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11fdf7f2 | 1 | /* |
f67539c2 | 2 | * Copyright (c) 2015-2020, Yann Collet, Facebook, Inc. |
7c673cae FG |
3 | * All rights reserved. |
4 | * | |
11fdf7f2 TL |
5 | * This source code is licensed under both the BSD-style license (found in the |
6 | * LICENSE file in the root directory of this source tree) and the GPLv2 (found | |
7 | * in the COPYING file in the root directory of this source tree). | |
8 | * You may select, at your option, one of the above-listed licenses. | |
7c673cae FG |
9 | */ |
10 | ||
11 | ||
12 | /*-************************************ | |
13 | * Dependencies | |
14 | **************************************/ | |
15 | #include "util.h" /* Compiler options */ | |
16 | #include <stdio.h> /* fprintf, stderr */ | |
17 | #include "datagen.h" /* RDG_generate */ | |
18 | ||
19 | ||
20 | /*-************************************ | |
21 | * Constants | |
22 | **************************************/ | |
23 | #define KB *(1 <<10) | |
24 | #define MB *(1 <<20) | |
25 | #define GB *(1U<<30) | |
26 | ||
27 | #define SIZE_DEFAULT ((64 KB) + 1) | |
28 | #define SEED_DEFAULT 0 | |
29 | #define COMPRESSIBILITY_DEFAULT 50 | |
30 | ||
31 | ||
32 | /*-************************************ | |
33 | * Macros | |
34 | **************************************/ | |
35 | #define DISPLAY(...) fprintf(stderr, __VA_ARGS__) | |
36 | #define DISPLAYLEVEL(l, ...) if (displayLevel>=l) { DISPLAY(__VA_ARGS__); } | |
37 | static unsigned displayLevel = 2; | |
38 | ||
39 | ||
40 | /*-******************************************************* | |
41 | * Command line | |
42 | *********************************************************/ | |
43 | static int usage(const char* programName) | |
44 | { | |
45 | DISPLAY( "Compressible data generator\n"); | |
46 | DISPLAY( "Usage :\n"); | |
47 | DISPLAY( " %s [args]\n", programName); | |
48 | DISPLAY( "\n"); | |
49 | DISPLAY( "Arguments :\n"); | |
50 | DISPLAY( " -g# : generate # data (default:%i)\n", SIZE_DEFAULT); | |
51 | DISPLAY( " -s# : Select seed (default:%i)\n", SEED_DEFAULT); | |
11fdf7f2 TL |
52 | DISPLAY( " -P# : Select compressibility in %% (default:%i%%)\n", |
53 | COMPRESSIBILITY_DEFAULT); | |
7c673cae FG |
54 | DISPLAY( " -h : display help and exit\n"); |
55 | return 0; | |
56 | } | |
57 | ||
58 | ||
59 | int main(int argc, const char** argv) | |
60 | { | |
11fdf7f2 | 61 | unsigned probaU32 = COMPRESSIBILITY_DEFAULT; |
7c673cae FG |
62 | double litProba = 0.0; |
63 | U64 size = SIZE_DEFAULT; | |
64 | U32 seed = SEED_DEFAULT; | |
65 | const char* const programName = argv[0]; | |
66 | ||
67 | int argNb; | |
68 | for(argNb=1; argNb<argc; argNb++) { | |
69 | const char* argument = argv[argNb]; | |
70 | ||
71 | if(!argument) continue; /* Protection if argument empty */ | |
72 | ||
73 | /* Handle commands. Aggregated commands are allowed */ | |
74 | if (*argument=='-') { | |
75 | argument++; | |
76 | while (*argument!=0) { | |
77 | switch(*argument) | |
78 | { | |
79 | case 'h': | |
80 | return usage(programName); | |
81 | case 'g': | |
82 | argument++; | |
83 | size=0; | |
84 | while ((*argument>='0') && (*argument<='9')) | |
85 | size *= 10, size += *argument++ - '0'; | |
86 | if (*argument=='K') { size <<= 10; argument++; } | |
87 | if (*argument=='M') { size <<= 20; argument++; } | |
88 | if (*argument=='G') { size <<= 30; argument++; } | |
89 | if (*argument=='B') { argument++; } | |
90 | break; | |
91 | case 's': | |
92 | argument++; | |
93 | seed=0; | |
94 | while ((*argument>='0') && (*argument<='9')) | |
95 | seed *= 10, seed += *argument++ - '0'; | |
96 | break; | |
97 | case 'P': | |
98 | argument++; | |
11fdf7f2 | 99 | probaU32 = 0; |
7c673cae | 100 | while ((*argument>='0') && (*argument<='9')) |
11fdf7f2 TL |
101 | probaU32 *= 10, probaU32 += *argument++ - '0'; |
102 | if (probaU32>100) probaU32 = 100; | |
7c673cae FG |
103 | break; |
104 | case 'L': /* hidden argument : Literal distribution probability */ | |
105 | argument++; | |
106 | litProba=0.; | |
107 | while ((*argument>='0') && (*argument<='9')) | |
108 | litProba *= 10, litProba += *argument++ - '0'; | |
109 | if (litProba>100.) litProba=100.; | |
110 | litProba /= 100.; | |
111 | break; | |
112 | case 'v': | |
113 | displayLevel = 4; | |
114 | argument++; | |
115 | break; | |
116 | default: | |
117 | return usage(programName); | |
118 | } | |
119 | } } } /* for(argNb=1; argNb<argc; argNb++) */ | |
120 | ||
11fdf7f2 TL |
121 | DISPLAYLEVEL(4, "Compressible data Generator \n"); |
122 | if (probaU32!=COMPRESSIBILITY_DEFAULT) | |
123 | DISPLAYLEVEL(3, "Compressibility : %i%%\n", probaU32); | |
9f95a23c | 124 | DISPLAYLEVEL(3, "Seed = %u \n", (unsigned)seed); |
7c673cae | 125 | |
11fdf7f2 | 126 | RDG_genStdout(size, (double)probaU32/100, litProba, seed); |
7c673cae FG |
127 | DISPLAYLEVEL(1, "\n"); |
128 | ||
129 | return 0; | |
130 | } |