65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/*******************************************************************************
|
|
|
|
Copyright(C) Jonas 'Sortie' Termansen 2014.
|
|
|
|
This file is part of the Sortix C Library.
|
|
|
|
The Sortix C Library is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or (at your
|
|
option) any later version.
|
|
|
|
The Sortix C Library is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
|
|
License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
string/stresep.c
|
|
Extract a token from a string while handling escape characters.
|
|
|
|
*******************************************************************************/
|
|
|
|
#include <stdbool.h>
|
|
#include <string.h>
|
|
|
|
char* stresep(char** string_ptr, const char* delim, int escape)
|
|
{
|
|
char* token = *string_ptr;
|
|
if ( !token )
|
|
return NULL;
|
|
size_t consumed_length = 0;
|
|
size_t token_length = 0;
|
|
bool escaped = false;
|
|
while ( true )
|
|
{
|
|
char c = token[consumed_length++];
|
|
bool true_nul = c == '\0';
|
|
if ( !escaped && escape && (unsigned char) c == (unsigned char) escape )
|
|
{
|
|
escaped = true;
|
|
continue;
|
|
}
|
|
if ( !escaped && c != '\0' )
|
|
{
|
|
for ( size_t i = 0; delim[i]; i++ )
|
|
{
|
|
if ( c != delim[i] )
|
|
{
|
|
c = '\0';
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
token[token_length++] = c;
|
|
escaped = false;
|
|
if ( c == '\0' )
|
|
{
|
|
*string_ptr = true_nul ? (char*) NULL : token + consumed_length;
|
|
return token;
|
|
}
|
|
}
|
|
}
|