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RRTcodebaseC

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#include <string.h>
#include "dc_context.h"
#include "dc_tools.h"
static char* find_param(char* haystack, int key, char** ret_p2)
{
char* p1 = NULL;
char* p2 = NULL;
/* let p1 point to the start of the */
p1 = haystack;
while (1) {
if (p1==NULL || *p1==0) {
return NULL;
}
else if (*p1==key && p1[1]=='=') {
break;
}
else {
p1 = strchr(p1, '\n'); /* if `\r\n` is used, this `\r` is also skipped by this*/
if (p1) {
p1++;
}
}
}
/* let p2 point to the character _after_ the value - eiter `\n` or `\0` */
p2 = strchr(p1, '\n');
if (p2==NULL) {
p2 = &p1[strlen(p1)];
}
*ret_p2 = p2;
return p1;
}
/**
* Create new parameter list object.
*
* @private @memberof dc_param_t
* @return The created parameter list object.
*/
dc_param_t* dc_param_new()
{
dc_param_t* param = NULL;
if ((param=calloc(1, sizeof(dc_param_t)))==NULL) {
exit(28); /* cannot allocate little memory, unrecoverable error */
}
param->packed = calloc(1, 1);
return param;
}
/**
* Free an parameter list object created eg. by dc_param_new().
*
* @private @memberof dc_param_t
* @param param The parameter list object to free.
*/
void dc_param_unref(dc_param_t* param)
{
if (param==NULL) {
return;
}
dc_param_empty(param);
free(param->packed);
free(param);
}
/**
* Delete all parameters in the object.
*
* @memberof dc_param_t
* @param param Parameter object to modify.
* @return None.
*/
void dc_param_empty(dc_param_t* param)
{
if (param==NULL) {
return;
}
param->packed[0] = 0;
}
/**
* Store a parameter set. The parameter set must be given in a packed form as
* `a=value1\nb=value2`. The format should be very strict, additional spaces are not allowed.
*
* Before the new packed parameters are stored, _all_ existant parameters are deleted.
*
* @private @memberof dc_param_t