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/*
* phc -- the open source PHP compiler
* See doc/license/README.license for licensing information
*
* Various routines for escaping strings.
*/
#include <sstream>
#include <iomanip>
#include "lib/String.h"
using namespace std;
// TODO: All of these functions could be substantially refactored, as they
// all duplicate functionality, but are all slightly different. No point
// fixing them now, as they work, but if they need to be bug-fixed, it might
// be easier to refactor them at the same time.
String* escape_C_dq (String* s)
{
stringstream ss;
foreach (char c, *s)
{
if(c == '"' || c == '\\')
{
ss << "\\" << c;
}
else if(c >= 32 && c < 127)
{
ss << c;
}
else
{
ss << "\\" << setw(3) << setfill('0') << oct << uppercase << (unsigned long int)(unsigned char) c;
ss << resetiosflags(ss.flags ());
}
}
return new String (ss.str());
}
String* escape_C_comment (String* s)
{
// TODO: this really just needs to remove \ns
stringstream ss;
foreach (char c, *s)
{
if(c == '\n')
{
ss << "\\" << c;
}
else if((c >= 32 && c < 127) || c == '\t')
{
ss << c;
}
else
{
ss << "\\" << setw(3) << setfill('0') << oct << uppercase << (unsigned long int)(unsigned char) c;
ss << resetiosflags(ss.flags ());
}
}
return new String (ss.str());
}
String* escape_PHP_dq (String* s)
{
stringstream os;
string::iterator i;
for(i = s->begin(); i != s->end(); i++)
{
switch(*i)
{
case '\n':
os << "\\n";
break;
case '\r':
os << "\\r";
break;
case '\t':
os << "\\t";
break;
case '\\':
case '$':
case '"':
os << "\\" << *i;
break;
default:
if(*i < 32 || *i == 127)
{
os << "\\x" << setw(2) <<
setfill('0') << hex << uppercase << (unsigned long int)(unsigned char)*i;
os << resetiosflags(os.flags());
}
else
os << *i;
break;
}
}
return new String(os.str());
}
String* escape_PHP_sq (String* s)
{
stringstream os;
string::iterator i;
for(i = s->begin(); i != s->end(); i++)
{
switch (*i)
{
case '\'': // single quote
case '\\': // backslash
os << '\\' << *i;
break;
default:
os << *i;
break;
}
}
return new String(os.str());
}
String* escape_DOT (String* in, int max_length)
{
unsigned ml = max_length;
if (max_length == -1)
ml = in->size();
stringstream escaped;
unsigned i;
for(i = 0; i < ml && i < in->size(); i++)
{
switch((*in)[i])
{
case '\\':
case '"':
case '|':
case '{':
case '}':
escaped << "\\" << (*in)[i];
break;
default:
if((*in)[i] >= 32 && (*in)[i] != 127) escaped << (*in)[i];
break;
}
}
if(i < in->size())
escaped << "..";
return s(escaped.str());
}
String* escape_DOT_record (String* in, int max_length)
{
unsigned ml = max_length;
if (max_length == -1)
ml = in->size();
stringstream escaped;
unsigned i;
for(i = 0; i < ml && i < in->size(); i++)
{
switch((*in)[i])
{
case '\\':
case '>': // must be escaped within the label of a record
case '<': // must be escaped within the label of a record
case '"':
escaped << "\\" << (*in)[i];
break;
default:
if((*in)[i] >= 32 && (*in)[i] != 127) escaped << (*in)[i];
break;
}
}
if(i < in->size())
escaped << "..";
return s(escaped.str());
}
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