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Changed: New functions to convert arguments string from/to an array of strings

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This commit is contained in:
kervala 2016-02-27 18:37:43 +01:00
parent 4d4e6df8db
commit 1097318ab6
3 changed files with 77 additions and 41 deletions
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4
code/nel/include/nel/misc/common.h
View file

@ -378,6 +378,10 @@ std::string getCommandOutput(const std::string &command);
/// Authorized characters in names are A-Z, a-z, 0-9 and _
std::string expandEnvironmentVariables(const std::string &s);
/// Functions to convert a string with arguments to array or array to string (will espace strings with spaces)
bool explodeArguments(const std::string &str, std::vector<std::string> &args);
std::string joinArguments(const std::vector<std::string> &args);
/// This function kills a program using his pid (on unix, it uses the kill() POSIX function)
bool killProgram(uint32 pid);

35
code/nel/src/misc/cmd_args.cpp
View file

@ -202,42 +202,13 @@ bool CCmdArgs::parse(const std::string &args)
wchar_t str[4096];
uint len = GetModuleFileNameW(NULL, str, 4096);
// first argument should be full path to executable
if (len && len < 4096)
argv.push_back(wideToUtf8(str));
#endif
std::string::size_type pos1 = 0, pos2 = 0;
do
{
// Look for the first non space character
pos1 = args.find_first_not_of (" ", pos2);
if(pos1 == std::string::npos) break;
// Look for the first space or "
pos2 = args.find_first_of (" \"", pos1);
if(pos2 != std::string::npos)
{
// " ?
if(args[pos2] == '"')
{
// Look for the final \"
pos2 = args.find_first_of ("\"", pos2+1);
if(pos2 != std::string::npos)
{
// Look for the first space
pos2 = args.find_first_of (" ", pos2+1);
}
}
}
// Compute the size of the string to extract
std::string::difference_type length = (pos2 != std::string::npos) ? pos2-pos1 : std::string::npos;
std::string tmp = args.substr (pos1, length);
argv.push_back (tmp);
}
while(pos2 != std::string::npos);
// convert string with arguments to array
explodeArguments(args, argv);
return parse(argv);
}

79
code/nel/src/misc/common.cpp
View file

@ -851,15 +851,7 @@ bool launchProgram(const std::string &programName, const std::string &arguments,
// convert one arg into several args
vector<string> args;
string::size_type pos1 = 0, pos2 = 0;
do
{
pos1 = arguments.find_first_not_of (" ", pos2);
if (pos1 == string::npos) break;
pos2 = arguments.find_first_of (" ", pos1);
args.push_back (arguments.substr (pos1, pos2-pos1));
}
while (pos2 != string::npos);
explodeArguments(arguments, args);
// Store the size of each arg
vector<char *> argv(args.size()+2);
@ -1039,6 +1031,75 @@ std::string expandEnvironmentVariables(const std::string &s)
return ret;
}
bool explodeArguments(const std::string &str, std::vector<std::string> &args)
{
if (str.empty()) return false;
std::string::size_type pos1 = 0, pos2 = 0;
do
{
// Look for the first non space character
pos1 = str.find_first_not_of (" ", pos2);
if (pos1 == std::string::npos) break;
// Look for the first space or "
pos2 = str.find_first_of (" \"", pos1);
if (pos2 != std::string::npos)
{
// " ?
if (str[pos2] == '"')
{
// Look for the final \"
pos2 = str.find_first_of ("\"", pos2+1);
if (pos2 != std::string::npos)
{
// Look for the first space
pos2 = str.find_first_of (" ", pos2+1);
}
}
}
// Compute the size of the string to extract
std::string::difference_type length = (pos2 != std::string::npos) ? pos2-pos1 : std::string::npos;
std::string tmp = str.substr (pos1, length);
// remove escape " from argument
if (tmp.length() > 1 && tmp[0] == '"' && tmp[tmp.length()-1] == '"') tmp = tmp.substr(1, tmp.length()-2);
args.push_back (tmp);
}
while(pos2 != std::string::npos);
return true;
}
std::string joinArguments(const std::vector<std::string> &args)
{
std::string res;
for(uint i = 0, len = (uint)args.size(); i < len; ++i)
{
const std::string &arg = args[i];
// prepend space
if (!res.empty()) res += " ";
// escape only if spaces or empty argument
if (arg.empty() || arg.find(' ') != std::string::npos)
{
res += "\"" + arg + "\"";
}
else
{
res += arg;
}
}
return res;
}
/*
* Display the bits (with 0 and 1) composing a byte (from right to left)
*/