1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
/*
* parseargs.h
*
* Command line argument parser.
*
* Copyright 1996-2003 Glyph & Cog, LLC
*/
//========================================================================
//
// Modified under the Poppler project - http://poppler.freedesktop.org
//
// Poppler project changes to this file are under the GPLv2 or later license
//
// All changes made under the Poppler project to this file are licensed
// under GPL version 2 or later
//
// Copyright (C) 2008, 2009 Albert Astals Cid <aacid@kde.org>
//
// To see a description of the changes please see the Changelog file that
// came with your tarball or type make ChangeLog if you are building from git
//
//========================================================================
#include <stdio.h>
#include <stddef.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include "parseargs.h"
/* #include "goo/gstrtod.h" */
static const ArgDesc *findArg(const ArgDesc *args, char *arg);
static GBool grabArg(const ArgDesc *arg, int i, int *argc, char *argv[]);
GBool parseArgs(const ArgDesc *args, int *argc, char *argv[]) {
const ArgDesc *arg;
int i, j;
GBool ok;
ok = gTrue;
i = 1;
while (i < *argc) {
if (!strcmp(argv[i], "--")) {
--*argc;
for (j = i; j < *argc; ++j)
argv[j] = argv[j+1];
break;
} else if ((arg = findArg(args, argv[i]))) {
if (!grabArg(arg, i, argc, argv))
ok = gFalse;
} else {
++i;
}
}
return ok;
}
void printUsage(char *program, char *otherArgs, const ArgDesc *args) {
const ArgDesc *arg;
char *typ;
int w, w1;
w = 0;
for (arg = args; arg->arg; ++arg) {
if ((w1 = strlen(arg->arg)) > w)
w = w1;
}
fprintf(stderr, "Usage: %s [options]", program);
if (otherArgs)
fprintf(stderr, " %s", otherArgs);
fprintf(stderr, "\n");
for (arg = args; arg->arg; ++arg) {
fprintf(stderr, " %s", arg->arg);
w1 = 9 + w - strlen(arg->arg);
switch (arg->kind) {
case argInt:
case argIntDummy:
typ = " <int>";
break;
case argFP:
case argFPDummy:
typ = " <fp>";
break;
case argString:
case argStringDummy:
typ = " <string>";
break;
case argFlag:
case argFlagDummy:
default:
typ = "";
break;
}
fprintf(stderr, "%-*s", w1, typ);
if (arg->usage)
fprintf(stderr, ": %s", arg->usage);
fprintf(stderr, "\n");
}
}
static const ArgDesc *findArg(const ArgDesc *args, char *arg) {
const ArgDesc *p;
for (p = args; p->arg; ++p) {
if (p->kind < argFlagDummy && !strcmp(p->arg, arg))
return p;
}
return NULL;
}
static GBool grabArg(const ArgDesc *arg, int i, int *argc, char *argv[]) {
int n;
int j;
GBool ok;
ok = gTrue;
n = 0;
switch (arg->kind) {
case argFlag:
*(GBool *)arg->val = gTrue;
n = 1;
break;
case argInt:
if (i + 1 < *argc && isInt(argv[i+1])) {
*(int *)arg->val = atoi(argv[i+1]);
n = 2;
} else {
ok = gFalse;
n = 1;
}
break;
case argFP:
if (i + 1 < *argc && isFP(argv[i+1])) {
*(double *)arg->val = atof(argv[i+1]);
n = 2;
} else {
ok = gFalse;
n = 1;
}
break;
case argString:
if (i + 1 < *argc) {
strncpy((char *)arg->val, argv[i+1], arg->size - 1);
((char *)arg->val)[arg->size - 1] = '\0';
n = 2;
} else {
ok = gFalse;
n = 1;
}
break;
default:
fprintf(stderr, "Internal error in arg table\n");
n = 1;
break;
}
if (n > 0) {
*argc -= n;
for (j = i; j < *argc; ++j)
argv[j] = argv[j+n];
}
return ok;
}
GBool isInt(char *s) {
if (*s == '-' || *s == '+')
++s;
while (isdigit(*s))
++s;
if (*s)
return gFalse;
return gTrue;
}
GBool isFP(char *s) {
int n;
if (*s == '-' || *s == '+')
++s;
n = 0;
while (isdigit(*s)) {
++s;
++n;
}
if (*s == '.')
++s;
while (isdigit(*s)) {
++s;
++n;
}
if (n > 0 && (*s == 'e' || *s == 'E')) {
++s;
if (*s == '-' || *s == '+')
++s;
n = 0;
if (!isdigit(*s))
return gFalse;
do {
++s;
} while (isdigit(*s));
}
if (*s)
return gFalse;
return gTrue;
}
|
