76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2012.
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This file is part of LibMaxsi.
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LibMaxsi is free software: you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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LibMaxsi is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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details.
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You should have received a copy of the GNU Lesser General Public License
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along with LibMaxsi. If not, see <http://www.gnu.org/licenses/>.
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readparamstring.cpp
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A kinda dirty hack to ease transition to the /dev/video API.
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*******************************************************************************/
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#include <libmaxsi/platform.h>
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#include <libmaxsi/error.h>
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#include <libmaxsi/string.h>
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#include <readparamstring.h>
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using namespace Maxsi;
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extern "C" bool ReadParamString(const char* str, ...)
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{
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if ( String::Seek(str, '\n') ) { Error::Set(EINVAL); }
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const char* keyname;
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va_list args;
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while ( *str )
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{
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size_t varlen = String::Reject(str, ",");
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if ( !varlen ) { str++; continue; }
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size_t namelen = String::Reject(str, "=");
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if ( !namelen ) { Error::Set(EINVAL); goto cleanup; }
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if ( !str[namelen] ) { Error::Set(EINVAL); goto cleanup; }
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if ( varlen < namelen ) { Error::Set(EINVAL); goto cleanup; }
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size_t valuelen = varlen - 1 /*=*/ - namelen;
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char* name = String::Substring(str, 0, namelen);
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if ( !name ) { goto cleanup; }
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char* value = String::Substring(str, namelen+1, valuelen);
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if ( !value ) { delete[] name; goto cleanup; }
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va_start(args, str);
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while ( (keyname = va_arg(args, const char*)) )
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{
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char** nameptr = va_arg(args, char**);
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if ( String::Compare(keyname, name) ) { continue; }
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*nameptr = value;
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break;
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}
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va_end(args);
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if ( !keyname ) { delete[] value; }
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delete[] name;
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str += varlen;
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str += String::Accept(str, ",");
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}
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return true;
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cleanup:
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va_start(args, str);
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while ( (keyname = va_arg(args, const char*)) )
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{
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char** nameptr = va_arg(args, char**);
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delete[] *nameptr; *nameptr = NULL;
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}
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va_end(args);
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return false;
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}
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