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Diffstat (limited to 'tests/datagencli.c')
| -rw-r--r-- | tests/datagencli.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/tests/datagencli.c b/tests/datagencli.c new file mode 100644 index 000000000000..2f3ebc4d6863 --- /dev/null +++ b/tests/datagencli.c @@ -0,0 +1,128 @@ +/** + * Copyright (c) 2016-present, Yann Collet, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + */ + + +/*-************************************ +* 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) +{ + double proba = (double)COMPRESSIBILITY_DEFAULT / 100; + 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++; + proba=0.0; + while ((*argument>='0') && (*argument<='9')) + proba *= 10, proba += *argument++ - '0'; + if (proba>100.) proba=100.; + proba /= 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, "Data Generator \n"); + DISPLAYLEVEL(3, "Seed = %u \n", seed); + if (proba!=COMPRESSIBILITY_DEFAULT) DISPLAYLEVEL(3, "Compressibility : %i%%\n", (U32)(proba*100)); + + RDG_genStdout(size, proba, litProba, seed); + DISPLAYLEVEL(1, "\n"); + + return 0; +} |