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intl/icu/source/tools/toolutil/uoptions.c@6474c204b198 (annotated)

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.

michael@0	1	/*
michael@0	2	*******************************************************************************
michael@0	3	*
michael@0	4	* Copyright (C) 2000, International Business Machines
michael@0	5	* Corporation and others. All Rights Reserved.
michael@0	6	*
michael@0	7	*******************************************************************************
michael@0	8	* file name: uoptions.c
michael@0	9	* encoding: US-ASCII
michael@0	10	* tab size: 8 (not used)
michael@0	11	* indentation:4
michael@0	12	*
michael@0	13	* created on: 2000apr17
michael@0	14	* created by: Markus W. Scherer
michael@0	15	*
michael@0	16	* This file provides a command line argument parser.
michael@0	17	*/
michael@0	18
michael@0	19	#include "unicode/utypes.h"
michael@0	20	#include "cstring.h"
michael@0	21	#include "uoptions.h"
michael@0	22
michael@0	23	U_CAPI int U_EXPORT2
michael@0	24	u_parseArgs(int argc, char* argv[],
michael@0	25	int optionCount, UOption options[]) {
michael@0	26	char *arg;
michael@0	27	int i=1, remaining=1;
michael@0	28	char c, stopOptions=0;
michael@0	29
michael@0	30	while(i<argc) {
michael@0	31	arg=argv[i];
michael@0	32	if(!stopOptions && *arg=='-' && (c=arg[1])!=0) {
michael@0	33	/* process an option */
michael@0	34	UOption *option=NULL;
michael@0	35	arg+=2;
michael@0	36	if(c=='-') {
michael@0	37	/* process a long option */
michael@0	38	if(*arg==0) {
michael@0	39	/* stop processing options after "--" */
michael@0	40	stopOptions=1;
michael@0	41	} else {
michael@0	42	/* search for the option string */
michael@0	43	int j;
michael@0	44	for(j=0; j<optionCount; ++j) {
michael@0	45	if(options[j].longName && uprv_strcmp(arg, options[j].longName)==0) {
michael@0	46	option=options+j;
michael@0	47	break;
michael@0	48	}
michael@0	49	}
michael@0	50	if(option==NULL) {
michael@0	51	/* no option matches */
michael@0	52	return -i;
michael@0	53	}
michael@0	54	option->doesOccur=1;
michael@0	55
michael@0	56	if(option->hasArg!=UOPT_NO_ARG) {
michael@0	57	/* parse the argument for the option, if any */
michael@0	58	if(i+1<argc && !(argv[i+1][0]=='-' && argv[i+1][1]!=0)) {
michael@0	59	/* argument in the next argv[], and there is not an option in there */
michael@0	60	option->value=argv[++i];
michael@0	61	} else if(option->hasArg==UOPT_REQUIRES_ARG) {
michael@0	62	/* there is no argument, but one is required: return with error */
michael@0	63	return -i;
michael@0	64	}
michael@0	65	}
michael@0	66	}
michael@0	67	} else {
michael@0	68	/* process one or more short options */
michael@0	69	do {
michael@0	70	/* search for the option letter */
michael@0	71	int j;
michael@0	72	for(j=0; j<optionCount; ++j) {
michael@0	73	if(c==options[j].shortName) {
michael@0	74	option=options+j;
michael@0	75	break;
michael@0	76	}
michael@0	77	}
michael@0	78	if(option==NULL) {
michael@0	79	/* no option matches */
michael@0	80	return -i;
michael@0	81	}
michael@0	82	option->doesOccur=1;
michael@0	83
michael@0	84	if(option->hasArg!=UOPT_NO_ARG) {
michael@0	85	/* parse the argument for the option, if any */
michael@0	86	if(*arg!=0) {
michael@0	87	/* argument following in the same argv[] */
michael@0	88	option->value=arg;
michael@0	89	/* do not process the rest of this arg as option letters */
michael@0	90	break;
michael@0	91	} else if(i+1<argc && !(argv[i+1][0]=='-' && argv[i+1][1]!=0)) {
michael@0	92	/* argument in the next argv[], and there is not an option in there */
michael@0	93	option->value=argv[++i];
michael@0	94	/* this break is redundant because we know that *arg==0 */
michael@0	95	break;
michael@0	96	} else if(option->hasArg==UOPT_REQUIRES_ARG) {
michael@0	97	/* there is no argument, but one is required: return with error */
michael@0	98	return -i;
michael@0	99	}
michael@0	100	}
michael@0	101
michael@0	102	/* get the next option letter */
michael@0	103	option=NULL;
michael@0	104	c=*arg++;
michael@0	105	} while(c!=0);
michael@0	106	}
michael@0	107
michael@0	108	if(option!=0 && option->optionFn!=0 && option->optionFn(option->context, option)<0) {
michael@0	109	/* the option function was called and returned an error */
michael@0	110	return -i;
michael@0	111	}
michael@0	112
michael@0	113	/* go to next argv[] */
michael@0	114	++i;
michael@0	115	} else {
michael@0	116	/* move a non-option up in argv[] */
michael@0	117	argv[remaining++]=arg;
michael@0	118	++i;
michael@0	119	}
michael@0	120	}
michael@0	121	return remaining;
michael@0	122	}