| /* |
| * Copyright (c) 2015-2020, Yann Collet, Facebook, Inc. |
| * All rights reserved. |
| * |
| * This source code is licensed under both the BSD-style license (found in the |
| * LICENSE file in the root directory of this source tree) and the GPLv2 (found |
| * in the COPYING file in the root directory of this source tree). |
| * You may select, at your option, one of the above-listed licenses. |
| */ |
| |
| |
| /*-************************************ |
| * Dependencies |
| **************************************/ |
| #include "util.h" /* Compiler options */ |
| #include <stdio.h> /* fprintf, stderr */ |
| #include "datagen.h" /* RDG_generate */ |
| |
| |
| /*-************************************ |
| * Constants |
| **************************************/ |
| #define KB *(1 <<10) |
| #define MB *(1 <<20) |
| #define GB *(1U<<30) |
| |
| #define SIZE_DEFAULT ((64 KB) + 1) |
| #define SEED_DEFAULT 0 |
| #define COMPRESSIBILITY_DEFAULT 50 |
| |
| |
| /*-************************************ |
| * Macros |
| **************************************/ |
| #define DISPLAY(...) fprintf(stderr, __VA_ARGS__) |
| #define DISPLAYLEVEL(l, ...) if (displayLevel>=l) { DISPLAY(__VA_ARGS__); } |
| static unsigned displayLevel = 2; |
| |
| |
| /*-******************************************************* |
| * Command line |
| *********************************************************/ |
| static int usage(const char* programName) |
| { |
| DISPLAY( "Compressible data generator\n"); |
| DISPLAY( "Usage :\n"); |
| DISPLAY( " %s [args]\n", programName); |
| DISPLAY( "\n"); |
| DISPLAY( "Arguments :\n"); |
| DISPLAY( " -g# : generate # data (default:%i)\n", SIZE_DEFAULT); |
| DISPLAY( " -s# : Select seed (default:%i)\n", SEED_DEFAULT); |
| DISPLAY( " -P# : Select compressibility in %% (default:%i%%)\n", |
| COMPRESSIBILITY_DEFAULT); |
| DISPLAY( " -h : display help and exit\n"); |
| return 0; |
| } |
| |
| |
| int main(int argc, const char** argv) |
| { |
| unsigned probaU32 = COMPRESSIBILITY_DEFAULT; |
| double litProba = 0.0; |
| U64 size = SIZE_DEFAULT; |
| U32 seed = SEED_DEFAULT; |
| const char* const programName = argv[0]; |
| |
| int argNb; |
| for(argNb=1; argNb<argc; argNb++) { |
| const char* argument = argv[argNb]; |
| |
| if(!argument) continue; /* Protection if argument empty */ |
| |
| /* Handle commands. Aggregated commands are allowed */ |
| if (*argument=='-') { |
| argument++; |
| while (*argument!=0) { |
| switch(*argument) |
| { |
| case 'h': |
| return usage(programName); |
| case 'g': |
| argument++; |
| size=0; |
| while ((*argument>='0') && (*argument<='9')) |
| size *= 10, size += *argument++ - '0'; |
| if (*argument=='K') { size <<= 10; argument++; } |
| if (*argument=='M') { size <<= 20; argument++; } |
| if (*argument=='G') { size <<= 30; argument++; } |
| if (*argument=='B') { argument++; } |
| break; |
| case 's': |
| argument++; |
| seed=0; |
| while ((*argument>='0') && (*argument<='9')) |
| seed *= 10, seed += *argument++ - '0'; |
| break; |
| case 'P': |
| argument++; |
| probaU32 = 0; |
| while ((*argument>='0') && (*argument<='9')) |
| probaU32 *= 10, probaU32 += *argument++ - '0'; |
| if (probaU32>100) probaU32 = 100; |
| break; |
| case 'L': /* hidden argument : Literal distribution probability */ |
| argument++; |
| litProba=0.; |
| while ((*argument>='0') && (*argument<='9')) |
| litProba *= 10, litProba += *argument++ - '0'; |
| if (litProba>100.) litProba=100.; |
| litProba /= 100.; |
| break; |
| case 'v': |
| displayLevel = 4; |
| argument++; |
| break; |
| default: |
| return usage(programName); |
| } |
| } } } /* for(argNb=1; argNb<argc; argNb++) */ |
| |
| DISPLAYLEVEL(4, "Compressible data Generator \n"); |
| if (probaU32!=COMPRESSIBILITY_DEFAULT) |
| DISPLAYLEVEL(3, "Compressibility : %i%%\n", probaU32); |
| DISPLAYLEVEL(3, "Seed = %u \n", (unsigned)seed); |
| |
| RDG_genStdout(size, (double)probaU32/100, litProba, seed); |
| DISPLAYLEVEL(1, "\n"); |
| |
| return 0; |
| } |