236 lines
6.6 KiB
C++
236 lines
6.6 KiB
C++
/*
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*******************************************************************************
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*
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* Copyright (C) 2003-2006, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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*******************************************************************************
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*
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* File prscmnts.cpp
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*
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* Modification History:
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*
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* Date Name Description
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* 08/22/2003 ram Creation.
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*******************************************************************************
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*/
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#include "unicode/regex.h"
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#include "unicode/unistr.h"
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#include "unicode/parseerr.h"
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#include "prscmnts.h"
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#include <stdio.h>
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#include <stdlib.h>
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U_NAMESPACE_USE
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#if UCONFIG_NO_REGULAR_EXPRESSIONS==0 /* donot compile when RegularExpressions not available */
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#define MAX_SPLIT_STRINGS 20
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const char *patternStrings[UPC_LIMIT]={
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"^translate\\s*(.*)",
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"^note\\s*(.*)"
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};
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U_CFUNC int32_t
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removeText(UChar *source, int32_t srcLen,
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UnicodeString patString,uint32_t options,
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UnicodeString replaceText, UErrorCode *status){
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if(status == NULL || U_FAILURE(*status)){
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return 0;
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}
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UnicodeString src(source, srcLen);
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RegexMatcher myMatcher(patString, src, options, *status);
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if(U_FAILURE(*status)){
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return 0;
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}
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UnicodeString dest;
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dest = myMatcher.replaceAll(replaceText,*status);
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return dest.extract(source, srcLen, *status);
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}
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U_CFUNC int32_t
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trim(UChar *src, int32_t srcLen, UErrorCode *status){
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srcLen = removeText(src, srcLen, "^[ \\r\\n]+ ", 0, "", status); // remove leading new lines
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srcLen = removeText(src, srcLen, "^\\s+", 0, "", status); // remove leading spaces
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srcLen = removeText(src, srcLen, "\\s+$", 0, "", status); // remvoe trailing spcaes
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return srcLen;
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}
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U_CFUNC int32_t
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removeCmtText(UChar* source, int32_t srcLen, UErrorCode* status){
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srcLen = trim(source, srcLen, status);
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UnicodeString patString = "^\\s*?\\*\\s*?"; // remove pattern like " * " at the begining of the line
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srcLen = removeText(source, srcLen, patString, UREGEX_MULTILINE, "", status);
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return removeText(source, srcLen, "[ \\r\\n]+", 0, " ", status);// remove new lines;
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}
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U_CFUNC int32_t
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getText(const UChar* source, int32_t srcLen,
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UChar** dest, int32_t destCapacity,
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UnicodeString patternString,
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UErrorCode* status){
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if(status == NULL || U_FAILURE(*status)){
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return 0;
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}
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UnicodeString stringArray[MAX_SPLIT_STRINGS];
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RegexPattern *pattern = RegexPattern::compile("@", 0, *status);
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UnicodeString src (source,srcLen);
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if (U_FAILURE(*status)) {
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return 0;
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}
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pattern->split(src, stringArray, MAX_SPLIT_STRINGS, *status);
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RegexMatcher matcher(patternString, UREGEX_DOTALL, *status);
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if (U_FAILURE(*status)) {
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return 0;
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}
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for(int32_t i=0; i<MAX_SPLIT_STRINGS; i++){
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matcher.reset(stringArray[i]);
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if(matcher.lookingAt(*status)){
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UnicodeString out = matcher.group(1, *status);
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return out.extract(*dest, destCapacity,*status);
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}
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}
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return 0;
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}
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#define AT_SIGN 0x0040
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U_CFUNC int32_t
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getDescription( const UChar* source, int32_t srcLen,
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UChar** dest, int32_t destCapacity,
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UErrorCode* status){
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if(status == NULL || U_FAILURE(*status)){
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return 0;
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}
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UnicodeString stringArray[MAX_SPLIT_STRINGS];
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RegexPattern *pattern = RegexPattern::compile("@", UREGEX_MULTILINE, *status);
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UnicodeString src(source, srcLen);
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if (U_FAILURE(*status)) {
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return 0;
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}
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pattern->split(src, stringArray,MAX_SPLIT_STRINGS , *status);
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if(stringArray[0].indexOf((UChar)AT_SIGN)==-1){
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int32_t destLen = stringArray[0].extract(*dest, destCapacity, *status);
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return trim(*dest, destLen, status);
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}
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return 0;
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}
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U_CFUNC int32_t
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getCount(const UChar* source, int32_t srcLen,
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UParseCommentsOption option, UErrorCode *status){
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if(status == NULL || U_FAILURE(*status)){
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return 0;
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}
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UnicodeString stringArray[MAX_SPLIT_STRINGS];
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RegexPattern *pattern = RegexPattern::compile("@", UREGEX_MULTILINE, *status);
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UnicodeString src (source, srcLen);
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if (U_FAILURE(*status)) {
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return 0;
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}
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int32_t retLen = pattern->split(src, stringArray, MAX_SPLIT_STRINGS, *status);
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RegexMatcher matcher(patternStrings[option], UREGEX_DOTALL, *status);
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if (U_FAILURE(*status)) {
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return 0;
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}
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int32_t count = 0;
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for(int32_t i=0; i<retLen; i++){
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matcher.reset(stringArray[i]);
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if(matcher.lookingAt(*status)){
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count++;
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}
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}
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if(option == UPC_TRANSLATE && count > 1){
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fprintf(stderr, "Multiple @translate tags cannot be supported.\n");
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exit(U_UNSUPPORTED_ERROR);
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}
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return count;
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}
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U_CFUNC int32_t
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getAt(const UChar* source, int32_t srcLen,
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UChar** dest, int32_t destCapacity,
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int32_t index,
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UParseCommentsOption option,
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UErrorCode* status){
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if(status == NULL || U_FAILURE(*status)){
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return 0;
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}
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UnicodeString stringArray[MAX_SPLIT_STRINGS];
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RegexPattern *pattern = RegexPattern::compile("@", UREGEX_MULTILINE, *status);
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UnicodeString src (source, srcLen);
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if (U_FAILURE(*status)) {
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return 0;
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}
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int32_t retLen = pattern->split(src, stringArray, MAX_SPLIT_STRINGS, *status);
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RegexMatcher matcher(patternStrings[option], UREGEX_DOTALL, *status);
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if (U_FAILURE(*status)) {
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return 0;
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}
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int32_t count = 0;
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for(int32_t i=0; i<retLen; i++){
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matcher.reset(stringArray[i]);
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if(matcher.lookingAt(*status)){
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if(count == index){
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UnicodeString out = matcher.group(1, *status);
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return out.extract(*dest, destCapacity,*status);
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}
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count++;
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}
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}
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return 0;
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}
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U_CFUNC int32_t
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getTranslate( const UChar* source, int32_t srcLen,
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UChar** dest, int32_t destCapacity,
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UErrorCode* status){
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UnicodeString notePatternString = "^translate\\s*?(.*)";
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int32_t destLen = getText(source, srcLen, dest, destCapacity, notePatternString, status);
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return trim(*dest, destLen, status);
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}
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U_CFUNC int32_t
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getNote(const UChar* source, int32_t srcLen,
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UChar** dest, int32_t destCapacity,
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UErrorCode* status){
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UnicodeString notePatternString = "^note\\s*?(.*)";
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int32_t destLen = getText(source, srcLen, dest, destCapacity, notePatternString, status);
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return trim(*dest, destLen, status);
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}
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#endif /* UCONFIG_NO_REGULAR_EXPRESSIONS */
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