litesoft
@ 964
litesoft / trunk / GWT_Sandbox / FormEngine / src / com / temp / common / shared / utils / CharSource.java
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package com.temp.common.shared.utils; /** * Code to Treat a String as a sorta Iterator... */ public class CharSource { private String mSource; private int mFrom, mTo; public CharSource( String pSource, int pFrom ) { mSource = StringUtils.deNull( pSource ); if ( (mFrom = pFrom) < 0 ) { throw new IllegalArgumentException( "'From' not allowed to be negative" ); } mTo = mSource.length(); } public CharSource( String pSource ) { this( pSource, 0 ); } public CharSource( String pSource, int pFrom, int pTo ) { this( pSource, pFrom ); if ( pTo > mTo ) { throw new IllegalArgumentException( "'To' not allowed to be greater than the length of the 'Source' string" ); } if ( pTo < 0 ) { mTo += pTo; } else { mTo = pTo; } } public boolean anyRemaining() { return (mFrom < mTo); } public int peek() { return anyRemaining() ? mSource.charAt( mFrom ) : -1; } public int get() { return anyRemaining() ? mSource.charAt( mFrom++ ) : -1; } public char getRequired() { if ( anyRemaining() ) { return mSource.charAt( mFrom++ ); } throw new IllegalArgumentException( "Unexpected EOD encountered at index " + mFrom + " in " + mSource ); } public String getUpTo( char c ) { int at = mSource.indexOf( c, mFrom ); if ( at == -1 ) { return ""; } String rv = mSource.substring( mFrom, at ); mFrom = at; return rv; } public boolean consumeSpaces() { while ( peek() == ' ' ) { mFrom++; } return anyRemaining(); } public String getUpToNonVisible7BitAscii() { if ( !anyRemaining() ) { return ""; } int zFrom = mFrom; for ( int c = peek(); (c != -1) && ((' ' < c) && (c <= 126)); c = peek() ) { mFrom++; } return mSource.substring( zFrom, mFrom ); } public boolean consumeNonVisible7BitAscii() { for ( int c = peek(); (c != -1) && ((c <= ' ') || (126 < c)); c = peek() ) { mFrom++; } return anyRemaining(); } public int getFrom() { return mFrom; } public int getLastFrom() { return mFrom - 1; } @Override public String toString() { return mSource.substring( mFrom, mTo ); } } |
Commits for litesoft/trunk/GWT_Sandbox/FormEngine/src/com/temp/common/shared/utils/CharSource.java
Revision | Author | Commited | Message |
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964 | GeorgeS | Fri 01 Aug, 2014 03:18:23 +0000 | ! |