f535537f |
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 | * Dependencies |
13 | **************************************/ |
14 | #include <stdio.h> /* fprintf, stderr */ |
15 | #include "datagen.h" /* RDG_generate */ |
16 | #include "loremOut.h" /* LOREM_genOut */ |
17 | #include "util.h" /* Compiler options */ |
18 | |
19 | /*-************************************ |
20 | * Constants |
21 | **************************************/ |
22 | #define KB *(1 << 10) |
23 | #define MB *(1 << 20) |
24 | #define GB *(1U << 30) |
25 | |
26 | #define SIZE_DEFAULT ((64 KB) + 1) |
27 | #define SEED_DEFAULT 0 |
28 | #define COMPRESSIBILITY_DEFAULT 9999 |
29 | |
30 | /*-************************************ |
31 | * Macros |
32 | **************************************/ |
33 | #define DISPLAY(...) fprintf(stderr, __VA_ARGS__) |
34 | #define DISPLAYLEVEL(l, ...) \ |
35 | if (displayLevel >= l) { \ |
36 | DISPLAY(__VA_ARGS__); \ |
37 | } |
38 | static unsigned displayLevel = 2; |
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 %% (range [0-100])\n"); |
53 | DISPLAY(" -h : display help and exit\n"); |
54 | return 0; |
55 | } |
56 | |
57 | int main(int argc, const char** argv) |
58 | { |
59 | unsigned probaU32 = COMPRESSIBILITY_DEFAULT; |
60 | double litProba = 0.0; |
61 | U64 size = SIZE_DEFAULT; |
62 | U32 seed = SEED_DEFAULT; |
63 | const char* const programName = argv[0]; |
64 | |
65 | int argNb; |
66 | for (argNb = 1; argNb < argc; argNb++) { |
67 | const char* argument = argv[argNb]; |
68 | |
69 | if (!argument) |
70 | continue; /* Protection if argument empty */ |
71 | |
72 | /* Handle commands. Aggregated commands are allowed */ |
73 | if (*argument == '-') { |
74 | argument++; |
75 | while (*argument != 0) { |
76 | switch (*argument) { |
77 | case 'h': |
78 | return usage(programName); |
79 | case 'g': |
80 | argument++; |
81 | size = 0; |
82 | while ((*argument >= '0') && (*argument <= '9')) |
83 | size *= 10, size += (U64)(*argument++ - '0'); |
84 | if (*argument == 'K') { |
85 | size <<= 10; |
86 | argument++; |
87 | } |
88 | if (*argument == 'M') { |
89 | size <<= 20; |
90 | argument++; |
91 | } |
92 | if (*argument == 'G') { |
93 | size <<= 30; |
94 | argument++; |
95 | } |
96 | if (*argument == 'B') { |
97 | argument++; |
98 | } |
99 | break; |
100 | case 's': |
101 | argument++; |
102 | seed = 0; |
103 | while ((*argument >= '0') && (*argument <= '9')) |
104 | seed *= 10, seed += (U32)(*argument++ - '0'); |
105 | break; |
106 | case 'P': |
107 | argument++; |
108 | probaU32 = 0; |
109 | while ((*argument >= '0') && (*argument <= '9')) |
110 | probaU32 *= 10, |
111 | probaU32 += (U32)(*argument++ - '0'); |
112 | if (probaU32 > 100) |
113 | probaU32 = 100; |
114 | break; |
115 | case 'L': /* hidden argument : Literal distribution |
116 | probability */ |
117 | argument++; |
118 | litProba = 0.; |
119 | while ((*argument >= '0') && (*argument <= '9')) |
120 | litProba *= 10, litProba += *argument++ - '0'; |
121 | if (litProba > 100.) |
122 | litProba = 100.; |
123 | litProba /= 100.; |
124 | break; |
125 | case 'v': |
126 | displayLevel = 4; |
127 | argument++; |
128 | break; |
129 | default: |
130 | return usage(programName); |
131 | } |
132 | } |
133 | } |
134 | } /* for(argNb=1; argNb<argc; argNb++) */ |
135 | |
136 | DISPLAYLEVEL(4, "Compressible data Generator \n"); |
137 | DISPLAYLEVEL(3, "Seed = %u \n", (unsigned)seed); |
138 | |
139 | if (probaU32 != COMPRESSIBILITY_DEFAULT) { |
140 | DISPLAYLEVEL(3, "Compressibility : %i%%\n", probaU32); |
141 | RDG_genStdout(size, (double)probaU32 / 100, litProba, seed); |
142 | } else { |
143 | LOREM_genOut(size, seed); |
144 | } |
145 | |
146 | DISPLAYLEVEL(3, "\n"); |
147 | |
148 | return 0; |
149 | } |