126 lines
2.4 KiB
C++
126 lines
2.4 KiB
C++
#include <ctype.h>
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#include <string.h>
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#include "CFilter.h"
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namespace pglu {
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namespace filter {
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namespace {
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char *strichr(const char *str, int chr) {
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const char *p = str;
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chr = tolower((unsigned char)chr);
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for(; tolower((unsigned char)(*p)) != chr; ++p)
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if(*p == '\0')
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return NULL;
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return (char*)p;
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}
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char *stristr(const char *str, const char *pattern) {
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if(*pattern == '\0')
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return (char*)str;
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const char *p = str;
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size_t len = strlen(pattern);
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for(; (p = strichr(p, pattern[0])) != NULL; ++p)
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if(!strnicmp(p, pattern, len))
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return (char*)p;
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return NULL;
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}
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bool search_and(const char *str, const char *terms, const bool del) {
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do {
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if(!stristr(str, terms))
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return del; // not found
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while(*terms != '\0')
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++terms;
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++terms;
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} while(*terms != '\0');
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return !del; // found all
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}
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bool search_or(const char *str, const char *terms, const bool del) {
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do {
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if(stristr(str, terms))
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return !del; // found
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while(*terms != '\0')
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++terms;
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++terms;
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} while(*terms != '\0');
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return del; // not found
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}
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} // namespace
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//--------------------------------------
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// CFilter class
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//--------------------------------------
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CFilter::CFilter() :
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m_terms(NULL)
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{
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}
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CFilter::CFilter(const char *strFilter, const EFilterMode mode, const bool del) :
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m_terms(NULL)
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{
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Assign(strFilter, mode, del);
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}
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CFilter::~CFilter() {
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Clear();
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}
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void CFilter::Assign(const char *strFilter, const EFilterMode mode, const bool del) {
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Clear();
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if(mode == AND)
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m_search = search_and;
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else if(mode == OR)
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m_search = search_or;
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else
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return;
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m_mode = mode;
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m_del = del;
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m_terms = new char[strlen(strFilter) + 2];
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while(*strFilter == ' ' || *strFilter == '\t')
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++strFilter;
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char *strTerms = m_terms;
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while(*strFilter != '\0') {
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*(strTerms++) = *(strFilter++);
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if(*strFilter == ' ' || *strFilter == '\t') {
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*(strTerms++) = '\0';
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do {
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++strFilter;
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} while(*strFilter == ' ' || *strFilter == '\t');
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}
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}
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*strTerms = '\0';
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*(strTerms + 1) = '\0';
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}
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void CFilter::Clear() {
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if(m_terms) {
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delete[] m_terms;
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m_terms = NULL;
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}
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}
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bool CFilter::IsEmpty() {
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if(m_terms)
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return *m_terms == '\0';
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else
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return true;
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}
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bool CFilter::IsMatch(const char *str) {
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return m_search(str, m_terms, m_del);
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}
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} // namespace filter
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} // namespace pglu
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