#include "llvm/ADT/StringExtras.h"
#include <cstring>
using namespace llvm;
std::string llvm::getToken(std::string &Source, const char *Delimiters) {
size_t NumDelimiters = std::strlen(Delimiters);
std::string::size_type Start =
Source.find_first_not_of(Delimiters, 0, NumDelimiters);
if (Start == std::string::npos) Start = Source.size();
std::string::size_type End =
Source.find_first_of(Delimiters, Start, NumDelimiters);
if (End == std::string::npos) End = Source.size();
std::string Result = std::string(Source.begin()+Start, Source.begin()+End);
Source.erase(Source.begin(), Source.begin()+End);
return Result;
}
void llvm::SplitString(const std::string &Source,
std::vector<std::string> &OutFragments,
const char *Delimiters) {
std::string S = Source;
std::string S2 = getToken(S, Delimiters);
while (!S2.empty()) {
OutFragments.push_back(S2);
S2 = getToken(S, Delimiters);
}
}
void llvm::UnescapeString(std::string &Str) {
for (unsigned i = 0; i != Str.size(); ++i) {
if (Str[i] == '\\' && i != Str.size()-1) {
switch (Str[i+1]) {
default: continue; case 'a': Str[i] = '\a'; break;
case 'b': Str[i] = '\b'; break;
case 'e': Str[i] = 27; break;
case 'f': Str[i] = '\f'; break;
case 'n': Str[i] = '\n'; break;
case 'r': Str[i] = '\r'; break;
case 't': Str[i] = '\t'; break;
case 'v': Str[i] = '\v'; break;
case '"': Str[i] = '\"'; break;
case '\'': Str[i] = '\''; break;
case '\\': Str[i] = '\\'; break;
}
Str.erase(Str.begin()+i+1);
}
}
}
void llvm::EscapeString(std::string &Str) {
for (unsigned i = 0; i != Str.size(); ++i) {
if (Str[i] == '\\') {
++i;
Str.insert(Str.begin()+i, '\\');
} else if (Str[i] == '\t') {
Str[i++] = '\\';
Str.insert(Str.begin()+i, 't');
} else if (Str[i] == '"') {
Str.insert(Str.begin()+i++, '\\');
} else if (Str[i] == '\n') {
Str[i++] = '\\';
Str.insert(Str.begin()+i, 'n');
} else if (!std::isprint(Str[i])) {
unsigned Char = Str[i];
Str[i++] = '\\';
Str.insert(Str.begin()+i++, '0'+((Char/64) & 7));
Str.insert(Str.begin()+i++, '0'+((Char/8) & 7));
Str.insert(Str.begin()+i , '0'+( Char & 7));
}
}
}