OpenJPH Open-source implementation of JPEG2000 Part-15

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ojph_arg.h
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1//***************************************************************************/
2// This software is released under the 2-Clause BSD license, included
3// below.
4//
5// Copyright (c) 2019, Aous Naman
6// Copyright (c) 2019, Kakadu Software Pty Ltd, Australia
7// Copyright (c) 2019, The University of New South Wales, Australia
8//
9// Redistribution and use in source and binary forms, with or without
10// modification, are permitted provided that the following conditions are
11// met:
12//
13// 1. Redistributions of source code must retain the above copyright
14// notice, this list of conditions and the following disclaimer.
15//
16// 2. Redistributions in binary form must reproduce the above copyright
17// notice, this list of conditions and the following disclaimer in the
18// documentation and/or other materials provided with the distribution.
19//
20// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
21// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
23// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
26// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31//***************************************************************************/
32// This file is part of the OpenJPH software implementation.
33// File: ojph_arg.h
34// Author: Aous Naman
35// Date: 28 August 2019
36//***************************************************************************/
37
38
39#ifndef OJPH_ARG_H
40#define OJPH_ARG_H
41
42#include <cstdlib>
43#include <cassert>
44#include <cstring>
45
46#include "ojph_defs.h"
47
48 namespace ojph {
49
51 //
53 class argument {
54 friend class cli_interpreter;
55 public:
56 argument() : arg(NULL), index(0) {}
57 char *arg;
58 bool is_valid() { return (arg != NULL); }
59 private:
60 int index;
61 };
62
64 //
66 class cli_interpreter {
67 public:
68 cli_interpreter() : argv(NULL), argc(0), avail(avail_store) { }
69 ~cli_interpreter()
70 { if (avail != avail_store) delete[] avail; }
71
73 void init(int argc, char *argv[]) {
74 assert(avail == avail_store);
75 if (argc > 128)
76 avail = new ui8[((ui32)argc + 7u) >> 3];
77 memset(avail, 0,
78 ojph_max(sizeof(avail_store), (size_t)((argc + 7) >> 3)));
79 this->argv = argv;
80 this->argc = argc;
81 for (int i = 0; i < argc; ++i)
82 avail[i >> 3] = (ui8)(avail[i >> 3] | (ui8)(1 << (i & 7)));
83 }
84
86 argument get_next_value(const argument& current) {
87 argument t;
88 int idx = current.index + 1;
89 if (idx < argc && (avail[idx >> 3] & (1 << (idx & 0x7)))) {
90 t.arg = argv[idx];
91 t.index = idx;
92 }
93 return t;
94 }
95
97 argument find_argument(const char *str) {
98 argument t;
99 for (int index = 1; index < argc; ++index)
100 if (avail[index >> 3] & (1 << (index & 0x7)))
101 if (strcmp(str, argv[index]) == 0) {
102 t.arg = argv[index];
103 t.index = index;
104 return t;
105 }
106 return t;
107 }
108
110 void release_argument(const argument& arg) {
111 if (arg.index != 0) {
112 assert(arg.index < argc);
113 avail[arg.index >> 3] &= (ui8)(~(1 << (arg.index & 0x7)));
114 }
115 }
116
118 bool is_exhausted() {
119 for (int i = 1; i < argc; ++i)
120 if (avail[i >> 3] & (1 << (i & 0x7)))
121 return false;
122 return true;
123 }
124
126 argument get_argument_zero() {
127 argument t;
128 t.arg = argv[0];
129 return t;
130 }
131
133 argument get_next_avail_argument(const argument& arg) {
134 argument t;
135 int idx = arg.index + 1;
136 while (idx < argc && (avail[idx >> 3] & (1 << (idx & 0x7))) == 0)
137 ++idx;
138 if (idx < argc) {
139 t.arg = argv[idx];
140 t.index = idx;
141 }
142 return t;
143 }
144
146 void reinterpret(const char *str, int& val) {
147 argument t = find_argument(str);
148 if (t.is_valid()) {
149 argument t2 = get_next_value(t);
150 if (t2.is_valid()) {
151 val = atoi(t2.arg);
152 release_argument(t);
153 release_argument(t2);
154 }
155 }
156 }
157
159 void reinterpret(const char* str, ui32& val) {
160 argument t = find_argument(str);
161 if (t.is_valid()) {
162 argument t2 = get_next_value(t);
163 if (t2.is_valid()) {
164 val = (ui32)strtoul(t2.arg, NULL, 10);
165 release_argument(t);
166 release_argument(t2);
167 }
168 }
169 }
170
172 void reinterpret(const char *str, float& val) {
173 argument t = find_argument(str);
174 if (t.is_valid()) {
175 argument t2 = get_next_value(t);
176 if (t2.is_valid()) {
177 val = strtof(t2.arg, NULL);
178 release_argument(t);
179 release_argument(t2);
180 }
181 }
182 }
183
185 void reinterpret(const char *str, bool& val) {
186 argument t = find_argument(str);
187 if (t.is_valid()) {
188 argument t2 = get_next_value(t);
189 if (t2.is_valid()) {
190 if (strcmp(t2.arg, "false") == 0) {
191 val = false;
192 release_argument(t);
193 release_argument(t2);
194 }
195 else if (strcmp(t2.arg, "true") == 0) {
196 val = true;
197 release_argument(t);
198 release_argument(t2);
199 }
200 }
201 }
202 }
203
205 bool reinterpret(const char *str) {
206 argument t = find_argument(str);
207 if (t.is_valid()) {
208 release_argument(t);
209 return true;
210 }
211 else
212 return false;
213 }
214
216 void reinterpret_to_bool(const char *str, int& val) {
217 argument t = find_argument(str);
218 if (t.is_valid()) {
219 argument t2 = get_next_value(t);
220 if (t2.is_valid()) {
221 if (strcmp(t2.arg, "false") == 0) {
222 val = 0;
223 release_argument(t);
224 release_argument(t2);
225 }
226 else if (strcmp(t2.arg, "true") == 0) {
227 val = 1;
228 release_argument(t);
229 release_argument(t2);
230 }
231 }
232 }
233 }
234
236 void reinterpret(const char *str, char *& val) {
237 argument t = find_argument(str);
238 if (t.is_valid()) {
239 argument t2 = get_next_value(t);
240 if (t2.is_valid()) {
241 val = t2.arg;
242 release_argument(t);
243 release_argument(t2);
244 }
245 }
246 }
247
249 struct arg_inter_base { virtual void operate(const char *) = 0; };
250
252 void reinterpret(const char *str, arg_inter_base* fun) {
253 argument t = find_argument(str);
254 if (t.is_valid()) {
255 argument t2 = get_next_value(t);
256 if (t2.is_valid()) {
257 fun->operate(t2.arg);
258 release_argument(t);
259 release_argument(t2);
260 }
261 }
262 }
263
264 private:
265 char **argv;
266 int argc;
267 ui8 avail_store[16];//this should be enough for 128 command line arguments
268 ui8 *avail;
269 };
270}
271
272#endif // !OJPH_ARG_H
ojph::argument
Definition ojph_arg.h:53
ojph::argument::index
int index
Definition ojph_arg.h:60
ojph::argument::is_valid
bool is_valid()
Definition ojph_arg.h:58
ojph::argument::argument
argument()
Definition ojph_arg.h:56
ojph::argument::arg
char * arg
Definition ojph_arg.h:57
ojph::argument::cli_interpreter
friend class cli_interpreter
Definition ojph_arg.h:54
ojph::cli_interpreter::cli_interpreter
cli_interpreter()
Definition ojph_arg.h:68
ojph::cli_interpreter::init
void init(int argc, char *argv[])
Definition ojph_arg.h:73
ojph::cli_interpreter::reinterpret_to_bool
void reinterpret_to_bool(const char *str, int &val)
Definition ojph_arg.h:216
ojph::cli_interpreter::reinterpret
void reinterpret(const char *str, int &val)
Definition ojph_arg.h:146
ojph::cli_interpreter::avail
ui8 * avail
Definition ojph_arg.h:268
ojph::cli_interpreter::reinterpret
void reinterpret(const char *str, float &val)
Definition ojph_arg.h:172
ojph::cli_interpreter::release_argument
void release_argument(const argument &arg)
Definition ojph_arg.h:110
ojph::cli_interpreter::is_exhausted
bool is_exhausted()
Definition ojph_arg.h:118
ojph::cli_interpreter::reinterpret
void reinterpret(const char *str, ui32 &val)
Definition ojph_arg.h:159
ojph::cli_interpreter::find_argument
argument find_argument(const char *str)
Definition ojph_arg.h:97
ojph::cli_interpreter::reinterpret
void reinterpret(const char *str, bool &val)
Definition ojph_arg.h:185
ojph::cli_interpreter::get_argument_zero
argument get_argument_zero()
Definition ojph_arg.h:126
ojph::cli_interpreter::get_next_avail_argument
argument get_next_avail_argument(const argument &arg)
Definition ojph_arg.h:133
ojph::cli_interpreter::argv
char ** argv
Definition ojph_arg.h:265
ojph::cli_interpreter::reinterpret
void reinterpret(const char *str, arg_inter_base *fun)
Definition ojph_arg.h:252
ojph::cli_interpreter::reinterpret
bool reinterpret(const char *str)
Definition ojph_arg.h:205
ojph::cli_interpreter::~cli_interpreter
~cli_interpreter()
Definition ojph_arg.h:69
ojph::cli_interpreter::reinterpret
void reinterpret(const char *str, char *&val)
Definition ojph_arg.h:236
ojph::cli_interpreter::avail_store
ui8 avail_store[16]
Definition ojph_arg.h:267
ojph::cli_interpreter::argc
int argc
Definition ojph_arg.h:266
ojph::cli_interpreter::get_next_value
argument get_next_value(const argument &current)
Definition ojph_arg.h:86
ojph
Definition ojph_img_io.h:52
ojph::ui32
uint32_t ui32
Definition ojph_defs.h:54
ojph::ui8
uint8_t ui8
Definition ojph_defs.h:50
ojph_defs.h
ojph_max
#define ojph_max(a, b)
Definition ojph_defs.h:73
ojph::cli_interpreter::arg_inter_base
Definition ojph_arg.h:249
ojph::cli_interpreter::arg_inter_base::operate
virtual void operate(const char *)=0