intl/icu/source/tools/toolutil/uoptions.c@6474c204b198
intl/icu/source/tools/toolutil/uoptions.c
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 /*
2 *******************************************************************************
3 *
4 * Copyright (C) 2000, International Business Machines
5 * Corporation and others. All Rights Reserved.
6 *
7 *******************************************************************************
8 * file name: uoptions.c
9 * encoding: US-ASCII
10 * tab size: 8 (not used)
11 * indentation:4
12 *
13 * created on: 2000apr17
14 * created by: Markus W. Scherer
15 *
16 * This file provides a command line argument parser.
17 */
19 #include "unicode/utypes.h"
20 #include "cstring.h"
21 #include "uoptions.h"
23 U_CAPI int U_EXPORT2
24 u_parseArgs(int argc, char* argv[],
25 int optionCount, UOption options[]) {
26 char *arg;
27 int i=1, remaining=1;
28 char c, stopOptions=0;
30 while(i<argc) {
31 arg=argv[i];
32 if(!stopOptions && *arg=='-' && (c=arg[1])!=0) {
33 /* process an option */
34 UOption *option=NULL;
35 arg+=2;
36 if(c=='-') {
37 /* process a long option */
38 if(*arg==0) {
39 /* stop processing options after "--" */
40 stopOptions=1;
41 } else {
42 /* search for the option string */
43 int j;
44 for(j=0; j<optionCount; ++j) {
45 if(options[j].longName && uprv_strcmp(arg, options[j].longName)==0) {
46 option=options+j;
47 break;
48 }
49 }
50 if(option==NULL) {
51 /* no option matches */
52 return -i;
53 }
54 option->doesOccur=1;
56 if(option->hasArg!=UOPT_NO_ARG) {
57 /* parse the argument for the option, if any */
58 if(i+1<argc && !(argv[i+1][0]=='-' && argv[i+1][1]!=0)) {
59 /* argument in the next argv[], and there is not an option in there */
60 option->value=argv[++i];
61 } else if(option->hasArg==UOPT_REQUIRES_ARG) {
62 /* there is no argument, but one is required: return with error */
63 return -i;
64 }
65 }
66 }
67 } else {
68 /* process one or more short options */
69 do {
70 /* search for the option letter */
71 int j;
72 for(j=0; j<optionCount; ++j) {
73 if(c==options[j].shortName) {
74 option=options+j;
75 break;
76 }
77 }
78 if(option==NULL) {
79 /* no option matches */
80 return -i;
81 }
82 option->doesOccur=1;
84 if(option->hasArg!=UOPT_NO_ARG) {
85 /* parse the argument for the option, if any */
86 if(*arg!=0) {
87 /* argument following in the same argv[] */
88 option->value=arg;
89 /* do not process the rest of this arg as option letters */
90 break;
91 } else if(i+1<argc && !(argv[i+1][0]=='-' && argv[i+1][1]!=0)) {
92 /* argument in the next argv[], and there is not an option in there */
93 option->value=argv[++i];
94 /* this break is redundant because we know that *arg==0 */
95 break;
96 } else if(option->hasArg==UOPT_REQUIRES_ARG) {
97 /* there is no argument, but one is required: return with error */
98 return -i;
99 }
100 }
102 /* get the next option letter */
103 option=NULL;
104 c=*arg++;
105 } while(c!=0);
106 }
108 if(option!=0 && option->optionFn!=0 && option->optionFn(option->context, option)<0) {
109 /* the option function was called and returned an error */
110 return -i;
111 }
113 /* go to next argv[] */
114 ++i;
115 } else {
116 /* move a non-option up in argv[] */
117 argv[remaining++]=arg;
118 ++i;
119 }
120 }
121 return remaining;
122 }
