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GeezerVison is showing github.com — sqlitebrowser/src/sql/ObjectIdentifier.cpp at master · sqlitebrowser/sqlitebrowser

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ObjectIdentifier.cpp

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#include "ObjectIdentifier.h"
static std::string duplicate_char(std::string str, char to_replace)
{
size_t pos = 0;
while((pos = str.find(to_replace, pos)) != std::string::npos)
{
str.insert(pos, 1, to_replace);
pos += 2; // Advance by two characters in order to avoid escaping a character multiple times
}
return str;
}
namespace sqlb {
static escapeQuoting customQuoting = DoubleQuotes;
void setIdentifierQuoting(escapeQuoting toQuoting)
{
customQuoting = toQuoting;
}
char getIdentifierQuoteChar()
{
switch(customQuoting) {
case GraveAccents:
return '`';
case SquareBrackets:
return '[';
case DoubleQuotes:
return '"';
}
return '"';
}
std::string escapeIdentifier(const std::string& id)
{
switch(customQuoting) {
case GraveAccents:
return '`' + duplicate_char(id, '`') + '`';
case SquareBrackets:
// There aren't any escaping possibilities for square brackets inside the identifier,
// so we rely on the user to not enter these characters when this kind of quoting is
// selected.
return '[' + id + ']';
case DoubleQuotes:
// This may produce a 'control reaches end of non-void function' warning if the
// default branch is removed, even though we have covered all possibilities in the
// switch statement.
return '"' + duplicate_char(id, '"') + '"';
}
}
std::string escapeString(const std::string& literal)
{
return '\'' + duplicate_char(literal, '\'') + '\'';
}
bool ObjectIdentifier::fromSerialised(const std::string& serialised)
{
auto pos_comma = serialised.find(",");
auto pos_colon = serialised.find(":");
if(pos_comma == serialised.npos || pos_colon == serialised.npos)
return false;
size_t size_schema, size_name;
size_schema = std::stoul(serialised.substr(0, pos_comma));
size_name = std::stoul(serialised.substr(pos_comma+1, pos_colon-pos_comma));
if(pos_colon + size_schema + size_name + 1 != serialised.size())
return false;
m_schema = serialised.substr(pos_colon + 1, size_schema);
m_name = serialised.substr(pos_colon + size_schema + 1, size_name);
return true;
}
}
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