // printf("Compressed size in bytes= %ld, size of encoded header= %ld, size of encoded compressed= %ld.\n",number_of_compressed_bytes, nbase2, nbase1); |
| | | free(encoded_compressed); |
| | | free(encoded_header); |
| | | return return_value; |
| | | } |
| | | |
| | | ts_uint ts_decompress_string64(char *b64, ts_uint data_len, char **decompressed){ |
| | | return TS_SUCCESS; |
| | | |
| | | } |
| | | |
| | | /* base64 encoding, taken from http://stackoverflow.com/questions/342409/how-do-i-base64-encode-decode-in-c */ |
| | | static char encoding_table[] = {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', |
| | | 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', |
| | | 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', |
| | | 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', |
| | | 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', |
| | | 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', |
| | | 'w', 'x', 'y', 'z', '0', '1', '2', '3', |
| | | '4', '5', '6', '7', '8', '9', '+', '/'}; |
| | | static char *decoding_table = NULL; |
| | | static int mod_table[] = {0, 2, 1}; |
| | | |
| | | |
| | | char *base64_encode(const unsigned char *data, size_t input_length, size_t *output_length) { |
| | | *output_length = 4 * ((input_length + 2) / 3); |
| | | int i,j; |
| | | char *encoded_data = malloc(*output_length); |
| | | if (encoded_data == NULL) return NULL; |
| | | |
| | | for (i = 0, j = 0; i < input_length;) { |
| | | |
| | | uint32_t octet_a = i < input_length ? (unsigned char)data[i++] : 0; |
| | | uint32_t octet_b = i < input_length ? (unsigned char)data[i++] : 0; |
| | | uint32_t octet_c = i < input_length ? (unsigned char)data[i++] : 0; |
| | | uint32_t triple = (octet_a << 0x10) + (octet_b << 0x08) + octet_c; |
| | | |
| | | encoded_data[j++] = encoding_table[(triple >> 3 * 6) & 0x3F]; |
| | | encoded_data[j++] = encoding_table[(triple >> 2 * 6) & 0x3F]; |
| | | encoded_data[j++] = encoding_table[(triple >> 1 * 6) & 0x3F]; |
| | | encoded_data[j++] = encoding_table[(triple >> 0 * 6) & 0x3F]; |
| | | } |
| | | |
| | | for (i = 0; i < mod_table[input_length % 3]; i++) |
| | | encoded_data[*output_length - 1 - i] = '='; |
| | | |
| | | return encoded_data; |
| | | } |
| | | |
| | | |
| | | unsigned char *base64_decode(const char *data, size_t input_length, size_t *output_length) { |
| | | int i,j; |
| | | if (decoding_table == NULL) build_decoding_table(); |
| | | |
| | | if (input_length % 4 != 0) return NULL; |
| | | |
| | | *output_length = input_length / 4 * 3; |
| | | if (data[input_length - 1] == '=') (*output_length)--; |
| | | if (data[input_length - 2] == '=') (*output_length)--; |
| | | |
| | | unsigned char *decoded_data = malloc(*output_length); |
| | | if (decoded_data == NULL) return NULL; |
| | | |
| | | for (i = 0, j = 0; i < input_length;) { |
| | | uint32_t sextet_a = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]]; |
| | | uint32_t sextet_b = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]]; |
| | | uint32_t sextet_c = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]]; |
| | | uint32_t sextet_d = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]]; |
| | | |
| | | uint32_t triple = (sextet_a << 3 * 6) |
| | | + (sextet_b << 2 * 6) |
| | | + (sextet_c << 1 * 6) |
| | | + (sextet_d << 0 * 6); |
| | | |
| | | if (j < *output_length) decoded_data[j++] = (triple >> 2 * 8) & 0xFF; |
| | | if (j < *output_length) decoded_data[j++] = (triple >> 1 * 8) & 0xFF; |
| | | if (j < *output_length) decoded_data[j++] = (triple >> 0 * 8) & 0xFF; |
| | | } |
| | | if(decoding_table !=NULL) free(decoding_table); |
| | | return decoded_data; |
| | | } |
| | | |
| | | |
| | | void build_decoding_table() { |
| | | |
| | | decoding_table = malloc(256); |
| | | int i; |
| | | for (i = 0; i < 64; i++) |
| | | decoding_table[(unsigned char) encoding_table[i]] = i; |
| | | } |
| | | |
| | | |
| | | void base64_cleanup() { |
| | | free(decoding_table); |
| | | } |
| | | |
| | | |
| | | |
| | |
| | | #include <dirent.h> |
| | | #include <errno.h> |
| | | #include <snapshot.h> |
| | | |
| | | #include <b64zlib_compression.h> |
| | | |
| | | ts_bool parse_args(int argc, char **argv){ |
| | | int c, retval; |
| | |
| | | #include <time.h> |
| | | #include <string.h> |
| | | #include "io.h" |
| | | #include <b64zlib_compression.h> |
| | | /* a helper function that utilizes ts_string data structure and performs same as sprintf */ |
| | | ts_uint ts_sprintf(ts_string *str, char *fmt, ...){ |
| | | va_list ap; |
| | |
| | | |
| | | return TS_SUCCESS; |
| | | } |
| | | |
| | | |
| | | /* UTILITIES */ |
| | | |
| | | /* zlib compression base64 encoded */ |
| | | /* compressed must not be pre-malloced */ |
| | | /* taken from https://gist.github.com/arq5x/5315739 */ |
| | | ts_uint ts_compress_data(char *data, ts_uint data_len, char **compressed){ |
| | | z_stream defstream; |
| | | defstream.zalloc = Z_NULL; |
| | | defstream.zfree = Z_NULL; |
| | | defstream.opaque = Z_NULL; |
| | | defstream.avail_in = data_len+1; |
| | | defstream.next_in = (unsigned char *)data; |
| | | char *compr=(char *)malloc(data_len*sizeof(char)); |
| | | defstream.avail_out = data_len+1; |
| | | defstream.next_out = (unsigned char *)compr; |
| | | deflateInit(&defstream, 6); |
| | | // deflateInit(&defstream, Z_BEST_COMPRESSION); |
| | | deflate(&defstream, Z_FINISH); |
| | | deflateEnd(&defstream); |
| | | *compressed=compr; |
| | | return defstream.total_out; |
| | | } |
| | | |
| | | ts_uint ts_compress_string64(char *data, ts_uint data_len, char **encoded_compressed){ |
| | | size_t nbase; |
| | | char *compr; |
| | | size_t number_of_compressed_bytes=ts_compress_data(data, data_len, &compr); |
| | | *encoded_compressed=base64_encode((unsigned char *)compr,number_of_compressed_bytes,&nbase); |
| | | free(compr); |
| | | return nbase; |
| | | } |
| | | |
| | | char *ts_compress(char *data, ts_uint data_len){ |
| | | size_t nbase1, nbase2; |
| | | unsigned char *compr=(unsigned char *)malloc(data_len); |
| | | size_t number_of_compressed_bytes=data_len; |
| | | |
| | | compress(compr,&number_of_compressed_bytes, (unsigned char *)data, data_len); |
| | | // printf("Compressdion error code=%d, Z_OK=%d, Z_BUF_ERROR=%d", errcode, Z_OK, Z_BUF_ERROR); |
| | | |
| | | char *encoded_compressed=base64_encode((unsigned char *)compr,number_of_compressed_bytes,&nbase1); |
| | | |
| | | free(compr); |
| | | |
| | | ts_uint header[4]={1, data_len, data_len, number_of_compressed_bytes}; |
| | | |
| | | char *encoded_header=(char *)base64_encode((unsigned char *)header, 4*sizeof(ts_uint), &nbase2); |
| | | char *return_value=malloc((nbase1+nbase2+1)*sizeof(char)); |
| | | strncpy(return_value,encoded_header,nbase2); |
| | | strncpy(return_value+nbase2,encoded_compressed,nbase1); |
| | | *(return_value+nbase1+nbase2)=0; |
| | | |
| | | // printf("Compressed size in bytes= %ld, size of encoded header= %ld, size of encoded compressed= %ld.\n",number_of_compressed_bytes, nbase2, nbase1); |
| | | free(encoded_compressed); |
| | | free(encoded_header); |
| | | return return_value; |
| | | } |
| | | |
| | | ts_uint ts_decompress_string64(char *b64, ts_uint data_len, char **decompressed){ |
| | | return TS_SUCCESS; |
| | | |
| | | } |
| | | |
| | | /* base64 encoding, taken from http://stackoverflow.com/questions/342409/how-do-i-base64-encode-decode-in-c */ |
| | | static char encoding_table[] = {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', |
| | | 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', |
| | | 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', |
| | | 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', |
| | | 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', |
| | | 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', |
| | | 'w', 'x', 'y', 'z', '0', '1', '2', '3', |
| | | '4', '5', '6', '7', '8', '9', '+', '/'}; |
| | | static char *decoding_table = NULL; |
| | | static int mod_table[] = {0, 2, 1}; |
| | | |
| | | |
| | | char *base64_encode(const unsigned char *data, size_t input_length, size_t *output_length) { |
| | | *output_length = 4 * ((input_length + 2) / 3); |
| | | int i,j; |
| | | char *encoded_data = malloc(*output_length); |
| | | if (encoded_data == NULL) return NULL; |
| | | |
| | | for (i = 0, j = 0; i < input_length;) { |
| | | |
| | | uint32_t octet_a = i < input_length ? (unsigned char)data[i++] : 0; |
| | | uint32_t octet_b = i < input_length ? (unsigned char)data[i++] : 0; |
| | | uint32_t octet_c = i < input_length ? (unsigned char)data[i++] : 0; |
| | | uint32_t triple = (octet_a << 0x10) + (octet_b << 0x08) + octet_c; |
| | | |
| | | encoded_data[j++] = encoding_table[(triple >> 3 * 6) & 0x3F]; |
| | | encoded_data[j++] = encoding_table[(triple >> 2 * 6) & 0x3F]; |
| | | encoded_data[j++] = encoding_table[(triple >> 1 * 6) & 0x3F]; |
| | | encoded_data[j++] = encoding_table[(triple >> 0 * 6) & 0x3F]; |
| | | } |
| | | |
| | | for (i = 0; i < mod_table[input_length % 3]; i++) |
| | | encoded_data[*output_length - 1 - i] = '='; |
| | | |
| | | return encoded_data; |
| | | } |
| | | |
| | | |
| | | unsigned char *base64_decode(const char *data, size_t input_length, size_t *output_length) { |
| | | int i,j; |
| | | if (decoding_table == NULL) build_decoding_table(); |
| | | |
| | | if (input_length % 4 != 0) return NULL; |
| | | |
| | | *output_length = input_length / 4 * 3; |
| | | if (data[input_length - 1] == '=') (*output_length)--; |
| | | if (data[input_length - 2] == '=') (*output_length)--; |
| | | |
| | | unsigned char *decoded_data = malloc(*output_length); |
| | | if (decoded_data == NULL) return NULL; |
| | | |
| | | for (i = 0, j = 0; i < input_length;) { |
| | | uint32_t sextet_a = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]]; |
| | | uint32_t sextet_b = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]]; |
| | | uint32_t sextet_c = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]]; |
| | | uint32_t sextet_d = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]]; |
| | | |
| | | uint32_t triple = (sextet_a << 3 * 6) |
| | | + (sextet_b << 2 * 6) |
| | | + (sextet_c << 1 * 6) |
| | | + (sextet_d << 0 * 6); |
| | | |
| | | if (j < *output_length) decoded_data[j++] = (triple >> 2 * 8) & 0xFF; |
| | | if (j < *output_length) decoded_data[j++] = (triple >> 1 * 8) & 0xFF; |
| | | if (j < *output_length) decoded_data[j++] = (triple >> 0 * 8) & 0xFF; |
| | | } |
| | | if(decoding_table !=NULL) free(decoding_table); |
| | | return decoded_data; |
| | | } |
| | | |
| | | |
| | | void build_decoding_table() { |
| | | |
| | | decoding_table = malloc(256); |
| | | int i; |
| | | for (i = 0; i < 64; i++) |
| | | decoding_table[(unsigned char) encoding_table[i]] = i; |
| | | } |
| | | |
| | | |
| | | void base64_cleanup() { |
| | | free(decoding_table); |
| | | } |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | |
| | | /* vim: set ts=4 sts=4 sw=4 noet : */ |
| | | #ifndef _H_SNAPSHOT |
| | | #define _H_SNAPSHOT |
| | | |
| | | |
| | | |
| | | typedef struct{ |
| | | char *string; |
| | | ts_uint beg; |
| | | } ts_string; |
| | | |
| | | //#define COMPRESSION |
| | | |
| | | ts_bool xml_trisurf_data(FILE *fh, ts_vesicle *vesicle); |
| | | ts_bool xml_trisurf_header(FILE *fh, ts_vesicle *vesicle); |
| | | ts_bool xml_trisurf_footer(FILE *fh); |
| | |
| | | ts_bool xml_trisurf_vtx_tristar(ts_string *data, ts_vertex_list *vlist); |
| | | ts_bool xml_trisurf_nucleus(ts_string *data, ts_vesicle* vesicle); |
| | | ts_bool xml_trisurf_constvolarea(ts_string *data, ts_double volume, ts_double area); |
| | | /* UTILITIES */ |
| | | char *base64_encode(const unsigned char *data, size_t input_length, size_t *output_length); |
| | | unsigned char *base64_decode(const char *data, size_t input_length, size_t *output_length); |
| | | void build_decoding_table(); |
| | | void base64_cleanup(); |
| | | ts_uint ts_compress_string64(char *data, ts_uint data_len, char **compressed); |
| | | char *ts_compress(char *data, ts_uint data_len); |
| | | #endif |