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implemented /re/i for case-insensitive patterns

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This commit is contained in:
Vern Paxson 2018-06-26 15:59:41 -07:00
parent bd5414d8d5
commit 80b3b82b54
8 changed files with 117 additions and 27 deletions
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19
src/RE.cc
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@ -102,6 +102,19 @@ void Specific_RE_Matcher::AddPat(const char* new_pat,
pattern_text = s;
}
void Specific_RE_Matcher::MakeCaseInsensitive()
{
const char fmt[] = "(+i %s)";
int n = strlen(pattern_text) + strlen(fmt);
char* s = new char[n + 5 /* slop */];
safe_snprintf(s, n + 5, fmt, pattern_text);
delete [] pattern_text;
pattern_text = s;
}
int Specific_RE_Matcher::Compile(int lazy)
{
if ( ! pattern_text )
@ -444,6 +457,12 @@ void RE_Matcher::AddPat(const char* new_pat)
re_exact->AddPat(new_pat);
}
void RE_Matcher::MakeCaseInsensitive()
{
re_anywhere->MakeCaseInsensitive();
re_exact->MakeCaseInsensitive();
}
int RE_Matcher::Compile(int lazy)
{
return re_anywhere->Compile(lazy) && re_exact->Compile(lazy);