648db22b |
1 | /* |
2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
3 | * All rights reserved. |
4 | * |
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. |
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); |
52 | DISPLAY( " -P# : Select compressibility in %% (default:%i%%)\n", |
53 | COMPRESSIBILITY_DEFAULT); |
54 | DISPLAY( " -h : display help and exit\n"); |
55 | return 0; |
56 | } |
57 | |
58 | |
59 | int main(int argc, const char** argv) |
60 | { |
61 | unsigned probaU32 = COMPRESSIBILITY_DEFAULT; |
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++; |
99 | probaU32 = 0; |
100 | while ((*argument>='0') && (*argument<='9')) |
101 | probaU32 *= 10, probaU32 += *argument++ - '0'; |
102 | if (probaU32>100) probaU32 = 100; |
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 | |
121 | DISPLAYLEVEL(4, "Compressible data Generator \n"); |
122 | if (probaU32!=COMPRESSIBILITY_DEFAULT) |
123 | DISPLAYLEVEL(3, "Compressibility : %i%%\n", probaU32); |
124 | DISPLAYLEVEL(3, "Seed = %u \n", (unsigned)seed); |
125 | |
126 | RDG_genStdout(size, (double)probaU32/100, litProba, seed); |
127 | DISPLAYLEVEL(3, "\n"); |
128 | |
129 | return 0; |
130 | } |